libfdt: Update to 1.4.6, switch to using libfdt for overlay support
libfdt highlights since 1.4.3: - fdt_property_placeholder added to create a property without specifying its value at creation time - stringlist helper functions added to libfdt - Improved overlay support - Various internal cleanup Also switch stand/fdt over to using libfdt for overlay support with this update. Our current overlay implementation works only for limited use cases with overlays generated only by some specific versions of our dtc(1). Swap it out for the libfdt implementation, which supports any properly generated overlay being applied to a properly generated base. This will be followed up fairly soon with an update to dtc(1) in tree to properly generate overlays. MFC note: the <stdlib.h> include this update introduces in libfdt_env.h is apparently not necessary in the context we use this in. It's not immediately clear to me the motivation for it being introduced, but it came in with overlay support. I've left it in for the sake of accuracy and because it's not harmful here on HEAD, but MFC'ing this to stable/11 will require wrapping the #include in an `#ifndef _STANDALONE` block or else it will cause build failures. Tested on: Banana Pi-M3 (ARMv7) Tested on: Pine64 (aarch64) Tested on: PowerPC [nwhitehorn] Reviewed by: manu, nwhitehorn MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D13893
This commit is contained in:
commit
6780e684d4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=328106
@ -9,10 +9,10 @@ INTERNALLIB=
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# Vendor sources of libfdt.
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# Vendor sources of libfdt.
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SRCS+= fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c \
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SRCS+= fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c \
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fdt_empty_tree.c
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fdt_empty_tree.c fdt_addresses.c fdt_overlay.c
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# Loader's fdt commands extension sources.
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# Loader's fdt commands extension sources.
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SRCS+= fdt_loader_cmd.c fdt_overlay.c
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SRCS+= fdt_loader_cmd.c
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CFLAGS+= -I${SYSDIR}/contrib/libfdt/ -I${LDRSRC}
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CFLAGS+= -I${SYSDIR}/contrib/libfdt/ -I${LDRSRC}
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@ -39,7 +39,6 @@ __FBSDID("$FreeBSD$");
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#include "bootstrap.h"
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#include "bootstrap.h"
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#include "fdt_platform.h"
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#include "fdt_platform.h"
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#include "fdt_overlay.h"
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#ifdef DEBUG
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#ifdef DEBUG
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#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
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#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
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@ -1,431 +0,0 @@
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/*-
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* Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <libfdt.h>
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#include "fdt_overlay.h"
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/*
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* Get max phandle
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*/
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static uint32_t
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fdt_max_phandle(void *fdtp)
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{
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int o, depth;
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uint32_t max_phandle, phandle;
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depth = 1;
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o = fdt_path_offset(fdtp, "/");
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max_phandle = fdt_get_phandle(fdtp, o);
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for (depth = 0; (o >= 0) && (depth >= 0); o = fdt_next_node(fdtp, o, &depth)) {
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phandle = fdt_get_phandle(fdtp, o);
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if (max_phandle < phandle)
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max_phandle = phandle;
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}
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return max_phandle;
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}
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/*
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* Returns exact memory location specified by fixup in format
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* /path/to/node:property:offset
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*/
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static void *
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fdt_get_fixup_location(void *fdtp, const char *fixup)
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{
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char *path, *prop, *offsetp, *endp;
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int prop_offset, o, proplen;
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void *result;
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result = NULL;
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path = strdup(fixup);
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prop = strchr(path, ':');
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if (prop == NULL) {
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printf("missing property part in \"%s\"\n", fixup);
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result = NULL;
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goto out;
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}
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*prop = 0;
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prop++;
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offsetp = strchr(prop, ':');
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if (offsetp == NULL) {
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printf("missing offset part in \"%s\"\n", fixup);
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result = NULL;
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goto out;
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}
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*offsetp = 0;
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offsetp++;
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prop_offset = strtoul(offsetp, &endp, 10);
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if (*endp != '\0') {
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printf("\"%s\" is not valid number\n", offsetp);
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result = NULL;
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goto out;
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}
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o = fdt_path_offset(fdtp, path);
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if (o < 0) {
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printf("path \"%s\" not found\n", path);
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result = NULL;
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goto out;
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}
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result = fdt_getprop_w(fdtp, o, prop, &proplen);
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if (result == NULL){
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printf("property \"%s\" not found in \"%s\" node\n", prop, path);
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result = NULL;
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goto out;
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}
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if (proplen < prop_offset + sizeof(uint32_t)) {
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printf("%s: property length is too small for fixup\n", fixup);
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result = NULL;
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goto out;
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}
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result = (char*)result + prop_offset;
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out:
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free(path);
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return (result);
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}
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/*
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* Process one entry in __fixups__ { } node
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* @fixups is property value, array of NUL-terminated strings
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* with fixup locations
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* @fixups_len length of the fixups array in bytes
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* @phandle is value for these locations
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*/
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static int
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fdt_do_one_fixup(void *fdtp, const char *fixups, int fixups_len, int phandle)
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{
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void *fixup_pos;
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uint32_t val;
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val = cpu_to_fdt32(phandle);
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while (fixups_len > 0) {
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fixup_pos = fdt_get_fixup_location(fdtp, fixups);
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if (fixup_pos != NULL)
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memcpy(fixup_pos, &val, sizeof(val));
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fixups_len -= strlen(fixups) + 1;
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fixups += strlen(fixups) + 1;
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}
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return (0);
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}
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/*
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* Increase u32 value at pos by offset
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*/
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static void
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fdt_increase_u32(void *pos, uint32_t offset)
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{
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uint32_t val;
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memcpy(&val, pos, sizeof(val));
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val = cpu_to_fdt32(fdt32_to_cpu(val) + offset);
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memcpy(pos, &val, sizeof(val));
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}
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/*
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* Process local fixups
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* @fixups is property value, array of NUL-terminated strings
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* with fixup locations
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* @fixups_len length of the fixups array in bytes
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* @offset value these locations should be increased by
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*/
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static int
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fdt_do_local_fixup(void *fdtp, const char *fixups, int fixups_len, int offset)
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{
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void *fixup_pos;
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while (fixups_len > 0) {
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fixup_pos = fdt_get_fixup_location(fdtp, fixups);
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if (fixup_pos != NULL)
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fdt_increase_u32(fixup_pos, offset);
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fixups_len -= strlen(fixups) + 1;
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fixups += strlen(fixups) + 1;
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}
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return (0);
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}
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/*
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* Increase node phandle by phandle_offset
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*/
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static void
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fdt_increase_phandle(void *fdtp, int node_offset, uint32_t phandle_offset)
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{
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int proplen;
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void *phandle_pos, *node_pos;
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node_pos = (char*)fdtp + node_offset;
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phandle_pos = fdt_getprop_w(fdtp, node_offset, "phandle", &proplen);
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if (phandle_pos)
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fdt_increase_u32(phandle_pos, phandle_offset);
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phandle_pos = fdt_getprop_w(fdtp, node_offset, "linux,phandle", &proplen);
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if (phandle_pos)
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fdt_increase_u32(phandle_pos, phandle_offset);
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}
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/*
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* Increase all phandles by offset
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*/
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static void
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fdt_increase_phandles(void *fdtp, uint32_t offset)
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{
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int o, depth;
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o = fdt_path_offset(fdtp, "/");
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for (depth = 0; (o >= 0) && (depth >= 0); o = fdt_next_node(fdtp, o, &depth)) {
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fdt_increase_phandle(fdtp, o, offset);
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}
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}
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/*
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* Overlay one node defined by <overlay_fdtp, overlay_o> over <main_fdtp, target_o>
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*/
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static void
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fdt_overlay_node(void *main_fdtp, int target_o, void *overlay_fdtp, int overlay_o)
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{
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int len, o, depth;
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const char *name;
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const void *val;
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int target_subnode_o;
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/* Overlay properties */
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for (o = fdt_first_property_offset(overlay_fdtp, overlay_o);
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o >= 0; o = fdt_next_property_offset(overlay_fdtp, o)) {
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val = fdt_getprop_by_offset(overlay_fdtp, o, &name, &len);
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if (val)
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fdt_setprop(main_fdtp, target_o, name, val, len);
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}
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/* Now overlay nodes */
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o = overlay_o;
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for (depth = 0; (o >= 0) && (depth >= 0);
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o = fdt_next_node(overlay_fdtp, o, &depth)) {
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if (depth != 1)
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continue;
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/* Check if there is node with the same name */
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name = fdt_get_name(overlay_fdtp, o, NULL);
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target_subnode_o = fdt_subnode_offset(main_fdtp, target_o, name);
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if (target_subnode_o < 0) {
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/* create new subnode and run merge recursively */
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target_subnode_o = fdt_add_subnode(main_fdtp, target_o, name);
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if (target_subnode_o < 0) {
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printf("failed to create subnode \"%s\": %d\n",
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name, target_subnode_o);
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return;
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}
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}
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fdt_overlay_node(main_fdtp, target_subnode_o,
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overlay_fdtp, o);
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}
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}
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/*
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* Apply one overlay fragment
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*/
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static void
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fdt_apply_fragment(void *main_fdtp, void *overlay_fdtp, int fragment_o)
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{
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uint32_t target;
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const char *target_path;
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const void *val;
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int target_node_o, overlay_node_o;
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target_node_o = -1;
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val = fdt_getprop(overlay_fdtp, fragment_o, "target", NULL);
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if (val) {
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memcpy(&target, val, sizeof(target));
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target = fdt32_to_cpu(target);
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target_node_o = fdt_node_offset_by_phandle(main_fdtp, target);
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if (target_node_o < 0) {
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printf("failed to find target %04x\n", target);
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return;
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}
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}
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if (target_node_o < 0) {
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target_path = fdt_getprop(overlay_fdtp, fragment_o, "target-path", NULL);
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if (target_path == NULL)
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||||||
return;
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target_node_o = fdt_path_offset(main_fdtp, target_path);
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if (target_node_o < 0) {
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printf("failed to find target-path %s\n", target_path);
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return;
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}
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}
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if (target_node_o < 0)
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return;
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overlay_node_o = fdt_subnode_offset(overlay_fdtp, fragment_o, "__overlay__");
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if (overlay_node_o < 0) {
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printf("missing __overlay__ sub-node\n");
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return;
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}
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fdt_overlay_node(main_fdtp, target_node_o, overlay_fdtp, overlay_node_o);
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}
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/*
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* Handle __fixups__ node in overlay DTB
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*/
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|
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static int
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|
||||||
fdt_overlay_do_fixups(void *main_fdtp, void *overlay_fdtp)
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|
||||||
{
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|
||||||
int main_symbols_o, symbol_o, overlay_fixups_o;
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|
||||||
int fixup_prop_o;
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int len;
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||||||
const char *fixups, *name;
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const char *symbol_path;
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uint32_t phandle;
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main_symbols_o = fdt_path_offset(main_fdtp, "/__symbols__");
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overlay_fixups_o = fdt_path_offset(overlay_fdtp, "/__fixups__");
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||||||
if (main_symbols_o < 0) {
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||||||
if (main_symbols_o == -FDT_ERR_NOTFOUND)
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||||||
return (0);
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||||||
return (-1);
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|
||||||
}
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||||||
if (overlay_fixups_o < 0) {
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|
||||||
if (overlay_fixups_o == -FDT_ERR_NOTFOUND)
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||||||
return (0);
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|
||||||
return (-1);
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||||||
}
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|
||||||
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|
||||||
for (fixup_prop_o = fdt_first_property_offset(overlay_fdtp, overlay_fixups_o);
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|
||||||
fixup_prop_o >= 0;
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|
||||||
fixup_prop_o = fdt_next_property_offset(overlay_fdtp, fixup_prop_o)) {
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|
||||||
fixups = fdt_getprop_by_offset(overlay_fdtp, fixup_prop_o, &name, &len);
|
|
||||||
symbol_path = fdt_getprop(main_fdtp, main_symbols_o, name, NULL);
|
|
||||||
if (symbol_path == NULL) {
|
|
||||||
printf("couldn't find \"%s\" symbol in main dtb\n", name);
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
symbol_o = fdt_path_offset(main_fdtp, symbol_path);
|
|
||||||
if (symbol_o < 0) {
|
|
||||||
printf("couldn't find \"%s\" path in main dtb\n", symbol_path);
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
phandle = fdt_get_phandle(main_fdtp, symbol_o);
|
|
||||||
if (fdt_do_one_fixup(overlay_fdtp, fixups, len, phandle) < 0)
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
return (0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Handle __local_fixups__ node in overlay DTB
|
|
||||||
*/
|
|
||||||
static int
|
|
||||||
fdt_overlay_do_local_fixups(void *main_fdtp, void *overlay_fdtp)
|
|
||||||
{
|
|
||||||
int overlay_local_fixups_o;
|
|
||||||
int len, rv;
|
|
||||||
const char *fixups;
|
|
||||||
uint32_t phandle_offset;
|
|
||||||
|
|
||||||
overlay_local_fixups_o = fdt_path_offset(overlay_fdtp, "/__local_fixups__");
|
|
||||||
|
|
||||||
if (overlay_local_fixups_o < 0) {
|
|
||||||
/* If not local fixups - do nothing */
|
|
||||||
if (overlay_local_fixups_o == -FDT_ERR_NOTFOUND)
|
|
||||||
return (0);
|
|
||||||
return (overlay_local_fixups_o);
|
|
||||||
}
|
|
||||||
|
|
||||||
phandle_offset = fdt_max_phandle(main_fdtp);
|
|
||||||
fdt_increase_phandles(overlay_fdtp, phandle_offset);
|
|
||||||
fixups = fdt_getprop_w(overlay_fdtp, overlay_local_fixups_o, "fixup", &len);
|
|
||||||
if (fixups) {
|
|
||||||
rv = fdt_do_local_fixup(overlay_fdtp, fixups, len, phandle_offset);
|
|
||||||
if (rv < 0)
|
|
||||||
return (rv);
|
|
||||||
}
|
|
||||||
|
|
||||||
return (0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Apply all fragments to main DTB
|
|
||||||
*/
|
|
||||||
static int
|
|
||||||
fdt_overlay_apply_fragments(void *main_fdtp, void *overlay_fdtp)
|
|
||||||
{
|
|
||||||
int o, depth;
|
|
||||||
|
|
||||||
o = fdt_path_offset(overlay_fdtp, "/");
|
|
||||||
for (depth = 0; (o >= 0) && (depth >= 0); o = fdt_next_node(overlay_fdtp, o, &depth)) {
|
|
||||||
if (depth != 1)
|
|
||||||
continue;
|
|
||||||
|
|
||||||
fdt_apply_fragment(main_fdtp, overlay_fdtp, o);
|
|
||||||
}
|
|
||||||
|
|
||||||
return (0);
|
|
||||||
}
|
|
||||||
|
|
||||||
int
|
|
||||||
fdt_overlay_apply(void *main_fdtp, void *overlay_fdtp)
|
|
||||||
{
|
|
||||||
|
|
||||||
if (fdt_overlay_do_fixups(main_fdtp, overlay_fdtp) < 0) {
|
|
||||||
printf("failed to perform fixups in overlay\n");
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (fdt_overlay_do_local_fixups(main_fdtp, overlay_fdtp) < 0) {
|
|
||||||
printf("failed to perform local fixups in overlay\n");
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (fdt_overlay_apply_fragments(main_fdtp, overlay_fdtp) < 0) {
|
|
||||||
printf("failed to apply fragments\n");
|
|
||||||
return (-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
return (0);
|
|
||||||
}
|
|
@ -1,34 +0,0 @@
|
|||||||
/*-
|
|
||||||
* Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
||||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
||||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
||||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
||||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
||||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
||||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
||||||
* SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
* $FreeBSD$
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef FDT_OVERLAY_H
|
|
||||||
#define FDT_OVERLAY_H
|
|
||||||
|
|
||||||
int fdt_overlay_apply(void *main_fdtp, void *overlay_fdtp);
|
|
||||||
|
|
||||||
#endif /* FDT_OVERLAY_H */
|
|
@ -76,23 +76,24 @@ int fdt_check_header(const void *fdt)
|
|||||||
|
|
||||||
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
|
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
|
||||||
{
|
{
|
||||||
const char *p;
|
unsigned absoffset = offset + fdt_off_dt_struct(fdt);
|
||||||
|
|
||||||
|
if ((absoffset < offset)
|
||||||
|
|| ((absoffset + len) < absoffset)
|
||||||
|
|| (absoffset + len) > fdt_totalsize(fdt))
|
||||||
|
return NULL;
|
||||||
|
|
||||||
if (fdt_version(fdt) >= 0x11)
|
if (fdt_version(fdt) >= 0x11)
|
||||||
if (((offset + len) < offset)
|
if (((offset + len) < offset)
|
||||||
|| ((offset + len) > fdt_size_dt_struct(fdt)))
|
|| ((offset + len) > fdt_size_dt_struct(fdt)))
|
||||||
return NULL;
|
return NULL;
|
||||||
|
|
||||||
p = _fdt_offset_ptr(fdt, offset);
|
return fdt_offset_ptr_(fdt, offset);
|
||||||
|
|
||||||
if (p + len < p)
|
|
||||||
return NULL;
|
|
||||||
return p;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
|
uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
|
||||||
{
|
{
|
||||||
const uint32_t *tagp, *lenp;
|
const fdt32_t *tagp, *lenp;
|
||||||
uint32_t tag;
|
uint32_t tag;
|
||||||
int offset = startoffset;
|
int offset = startoffset;
|
||||||
const char *p;
|
const char *p;
|
||||||
@ -140,7 +141,7 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
|
|||||||
return tag;
|
return tag;
|
||||||
}
|
}
|
||||||
|
|
||||||
int _fdt_check_node_offset(const void *fdt, int offset)
|
int fdt_check_node_offset_(const void *fdt, int offset)
|
||||||
{
|
{
|
||||||
if ((offset < 0) || (offset % FDT_TAGSIZE)
|
if ((offset < 0) || (offset % FDT_TAGSIZE)
|
||||||
|| (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
|
|| (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
|
||||||
@ -149,7 +150,7 @@ int _fdt_check_node_offset(const void *fdt, int offset)
|
|||||||
return offset;
|
return offset;
|
||||||
}
|
}
|
||||||
|
|
||||||
int _fdt_check_prop_offset(const void *fdt, int offset)
|
int fdt_check_prop_offset_(const void *fdt, int offset)
|
||||||
{
|
{
|
||||||
if ((offset < 0) || (offset % FDT_TAGSIZE)
|
if ((offset < 0) || (offset % FDT_TAGSIZE)
|
||||||
|| (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
|
|| (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
|
||||||
@ -164,7 +165,7 @@ int fdt_next_node(const void *fdt, int offset, int *depth)
|
|||||||
uint32_t tag;
|
uint32_t tag;
|
||||||
|
|
||||||
if (offset >= 0)
|
if (offset >= 0)
|
||||||
if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)
|
if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0)
|
||||||
return nextoffset;
|
return nextoffset;
|
||||||
|
|
||||||
do {
|
do {
|
||||||
@ -198,7 +199,35 @@ int fdt_next_node(const void *fdt, int offset, int *depth)
|
|||||||
return offset;
|
return offset;
|
||||||
}
|
}
|
||||||
|
|
||||||
const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
|
int fdt_first_subnode(const void *fdt, int offset)
|
||||||
|
{
|
||||||
|
int depth = 0;
|
||||||
|
|
||||||
|
offset = fdt_next_node(fdt, offset, &depth);
|
||||||
|
if (offset < 0 || depth != 1)
|
||||||
|
return -FDT_ERR_NOTFOUND;
|
||||||
|
|
||||||
|
return offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_next_subnode(const void *fdt, int offset)
|
||||||
|
{
|
||||||
|
int depth = 1;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* With respect to the parent, the depth of the next subnode will be
|
||||||
|
* the same as the last.
|
||||||
|
*/
|
||||||
|
do {
|
||||||
|
offset = fdt_next_node(fdt, offset, &depth);
|
||||||
|
if (offset < 0 || depth < 1)
|
||||||
|
return -FDT_ERR_NOTFOUND;
|
||||||
|
} while (depth > 1);
|
||||||
|
|
||||||
|
return offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
const char *fdt_find_string_(const char *strtab, int tabsize, const char *s)
|
||||||
{
|
{
|
||||||
int len = strlen(s) + 1;
|
int len = strlen(s) + 1;
|
||||||
const char *last = strtab + tabsize - len;
|
const char *last = strtab + tabsize - len;
|
||||||
|
@ -1,48 +1,99 @@
|
|||||||
#ifndef _FDT_H
|
#ifndef FDT_H
|
||||||
#define _FDT_H
|
#define FDT_H
|
||||||
|
/*
|
||||||
|
* libfdt - Flat Device Tree manipulation
|
||||||
|
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
||||||
|
* Copyright 2012 Kim Phillips, Freescale Semiconductor.
|
||||||
|
*
|
||||||
|
* libfdt is dual licensed: you can use it either under the terms of
|
||||||
|
* the GPL, or the BSD license, at your option.
|
||||||
|
*
|
||||||
|
* a) This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License as
|
||||||
|
* published by the Free Software Foundation; either version 2 of the
|
||||||
|
* License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public
|
||||||
|
* License along with this library; if not, write to the Free
|
||||||
|
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
|
||||||
|
* MA 02110-1301 USA
|
||||||
|
*
|
||||||
|
* Alternatively,
|
||||||
|
*
|
||||||
|
* b) Redistribution and use in source and binary forms, with or
|
||||||
|
* without modification, are permitted provided that the following
|
||||||
|
* conditions are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer in the documentation and/or other materials
|
||||||
|
* provided with the distribution.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||||
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||||
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||||||
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||||
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||||
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||||
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
||||||
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
|
||||||
#ifndef __ASSEMBLY__
|
#ifndef __ASSEMBLY__
|
||||||
|
|
||||||
struct fdt_header {
|
struct fdt_header {
|
||||||
uint32_t magic; /* magic word FDT_MAGIC */
|
fdt32_t magic; /* magic word FDT_MAGIC */
|
||||||
uint32_t totalsize; /* total size of DT block */
|
fdt32_t totalsize; /* total size of DT block */
|
||||||
uint32_t off_dt_struct; /* offset to structure */
|
fdt32_t off_dt_struct; /* offset to structure */
|
||||||
uint32_t off_dt_strings; /* offset to strings */
|
fdt32_t off_dt_strings; /* offset to strings */
|
||||||
uint32_t off_mem_rsvmap; /* offset to memory reserve map */
|
fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
|
||||||
uint32_t version; /* format version */
|
fdt32_t version; /* format version */
|
||||||
uint32_t last_comp_version; /* last compatible version */
|
fdt32_t last_comp_version; /* last compatible version */
|
||||||
|
|
||||||
/* version 2 fields below */
|
/* version 2 fields below */
|
||||||
uint32_t boot_cpuid_phys; /* Which physical CPU id we're
|
fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
|
||||||
booting on */
|
booting on */
|
||||||
/* version 3 fields below */
|
/* version 3 fields below */
|
||||||
uint32_t size_dt_strings; /* size of the strings block */
|
fdt32_t size_dt_strings; /* size of the strings block */
|
||||||
|
|
||||||
/* version 17 fields below */
|
/* version 17 fields below */
|
||||||
uint32_t size_dt_struct; /* size of the structure block */
|
fdt32_t size_dt_struct; /* size of the structure block */
|
||||||
};
|
};
|
||||||
|
|
||||||
struct fdt_reserve_entry {
|
struct fdt_reserve_entry {
|
||||||
uint64_t address;
|
fdt64_t address;
|
||||||
uint64_t size;
|
fdt64_t size;
|
||||||
};
|
};
|
||||||
|
|
||||||
struct fdt_node_header {
|
struct fdt_node_header {
|
||||||
uint32_t tag;
|
fdt32_t tag;
|
||||||
char name[0];
|
char name[0];
|
||||||
};
|
};
|
||||||
|
|
||||||
struct fdt_property {
|
struct fdt_property {
|
||||||
uint32_t tag;
|
fdt32_t tag;
|
||||||
uint32_t len;
|
fdt32_t len;
|
||||||
uint32_t nameoff;
|
fdt32_t nameoff;
|
||||||
char data[0];
|
char data[0];
|
||||||
};
|
};
|
||||||
|
|
||||||
#endif /* !__ASSEMBLY */
|
#endif /* !__ASSEMBLY */
|
||||||
|
|
||||||
#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
|
#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
|
||||||
#define FDT_TAGSIZE sizeof(uint32_t)
|
#define FDT_TAGSIZE sizeof(fdt32_t)
|
||||||
|
|
||||||
#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
|
#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
|
||||||
#define FDT_END_NODE 0x2 /* End node */
|
#define FDT_END_NODE 0x2 /* End node */
|
||||||
@ -51,10 +102,10 @@ struct fdt_property {
|
|||||||
#define FDT_NOP 0x4 /* nop */
|
#define FDT_NOP 0x4 /* nop */
|
||||||
#define FDT_END 0x9
|
#define FDT_END 0x9
|
||||||
|
|
||||||
#define FDT_V1_SIZE (7*sizeof(uint32_t))
|
#define FDT_V1_SIZE (7*sizeof(fdt32_t))
|
||||||
#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(uint32_t))
|
#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
|
||||||
#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(uint32_t))
|
#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
|
||||||
#define FDT_V16_SIZE FDT_V3_SIZE
|
#define FDT_V16_SIZE FDT_V3_SIZE
|
||||||
#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(uint32_t))
|
#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
|
||||||
|
|
||||||
#endif /* _FDT_H */
|
#endif /* FDT_H */
|
||||||
|
96
sys/contrib/libfdt/fdt_addresses.c
Normal file
96
sys/contrib/libfdt/fdt_addresses.c
Normal file
@ -0,0 +1,96 @@
|
|||||||
|
/*
|
||||||
|
* libfdt - Flat Device Tree manipulation
|
||||||
|
* Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
|
||||||
|
*
|
||||||
|
* libfdt is dual licensed: you can use it either under the terms of
|
||||||
|
* the GPL, or the BSD license, at your option.
|
||||||
|
*
|
||||||
|
* a) This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License as
|
||||||
|
* published by the Free Software Foundation; either version 2 of the
|
||||||
|
* License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public
|
||||||
|
* License along with this library; if not, write to the Free
|
||||||
|
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
|
||||||
|
* MA 02110-1301 USA
|
||||||
|
*
|
||||||
|
* Alternatively,
|
||||||
|
*
|
||||||
|
* b) Redistribution and use in source and binary forms, with or
|
||||||
|
* without modification, are permitted provided that the following
|
||||||
|
* conditions are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer in the documentation and/or other materials
|
||||||
|
* provided with the distribution.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||||
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||||
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||||||
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||||
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||||
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||||
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
||||||
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
#include "libfdt_env.h"
|
||||||
|
|
||||||
|
#include <fdt.h>
|
||||||
|
#include <libfdt.h>
|
||||||
|
|
||||||
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
|
int fdt_address_cells(const void *fdt, int nodeoffset)
|
||||||
|
{
|
||||||
|
const fdt32_t *ac;
|
||||||
|
int val;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
|
||||||
|
if (!ac)
|
||||||
|
return 2;
|
||||||
|
|
||||||
|
if (len != sizeof(*ac))
|
||||||
|
return -FDT_ERR_BADNCELLS;
|
||||||
|
|
||||||
|
val = fdt32_to_cpu(*ac);
|
||||||
|
if ((val <= 0) || (val > FDT_MAX_NCELLS))
|
||||||
|
return -FDT_ERR_BADNCELLS;
|
||||||
|
|
||||||
|
return val;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_size_cells(const void *fdt, int nodeoffset)
|
||||||
|
{
|
||||||
|
const fdt32_t *sc;
|
||||||
|
int val;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
|
||||||
|
if (!sc)
|
||||||
|
return 2;
|
||||||
|
|
||||||
|
if (len != sizeof(*sc))
|
||||||
|
return -FDT_ERR_BADNCELLS;
|
||||||
|
|
||||||
|
val = fdt32_to_cpu(*sc);
|
||||||
|
if ((val < 0) || (val > FDT_MAX_NCELLS))
|
||||||
|
return -FDT_ERR_BADNCELLS;
|
||||||
|
|
||||||
|
return val;
|
||||||
|
}
|
@ -81,4 +81,3 @@ int fdt_create_empty_tree(void *buf, int bufsize)
|
|||||||
|
|
||||||
return fdt_open_into(buf, buf, bufsize);
|
return fdt_open_into(buf, buf, bufsize);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
861
sys/contrib/libfdt/fdt_overlay.c
Normal file
861
sys/contrib/libfdt/fdt_overlay.c
Normal file
@ -0,0 +1,861 @@
|
|||||||
|
#include "libfdt_env.h"
|
||||||
|
|
||||||
|
#include <fdt.h>
|
||||||
|
#include <libfdt.h>
|
||||||
|
|
||||||
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_get_target_phandle - retrieves the target phandle of a fragment
|
||||||
|
* @fdto: pointer to the device tree overlay blob
|
||||||
|
* @fragment: node offset of the fragment in the overlay
|
||||||
|
*
|
||||||
|
* overlay_get_target_phandle() retrieves the target phandle of an
|
||||||
|
* overlay fragment when that fragment uses a phandle (target
|
||||||
|
* property) instead of a path (target-path property).
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* the phandle pointed by the target property
|
||||||
|
* 0, if the phandle was not found
|
||||||
|
* -1, if the phandle was malformed
|
||||||
|
*/
|
||||||
|
static uint32_t overlay_get_target_phandle(const void *fdto, int fragment)
|
||||||
|
{
|
||||||
|
const fdt32_t *val;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
val = fdt_getprop(fdto, fragment, "target", &len);
|
||||||
|
if (!val)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1))
|
||||||
|
return (uint32_t)-1;
|
||||||
|
|
||||||
|
return fdt32_to_cpu(*val);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_get_target - retrieves the offset of a fragment's target
|
||||||
|
* @fdt: Base device tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @fragment: node offset of the fragment in the overlay
|
||||||
|
* @pathp: pointer which receives the path of the target (or NULL)
|
||||||
|
*
|
||||||
|
* overlay_get_target() retrieves the target offset in the base
|
||||||
|
* device tree of a fragment, no matter how the actual targetting is
|
||||||
|
* done (through a phandle or a path)
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* the targetted node offset in the base device tree
|
||||||
|
* Negative error code on error
|
||||||
|
*/
|
||||||
|
static int overlay_get_target(const void *fdt, const void *fdto,
|
||||||
|
int fragment, char const **pathp)
|
||||||
|
{
|
||||||
|
uint32_t phandle;
|
||||||
|
const char *path = NULL;
|
||||||
|
int path_len = 0, ret;
|
||||||
|
|
||||||
|
/* Try first to do a phandle based lookup */
|
||||||
|
phandle = overlay_get_target_phandle(fdto, fragment);
|
||||||
|
if (phandle == (uint32_t)-1)
|
||||||
|
return -FDT_ERR_BADPHANDLE;
|
||||||
|
|
||||||
|
/* no phandle, try path */
|
||||||
|
if (!phandle) {
|
||||||
|
/* And then a path based lookup */
|
||||||
|
path = fdt_getprop(fdto, fragment, "target-path", &path_len);
|
||||||
|
if (path)
|
||||||
|
ret = fdt_path_offset(fdt, path);
|
||||||
|
else
|
||||||
|
ret = path_len;
|
||||||
|
} else
|
||||||
|
ret = fdt_node_offset_by_phandle(fdt, phandle);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If we haven't found either a target or a
|
||||||
|
* target-path property in a node that contains a
|
||||||
|
* __overlay__ subnode (we wouldn't be called
|
||||||
|
* otherwise), consider it a improperly written
|
||||||
|
* overlay
|
||||||
|
*/
|
||||||
|
if (ret < 0 && path_len == -FDT_ERR_NOTFOUND)
|
||||||
|
ret = -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
/* return on error */
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
/* return pointer to path (if available) */
|
||||||
|
if (pathp)
|
||||||
|
*pathp = path ? path : NULL;
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_phandle_add_offset - Increases a phandle by an offset
|
||||||
|
* @fdt: Base device tree blob
|
||||||
|
* @node: Device tree overlay blob
|
||||||
|
* @name: Name of the property to modify (phandle or linux,phandle)
|
||||||
|
* @delta: offset to apply
|
||||||
|
*
|
||||||
|
* overlay_phandle_add_offset() increments a node phandle by a given
|
||||||
|
* offset.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success.
|
||||||
|
* Negative error code on error
|
||||||
|
*/
|
||||||
|
static int overlay_phandle_add_offset(void *fdt, int node,
|
||||||
|
const char *name, uint32_t delta)
|
||||||
|
{
|
||||||
|
const fdt32_t *val;
|
||||||
|
uint32_t adj_val;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
val = fdt_getprop(fdt, node, name, &len);
|
||||||
|
if (!val)
|
||||||
|
return len;
|
||||||
|
|
||||||
|
if (len != sizeof(*val))
|
||||||
|
return -FDT_ERR_BADPHANDLE;
|
||||||
|
|
||||||
|
adj_val = fdt32_to_cpu(*val);
|
||||||
|
if ((adj_val + delta) < adj_val)
|
||||||
|
return -FDT_ERR_NOPHANDLES;
|
||||||
|
|
||||||
|
adj_val += delta;
|
||||||
|
if (adj_val == (uint32_t)-1)
|
||||||
|
return -FDT_ERR_NOPHANDLES;
|
||||||
|
|
||||||
|
return fdt_setprop_inplace_u32(fdt, node, name, adj_val);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_adjust_node_phandles - Offsets the phandles of a node
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @node: Offset of the node we want to adjust
|
||||||
|
* @delta: Offset to shift the phandles of
|
||||||
|
*
|
||||||
|
* overlay_adjust_node_phandles() adds a constant to all the phandles
|
||||||
|
* of a given node. This is mainly use as part of the overlay
|
||||||
|
* application process, when we want to update all the overlay
|
||||||
|
* phandles to not conflict with the overlays of the base device tree.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_adjust_node_phandles(void *fdto, int node,
|
||||||
|
uint32_t delta)
|
||||||
|
{
|
||||||
|
int child;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = overlay_phandle_add_offset(fdto, node, "phandle", delta);
|
||||||
|
if (ret && ret != -FDT_ERR_NOTFOUND)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta);
|
||||||
|
if (ret && ret != -FDT_ERR_NOTFOUND)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
fdt_for_each_subnode(child, fdto, node) {
|
||||||
|
ret = overlay_adjust_node_phandles(fdto, child, delta);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @delta: Offset to shift the phandles of
|
||||||
|
*
|
||||||
|
* overlay_adjust_local_phandles() adds a constant to all the
|
||||||
|
* phandles of an overlay. This is mainly use as part of the overlay
|
||||||
|
* application process, when we want to update all the overlay
|
||||||
|
* phandles to not conflict with the overlays of the base device tree.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_adjust_local_phandles(void *fdto, uint32_t delta)
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* Start adjusting the phandles from the overlay root
|
||||||
|
*/
|
||||||
|
return overlay_adjust_node_phandles(fdto, 0, delta);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_update_local_node_references - Adjust the overlay references
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @tree_node: Node offset of the node to operate on
|
||||||
|
* @fixup_node: Node offset of the matching local fixups node
|
||||||
|
* @delta: Offset to shift the phandles of
|
||||||
|
*
|
||||||
|
* overlay_update_local_nodes_references() update the phandles
|
||||||
|
* pointing to a node within the device tree overlay by adding a
|
||||||
|
* constant delta.
|
||||||
|
*
|
||||||
|
* This is mainly used as part of a device tree application process,
|
||||||
|
* where you want the device tree overlays phandles to not conflict
|
||||||
|
* with the ones from the base device tree before merging them.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_update_local_node_references(void *fdto,
|
||||||
|
int tree_node,
|
||||||
|
int fixup_node,
|
||||||
|
uint32_t delta)
|
||||||
|
{
|
||||||
|
int fixup_prop;
|
||||||
|
int fixup_child;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) {
|
||||||
|
const fdt32_t *fixup_val;
|
||||||
|
const char *tree_val;
|
||||||
|
const char *name;
|
||||||
|
int fixup_len;
|
||||||
|
int tree_len;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
fixup_val = fdt_getprop_by_offset(fdto, fixup_prop,
|
||||||
|
&name, &fixup_len);
|
||||||
|
if (!fixup_val)
|
||||||
|
return fixup_len;
|
||||||
|
|
||||||
|
if (fixup_len % sizeof(uint32_t))
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
|
||||||
|
if (!tree_val) {
|
||||||
|
if (tree_len == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
return tree_len;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
|
||||||
|
fdt32_t adj_val;
|
||||||
|
uint32_t poffset;
|
||||||
|
|
||||||
|
poffset = fdt32_to_cpu(fixup_val[i]);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* phandles to fixup can be unaligned.
|
||||||
|
*
|
||||||
|
* Use a memcpy for the architectures that do
|
||||||
|
* not support unaligned accesses.
|
||||||
|
*/
|
||||||
|
memcpy(&adj_val, tree_val + poffset, sizeof(adj_val));
|
||||||
|
|
||||||
|
adj_val = cpu_to_fdt32(fdt32_to_cpu(adj_val) + delta);
|
||||||
|
|
||||||
|
ret = fdt_setprop_inplace_namelen_partial(fdto,
|
||||||
|
tree_node,
|
||||||
|
name,
|
||||||
|
strlen(name),
|
||||||
|
poffset,
|
||||||
|
&adj_val,
|
||||||
|
sizeof(adj_val));
|
||||||
|
if (ret == -FDT_ERR_NOSPACE)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fdt_for_each_subnode(fixup_child, fdto, fixup_node) {
|
||||||
|
const char *fixup_child_name = fdt_get_name(fdto, fixup_child,
|
||||||
|
NULL);
|
||||||
|
int tree_child;
|
||||||
|
|
||||||
|
tree_child = fdt_subnode_offset(fdto, tree_node,
|
||||||
|
fixup_child_name);
|
||||||
|
if (tree_child == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
if (tree_child < 0)
|
||||||
|
return tree_child;
|
||||||
|
|
||||||
|
ret = overlay_update_local_node_references(fdto,
|
||||||
|
tree_child,
|
||||||
|
fixup_child,
|
||||||
|
delta);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_update_local_references - Adjust the overlay references
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @delta: Offset to shift the phandles of
|
||||||
|
*
|
||||||
|
* overlay_update_local_references() update all the phandles pointing
|
||||||
|
* to a node within the device tree overlay by adding a constant
|
||||||
|
* delta to not conflict with the base overlay.
|
||||||
|
*
|
||||||
|
* This is mainly used as part of a device tree application process,
|
||||||
|
* where you want the device tree overlays phandles to not conflict
|
||||||
|
* with the ones from the base device tree before merging them.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_update_local_references(void *fdto, uint32_t delta)
|
||||||
|
{
|
||||||
|
int fixups;
|
||||||
|
|
||||||
|
fixups = fdt_path_offset(fdto, "/__local_fixups__");
|
||||||
|
if (fixups < 0) {
|
||||||
|
/* There's no local phandles to adjust, bail out */
|
||||||
|
if (fixups == -FDT_ERR_NOTFOUND)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
return fixups;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Update our local references from the root of the tree
|
||||||
|
*/
|
||||||
|
return overlay_update_local_node_references(fdto, 0, fixups,
|
||||||
|
delta);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_fixup_one_phandle - Set an overlay phandle to the base one
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @symbols_off: Node offset of the symbols node in the base device tree
|
||||||
|
* @path: Path to a node holding a phandle in the overlay
|
||||||
|
* @path_len: number of path characters to consider
|
||||||
|
* @name: Name of the property holding the phandle reference in the overlay
|
||||||
|
* @name_len: number of name characters to consider
|
||||||
|
* @poffset: Offset within the overlay property where the phandle is stored
|
||||||
|
* @label: Label of the node referenced by the phandle
|
||||||
|
*
|
||||||
|
* overlay_fixup_one_phandle() resolves an overlay phandle pointing to
|
||||||
|
* a node in the base device tree.
|
||||||
|
*
|
||||||
|
* This is part of the device tree overlay application process, when
|
||||||
|
* you want all the phandles in the overlay to point to the actual
|
||||||
|
* base dt nodes.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_fixup_one_phandle(void *fdt, void *fdto,
|
||||||
|
int symbols_off,
|
||||||
|
const char *path, uint32_t path_len,
|
||||||
|
const char *name, uint32_t name_len,
|
||||||
|
int poffset, const char *label)
|
||||||
|
{
|
||||||
|
const char *symbol_path;
|
||||||
|
uint32_t phandle;
|
||||||
|
fdt32_t phandle_prop;
|
||||||
|
int symbol_off, fixup_off;
|
||||||
|
int prop_len;
|
||||||
|
|
||||||
|
if (symbols_off < 0)
|
||||||
|
return symbols_off;
|
||||||
|
|
||||||
|
symbol_path = fdt_getprop(fdt, symbols_off, label,
|
||||||
|
&prop_len);
|
||||||
|
if (!symbol_path)
|
||||||
|
return prop_len;
|
||||||
|
|
||||||
|
symbol_off = fdt_path_offset(fdt, symbol_path);
|
||||||
|
if (symbol_off < 0)
|
||||||
|
return symbol_off;
|
||||||
|
|
||||||
|
phandle = fdt_get_phandle(fdt, symbol_off);
|
||||||
|
if (!phandle)
|
||||||
|
return -FDT_ERR_NOTFOUND;
|
||||||
|
|
||||||
|
fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
|
||||||
|
if (fixup_off == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
if (fixup_off < 0)
|
||||||
|
return fixup_off;
|
||||||
|
|
||||||
|
phandle_prop = cpu_to_fdt32(phandle);
|
||||||
|
return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
|
||||||
|
name, name_len, poffset,
|
||||||
|
&phandle_prop,
|
||||||
|
sizeof(phandle_prop));
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_fixup_phandle - Set an overlay phandle to the base one
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @symbols_off: Node offset of the symbols node in the base device tree
|
||||||
|
* @property: Property offset in the overlay holding the list of fixups
|
||||||
|
*
|
||||||
|
* overlay_fixup_phandle() resolves all the overlay phandles pointed
|
||||||
|
* to in a __fixups__ property, and updates them to match the phandles
|
||||||
|
* in use in the base device tree.
|
||||||
|
*
|
||||||
|
* This is part of the device tree overlay application process, when
|
||||||
|
* you want all the phandles in the overlay to point to the actual
|
||||||
|
* base dt nodes.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off,
|
||||||
|
int property)
|
||||||
|
{
|
||||||
|
const char *value;
|
||||||
|
const char *label;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
value = fdt_getprop_by_offset(fdto, property,
|
||||||
|
&label, &len);
|
||||||
|
if (!value) {
|
||||||
|
if (len == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_INTERNAL;
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
do {
|
||||||
|
const char *path, *name, *fixup_end;
|
||||||
|
const char *fixup_str = value;
|
||||||
|
uint32_t path_len, name_len;
|
||||||
|
uint32_t fixup_len;
|
||||||
|
char *sep, *endptr;
|
||||||
|
int poffset, ret;
|
||||||
|
|
||||||
|
fixup_end = memchr(value, '\0', len);
|
||||||
|
if (!fixup_end)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
fixup_len = fixup_end - fixup_str;
|
||||||
|
|
||||||
|
len -= fixup_len + 1;
|
||||||
|
value += fixup_len + 1;
|
||||||
|
|
||||||
|
path = fixup_str;
|
||||||
|
sep = memchr(fixup_str, ':', fixup_len);
|
||||||
|
if (!sep || *sep != ':')
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
path_len = sep - path;
|
||||||
|
if (path_len == (fixup_len - 1))
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
fixup_len -= path_len + 1;
|
||||||
|
name = sep + 1;
|
||||||
|
sep = memchr(name, ':', fixup_len);
|
||||||
|
if (!sep || *sep != ':')
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
name_len = sep - name;
|
||||||
|
if (!name_len)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
poffset = strtoul(sep + 1, &endptr, 10);
|
||||||
|
if ((*endptr != '\0') || (endptr <= (sep + 1)))
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off,
|
||||||
|
path, path_len, name, name_len,
|
||||||
|
poffset, label);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
} while (len > 0);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_fixup_phandles - Resolve the overlay phandles to the base
|
||||||
|
* device tree
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
*
|
||||||
|
* overlay_fixup_phandles() resolves all the overlay phandles pointing
|
||||||
|
* to nodes in the base device tree.
|
||||||
|
*
|
||||||
|
* This is one of the steps of the device tree overlay application
|
||||||
|
* process, when you want all the phandles in the overlay to point to
|
||||||
|
* the actual base dt nodes.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_fixup_phandles(void *fdt, void *fdto)
|
||||||
|
{
|
||||||
|
int fixups_off, symbols_off;
|
||||||
|
int property;
|
||||||
|
|
||||||
|
/* We can have overlays without any fixups */
|
||||||
|
fixups_off = fdt_path_offset(fdto, "/__fixups__");
|
||||||
|
if (fixups_off == -FDT_ERR_NOTFOUND)
|
||||||
|
return 0; /* nothing to do */
|
||||||
|
if (fixups_off < 0)
|
||||||
|
return fixups_off;
|
||||||
|
|
||||||
|
/* And base DTs without symbols */
|
||||||
|
symbols_off = fdt_path_offset(fdt, "/__symbols__");
|
||||||
|
if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))
|
||||||
|
return symbols_off;
|
||||||
|
|
||||||
|
fdt_for_each_property_offset(property, fdto, fixups_off) {
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_apply_node - Merges a node into the base device tree
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @target: Node offset in the base device tree to apply the fragment to
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
* @node: Node offset in the overlay holding the changes to merge
|
||||||
|
*
|
||||||
|
* overlay_apply_node() merges a node into a target base device tree
|
||||||
|
* node pointed.
|
||||||
|
*
|
||||||
|
* This is part of the final step in the device tree overlay
|
||||||
|
* application process, when all the phandles have been adjusted and
|
||||||
|
* resolved and you just have to merge overlay into the base device
|
||||||
|
* tree.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_apply_node(void *fdt, int target,
|
||||||
|
void *fdto, int node)
|
||||||
|
{
|
||||||
|
int property;
|
||||||
|
int subnode;
|
||||||
|
|
||||||
|
fdt_for_each_property_offset(property, fdto, node) {
|
||||||
|
const char *name;
|
||||||
|
const void *prop;
|
||||||
|
int prop_len;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
prop = fdt_getprop_by_offset(fdto, property, &name,
|
||||||
|
&prop_len);
|
||||||
|
if (prop_len == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_INTERNAL;
|
||||||
|
if (prop_len < 0)
|
||||||
|
return prop_len;
|
||||||
|
|
||||||
|
ret = fdt_setprop(fdt, target, name, prop, prop_len);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
fdt_for_each_subnode(subnode, fdto, node) {
|
||||||
|
const char *name = fdt_get_name(fdto, subnode, NULL);
|
||||||
|
int nnode;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
nnode = fdt_add_subnode(fdt, target, name);
|
||||||
|
if (nnode == -FDT_ERR_EXISTS) {
|
||||||
|
nnode = fdt_subnode_offset(fdt, target, name);
|
||||||
|
if (nnode == -FDT_ERR_NOTFOUND)
|
||||||
|
return -FDT_ERR_INTERNAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (nnode < 0)
|
||||||
|
return nnode;
|
||||||
|
|
||||||
|
ret = overlay_apply_node(fdt, nnode, fdto, subnode);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_merge - Merge an overlay into its base device tree
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
*
|
||||||
|
* overlay_merge() merges an overlay into its base device tree.
|
||||||
|
*
|
||||||
|
* This is the next to last step in the device tree overlay application
|
||||||
|
* process, when all the phandles have been adjusted and resolved and
|
||||||
|
* you just have to merge overlay into the base device tree.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_merge(void *fdt, void *fdto)
|
||||||
|
{
|
||||||
|
int fragment;
|
||||||
|
|
||||||
|
fdt_for_each_subnode(fragment, fdto, 0) {
|
||||||
|
int overlay;
|
||||||
|
int target;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Each fragments will have an __overlay__ node. If
|
||||||
|
* they don't, it's not supposed to be merged
|
||||||
|
*/
|
||||||
|
overlay = fdt_subnode_offset(fdto, fragment, "__overlay__");
|
||||||
|
if (overlay == -FDT_ERR_NOTFOUND)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if (overlay < 0)
|
||||||
|
return overlay;
|
||||||
|
|
||||||
|
target = overlay_get_target(fdt, fdto, fragment, NULL);
|
||||||
|
if (target < 0)
|
||||||
|
return target;
|
||||||
|
|
||||||
|
ret = overlay_apply_node(fdt, target, fdto, overlay);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int get_path_len(const void *fdt, int nodeoffset)
|
||||||
|
{
|
||||||
|
int len = 0, namelen;
|
||||||
|
const char *name;
|
||||||
|
|
||||||
|
FDT_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
|
for (;;) {
|
||||||
|
name = fdt_get_name(fdt, nodeoffset, &namelen);
|
||||||
|
if (!name)
|
||||||
|
return namelen;
|
||||||
|
|
||||||
|
/* root? we're done */
|
||||||
|
if (namelen == 0)
|
||||||
|
break;
|
||||||
|
|
||||||
|
nodeoffset = fdt_parent_offset(fdt, nodeoffset);
|
||||||
|
if (nodeoffset < 0)
|
||||||
|
return nodeoffset;
|
||||||
|
len += namelen + 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* in case of root pretend it's "/" */
|
||||||
|
if (len == 0)
|
||||||
|
len++;
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* overlay_symbol_update - Update the symbols of base tree after a merge
|
||||||
|
* @fdt: Base Device Tree blob
|
||||||
|
* @fdto: Device tree overlay blob
|
||||||
|
*
|
||||||
|
* overlay_symbol_update() updates the symbols of the base tree with the
|
||||||
|
* symbols of the applied overlay
|
||||||
|
*
|
||||||
|
* This is the last step in the device tree overlay application
|
||||||
|
* process, allowing the reference of overlay symbols by subsequent
|
||||||
|
* overlay operations.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 on success
|
||||||
|
* Negative error code on failure
|
||||||
|
*/
|
||||||
|
static int overlay_symbol_update(void *fdt, void *fdto)
|
||||||
|
{
|
||||||
|
int root_sym, ov_sym, prop, path_len, fragment, target;
|
||||||
|
int len, frag_name_len, ret, rel_path_len;
|
||||||
|
const char *s, *e;
|
||||||
|
const char *path;
|
||||||
|
const char *name;
|
||||||
|
const char *frag_name;
|
||||||
|
const char *rel_path;
|
||||||
|
const char *target_path;
|
||||||
|
char *buf;
|
||||||
|
void *p;
|
||||||
|
|
||||||
|
ov_sym = fdt_subnode_offset(fdto, 0, "__symbols__");
|
||||||
|
|
||||||
|
/* if no overlay symbols exist no problem */
|
||||||
|
if (ov_sym < 0)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
root_sym = fdt_subnode_offset(fdt, 0, "__symbols__");
|
||||||
|
|
||||||
|
/* it no root symbols exist we should create them */
|
||||||
|
if (root_sym == -FDT_ERR_NOTFOUND)
|
||||||
|
root_sym = fdt_add_subnode(fdt, 0, "__symbols__");
|
||||||
|
|
||||||
|
/* any error is fatal now */
|
||||||
|
if (root_sym < 0)
|
||||||
|
return root_sym;
|
||||||
|
|
||||||
|
/* iterate over each overlay symbol */
|
||||||
|
fdt_for_each_property_offset(prop, fdto, ov_sym) {
|
||||||
|
path = fdt_getprop_by_offset(fdto, prop, &name, &path_len);
|
||||||
|
if (!path)
|
||||||
|
return path_len;
|
||||||
|
|
||||||
|
/* verify it's a string property (terminated by a single \0) */
|
||||||
|
if (path_len < 1 || memchr(path, '\0', path_len) != &path[path_len - 1])
|
||||||
|
return -FDT_ERR_BADVALUE;
|
||||||
|
|
||||||
|
/* keep end marker to avoid strlen() */
|
||||||
|
e = path + path_len;
|
||||||
|
|
||||||
|
/* format: /<fragment-name>/__overlay__/<relative-subnode-path> */
|
||||||
|
|
||||||
|
if (*path != '/')
|
||||||
|
return -FDT_ERR_BADVALUE;
|
||||||
|
|
||||||
|
/* get fragment name first */
|
||||||
|
s = strchr(path + 1, '/');
|
||||||
|
if (!s)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
frag_name = path + 1;
|
||||||
|
frag_name_len = s - path - 1;
|
||||||
|
|
||||||
|
/* verify format; safe since "s" lies in \0 terminated prop */
|
||||||
|
len = sizeof("/__overlay__/") - 1;
|
||||||
|
if ((e - s) < len || memcmp(s, "/__overlay__/", len))
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
rel_path = s + len;
|
||||||
|
rel_path_len = e - rel_path;
|
||||||
|
|
||||||
|
/* find the fragment index in which the symbol lies */
|
||||||
|
ret = fdt_subnode_offset_namelen(fdto, 0, frag_name,
|
||||||
|
frag_name_len);
|
||||||
|
/* not found? */
|
||||||
|
if (ret < 0)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
fragment = ret;
|
||||||
|
|
||||||
|
/* an __overlay__ subnode must exist */
|
||||||
|
ret = fdt_subnode_offset(fdto, fragment, "__overlay__");
|
||||||
|
if (ret < 0)
|
||||||
|
return -FDT_ERR_BADOVERLAY;
|
||||||
|
|
||||||
|
/* get the target of the fragment */
|
||||||
|
ret = overlay_get_target(fdt, fdto, fragment, &target_path);
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
target = ret;
|
||||||
|
|
||||||
|
/* if we have a target path use */
|
||||||
|
if (!target_path) {
|
||||||
|
ret = get_path_len(fdt, target);
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
len = ret;
|
||||||
|
} else {
|
||||||
|
len = strlen(target_path);
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = fdt_setprop_placeholder(fdt, root_sym, name,
|
||||||
|
len + (len > 1) + rel_path_len + 1, &p);
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
if (!target_path) {
|
||||||
|
/* again in case setprop_placeholder changed it */
|
||||||
|
ret = overlay_get_target(fdt, fdto, fragment, &target_path);
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
target = ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
buf = p;
|
||||||
|
if (len > 1) { /* target is not root */
|
||||||
|
if (!target_path) {
|
||||||
|
ret = fdt_get_path(fdt, target, buf, len + 1);
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
} else
|
||||||
|
memcpy(buf, target_path, len + 1);
|
||||||
|
|
||||||
|
} else
|
||||||
|
len--;
|
||||||
|
|
||||||
|
buf[len] = '/';
|
||||||
|
memcpy(buf + len + 1, rel_path, rel_path_len);
|
||||||
|
buf[len + 1 + rel_path_len] = '\0';
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_overlay_apply(void *fdt, void *fdto)
|
||||||
|
{
|
||||||
|
uint32_t delta = fdt_get_max_phandle(fdt);
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
FDT_CHECK_HEADER(fdt);
|
||||||
|
FDT_CHECK_HEADER(fdto);
|
||||||
|
|
||||||
|
ret = overlay_adjust_local_phandles(fdto, delta);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = overlay_update_local_references(fdto, delta);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = overlay_fixup_phandles(fdt, fdto);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = overlay_merge(fdt, fdto);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = overlay_symbol_update(fdt, fdto);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The overlay has been damaged, erase its magic.
|
||||||
|
*/
|
||||||
|
fdt_set_magic(fdto, ~0);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
err:
|
||||||
|
/*
|
||||||
|
* The overlay might have been damaged, erase its magic.
|
||||||
|
*/
|
||||||
|
fdt_set_magic(fdto, ~0);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The base device tree might have been damaged, erase its
|
||||||
|
* magic.
|
||||||
|
*/
|
||||||
|
fdt_set_magic(fdt, ~0);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
@ -55,12 +55,12 @@
|
|||||||
|
|
||||||
#include "libfdt_internal.h"
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
static int _fdt_nodename_eq(const void *fdt, int offset,
|
static int fdt_nodename_eq_(const void *fdt, int offset,
|
||||||
const char *s, int len)
|
const char *s, int len)
|
||||||
{
|
{
|
||||||
const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
|
const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
|
||||||
|
|
||||||
if (! p)
|
if (!p)
|
||||||
/* short match */
|
/* short match */
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
@ -80,7 +80,7 @@ const char *fdt_string(const void *fdt, int stroffset)
|
|||||||
return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
|
return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_string_eq(const void *fdt, int stroffset,
|
static int fdt_string_eq_(const void *fdt, int stroffset,
|
||||||
const char *s, int len)
|
const char *s, int len)
|
||||||
{
|
{
|
||||||
const char *p = fdt_string(fdt, stroffset);
|
const char *p = fdt_string(fdt, stroffset);
|
||||||
@ -88,11 +88,37 @@ static int _fdt_string_eq(const void *fdt, int stroffset,
|
|||||||
return (strlen(p) == len) && (memcmp(p, s, len) == 0);
|
return (strlen(p) == len) && (memcmp(p, s, len) == 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
uint32_t fdt_get_max_phandle(const void *fdt)
|
||||||
|
{
|
||||||
|
uint32_t max_phandle = 0;
|
||||||
|
int offset;
|
||||||
|
|
||||||
|
for (offset = fdt_next_node(fdt, -1, NULL);;
|
||||||
|
offset = fdt_next_node(fdt, offset, NULL)) {
|
||||||
|
uint32_t phandle;
|
||||||
|
|
||||||
|
if (offset == -FDT_ERR_NOTFOUND)
|
||||||
|
return max_phandle;
|
||||||
|
|
||||||
|
if (offset < 0)
|
||||||
|
return (uint32_t)-1;
|
||||||
|
|
||||||
|
phandle = fdt_get_phandle(fdt, offset);
|
||||||
|
if (phandle == (uint32_t)-1)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if (phandle > max_phandle)
|
||||||
|
max_phandle = phandle;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
|
int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
|
||||||
{
|
{
|
||||||
FDT_CHECK_HEADER(fdt);
|
FDT_CHECK_HEADER(fdt);
|
||||||
*address = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->address);
|
*address = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->address);
|
||||||
*size = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->size);
|
*size = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->size);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -100,12 +126,12 @@ int fdt_num_mem_rsv(const void *fdt)
|
|||||||
{
|
{
|
||||||
int i = 0;
|
int i = 0;
|
||||||
|
|
||||||
while (fdt64_to_cpu(_fdt_mem_rsv(fdt, i)->size) != 0)
|
while (fdt64_to_cpu(fdt_mem_rsv_(fdt, i)->size) != 0)
|
||||||
i++;
|
i++;
|
||||||
return i;
|
return i;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _nextprop(const void *fdt, int offset)
|
static int nextprop_(const void *fdt, int offset)
|
||||||
{
|
{
|
||||||
uint32_t tag;
|
uint32_t tag;
|
||||||
int nextoffset;
|
int nextoffset;
|
||||||
@ -140,7 +166,7 @@ int fdt_subnode_offset_namelen(const void *fdt, int offset,
|
|||||||
(offset >= 0) && (depth >= 0);
|
(offset >= 0) && (depth >= 0);
|
||||||
offset = fdt_next_node(fdt, offset, &depth))
|
offset = fdt_next_node(fdt, offset, &depth))
|
||||||
if ((depth == 1)
|
if ((depth == 1)
|
||||||
&& _fdt_nodename_eq(fdt, offset, name, namelen))
|
&& fdt_nodename_eq_(fdt, offset, name, namelen))
|
||||||
return offset;
|
return offset;
|
||||||
|
|
||||||
if (depth < 0)
|
if (depth < 0)
|
||||||
@ -154,9 +180,9 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
|
|||||||
return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
|
return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_path_offset(const void *fdt, const char *path)
|
int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
|
||||||
{
|
{
|
||||||
const char *end = path + strlen(path);
|
const char *end = path + namelen;
|
||||||
const char *p = path;
|
const char *p = path;
|
||||||
int offset = 0;
|
int offset = 0;
|
||||||
|
|
||||||
@ -164,7 +190,7 @@ int fdt_path_offset(const void *fdt, const char *path)
|
|||||||
|
|
||||||
/* see if we have an alias */
|
/* see if we have an alias */
|
||||||
if (*path != '/') {
|
if (*path != '/') {
|
||||||
const char *q = strchr(path, '/');
|
const char *q = memchr(path, '/', end - p);
|
||||||
|
|
||||||
if (!q)
|
if (!q)
|
||||||
q = end;
|
q = end;
|
||||||
@ -177,14 +203,15 @@ int fdt_path_offset(const void *fdt, const char *path)
|
|||||||
p = q;
|
p = q;
|
||||||
}
|
}
|
||||||
|
|
||||||
while (*p) {
|
while (p < end) {
|
||||||
const char *q;
|
const char *q;
|
||||||
|
|
||||||
while (*p == '/')
|
while (*p == '/') {
|
||||||
p++;
|
p++;
|
||||||
if (! *p)
|
if (p == end)
|
||||||
return offset;
|
return offset;
|
||||||
q = strchr(p, '/');
|
}
|
||||||
|
q = memchr(p, '/', end - p);
|
||||||
if (! q)
|
if (! q)
|
||||||
q = end;
|
q = end;
|
||||||
|
|
||||||
@ -198,13 +225,18 @@ int fdt_path_offset(const void *fdt, const char *path)
|
|||||||
return offset;
|
return offset;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int fdt_path_offset(const void *fdt, const char *path)
|
||||||
|
{
|
||||||
|
return fdt_path_offset_namelen(fdt, path, strlen(path));
|
||||||
|
}
|
||||||
|
|
||||||
const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
|
const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
|
||||||
{
|
{
|
||||||
const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
|
const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset);
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
if (((err = fdt_check_header(fdt)) != 0)
|
if (((err = fdt_check_header(fdt)) != 0)
|
||||||
|| ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
|
|| ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0))
|
||||||
goto fail;
|
goto fail;
|
||||||
|
|
||||||
if (len)
|
if (len)
|
||||||
@ -222,18 +254,18 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset)
|
|||||||
{
|
{
|
||||||
int offset;
|
int offset;
|
||||||
|
|
||||||
if ((offset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
|
if ((offset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
|
||||||
return offset;
|
return offset;
|
||||||
|
|
||||||
return _nextprop(fdt, offset);
|
return nextprop_(fdt, offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_next_property_offset(const void *fdt, int offset)
|
int fdt_next_property_offset(const void *fdt, int offset)
|
||||||
{
|
{
|
||||||
if ((offset = _fdt_check_prop_offset(fdt, offset)) < 0)
|
if ((offset = fdt_check_prop_offset_(fdt, offset)) < 0)
|
||||||
return offset;
|
return offset;
|
||||||
|
|
||||||
return _nextprop(fdt, offset);
|
return nextprop_(fdt, offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
|
const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
|
||||||
@ -243,13 +275,13 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
|
|||||||
int err;
|
int err;
|
||||||
const struct fdt_property *prop;
|
const struct fdt_property *prop;
|
||||||
|
|
||||||
if ((err = _fdt_check_prop_offset(fdt, offset)) < 0) {
|
if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) {
|
||||||
if (lenp)
|
if (lenp)
|
||||||
*lenp = err;
|
*lenp = err;
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
prop = _fdt_offset_ptr(fdt, offset);
|
prop = fdt_offset_ptr_(fdt, offset);
|
||||||
|
|
||||||
if (lenp)
|
if (lenp)
|
||||||
*lenp = fdt32_to_cpu(prop->len);
|
*lenp = fdt32_to_cpu(prop->len);
|
||||||
@ -271,7 +303,7 @@ const struct fdt_property *fdt_get_property_namelen(const void *fdt,
|
|||||||
offset = -FDT_ERR_INTERNAL;
|
offset = -FDT_ERR_INTERNAL;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
if (_fdt_string_eq(fdt, fdt32_to_cpu(prop->nameoff),
|
if (fdt_string_eq_(fdt, fdt32_to_cpu(prop->nameoff),
|
||||||
name, namelen))
|
name, namelen))
|
||||||
return prop;
|
return prop;
|
||||||
}
|
}
|
||||||
@ -295,7 +327,7 @@ const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
|
|||||||
const struct fdt_property *prop;
|
const struct fdt_property *prop;
|
||||||
|
|
||||||
prop = fdt_get_property_namelen(fdt, nodeoffset, name, namelen, lenp);
|
prop = fdt_get_property_namelen(fdt, nodeoffset, name, namelen, lenp);
|
||||||
if (! prop)
|
if (!prop)
|
||||||
return NULL;
|
return NULL;
|
||||||
|
|
||||||
return prop->data;
|
return prop->data;
|
||||||
@ -322,7 +354,7 @@ const void *fdt_getprop(const void *fdt, int nodeoffset,
|
|||||||
|
|
||||||
uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
|
uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
|
||||||
{
|
{
|
||||||
const uint32_t *php;
|
const fdt32_t *php;
|
||||||
int len;
|
int len;
|
||||||
|
|
||||||
/* FIXME: This is a bit sub-optimal, since we potentially scan
|
/* FIXME: This is a bit sub-optimal, since we potentially scan
|
||||||
@ -515,8 +547,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
|
|||||||
return offset; /* error from fdt_next_node() */
|
return offset; /* error from fdt_next_node() */
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_stringlist_contains(const char *strlist, int listlen,
|
int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
|
||||||
const char *str)
|
|
||||||
{
|
{
|
||||||
int len = strlen(str);
|
int len = strlen(str);
|
||||||
const char *p;
|
const char *p;
|
||||||
@ -533,6 +564,106 @@ static int _fdt_stringlist_contains(const char *strlist, int listlen,
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property)
|
||||||
|
{
|
||||||
|
const char *list, *end;
|
||||||
|
int length, count = 0;
|
||||||
|
|
||||||
|
list = fdt_getprop(fdt, nodeoffset, property, &length);
|
||||||
|
if (!list)
|
||||||
|
return length;
|
||||||
|
|
||||||
|
end = list + length;
|
||||||
|
|
||||||
|
while (list < end) {
|
||||||
|
length = strnlen(list, end - list) + 1;
|
||||||
|
|
||||||
|
/* Abort if the last string isn't properly NUL-terminated. */
|
||||||
|
if (list + length > end)
|
||||||
|
return -FDT_ERR_BADVALUE;
|
||||||
|
|
||||||
|
list += length;
|
||||||
|
count++;
|
||||||
|
}
|
||||||
|
|
||||||
|
return count;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
|
||||||
|
const char *string)
|
||||||
|
{
|
||||||
|
int length, len, idx = 0;
|
||||||
|
const char *list, *end;
|
||||||
|
|
||||||
|
list = fdt_getprop(fdt, nodeoffset, property, &length);
|
||||||
|
if (!list)
|
||||||
|
return length;
|
||||||
|
|
||||||
|
len = strlen(string) + 1;
|
||||||
|
end = list + length;
|
||||||
|
|
||||||
|
while (list < end) {
|
||||||
|
length = strnlen(list, end - list) + 1;
|
||||||
|
|
||||||
|
/* Abort if the last string isn't properly NUL-terminated. */
|
||||||
|
if (list + length > end)
|
||||||
|
return -FDT_ERR_BADVALUE;
|
||||||
|
|
||||||
|
if (length == len && memcmp(list, string, length) == 0)
|
||||||
|
return idx;
|
||||||
|
|
||||||
|
list += length;
|
||||||
|
idx++;
|
||||||
|
}
|
||||||
|
|
||||||
|
return -FDT_ERR_NOTFOUND;
|
||||||
|
}
|
||||||
|
|
||||||
|
const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
|
||||||
|
const char *property, int idx,
|
||||||
|
int *lenp)
|
||||||
|
{
|
||||||
|
const char *list, *end;
|
||||||
|
int length;
|
||||||
|
|
||||||
|
list = fdt_getprop(fdt, nodeoffset, property, &length);
|
||||||
|
if (!list) {
|
||||||
|
if (lenp)
|
||||||
|
*lenp = length;
|
||||||
|
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
end = list + length;
|
||||||
|
|
||||||
|
while (list < end) {
|
||||||
|
length = strnlen(list, end - list) + 1;
|
||||||
|
|
||||||
|
/* Abort if the last string isn't properly NUL-terminated. */
|
||||||
|
if (list + length > end) {
|
||||||
|
if (lenp)
|
||||||
|
*lenp = -FDT_ERR_BADVALUE;
|
||||||
|
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (idx == 0) {
|
||||||
|
if (lenp)
|
||||||
|
*lenp = length - 1;
|
||||||
|
|
||||||
|
return list;
|
||||||
|
}
|
||||||
|
|
||||||
|
list += length;
|
||||||
|
idx--;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (lenp)
|
||||||
|
*lenp = -FDT_ERR_NOTFOUND;
|
||||||
|
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
int fdt_node_check_compatible(const void *fdt, int nodeoffset,
|
int fdt_node_check_compatible(const void *fdt, int nodeoffset,
|
||||||
const char *compatible)
|
const char *compatible)
|
||||||
{
|
{
|
||||||
@ -542,10 +673,8 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
|
|||||||
prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
|
prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
|
||||||
if (!prop)
|
if (!prop)
|
||||||
return len;
|
return len;
|
||||||
if (_fdt_stringlist_contains(prop, len, compatible))
|
|
||||||
return 0;
|
return !fdt_stringlist_contains(prop, len, compatible);
|
||||||
else
|
|
||||||
return 1;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
|
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
|
||||||
|
@ -55,8 +55,8 @@
|
|||||||
|
|
||||||
#include "libfdt_internal.h"
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
static int _fdt_blocks_misordered(const void *fdt,
|
static int fdt_blocks_misordered_(const void *fdt,
|
||||||
int mem_rsv_size, int struct_size)
|
int mem_rsv_size, int struct_size)
|
||||||
{
|
{
|
||||||
return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
|
return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
|
||||||
|| (fdt_off_dt_struct(fdt) <
|
|| (fdt_off_dt_struct(fdt) <
|
||||||
@ -67,13 +67,13 @@ static int _fdt_blocks_misordered(const void *fdt,
|
|||||||
(fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
|
(fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_rw_check_header(void *fdt)
|
static int fdt_rw_check_header_(void *fdt)
|
||||||
{
|
{
|
||||||
FDT_CHECK_HEADER(fdt);
|
FDT_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
if (fdt_version(fdt) < 17)
|
if (fdt_version(fdt) < 17)
|
||||||
return -FDT_ERR_BADVERSION;
|
return -FDT_ERR_BADVERSION;
|
||||||
if (_fdt_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
|
if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),
|
||||||
fdt_size_dt_struct(fdt)))
|
fdt_size_dt_struct(fdt)))
|
||||||
return -FDT_ERR_BADLAYOUT;
|
return -FDT_ERR_BADLAYOUT;
|
||||||
if (fdt_version(fdt) > 17)
|
if (fdt_version(fdt) > 17)
|
||||||
@ -84,35 +84,37 @@ static int _fdt_rw_check_header(void *fdt)
|
|||||||
|
|
||||||
#define FDT_RW_CHECK_HEADER(fdt) \
|
#define FDT_RW_CHECK_HEADER(fdt) \
|
||||||
{ \
|
{ \
|
||||||
int err; \
|
int err_; \
|
||||||
if ((err = _fdt_rw_check_header(fdt)) != 0) \
|
if ((err_ = fdt_rw_check_header_(fdt)) != 0) \
|
||||||
return err; \
|
return err_; \
|
||||||
}
|
}
|
||||||
|
|
||||||
static inline int _fdt_data_size(void *fdt)
|
static inline int fdt_data_size_(void *fdt)
|
||||||
{
|
{
|
||||||
return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
|
return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
|
static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
|
||||||
{
|
{
|
||||||
char *p = splicepoint;
|
char *p = splicepoint;
|
||||||
char *end = (char *)fdt + _fdt_data_size(fdt);
|
char *end = (char *)fdt + fdt_data_size_(fdt);
|
||||||
|
|
||||||
if (((p + oldlen) < p) || ((p + oldlen) > end))
|
if (((p + oldlen) < p) || ((p + oldlen) > end))
|
||||||
return -FDT_ERR_BADOFFSET;
|
return -FDT_ERR_BADOFFSET;
|
||||||
|
if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
|
||||||
|
return -FDT_ERR_BADOFFSET;
|
||||||
if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
|
if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
memmove(p + newlen, p + oldlen, end - p - oldlen);
|
memmove(p + newlen, p + oldlen, end - p - oldlen);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
|
static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p,
|
||||||
int oldn, int newn)
|
int oldn, int newn)
|
||||||
{
|
{
|
||||||
int delta = (newn - oldn) * sizeof(*p);
|
int delta = (newn - oldn) * sizeof(*p);
|
||||||
int err;
|
int err;
|
||||||
err = _fdt_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
|
err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
|
fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
|
||||||
@ -120,13 +122,13 @@ static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_splice_struct(void *fdt, void *p,
|
static int fdt_splice_struct_(void *fdt, void *p,
|
||||||
int oldlen, int newlen)
|
int oldlen, int newlen)
|
||||||
{
|
{
|
||||||
int delta = newlen - oldlen;
|
int delta = newlen - oldlen;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
if ((err = _fdt_splice(fdt, p, oldlen, newlen)))
|
if ((err = fdt_splice_(fdt, p, oldlen, newlen)))
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
|
fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
|
||||||
@ -134,20 +136,20 @@ static int _fdt_splice_struct(void *fdt, void *p,
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_splice_string(void *fdt, int newlen)
|
static int fdt_splice_string_(void *fdt, int newlen)
|
||||||
{
|
{
|
||||||
void *p = (char *)fdt
|
void *p = (char *)fdt
|
||||||
+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
|
+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
if ((err = _fdt_splice(fdt, p, 0, newlen)))
|
if ((err = fdt_splice_(fdt, p, 0, newlen)))
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
|
fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_find_add_string(void *fdt, const char *s)
|
static int fdt_find_add_string_(void *fdt, const char *s)
|
||||||
{
|
{
|
||||||
char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
|
char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
|
||||||
const char *p;
|
const char *p;
|
||||||
@ -155,13 +157,13 @@ static int _fdt_find_add_string(void *fdt, const char *s)
|
|||||||
int len = strlen(s) + 1;
|
int len = strlen(s) + 1;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
|
p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);
|
||||||
if (p)
|
if (p)
|
||||||
/* found it */
|
/* found it */
|
||||||
return (p - strtab);
|
return (p - strtab);
|
||||||
|
|
||||||
new = strtab + fdt_size_dt_strings(fdt);
|
new = strtab + fdt_size_dt_strings(fdt);
|
||||||
err = _fdt_splice_string(fdt, len);
|
err = fdt_splice_string_(fdt, len);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
@ -176,8 +178,8 @@ int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
|
|||||||
|
|
||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
|
re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt));
|
||||||
err = _fdt_splice_mem_rsv(fdt, re, 0, 1);
|
err = fdt_splice_mem_rsv_(fdt, re, 0, 1);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
@ -188,31 +190,27 @@ int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
|
|||||||
|
|
||||||
int fdt_del_mem_rsv(void *fdt, int n)
|
int fdt_del_mem_rsv(void *fdt, int n)
|
||||||
{
|
{
|
||||||
struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
|
struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n);
|
||||||
int err;
|
|
||||||
|
|
||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
if (n >= fdt_num_mem_rsv(fdt))
|
if (n >= fdt_num_mem_rsv(fdt))
|
||||||
return -FDT_ERR_NOTFOUND;
|
return -FDT_ERR_NOTFOUND;
|
||||||
|
|
||||||
err = _fdt_splice_mem_rsv(fdt, re, 1, 0);
|
return fdt_splice_mem_rsv_(fdt, re, 1, 0);
|
||||||
if (err)
|
|
||||||
return err;
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
|
static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name,
|
||||||
int len, struct fdt_property **prop)
|
int len, struct fdt_property **prop)
|
||||||
{
|
{
|
||||||
int oldlen;
|
int oldlen;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
|
*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
|
||||||
if (! (*prop))
|
if (!*prop)
|
||||||
return oldlen;
|
return oldlen;
|
||||||
|
|
||||||
if ((err = _fdt_splice_struct(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
|
if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
|
||||||
FDT_TAGALIGN(len))))
|
FDT_TAGALIGN(len))))
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
@ -220,7 +218,7 @@ static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
|
static int fdt_add_property_(void *fdt, int nodeoffset, const char *name,
|
||||||
int len, struct fdt_property **prop)
|
int len, struct fdt_property **prop)
|
||||||
{
|
{
|
||||||
int proplen;
|
int proplen;
|
||||||
@ -228,17 +226,17 @@ static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
|
|||||||
int namestroff;
|
int namestroff;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
if ((nextoffset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
|
if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
|
||||||
return nextoffset;
|
return nextoffset;
|
||||||
|
|
||||||
namestroff = _fdt_find_add_string(fdt, name);
|
namestroff = fdt_find_add_string_(fdt, name);
|
||||||
if (namestroff < 0)
|
if (namestroff < 0)
|
||||||
return namestroff;
|
return namestroff;
|
||||||
|
|
||||||
*prop = _fdt_offset_ptr_w(fdt, nextoffset);
|
*prop = fdt_offset_ptr_w_(fdt, nextoffset);
|
||||||
proplen = sizeof(**prop) + FDT_TAGALIGN(len);
|
proplen = sizeof(**prop) + FDT_TAGALIGN(len);
|
||||||
|
|
||||||
err = _fdt_splice_struct(fdt, *prop, 0, proplen);
|
err = fdt_splice_struct_(fdt, *prop, 0, proplen);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
@ -262,7 +260,7 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)
|
|||||||
|
|
||||||
newlen = strlen(name);
|
newlen = strlen(name);
|
||||||
|
|
||||||
err = _fdt_splice_struct(fdt, namep, FDT_TAGALIGN(oldlen+1),
|
err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen+1),
|
||||||
FDT_TAGALIGN(newlen+1));
|
FDT_TAGALIGN(newlen+1));
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
@ -271,21 +269,36 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_setprop(void *fdt, int nodeoffset, const char *name,
|
int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
|
||||||
const void *val, int len)
|
int len, void **prop_data)
|
||||||
{
|
{
|
||||||
struct fdt_property *prop;
|
struct fdt_property *prop;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
err = _fdt_resize_property(fdt, nodeoffset, name, len, &prop);
|
err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop);
|
||||||
if (err == -FDT_ERR_NOTFOUND)
|
if (err == -FDT_ERR_NOTFOUND)
|
||||||
err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
|
err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
memcpy(prop->data, val, len);
|
*prop_data = prop->data;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_setprop(void *fdt, int nodeoffset, const char *name,
|
||||||
|
const void *val, int len)
|
||||||
|
{
|
||||||
|
void *prop_data;
|
||||||
|
int err;
|
||||||
|
|
||||||
|
err = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data);
|
||||||
|
if (err)
|
||||||
|
return err;
|
||||||
|
|
||||||
|
if (len)
|
||||||
|
memcpy(prop_data, val, len);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -300,7 +313,7 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
|
|||||||
prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
|
prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
|
||||||
if (prop) {
|
if (prop) {
|
||||||
newlen = len + oldlen;
|
newlen = len + oldlen;
|
||||||
err = _fdt_splice_struct(fdt, prop->data,
|
err = fdt_splice_struct_(fdt, prop->data,
|
||||||
FDT_TAGALIGN(oldlen),
|
FDT_TAGALIGN(oldlen),
|
||||||
FDT_TAGALIGN(newlen));
|
FDT_TAGALIGN(newlen));
|
||||||
if (err)
|
if (err)
|
||||||
@ -308,7 +321,7 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
|
|||||||
prop->len = cpu_to_fdt32(newlen);
|
prop->len = cpu_to_fdt32(newlen);
|
||||||
memcpy(prop->data + oldlen, val, len);
|
memcpy(prop->data + oldlen, val, len);
|
||||||
} else {
|
} else {
|
||||||
err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
|
err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
memcpy(prop->data, val, len);
|
memcpy(prop->data, val, len);
|
||||||
@ -324,11 +337,11 @@ int fdt_delprop(void *fdt, int nodeoffset, const char *name)
|
|||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
|
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
|
||||||
if (! prop)
|
if (!prop)
|
||||||
return len;
|
return len;
|
||||||
|
|
||||||
proplen = sizeof(*prop) + FDT_TAGALIGN(len);
|
proplen = sizeof(*prop) + FDT_TAGALIGN(len);
|
||||||
return _fdt_splice_struct(fdt, prop, proplen, 0);
|
return fdt_splice_struct_(fdt, prop, proplen, 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
||||||
@ -339,7 +352,7 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
|||||||
int nodelen;
|
int nodelen;
|
||||||
int err;
|
int err;
|
||||||
uint32_t tag;
|
uint32_t tag;
|
||||||
uint32_t *endtag;
|
fdt32_t *endtag;
|
||||||
|
|
||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
@ -356,17 +369,17 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
|||||||
tag = fdt_next_tag(fdt, offset, &nextoffset);
|
tag = fdt_next_tag(fdt, offset, &nextoffset);
|
||||||
} while ((tag == FDT_PROP) || (tag == FDT_NOP));
|
} while ((tag == FDT_PROP) || (tag == FDT_NOP));
|
||||||
|
|
||||||
nh = _fdt_offset_ptr_w(fdt, offset);
|
nh = fdt_offset_ptr_w_(fdt, offset);
|
||||||
nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
|
nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
|
||||||
|
|
||||||
err = _fdt_splice_struct(fdt, nh, 0, nodelen);
|
err = fdt_splice_struct_(fdt, nh, 0, nodelen);
|
||||||
if (err)
|
if (err)
|
||||||
return err;
|
return err;
|
||||||
|
|
||||||
nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
|
nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
|
||||||
memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
|
memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
|
||||||
memcpy(nh->name, name, namelen);
|
memcpy(nh->name, name, namelen);
|
||||||
endtag = (uint32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
|
endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
|
||||||
*endtag = cpu_to_fdt32(FDT_END_NODE);
|
*endtag = cpu_to_fdt32(FDT_END_NODE);
|
||||||
|
|
||||||
return offset;
|
return offset;
|
||||||
@ -383,15 +396,15 @@ int fdt_del_node(void *fdt, int nodeoffset)
|
|||||||
|
|
||||||
FDT_RW_CHECK_HEADER(fdt);
|
FDT_RW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
endoffset = _fdt_node_end_offset(fdt, nodeoffset);
|
endoffset = fdt_node_end_offset_(fdt, nodeoffset);
|
||||||
if (endoffset < 0)
|
if (endoffset < 0)
|
||||||
return endoffset;
|
return endoffset;
|
||||||
|
|
||||||
return _fdt_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
|
return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset),
|
||||||
endoffset - nodeoffset, 0);
|
endoffset - nodeoffset, 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void _fdt_packblocks(const char *old, char *new,
|
static void fdt_packblocks_(const char *old, char *new,
|
||||||
int mem_rsv_size, int struct_size)
|
int mem_rsv_size, int struct_size)
|
||||||
{
|
{
|
||||||
int mem_rsv_off, struct_off, strings_off;
|
int mem_rsv_off, struct_off, strings_off;
|
||||||
@ -437,7 +450,7 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
|
|||||||
return struct_size;
|
return struct_size;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
|
if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
|
||||||
/* no further work necessary */
|
/* no further work necessary */
|
||||||
err = fdt_move(fdt, buf, bufsize);
|
err = fdt_move(fdt, buf, bufsize);
|
||||||
if (err)
|
if (err)
|
||||||
@ -465,7 +478,7 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
|
|||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
}
|
}
|
||||||
|
|
||||||
_fdt_packblocks(fdt, tmp, mem_rsv_size, struct_size);
|
fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size);
|
||||||
memmove(buf, tmp, newsize);
|
memmove(buf, tmp, newsize);
|
||||||
|
|
||||||
fdt_set_magic(buf, FDT_MAGIC);
|
fdt_set_magic(buf, FDT_MAGIC);
|
||||||
@ -485,8 +498,8 @@ int fdt_pack(void *fdt)
|
|||||||
|
|
||||||
mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
|
mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
|
||||||
* sizeof(struct fdt_reserve_entry);
|
* sizeof(struct fdt_reserve_entry);
|
||||||
_fdt_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
|
fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
|
||||||
fdt_set_totalsize(fdt, _fdt_data_size(fdt));
|
fdt_set_totalsize(fdt, fdt_data_size_(fdt));
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
@ -69,6 +69,7 @@ static struct fdt_errtabent fdt_errtable[] = {
|
|||||||
|
|
||||||
FDT_ERRTABENT(FDT_ERR_BADOFFSET),
|
FDT_ERRTABENT(FDT_ERR_BADOFFSET),
|
||||||
FDT_ERRTABENT(FDT_ERR_BADPATH),
|
FDT_ERRTABENT(FDT_ERR_BADPATH),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
|
||||||
FDT_ERRTABENT(FDT_ERR_BADSTATE),
|
FDT_ERRTABENT(FDT_ERR_BADSTATE),
|
||||||
|
|
||||||
FDT_ERRTABENT(FDT_ERR_TRUNCATED),
|
FDT_ERRTABENT(FDT_ERR_TRUNCATED),
|
||||||
@ -76,6 +77,11 @@ static struct fdt_errtabent fdt_errtable[] = {
|
|||||||
FDT_ERRTABENT(FDT_ERR_BADVERSION),
|
FDT_ERRTABENT(FDT_ERR_BADVERSION),
|
||||||
FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
|
FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
|
||||||
FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
|
FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_INTERNAL),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_BADNCELLS),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_BADVALUE),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
|
||||||
|
FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
|
||||||
};
|
};
|
||||||
#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
|
#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
|
||||||
|
|
||||||
|
@ -55,7 +55,7 @@
|
|||||||
|
|
||||||
#include "libfdt_internal.h"
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
static int _fdt_sw_check_header(void *fdt)
|
static int fdt_sw_check_header_(void *fdt)
|
||||||
{
|
{
|
||||||
if (fdt_magic(fdt) != FDT_SW_MAGIC)
|
if (fdt_magic(fdt) != FDT_SW_MAGIC)
|
||||||
return -FDT_ERR_BADMAGIC;
|
return -FDT_ERR_BADMAGIC;
|
||||||
@ -66,11 +66,11 @@ static int _fdt_sw_check_header(void *fdt)
|
|||||||
#define FDT_SW_CHECK_HEADER(fdt) \
|
#define FDT_SW_CHECK_HEADER(fdt) \
|
||||||
{ \
|
{ \
|
||||||
int err; \
|
int err; \
|
||||||
if ((err = _fdt_sw_check_header(fdt)) != 0) \
|
if ((err = fdt_sw_check_header_(fdt)) != 0) \
|
||||||
return err; \
|
return err; \
|
||||||
}
|
}
|
||||||
|
|
||||||
static void *_fdt_grab_space(void *fdt, size_t len)
|
static void *fdt_grab_space_(void *fdt, size_t len)
|
||||||
{
|
{
|
||||||
int offset = fdt_size_dt_struct(fdt);
|
int offset = fdt_size_dt_struct(fdt);
|
||||||
int spaceleft;
|
int spaceleft;
|
||||||
@ -82,7 +82,7 @@ static void *_fdt_grab_space(void *fdt, size_t len)
|
|||||||
return NULL;
|
return NULL;
|
||||||
|
|
||||||
fdt_set_size_dt_struct(fdt, offset + len);
|
fdt_set_size_dt_struct(fdt, offset + len);
|
||||||
return _fdt_offset_ptr_w(fdt, offset);
|
return fdt_offset_ptr_w_(fdt, offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_create(void *buf, int bufsize)
|
int fdt_create(void *buf, int bufsize)
|
||||||
@ -107,6 +107,38 @@ int fdt_create(void *buf, int bufsize)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int fdt_resize(void *fdt, void *buf, int bufsize)
|
||||||
|
{
|
||||||
|
size_t headsize, tailsize;
|
||||||
|
char *oldtail, *newtail;
|
||||||
|
|
||||||
|
FDT_SW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
|
headsize = fdt_off_dt_struct(fdt);
|
||||||
|
tailsize = fdt_size_dt_strings(fdt);
|
||||||
|
|
||||||
|
if ((headsize + tailsize) > bufsize)
|
||||||
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
|
oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
|
||||||
|
newtail = (char *)buf + bufsize - tailsize;
|
||||||
|
|
||||||
|
/* Two cases to avoid clobbering data if the old and new
|
||||||
|
* buffers partially overlap */
|
||||||
|
if (buf <= fdt) {
|
||||||
|
memmove(buf, fdt, headsize);
|
||||||
|
memmove(newtail, oldtail, tailsize);
|
||||||
|
} else {
|
||||||
|
memmove(newtail, oldtail, tailsize);
|
||||||
|
memmove(buf, fdt, headsize);
|
||||||
|
}
|
||||||
|
|
||||||
|
fdt_set_off_dt_strings(buf, bufsize);
|
||||||
|
fdt_set_totalsize(buf, bufsize);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
|
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
|
||||||
{
|
{
|
||||||
struct fdt_reserve_entry *re;
|
struct fdt_reserve_entry *re;
|
||||||
@ -142,7 +174,7 @@ int fdt_begin_node(void *fdt, const char *name)
|
|||||||
|
|
||||||
FDT_SW_CHECK_HEADER(fdt);
|
FDT_SW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
|
nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
|
||||||
if (! nh)
|
if (! nh)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
@ -153,11 +185,11 @@ int fdt_begin_node(void *fdt, const char *name)
|
|||||||
|
|
||||||
int fdt_end_node(void *fdt)
|
int fdt_end_node(void *fdt)
|
||||||
{
|
{
|
||||||
uint32_t *en;
|
fdt32_t *en;
|
||||||
|
|
||||||
FDT_SW_CHECK_HEADER(fdt);
|
FDT_SW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
en = _fdt_grab_space(fdt, FDT_TAGSIZE);
|
en = fdt_grab_space_(fdt, FDT_TAGSIZE);
|
||||||
if (! en)
|
if (! en)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
@ -165,7 +197,7 @@ int fdt_end_node(void *fdt)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int _fdt_find_add_string(void *fdt, const char *s)
|
static int fdt_find_add_string_(void *fdt, const char *s)
|
||||||
{
|
{
|
||||||
char *strtab = (char *)fdt + fdt_totalsize(fdt);
|
char *strtab = (char *)fdt + fdt_totalsize(fdt);
|
||||||
const char *p;
|
const char *p;
|
||||||
@ -173,7 +205,7 @@ static int _fdt_find_add_string(void *fdt, const char *s)
|
|||||||
int len = strlen(s) + 1;
|
int len = strlen(s) + 1;
|
||||||
int struct_top, offset;
|
int struct_top, offset;
|
||||||
|
|
||||||
p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
|
p = fdt_find_string_(strtab - strtabsize, strtabsize, s);
|
||||||
if (p)
|
if (p)
|
||||||
return p - strtab;
|
return p - strtab;
|
||||||
|
|
||||||
@ -188,32 +220,44 @@ static int _fdt_find_add_string(void *fdt, const char *s)
|
|||||||
return offset;
|
return offset;
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_property(void *fdt, const char *name, const void *val, int len)
|
int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp)
|
||||||
{
|
{
|
||||||
struct fdt_property *prop;
|
struct fdt_property *prop;
|
||||||
int nameoff;
|
int nameoff;
|
||||||
|
|
||||||
FDT_SW_CHECK_HEADER(fdt);
|
FDT_SW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
nameoff = _fdt_find_add_string(fdt, name);
|
nameoff = fdt_find_add_string_(fdt, name);
|
||||||
if (nameoff == 0)
|
if (nameoff == 0)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
|
prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
|
||||||
if (! prop)
|
if (! prop)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
prop->tag = cpu_to_fdt32(FDT_PROP);
|
prop->tag = cpu_to_fdt32(FDT_PROP);
|
||||||
prop->nameoff = cpu_to_fdt32(nameoff);
|
prop->nameoff = cpu_to_fdt32(nameoff);
|
||||||
prop->len = cpu_to_fdt32(len);
|
prop->len = cpu_to_fdt32(len);
|
||||||
memcpy(prop->data, val, len);
|
*valp = prop->data;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_property(void *fdt, const char *name, const void *val, int len)
|
||||||
|
{
|
||||||
|
void *ptr;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = fdt_property_placeholder(fdt, name, len, &ptr);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
memcpy(ptr, val, len);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
int fdt_finish(void *fdt)
|
int fdt_finish(void *fdt)
|
||||||
{
|
{
|
||||||
char *p = (char *)fdt;
|
char *p = (char *)fdt;
|
||||||
uint32_t *end;
|
fdt32_t *end;
|
||||||
int oldstroffset, newstroffset;
|
int oldstroffset, newstroffset;
|
||||||
uint32_t tag;
|
uint32_t tag;
|
||||||
int offset, nextoffset;
|
int offset, nextoffset;
|
||||||
@ -221,7 +265,7 @@ int fdt_finish(void *fdt)
|
|||||||
FDT_SW_CHECK_HEADER(fdt);
|
FDT_SW_CHECK_HEADER(fdt);
|
||||||
|
|
||||||
/* Add terminator */
|
/* Add terminator */
|
||||||
end = _fdt_grab_space(fdt, sizeof(*end));
|
end = fdt_grab_space_(fdt, sizeof(*end));
|
||||||
if (! end)
|
if (! end)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
*end = cpu_to_fdt32(FDT_END);
|
*end = cpu_to_fdt32(FDT_END);
|
||||||
@ -237,7 +281,7 @@ int fdt_finish(void *fdt)
|
|||||||
while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
|
while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
|
||||||
if (tag == FDT_PROP) {
|
if (tag == FDT_PROP) {
|
||||||
struct fdt_property *prop =
|
struct fdt_property *prop =
|
||||||
_fdt_offset_ptr_w(fdt, offset);
|
fdt_offset_ptr_w_(fdt, offset);
|
||||||
int nameoff;
|
int nameoff;
|
||||||
|
|
||||||
nameoff = fdt32_to_cpu(prop->nameoff);
|
nameoff = fdt32_to_cpu(prop->nameoff);
|
||||||
|
@ -55,26 +55,47 @@
|
|||||||
|
|
||||||
#include "libfdt_internal.h"
|
#include "libfdt_internal.h"
|
||||||
|
|
||||||
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
|
int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
|
||||||
const void *val, int len)
|
const char *name, int namelen,
|
||||||
|
uint32_t idx, const void *val,
|
||||||
|
int len)
|
||||||
{
|
{
|
||||||
void *propval;
|
void *propval;
|
||||||
int proplen;
|
int proplen;
|
||||||
|
|
||||||
propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
|
propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
|
||||||
if (! propval)
|
&proplen);
|
||||||
|
if (!propval)
|
||||||
|
return proplen;
|
||||||
|
|
||||||
|
if (proplen < (len + idx))
|
||||||
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
|
memcpy((char *)propval + idx, val, len);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
|
||||||
|
const void *val, int len)
|
||||||
|
{
|
||||||
|
const void *propval;
|
||||||
|
int proplen;
|
||||||
|
|
||||||
|
propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
|
||||||
|
if (!propval)
|
||||||
return proplen;
|
return proplen;
|
||||||
|
|
||||||
if (proplen != len)
|
if (proplen != len)
|
||||||
return -FDT_ERR_NOSPACE;
|
return -FDT_ERR_NOSPACE;
|
||||||
|
|
||||||
memcpy(propval, val, len);
|
return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
|
||||||
return 0;
|
strlen(name), 0,
|
||||||
|
val, len);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void _fdt_nop_region(void *start, int len)
|
static void fdt_nop_region_(void *start, int len)
|
||||||
{
|
{
|
||||||
uint32_t *p;
|
fdt32_t *p;
|
||||||
|
|
||||||
for (p = start; (char *)p < ((char *)start + len); p++)
|
for (p = start; (char *)p < ((char *)start + len); p++)
|
||||||
*p = cpu_to_fdt32(FDT_NOP);
|
*p = cpu_to_fdt32(FDT_NOP);
|
||||||
@ -86,15 +107,15 @@ int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
|
|||||||
int len;
|
int len;
|
||||||
|
|
||||||
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
|
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
|
||||||
if (! prop)
|
if (!prop)
|
||||||
return len;
|
return len;
|
||||||
|
|
||||||
_fdt_nop_region(prop, len + sizeof(*prop));
|
fdt_nop_region_(prop, len + sizeof(*prop));
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
int _fdt_node_end_offset(void *fdt, int offset)
|
int fdt_node_end_offset_(void *fdt, int offset)
|
||||||
{
|
{
|
||||||
int depth = 0;
|
int depth = 0;
|
||||||
|
|
||||||
@ -108,11 +129,11 @@ int fdt_nop_node(void *fdt, int nodeoffset)
|
|||||||
{
|
{
|
||||||
int endoffset;
|
int endoffset;
|
||||||
|
|
||||||
endoffset = _fdt_node_end_offset(fdt, nodeoffset);
|
endoffset = fdt_node_end_offset_(fdt, nodeoffset);
|
||||||
if (endoffset < 0)
|
if (endoffset < 0)
|
||||||
return endoffset;
|
return endoffset;
|
||||||
|
|
||||||
_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
|
fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
|
||||||
endoffset - nodeoffset);
|
endoffset - nodeoffset);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
@ -1,5 +1,5 @@
|
|||||||
#ifndef _LIBFDT_H
|
#ifndef LIBFDT_H
|
||||||
#define _LIBFDT_H
|
#define LIBFDT_H
|
||||||
/*
|
/*
|
||||||
* libfdt - Flat Device Tree manipulation
|
* libfdt - Flat Device Tree manipulation
|
||||||
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
||||||
@ -61,7 +61,7 @@
|
|||||||
#define FDT_ERR_NOTFOUND 1
|
#define FDT_ERR_NOTFOUND 1
|
||||||
/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
|
/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
|
||||||
#define FDT_ERR_EXISTS 2
|
#define FDT_ERR_EXISTS 2
|
||||||
/* FDT_ERR_EXISTS: Attemped to create a node or property which
|
/* FDT_ERR_EXISTS: Attempted to create a node or property which
|
||||||
* already exists */
|
* already exists */
|
||||||
#define FDT_ERR_NOSPACE 3
|
#define FDT_ERR_NOSPACE 3
|
||||||
/* FDT_ERR_NOSPACE: Operation needed to expand the device
|
/* FDT_ERR_NOSPACE: Operation needed to expand the device
|
||||||
@ -79,8 +79,10 @@
|
|||||||
* (e.g. missing a leading / for a function which requires an
|
* (e.g. missing a leading / for a function which requires an
|
||||||
* absolute path) */
|
* absolute path) */
|
||||||
#define FDT_ERR_BADPHANDLE 6
|
#define FDT_ERR_BADPHANDLE 6
|
||||||
/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle
|
/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle.
|
||||||
* value. phandle values of 0 and -1 are not permitted. */
|
* This can be caused either by an invalid phandle property
|
||||||
|
* length, or the phandle value was either 0 or -1, which are
|
||||||
|
* not permitted. */
|
||||||
#define FDT_ERR_BADSTATE 7
|
#define FDT_ERR_BADSTATE 7
|
||||||
/* FDT_ERR_BADSTATE: Function was passed an incomplete device
|
/* FDT_ERR_BADSTATE: Function was passed an incomplete device
|
||||||
* tree created by the sequential-write functions, which is
|
* tree created by the sequential-write functions, which is
|
||||||
@ -116,13 +118,34 @@
|
|||||||
* Should never be returned, if it is, it indicates a bug in
|
* Should never be returned, if it is, it indicates a bug in
|
||||||
* libfdt itself. */
|
* libfdt itself. */
|
||||||
|
|
||||||
#define FDT_ERR_MAX 13
|
/* Errors in device tree content */
|
||||||
|
#define FDT_ERR_BADNCELLS 14
|
||||||
|
/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
|
||||||
|
* or similar property with a bad format or value */
|
||||||
|
|
||||||
|
#define FDT_ERR_BADVALUE 15
|
||||||
|
/* FDT_ERR_BADVALUE: Device tree has a property with an unexpected
|
||||||
|
* value. For example: a property expected to contain a string list
|
||||||
|
* is not NUL-terminated within the length of its value. */
|
||||||
|
|
||||||
|
#define FDT_ERR_BADOVERLAY 16
|
||||||
|
/* FDT_ERR_BADOVERLAY: The device tree overlay, while
|
||||||
|
* correctly structured, cannot be applied due to some
|
||||||
|
* unexpected or missing value, property or node. */
|
||||||
|
|
||||||
|
#define FDT_ERR_NOPHANDLES 17
|
||||||
|
/* FDT_ERR_NOPHANDLES: The device tree doesn't have any
|
||||||
|
* phandle available anymore without causing an overflow */
|
||||||
|
|
||||||
|
#define FDT_ERR_MAX 17
|
||||||
|
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
/* Low-level functions (you probably don't need these) */
|
/* Low-level functions (you probably don't need these) */
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
|
|
||||||
|
#ifndef SWIG /* This function is not useful in Python */
|
||||||
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
|
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
|
||||||
|
#endif
|
||||||
static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
|
static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
|
||||||
{
|
{
|
||||||
return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
|
return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
|
||||||
@ -136,40 +159,89 @@ uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
|
|||||||
|
|
||||||
int fdt_next_node(const void *fdt, int offset, int *depth);
|
int fdt_next_node(const void *fdt, int offset, int *depth);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_first_subnode() - get offset of first direct subnode
|
||||||
|
*
|
||||||
|
* @fdt: FDT blob
|
||||||
|
* @offset: Offset of node to check
|
||||||
|
* @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
|
||||||
|
*/
|
||||||
|
int fdt_first_subnode(const void *fdt, int offset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_next_subnode() - get offset of next direct subnode
|
||||||
|
*
|
||||||
|
* After first calling fdt_first_subnode(), call this function repeatedly to
|
||||||
|
* get direct subnodes of a parent node.
|
||||||
|
*
|
||||||
|
* @fdt: FDT blob
|
||||||
|
* @offset: Offset of previous subnode
|
||||||
|
* @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
|
||||||
|
* subnodes
|
||||||
|
*/
|
||||||
|
int fdt_next_subnode(const void *fdt, int offset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_for_each_subnode - iterate over all subnodes of a parent
|
||||||
|
*
|
||||||
|
* @node: child node (int, lvalue)
|
||||||
|
* @fdt: FDT blob (const void *)
|
||||||
|
* @parent: parent node (int)
|
||||||
|
*
|
||||||
|
* This is actually a wrapper around a for loop and would be used like so:
|
||||||
|
*
|
||||||
|
* fdt_for_each_subnode(node, fdt, parent) {
|
||||||
|
* Use node
|
||||||
|
* ...
|
||||||
|
* }
|
||||||
|
*
|
||||||
|
* if ((node < 0) && (node != -FDT_ERR_NOT_FOUND)) {
|
||||||
|
* Error handling
|
||||||
|
* }
|
||||||
|
*
|
||||||
|
* Note that this is implemented as a macro and @node is used as
|
||||||
|
* iterator in the loop. The parent variable be constant or even a
|
||||||
|
* literal.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#define fdt_for_each_subnode(node, fdt, parent) \
|
||||||
|
for (node = fdt_first_subnode(fdt, parent); \
|
||||||
|
node >= 0; \
|
||||||
|
node = fdt_next_subnode(fdt, node))
|
||||||
|
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
/* General functions */
|
/* General functions */
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
|
|
||||||
#define fdt_get_header(fdt, field) \
|
#define fdt_get_header(fdt, field) \
|
||||||
(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
|
(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
|
||||||
#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
|
#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
|
||||||
#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize))
|
#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize))
|
||||||
#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct))
|
#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct))
|
||||||
#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings))
|
#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings))
|
||||||
#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap))
|
#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap))
|
||||||
#define fdt_version(fdt) (fdt_get_header(fdt, version))
|
#define fdt_version(fdt) (fdt_get_header(fdt, version))
|
||||||
#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
|
#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
|
||||||
#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
|
#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
|
||||||
#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
|
#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
|
||||||
#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct))
|
#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct))
|
||||||
|
|
||||||
#define __fdt_set_hdr(name) \
|
#define fdt_set_hdr_(name) \
|
||||||
static inline void fdt_set_##name(void *fdt, uint32_t val) \
|
static inline void fdt_set_##name(void *fdt, uint32_t val) \
|
||||||
{ \
|
{ \
|
||||||
struct fdt_header *fdth = (struct fdt_header*)fdt; \
|
struct fdt_header *fdth = (struct fdt_header *)fdt; \
|
||||||
fdth->name = cpu_to_fdt32(val); \
|
fdth->name = cpu_to_fdt32(val); \
|
||||||
}
|
}
|
||||||
__fdt_set_hdr(magic);
|
fdt_set_hdr_(magic);
|
||||||
__fdt_set_hdr(totalsize);
|
fdt_set_hdr_(totalsize);
|
||||||
__fdt_set_hdr(off_dt_struct);
|
fdt_set_hdr_(off_dt_struct);
|
||||||
__fdt_set_hdr(off_dt_strings);
|
fdt_set_hdr_(off_dt_strings);
|
||||||
__fdt_set_hdr(off_mem_rsvmap);
|
fdt_set_hdr_(off_mem_rsvmap);
|
||||||
__fdt_set_hdr(version);
|
fdt_set_hdr_(version);
|
||||||
__fdt_set_hdr(last_comp_version);
|
fdt_set_hdr_(last_comp_version);
|
||||||
__fdt_set_hdr(boot_cpuid_phys);
|
fdt_set_hdr_(boot_cpuid_phys);
|
||||||
__fdt_set_hdr(size_dt_strings);
|
fdt_set_hdr_(size_dt_strings);
|
||||||
__fdt_set_hdr(size_dt_struct);
|
fdt_set_hdr_(size_dt_struct);
|
||||||
#undef __fdt_set_hdr
|
#undef fdt_set_hdr_
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_check_header - sanity check a device tree or possible device tree
|
* fdt_check_header - sanity check a device tree or possible device tree
|
||||||
@ -226,6 +298,21 @@ int fdt_move(const void *fdt, void *buf, int bufsize);
|
|||||||
*/
|
*/
|
||||||
const char *fdt_string(const void *fdt, int stroffset);
|
const char *fdt_string(const void *fdt, int stroffset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_get_max_phandle - retrieves the highest phandle in a tree
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
*
|
||||||
|
* fdt_get_max_phandle retrieves the highest phandle in the given
|
||||||
|
* device tree. This will ignore badly formatted phandles, or phandles
|
||||||
|
* with a value of 0 or -1.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* the highest phandle on success
|
||||||
|
* 0, if no phandle was found in the device tree
|
||||||
|
* -1, if an error occurred
|
||||||
|
*/
|
||||||
|
uint32_t fdt_get_max_phandle(const void *fdt);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_num_mem_rsv - retrieve the number of memory reserve map entries
|
* fdt_num_mem_rsv - retrieve the number of memory reserve map entries
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -268,8 +355,10 @@ int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
|
|||||||
* useful for finding subnodes based on a portion of a larger string,
|
* useful for finding subnodes based on a portion of a larger string,
|
||||||
* such as a full path.
|
* such as a full path.
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
|
int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
|
||||||
const char *name, int namelen);
|
const char *name, int namelen);
|
||||||
|
#endif
|
||||||
/**
|
/**
|
||||||
* fdt_subnode_offset - find a subnode of a given node
|
* fdt_subnode_offset - find a subnode of a given node
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -286,8 +375,9 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
|
|||||||
* returns:
|
* returns:
|
||||||
* structure block offset of the requested subnode (>=0), on success
|
* structure block offset of the requested subnode (>=0), on success
|
||||||
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
|
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
|
||||||
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
|
||||||
* -FDT_ERR_BADMAGIC,
|
* tag
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
* -FDT_ERR_BADSTRUCTURE,
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
@ -295,6 +385,19 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
|
|||||||
*/
|
*/
|
||||||
int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
|
int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_path_offset_namelen - find a tree node by its full path
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @path: full path of the node to locate
|
||||||
|
* @namelen: number of characters of path to consider
|
||||||
|
*
|
||||||
|
* Identical to fdt_path_offset(), but only consider the first namelen
|
||||||
|
* characters of path as the path name.
|
||||||
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
|
int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_path_offset - find a tree node by its full path
|
* fdt_path_offset - find a tree node by its full path
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -308,7 +411,8 @@ int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
|
|||||||
* address).
|
* address).
|
||||||
*
|
*
|
||||||
* returns:
|
* returns:
|
||||||
* structure block offset of the node with the requested path (>=0), on success
|
* structure block offset of the node with the requested path (>=0), on
|
||||||
|
* success
|
||||||
* -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
|
* -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
|
||||||
* -FDT_ERR_NOTFOUND, if the requested node does not exist
|
* -FDT_ERR_NOTFOUND, if the requested node does not exist
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
@ -332,10 +436,12 @@ int fdt_path_offset(const void *fdt, const char *path);
|
|||||||
*
|
*
|
||||||
* returns:
|
* returns:
|
||||||
* pointer to the node's name, on success
|
* pointer to the node's name, on success
|
||||||
* If lenp is non-NULL, *lenp contains the length of that name (>=0)
|
* If lenp is non-NULL, *lenp contains the length of that name
|
||||||
|
* (>=0)
|
||||||
* NULL, on error
|
* NULL, on error
|
||||||
* if lenp is non-NULL *lenp contains an error code (<0):
|
* if lenp is non-NULL *lenp contains an error code (<0):
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
|
||||||
|
* tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE, standard meanings
|
* -FDT_ERR_BADSTATE, standard meanings
|
||||||
@ -383,6 +489,33 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset);
|
|||||||
*/
|
*/
|
||||||
int fdt_next_property_offset(const void *fdt, int offset);
|
int fdt_next_property_offset(const void *fdt, int offset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_for_each_property_offset - iterate over all properties of a node
|
||||||
|
*
|
||||||
|
* @property_offset: property offset (int, lvalue)
|
||||||
|
* @fdt: FDT blob (const void *)
|
||||||
|
* @node: node offset (int)
|
||||||
|
*
|
||||||
|
* This is actually a wrapper around a for loop and would be used like so:
|
||||||
|
*
|
||||||
|
* fdt_for_each_property_offset(property, fdt, node) {
|
||||||
|
* Use property
|
||||||
|
* ...
|
||||||
|
* }
|
||||||
|
*
|
||||||
|
* if ((property < 0) && (property != -FDT_ERR_NOT_FOUND)) {
|
||||||
|
* Error handling
|
||||||
|
* }
|
||||||
|
*
|
||||||
|
* Note that this is implemented as a macro and property is used as
|
||||||
|
* iterator in the loop. The node variable can be constant or even a
|
||||||
|
* literal.
|
||||||
|
*/
|
||||||
|
#define fdt_for_each_property_offset(property, fdt, node) \
|
||||||
|
for (property = fdt_first_property_offset(fdt, node); \
|
||||||
|
property >= 0; \
|
||||||
|
property = fdt_next_property_offset(fdt, property))
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_get_property_by_offset - retrieve the property at a given offset
|
* fdt_get_property_by_offset - retrieve the property at a given offset
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -419,13 +552,15 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
|
|||||||
* @namelen: number of characters of name to consider
|
* @namelen: number of characters of name to consider
|
||||||
* @lenp: pointer to an integer variable (will be overwritten) or NULL
|
* @lenp: pointer to an integer variable (will be overwritten) or NULL
|
||||||
*
|
*
|
||||||
* Identical to fdt_get_property_namelen(), but only examine the first
|
* Identical to fdt_get_property(), but only examine the first namelen
|
||||||
* namelen characters of name for matching the property name.
|
* characters of name for matching the property name.
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
const struct fdt_property *fdt_get_property_namelen(const void *fdt,
|
const struct fdt_property *fdt_get_property_namelen(const void *fdt,
|
||||||
int nodeoffset,
|
int nodeoffset,
|
||||||
const char *name,
|
const char *name,
|
||||||
int namelen, int *lenp);
|
int namelen, int *lenp);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_get_property - find a given property in a given node
|
* fdt_get_property - find a given property in a given node
|
||||||
@ -447,7 +582,8 @@ const struct fdt_property *fdt_get_property_namelen(const void *fdt,
|
|||||||
* NULL, on error
|
* NULL, on error
|
||||||
* if lenp is non-NULL, *lenp contains an error code (<0):
|
* if lenp is non-NULL, *lenp contains an error code (<0):
|
||||||
* -FDT_ERR_NOTFOUND, node does not have named property
|
* -FDT_ERR_NOTFOUND, node does not have named property
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
|
||||||
|
* tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -495,8 +631,10 @@ static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
|
|||||||
* -FDT_ERR_BADSTRUCTURE,
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
* -FDT_ERR_TRUNCATED, standard meanings
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* This function is not useful in Python */
|
||||||
const void *fdt_getprop_by_offset(const void *fdt, int offset,
|
const void *fdt_getprop_by_offset(const void *fdt, int offset,
|
||||||
const char **namep, int *lenp);
|
const char **namep, int *lenp);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_getprop_namelen - get property value based on substring
|
* fdt_getprop_namelen - get property value based on substring
|
||||||
@ -509,8 +647,17 @@ const void *fdt_getprop_by_offset(const void *fdt, int offset,
|
|||||||
* Identical to fdt_getprop(), but only examine the first namelen
|
* Identical to fdt_getprop(), but only examine the first namelen
|
||||||
* characters of name for matching the property name.
|
* characters of name for matching the property name.
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
|
const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
|
||||||
const char *name, int namelen, int *lenp);
|
const char *name, int namelen, int *lenp);
|
||||||
|
static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
|
||||||
|
const char *name, int namelen,
|
||||||
|
int *lenp)
|
||||||
|
{
|
||||||
|
return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
|
||||||
|
namelen, lenp);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_getprop - retrieve the value of a given property
|
* fdt_getprop - retrieve the value of a given property
|
||||||
@ -532,7 +679,8 @@ const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
|
|||||||
* NULL, on error
|
* NULL, on error
|
||||||
* if lenp is non-NULL, *lenp contains an error code (<0):
|
* if lenp is non-NULL, *lenp contains an error code (<0):
|
||||||
* -FDT_ERR_NOTFOUND, node does not have named property
|
* -FDT_ERR_NOTFOUND, node does not have named property
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
|
||||||
|
* tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -570,11 +718,13 @@ uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
|
|||||||
* Identical to fdt_get_alias(), but only examine the first namelen
|
* Identical to fdt_get_alias(), but only examine the first namelen
|
||||||
* characters of name for matching the alias name.
|
* characters of name for matching the alias name.
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
const char *fdt_get_alias_namelen(const void *fdt,
|
const char *fdt_get_alias_namelen(const void *fdt,
|
||||||
const char *name, int namelen);
|
const char *name, int namelen);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_get_alias - retreive the path referenced by a given alias
|
* fdt_get_alias - retrieve the path referenced by a given alias
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
* @name: name of the alias th look up
|
* @name: name of the alias th look up
|
||||||
*
|
*
|
||||||
@ -582,7 +732,7 @@ const char *fdt_get_alias_namelen(const void *fdt,
|
|||||||
* value of the property named 'name' in the node /aliases.
|
* value of the property named 'name' in the node /aliases.
|
||||||
*
|
*
|
||||||
* returns:
|
* returns:
|
||||||
* a pointer to the expansion of the alias named 'name', of it exists
|
* a pointer to the expansion of the alias named 'name', if it exists
|
||||||
* NULL, if the given alias or the /aliases node does not exist
|
* NULL, if the given alias or the /aliases node does not exist
|
||||||
*/
|
*/
|
||||||
const char *fdt_get_alias(const void *fdt, const char *name);
|
const char *fdt_get_alias(const void *fdt, const char *name);
|
||||||
@ -604,7 +754,7 @@ const char *fdt_get_alias(const void *fdt, const char *name);
|
|||||||
* 0, on success
|
* 0, on success
|
||||||
* buf contains the absolute path of the node at
|
* buf contains the absolute path of the node at
|
||||||
* nodeoffset, as a NUL-terminated string.
|
* nodeoffset, as a NUL-terminated string.
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
|
* -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
|
||||||
* characters and will not fit in the given buffer.
|
* characters and will not fit in the given buffer.
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
@ -634,11 +784,11 @@ int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
|
|||||||
* structure from the start to nodeoffset.
|
* structure from the start to nodeoffset.
|
||||||
*
|
*
|
||||||
* returns:
|
* returns:
|
||||||
|
|
||||||
* structure block offset of the node at node offset's ancestor
|
* structure block offset of the node at node offset's ancestor
|
||||||
* of depth supernodedepth (>=0), on success
|
* of depth supernodedepth (>=0), on success
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of nodeoffset
|
* -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of
|
||||||
|
* nodeoffset
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -660,7 +810,7 @@ int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
|
|||||||
*
|
*
|
||||||
* returns:
|
* returns:
|
||||||
* depth of the node at nodeoffset (>=0), on success
|
* depth of the node at nodeoffset (>=0), on success
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -683,7 +833,7 @@ int fdt_node_depth(const void *fdt, int nodeoffset);
|
|||||||
* returns:
|
* returns:
|
||||||
* structure block offset of the parent of the node at nodeoffset
|
* structure block offset of the parent of the node at nodeoffset
|
||||||
* (>=0), on success
|
* (>=0), on success
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -723,7 +873,7 @@ int fdt_parent_offset(const void *fdt, int nodeoffset);
|
|||||||
* on success
|
* on success
|
||||||
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
|
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
|
||||||
* tree after startoffset
|
* tree after startoffset
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -770,7 +920,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
|
|||||||
* 1, if the node has a 'compatible' property, but it does not list
|
* 1, if the node has a 'compatible' property, but it does not list
|
||||||
* the given string
|
* the given string
|
||||||
* -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
|
* -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
|
||||||
* -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -807,7 +957,7 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
|
|||||||
* on success
|
* on success
|
||||||
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
|
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
|
||||||
* tree after startoffset
|
* tree after startoffset
|
||||||
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
|
||||||
* -FDT_ERR_BADMAGIC,
|
* -FDT_ERR_BADMAGIC,
|
||||||
* -FDT_ERR_BADVERSION,
|
* -FDT_ERR_BADVERSION,
|
||||||
* -FDT_ERR_BADSTATE,
|
* -FDT_ERR_BADSTATE,
|
||||||
@ -816,10 +966,166 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
|
|||||||
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
|
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
|
||||||
const char *compatible);
|
const char *compatible);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_stringlist_contains - check a string list property for a string
|
||||||
|
* @strlist: Property containing a list of strings to check
|
||||||
|
* @listlen: Length of property
|
||||||
|
* @str: String to search for
|
||||||
|
*
|
||||||
|
* This is a utility function provided for convenience. The list contains
|
||||||
|
* one or more strings, each terminated by \0, as is found in a device tree
|
||||||
|
* "compatible" property.
|
||||||
|
*
|
||||||
|
* @return: 1 if the string is found in the list, 0 not found, or invalid list
|
||||||
|
*/
|
||||||
|
int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_stringlist_count - count the number of strings in a string list
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of a tree node
|
||||||
|
* @property: name of the property containing the string list
|
||||||
|
* @return:
|
||||||
|
* the number of strings in the given property
|
||||||
|
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
|
||||||
|
* -FDT_ERR_NOTFOUND if the property does not exist
|
||||||
|
*/
|
||||||
|
int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_stringlist_search - find a string in a string list and return its index
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of a tree node
|
||||||
|
* @property: name of the property containing the string list
|
||||||
|
* @string: string to look up in the string list
|
||||||
|
*
|
||||||
|
* Note that it is possible for this function to succeed on property values
|
||||||
|
* that are not NUL-terminated. That's because the function will stop after
|
||||||
|
* finding the first occurrence of @string. This can for example happen with
|
||||||
|
* small-valued cell properties, such as #address-cells, when searching for
|
||||||
|
* the empty string.
|
||||||
|
*
|
||||||
|
* @return:
|
||||||
|
* the index of the string in the list of strings
|
||||||
|
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
|
||||||
|
* -FDT_ERR_NOTFOUND if the property does not exist or does not contain
|
||||||
|
* the given string
|
||||||
|
*/
|
||||||
|
int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
|
||||||
|
const char *string);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_stringlist_get() - obtain the string at a given index in a string list
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of a tree node
|
||||||
|
* @property: name of the property containing the string list
|
||||||
|
* @index: index of the string to return
|
||||||
|
* @lenp: return location for the string length or an error code on failure
|
||||||
|
*
|
||||||
|
* Note that this will successfully extract strings from properties with
|
||||||
|
* non-NUL-terminated values. For example on small-valued cell properties
|
||||||
|
* this function will return the empty string.
|
||||||
|
*
|
||||||
|
* If non-NULL, the length of the string (on success) or a negative error-code
|
||||||
|
* (on failure) will be stored in the integer pointer to by lenp.
|
||||||
|
*
|
||||||
|
* @return:
|
||||||
|
* A pointer to the string at the given index in the string list or NULL on
|
||||||
|
* failure. On success the length of the string will be stored in the memory
|
||||||
|
* location pointed to by the lenp parameter, if non-NULL. On failure one of
|
||||||
|
* the following negative error codes will be returned in the lenp parameter
|
||||||
|
* (if non-NULL):
|
||||||
|
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
|
||||||
|
* -FDT_ERR_NOTFOUND if the property does not exist
|
||||||
|
*/
|
||||||
|
const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
|
||||||
|
const char *property, int index,
|
||||||
|
int *lenp);
|
||||||
|
|
||||||
|
/**********************************************************************/
|
||||||
|
/* Read-only functions (addressing related) */
|
||||||
|
/**********************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells
|
||||||
|
*
|
||||||
|
* This is the maximum value for #address-cells, #size-cells and
|
||||||
|
* similar properties that will be processed by libfdt. IEE1275
|
||||||
|
* requires that OF implementations handle values up to 4.
|
||||||
|
* Implementations may support larger values, but in practice higher
|
||||||
|
* values aren't used.
|
||||||
|
*/
|
||||||
|
#define FDT_MAX_NCELLS 4
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_address_cells - retrieve address size for a bus represented in the tree
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of the node to find the address size for
|
||||||
|
*
|
||||||
|
* When the node has a valid #address-cells property, returns its value.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 <= n < FDT_MAX_NCELLS, on success
|
||||||
|
* 2, if the node has no #address-cells property
|
||||||
|
* -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
|
||||||
|
* #address-cells property
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_BADVERSION,
|
||||||
|
* -FDT_ERR_BADSTATE,
|
||||||
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
|
*/
|
||||||
|
int fdt_address_cells(const void *fdt, int nodeoffset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_size_cells - retrieve address range size for a bus represented in the
|
||||||
|
* tree
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of the node to find the address range size for
|
||||||
|
*
|
||||||
|
* When the node has a valid #size-cells property, returns its value.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0 <= n < FDT_MAX_NCELLS, on success
|
||||||
|
* 2, if the node has no #address-cells property
|
||||||
|
* -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
|
||||||
|
* #size-cells property
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_BADVERSION,
|
||||||
|
* -FDT_ERR_BADSTATE,
|
||||||
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
|
*/
|
||||||
|
int fdt_size_cells(const void *fdt, int nodeoffset);
|
||||||
|
|
||||||
|
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
/* Write-in-place functions */
|
/* Write-in-place functions */
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_setprop_inplace_namelen_partial - change a property's value,
|
||||||
|
* but not its size
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of the node whose property to change
|
||||||
|
* @name: name of the property to change
|
||||||
|
* @namelen: number of characters of name to consider
|
||||||
|
* @idx: index of the property to change in the array
|
||||||
|
* @val: pointer to data to replace the property value with
|
||||||
|
* @len: length of the property value
|
||||||
|
*
|
||||||
|
* Identical to fdt_setprop_inplace(), but modifies the given property
|
||||||
|
* starting from the given index, and using only the first characters
|
||||||
|
* of the name. It is useful when you want to manipulate only one value of
|
||||||
|
* an array and you have a string that doesn't end with \0.
|
||||||
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
|
int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
|
||||||
|
const char *name, int namelen,
|
||||||
|
uint32_t idx, const void *val,
|
||||||
|
int len);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_setprop_inplace - change a property's value, but not its size
|
* fdt_setprop_inplace - change a property's value, but not its size
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -848,8 +1154,10 @@ int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
|
|||||||
* -FDT_ERR_BADSTRUCTURE,
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
* -FDT_ERR_TRUNCATED, standard meanings
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
|
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
|
||||||
const void *val, int len);
|
const void *val, int len);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
|
* fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
|
||||||
@ -882,8 +1190,8 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
|
|||||||
static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
|
static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
|
||||||
const char *name, uint32_t val)
|
const char *name, uint32_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt32(val);
|
fdt32_t tmp = cpu_to_fdt32(val);
|
||||||
return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -917,8 +1225,8 @@ static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
|
|||||||
static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
|
static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
|
||||||
const char *name, uint64_t val)
|
const char *name, uint64_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt64(val);
|
fdt64_t tmp = cpu_to_fdt64(val);
|
||||||
return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -987,24 +1295,41 @@ int fdt_nop_node(void *fdt, int nodeoffset);
|
|||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
|
|
||||||
int fdt_create(void *buf, int bufsize);
|
int fdt_create(void *buf, int bufsize);
|
||||||
|
int fdt_resize(void *fdt, void *buf, int bufsize);
|
||||||
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
|
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
|
||||||
int fdt_finish_reservemap(void *fdt);
|
int fdt_finish_reservemap(void *fdt);
|
||||||
int fdt_begin_node(void *fdt, const char *name);
|
int fdt_begin_node(void *fdt, const char *name);
|
||||||
int fdt_property(void *fdt, const char *name, const void *val, int len);
|
int fdt_property(void *fdt, const char *name, const void *val, int len);
|
||||||
static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
|
static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt32(val);
|
fdt32_t tmp = cpu_to_fdt32(val);
|
||||||
return fdt_property(fdt, name, &val, sizeof(val));
|
return fdt_property(fdt, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
|
static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt64(val);
|
fdt64_t tmp = cpu_to_fdt64(val);
|
||||||
return fdt_property(fdt, name, &val, sizeof(val));
|
return fdt_property(fdt, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
|
static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
|
||||||
{
|
{
|
||||||
return fdt_property_u32(fdt, name, val);
|
return fdt_property_u32(fdt, name, val);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_property_placeholder - add a new property and return a ptr to its value
|
||||||
|
*
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @name: name of property to add
|
||||||
|
* @len: length of property value in bytes
|
||||||
|
* @valp: returns a pointer to where where the value should be placed
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0, on success
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_NOSPACE, standard meanings
|
||||||
|
*/
|
||||||
|
int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp);
|
||||||
|
|
||||||
#define fdt_property_string(fdt, name, str) \
|
#define fdt_property_string(fdt, name, str) \
|
||||||
fdt_property(fdt, name, str, strlen(str)+1)
|
fdt_property(fdt, name, str, strlen(str)+1)
|
||||||
int fdt_end_node(void *fdt);
|
int fdt_end_node(void *fdt);
|
||||||
@ -1123,6 +1448,37 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name);
|
|||||||
int fdt_setprop(void *fdt, int nodeoffset, const char *name,
|
int fdt_setprop(void *fdt, int nodeoffset, const char *name,
|
||||||
const void *val, int len);
|
const void *val, int len);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_setprop_placeholder - allocate space for a property
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of the node whose property to change
|
||||||
|
* @name: name of the property to change
|
||||||
|
* @len: length of the property value
|
||||||
|
* @prop_data: return pointer to property data
|
||||||
|
*
|
||||||
|
* fdt_setprop_placeholer() allocates the named property in the given node.
|
||||||
|
* If the property exists it is resized. In either case a pointer to the
|
||||||
|
* property data is returned.
|
||||||
|
*
|
||||||
|
* This function may insert or delete data from the blob, and will
|
||||||
|
* therefore change the offsets of some existing nodes.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0, on success
|
||||||
|
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
|
||||||
|
* contain the new property value
|
||||||
|
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
|
||||||
|
* -FDT_ERR_BADLAYOUT,
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_BADVERSION,
|
||||||
|
* -FDT_ERR_BADSTATE,
|
||||||
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
|
* -FDT_ERR_BADLAYOUT,
|
||||||
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
|
*/
|
||||||
|
int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
|
||||||
|
int len, void **prop_data);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_setprop_u32 - set a property to a 32-bit integer
|
* fdt_setprop_u32 - set a property to a 32-bit integer
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -1154,8 +1510,8 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
|
|||||||
static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
|
static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
|
||||||
uint32_t val)
|
uint32_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt32(val);
|
fdt32_t tmp = cpu_to_fdt32(val);
|
||||||
return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -1189,8 +1545,8 @@ static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
|
|||||||
static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
|
static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
|
||||||
uint64_t val)
|
uint64_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt64(val);
|
fdt64_t tmp = cpu_to_fdt64(val);
|
||||||
return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -1235,6 +1591,36 @@ static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
|
|||||||
#define fdt_setprop_string(fdt, nodeoffset, name, str) \
|
#define fdt_setprop_string(fdt, nodeoffset, name, str) \
|
||||||
fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
|
fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_setprop_empty - set a property to an empty value
|
||||||
|
* @fdt: pointer to the device tree blob
|
||||||
|
* @nodeoffset: offset of the node whose property to change
|
||||||
|
* @name: name of the property to change
|
||||||
|
*
|
||||||
|
* fdt_setprop_empty() sets the value of the named property in the
|
||||||
|
* given node to an empty (zero length) value, or creates a new empty
|
||||||
|
* property if it does not already exist.
|
||||||
|
*
|
||||||
|
* This function may insert or delete data from the blob, and will
|
||||||
|
* therefore change the offsets of some existing nodes.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0, on success
|
||||||
|
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
|
||||||
|
* contain the new property value
|
||||||
|
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
|
||||||
|
* -FDT_ERR_BADLAYOUT,
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_BADVERSION,
|
||||||
|
* -FDT_ERR_BADSTATE,
|
||||||
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
|
* -FDT_ERR_BADLAYOUT,
|
||||||
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
|
*/
|
||||||
|
#define fdt_setprop_empty(fdt, nodeoffset, name) \
|
||||||
|
fdt_setprop((fdt), (nodeoffset), (name), NULL, 0)
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_appendprop - append to or create a property
|
* fdt_appendprop - append to or create a property
|
||||||
* @fdt: pointer to the device tree blob
|
* @fdt: pointer to the device tree blob
|
||||||
@ -1296,8 +1682,8 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
|
|||||||
static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
|
static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
|
||||||
const char *name, uint32_t val)
|
const char *name, uint32_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt32(val);
|
fdt32_t tmp = cpu_to_fdt32(val);
|
||||||
return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -1331,8 +1717,8 @@ static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
|
|||||||
static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
|
static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
|
||||||
const char *name, uint64_t val)
|
const char *name, uint64_t val)
|
||||||
{
|
{
|
||||||
val = cpu_to_fdt64(val);
|
fdt64_t tmp = cpu_to_fdt64(val);
|
||||||
return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
|
return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -1412,8 +1798,10 @@ int fdt_delprop(void *fdt, int nodeoffset, const char *name);
|
|||||||
* creating subnodes based on a portion of a larger string, such as a
|
* creating subnodes based on a portion of a larger string, such as a
|
||||||
* full path.
|
* full path.
|
||||||
*/
|
*/
|
||||||
|
#ifndef SWIG /* Not available in Python */
|
||||||
int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
||||||
const char *name, int namelen);
|
const char *name, int namelen);
|
||||||
|
#endif
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* fdt_add_subnode - creates a new node
|
* fdt_add_subnode - creates a new node
|
||||||
@ -1429,9 +1817,11 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
|
|||||||
* change the offsets of some existing nodes.
|
* change the offsets of some existing nodes.
|
||||||
|
|
||||||
* returns:
|
* returns:
|
||||||
* structure block offset of the created nodeequested subnode (>=0), on success
|
* structure block offset of the created nodeequested subnode (>=0), on
|
||||||
|
* success
|
||||||
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
|
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
|
||||||
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
|
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
|
||||||
|
* tag
|
||||||
* -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
|
* -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
|
||||||
* the given name
|
* the given name
|
||||||
* -FDT_ERR_NOSPACE, if there is insufficient free space in the
|
* -FDT_ERR_NOSPACE, if there is insufficient free space in the
|
||||||
@ -1469,10 +1859,41 @@ int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
|
|||||||
*/
|
*/
|
||||||
int fdt_del_node(void *fdt, int nodeoffset);
|
int fdt_del_node(void *fdt, int nodeoffset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* fdt_overlay_apply - Applies a DT overlay on a base DT
|
||||||
|
* @fdt: pointer to the base device tree blob
|
||||||
|
* @fdto: pointer to the device tree overlay blob
|
||||||
|
*
|
||||||
|
* fdt_overlay_apply() will apply the given device tree overlay on the
|
||||||
|
* given base device tree.
|
||||||
|
*
|
||||||
|
* Expect the base device tree to be modified, even if the function
|
||||||
|
* returns an error.
|
||||||
|
*
|
||||||
|
* returns:
|
||||||
|
* 0, on success
|
||||||
|
* -FDT_ERR_NOSPACE, there's not enough space in the base device tree
|
||||||
|
* -FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or
|
||||||
|
* properties in the base DT
|
||||||
|
* -FDT_ERR_BADPHANDLE,
|
||||||
|
* -FDT_ERR_BADOVERLAY,
|
||||||
|
* -FDT_ERR_NOPHANDLES,
|
||||||
|
* -FDT_ERR_INTERNAL,
|
||||||
|
* -FDT_ERR_BADLAYOUT,
|
||||||
|
* -FDT_ERR_BADMAGIC,
|
||||||
|
* -FDT_ERR_BADOFFSET,
|
||||||
|
* -FDT_ERR_BADPATH,
|
||||||
|
* -FDT_ERR_BADVERSION,
|
||||||
|
* -FDT_ERR_BADSTRUCTURE,
|
||||||
|
* -FDT_ERR_BADSTATE,
|
||||||
|
* -FDT_ERR_TRUNCATED, standard meanings
|
||||||
|
*/
|
||||||
|
int fdt_overlay_apply(void *fdt, void *fdto);
|
||||||
|
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
/* Debugging / informational functions */
|
/* Debugging / informational functions */
|
||||||
/**********************************************************************/
|
/**********************************************************************/
|
||||||
|
|
||||||
const char *fdt_strerror(int errval);
|
const char *fdt_strerror(int errval);
|
||||||
|
|
||||||
#endif /* _LIBFDT_H */
|
#endif /* LIBFDT_H */
|
||||||
|
@ -1,5 +1,56 @@
|
|||||||
#ifndef _LIBFDT_ENV_H
|
#ifndef LIBFDT_ENV_H
|
||||||
#define _LIBFDT_ENV_H
|
#define LIBFDT_ENV_H
|
||||||
|
/*
|
||||||
|
* libfdt - Flat Device Tree manipulation
|
||||||
|
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
||||||
|
* Copyright 2012 Kim Phillips, Freescale Semiconductor.
|
||||||
|
*
|
||||||
|
* libfdt is dual licensed: you can use it either under the terms of
|
||||||
|
* the GPL, or the BSD license, at your option.
|
||||||
|
*
|
||||||
|
* a) This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License as
|
||||||
|
* published by the Free Software Foundation; either version 2 of the
|
||||||
|
* License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public
|
||||||
|
* License along with this library; if not, write to the Free
|
||||||
|
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
|
||||||
|
* MA 02110-1301 USA
|
||||||
|
*
|
||||||
|
* Alternatively,
|
||||||
|
*
|
||||||
|
* b) Redistribution and use in source and binary forms, with or
|
||||||
|
* without modification, are permitted provided that the following
|
||||||
|
* conditions are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above
|
||||||
|
* copyright notice, this list of conditions and the following
|
||||||
|
* disclaimer in the documentation and/or other materials
|
||||||
|
* provided with the distribution.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||||
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||||
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||||||
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||||
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||||
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||||
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
||||||
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
|
||||||
#ifdef _KERNEL
|
#ifdef _KERNEL
|
||||||
#include <sys/cdefs.h>
|
#include <sys/cdefs.h>
|
||||||
@ -10,28 +61,87 @@
|
|||||||
#else
|
#else
|
||||||
#include <stddef.h>
|
#include <stddef.h>
|
||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
|
#include <stdlib.h>
|
||||||
#include <string.h>
|
#include <string.h>
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#define EXTRACT_BYTE(n) ((unsigned long long)((uint8_t *)&x)[n])
|
#ifdef __CHECKER__
|
||||||
static inline uint16_t fdt16_to_cpu(uint16_t x)
|
#define FDT_FORCE __attribute__((force))
|
||||||
{
|
#define FDT_BITWISE __attribute__((bitwise))
|
||||||
return (EXTRACT_BYTE(0) << 8) | EXTRACT_BYTE(1);
|
#else
|
||||||
}
|
#define FDT_FORCE
|
||||||
#define cpu_to_fdt16(x) fdt16_to_cpu(x)
|
#define FDT_BITWISE
|
||||||
|
#endif
|
||||||
|
|
||||||
static inline uint32_t fdt32_to_cpu(uint32_t x)
|
typedef uint16_t FDT_BITWISE fdt16_t;
|
||||||
{
|
typedef uint32_t FDT_BITWISE fdt32_t;
|
||||||
return (EXTRACT_BYTE(0) << 24) | (EXTRACT_BYTE(1) << 16) | (EXTRACT_BYTE(2) << 8) | EXTRACT_BYTE(3);
|
typedef uint64_t FDT_BITWISE fdt64_t;
|
||||||
}
|
|
||||||
#define cpu_to_fdt32(x) fdt32_to_cpu(x)
|
|
||||||
|
|
||||||
static inline uint64_t fdt64_to_cpu(uint64_t x)
|
#define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n])
|
||||||
|
#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
|
||||||
|
#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
|
||||||
|
(EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
|
||||||
|
#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
|
||||||
|
(EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
|
||||||
|
(EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
|
||||||
|
(EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
|
||||||
|
|
||||||
|
static inline uint16_t fdt16_to_cpu(fdt16_t x)
|
||||||
{
|
{
|
||||||
return (EXTRACT_BYTE(0) << 56) | (EXTRACT_BYTE(1) << 48) | (EXTRACT_BYTE(2) << 40) | (EXTRACT_BYTE(3) << 32)
|
return (FDT_FORCE uint16_t)CPU_TO_FDT16(x);
|
||||||
| (EXTRACT_BYTE(4) << 24) | (EXTRACT_BYTE(5) << 16) | (EXTRACT_BYTE(6) << 8) | EXTRACT_BYTE(7);
|
|
||||||
}
|
}
|
||||||
#define cpu_to_fdt64(x) fdt64_to_cpu(x)
|
static inline fdt16_t cpu_to_fdt16(uint16_t x)
|
||||||
|
{
|
||||||
|
return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline uint32_t fdt32_to_cpu(fdt32_t x)
|
||||||
|
{
|
||||||
|
return (FDT_FORCE uint32_t)CPU_TO_FDT32(x);
|
||||||
|
}
|
||||||
|
static inline fdt32_t cpu_to_fdt32(uint32_t x)
|
||||||
|
{
|
||||||
|
return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline uint64_t fdt64_to_cpu(fdt64_t x)
|
||||||
|
{
|
||||||
|
return (FDT_FORCE uint64_t)CPU_TO_FDT64(x);
|
||||||
|
}
|
||||||
|
static inline fdt64_t cpu_to_fdt64(uint64_t x)
|
||||||
|
{
|
||||||
|
return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x);
|
||||||
|
}
|
||||||
|
#undef CPU_TO_FDT64
|
||||||
|
#undef CPU_TO_FDT32
|
||||||
|
#undef CPU_TO_FDT16
|
||||||
#undef EXTRACT_BYTE
|
#undef EXTRACT_BYTE
|
||||||
|
|
||||||
#endif /* _LIBFDT_ENV_H */
|
#ifdef __APPLE__
|
||||||
|
#include <AvailabilityMacros.h>
|
||||||
|
|
||||||
|
/* strnlen() is not available on Mac OS < 10.7 */
|
||||||
|
# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \
|
||||||
|
MAC_OS_X_VERSION_10_7)
|
||||||
|
|
||||||
|
#define strnlen fdt_strnlen
|
||||||
|
|
||||||
|
/*
|
||||||
|
* fdt_strnlen: returns the length of a string or max_count - which ever is
|
||||||
|
* smallest.
|
||||||
|
* Input 1 string: the string whose size is to be determined
|
||||||
|
* Input 2 max_count: the maximum value returned by this function
|
||||||
|
* Output: length of the string or max_count (the smallest of the two)
|
||||||
|
*/
|
||||||
|
static inline size_t fdt_strnlen(const char *string, size_t max_count)
|
||||||
|
{
|
||||||
|
const char *p = memchr(string, 0, max_count);
|
||||||
|
return p ? p - string : max_count;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED <
|
||||||
|
MAC_OS_X_VERSION_10_7) */
|
||||||
|
|
||||||
|
#endif /* __APPLE__ */
|
||||||
|
|
||||||
|
#endif /* LIBFDT_ENV_H */
|
||||||
|
@ -1,5 +1,5 @@
|
|||||||
#ifndef _LIBFDT_INTERNAL_H
|
#ifndef LIBFDT_INTERNAL_H
|
||||||
#define _LIBFDT_INTERNAL_H
|
#define LIBFDT_INTERNAL_H
|
||||||
/*
|
/*
|
||||||
* libfdt - Flat Device Tree manipulation
|
* libfdt - Flat Device Tree manipulation
|
||||||
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
* Copyright (C) 2006 David Gibson, IBM Corporation.
|
||||||
@ -57,27 +57,27 @@
|
|||||||
|
|
||||||
#define FDT_CHECK_HEADER(fdt) \
|
#define FDT_CHECK_HEADER(fdt) \
|
||||||
{ \
|
{ \
|
||||||
int err; \
|
int err_; \
|
||||||
if ((err = fdt_check_header(fdt)) != 0) \
|
if ((err_ = fdt_check_header(fdt)) != 0) \
|
||||||
return err; \
|
return err_; \
|
||||||
}
|
}
|
||||||
|
|
||||||
int _fdt_check_node_offset(const void *fdt, int offset);
|
int fdt_check_node_offset_(const void *fdt, int offset);
|
||||||
int _fdt_check_prop_offset(const void *fdt, int offset);
|
int fdt_check_prop_offset_(const void *fdt, int offset);
|
||||||
const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
|
const char *fdt_find_string_(const char *strtab, int tabsize, const char *s);
|
||||||
int _fdt_node_end_offset(void *fdt, int nodeoffset);
|
int fdt_node_end_offset_(void *fdt, int nodeoffset);
|
||||||
|
|
||||||
static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
|
static inline const void *fdt_offset_ptr_(const void *fdt, int offset)
|
||||||
{
|
{
|
||||||
return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
|
return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
|
||||||
}
|
}
|
||||||
|
|
||||||
static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
|
static inline void *fdt_offset_ptr_w_(void *fdt, int offset)
|
||||||
{
|
{
|
||||||
return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
|
return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
|
static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n)
|
||||||
{
|
{
|
||||||
const struct fdt_reserve_entry *rsv_table =
|
const struct fdt_reserve_entry *rsv_table =
|
||||||
(const struct fdt_reserve_entry *)
|
(const struct fdt_reserve_entry *)
|
||||||
@ -85,11 +85,11 @@ static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int
|
|||||||
|
|
||||||
return rsv_table + n;
|
return rsv_table + n;
|
||||||
}
|
}
|
||||||
static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
|
static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
|
||||||
{
|
{
|
||||||
return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
|
return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n);
|
||||||
}
|
}
|
||||||
|
|
||||||
#define FDT_SW_MAGIC (~FDT_MAGIC)
|
#define FDT_SW_MAGIC (~FDT_MAGIC)
|
||||||
|
|
||||||
#endif /* _LIBFDT_INTERNAL_H */
|
#endif /* LIBFDT_INTERNAL_H */
|
||||||
|
Loading…
Reference in New Issue
Block a user