cc9f1b4c35
The fixups needed vary somewhat by architecture, so move the FDT fixup to be per-arch. Rename the fdt_linux_fixup() routine to be fdt_arch_fixup() and expect all architecutres to fix things up as needed. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D36604
124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/*-
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* Copyright (C) 2014 Nathan Whitehorn
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF 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 <sys/types.h>
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#include <fdt_platform.h>
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#include <libfdt.h>
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#include "bootstrap.h"
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#include "host_syscall.h"
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#include "kboot.h"
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static void
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add_node_to_fdt(void *buffer, const char *path, int fdt_offset)
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{
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int child_offset, fd, pfd, error, dentsize;
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char subpath[512];
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void *propbuf;
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ssize_t proplen;
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char dents[2048];
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struct host_dirent64 *dent;
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int d_type;
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fd = host_open(path, O_RDONLY, 0);
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while (1) {
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dentsize = host_getdents64(fd, dents, sizeof(dents));
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if (dentsize <= 0)
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break;
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for (dent = (struct host_dirent64 *)dents;
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(char *)dent < dents + dentsize;
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dent = (struct host_dirent64 *)((void *)dent + dent->d_reclen)) {
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sprintf(subpath, "%s/%s", path, dent->d_name);
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if (strcmp(dent->d_name, ".") == 0 ||
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strcmp(dent->d_name, "..") == 0)
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continue;
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d_type = dent->d_type;
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if (d_type == 4 /* DT_DIR */) {
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child_offset = fdt_add_subnode(buffer, fdt_offset,
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dent->d_name);
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if (child_offset < 0) {
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printf("Error %d adding node %s/%s, skipping\n",
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child_offset, path, dent->d_name);
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continue;
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}
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add_node_to_fdt(buffer, subpath, child_offset);
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} else {
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propbuf = malloc(1024);
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proplen = 0;
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pfd = host_open(subpath, O_RDONLY, 0);
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if (pfd > 0) {
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proplen = host_read(pfd, propbuf, 1024);
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host_close(pfd);
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}
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error = fdt_setprop(buffer, fdt_offset, dent->d_name,
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propbuf, proplen);
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free(propbuf);
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if (error)
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printf("Error %d adding property %s to "
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"node %d\n", error, dent->d_name,
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fdt_offset);
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}
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}
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}
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host_close(fd);
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}
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int
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fdt_platform_load_dtb(void)
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{
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void *buffer;
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size_t buflen = 409600;
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buffer = malloc(buflen);
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fdt_create_empty_tree(buffer, buflen);
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add_node_to_fdt(buffer, "/proc/device-tree",
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fdt_path_offset(buffer, "/"));
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fdt_arch_fixups(buffer);
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fdt_pack(buffer);
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fdt_load_dtb_addr(buffer);
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free(buffer);
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return (0);
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}
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void
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fdt_platform_load_overlays(void)
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{
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}
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void
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fdt_platform_fixups(void)
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{
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}
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