1728 lines
36 KiB
C
1728 lines
36 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under sponsorship from
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* the FreeBSD Foundation.
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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 <fdt.h>
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#include <libfdt.h>
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <machine/elf.h>
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#include "bootstrap.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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#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
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printf(fmt,##args); } while (0)
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#else
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#define debugf(fmt, args...)
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#endif
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#define FDT_CWD_LEN 256
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#define FDT_MAX_DEPTH 12
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#define FDT_PROP_SEP " = "
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#define COPYOUT(s,d,l) archsw.arch_copyout(s, d, l)
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#define COPYIN(s,d,l) archsw.arch_copyin(s, d, l)
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#define FDT_STATIC_DTB_SYMBOL "fdt_static_dtb"
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#define CMD_REQUIRES_BLOB 0x01
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/* Location of FDT yet to be loaded. */
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/* This may be in read-only memory, so can't be manipulated directly. */
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static struct fdt_header *fdt_to_load = NULL;
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/* Location of FDT on heap. */
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/* This is the copy we actually manipulate. */
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static struct fdt_header *fdtp = NULL;
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/* Size of FDT blob */
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static size_t fdtp_size = 0;
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/* Location of FDT in kernel or module. */
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/* This won't be set if FDT is loaded from disk or memory. */
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/* If it is set, we'll update it when fdt_copy() gets called. */
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static vm_offset_t fdtp_va = 0;
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static int fdt_load_dtb(vm_offset_t va);
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static int fdt_cmd_nyi(int argc, char *argv[]);
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static int fdt_cmd_addr(int argc, char *argv[]);
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static int fdt_cmd_mkprop(int argc, char *argv[]);
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static int fdt_cmd_cd(int argc, char *argv[]);
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static int fdt_cmd_hdr(int argc, char *argv[]);
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static int fdt_cmd_ls(int argc, char *argv[]);
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static int fdt_cmd_prop(int argc, char *argv[]);
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static int fdt_cmd_pwd(int argc, char *argv[]);
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static int fdt_cmd_rm(int argc, char *argv[]);
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static int fdt_cmd_mknode(int argc, char *argv[]);
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static int fdt_cmd_mres(int argc, char *argv[]);
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typedef int cmdf_t(int, char *[]);
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struct cmdtab {
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const char *name;
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cmdf_t *handler;
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int flags;
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};
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static const struct cmdtab commands[] = {
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{ "addr", &fdt_cmd_addr, 0 },
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{ "alias", &fdt_cmd_nyi, 0 },
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{ "cd", &fdt_cmd_cd, CMD_REQUIRES_BLOB },
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{ "header", &fdt_cmd_hdr, CMD_REQUIRES_BLOB },
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{ "ls", &fdt_cmd_ls, CMD_REQUIRES_BLOB },
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{ "mknode", &fdt_cmd_mknode, CMD_REQUIRES_BLOB },
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{ "mkprop", &fdt_cmd_mkprop, CMD_REQUIRES_BLOB },
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{ "mres", &fdt_cmd_mres, CMD_REQUIRES_BLOB },
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{ "prop", &fdt_cmd_prop, CMD_REQUIRES_BLOB },
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{ "pwd", &fdt_cmd_pwd, CMD_REQUIRES_BLOB },
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{ "rm", &fdt_cmd_rm, CMD_REQUIRES_BLOB },
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{ NULL, NULL }
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};
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static char cwd[FDT_CWD_LEN] = "/";
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static vm_offset_t
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fdt_find_static_dtb()
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{
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Elf_Ehdr *ehdr;
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Elf_Shdr *shdr;
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Elf_Sym sym;
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vm_offset_t strtab, symtab, fdt_start;
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uint64_t offs;
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struct preloaded_file *kfp;
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struct file_metadata *md;
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char *strp;
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int i, sym_count;
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debugf("fdt_find_static_dtb()\n");
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sym_count = symtab = strtab = 0;
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strp = NULL;
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offs = __elfN(relocation_offset);
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kfp = file_findfile(NULL, NULL);
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if (kfp == NULL)
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return (0);
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/* Locate the dynamic symbols and strtab. */
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md = file_findmetadata(kfp, MODINFOMD_ELFHDR);
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if (md == NULL)
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return (0);
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ehdr = (Elf_Ehdr *)md->md_data;
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md = file_findmetadata(kfp, MODINFOMD_SHDR);
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if (md == NULL)
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return (0);
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shdr = (Elf_Shdr *)md->md_data;
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for (i = 0; i < ehdr->e_shnum; ++i) {
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if (shdr[i].sh_type == SHT_DYNSYM && symtab == 0) {
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symtab = shdr[i].sh_addr + offs;
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sym_count = shdr[i].sh_size / sizeof(Elf_Sym);
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} else if (shdr[i].sh_type == SHT_STRTAB && strtab == 0) {
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strtab = shdr[i].sh_addr + offs;
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}
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}
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/*
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* The most efficient way to find a symbol would be to calculate a
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* hash, find proper bucket and chain, and thus find a symbol.
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* However, that would involve code duplication (e.g. for hash
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* function). So we're using simpler and a bit slower way: we're
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* iterating through symbols, searching for the one which name is
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* 'equal' to 'fdt_static_dtb'. To speed up the process a little bit,
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* we are eliminating symbols type of which is not STT_NOTYPE, or(and)
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* those which binding attribute is not STB_GLOBAL.
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*/
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fdt_start = 0;
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while (sym_count > 0 && fdt_start == 0) {
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COPYOUT(symtab, &sym, sizeof(sym));
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symtab += sizeof(sym);
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--sym_count;
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if (ELF_ST_BIND(sym.st_info) != STB_GLOBAL ||
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ELF_ST_TYPE(sym.st_info) != STT_NOTYPE)
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continue;
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strp = strdupout(strtab + sym.st_name);
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if (strcmp(strp, FDT_STATIC_DTB_SYMBOL) == 0)
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fdt_start = (vm_offset_t)sym.st_value + offs;
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free(strp);
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}
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return (fdt_start);
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}
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static int
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fdt_load_dtb(vm_offset_t va)
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{
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struct fdt_header header;
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int err;
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debugf("fdt_load_dtb(0x%08jx)\n", (uintmax_t)va);
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COPYOUT(va, &header, sizeof(header));
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err = fdt_check_header(&header);
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if (err < 0) {
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if (err == -FDT_ERR_BADVERSION) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"incompatible blob version: %d, should be: %d",
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fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION);
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} else {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"error validating blob: %s", fdt_strerror(err));
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}
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return (1);
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}
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/*
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* Release previous blob
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*/
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if (fdtp)
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free(fdtp);
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fdtp_size = fdt_totalsize(&header);
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fdtp = malloc(fdtp_size);
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if (fdtp == NULL) {
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command_errmsg = "can't allocate memory for device tree copy";
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return (1);
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}
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fdtp_va = va;
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COPYOUT(va, fdtp, fdtp_size);
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debugf("DTB blob found at 0x%jx, size: 0x%jx\n", (uintmax_t)va, (uintmax_t)fdtp_size);
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return (0);
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}
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int
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fdt_load_dtb_addr(struct fdt_header *header)
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{
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int err;
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debugf("fdt_load_dtb_addr(%p)\n", header);
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fdtp_size = fdt_totalsize(header);
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err = fdt_check_header(header);
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if (err < 0) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"error validating blob: %s", fdt_strerror(err));
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return (err);
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}
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free(fdtp);
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if ((fdtp = malloc(fdtp_size)) == NULL) {
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command_errmsg = "can't allocate memory for device tree copy";
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return (1);
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}
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fdtp_va = 0; // Don't write this back into module or kernel.
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bcopy(header, fdtp, fdtp_size);
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return (0);
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}
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int
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fdt_load_dtb_file(const char * filename)
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{
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struct preloaded_file *bfp, *oldbfp;
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int err;
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debugf("fdt_load_dtb_file(%s)\n", filename);
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oldbfp = file_findfile(NULL, "dtb");
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/* Attempt to load and validate a new dtb from a file. */
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if ((bfp = file_loadraw(filename, "dtb", 1)) == NULL) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"failed to load file '%s'", filename);
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return (1);
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}
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if ((err = fdt_load_dtb(bfp->f_addr)) != 0) {
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file_discard(bfp);
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return (err);
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}
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/* A new dtb was validated, discard any previous file. */
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if (oldbfp)
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file_discard(oldbfp);
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return (0);
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}
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static int
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fdt_load_dtb_overlay(const char * filename)
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{
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struct preloaded_file *bfp, *oldbfp;
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struct fdt_header header;
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int err;
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debugf("fdt_load_dtb_overlay(%s)\n", filename);
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oldbfp = file_findfile(filename, "dtbo");
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/* Attempt to load and validate a new dtb from a file. */
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if ((bfp = file_loadraw(filename, "dtbo", 1)) == NULL) {
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printf("failed to load file '%s'\n", filename);
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return (1);
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}
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COPYOUT(bfp->f_addr, &header, sizeof(header));
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err = fdt_check_header(&header);
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if (err < 0) {
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file_discard(bfp);
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if (err == -FDT_ERR_BADVERSION)
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printf("incompatible blob version: %d, should be: %d\n",
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fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION);
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else
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printf("error validating blob: %s\n",
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fdt_strerror(err));
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return (1);
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}
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/* A new dtb was validated, discard any previous file. */
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if (oldbfp)
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file_discard(oldbfp);
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return (0);
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}
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int
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fdt_load_dtb_overlays(const char * filenames)
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{
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char *names;
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char *name;
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char *comaptr;
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debugf("fdt_load_dtb_overlay(%s)\n", filenames);
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names = strdup(filenames);
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if (names == NULL)
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return (1);
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name = names;
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do {
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comaptr = strchr(name, ',');
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if (comaptr)
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*comaptr = '\0';
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fdt_load_dtb_overlay(name);
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name = comaptr + 1;
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} while(comaptr);
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free(names);
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return (0);
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}
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void
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fdt_apply_overlays()
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{
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struct preloaded_file *fp;
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size_t overlays_size, max_overlay_size, new_fdtp_size;
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void *new_fdtp;
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void *overlay;
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int rv;
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if ((fdtp == NULL) || (fdtp_size == 0))
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return;
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overlays_size = 0;
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max_overlay_size = 0;
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for (fp = file_findfile(NULL, "dtbo"); fp != NULL; fp = fp->f_next) {
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if (max_overlay_size < fp->f_size)
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max_overlay_size = fp->f_size;
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overlays_size += fp->f_size;
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}
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/* Nothing to apply */
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if (overlays_size == 0)
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return;
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/* It's actually more than enough */
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new_fdtp_size = fdtp_size + overlays_size;
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new_fdtp = malloc(new_fdtp_size);
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if (new_fdtp == NULL) {
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printf("failed to allocate memory for DTB blob with overlays\n");
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return;
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}
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overlay = malloc(max_overlay_size);
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if (overlay == NULL) {
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printf("failed to allocate memory for DTB blob with overlays\n");
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free(new_fdtp);
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return;
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}
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rv = fdt_open_into(fdtp, new_fdtp, new_fdtp_size);
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if (rv != 0) {
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printf("failed to open DTB blob for applying overlays\n");
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free(new_fdtp);
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free(overlay);
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return;
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}
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for (fp = file_findfile(NULL, "dtbo"); fp != NULL; fp = fp->f_next) {
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printf("applying DTB overlay '%s'\n", fp->f_name);
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COPYOUT(fp->f_addr, overlay, fp->f_size);
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fdt_overlay_apply(new_fdtp, overlay, fp->f_size);
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}
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free(fdtp);
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fdtp = new_fdtp;
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fdtp_size = new_fdtp_size;
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free(overlay);
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}
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int
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fdt_setup_fdtp()
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{
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struct preloaded_file *bfp;
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vm_offset_t va;
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debugf("fdt_setup_fdtp()\n");
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/* If we already loaded a file, use it. */
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if ((bfp = file_findfile(NULL, "dtb")) != NULL) {
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if (fdt_load_dtb(bfp->f_addr) == 0) {
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printf("Using DTB from loaded file '%s'.\n",
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bfp->f_name);
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return (0);
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}
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}
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/* If we were given the address of a valid blob in memory, use it. */
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if (fdt_to_load != NULL) {
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if (fdt_load_dtb_addr(fdt_to_load) == 0) {
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printf("Using DTB from memory address %p.\n",
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fdt_to_load);
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return (0);
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}
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}
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if (fdt_platform_load_dtb() == 0)
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return (0);
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/* If there is a dtb compiled into the kernel, use it. */
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if ((va = fdt_find_static_dtb()) != 0) {
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if (fdt_load_dtb(va) == 0) {
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printf("Using DTB compiled into kernel.\n");
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return (0);
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}
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}
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command_errmsg = "No device tree blob found!\n";
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return (1);
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}
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#define fdt_strtovect(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \
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(cellbuf), (lim), (cellsize), 0);
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/* Force using base 16 */
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#define fdt_strtovectx(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \
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(cellbuf), (lim), (cellsize), 16);
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static int
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_fdt_strtovect(const char *str, void *cellbuf, int lim, unsigned char cellsize,
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uint8_t base)
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{
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const char *buf = str;
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const char *end = str + strlen(str) - 2;
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uint32_t *u32buf = NULL;
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uint8_t *u8buf = NULL;
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int cnt = 0;
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if (cellsize == sizeof(uint32_t))
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u32buf = (uint32_t *)cellbuf;
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else
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u8buf = (uint8_t *)cellbuf;
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if (lim == 0)
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return (0);
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while (buf < end) {
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/* Skip white whitespace(s)/separators */
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while (!isxdigit(*buf) && buf < end)
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buf++;
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if (u32buf != NULL)
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u32buf[cnt] =
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cpu_to_fdt32((uint32_t)strtol(buf, NULL, base));
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else
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u8buf[cnt] = (uint8_t)strtol(buf, NULL, base);
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if (cnt + 1 <= lim - 1)
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cnt++;
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else
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break;
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buf++;
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/* Find another number */
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while ((isxdigit(*buf) || *buf == 'x') && buf < end)
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buf++;
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}
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return (cnt);
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}
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void
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fdt_fixup_ethernet(const char *str, char *ethstr, int len)
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{
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uint8_t tmp_addr[6];
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|
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/* Convert macaddr string into a vector of uints */
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fdt_strtovectx(str, &tmp_addr, 6, sizeof(uint8_t));
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/* Set actual property to a value from vect */
|
|
fdt_setprop(fdtp, fdt_path_offset(fdtp, ethstr),
|
|
"local-mac-address", &tmp_addr, 6 * sizeof(uint8_t));
|
|
}
|
|
|
|
void
|
|
fdt_fixup_cpubusfreqs(unsigned long cpufreq, unsigned long busfreq)
|
|
{
|
|
int lo, o = 0, o2, maxo = 0, depth;
|
|
const uint32_t zero = 0;
|
|
|
|
/* We want to modify every subnode of /cpus */
|
|
o = fdt_path_offset(fdtp, "/cpus");
|
|
if (o < 0)
|
|
return;
|
|
|
|
/* maxo should contain offset of node next to /cpus */
|
|
depth = 0;
|
|
maxo = o;
|
|
while (depth != -1)
|
|
maxo = fdt_next_node(fdtp, maxo, &depth);
|
|
|
|
/* Find CPU frequency properties */
|
|
o = fdt_node_offset_by_prop_value(fdtp, o, "clock-frequency",
|
|
&zero, sizeof(uint32_t));
|
|
|
|
o2 = fdt_node_offset_by_prop_value(fdtp, o, "bus-frequency", &zero,
|
|
sizeof(uint32_t));
|
|
|
|
lo = MIN(o, o2);
|
|
|
|
while (o != -FDT_ERR_NOTFOUND && o2 != -FDT_ERR_NOTFOUND) {
|
|
|
|
o = fdt_node_offset_by_prop_value(fdtp, lo,
|
|
"clock-frequency", &zero, sizeof(uint32_t));
|
|
|
|
o2 = fdt_node_offset_by_prop_value(fdtp, lo, "bus-frequency",
|
|
&zero, sizeof(uint32_t));
|
|
|
|
/* We're only interested in /cpus subnode(s) */
|
|
if (lo > maxo)
|
|
break;
|
|
|
|
fdt_setprop_inplace_cell(fdtp, lo, "clock-frequency",
|
|
(uint32_t)cpufreq);
|
|
|
|
fdt_setprop_inplace_cell(fdtp, lo, "bus-frequency",
|
|
(uint32_t)busfreq);
|
|
|
|
lo = MIN(o, o2);
|
|
}
|
|
}
|
|
|
|
#ifdef notyet
|
|
static int
|
|
fdt_reg_valid(uint32_t *reg, int len, int addr_cells, int size_cells)
|
|
{
|
|
int cells_in_tuple, i, tuples, tuple_size;
|
|
uint32_t cur_start, cur_size;
|
|
|
|
cells_in_tuple = (addr_cells + size_cells);
|
|
tuple_size = cells_in_tuple * sizeof(uint32_t);
|
|
tuples = len / tuple_size;
|
|
if (tuples == 0)
|
|
return (EINVAL);
|
|
|
|
for (i = 0; i < tuples; i++) {
|
|
if (addr_cells == 2)
|
|
cur_start = fdt64_to_cpu(reg[i * cells_in_tuple]);
|
|
else
|
|
cur_start = fdt32_to_cpu(reg[i * cells_in_tuple]);
|
|
|
|
if (size_cells == 2)
|
|
cur_size = fdt64_to_cpu(reg[i * cells_in_tuple + 2]);
|
|
else
|
|
cur_size = fdt32_to_cpu(reg[i * cells_in_tuple + 1]);
|
|
|
|
if (cur_size == 0)
|
|
return (EINVAL);
|
|
|
|
debugf(" reg#%d (start: 0x%0x size: 0x%0x) valid!\n",
|
|
i, cur_start, cur_size);
|
|
}
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
fdt_fixup_memory(struct fdt_mem_region *region, size_t num)
|
|
{
|
|
struct fdt_mem_region *curmr;
|
|
uint32_t addr_cells, size_cells;
|
|
uint32_t *addr_cellsp, *size_cellsp;
|
|
int err, i, len, memory, root;
|
|
size_t realmrno;
|
|
uint8_t *buf, *sb;
|
|
uint64_t rstart, rsize;
|
|
int reserved;
|
|
|
|
root = fdt_path_offset(fdtp, "/");
|
|
if (root < 0) {
|
|
sprintf(command_errbuf, "Could not find root node !");
|
|
return;
|
|
}
|
|
|
|
memory = fdt_path_offset(fdtp, "/memory");
|
|
if (memory <= 0) {
|
|
/* Create proper '/memory' node. */
|
|
memory = fdt_add_subnode(fdtp, root, "memory");
|
|
if (memory <= 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"Could not fixup '/memory' "
|
|
"node, error code : %d!\n", memory);
|
|
return;
|
|
}
|
|
|
|
err = fdt_setprop(fdtp, memory, "device_type", "memory",
|
|
sizeof("memory"));
|
|
|
|
if (err < 0)
|
|
return;
|
|
}
|
|
|
|
addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells",
|
|
NULL);
|
|
size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL);
|
|
|
|
if (addr_cellsp == NULL || size_cellsp == NULL) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"Could not fixup '/memory' node : "
|
|
"%s %s property not found in root node!\n",
|
|
(!addr_cellsp) ? "#address-cells" : "",
|
|
(!size_cellsp) ? "#size-cells" : "");
|
|
return;
|
|
}
|
|
|
|
addr_cells = fdt32_to_cpu(*addr_cellsp);
|
|
size_cells = fdt32_to_cpu(*size_cellsp);
|
|
|
|
/*
|
|
* Convert memreserve data to memreserve property
|
|
* Check if property already exists
|
|
*/
|
|
reserved = fdt_num_mem_rsv(fdtp);
|
|
if (reserved &&
|
|
(fdt_getprop(fdtp, root, "memreserve", NULL) == NULL)) {
|
|
len = (addr_cells + size_cells) * reserved * sizeof(uint32_t);
|
|
sb = buf = (uint8_t *)malloc(len);
|
|
if (!buf)
|
|
return;
|
|
|
|
bzero(buf, len);
|
|
|
|
for (i = 0; i < reserved; i++) {
|
|
if (fdt_get_mem_rsv(fdtp, i, &rstart, &rsize))
|
|
break;
|
|
if (rsize) {
|
|
/* Ensure endianness, and put cells into a buffer */
|
|
if (addr_cells == 2)
|
|
*(uint64_t *)buf =
|
|
cpu_to_fdt64(rstart);
|
|
else
|
|
*(uint32_t *)buf =
|
|
cpu_to_fdt32(rstart);
|
|
|
|
buf += sizeof(uint32_t) * addr_cells;
|
|
if (size_cells == 2)
|
|
*(uint64_t *)buf =
|
|
cpu_to_fdt64(rsize);
|
|
else
|
|
*(uint32_t *)buf =
|
|
cpu_to_fdt32(rsize);
|
|
|
|
buf += sizeof(uint32_t) * size_cells;
|
|
}
|
|
}
|
|
|
|
/* Set property */
|
|
if ((err = fdt_setprop(fdtp, root, "memreserve", sb, len)) < 0)
|
|
printf("Could not fixup 'memreserve' property.\n");
|
|
|
|
free(sb);
|
|
}
|
|
|
|
/* Count valid memory regions entries in sysinfo. */
|
|
realmrno = num;
|
|
for (i = 0; i < num; i++)
|
|
if (region[i].start == 0 && region[i].size == 0)
|
|
realmrno--;
|
|
|
|
if (realmrno == 0) {
|
|
sprintf(command_errbuf, "Could not fixup '/memory' node : "
|
|
"sysinfo doesn't contain valid memory regions info!\n");
|
|
return;
|
|
}
|
|
|
|
len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t);
|
|
sb = buf = (uint8_t *)malloc(len);
|
|
if (!buf)
|
|
return;
|
|
|
|
bzero(buf, len);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
curmr = ®ion[i];
|
|
if (curmr->size != 0) {
|
|
/* Ensure endianness, and put cells into a buffer */
|
|
if (addr_cells == 2)
|
|
*(uint64_t *)buf =
|
|
cpu_to_fdt64(curmr->start);
|
|
else
|
|
*(uint32_t *)buf =
|
|
cpu_to_fdt32(curmr->start);
|
|
|
|
buf += sizeof(uint32_t) * addr_cells;
|
|
if (size_cells == 2)
|
|
*(uint64_t *)buf =
|
|
cpu_to_fdt64(curmr->size);
|
|
else
|
|
*(uint32_t *)buf =
|
|
cpu_to_fdt32(curmr->size);
|
|
|
|
buf += sizeof(uint32_t) * size_cells;
|
|
}
|
|
}
|
|
|
|
/* Set property */
|
|
if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0)
|
|
sprintf(command_errbuf, "Could not fixup '/memory' node.\n");
|
|
|
|
free(sb);
|
|
}
|
|
|
|
void
|
|
fdt_fixup_stdout(const char *str)
|
|
{
|
|
char *ptr;
|
|
int serialno;
|
|
int len, no, sero;
|
|
const struct fdt_property *prop;
|
|
char *tmp[10];
|
|
|
|
ptr = (char *)str + strlen(str) - 1;
|
|
while (ptr > str && isdigit(*(str - 1)))
|
|
str--;
|
|
|
|
if (ptr == str)
|
|
return;
|
|
|
|
serialno = (int)strtol(ptr, NULL, 0);
|
|
no = fdt_path_offset(fdtp, "/chosen");
|
|
if (no < 0)
|
|
return;
|
|
|
|
prop = fdt_get_property(fdtp, no, "stdout", &len);
|
|
|
|
/* If /chosen/stdout does not extist, create it */
|
|
if (prop == NULL || (prop != NULL && len == 0)) {
|
|
|
|
bzero(tmp, 10 * sizeof(char));
|
|
strcpy((char *)&tmp, "serial");
|
|
if (strlen(ptr) > 3)
|
|
/* Serial number too long */
|
|
return;
|
|
|
|
strncpy((char *)tmp + 6, ptr, 3);
|
|
sero = fdt_path_offset(fdtp, (const char *)tmp);
|
|
if (sero < 0)
|
|
/*
|
|
* If serial device we're trying to assign
|
|
* stdout to doesn't exist in DT -- return.
|
|
*/
|
|
return;
|
|
|
|
fdt_setprop(fdtp, no, "stdout", &tmp,
|
|
strlen((char *)&tmp) + 1);
|
|
fdt_setprop(fdtp, no, "stdin", &tmp,
|
|
strlen((char *)&tmp) + 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Locate the blob, fix it up and return its location.
|
|
*/
|
|
static int
|
|
fdt_fixup(void)
|
|
{
|
|
int chosen, len;
|
|
|
|
len = 0;
|
|
|
|
debugf("fdt_fixup()\n");
|
|
|
|
if (fdtp == NULL && fdt_setup_fdtp() != 0)
|
|
return (0);
|
|
|
|
/* Create /chosen node (if not exists) */
|
|
if ((chosen = fdt_subnode_offset(fdtp, 0, "chosen")) ==
|
|
-FDT_ERR_NOTFOUND)
|
|
chosen = fdt_add_subnode(fdtp, 0, "chosen");
|
|
|
|
/* Value assigned to fixup-applied does not matter. */
|
|
if (fdt_getprop(fdtp, chosen, "fixup-applied", NULL))
|
|
return (1);
|
|
|
|
fdt_platform_fixups();
|
|
|
|
fdt_setprop(fdtp, chosen, "fixup-applied", NULL, 0);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Copy DTB blob to specified location and return size
|
|
*/
|
|
int
|
|
fdt_copy(vm_offset_t va)
|
|
{
|
|
int err;
|
|
debugf("fdt_copy va 0x%08x\n", va);
|
|
if (fdtp == NULL) {
|
|
err = fdt_setup_fdtp();
|
|
if (err) {
|
|
printf("No valid device tree blob found!\n");
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
if (fdt_fixup() == 0)
|
|
return (0);
|
|
|
|
if (fdtp_va != 0) {
|
|
/* Overwrite the FDT with the fixed version. */
|
|
/* XXX Is this really appropriate? */
|
|
COPYIN(fdtp, fdtp_va, fdtp_size);
|
|
}
|
|
COPYIN(fdtp, va, fdtp_size);
|
|
return (fdtp_size);
|
|
}
|
|
|
|
|
|
|
|
int
|
|
command_fdt_internal(int argc, char *argv[])
|
|
{
|
|
cmdf_t *cmdh;
|
|
int flags;
|
|
char *cmd;
|
|
int i, err;
|
|
|
|
if (argc < 2) {
|
|
command_errmsg = "usage is 'fdt <command> [<args>]";
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
/*
|
|
* Validate fdt <command>.
|
|
*/
|
|
cmd = strdup(argv[1]);
|
|
i = 0;
|
|
cmdh = NULL;
|
|
while (!(commands[i].name == NULL)) {
|
|
if (strcmp(cmd, commands[i].name) == 0) {
|
|
/* found it */
|
|
cmdh = commands[i].handler;
|
|
flags = commands[i].flags;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
if (cmdh == NULL) {
|
|
command_errmsg = "unknown command";
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
if (flags & CMD_REQUIRES_BLOB) {
|
|
/*
|
|
* Check if uboot env vars were parsed already. If not, do it now.
|
|
*/
|
|
if (fdt_fixup() == 0)
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
/*
|
|
* Call command handler.
|
|
*/
|
|
err = (*cmdh)(argc, argv);
|
|
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_addr(int argc, char *argv[])
|
|
{
|
|
struct preloaded_file *fp;
|
|
struct fdt_header *hdr;
|
|
const char *addr;
|
|
char *cp;
|
|
|
|
fdt_to_load = NULL;
|
|
|
|
if (argc > 2)
|
|
addr = argv[2];
|
|
else {
|
|
sprintf(command_errbuf, "no address specified");
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
hdr = (struct fdt_header *)strtoul(addr, &cp, 16);
|
|
if (cp == addr) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"Invalid address: %s", addr);
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
while ((fp = file_findfile(NULL, "dtb")) != NULL) {
|
|
file_discard(fp);
|
|
}
|
|
|
|
fdt_to_load = hdr;
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_cd(int argc, char *argv[])
|
|
{
|
|
char *path;
|
|
char tmp[FDT_CWD_LEN];
|
|
int len, o;
|
|
|
|
path = (argc > 2) ? argv[2] : "/";
|
|
|
|
if (path[0] == '/') {
|
|
len = strlen(path);
|
|
if (len >= FDT_CWD_LEN)
|
|
goto fail;
|
|
} else {
|
|
/* Handle path specification relative to cwd */
|
|
len = strlen(cwd) + strlen(path) + 1;
|
|
if (len >= FDT_CWD_LEN)
|
|
goto fail;
|
|
|
|
strcpy(tmp, cwd);
|
|
strcat(tmp, "/");
|
|
strcat(tmp, path);
|
|
path = tmp;
|
|
}
|
|
|
|
o = fdt_path_offset(fdtp, path);
|
|
if (o < 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"could not find node: '%s'", path);
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
strcpy(cwd, path);
|
|
return (CMD_OK);
|
|
|
|
fail:
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"path too long: %d, max allowed: %d", len, FDT_CWD_LEN - 1);
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_hdr(int argc __unused, char *argv[] __unused)
|
|
{
|
|
char line[80];
|
|
int ver;
|
|
|
|
if (fdtp == NULL) {
|
|
command_errmsg = "no device tree blob pointer?!";
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
ver = fdt_version(fdtp);
|
|
pager_open();
|
|
sprintf(line, "\nFlattened device tree header (%p):\n", fdtp);
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " magic = 0x%08x\n", fdt_magic(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " size = %d\n", fdt_totalsize(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " off_dt_struct = 0x%08x\n",
|
|
fdt_off_dt_struct(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " off_dt_strings = 0x%08x\n",
|
|
fdt_off_dt_strings(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " off_mem_rsvmap = 0x%08x\n",
|
|
fdt_off_mem_rsvmap(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " version = %d\n", ver);
|
|
if (pager_output(line))
|
|
goto out;
|
|
sprintf(line, " last compatible version = %d\n",
|
|
fdt_last_comp_version(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
if (ver >= 2) {
|
|
sprintf(line, " boot_cpuid = %d\n",
|
|
fdt_boot_cpuid_phys(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
}
|
|
if (ver >= 3) {
|
|
sprintf(line, " size_dt_strings = %d\n",
|
|
fdt_size_dt_strings(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
}
|
|
if (ver >= 17) {
|
|
sprintf(line, " size_dt_struct = %d\n",
|
|
fdt_size_dt_struct(fdtp));
|
|
if (pager_output(line))
|
|
goto out;
|
|
}
|
|
out:
|
|
pager_close();
|
|
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_ls(int argc, char *argv[])
|
|
{
|
|
const char *prevname[FDT_MAX_DEPTH] = { NULL };
|
|
const char *name;
|
|
char *path;
|
|
int i, o, depth;
|
|
|
|
path = (argc > 2) ? argv[2] : NULL;
|
|
if (path == NULL)
|
|
path = cwd;
|
|
|
|
o = fdt_path_offset(fdtp, path);
|
|
if (o < 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"could not find node: '%s'", path);
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
for (depth = 0;
|
|
(o >= 0) && (depth >= 0);
|
|
o = fdt_next_node(fdtp, o, &depth)) {
|
|
|
|
name = fdt_get_name(fdtp, o, NULL);
|
|
|
|
if (depth > FDT_MAX_DEPTH) {
|
|
printf("max depth exceeded: %d\n", depth);
|
|
continue;
|
|
}
|
|
|
|
prevname[depth] = name;
|
|
|
|
/* Skip root (i = 1) when printing devices */
|
|
for (i = 1; i <= depth; i++) {
|
|
if (prevname[i] == NULL)
|
|
break;
|
|
|
|
if (strcmp(cwd, "/") == 0)
|
|
printf("/");
|
|
printf("%s", prevname[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static __inline int
|
|
isprint(int c)
|
|
{
|
|
|
|
return (c >= ' ' && c <= 0x7e);
|
|
}
|
|
|
|
static int
|
|
fdt_isprint(const void *data, int len, int *count)
|
|
{
|
|
const char *d;
|
|
char ch;
|
|
int yesno, i;
|
|
|
|
if (len == 0)
|
|
return (0);
|
|
|
|
d = (const char *)data;
|
|
if (d[len - 1] != '\0')
|
|
return (0);
|
|
|
|
*count = 0;
|
|
yesno = 1;
|
|
for (i = 0; i < len; i++) {
|
|
ch = *(d + i);
|
|
if (isprint(ch) || (ch == '\0' && i > 0)) {
|
|
/* Count strings */
|
|
if (ch == '\0')
|
|
(*count)++;
|
|
continue;
|
|
}
|
|
|
|
yesno = 0;
|
|
break;
|
|
}
|
|
|
|
return (yesno);
|
|
}
|
|
|
|
static int
|
|
fdt_data_str(const void *data, int len, int count, char **buf)
|
|
{
|
|
char *b, *tmp;
|
|
const char *d;
|
|
int buf_len, i, l;
|
|
|
|
/*
|
|
* Calculate the length for the string and allocate memory.
|
|
*
|
|
* Note that 'len' already includes at least one terminator.
|
|
*/
|
|
buf_len = len;
|
|
if (count > 1) {
|
|
/*
|
|
* Each token had already a terminator buried in 'len', but we
|
|
* only need one eventually, don't count space for these.
|
|
*/
|
|
buf_len -= count - 1;
|
|
|
|
/* Each consecutive token requires a ", " separator. */
|
|
buf_len += count * 2;
|
|
}
|
|
|
|
/* Add some space for surrounding double quotes. */
|
|
buf_len += count * 2;
|
|
|
|
/* Note that string being put in 'tmp' may be as big as 'buf_len'. */
|
|
b = (char *)malloc(buf_len);
|
|
tmp = (char *)malloc(buf_len);
|
|
if (b == NULL)
|
|
goto error;
|
|
|
|
if (tmp == NULL) {
|
|
free(b);
|
|
goto error;
|
|
}
|
|
|
|
b[0] = '\0';
|
|
|
|
/*
|
|
* Now that we have space, format the string.
|
|
*/
|
|
i = 0;
|
|
do {
|
|
d = (const char *)data + i;
|
|
l = strlen(d) + 1;
|
|
|
|
sprintf(tmp, "\"%s\"%s", d,
|
|
(i + l) < len ? ", " : "");
|
|
strcat(b, tmp);
|
|
|
|
i += l;
|
|
|
|
} while (i < len);
|
|
*buf = b;
|
|
|
|
free(tmp);
|
|
|
|
return (0);
|
|
error:
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
fdt_data_cell(const void *data, int len, char **buf)
|
|
{
|
|
char *b, *tmp;
|
|
const uint32_t *c;
|
|
int count, i, l;
|
|
|
|
/* Number of cells */
|
|
count = len / 4;
|
|
|
|
/*
|
|
* Calculate the length for the string and allocate memory.
|
|
*/
|
|
|
|
/* Each byte translates to 2 output characters */
|
|
l = len * 2;
|
|
if (count > 1) {
|
|
/* Each consecutive cell requires a " " separator. */
|
|
l += (count - 1) * 1;
|
|
}
|
|
/* Each cell will have a "0x" prefix */
|
|
l += count * 2;
|
|
/* Space for surrounding <> and terminator */
|
|
l += 3;
|
|
|
|
b = (char *)malloc(l);
|
|
tmp = (char *)malloc(l);
|
|
if (b == NULL)
|
|
goto error;
|
|
|
|
if (tmp == NULL) {
|
|
free(b);
|
|
goto error;
|
|
}
|
|
|
|
b[0] = '\0';
|
|
strcat(b, "<");
|
|
|
|
for (i = 0; i < len; i += 4) {
|
|
c = (const uint32_t *)((const uint8_t *)data + i);
|
|
sprintf(tmp, "0x%08x%s", fdt32_to_cpu(*c),
|
|
i < (len - 4) ? " " : "");
|
|
strcat(b, tmp);
|
|
}
|
|
strcat(b, ">");
|
|
*buf = b;
|
|
|
|
free(tmp);
|
|
|
|
return (0);
|
|
error:
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
fdt_data_bytes(const void *data, int len, char **buf)
|
|
{
|
|
char *b, *tmp;
|
|
const char *d;
|
|
int i, l;
|
|
|
|
/*
|
|
* Calculate the length for the string and allocate memory.
|
|
*/
|
|
|
|
/* Each byte translates to 2 output characters */
|
|
l = len * 2;
|
|
if (len > 1)
|
|
/* Each consecutive byte requires a " " separator. */
|
|
l += (len - 1) * 1;
|
|
/* Each byte will have a "0x" prefix */
|
|
l += len * 2;
|
|
/* Space for surrounding [] and terminator. */
|
|
l += 3;
|
|
|
|
b = (char *)malloc(l);
|
|
tmp = (char *)malloc(l);
|
|
if (b == NULL)
|
|
goto error;
|
|
|
|
if (tmp == NULL) {
|
|
free(b);
|
|
goto error;
|
|
}
|
|
|
|
b[0] = '\0';
|
|
strcat(b, "[");
|
|
|
|
for (i = 0, d = data; i < len; i++) {
|
|
sprintf(tmp, "0x%02x%s", d[i], i < len - 1 ? " " : "");
|
|
strcat(b, tmp);
|
|
}
|
|
strcat(b, "]");
|
|
*buf = b;
|
|
|
|
free(tmp);
|
|
|
|
return (0);
|
|
error:
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
fdt_data_fmt(const void *data, int len, char **buf)
|
|
{
|
|
int count;
|
|
|
|
if (len == 0) {
|
|
*buf = NULL;
|
|
return (1);
|
|
}
|
|
|
|
if (fdt_isprint(data, len, &count))
|
|
return (fdt_data_str(data, len, count, buf));
|
|
|
|
else if ((len % 4) == 0)
|
|
return (fdt_data_cell(data, len, buf));
|
|
|
|
else
|
|
return (fdt_data_bytes(data, len, buf));
|
|
}
|
|
|
|
static int
|
|
fdt_prop(int offset)
|
|
{
|
|
char *line, *buf;
|
|
const struct fdt_property *prop;
|
|
const char *name;
|
|
const void *data;
|
|
int len, rv;
|
|
|
|
line = NULL;
|
|
prop = fdt_offset_ptr(fdtp, offset, sizeof(*prop));
|
|
if (prop == NULL)
|
|
return (1);
|
|
|
|
name = fdt_string(fdtp, fdt32_to_cpu(prop->nameoff));
|
|
len = fdt32_to_cpu(prop->len);
|
|
|
|
rv = 0;
|
|
buf = NULL;
|
|
if (len == 0) {
|
|
/* Property without value */
|
|
line = (char *)malloc(strlen(name) + 2);
|
|
if (line == NULL) {
|
|
rv = 2;
|
|
goto out2;
|
|
}
|
|
sprintf(line, "%s\n", name);
|
|
goto out1;
|
|
}
|
|
|
|
/*
|
|
* Process property with value
|
|
*/
|
|
data = prop->data;
|
|
|
|
if (fdt_data_fmt(data, len, &buf) != 0) {
|
|
rv = 3;
|
|
goto out2;
|
|
}
|
|
|
|
line = (char *)malloc(strlen(name) + strlen(FDT_PROP_SEP) +
|
|
strlen(buf) + 2);
|
|
if (line == NULL) {
|
|
sprintf(command_errbuf, "could not allocate space for string");
|
|
rv = 4;
|
|
goto out2;
|
|
}
|
|
|
|
sprintf(line, "%s" FDT_PROP_SEP "%s\n", name, buf);
|
|
|
|
out1:
|
|
pager_open();
|
|
pager_output(line);
|
|
pager_close();
|
|
|
|
out2:
|
|
if (buf)
|
|
free(buf);
|
|
|
|
if (line)
|
|
free(line);
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
fdt_modprop(int nodeoff, char *propname, void *value, char mode)
|
|
{
|
|
uint32_t cells[100];
|
|
const char *buf;
|
|
int len, rv;
|
|
const struct fdt_property *p;
|
|
|
|
p = fdt_get_property(fdtp, nodeoff, propname, NULL);
|
|
|
|
if (p != NULL) {
|
|
if (mode == 1) {
|
|
/* Adding inexistant value in mode 1 is forbidden */
|
|
sprintf(command_errbuf, "property already exists!");
|
|
return (CMD_ERROR);
|
|
}
|
|
} else if (mode == 0) {
|
|
sprintf(command_errbuf, "property does not exist!");
|
|
return (CMD_ERROR);
|
|
}
|
|
len = strlen(value);
|
|
rv = 0;
|
|
buf = value;
|
|
|
|
switch (*buf) {
|
|
case '&':
|
|
/* phandles */
|
|
break;
|
|
case '<':
|
|
/* Data cells */
|
|
len = fdt_strtovect(buf, (void *)&cells, 100,
|
|
sizeof(uint32_t));
|
|
|
|
rv = fdt_setprop(fdtp, nodeoff, propname, &cells,
|
|
len * sizeof(uint32_t));
|
|
break;
|
|
case '[':
|
|
/* Data bytes */
|
|
len = fdt_strtovect(buf, (void *)&cells, 100,
|
|
sizeof(uint8_t));
|
|
|
|
rv = fdt_setprop(fdtp, nodeoff, propname, &cells,
|
|
len * sizeof(uint8_t));
|
|
break;
|
|
case '"':
|
|
default:
|
|
/* Default -- string */
|
|
rv = fdt_setprop_string(fdtp, nodeoff, propname, value);
|
|
break;
|
|
}
|
|
|
|
if (rv != 0) {
|
|
if (rv == -FDT_ERR_NOSPACE)
|
|
sprintf(command_errbuf,
|
|
"Device tree blob is too small!\n");
|
|
else
|
|
sprintf(command_errbuf,
|
|
"Could not add/modify property!\n");
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
/* Merge strings from argv into a single string */
|
|
static int
|
|
fdt_merge_strings(int argc, char *argv[], int start, char **buffer)
|
|
{
|
|
char *buf;
|
|
int i, idx, sz;
|
|
|
|
*buffer = NULL;
|
|
sz = 0;
|
|
|
|
for (i = start; i < argc; i++)
|
|
sz += strlen(argv[i]);
|
|
|
|
/* Additional bytes for whitespaces between args */
|
|
sz += argc - start;
|
|
|
|
buf = (char *)malloc(sizeof(char) * sz);
|
|
if (buf == NULL) {
|
|
sprintf(command_errbuf, "could not allocate space "
|
|
"for string");
|
|
return (1);
|
|
}
|
|
bzero(buf, sizeof(char) * sz);
|
|
|
|
idx = 0;
|
|
for (i = start, idx = 0; i < argc; i++) {
|
|
strcpy(buf + idx, argv[i]);
|
|
idx += strlen(argv[i]);
|
|
buf[idx] = ' ';
|
|
idx++;
|
|
}
|
|
buf[sz - 1] = '\0';
|
|
*buffer = buf;
|
|
return (0);
|
|
}
|
|
|
|
/* Extract offset and name of node/property from a given path */
|
|
static int
|
|
fdt_extract_nameloc(char **pathp, char **namep, int *nodeoff)
|
|
{
|
|
int o;
|
|
char *path = *pathp, *name = NULL, *subpath = NULL;
|
|
|
|
subpath = strrchr(path, '/');
|
|
if (subpath == NULL) {
|
|
o = fdt_path_offset(fdtp, cwd);
|
|
name = path;
|
|
path = (char *)&cwd;
|
|
} else {
|
|
*subpath = '\0';
|
|
if (strlen(path) == 0)
|
|
path = cwd;
|
|
|
|
name = subpath + 1;
|
|
o = fdt_path_offset(fdtp, path);
|
|
}
|
|
|
|
if (strlen(name) == 0) {
|
|
sprintf(command_errbuf, "name not specified");
|
|
return (1);
|
|
}
|
|
if (o < 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"could not find node: '%s'", path);
|
|
return (1);
|
|
}
|
|
*namep = name;
|
|
*nodeoff = o;
|
|
*pathp = path;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_prop(int argc, char *argv[])
|
|
{
|
|
char *path, *propname, *value;
|
|
int o, next, depth, rv;
|
|
uint32_t tag;
|
|
|
|
path = (argc > 2) ? argv[2] : NULL;
|
|
|
|
value = NULL;
|
|
|
|
if (argc > 3) {
|
|
/* Merge property value strings into one */
|
|
if (fdt_merge_strings(argc, argv, 3, &value) != 0)
|
|
return (CMD_ERROR);
|
|
} else
|
|
value = NULL;
|
|
|
|
if (path == NULL)
|
|
path = cwd;
|
|
|
|
rv = CMD_OK;
|
|
|
|
if (value) {
|
|
/* If value is specified -- try to modify prop. */
|
|
if (fdt_extract_nameloc(&path, &propname, &o) != 0)
|
|
return (CMD_ERROR);
|
|
|
|
rv = fdt_modprop(o, propname, value, 0);
|
|
if (rv)
|
|
return (CMD_ERROR);
|
|
return (CMD_OK);
|
|
|
|
}
|
|
/* User wants to display properties */
|
|
o = fdt_path_offset(fdtp, path);
|
|
|
|
if (o < 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"could not find node: '%s'", path);
|
|
rv = CMD_ERROR;
|
|
goto out;
|
|
}
|
|
|
|
depth = 0;
|
|
while (depth >= 0) {
|
|
tag = fdt_next_tag(fdtp, o, &next);
|
|
switch (tag) {
|
|
case FDT_NOP:
|
|
break;
|
|
case FDT_PROP:
|
|
if (depth > 1)
|
|
/* Don't process properties of nested nodes */
|
|
break;
|
|
|
|
if (fdt_prop(o) != 0) {
|
|
sprintf(command_errbuf, "could not process "
|
|
"property");
|
|
rv = CMD_ERROR;
|
|
goto out;
|
|
}
|
|
break;
|
|
case FDT_BEGIN_NODE:
|
|
depth++;
|
|
if (depth > FDT_MAX_DEPTH) {
|
|
printf("warning: nesting too deep: %d\n",
|
|
depth);
|
|
goto out;
|
|
}
|
|
break;
|
|
case FDT_END_NODE:
|
|
depth--;
|
|
if (depth == 0)
|
|
/*
|
|
* This is the end of our starting node, force
|
|
* the loop finish.
|
|
*/
|
|
depth--;
|
|
break;
|
|
}
|
|
o = next;
|
|
}
|
|
out:
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_mkprop(int argc, char *argv[])
|
|
{
|
|
int o;
|
|
char *path, *propname, *value;
|
|
|
|
path = (argc > 2) ? argv[2] : NULL;
|
|
|
|
value = NULL;
|
|
|
|
if (argc > 3) {
|
|
/* Merge property value strings into one */
|
|
if (fdt_merge_strings(argc, argv, 3, &value) != 0)
|
|
return (CMD_ERROR);
|
|
} else
|
|
value = NULL;
|
|
|
|
if (fdt_extract_nameloc(&path, &propname, &o) != 0)
|
|
return (CMD_ERROR);
|
|
|
|
if (fdt_modprop(o, propname, value, 1))
|
|
return (CMD_ERROR);
|
|
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_rm(int argc, char *argv[])
|
|
{
|
|
int o, rv;
|
|
char *path = NULL, *propname;
|
|
|
|
if (argc > 2)
|
|
path = argv[2];
|
|
else {
|
|
sprintf(command_errbuf, "no node/property name specified");
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
o = fdt_path_offset(fdtp, path);
|
|
if (o < 0) {
|
|
/* If node not found -- try to find & delete property */
|
|
if (fdt_extract_nameloc(&path, &propname, &o) != 0)
|
|
return (CMD_ERROR);
|
|
|
|
if ((rv = fdt_delprop(fdtp, o, propname)) != 0) {
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
"could not delete %s\n",
|
|
(rv == -FDT_ERR_NOTFOUND) ?
|
|
"(property/node does not exist)" : "");
|
|
return (CMD_ERROR);
|
|
|
|
} else
|
|
return (CMD_OK);
|
|
}
|
|
/* If node exists -- remove node */
|
|
rv = fdt_del_node(fdtp, o);
|
|
if (rv) {
|
|
sprintf(command_errbuf, "could not delete node");
|
|
return (CMD_ERROR);
|
|
}
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_mknode(int argc, char *argv[])
|
|
{
|
|
int o, rv;
|
|
char *path = NULL, *nodename = NULL;
|
|
|
|
if (argc > 2)
|
|
path = argv[2];
|
|
else {
|
|
sprintf(command_errbuf, "no node name specified");
|
|
return (CMD_ERROR);
|
|
}
|
|
|
|
if (fdt_extract_nameloc(&path, &nodename, &o) != 0)
|
|
return (CMD_ERROR);
|
|
|
|
rv = fdt_add_subnode(fdtp, o, nodename);
|
|
|
|
if (rv < 0) {
|
|
if (rv == -FDT_ERR_NOSPACE)
|
|
sprintf(command_errbuf,
|
|
"Device tree blob is too small!\n");
|
|
else
|
|
sprintf(command_errbuf,
|
|
"Could not add node!\n");
|
|
return (CMD_ERROR);
|
|
}
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_pwd(int argc, char *argv[])
|
|
{
|
|
char line[FDT_CWD_LEN];
|
|
|
|
pager_open();
|
|
sprintf(line, "%s\n", cwd);
|
|
pager_output(line);
|
|
pager_close();
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_mres(int argc, char *argv[])
|
|
{
|
|
uint64_t start, size;
|
|
int i, total;
|
|
char line[80];
|
|
|
|
pager_open();
|
|
total = fdt_num_mem_rsv(fdtp);
|
|
if (total > 0) {
|
|
if (pager_output("Reserved memory regions:\n"))
|
|
goto out;
|
|
for (i = 0; i < total; i++) {
|
|
fdt_get_mem_rsv(fdtp, i, &start, &size);
|
|
sprintf(line, "reg#%d: (start: 0x%jx, size: 0x%jx)\n",
|
|
i, start, size);
|
|
if (pager_output(line))
|
|
goto out;
|
|
}
|
|
} else
|
|
pager_output("No reserved memory regions\n");
|
|
out:
|
|
pager_close();
|
|
|
|
return (CMD_OK);
|
|
}
|
|
|
|
static int
|
|
fdt_cmd_nyi(int argc, char *argv[])
|
|
{
|
|
|
|
printf("command not yet implemented\n");
|
|
return (CMD_ERROR);
|
|
}
|