v2/util: romfs -> cbfs rename
It's all sed here. romfs->cbfs, ROMFS->CBFS, romtool->cbfstool Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4110 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Peter Stuge
282
util/cbfstool/util.c
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282
util/cbfstool/util.c
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/*
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* cbfstool
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*
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* Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include "cbfstool.h"
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int get_size(const char *size)
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{
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char *next;
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int val = strtoul(size, &next, 0);
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/* Support modifiers for the size kK and mM for kbytes and
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mbytes respectfully */
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if (next != NULL) {
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if (*next == 'k' || *next == 'K')
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val *= 1024;
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else if (*next == 'm' || *next == 'M')
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val *= (1024 * 1024);
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}
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return val;
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}
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int copy_from_fd(int fd, void *ptr, int size)
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{
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unsigned char *p = ptr;
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while (size > 0) {
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int ret = read(fd, p, size);
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if (ret == -1) {
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ERROR("Error while reading: %m\n");
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return -1;
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}
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if (ret == 0) {
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ERROR("Unexpected end of file\n");
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return -1;
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}
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p += ret;
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size -= ret;
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}
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return 0;
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}
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int size_and_open(const char *filename, unsigned int *size)
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{
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struct stat s;
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int fd = open(filename, O_RDONLY);
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if (fd == -1) {
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ERROR("Unable to open %s: %m\n", filename);
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return -1;
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}
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if (fstat(fd, &s)) {
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ERROR("Unable to stat %s: %m\n", filename);
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close(fd);
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return -1;
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}
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*size = s.st_size;
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return fd;
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}
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int map_rom(struct rom *rom, int size)
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{
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rom->ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
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rom->fd, 0);
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if (rom->ptr == MAP_FAILED) {
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ERROR("Could not map the rom: %m\n");
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rom->ptr = NULL;
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return -1;
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}
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return 0;
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}
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int open_rom(struct rom *rom, const char *filename)
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{
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struct stat s;
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unsigned long offset;
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if (stat(filename, &s)) {
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ERROR("Could not stat %s: %m\n", filename);
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return -1;
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}
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rom->fd = open(filename, O_RDWR);
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if (rom->fd == -1) {
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ERROR("Could not open %s: %m\n", filename);
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rom->fd = 0;
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return -1;
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}
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if (map_rom(rom, s.st_size))
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goto err;
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/* Find the master header */
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offset = ROM_READL(rom, s.st_size - 4);
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rom->header = (struct cbfs_header *)
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ROM_PTR(rom, s.st_size - (0xFFFFFFFF - offset) - 1);
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if (ntohl(rom->header->magic) != HEADER_MAGIC) {
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ERROR("This does not appear to be a valid ROM\n");
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goto err;
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}
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/* Check that the alignment is correct */
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if (ntohl(rom->header->align) == 0) {
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ERROR("The alignment in the ROM is 0 - probably malformed\n");
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goto err;
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}
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/* Sanity check that the size matches the file size */
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if (ntohl(rom->header->romsize) != s.st_size) {
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ERROR("The ROM size in the header does not match the file\n");
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ERROR("ROM size is %d bytes, file size is %d bytes\n",
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ntohl(rom->header->romsize), (unsigned int)s.st_size);
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goto err;
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}
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rom->size = ntohl(rom->header->romsize);
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rom->fssize = rom->size - ntohl(rom->header->bootblocksize);
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return 0;
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err:
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if (rom->ptr != NULL)
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munmap(rom->ptr, s.st_size);
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if (rom->fd > 0)
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close(rom->fd);
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rom->ptr = NULL;
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rom->fd = 0;
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return -1;
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}
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int create_rom(struct rom *rom, const unsigned char *filename,
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int romsize, int bootblocksize, int align)
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{
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unsigned char null = '\0';
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if (rom->fd != 0) {
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ERROR("%s already exists - cannot create\n", filename);
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return -1;
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}
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/* Remember the size of the entire ROM */
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rom->size = romsize;
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/* The size of the archive section is everything but the bootblock */
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rom->fssize = romsize - bootblocksize;
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/* Open the file descriptor */
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rom->fd = open((char *)filename, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if (rom->fd == -1) {
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ERROR("Could not create %s: %m\n", filename);
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return -1;
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}
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/* Size the new file appropriately */
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lseek(rom->fd, romsize - 1, SEEK_SET);
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write(rom->fd, &null, 1);
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if (map_rom(rom, romsize)) {
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close(rom->fd);
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return -1;
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}
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/* Clear the reset vector */
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memset(rom->ptr + rom->size - 16, 0, 16);
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ROM_WRITEL(rom, rom->size - 4,
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0xFFFFFFF0 - sizeof(struct cbfs_header));
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/* This is a pointer to the header for easy access */
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rom->header = (struct cbfs_header *)
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ROM_PTR(rom, rom->size - 16 - sizeof(struct cbfs_header));
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rom->header->magic = htonl(HEADER_MAGIC);
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rom->header->romsize = htonl(romsize);
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rom->header->bootblocksize = htonl(bootblocksize);
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rom->header->align = htonl(align);
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rom->header->offset = htonl(0);
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return 0;
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}
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int add_bootblock(struct rom *rom, const char *filename)
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{
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unsigned int size;
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//unsigned int offset;
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int fd = size_and_open(filename, &size);
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int ret;
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struct cbfs_header tmp;
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if (fd == -1)
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return -1;
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if (size > ntohl(rom->header->bootblocksize)) {
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ERROR("The bootblock size is not correct (%d vs %d)\n",
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size, ntohl(rom->header->bootblocksize));
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return -1;
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}
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/* Copy the current header into a temporary buffer */
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memcpy(&tmp, rom->header, sizeof(struct cbfs_header));
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/* Copy the bootblock into place at the end of the file */
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ret = copy_from_fd(fd, ROM_PTR(rom, rom->size - ntohl(rom->header->bootblocksize)), size);
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close(fd);
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if (ret) {
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ERROR("Unable to add %s to the bootblock\n", filename);
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return -1;
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}
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/* FIXME: This should point to a location defined by coreboot */
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ROM_WRITEL(rom, rom->size - 4,
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0xFFFFFFF0 - sizeof(struct cbfs_header));
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/* This is a pointer to the header for easy access */
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rom->header = (struct cbfs_header *)
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ROM_PTR(rom, rom->size - 16 - sizeof(struct cbfs_header));
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#if 0
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/* Figure out the new location for the header */
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offset = ROM_READL(rom, rom->size - 4);
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rom->header = (struct cbfs_header *)
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ROM_PTR(rom, offset - (0xFFFFFFFF - rom->size));
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#endif
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/* Replace the LAR header */
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memcpy(rom->header, &tmp, sizeof(struct cbfs_header));
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return 0;
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}
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int rom_exists(struct rom *rom)
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{
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if (rom->fd <= 0)
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return 0;
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return 1;
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}
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