diff options
Diffstat (limited to 'package/mtd/src/trx.c')
| -rw-r--r-- | package/mtd/src/trx.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/package/mtd/src/trx.c b/package/mtd/src/trx.c deleted file mode 100644 index 65c24404c2..0000000000 --- a/package/mtd/src/trx.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * trx.c - * - * Copyright (C) 2005 Mike Baker - * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org> - * - * This program 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 program 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 program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <string.h> -#include <errno.h> - -#include <sys/ioctl.h> -#include <mtd/mtd-user.h> -#include "mtd.h" -#include "crc32.h" - -#define TRX_MAGIC 0x30524448 /* "HDR0" */ -struct trx_header { - uint32_t magic; /* "HDR0" */ - uint32_t len; /* Length of file including header */ - uint32_t crc32; /* 32-bit CRC from flag_version to end of file */ - uint32_t flag_version; /* 0:15 flags, 16:31 version */ - uint32_t offsets[3]; /* Offsets of partitions from start of header */ -}; - -#if __BYTE_ORDER == __BIG_ENDIAN -#define STORE32_LE(X) ((((X) & 0x000000FF) << 24) | (((X) & 0x0000FF00) << 8) | (((X) & 0x00FF0000) >> 8) | (((X) & 0xFF000000) >> 24)) -#elif __BYTE_ORDER == __LITTLE_ENDIAN -#define STORE32_LE(X) (X) -#else -#error unknown endianness! -#endif - -ssize_t pread(int fd, void *buf, size_t count, off_t offset); -ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset); - -int -trx_fixup(int fd, const char *name) -{ - struct mtd_info_user mtdInfo; - unsigned long len; - struct trx_header *trx; - void *ptr, *scan; - int bfd; - - if (ioctl(fd, MEMGETINFO, &mtdInfo) < 0) { - fprintf(stderr, "Failed to get mtd info\n"); - goto err; - } - - len = mtdInfo.size; - if (mtdInfo.size <= 0) { - fprintf(stderr, "Invalid MTD device size\n"); - goto err; - } - - bfd = mtd_open(name, true); - ptr = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, bfd, 0); - if (!ptr || (ptr == (void *) -1)) { - perror("mmap"); - goto err1; - } - - trx = ptr; - if (trx->magic != TRX_MAGIC) { - fprintf(stderr, "TRX header not found\n"); - goto err; - } - - scan = ptr + offsetof(struct trx_header, flag_version); - trx->crc32 = crc32buf(scan, trx->len - (scan - ptr)); - msync(ptr, sizeof(struct trx_header), MS_SYNC|MS_INVALIDATE); - munmap(ptr, len); - close(bfd); - return 0; - -err1: - close(bfd); -err: - fprintf(stderr, "Error fixing up TRX header\n"); - return -1; -} - -int -trx_check(int imagefd, const char *mtd, char *buf, int *len) -{ - const struct trx_header *trx = (const struct trx_header *) buf; - int fd; - - if (strcmp(mtd, "linux") != 0) - return 1; - - *len = read(imagefd, buf, 32); - if (*len < 32) { - fprintf(stdout, "Could not get image header, file too small (%d bytes)\n", *len); - return 0; - } - - if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) { - if (quiet < 2) { - fprintf(stderr, "Bad trx header\n"); - fprintf(stderr, "This is not the correct file format; refusing to flash.\n" - "Please specify the correct file or use -f to force.\n"); - } - return 0; - } - - /* check if image fits to mtd device */ - fd = mtd_check_open(mtd); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); - exit(1); - } - - if(mtdsize < trx->len) { - fprintf(stderr, "Image too big for partition: %s\n", mtd); - close(fd); - return 0; - } - - close(fd); - return 1; -} - -int -mtd_fixtrx(const char *mtd, size_t offset) -{ - int fd; - struct trx_header *trx; - char *buf; - ssize_t res; - size_t block_offset; - - if (quiet < 2) - fprintf(stderr, "Trying to fix trx header in %s at 0x%x...\n", mtd, offset); - - fd = mtd_check_open(mtd); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); - exit(1); - } - - block_offset = offset & ~(erasesize - 1); - offset -= block_offset; - - if (block_offset + erasesize > mtdsize) { - fprintf(stderr, "Offset too large, device size 0x%x\n", mtdsize); - exit(1); - } - - buf = malloc(erasesize); - if (!buf) { - perror("malloc"); - exit(1); - } - - res = pread(fd, buf, erasesize, block_offset); - if (res != erasesize) { - perror("pread"); - exit(1); - } - - trx = (struct trx_header *) (buf + offset); - if (trx->magic != STORE32_LE(0x30524448)) { - fprintf(stderr, "No trx magic found\n"); - exit(1); - } - - if (trx->len == STORE32_LE(erasesize - offset)) { - if (quiet < 2) - fprintf(stderr, "Header already fixed, exiting\n"); - close(fd); - return 0; - } - - trx->len = STORE32_LE(erasesize - offset); - - trx->crc32 = STORE32_LE(crc32buf((char*) &trx->flag_version, erasesize - offset - 3*4)); - if (mtd_erase_block(fd, block_offset)) { - fprintf(stderr, "Can't erease block at 0x%x (%s)\n", block_offset, strerror(errno)); - exit(1); - } - - if (quiet < 2) - fprintf(stderr, "New crc32: 0x%x, rewriting block\n", trx->crc32); - - if (pwrite(fd, buf, erasesize, block_offset) != erasesize) { - fprintf(stderr, "Error writing block (%s)\n", strerror(errno)); - exit(1); - } - - if (quiet < 2) - fprintf(stderr, "Done.\n"); - - close (fd); - sync(); - return 0; - -} - |