diff options
Diffstat (limited to 'package/system')
| -rw-r--r-- | package/system/mtd/src/Makefile | 3 | ||||
| -rw-r--r-- | package/system/mtd/src/mtd.c | 28 | ||||
| -rw-r--r-- | package/system/mtd/src/mtd.h | 1 | ||||
| -rw-r--r-- | package/system/mtd/src/wrgg.c | 190 | ||||
| -rw-r--r-- | package/system/mtd/src/wrgg.h | 20 |
5 files changed, 239 insertions, 3 deletions
diff --git a/package/system/mtd/src/Makefile b/package/system/mtd/src/Makefile index 70c61e58ae..4e39a89315 100644 --- a/package/system/mtd/src/Makefile +++ b/package/system/mtd/src/Makefile @@ -4,7 +4,8 @@ LDFLAGS += -lubox obj = mtd.o jffs2.o crc32.o md5.o obj.seama = seama.o md5.o -obj.ar71xx = trx.o $(obj.seama) +obj.wrgg = wrgg.o md5.o +obj.ar71xx = trx.o $(obj.seama) $(obj.wrgg) obj.brcm = trx.o obj.brcm47xx = $(obj.brcm) obj.bcm53xx = $(obj.brcm) $(obj.seama) diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c index 91e169eb41..e66e647c01 100644 --- a/package/system/mtd/src/mtd.c +++ b/package/system/mtd/src/mtd.c @@ -54,6 +54,7 @@ #define TRX_MAGIC 0x48445230 /* "HDR0" */ #define SEAMA_MAGIC 0x5ea3a417 +#define WRGG03_MAGIC 0x20080321 #if !defined(__BYTE_ORDER) #error "Unknown byte order" @@ -62,9 +63,11 @@ #if __BYTE_ORDER == __BIG_ENDIAN #define cpu_to_be32(x) (x) #define be32_to_cpu(x) (x) +#define le32_to_cpu(x) bswap_32(x) #elif __BYTE_ORDER == __LITTLE_ENDIAN #define cpu_to_be32(x) bswap_32(x) #define be32_to_cpu(x) bswap_32(x) +#define le32_to_cpu(x) (x) #else #error "Unsupported endianness" #endif @@ -73,6 +76,7 @@ enum mtd_image_format { MTD_IMAGE_FORMAT_UNKNOWN, MTD_IMAGE_FORMAT_TRX, MTD_IMAGE_FORMAT_SEAMA, + MTD_IMAGE_FORMAT_WRGG03, }; static char *buf = NULL; @@ -201,6 +205,8 @@ image_check(int imagefd, const char *mtd) imageformat = MTD_IMAGE_FORMAT_TRX; else if (be32_to_cpu(magic) == SEAMA_MAGIC) imageformat = MTD_IMAGE_FORMAT_SEAMA; + else if (le32_to_cpu(magic) == WRGG03_MAGIC) + imageformat = MTD_IMAGE_FORMAT_WRGG03; switch (imageformat) { case MTD_IMAGE_FORMAT_TRX: @@ -209,6 +215,8 @@ image_check(int imagefd, const char *mtd) break; case MTD_IMAGE_FORMAT_SEAMA: break; + case MTD_IMAGE_FORMAT_WRGG03: + break; default: #ifdef target_brcm if (!strcmp(mtd, "firmware")) @@ -677,6 +685,10 @@ resume: if (mtd_fixseama) mtd_fixseama(mtd, 0, 0); break; + case MTD_IMAGE_FORMAT_WRGG03: + if (mtd_fixwrgg) + mtd_fixwrgg(mtd, 0, 0); + break; default: break; } @@ -722,6 +734,10 @@ static void usage(void) fprintf(stderr, " fixseama fix the checksum in a seama header on first boot\n"); } + if (mtd_fixwrgg) { + fprintf(stderr, + " fixwrgg fix the checksum in a wrgg header on first boot\n"); + } fprintf(stderr, "Following options are available:\n" " -q quiet mode (once: no [w] on writing,\n" @@ -739,9 +755,9 @@ static void usage(void) fprintf(stderr, " -o offset offset of the image header in the partition(for fixtrx)\n"); } - if (mtd_fixtrx || mtd_fixseama) { + if (mtd_fixtrx || mtd_fixseama || mtd_fixwrgg) { fprintf(stderr, - " -c datasize amount of data to be used for checksum calculation (for fixtrx / fixseama)\n"); + " -c datasize amount of data to be used for checksum calculation (for fixtrx / fixseama / fixwrgg)\n"); } fprintf(stderr, #ifdef FIS_SUPPORT @@ -782,6 +798,7 @@ int main (int argc, char **argv) CMD_JFFS2WRITE, CMD_FIXTRX, CMD_FIXSEAMA, + CMD_FIXWRGG, CMD_VERIFY, CMD_DUMP, CMD_RESETBC, @@ -896,6 +913,9 @@ int main (int argc, char **argv) } else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) { cmd = CMD_FIXSEAMA; device = argv[1]; + } else if (((strcmp(argv[0], "fixwrgg") == 0) && (argc == 2)) && mtd_fixwrgg) { + cmd = CMD_FIXWRGG; + device = argv[1]; } else if ((strcmp(argv[0], "verify") == 0) && (argc == 3)) { cmd = CMD_VERIFY; imagefile = argv[1]; @@ -992,6 +1012,10 @@ int main (int argc, char **argv) if (mtd_fixseama) mtd_fixseama(device, 0, data_size); break; + case CMD_FIXWRGG: + if (mtd_fixwrgg) + mtd_fixwrgg(device, 0, data_size); + break; } sync(); diff --git a/package/system/mtd/src/mtd.h b/package/system/mtd/src/mtd.h index 9b2e32ffd4..50a42da14b 100644 --- a/package/system/mtd/src/mtd.h +++ b/package/system/mtd/src/mtd.h @@ -27,5 +27,6 @@ extern int trx_fixup(int fd, const char *name) __attribute__ ((weak)); extern int trx_check(int imagefd, const char *mtd, char *buf, int *len) __attribute__ ((weak)); extern int mtd_fixtrx(const char *mtd, size_t offset, size_t data_size) __attribute__ ((weak)); extern int mtd_fixseama(const char *mtd, size_t offset, size_t data_size) __attribute__ ((weak)); +extern int mtd_fixwrgg(const char *mtd, size_t offset, size_t data_size) __attribute__ ((weak)); extern int mtd_resetbc(const char *mtd) __attribute__ ((weak)); #endif /* __mtd_h */ diff --git a/package/system/mtd/src/wrgg.c b/package/system/mtd/src/wrgg.c new file mode 100644 index 0000000000..e0b5ca172d --- /dev/null +++ b/package/system/mtd/src/wrgg.c @@ -0,0 +1,190 @@ +/* + * wrgg.c + * + * Copyright (C) 2005 Mike Baker + * Copyright (C) 2008 Felix Fietkau <nbd@nbd.name> + * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2016 Stijn Tintel <stijn@linux-ipv6.be> + * + * 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 <endian.h> +#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 <arpa/inet.h> + +#include <sys/ioctl.h> +#include <mtd/mtd-user.h> +#include "mtd.h" +#include "wrgg.h" +#include "md5.h" + +#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 +wrgg_fix_md5(struct wrgg03_header *shdr, int fd, size_t data_offset, size_t data_size) +{ + char *buf; + ssize_t res; + MD5_CTX ctx; + unsigned char digest[16]; + int i; + int err = 0; + + buf = malloc(data_size); + if (!buf) { + err = -ENOMEM; + goto err_out; + } + + res = pread(fd, buf, data_size, data_offset); + if (res != data_size) { + perror("pread"); + err = -EIO; + goto err_free; + } + + MD5_Init(&ctx); + MD5_Update(&ctx, (char *)&shdr->offset, sizeof(shdr->offset)); + MD5_Update(&ctx, (char *)&shdr->dev_name, sizeof(shdr->dev_name)); + MD5_Update(&ctx, buf, data_size); + MD5_Final(digest, &ctx); + + if (!memcmp(digest, shdr->digest, sizeof(digest))) { + if (quiet < 2) + fprintf(stderr, "the header is fixed already\n"); + return -1; + } + + if (quiet < 2) { + fprintf(stderr, "new size:%u, new MD5: ", data_size); + for (i = 0; i < sizeof(digest); i++) + fprintf(stderr, "%02x", digest[i]); + + fprintf(stderr, "\n"); + } + + /* update the size in the image */ + shdr->size = htonl(data_size); + + /* update the checksum in the image */ + memcpy(shdr->digest, digest, sizeof(digest)); + +err_free: + free(buf); +err_out: + return err; +} + +int +mtd_fixwrgg(const char *mtd, size_t offset, size_t data_size) +{ + int fd; + char *first_block; + ssize_t res; + size_t block_offset; + size_t data_offset; + struct wrgg03_header *shdr; + + if (quiet < 2) + fprintf(stderr, "Trying to fix WRGG header in %s at 0x%x...\n", + mtd, offset); + + block_offset = offset & ~(erasesize - 1); + offset -= block_offset; + + fd = mtd_check_open(mtd); + if(fd < 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); + exit(1); + } + + if (block_offset + erasesize > mtdsize) { + fprintf(stderr, "Offset too large, device size 0x%x\n", + mtdsize); + exit(1); + } + + first_block = malloc(erasesize); + if (!first_block) { + perror("malloc"); + exit(1); + } + + res = pread(fd, first_block, erasesize, block_offset); + if (res != erasesize) { + perror("pread"); + exit(1); + } + + shdr = (struct wrgg03_header *)(first_block + offset); + if (shdr->magic1 != htonl(STORE32_LE(WRGG03_MAGIC))) { + fprintf(stderr, "magic1 %x\n", shdr->magic1); + fprintf(stderr, "htonl(WRGG03_MAGIC) %x\n", WRGG03_MAGIC); + fprintf(stderr, "No WRGG header found\n"); + exit(1); + } else if (!ntohl(shdr->size)) { + fprintf(stderr, "WRGG entity with empty image\n"); + exit(1); + } + + data_offset = offset + sizeof(struct wrgg03_header); + if (!data_size) + data_size = mtdsize - data_offset; + if (data_size > ntohl(shdr->size)) + data_size = ntohl(shdr->size); + if (wrgg_fix_md5(shdr, fd, data_offset, data_size)) + goto out; + + 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, "Rewriting block at 0x%x\n", block_offset); + + if (pwrite(fd, first_block, erasesize, block_offset) != erasesize) { + fprintf(stderr, "Error writing block (%s)\n", strerror(errno)); + exit(1); + } + + if (quiet < 2) + fprintf(stderr, "Done.\n"); + +out: + close (fd); + sync(); + + return 0; +} diff --git a/package/system/mtd/src/wrgg.h b/package/system/mtd/src/wrgg.h new file mode 100644 index 0000000000..0c4b3677ec --- /dev/null +++ b/package/system/mtd/src/wrgg.h @@ -0,0 +1,20 @@ +#ifndef __wrgg_h +#define __wrgg_h + +#define WRGG03_MAGIC 0x20080321 + +struct wrgg03_header { + char signature[32]; + uint32_t magic1; + uint32_t magic2; + char version[16]; + char model[16]; + uint32_t flag[2]; + uint32_t reserve[2]; + char buildno[16]; + uint32_t size; + uint32_t offset; + char dev_name[32]; + char digest[16]; +} __attribute__ ((packed)); +#endif /* __wrgg_h */ |