diff options
Diffstat (limited to 'tools/firmware-utils')
| -rw-r--r-- | tools/firmware-utils/Makefile | 1 | ||||
| -rw-r--r-- | tools/firmware-utils/src/bcm4908img.c | 997 |
2 files changed, 0 insertions, 998 deletions
diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile index e4a31b6fd0..28f8f0555a 100644 --- a/tools/firmware-utils/Makefile +++ b/tools/firmware-utils/Makefile @@ -28,7 +28,6 @@ define Host/Compile $(call cc,addpattern) $(call cc,asustrx) $(call cc,bcm4908asus,-Wall) - $(call cc,bcm4908img,-Wall) $(call cc,bcm4908kernel,-Wall) $(call cc,buffalo-enc buffalo-lib,-Wall) $(call cc,buffalo-tag buffalo-lib,-Wall) diff --git a/tools/firmware-utils/src/bcm4908img.c b/tools/firmware-utils/src/bcm4908img.c deleted file mode 100644 index 402d317190..0000000000 --- a/tools/firmware-utils/src/bcm4908img.c +++ /dev/null @@ -1,997 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> - */ - -#include <byteswap.h> -#include <endian.h> -#include <errno.h> -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/stat.h> -#include <unistd.h> - -#if !defined(__BYTE_ORDER) -#error "Unknown byte order" -#endif - -#if __BYTE_ORDER == __BIG_ENDIAN -#define cpu_to_le32(x) bswap_32(x) -#define le32_to_cpu(x) bswap_32(x) -#define cpu_to_be32(x) (x) -#define be32_to_cpu(x) (x) -#define cpu_to_le16(x) bswap_16(x) -#define le16_to_cpu(x) bswap_16(x) -#define cpu_to_be16(x) (x) -#define be16_to_cpu(x) (x) -#elif __BYTE_ORDER == __LITTLE_ENDIAN -#define cpu_to_le32(x) (x) -#define le32_to_cpu(x) (x) -#define cpu_to_be32(x) bswap_32(x) -#define be32_to_cpu(x) bswap_32(x) -#define cpu_to_le16(x) (x) -#define le16_to_cpu(x) (x) -#define cpu_to_be16(x) bswap_16(x) -#define be16_to_cpu(x) bswap_16(x) -#else -#error "Unsupported endianness" -#endif - -#define WFI_VERSION 0x00005732 -#define WFI_VERSION_NAND_1MB_DATA 0x00005731 - -#define WFI_NOR_FLASH 1 -#define WFI_NAND16_FLASH 2 -#define WFI_NAND128_FLASH 3 -#define WFI_NAND256_FLASH 4 -#define WFI_NAND512_FLASH 5 -#define WFI_NAND1024_FLASH 6 -#define WFI_NAND2048_FLASH 7 - -#define WFI_FLAG_HAS_PMC 0x1 -#define WFI_FLAG_SUPPORTS_BTRM 0x2 - -#define UBI_EC_HDR_MAGIC 0x55424923 - -static int debug; - -struct bcm4908img_tail { - uint32_t crc32; - uint32_t version; - uint32_t chip_id; - uint32_t flash_type; - uint32_t flags; -}; - -/** - * struct bcm4908img_info - info about BCM4908 image - * - * Standard BCM4908 image consists of: - * 1. (Optional) vedor header - * 2. (Optional) cferom - * 3. bootfs ─┐ - * 4. padding ├─ firmware - * 5. rootfs ─┘ - * 6. BCM4908 tail - */ -struct bcm4908img_info { - size_t file_size; - size_t cferom_offset; - size_t bootfs_offset; - size_t padding_offset; - size_t rootfs_offset; - uint32_t crc32; /* Calculated checksum */ - struct bcm4908img_tail tail; -}; - -char *pathname; - -static inline size_t bcm4908img_min(size_t x, size_t y) { - return x < y ? x : y; -} - -/************************************************** - * CRC32 - **************************************************/ - -static const uint32_t crc32_tbl[] = { - 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, - 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, - 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, - 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, - 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, - 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, - 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, - 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, - 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, - 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, - 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, - 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, - 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, - 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, - 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, - 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, - 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, - 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, - 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, - 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, - 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, - 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, - 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, - 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, - 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, - 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, - 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, - 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, - 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, - 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, - 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, - 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, - 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, - 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, - 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, - 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, - 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, - 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, - 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, - 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, - 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, - 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, - 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, - 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, - 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, - 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, - 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, - 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, - 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, - 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, - 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, - 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, - 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, - 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, - 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, - 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, - 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, - 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, - 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, - 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, - 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, - 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, - 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, - 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, -}; - -uint32_t bcm4908img_crc32(uint32_t crc, const void *buf, size_t len) { - const uint8_t *in = buf; - - while (len) { - crc = crc32_tbl[(crc ^ *in) & 0xff] ^ (crc >> 8); - in++; - len--; - } - - return crc; -} - -/************************************************** - * Helpers - **************************************************/ - -static FILE *bcm4908img_open(const char *pathname, const char *mode) { - struct stat st; - - if (pathname) - return fopen(pathname, mode); - - if (isatty(fileno(stdin))) { - fprintf(stderr, "Reading from TTY stdin is unsupported\n"); - return NULL; - } - - if (fstat(fileno(stdin), &st)) { - fprintf(stderr, "Failed to fstat stdin: %d\n", -errno); - return NULL; - } - - if (S_ISFIFO(st.st_mode)) { - fprintf(stderr, "Reading from pipe stdin is unsupported\n"); - return NULL; - } - - return stdin; -} - -static void bcm4908img_close(FILE *fp) { - if (fp != stdin) - fclose(fp); -} - -static int bcm4908img_calc_crc32(FILE *fp, struct bcm4908img_info *info) { - uint8_t buf[1024]; - size_t length; - size_t bytes; - - /* Start with cferom (or bootfs) - skip vendor header */ - fseek(fp, info->cferom_offset, SEEK_SET); - - info->crc32 = 0xffffffff; - length = info->file_size - info->cferom_offset - sizeof(struct bcm4908img_tail); - while (length && (bytes = fread(buf, 1, bcm4908img_min(sizeof(buf), length), fp)) > 0) { - info->crc32 = bcm4908img_crc32(info->crc32, buf, bytes); - length -= bytes; - } - if (length) { - fprintf(stderr, "Failed to read last %zd B of data\n", length); - return -EIO; - } - - return 0; -} - -/************************************************** - * Existing firmware parser - **************************************************/ - -struct chk_header { - uint32_t magic; - uint32_t header_len; - uint8_t reserved[8]; - uint32_t kernel_chksum; - uint32_t rootfs_chksum; - uint32_t kernel_len; - uint32_t rootfs_len; - uint32_t image_chksum; - uint32_t header_chksum; - char board_id[0]; -}; - -static bool bcm4908img_is_all_ff(const void *buf, size_t length) -{ - const uint8_t *in = buf; - int i; - - for (i = 0; i < length; i++) { - if (in[i] != 0xff) - return false; - } - - return true; -} - -static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) { - struct bcm4908img_tail *tail = &info->tail; - struct chk_header *chk; - struct stat st; - uint8_t buf[1024]; - uint16_t tmp16; - size_t length; - size_t bytes; - int err = 0; - - memset(info, 0, sizeof(*info)); - - /* File size */ - - if (fstat(fileno(fp), &st)) { - err = -errno; - fprintf(stderr, "Failed to fstat: %d\n", err); - return err; - } - info->file_size = st.st_size; - - /* Vendor formats */ - - rewind(fp); - if (fread(buf, 1, sizeof(buf), fp) != sizeof(buf)) { - fprintf(stderr, "Failed to read file header\n"); - return -EIO; - } - chk = (void *)buf; - if (be32_to_cpu(chk->magic) == 0x2a23245e) - info->cferom_offset = be32_to_cpu(chk->header_len); - - /* Offsets */ - - for (info->bootfs_offset = info->cferom_offset; - info->bootfs_offset < info->file_size; - info->bootfs_offset += 0x20000) { - if (fseek(fp, info->bootfs_offset, SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek to the 0x%zx\n", info->bootfs_offset); - return err; - } - if (fread(&tmp16, 1, sizeof(tmp16), fp) != sizeof(tmp16)) { - fprintf(stderr, "Failed to read while looking for JFFS2\n"); - return -EIO; - } - if (be16_to_cpu(tmp16) == 0x8519) - break; - } - if (info->bootfs_offset >= info->file_size) { - fprintf(stderr, "Failed to find bootfs offset\n"); - return -EPROTO; - } - - for (info->rootfs_offset = info->bootfs_offset; - info->rootfs_offset < info->file_size; - info->rootfs_offset += 0x20000) { - uint32_t *magic = (uint32_t *)&buf[0]; - - if (fseek(fp, info->rootfs_offset, SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek: %d\n", err); - return err; - } - - length = info->padding_offset ? sizeof(*magic) : 256; - bytes = fread(buf, 1, length, fp); - if (bytes != length) { - fprintf(stderr, "Failed to read %zu bytes\n", length); - return -EIO; - } - - if (!info->padding_offset && bcm4908img_is_all_ff(buf, length)) - info->padding_offset = info->rootfs_offset; - - if (be32_to_cpu(*magic) == UBI_EC_HDR_MAGIC) - break; - } - if (info->rootfs_offset >= info->file_size) { - fprintf(stderr, "Failed to find rootfs offset\n"); - return -EPROTO; - } - - /* CRC32 */ - - /* Start with cferom (or bootfs) - skip vendor header */ - fseek(fp, info->cferom_offset, SEEK_SET); - - info->crc32 = 0xffffffff; - length = info->file_size - info->cferom_offset - sizeof(*tail); - while (length && (bytes = fread(buf, 1, bcm4908img_min(sizeof(buf), length), fp)) > 0) { - info->crc32 = bcm4908img_crc32(info->crc32, buf, bytes); - length -= bytes; - } - if (length) { - fprintf(stderr, "Failed to read last %zd B of data\n", length); - return -EIO; - } - - /* Tail */ - - if (fread(tail, 1, sizeof(*tail), fp) != sizeof(*tail)) { - fprintf(stderr, "Failed to read BCM4908 image tail\n"); - return -EIO; - } - - /* Standard validation */ - - if (info->crc32 != le32_to_cpu(tail->crc32)) { - fprintf(stderr, "Invalid data crc32: 0x%08x instead of 0x%08x\n", info->crc32, le32_to_cpu(tail->crc32)); - return -EPROTO; - } - - return 0; -} - -/************************************************** - * Info - **************************************************/ - -static int bcm4908img_info(int argc, char **argv) { - struct bcm4908img_info info; - const char *pathname = NULL; - FILE *fp; - int c; - int err = 0; - - while ((c = getopt(argc, argv, "i:")) != -1) { - switch (c) { - case 'i': - pathname = optarg; - break; - } - } - - fp = bcm4908img_open(pathname, "r"); - if (!fp) { - fprintf(stderr, "Failed to open BCM4908 image\n"); - err = -EACCES; - goto out; - } - - err = bcm4908img_parse(fp, &info); - if (err) { - fprintf(stderr, "Failed to parse BCM4908 image\n"); - goto err_close; - } - - if (info.bootfs_offset != info.cferom_offset) - printf("cferom offset:\t%zu\n", info.cferom_offset); - printf("bootfs offset:\t0x%zx\n", info.bootfs_offset); - if (info.padding_offset) - printf("padding offset:\t0x%zx\n", info.padding_offset); - printf("rootfs offset:\t0x%zx\n", info.rootfs_offset); - printf("Checksum:\t0x%08x\n", info.crc32); - -err_close: - bcm4908img_close(fp); -out: - return err; -} - -/************************************************** - * Create - **************************************************/ - -static ssize_t bcm4908img_create_append_file(FILE *trx, const char *in_path, uint32_t *crc32) { - FILE *in; - size_t bytes; - ssize_t length = 0; - uint8_t buf[1024]; - - in = fopen(in_path, "r"); - if (!in) { - fprintf(stderr, "Failed to open %s\n", in_path); - return -EACCES; - } - - while ((bytes = fread(buf, 1, sizeof(buf), in)) > 0) { - if (fwrite(buf, 1, bytes, trx) != bytes) { - fprintf(stderr, "Failed to write %zu B to %s\n", bytes, pathname); - length = -EIO; - break; - } - *crc32 = bcm4908img_crc32(*crc32, buf, bytes); - length += bytes; - } - - fclose(in); - - return length; -} - -static ssize_t bcm4908img_create_append_zeros(FILE *trx, size_t length) { - uint8_t *buf; - - buf = malloc(length); - if (!buf) - return -ENOMEM; - memset(buf, 0, length); - - if (fwrite(buf, 1, length, trx) != length) { - fprintf(stderr, "Failed to write %zu B to %s\n", length, pathname); - free(buf); - return -EIO; - } - - free(buf); - - return length; -} - -static ssize_t bcm4908img_create_align(FILE *trx, size_t cur_offset, size_t alignment) { - if (cur_offset & (alignment - 1)) { - size_t length = alignment - (cur_offset % alignment); - return bcm4908img_create_append_zeros(trx, length); - } - - return 0; -} - -static int bcm4908img_create(int argc, char **argv) { - struct bcm4908img_tail tail = { - .version = cpu_to_le32(WFI_VERSION), - .chip_id = cpu_to_le32(0x4908), - .flash_type = cpu_to_le32(WFI_NAND128_FLASH), - .flags = cpu_to_le32(WFI_FLAG_SUPPORTS_BTRM), - }; - uint32_t crc32 = 0xffffffff; - size_t cur_offset = 0; - ssize_t bytes; - FILE *fp; - int c; - int err = 0; - - if (argc < 3) { - fprintf(stderr, "No BCM4908 image pathname passed\n"); - err = -EINVAL; - goto out; - } - pathname = argv[2]; - - fp = fopen(pathname, "w+"); - if (!fp) { - fprintf(stderr, "Failed to open %s\n", pathname); - err = -EACCES; - goto out; - } - - optind = 3; - while ((c = getopt(argc, argv, "f:a:A:")) != -1) { - switch (c) { - case 'f': - bytes = bcm4908img_create_append_file(fp, optarg, &crc32); - if (bytes < 0) { - fprintf(stderr, "Failed to append file %s\n", optarg); - } else { - cur_offset += bytes; - } - break; - case 'a': - bytes = bcm4908img_create_align(fp, cur_offset, strtol(optarg, NULL, 0)); - if (bytes < 0) - fprintf(stderr, "Failed to append zeros\n"); - else - cur_offset += bytes; - break; - case 'A': - bytes = strtol(optarg, NULL, 0) - cur_offset; - if (bytes < 0) { - fprintf(stderr, "Current BCM4908 image length is 0x%zx, can't pad it with zeros to 0x%lx\n", cur_offset, strtol(optarg, NULL, 0)); - } else { - bytes = bcm4908img_create_append_zeros(fp, bytes); - if (bytes < 0) - fprintf(stderr, "Failed to append zeros\n"); - else - cur_offset += bytes; - } - break; - } - if (err) - goto err_close; - } - - tail.crc32 = cpu_to_le32(crc32); - - bytes = fwrite(&tail, 1, sizeof(tail), fp); - if (bytes != sizeof(tail)) { - fprintf(stderr, "Failed to write BCM4908 image tail to %s\n", pathname); - return -EIO; - } - -err_close: - fclose(fp); -out: - return err; -} - -/************************************************** - * Extract - **************************************************/ - -static int bcm4908img_extract(int argc, char **argv) { - struct bcm4908img_info info; - const char *pathname = NULL; - const char *type = NULL; - uint8_t buf[1024]; - size_t offset; - size_t length; - size_t bytes; - FILE *fp; - int c; - int err = 0; - - while ((c = getopt(argc, argv, "i:t:")) != -1) { - switch (c) { - case 'i': - pathname = optarg; - break; - case 't': - type = optarg; - break; - } - } - - fp = bcm4908img_open(pathname, "r"); - if (!fp) { - fprintf(stderr, "Failed to open BCM4908 image\n"); - err = -EACCES; - goto err_out; - } - - err = bcm4908img_parse(fp, &info); - if (err) { - fprintf(stderr, "Failed to parse BCM4908 image\n"); - goto err_close; - } - - if (!type) { - err = -EINVAL; - fprintf(stderr, "No data to extract specified\n"); - goto err_close; - } else if (!strcmp(type, "cferom")) { - offset = info.cferom_offset; - length = info.bootfs_offset - offset; - if (!length) { - err = -ENOENT; - fprintf(stderr, "This BCM4908 image doesn't contain cferom\n"); - goto err_close; - } - } else if (!strcmp(type, "bootfs")) { - offset = info.bootfs_offset; - length = (info.padding_offset ? info.padding_offset : info.rootfs_offset) - offset; - } else if (!strcmp(type, "rootfs")) { - offset = info.rootfs_offset; - length = info.file_size - offset - sizeof(struct bcm4908img_tail); - } else if (!strcmp(type, "firmware")) { - offset = info.bootfs_offset; - length = info.file_size - offset - sizeof(struct bcm4908img_tail); - } else { - err = -EINVAL; - fprintf(stderr, "Unsupported extract type: %s\n", type); - goto err_close; - } - - if (!length) { - err = -EINVAL; - fprintf(stderr, "Failed to find requested data in input image\n"); - goto err_close; - } - - fseek(fp, offset, SEEK_SET); - while (length && (bytes = fread(buf, 1, bcm4908img_min(sizeof(buf), length), fp)) > 0) { - fwrite(buf, bytes, 1, stdout); - length -= bytes; - } - if (length) { - err = -EIO; - fprintf(stderr, "Failed to read last %zd B of data\n", length); - goto err_close; - } - -err_close: - bcm4908img_close(fp); -err_out: - return err; -} - -/************************************************** - * bootfs - **************************************************/ - -#define JFFS2_MAGIC_BITMASK 0x1985 - -#define JFFS2_COMPR_NONE 0x00 -#define JFFS2_COMPR_ZERO 0x01 -#define JFFS2_COMPR_RTIME 0x02 -#define JFFS2_COMPR_RUBINMIPS 0x03 -#define JFFS2_COMPR_COPY 0x04 -#define JFFS2_COMPR_DYNRUBIN 0x05 -#define JFFS2_COMPR_ZLIB 0x06 -#define JFFS2_COMPR_LZO 0x07 -/* Compatibility flags. */ -#define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */ -#define JFFS2_NODE_ACCURATE 0x2000 -/* INCOMPAT: Fail to mount the filesystem */ -#define JFFS2_FEATURE_INCOMPAT 0xc000 -/* ROCOMPAT: Mount read-only */ -#define JFFS2_FEATURE_ROCOMPAT 0x8000 -/* RWCOMPAT_COPY: Mount read/write, and copy the node when it's GC'd */ -#define JFFS2_FEATURE_RWCOMPAT_COPY 0x4000 -/* RWCOMPAT_DELETE: Mount read/write, and delete the node when it's GC'd */ -#define JFFS2_FEATURE_RWCOMPAT_DELETE 0x0000 - -#define JFFS2_NODETYPE_DIRENT (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 1) - -typedef struct { - uint32_t v32; -} __attribute__((packed)) jint32_t; - -typedef struct { - uint16_t v16; -} __attribute__((packed)) jint16_t; - -struct jffs2_unknown_node -{ - /* All start like this */ - jint16_t magic; - jint16_t nodetype; - jint32_t totlen; /* So we can skip over nodes we don't grok */ - jint32_t hdr_crc; -}; - -struct jffs2_raw_dirent -{ - jint16_t magic; - jint16_t nodetype; /* == JFFS2_NODETYPE_DIRENT */ - jint32_t totlen; - jint32_t hdr_crc; - jint32_t pino; - jint32_t version; - jint32_t ino; /* == zero for unlink */ - jint32_t mctime; - uint8_t nsize; - uint8_t type; - uint8_t unused[2]; - jint32_t node_crc; - jint32_t name_crc; - uint8_t name[0]; -}; - -#define je16_to_cpu(x) ((x).v16) -#define je32_to_cpu(x) ((x).v32) - -static int bcm4908img_bootfs_ls(FILE *fp, struct bcm4908img_info *info) { - struct jffs2_unknown_node node; - struct jffs2_raw_dirent dirent; - size_t offset; - size_t bytes; - int err = 0; - - for (offset = info->bootfs_offset; ; offset += (je32_to_cpu(node.totlen) + 0x03) & ~0x03) { - char name[FILENAME_MAX + 1]; - - if (fseek(fp, offset, SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek: %d\n", err); - return err; - } - - bytes = fread(&node, 1, sizeof(node), fp); - if (bytes != sizeof(node)) { - fprintf(stderr, "Failed to read %zu bytes\n", sizeof(node)); - return -EIO; - } - - if (je16_to_cpu(node.magic) != JFFS2_MAGIC_BITMASK) { - break; - } - - if (je16_to_cpu(node.nodetype) != JFFS2_NODETYPE_DIRENT) { - continue; - } - - memcpy(&dirent, &node, sizeof(node)); - bytes += fread((uint8_t *)&dirent + sizeof(node), 1, sizeof(dirent) - sizeof(node), fp); - if (bytes != sizeof(dirent)) { - fprintf(stderr, "Failed to read %zu bytes\n", sizeof(node)); - return -EIO; - } - - if (dirent.nsize + 1 > sizeof(name)) { - /* Keep reading & printing BUT exit with error code */ - fprintf(stderr, "Too long filename\n"); - err = -ENOMEM; - continue; - } - - bytes = fread(name, 1, dirent.nsize, fp); - if (bytes != dirent.nsize) { - fprintf(stderr, "Failed to read filename\n"); - return -EIO; - } - name[bytes] = '\0'; - - printf("%s\n", name); - } - - return err; -} - -static int bcm4908img_bootfs_mv(FILE *fp, struct bcm4908img_info *info, int argc, char **argv) { - struct jffs2_unknown_node node; - struct jffs2_raw_dirent dirent; - const char *oldname; - const char *newname; - size_t offset; - size_t bytes; - int err = -ENOENT; - - if (argc - optind < 2) { - fprintf(stderr, "No enough arguments passed\n"); - return -EINVAL; - } - oldname = argv[optind++]; - newname = argv[optind++]; - - if (strlen(newname) != strlen(oldname)) { - fprintf(stderr, "New filename must have the same length as the old one\n"); - return -EINVAL; - } - - for (offset = info->bootfs_offset; ; offset += (je32_to_cpu(node.totlen) + 0x03) & ~0x03) { - char name[FILENAME_MAX]; - uint32_t crc32; - - if (fseek(fp, offset, SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek: %d\n", err); - return err; - } - - bytes = fread(&node, 1, sizeof(node), fp); - if (bytes != sizeof(node)) { - fprintf(stderr, "Failed to read %zu bytes\n", sizeof(node)); - return -EIO; - } - - if (je16_to_cpu(node.magic) != JFFS2_MAGIC_BITMASK) { - break; - } - - if (je16_to_cpu(node.nodetype) != JFFS2_NODETYPE_DIRENT) { - continue; - } - - bytes += fread((uint8_t *)&dirent + sizeof(node), 1, sizeof(dirent) - sizeof(node), fp); - if (bytes != sizeof(dirent)) { - fprintf(stderr, "Failed to read %zu bytes\n", sizeof(node)); - return -EIO; - } - - if (dirent.nsize + 1 > sizeof(name)) { - fprintf(stderr, "Too long filename\n"); - err = -ENOMEM; - continue; - } - - bytes = fread(name, 1, dirent.nsize, fp); - if (bytes != dirent.nsize) { - fprintf(stderr, "Failed to read filename\n"); - return -EIO; - } - name[bytes] = '\0'; - - if (debug) - printf("offset:%08zx name_crc:%04x filename:%s\n", offset, je32_to_cpu(dirent.name_crc), name); - - if (strcmp(name, oldname)) { - continue; - } - - if (fseek(fp, offset + offsetof(struct jffs2_raw_dirent, name_crc), SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek: %d\n", err); - return err; - } - crc32 = bcm4908img_crc32(0, newname, dirent.nsize); - bytes = fwrite(&crc32, 1, sizeof(crc32), fp); - if (bytes != sizeof(crc32)) { - fprintf(stderr, "Failed to write new CRC32\n"); - return -EIO; - } - - if (fseek(fp, offset + offsetof(struct jffs2_raw_dirent, name), SEEK_SET)) { - err = -errno; - fprintf(stderr, "Failed to fseek: %d\n", err); - return err; - } - bytes = fwrite(newname, 1, dirent.nsize, fp); - if (bytes != dirent.nsize) { - fprintf(stderr, "Failed to write new filename\n"); - return -EIO; - } - - /* Calculate new BCM4908 image checksum */ - - err = bcm4908img_calc_crc32(fp, info); - if (err) { - fprintf(stderr, "Failed to write new filename\n"); - return err; - } - - info->tail.crc32 = cpu_to_le32(info->crc32); - if (fseek(fp, -sizeof(struct bcm4908img_tail), SEEK_END)) { - err = -errno; - fprintf(stderr, "Failed to write new filename\n"); - return err; - } - - if (fwrite(&info->tail, 1, sizeof(struct bcm4908img_tail), fp) != sizeof(struct bcm4908img_tail)) { - fprintf(stderr, "Failed to write updated tail\n"); - return -EIO; - } - - printf("Successfully renamed %s to the %s\n", oldname, newname); - - return 0; - } - - fprintf(stderr, "Failed to find %s\n", oldname); - - return -ENOENT; -} - -static int bcm4908img_bootfs(int argc, char **argv) { - struct bcm4908img_info info; - const char *pathname = NULL; - const char *mode; - const char *cmd; - FILE *fp; - int c; - int err = 0; - - while ((c = getopt(argc, argv, "i:")) != -1) { - switch (c) { - case 'i': - pathname = optarg; - break; - } - } - - if (argc - optind < 1) { - fprintf(stderr, "No bootfs command specified\n"); - err = -EINVAL; - goto out; - } - cmd = argv[optind++]; - - mode = strcmp(cmd, "mv") ? "r" : "r+"; - fp = bcm4908img_open(pathname, mode); - if (!fp) { - fprintf(stderr, "Failed to open BCM4908 image\n"); - err = -EACCES; - goto out; - } - - err = bcm4908img_parse(fp, &info); - if (err) { - fprintf(stderr, "Failed to parse BCM4908 image\n"); - goto err_close; - } - - if (!strcmp(cmd, "ls")) { - err = bcm4908img_bootfs_ls(fp, &info); - } else if (!strcmp(cmd, "mv")) { - err = bcm4908img_bootfs_mv(fp, &info, argc, argv); - } else { - err = -EINVAL; - fprintf(stderr, "Unsupported bootfs command: %s\n", cmd); - } - -err_close: - bcm4908img_close(fp); -out: - return err; -} - -/************************************************** - * Start - **************************************************/ - -static void usage() { - printf("Usage:\n"); - printf("\n"); - printf("Info about a BCM4908 image:\n"); - printf("\tbcm4908img info <options>\n"); - printf("\t-i <file>\t\t\t\tinput BCM490 image\n"); - printf("\n"); - printf("Creating a new BCM4908 image:\n"); - printf("\tbcm4908img create <file> [options]\n"); - printf("\t-f file\t\t\t\tadd data from specified file\n"); - printf("\t-a alignment\t\t\tpad image with zeros to specified alignment\n"); - printf("\t-A offset\t\t\t\tappend zeros until reaching specified offset\n"); - printf("\n"); - printf("Extracting from a BCM4908 image:\n"); - printf("\tbcm4908img extract <options>\n"); - printf("\t-i <file>\t\t\t\tinput BCM490 image\n"); - printf("\t-t <type>\t\t\t\tone of: cferom, bootfs, rootfs, firmware\n"); - printf("\n"); - printf("Access bootfs in a BCM4908 image:\n"); - printf("\tbcm4908img bootfs <options> <command> <arguments>\n"); - printf("\t-i <file>\t\t\t\tinput BCM490 image\n"); - printf("\tls\t\t\t\t\tlist bootfs files\n"); - printf("\tmv <source> <dest>\t\t\trename bootfs file\n"); -} - -int main(int argc, char **argv) { - if (argc > 1) { - optind++; - if (!strcmp(argv[1], "info")) - return bcm4908img_info(argc, argv); - else if (!strcmp(argv[1], "create")) - return bcm4908img_create(argc, argv); - else if (!strcmp(argv[1], "extract")) - return bcm4908img_extract(argc, argv); - else if (!strcmp(argv[1], "bootfs")) - return bcm4908img_bootfs(argc, argv); - } - - usage(); - return 0; -} |