/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2008 Axel Gembe * Copyright (C) 2009 Daniel Dickinson */ #include #include #include #include #include #include #include #include #define IMAGE_LEN 10 /* Length of Length Field */ #define ADDRESS_LEN 12 /* Length of Address field */ #define TAGID_LEN 6 /* Length of tag ID */ #define TAGINFO_LEN 20 /* Length of vendor information field in tag */ #define TAGVER_LEN 4 /* Length of Tag Version */ #define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */ #define NUM_TAGID 5 #define IMAGETAG_CRC_START 0xFFFFFFFF struct tagiddesc_t { char tagid[TAGID_LEN + 1]; char tagiddesc[80]; }; // bc221 is used by BT Voyager and should be right // bc310 should be right, and may apply to 3.08 code as well #define TAGID_DEFINITIONS { \ { "bccfe", "Broadcom CFE flash image" }, \ { "bc300", "Broadcom code version 3.00-3.06 and all ftp/tftp flash" }, \ { "ag306", "Alice Gate (Pirelli, based on Broadcom 3.06)" }, \ { "bc221", "Broadcom code version 2.21" }, \ { "bc310", "Broadcom code version 3.10-3.12" }, \ } struct bcm_tag_bccfe { unsigned char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag unsigned char sig_1[20]; // 4-23: Company Line 1 unsigned char sig_2[14]; // 24-37: Company Line 2 unsigned char chipid[6]; // 38-43: Chip this image is for unsigned char boardid[16]; // 44-59: Board name unsigned char big_endian[2]; // 60-61: Map endianness -- 1 BE 0 LE unsigned char totalLength[IMAGE_LEN]; // 62-71: Total length of image unsigned char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE unsigned char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE unsigned char rootAddress[ADDRESS_LEN]; // 94-105: Address in memory of rootfs unsigned char rootLength[IMAGE_LEN]; // 106-115: Size of rootfs unsigned char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel unsigned char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel unsigned char dualImage[2]; // 138-139: Unused at present unsigned char inactiveFlag[2]; // 140-141: Unused at present unsigned char information1[TAGINFO_LEN]; // 142-161: Unused at present unsigned char tagId[TAGID_LEN]; // 162-167: Identifies which type of tag this is, currently two-letter company code, and then three digits for version of broadcom code in which this tag was first introduced unsigned char tagIdCRC[4]; // 168-171: CRC32 of tagId unsigned char reserved1[44]; // 172-215: Reserved area not in use unsigned char imageCRC[4]; // 216-219: CRC32 of images unsigned char reserved2[16]; // 220-235: Unused at present unsigned char headerCRC[4]; // 236-239: CRC32 of header excluding tagVersion unsigned char reserved3[16]; // 240-255: Unused at present }; struct bcm_tag_bc300 { unsigned char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag unsigned char sig_1[20]; // 4-23: Company Line 1 unsigned char sig_2[14]; // 24-37: Company Line 2 unsigned char chipid[6]; // 38-43: Chip this image is for unsigned char boardid[16]; // 44-59: Board name unsigned char big_endian[2]; // 60-61: Map endianness -- 1 BE 0 LE unsigned char totalLength[IMAGE_LEN]; // 62-71: Total length of image unsigned char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE unsigned char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE unsigned char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of kernel (start of image) unsigned char flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs + deadcode (web flash uses this + kernelLength to determine the size of the kernel+rootfs flash image) unsigned char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel unsigned char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel unsigned char dualImage[2]; // 138-139: Unused at present unsigned char inactiveFlag[2]; // 140-141: Unused at present unsigned char information1[TAGINFO_LEN]; // 142-161: Unused at present unsigned char tagId[TAGID_LEN]; // 162-167: Identifies which type of tag this is, currently two-letter company code, and then three digits for version of broadcom code in which this tag was first introduced unsigned char tagIdCRC[4]; // 168-173: CRC32 to ensure validity of tagId unsigned char rootAddress[ADDRESS_LEN]; // 174-183: Address in memory of rootfs partition unsigned char rootLength[IMAGE_LEN]; // 184-193: Size of rootfs partition unsigned char reserved1[22]; // 194-215: Reserved area not in use unsigned char imageCRC[4]; // 216-219: CRC32 of images unsigned char reserved2[16]; // 220-235: Unused at present unsigned char headerCRC[4]; // 236-239: CRC32 of header excluding tagVersion unsigned char reserved3[16]; // 240-255: Unused at present }; struct bcm_tag_ag306 { unsigned char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag unsigned char sig_1[20]; // 4-23: Company Line 1 unsigned char sig_2[14]; // 24-37: Company Line 2 unsigned char chipid[6]; // 38-43: Chip this image is for unsigned char boardid[16]; // 44-59: Board name unsigned char big_endian[2]; // 60-61: Map endianness -- 1 BE 0 LE unsigned char totalLength[IMAGE_LEN]; // 62-71: Total length of image unsigned char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE unsigned char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE unsigned char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of kernel (start of image) unsigned char flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs + deadcode (web flash uses this + kernelLength to determine the size of the kernel+rootfs flash image) unsigned char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel unsigned char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel unsigned char dualImage[2]; // 138-139: Unused at present unsigned char inactiveFlag[2]; // 140-141: Unused at present unsigned char information1[TAGINFO_LEN]; // 142-161: Unused at present unsigned char information2[54]; // 162-215: Compilation and related information (not generated/used by OpenWRT) unsigned char kernelCRC[4] ; // 216-219: CRC32 of images unsigned char rootAddress[ADDRESS_LEN]; // 220-231: Address in memory of rootfs partition unsigned char tagIdCRC[4]; // 232-235: Checksum to ensure validity of tagId unsigned char headerCRC[4]; // 236-239: CRC32 of header excluding tagVersion unsigned char rootLength[IMAGE_LEN]; // 240-249: Size of rootfs unsigned char tagId[TAGID_LEN]; // 250-255: Identifies which type of tag this is, currently two-letter company code, and then three digits for version of broadcom code in which this tag was first introduced }; struct bcm_tag_bc221 { unsigned char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag unsigned char sig_1[20]; // 4-23: Company Line 1 unsigned char sig_2[14]; // 24-37: Company Line 2 unsigned char chipid[6]; // 38-43: Chip this image is for unsigned char boardid[16]; // 44-59: Board name unsigned char big_endian[2]; // 60-61: Map endianness -- 1 BE 0 LE unsigned char totalLength[IMAGE_LEN]; // 62-71: Total length of image unsigned char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE unsigned char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE unsigned char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of kernel (start of image) unsigned char flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs + deadcode (web flash uses this + kernelLength to determine the size of the kernel+rootfs flash image) unsigned char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel unsigned char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel unsigned char dualImage[2]; // 138-139: Unused at present unsigned char inactiveFlag[2]; // 140-141: Unused at present unsigned char rsa_signature[TAGINFO_LEN]; // 142-161: RSA Signature (unused at present; some vendors may use this) unsigned char reserved5[2]; // 162-163: Unused at present unsigned char tagId[TAGID_LEN]; // 164-169: Identifies which type of tag this is, currently two-letter company code, and then three digits for version of broadcom code in which this tag was first introduced unsigned char rootAddress[ADDRESS_LEN]; // 170-181: Address in memory of rootfs partition unsigned char rootLength[IMAGE_LEN]; // 182-191: Size of rootfs partition unsigned char flashLayoutVer[4]; // 192-195: Version flash layout unsigned char kernelCRC[4]; // 196-199: Guessed to be kernel CRC unsigned char reserved4[16]; // 200-215: Reserved area; unused at present unsigned char imageCRC[4]; // 216-219: CRC32 of images unsigned char reserved2[12]; // 220-231: Unused at present unsigned char tagIdCRC[4]; // 232-235: CRC32 to ensure validity of tagId unsigned char headerCRC[4]; // 236-239: CRC32 of header excluding tagVersion unsigned char reserved3[16]; // 240-255: Unused at present }; struct bcm_tag_bc310 { unsigned char tagVersion[4]; // 0-3: Version of the image tag unsigned char sig_1[20]; // 4-23: Company Line 1 unsigned char sig_2[14]; // 24-37: Company Line 2 unsigned char chipid[6]; // 38-43: Chip this image is for unsigned char boardid[16]; // 44-59: Board name unsigned char big_endian[2]; // 60-61: Map endianness -- 1 BE 0 LE unsigned char totalLength[IMAGE_LEN]; // 62-71: Total length of image unsigned char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE unsigned char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE unsigned char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of kernel (start of image) unsigned char flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs + deadcode (web flash uses this + kernelLength to determine the size of the kernel+rootfs flash image) unsigned char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel unsigned char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel unsigned char dualImage[2]; // 138-139: Unused at present unsigned char inactiveFlag[2]; // 140-141: Unused at present unsigned char information1[TAGINFO_LEN]; // 142-161: Unused at present; Some vendors use this for optional information unsigned char tagId[6]; // 162-167: Identifies which type of tag this is, currently two-letter company code, and then three digits for version of broadcom code in which this tag was first introduced unsigned char tagIdCRC[4]; // 168-171: CRC32 to ensure validity of tagId unsigned char rootAddress[ADDRESS_LEN]; // 172-183: Address in memory of rootfs partition unsigned char rootLength[IMAGE_LEN]; // 184-193: Size of rootfs partition unsigned char reserved1[22]; // 193-215: Reserved area not in use unsigned char imageCRC[4]; // 216-219: CRC32 of images unsigned char rootfsCRC[4]; // 220-227: CRC32 of rootfs partition unsigned char kernelCRC[4]; // 224-227: CRC32 of kernel partition unsigned char reserved2[8]; // 228-235: Unused at present unsigned char headerCRC[4]; // 235-239: CRC32 of header excluding tagVersion unsigned char reserved3[16]; // 240-255: Unused at present }; union bcm_tag { struct bcm_tag_bccfe bccfe; struct bcm_tag_bc300 bc300; struct bcm_tag_ag306 ag306; struct bcm_tag_bc221 bc221; struct bcm_tag_bc310 bc310; }; #define IMAGETAG_MAGIC1 "Broadcom Corporatio" #define IMAGETAG_MAGIC2 "ver. 2.0" #define IMAGETAG_VER "6" #define IMAGETAG_DEFAULT_LOADADDR 0x80010000 #define DEFAULT_FW_OFFSET 0x10000 #define DEFAULT_FLASH_START 0xBFC00000 #define DEFAULT_FLASH_BS (64 * 1024) #define DEADCODE 0xDEADC0DE union int2char { uint32_t input; unsigned char output[4]; }; /* This appears to be necessary due to alignment issues */ #define int2tag(tag, value) intchar.input = htonl(value); \ strncpy(tag, intchar.output, sizeof(union int2char)) #define printhex(format, value) printf(format, value, value) /* Kernel header */ struct kernelhdr { uint32_t loadaddr; /* Kernel load address */ uint32_t entry; /* Kernel entry point address */ uint32_t lzmalen; /* Compressed length of the LZMA data that follows */ }; static struct tagiddesc_t tagidtab[NUM_TAGID] = TAGID_DEFINITIONS; static uint32_t crc32tab[256] = { 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 crc32(uint32_t crc, uint8_t *data, size_t len) { while (len--) crc = (crc >> 8) ^ crc32tab[(crc ^ *data++) & 0xFF]; return crc; } uint32_t compute_crc32(uint32_t crc, FILE *binfile, size_t compute_start, size_t compute_len) { uint8_t readbuf[1024]; size_t read; fseek(binfile, compute_start, SEEK_SET); /* read block of 1024 bytes */ while (binfile && !feof(binfile) && !ferror(binfile) && (compute_len >= sizeof(readbuf))) { read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), binfile); crc = crc32(crc, readbuf, read); compute_len = compute_len - read; } /* Less than 1024 bytes remains, read compute_len bytes */ if (binfile && !feof(binfile) && !ferror(binfile) && (compute_len > 0)) { read = fread(readbuf, sizeof(uint8_t), compute_len, binfile); crc = crc32(crc, readbuf, read); } return crc; } size_t getlen(FILE *fp) { size_t retval, curpos; if (!fp) return 0; curpos = ftell(fp); fseek(fp, 0, SEEK_END); retval = ftell(fp); fseek(fp, curpos, SEEK_SET); return retval; } char *readstring(char *tagstring, size_t length) { char *outstring = NULL; outstring = calloc(length + 1, sizeof(uint8_t)); strncpy(outstring, tagstring, length); return outstring; } int analyzefile(char *bin, uint32_t fwaddr, char *tagid) { FILE *binfile; FILE *lzmafile; struct bcm_tag_bccfe common_tag; union bcm_tag read_tag; size_t read, filelen, lzmafilelen; char *lzmatmp; char lzmaname[255]; char lzmacmd[1024]; int lzmafd; char *buf; uint32_t imagelen, kernelAddress, kernelLength, rootAddress, rootLength, imageCRC, kernelCRC, headerCRC, rootfsCRC; if (bin && !(binfile = fopen(bin, "rb"))) { fprintf(stderr, "Unable to open image \"%s\"\n", bin); return 1; } filelen = getlen(binfile); if (!tagid) { fprintf(stderr, "No tagid specified\n"); return 1; } if (fread(&read_tag, sizeof(uint8_t), sizeof(read_tag), binfile) != sizeof(read_tag)) { perror("Error reading imagetag\n"); return 1; } printf("Tag Version: %s\n", readstring(read_tag.bccfe.tagVersion, TAGVER_LEN)); printf("Signature 1: %s\n", readstring(read_tag.bccfe.sig_1, 20)); printf("Signature 2: %s\n", readstring(read_tag.bccfe.sig_2, 14)); printf("Chip ID: %s\n", readstring(read_tag.bccfe.chipid, 6)); printf("Board ID: %s\n", readstring(read_tag.bccfe.boardid, 16)); if (read_tag.bccfe.big_endian[0] = '1') { printf("Bigendian: true\n"); } else if (read_tag.bccfe.big_endian[1] = '0') { printf("Bigendian: false\n"); } else { printf("Unrecognized value for endianess\n"); } printhex("Image size: %08x, %lu\n", strtoul(readstring(read_tag.bccfe.totalLength, IMAGE_LEN), NULL, 10)); printhex("CFE Address: %08x, %lu\n", strtoul(readstring(read_tag.bccfe.cfeAddress, ADDRESS_LEN), NULL, 10)); printhex("CFE Length: %08x, %lu\n", strtoul(readstring(read_tag.bccfe.cfeLength, IMAGE_LEN), NULL, 10)); rootAddress = strtoul(readstring(read_tag.bccfe.rootAddress, ADDRESS_LEN), NULL, 10); printhex("Flash Root Address: %08x, %lu\n", rootAddress); rootLength = strtoul(readstring(read_tag.bccfe.rootLength, IMAGE_LEN), NULL, 10); printhex("Flash Root Length: %08x, %lu\n", rootLength); kernelAddress = strtoul(readstring(read_tag.bccfe.kernelAddress, ADDRESS_LEN), NULL, 10); printhex("Flash Kernel Address: %08x, %lu\n", kernelAddress); kernelLength = strtoul(readstring(read_tag.bccfe.kernelLength, IMAGE_LEN), NULL, 10); printhex("Flash Kernel Length: %08x, %lu\n", kernelLength); printf("Vendor information: %s\n", readstring(read_tag.bccfe.information1, TAGINFO_LEN)); printf("Image CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bccfe.imageCRC))), compute_crc32(IMAGETAG_CRC_START, binfile, rootAddress - fwaddr, kernelLength + rootLength)); rootfsCRC = compute_crc32(IMAGETAG_CRC_START, binfile, rootAddress - fwaddr, rootLength); printf("Rootfs CRC: [Computed Value: %08x]\n", htonl(rootfsCRC)); printf("Image CRC from sections: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bccfe.imageCRC))), compute_crc32(rootfsCRC, binfile, kernelAddress - fwaddr, kernelLength)); printf("Header CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bccfe.headerCRC))), compute_crc32(IMAGETAG_CRC_START, binfile, 0, sizeof(read_tag) - 20)); if (strcmp(tagid, "bccfe") == 0) { } else if (strcmp(tagid, "bc300") == 0 ) { } else if (strcmp(tagid, "bc221") == 0 ) { printf("fsKernel CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bc221.kernelCRC))), compute_crc32(IMAGETAG_CRC_START, binfile, kernelAddress - fwaddr, kernelLength+rootLength)); } else if (strcmp(tagid, "ag306") == 0 ) { printf("Kernel CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.ag306.kernelCRC[0]))), compute_crc32(IMAGETAG_CRC_START, binfile, kernelAddress - fwaddr, kernelLength)); } else if (strcmp(tagid, "bc310") == 0 ) { printf("Kernel CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bc310.kernelCRC))), compute_crc32(IMAGETAG_CRC_START, binfile, kernelAddress - fwaddr, kernelLength)); printf("Rootfs CRC: %08x [Computed Value: %08x]\n", ntohl(*((uint32_t *)&(read_tag.bc310.rootfsCRC))), compute_crc32(IMAGETAG_CRC_START, binfile, rootAddress - fwaddr, rootLength)); } else { fprintf(stderr, "Unrecognized tagid value\n"); return 1; } return 0; } int main(int argc, char **argv) { int c, i; char *bin, *tagid; uint32_t flashstart, fwoffset, flash_bs; uint32_t fwaddr; int tagidfound = 0; bin = tagid = NULL; flashstart = DEFAULT_FLASH_START; fwoffset = DEFAULT_FW_OFFSET; flash_bs = DEFAULT_FLASH_BS; printf("Broadcom image analyzer - v0.1.0\n"); printf("Copyright (C) 2009 Daniel Dickinson\n"); while ((c = getopt(argc, argv, "i:s:n:k:ht:")) != -1) { switch (c) { case 'i': bin = optarg; break; case 's': flashstart = strtoul(optarg, NULL, 16); break; case 'n': fwoffset = strtoul(optarg, NULL, 16); break; case 't': tagid = optarg; break; case 'h': default: fprintf(stderr, "Usage: imagetag \n\n"); fprintf(stderr, " -i - image to analyze\n"); fprintf(stderr, " -s - Flash start address (i.e. \"0xBFC00000\"\n"); fprintf(stderr, " -n - \n"); fprintf(stderr, " -t - type if imagetag to create, use 'list' to see available choices"); fprintf(stderr, " -h - Displays this text\n\n"); return 1; } } tagidfound = 0; if (!tagid) { fprintf(stderr, "You must specify a tagid (-t)\n"); return 1; } else { if (strncmp(tagid, "list", 4) == 0) { fprintf(stderr, "\n----------------------------------------\n"); fprintf(stderr, "\tAvailable tagId:"); fprintf(stderr, "\n\n"); for (i = 0; i < NUM_TAGID; i++) { fprintf(stderr, "\t%s\t%s", tagidtab[i].tagid, tagidtab[i].tagiddesc); } fprintf(stderr, "\n----------------------------------------\n"); return 0; } } if (tagid) { for(i = 0; i < NUM_TAGID; i++) { if (strncmp(tagid, tagidtab[i].tagid, TAGID_LEN) == 0) { tagidfound = 1; break; } } if (!tagidfound) { if (tagid) { fprintf(stderr, "The tagid you selected '%s' does't exist.\n", tagid); } fprintf(stderr, "Use -t list to see the list of available ids"); return 1; } if (!bin) { fprintf(stderr, "You must specify the input file with -i\n"); return 1; } } /* Fallback to defaults */ fwaddr = flashstart + fwoffset; return analyzefile(bin, fwaddr, tagid); }