X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/84bf4449a74237550378ee5fded32c8ddb7b97ff..e5e2a4f7fb33f7df9b5d1aed44811e60dc571f36:/tools/firmware-utils/src/imagetag.c diff --git a/tools/firmware-utils/src/imagetag.c b/tools/firmware-utils/src/imagetag.c index af37992fa..1fb45e9e9 100644 --- a/tools/firmware-utils/src/imagetag.c +++ b/tools/firmware-utils/src/imagetag.c @@ -4,6 +4,7 @@ * for more details. * * Copyright (C) 2008 Axel Gembe + * Copyright (C) 2009 Daniel Dickinson */ #include @@ -15,14 +16,25 @@ #include #include +#include "bcm_tag.h" + #define IMAGETAG_MAGIC1 "Broadcom Corporatio" #define IMAGETAG_MAGIC2 "ver. 2.0" #define IMAGETAG_VER "6" #define IMAGETAG_DEFAULT_LOADADDR 0x80010000 -#define IMAGETAG_CRC_START 0xFFFFFFFF #define DEFAULT_FW_OFFSET 0x10000 #define DEFAULT_FLASH_START 0xBFC00000 #define DEFAULT_FLASH_BS (64 * 1024) +#define DEADCODE 0xDEADC0DE + +union int2char { + uint32_t input; + 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)) /* Kernel header */ struct kernelhdr { @@ -31,32 +43,7 @@ struct kernelhdr { uint32_t lzmalen; /* Compressed length of the LZMA data that follows */ }; -/* Image component */ -struct imagecomp { - uint8_t address[12]; /* Address of this component as ASCII */ - uint8_t len[10]; /* Length of this component as ASCII */ -}; - -/* Image tag */ -struct imagetag { - uint8_t tagver[4]; /* 0 - 3: Version of the tag as ASCII (2) */ - uint8_t sig1[20]; /* 4 - 23: BCM_MAGIC_1 */ - uint8_t sig2[14]; /* 24 - 37: BCM_MAGIC_2 */ - uint8_t chipid[6]; /* 38 - 43: Chip id as ASCII (6345) */ - uint8_t boardid[16]; /* 44 - 59: Board id as ASCII (96345GW2, etc...) */ - uint8_t bigendian[2]; /* 60 - 61: "1" for big endian, "0" for little endian */ - uint8_t imagelen[10]; /* 62 - 71: The length of all data that follows */ - struct imagecomp cfe; /* 72 - 93: The offset and length of CFE */ - struct imagecomp rootfs; /* 94 - 115: The offset and length of the root file system */ - struct imagecomp kernel; /* 116 - 137: The offset and length of the kernel */ - uint8_t dualimage[2]; /* 138 - 139: use "0" here */ - uint8_t inactive[2]; /* 140 - 141: use "0" here */ - uint8_t reserved1[74]; /* 142 - 215: reserved */ - uint32_t imagecrc; /* 216 - 219: crc of the images (net byte order) */ - uint8_t reserved2[16]; /* 220 - 235: reserved */ - uint32_t headercrc; /* 236 - 239: crc starting from sig1 until headercrc (net byte order) */ - uint8_t reserved3[16]; /* 240 - 255: reserved */ -}; +static char pirellitab[NUM_PIRELLI][BOARDID_LEN] = PIRELLI_BOARDS; static uint32_t crc32tab[256] = { 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, @@ -101,6 +88,29 @@ uint32_t crc32(uint32_t crc, uint8_t *data, size_t len) 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; @@ -119,27 +129,40 @@ size_t getlen(FILE *fp) int tagfile(const char *kernel, const char *rootfs, const char *bin, const char *boardid, const char *chipid, const uint32_t fwaddr, const uint32_t loadaddr, const uint32_t entry, - const char *ver, const char *magic2, const uint32_t flash_bs) + const char *ver, const char *magic2, const uint32_t flash_bs, + const char *rsignature, const char *layoutver) { - struct imagetag tag; + struct bcm_tag tag; struct kernelhdr khdr; FILE *kernelfile = NULL, *rootfsfile = NULL, *binfile; - size_t kerneloff, kernellen, rootfsoff, rootfslen, read; + size_t kerneloff, kernellen, rootfsoff, rootfslen, read, imagelen, rootfsoffpadlen, kernelfslen; uint8_t readbuf[1024]; - uint32_t crc; + uint32_t imagecrc = IMAGETAG_CRC_START; + uint32_t kernelcrc = IMAGETAG_CRC_START; + uint32_t rootfscrc = IMAGETAG_CRC_START; + uint32_t kernelfscrc = IMAGETAG_CRC_START; + const uint32_t deadcode = htonl(DEADCODE); + union int2char intchar; + int i; + int is_pirelli = 0; - memset(&tag, 0, sizeof(struct imagetag)); + memset(&tag, 0, sizeof(struct bcm_tag)); if (strlen(boardid) >= sizeof(tag.boardid)) { fprintf(stderr, "Board id is too long!\n"); return 1; } + /* Likewise chipid */ if (strlen(chipid) >= sizeof(tag.chipid)) { fprintf(stderr, "Chip id is too long!\n"); return 1; } + if (!kernel || !rootfs) { + fprintf(stderr, "imagetag can't create an image without both kernel and rootfs\n"); + } + if (kernel && !(kernelfile = fopen(kernel, "rb"))) { fprintf(stderr, "Unable to open kernel \"%s\"\n", kernel); return 1; @@ -150,7 +173,7 @@ int tagfile(const char *kernel, const char *rootfs, const char *bin, return 1; } - if (!bin || !(binfile = fopen(bin, "wb"))) { + if (!bin || !(binfile = fopen(bin, "wb+"))) { fprintf(stderr, "Unable to open output file \"%s\"\n", bin); return 1; } @@ -171,19 +194,19 @@ int tagfile(const char *kernel, const char *rootfs, const char *bin, rootfsoff = kerneloff + kernellen; rootfsoff = (rootfsoff % flash_bs) > 0 ? (((rootfsoff / flash_bs) + 1) * flash_bs) : rootfsoff; rootfslen = getlen(rootfsfile); - rootfslen = (rootfslen % flash_bs) > 0 ? (((rootfslen / flash_bs) + 1) * flash_bs) : rootfslen; + rootfslen = ( (rootfslen % flash_bs) > 0 ? (((rootfslen / flash_bs) + 1) * flash_bs) : rootfslen ); + imagelen = rootfsoff + rootfslen - kerneloff + sizeof(deadcode); + rootfsoffpadlen = rootfsoff - (kerneloff + kernellen); /* Seek to the start of the kernel */ fseek(binfile, kerneloff - fwaddr, SEEK_SET); /* Write the kernel header */ - crc = crc32(IMAGETAG_CRC_START, (uint8_t*)&khdr, sizeof(khdr)); fwrite(&khdr, sizeof(khdr), 1, binfile); /* Write the kernel */ while (kernelfile && !feof(kernelfile) && !ferror(kernelfile)) { read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), kernelfile); - crc = crc32(crc, readbuf, read); fwrite(readbuf, sizeof(uint8_t), read, binfile); } @@ -191,42 +214,82 @@ int tagfile(const char *kernel, const char *rootfs, const char *bin, fseek(binfile, rootfsoff - fwaddr, SEEK_SET); while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) { read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile); - /* - * TODO: Is this necessary ? - * crc = crc32(crc, readbuf, read); - */ fwrite(readbuf, sizeof(uint8_t), read, binfile); } + /* Align image to specified erase block size and append deadc0de */ + printf("Data alignment to %dk with 'deadc0de' appended\n", flash_bs/1024); + fseek(binfile, rootfsoff + rootfslen - fwaddr, SEEK_SET); + fwrite(&deadcode, sizeof(uint32_t), 1, binfile); + + /* Flush the binfile buffer so that when we read from file, it contains + * everything in the buffer + */ + fflush(binfile); + + /* Compute the crc32 of the entire image (deadC0de included) */ + imagecrc = compute_crc32(imagecrc, binfile, kerneloff - fwaddr, imagelen); + /* Compute the crc32 of the kernel and padding between kernel and rootfs) */ + kernelcrc = compute_crc32(kernelcrc, binfile, kerneloff - fwaddr, kernellen + rootfsoffpadlen); + /* Compute the crc32 of the kernel and padding between kernel and rootfs) */ + kernelfscrc = compute_crc32(kernelfscrc, binfile, kerneloff - fwaddr, kernellen + rootfsoffpadlen + rootfslen + sizeof(deadcode)); + /* Compute the crc32 of the flashImageStart to rootLength. + * The broadcom firmware assumes the rootfs starts the image, + * therefore uses the rootfs start to determine where to flash + * the image. Since we have the kernel first we have to give + * it the kernel address, but the crc uses the length + * associated with this address, which is added to the kernel + * length to determine the length of image to flash and thus + * needs to be rootfs + deadcode + */ + rootfscrc = compute_crc32(rootfscrc, binfile, kerneloff - fwaddr, rootfslen + sizeof(deadcode)); + /* Close the files */ fclose(kernelfile); fclose(rootfsfile); /* Build the tag */ - strcpy(tag.tagver, ver); - strncpy(tag.sig1, IMAGETAG_MAGIC1, sizeof(tag.sig1) - 1); - strncpy(tag.sig2, magic2, sizeof(tag.sig2) - 1); + strncpy(tag.tagVersion, ver, TAGVER_LEN); + strncpy(tag.sig_1, IMAGETAG_MAGIC1, sizeof(tag.sig_1) - 1); + strncpy(tag.sig_2, magic2, sizeof(tag.sig_2) - 1); strcpy(tag.chipid, chipid); strcpy(tag.boardid, boardid); - strcpy(tag.bigendian, "1"); - sprintf(tag.imagelen, "%lu", kernellen + rootfslen); + strcpy(tag.big_endian, "1"); + sprintf(tag.totalLength, "%lu", imagelen); /* We don't include CFE */ - strcpy(tag.cfe.address, "0"); - strcpy(tag.cfe.len, "0"); + strcpy(tag.cfeAddress, "0"); + strcpy(tag.cfeLength, "0"); - if (kernelfile) { - sprintf(tag.kernel.address, "%lu", kerneloff); - sprintf(tag.kernel.len, "%lu", kernellen); + sprintf(tag.kernelAddress, "%lu", kerneloff); + sprintf(tag.kernelLength, "%lu", kernellen + rootfsoffpadlen); + sprintf(tag.flashImageStart, "%lu", kerneloff); + sprintf(tag.rootLength, "%lu", rootfslen + sizeof(deadcode)); + + if (rsignature) { + strncpy(tag.rsa_signature, rsignature, RSASIG_LEN); } - if (rootfsfile) { - sprintf(tag.rootfs.address, "%lu", rootfsoff); - sprintf(tag.rootfs.len, "%lu", rootfslen); + if (layoutver) { + strncpy(tag.flashLayoutVer, layoutver, TAGLAYOUT_LEN); } - tag.imagecrc = htonl(crc); - tag.headercrc = htonl(crc32(IMAGETAG_CRC_START, (uint8_t*)&tag, sizeof(tag) - 20)); + for (i = 0; i < NUM_PIRELLI; i++) { + if (strncmp(boardid, pirellitab[i], BOARDID_LEN) == 0) { + is_pirelli = 1; + break; + } + } + + if ( !is_pirelli ) { + int2tag(tag.imageCRC, imagecrc); + } else { + int2tag(tag.imageCRC, kernelcrc); + } + int2tag(tag.kernelCRC, kernelcrc); + int2tag(tag.rootfsCRC, rootfscrc); + int2tag(tag.fskernelCRC, kernelfscrc); + int2tag(tag.headerCRC, crc32(IMAGETAG_CRC_START, (uint8_t*)&tag, sizeof(tag) - 20)); fseek(binfile, 0L, SEEK_SET); fwrite(&tag, sizeof(uint8_t), sizeof(tag), binfile); @@ -238,12 +301,13 @@ int tagfile(const char *kernel, const char *rootfs, const char *bin, int main(int argc, char **argv) { - int c; - char *kernel, *rootfs, *bin, *boardid, *chipid, *magic2, *ver; + int c, i; + char *kernel, *rootfs, *bin, *boardid, *chipid, *magic2, *ver, *tagid, *rsignature, *layoutver; uint32_t flashstart, fwoffset, loadaddr, entry; uint32_t fwaddr, flash_bs; - - kernel = rootfs = bin = boardid = chipid = magic2 = ver = NULL; + int tagidfound = 0; + + kernel = rootfs = bin = boardid = chipid = magic2 = ver = rsignature = layoutver = NULL; entry = 0; flashstart = DEFAULT_FLASH_START; @@ -251,10 +315,11 @@ int main(int argc, char **argv) loadaddr = IMAGETAG_DEFAULT_LOADADDR; flash_bs = DEFAULT_FLASH_BS; - printf("Broadcom image tagger - v0.1.1\n"); + printf("Broadcom image tagger - v1.0.0\n"); printf("Copyright (C) 2008 Axel Gembe\n"); + printf("Copyright (C) 2009-2010 Daniel Dickinson\n"); - while ((c = getopt(argc, argv, "i:f:o:b:c:s:n:v:m:k:l:e:h")) != -1) { + while ((c = getopt(argc, argv, "i:f:o:b:c:s:n:v:m:k:l:e:h:r:y:")) != -1) { switch (c) { case 'i': kernel = optarg; @@ -292,22 +357,30 @@ int main(int argc, char **argv) case 'e': entry = strtoul(optarg, NULL, 16); break; + case 'r': + rsignature = optarg; + break; + case 'y': + layoutver = optarg; + break; case 'h': default: - fprintf(stderr, "Usage: imagetag \n"); - fprintf(stderr, "-i - The LZMA compressed kernel file to include in the image\n"); - fprintf(stderr, "-f - The RootFS file to include in the image\n"); - fprintf(stderr, "-o - The output file\n"); - fprintf(stderr, "-b - The board id to set in the image (i.e. \"96345GW2\")\n"); - fprintf(stderr, "-c - The chip id to set in the image (i.e. \"6345\")\n"); - fprintf(stderr, "-s - Flash start address (i.e. \"0xBFC00000\"\n"); - fprintf(stderr, "-n - \n"); - fprintf(stderr, "-v - \n"); - fprintf(stderr, "-m - \n"); - fprintf(stderr, "-k - \n"); - fprintf(stderr, "-l - Address where the kernel expects to be loaded (defaults to 0x80010000)\n"); - fprintf(stderr, "-e - Address where the kernel entry point will end up\n"); - fprintf(stderr, "-h - Displays this text\n"); + fprintf(stderr, "Usage: imagetag \n\n"); + fprintf(stderr, " -i - The LZMA compressed kernel file to include in the image\n"); + fprintf(stderr, " -f - The RootFS file to include in the image\n"); + fprintf(stderr, " -o - The output file\n"); + fprintf(stderr, " -b - The board id to set in the image (i.e. \"96345GW2\")\n"); + fprintf(stderr, " -c - The chip id to set in the image (i.e. \"6345\")\n"); + fprintf(stderr, " -s - Flash start address (i.e. \"0xBFC00000\"\n"); + fprintf(stderr, " -n - \n"); + fprintf(stderr, " -v - \n"); + fprintf(stderr, " -m - \n"); + fprintf(stderr, " -k - flash erase block size\n"); + fprintf(stderr, " -l - Address where the kernel expects to be loaded (defaults to 0x80010000)\n"); + fprintf(stderr, " -e - Address where the kernel entry point will end up\n"); + fprintf(stderr, " -r - vendor specific signature, for those that need it"); + fprintf(stderr, " -y - Flash Layout Version (2.2x code versions need this)"); + fprintf(stderr, " -h - Displays this text\n\n"); return 1; } } @@ -325,7 +398,7 @@ int main(int argc, char **argv) /* Fallback to defaults */ fwaddr = flashstart + fwoffset; - + if (!magic2) { magic2 = malloc(sizeof(char) * 14); if (!magic2) { @@ -344,5 +417,6 @@ int main(int argc, char **argv) strcpy(ver, IMAGETAG_VER); } - return tagfile(kernel, rootfs, bin, boardid, chipid, fwaddr, loadaddr, entry, ver, magic2, flash_bs); + + return tagfile(kernel, rootfs, bin, boardid, chipid, fwaddr, loadaddr, entry, ver, magic2, flash_bs, rsignature, layoutver); }