diff options
Diffstat (limited to 'tools/firmware-utils/src/imagetag.c')
| -rw-r--r-- | tools/firmware-utils/src/imagetag.c | 492 |
1 files changed, 492 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/imagetag.c b/tools/firmware-utils/src/imagetag.c new file mode 100644 index 0000000..90fb7a4 --- /dev/null +++ b/tools/firmware-utils/src/imagetag.c @@ -0,0 +1,492 @@ +/* + * 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 <ago@bastart.eu.org> + * Copyright (C) 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net> + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> +#include <time.h> +#include <unistd.h> +#include <sys/stat.h> +#include <netinet/in.h> +#include <inttypes.h> + +#include "bcm_tag.h" +#include "imagetag_cmdline.h" +#include "cyg_crc.h" + +#define DEADCODE 0xDEADC0DE + +/* 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 char pirellitab[NUM_PIRELLI][BOARDID_LEN] = PIRELLI_BOARDS; + +void int2tag(char *tag, uint32_t value) { + uint32_t network = htonl(value); + memcpy(tag, (char *)(&network), 4); +} + +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 = cyg_crc32_accumulate(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 = cyg_crc32_accumulate(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; +} + +int tagfile(const char *kernel, const char *rootfs, const char *bin, \ + const struct gengetopt_args_info *args, \ + uint32_t flash_start, uint32_t image_offset, \ + uint32_t block_size, uint32_t load_address, uint32_t entry) +{ + struct bcm_tag tag; + struct kernelhdr khdr; + FILE *kernelfile = NULL, *rootfsfile = NULL, *binfile = NULL, *cfefile = NULL; + size_t cfeoff, cfelen, kerneloff, kernellen, rootfsoff, rootfslen, \ + read, imagelen, rootfsoffpadlen = 0, kernelfslen, kerneloffpadlen = 0, oldrootfslen, \ + rootfsend; + uint8_t readbuf[1024]; + uint32_t imagecrc = IMAGETAG_CRC_START; + uint32_t kernelcrc = IMAGETAG_CRC_START; + uint32_t rootfscrc = IMAGETAG_CRC_START; + uint32_t kernelfscrc = IMAGETAG_CRC_START; + uint32_t fwaddr = 0; + uint8_t crc_val; + const uint32_t deadcode = htonl(DEADCODE); + int i; + int is_pirelli = 0; + + + memset(&tag, 0, sizeof(struct bcm_tag)); + + 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; + } + + if (rootfs && !(rootfsfile = fopen(rootfs, "rb"))) { + fprintf(stderr, "Unable to open rootfs \"%s\"\n", rootfs); + return 1; + } + + if (!bin || !(binfile = fopen(bin, "wb+"))) { + fprintf(stderr, "Unable to open output file \"%s\"\n", bin); + return 1; + } + + if ((args->cfe_given) && (args->cfe_arg)) { + if (!(cfefile = fopen(args->cfe_arg, "rb"))) { + fprintf(stderr, "Unable to open CFE file \"%s\"\n", args->cfe_arg); + } + } + + fwaddr = flash_start + image_offset; + if (cfefile) { + cfeoff = flash_start; + cfelen = getlen(cfefile); + /* Seek to the start of the file after tag */ + fseek(binfile, sizeof(tag), SEEK_SET); + + /* Write the cfe */ + while (cfefile && !feof(cfefile) && !ferror(cfefile)) { + read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), cfefile); + fwrite(readbuf, sizeof(uint8_t), read, binfile); + } + + } else { + cfeoff = 0; + cfelen = 0; + } + + if (!args->root_first_flag) { + /* Build the kernel address and length (doesn't need to be aligned, read only) */ + kerneloff = fwaddr + sizeof(tag); + + kernellen = getlen(kernelfile); + + if (!args->kernel_file_has_header_flag) { + /* Build the kernel header */ + khdr.loadaddr = htonl(load_address); + khdr.entry = htonl(entry); + khdr.lzmalen = htonl(kernellen); + + /* Increase the kernel size by the header size */ + kernellen += sizeof(khdr); + } + + /* Build the rootfs address and length */ + rootfsoff = kerneloff + kernellen; + /* align the start if requested */ + if (args->align_rootfs_flag) + rootfsoff = (rootfsoff % block_size) > 0 ? (((rootfsoff / block_size) + 1) * block_size) : rootfsoff; + else + rootfsoff = (rootfsoff % 4) > 0 ? (((rootfsoff / 4) + 1) * 4) : rootfsoff; + + /* align the end */ + rootfsend = rootfsoff + getlen(rootfsfile); + if ((rootfsend % block_size) > 0) + rootfsend = (((rootfsend / block_size) + 1) * block_size); + rootfslen = rootfsend - rootfsoff; + imagelen = rootfsoff + rootfslen - kerneloff + sizeof(deadcode); + rootfsoffpadlen = rootfsoff - (kerneloff + kernellen); + + /* Seek to the start of the kernel */ + fseek(binfile, kerneloff - fwaddr + cfelen, SEEK_SET); + + /* Write the kernel header */ + fwrite(&khdr, sizeof(khdr), 1, binfile); + + /* Write the kernel */ + while (kernelfile && !feof(kernelfile) && !ferror(kernelfile)) { + read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), kernelfile); + fwrite(readbuf, sizeof(uint8_t), read, binfile); + } + + /* Write the RootFS */ + fseek(binfile, rootfsoff - fwaddr + cfelen, SEEK_SET); + while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) { + read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile); + 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", block_size/1024); + fseek(binfile, rootfsoff + rootfslen - fwaddr + cfelen, SEEK_SET); + fwrite(&deadcode, sizeof(uint32_t), 1, binfile); + + oldrootfslen = rootfslen; + if (args->pad_given) { + uint32_t allfs = 0xffffffff; + uint32_t pad_size = args->pad_arg * 1024 * 1024; + + printf("Padding image to %d bytes ...\n", pad_size); + while (imagelen < pad_size) { + fwrite(&allfs, sizeof(uint32_t), 1, binfile); + imagelen += 4; + rootfslen += 4; + } + } + + /* 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 + cfelen, imagelen); + /* Compute the crc32 of the kernel and padding between kernel and rootfs) */ + kernelcrc = compute_crc32(kernelcrc, binfile, kerneloff - fwaddr + cfelen, kernellen + rootfsoffpadlen); + /* Compute the crc32 of the kernel and padding between kernel and rootfs) */ + kernelfscrc = compute_crc32(kernelfscrc, binfile, kerneloff - fwaddr + cfelen, 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 + cfelen, rootfslen + sizeof(deadcode)); + + } else { + /* Build the kernel address and length (doesn't need to be aligned, read only) */ + rootfsoff = fwaddr + sizeof(tag); + oldrootfslen = getlen(rootfsfile); + rootfslen = oldrootfslen; + rootfslen = ( (rootfslen % block_size) > 0 ? (((rootfslen / block_size) + 1) * block_size) : rootfslen ); + kerneloffpadlen = rootfslen - oldrootfslen; + oldrootfslen = rootfslen; + + kerneloff = rootfsoff + rootfslen; + kernellen = getlen(kernelfile); + + imagelen = cfelen + rootfslen + kernellen; + + /* Seek to the start of the kernel */ + fseek(binfile, kerneloff - fwaddr + cfelen, SEEK_SET); + + if (!args->kernel_file_has_header_flag) { + /* Build the kernel header */ + khdr.loadaddr = htonl(load_address); + khdr.entry = htonl(entry); + khdr.lzmalen = htonl(kernellen); + + /* Write the kernel header */ + fwrite(&khdr, sizeof(khdr), 1, binfile); + + /* Increase the kernel size by the header size */ + kernellen += sizeof(khdr); + } + + /* Write the kernel */ + while (kernelfile && !feof(kernelfile) && !ferror(kernelfile)) { + read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), kernelfile); + fwrite(readbuf, sizeof(uint8_t), read, binfile); + } + + /* Write the RootFS */ + fseek(binfile, rootfsoff - fwaddr + cfelen, SEEK_SET); + while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) { + read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile); + fwrite(readbuf, sizeof(uint8_t), read, 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, sizeof(tag), imagelen); + /* Compute the crc32 of the kernel and padding between kernel and rootfs) */ + kernelcrc = compute_crc32(kernelcrc, binfile, kerneloff - fwaddr + cfelen, kernellen + rootfsoffpadlen); + kernelfscrc = compute_crc32(kernelfscrc, binfile, rootfsoff - fwaddr + cfelen, kernellen + rootfslen); + rootfscrc = compute_crc32(rootfscrc, binfile, rootfsoff - fwaddr + cfelen, rootfslen); + } + + /* Close the files */ + if (cfefile) { + fclose(cfefile); + } + fclose(kernelfile); + fclose(rootfsfile); + + /* Build the tag */ + strncpy(tag.tagVersion, args->tag_version_arg, sizeof(tag.tagVersion) - 1); + strncpy(tag.sig_1, args->signature_arg, sizeof(tag.sig_1) - 1); + strncpy(tag.sig_2, args->signature2_arg, sizeof(tag.sig_2) - 1); + strncpy(tag.chipid, args->chipid_arg, sizeof(tag.chipid) - 1); + strncpy(tag.boardid, args->boardid_arg, sizeof(tag.boardid) - 1); + strcpy(tag.big_endian, "1"); + sprintf(tag.totalLength, "%lu", imagelen); + + if (args->cfe_given) { + sprintf(tag.cfeAddress, "%" PRIu32, flash_start); + sprintf(tag.cfeLength, "%lu", cfelen); + } else { + /* We don't include CFE */ + strcpy(tag.cfeAddress, "0"); + strcpy(tag.cfeLength, "0"); + } + + sprintf(tag.kernelAddress, "%lu", kerneloff); + sprintf(tag.kernelLength, "%lu", kernellen + rootfsoffpadlen); + + if (args->root_first_flag) { + sprintf(tag.flashImageStart, "%lu", rootfsoff); + sprintf(tag.flashRootLength, "%lu", rootfslen); + } else { + sprintf(tag.flashImageStart, "%lu", kerneloff); + sprintf(tag.flashRootLength, "%lu", rootfslen + sizeof(deadcode)); + } + int2tag(tag.rootLength, oldrootfslen + sizeof(deadcode)); + + if (args->rsa_signature_given) { + strncpy(tag.rsa_signature, args->rsa_signature_arg, RSASIG_LEN); + } + + if (args->layoutver_given) { + strncpy(tag.flashLayoutVer, args->layoutver_arg, TAGLAYOUT_LEN); + } + + if (args->info1_given) { + strncpy(tag.information1, args->info1_arg, TAGINFO1_LEN); + } + + if (args->info2_given) { + strncpy(tag.information2, args->info2_arg, TAGINFO2_LEN); + } + + if (args->reserved2_given) { + strncpy(tag.reserved2, args->reserved2_arg, 16); + } + + if (args->altinfo_given) { + strncpy(tag.information1, args->altinfo_arg, TAGINFO1_LEN); + } + + if (args->second_image_flag_given) { + if (strncmp(args->second_image_flag_arg, "2", DUALFLAG_LEN) != 0) { + strncpy(tag.dualImage, args->second_image_flag_arg, DUALFLAG_LEN); + } + } + + if (args->inactive_given) { + if (strncmp(args->inactive_arg, "2", INACTIVEFLAG_LEN) != 0) { + strncpy(tag.inactiveFlag, args->second_image_flag_arg, INACTIVEFLAG_LEN); + } + } + + for (i = 0; i < NUM_PIRELLI; i++) { + if (strncmp(args->boardid_arg, pirellitab[i], BOARDID_LEN) == 0) { + is_pirelli = 1; + break; + } + } + + if ( !is_pirelli ) { + int2tag(tag.imageCRC, kernelfscrc); + } else { + int2tag(tag.imageCRC, kernelcrc); + } + + int2tag(&(tag.rootfsCRC[0]), rootfscrc); + int2tag(tag.kernelCRC, kernelcrc); + int2tag(tag.fskernelCRC, kernelfscrc); + int2tag(tag.headerCRC, cyg_crc32_accumulate(IMAGETAG_CRC_START, (uint8_t*)&tag, sizeof(tag) - 20)); + + fseek(binfile, 0L, SEEK_SET); + fwrite(&tag, sizeof(uint8_t), sizeof(tag), binfile); + + fflush(binfile); + fclose(binfile); + + return 0; +} + +int main(int argc, char **argv) +{ + int c, i; + char *kernel, *rootfs, *bin; + uint32_t flash_start, image_offset, block_size, load_address, entry; + flash_start = image_offset = block_size = load_address = entry = 0; + struct gengetopt_args_info parsed_args; + + kernel = rootfs = bin = NULL; + + if (imagetag_cmdline(argc, argv, &parsed_args)) { + exit(1); + } + + printf("Broadcom 63xx image tagger - v2.0.0\n"); + printf("Copyright (C) 2008 Axel Gembe\n"); + printf("Copyright (C) 2009-2010 Daniel Dickinson\n"); + printf("Licensed under the terms of the Gnu General Public License\n"); + + kernel = parsed_args.kernel_arg; + rootfs = parsed_args.rootfs_arg; + bin = parsed_args.output_arg; + if (strlen(parsed_args.tag_version_arg) >= TAGVER_LEN) { + fprintf(stderr, "Error: Tag Version (tag_version,v) too long.\n"); + exit(1); + } + if (strlen(parsed_args.boardid_arg) >= BOARDID_LEN) { + fprintf(stderr, "Error: Board ID (boardid,b) too long.\n"); + exit(1); + } + if (strlen(parsed_args.chipid_arg) >= CHIPID_LEN) { + fprintf(stderr, "Error: Chip ID (chipid,c) too long.\n"); + exit(1); + } + if (strlen(parsed_args.signature_arg) >= SIG1_LEN) { + fprintf(stderr, "Error: Magic string (signature,a) too long.\n"); + exit(1); + } + if (strlen(parsed_args.signature2_arg) >= SIG2_LEN) { + fprintf(stderr, "Error: Second magic string (signature2,m) too long.\n"); + exit(1); + } + if (parsed_args.layoutver_given) { + if (strlen(parsed_args.layoutver_arg) > FLASHLAYOUTVER_LEN) { + fprintf(stderr, "Error: Flash layout version (layoutver,y) too long.\n"); + exit(1); + } + } + if (parsed_args.rsa_signature_given) { + if (strlen(parsed_args.rsa_signature_arg) > RSASIG_LEN) { + fprintf(stderr, "Error: RSA Signature (rsa_signature,r) too long.\n"); + exit(1); + } + } + + if (parsed_args.info1_given) { + if (strlen(parsed_args.info1_arg) >= TAGINFO1_LEN) { + fprintf(stderr, "Error: Vendor Information 1 (info1) too long.\n"); + exit(1); + } + } + + if (parsed_args.info2_given) { + if (strlen(parsed_args.info2_arg) >= TAGINFO2_LEN) { + fprintf(stderr, "Error: Vendor Information 2 (info2) too long.\n"); + exit(1); + } + } + + if (parsed_args.altinfo_given) { + if (strlen(parsed_args.altinfo_arg) >= ALTTAGINFO_LEN) { + fprintf(stderr, "Error: Vendor Information 1 (info1) too long.\n"); + exit(1); + } + } + + if (parsed_args.pad_given) { + if (parsed_args.pad_arg < 0) { + fprintf(stderr, "Error: pad size must be positive.\r"); + exit(1); + } + } + + flash_start = strtoul(parsed_args.flash_start_arg, NULL, 16); + image_offset = strtoul(parsed_args.image_offset_arg, NULL, 16); + block_size = strtoul(parsed_args.block_size_arg, NULL, 16); + + if (!parsed_args.kernel_file_has_header_flag) { + load_address = strtoul(parsed_args.load_addr_arg, NULL, 16); + entry = strtoul(parsed_args.entry_arg, NULL, 16); + if (load_address == 0) { + fprintf(stderr, "Error: Invalid value for load address\n"); + } + if (entry == 0) { + fprintf(stderr, "Error: Invalid value for entry\n"); + } + } + + return tagfile(kernel, rootfs, bin, &parsed_args, flash_start, image_offset, block_size, load_address, entry); +} |