* for more details.
*
* Copyright (C) 2008 Axel Gembe <ago@bastart.eu.org>
+ * Copyright (C) 2009 Daniel Dickinson <crazycshore@gmail.com>
*/
#include <stdio.h>
#include <sys/stat.h>
#include <netinet/in.h>
+#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 {
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,
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;
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;
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;
}
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);
}
fseek(binfile, rootfsoff - fwaddr, SEEK_SET);
while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);
- 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");
+
+ sprintf(tag.kernelAddress, "%lu", kerneloff);
+ sprintf(tag.kernelLength, "%lu", kernellen + rootfsoffpadlen);
+ sprintf(tag.flashImageStart, "%lu", kerneloff);
+ sprintf(tag.rootLength, "%lu", rootfslen + sizeof(deadcode));
- if (kernelfile) {
- sprintf(tag.kernel.address, "%lu", kerneloff);
- sprintf(tag.kernel.len, "%lu", kernellen);
+ 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);
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;
+ int tagidfound = 0;
- kernel = rootfs = bin = boardid = chipid = magic2 = ver = NULL;
+ kernel = rootfs = bin = boardid = chipid = magic2 = ver = rsignature = layoutver = NULL;
entry = 0;
flashstart = DEFAULT_FLASH_START;
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;
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 <parameters>\n");
- fprintf(stderr, "-i <kernel> - The LZMA compressed kernel file to include in the image\n");
- fprintf(stderr, "-f <rootfs> - The RootFS file to include in the image\n");
- fprintf(stderr, "-o <bin> - The output file\n");
- fprintf(stderr, "-b <boardid> - The board id to set in the image (i.e. \"96345GW2\")\n");
- fprintf(stderr, "-c <chipid> - The chip id to set in the image (i.e. \"6345\")\n");
- fprintf(stderr, "-s <flashstart> - Flash start address (i.e. \"0xBFC00000\"\n");
- fprintf(stderr, "-n <fwoffset> - \n");
- fprintf(stderr, "-v <version> - \n");
- fprintf(stderr, "-m <magic2> - \n");
- fprintf(stderr, "-k <flash_bs> - \n");
- fprintf(stderr, "-l <loadaddr> - Address where the kernel expects to be loaded (defaults to 0x80010000)\n");
- fprintf(stderr, "-e <entry> - Address where the kernel entry point will end up\n");
- fprintf(stderr, "-h - Displays this text\n");
+ fprintf(stderr, "Usage: imagetag <parameters>\n\n");
+ fprintf(stderr, " -i <kernel> - The LZMA compressed kernel file to include in the image\n");
+ fprintf(stderr, " -f <rootfs> - The RootFS file to include in the image\n");
+ fprintf(stderr, " -o <bin> - The output file\n");
+ fprintf(stderr, " -b <boardid> - The board id to set in the image (i.e. \"96345GW2\")\n");
+ fprintf(stderr, " -c <chipid> - The chip id to set in the image (i.e. \"6345\")\n");
+ fprintf(stderr, " -s <flashstart> - Flash start address (i.e. \"0xBFC00000\"\n");
+ fprintf(stderr, " -n <fwoffset> - \n");
+ fprintf(stderr, " -v <version> - \n");
+ fprintf(stderr, " -m <magic2> - \n");
+ fprintf(stderr, " -k <flash_bs> - flash erase block size\n");
+ fprintf(stderr, " -l <loadaddr> - Address where the kernel expects to be loaded (defaults to 0x80010000)\n");
+ fprintf(stderr, " -e <entry> - Address where the kernel entry point will end up\n");
+ fprintf(stderr, " -r <signature> - vendor specific signature, for those that need it");
+ fprintf(stderr, " -y <layoutver> - Flash Layout Version (2.2x code versions need this)");
+ fprintf(stderr, " -h - Displays this text\n\n");
return 1;
}
}
fprintf(stderr, "You need to specify the kernel entry (-e)\n");
return 1;
}
-
+
/* Fallback to defaults */
fwaddr = flashstart + fwoffset;
}
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);
}
projects / openwrt.git / blobdiff