2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2008 Axel Gembe <ago@bastart.eu.org>
7 * Copyright (C) 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
17 #include <netinet/in.h>
21 #include "imagetag_cmdline.h"
24 #define DEADCODE 0xDEADC0DE
28 uint32_t loadaddr; /* Kernel load address */
29 uint32_t entry; /* Kernel entry point address */
30 uint32_t lzmalen; /* Compressed length of the LZMA data that follows */
33 static char pirellitab[NUM_PIRELLI][BOARDID_LEN] = PIRELLI_BOARDS;
35 void int2tag(char *tag, uint32_t value) {
36 uint32_t network = htonl(value);
37 memcpy(tag, (char *)(&network), 4);
40 uint32_t compute_crc32(uint32_t crc, FILE *binfile, size_t compute_start, size_t compute_len)
42 uint8_t readbuf[1024];
45 fseek(binfile, compute_start, SEEK_SET);
47 /* read block of 1024 bytes */
48 while (binfile && !feof(binfile) && !ferror(binfile) && (compute_len >= sizeof(readbuf))) {
49 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), binfile);
50 crc = cyg_crc32_accumulate(crc, readbuf, read);
51 compute_len = compute_len - read;
54 /* Less than 1024 bytes remains, read compute_len bytes */
55 if (binfile && !feof(binfile) && !ferror(binfile) && (compute_len > 0)) {
56 read = fread(readbuf, sizeof(uint8_t), compute_len, binfile);
57 crc = cyg_crc32_accumulate(crc, readbuf, read);
63 size_t getlen(FILE *fp)
65 size_t retval, curpos;
71 fseek(fp, 0, SEEK_END);
73 fseek(fp, curpos, SEEK_SET);
78 int tagfile(const char *kernel, const char *rootfs, const char *bin, \
79 const struct gengetopt_args_info *args, \
80 uint32_t flash_start, uint32_t image_offset, \
81 uint32_t block_size, uint32_t load_address, uint32_t entry)
84 struct kernelhdr khdr;
85 FILE *kernelfile = NULL, *rootfsfile = NULL, *binfile = NULL, *cfefile = NULL;
86 size_t cfeoff, cfelen, kerneloff, kernellen, rootfsoff, rootfslen, \
87 read, imagelen, rootfsoffpadlen = 0, kernelfslen, kerneloffpadlen = 0, oldrootfslen, \
89 uint8_t readbuf[1024];
90 uint32_t imagecrc = IMAGETAG_CRC_START;
91 uint32_t kernelcrc = IMAGETAG_CRC_START;
92 uint32_t rootfscrc = IMAGETAG_CRC_START;
93 uint32_t kernelfscrc = IMAGETAG_CRC_START;
96 const uint32_t deadcode = htonl(DEADCODE);
101 memset(&tag, 0, sizeof(struct bcm_tag));
103 if (!kernel || !rootfs) {
104 fprintf(stderr, "imagetag can't create an image without both kernel and rootfs\n");
107 if (kernel && !(kernelfile = fopen(kernel, "rb"))) {
108 fprintf(stderr, "Unable to open kernel \"%s\"\n", kernel);
112 if (rootfs && !(rootfsfile = fopen(rootfs, "rb"))) {
113 fprintf(stderr, "Unable to open rootfs \"%s\"\n", rootfs);
117 if (!bin || !(binfile = fopen(bin, "wb+"))) {
118 fprintf(stderr, "Unable to open output file \"%s\"\n", bin);
122 if ((args->cfe_given) && (args->cfe_arg)) {
123 if (!(cfefile = fopen(args->cfe_arg, "rb"))) {
124 fprintf(stderr, "Unable to open CFE file \"%s\"\n", args->cfe_arg);
128 fwaddr = flash_start + image_offset;
130 cfeoff = flash_start;
131 cfelen = getlen(cfefile);
132 /* Seek to the start of the file after tag */
133 fseek(binfile, sizeof(tag), SEEK_SET);
136 while (cfefile && !feof(cfefile) && !ferror(cfefile)) {
137 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), cfefile);
138 fwrite(readbuf, sizeof(uint8_t), read, binfile);
146 if (!args->root_first_flag) {
147 /* Build the kernel address and length (doesn't need to be aligned, read only) */
148 kerneloff = fwaddr + sizeof(tag);
150 kernellen = getlen(kernelfile);
152 if (!args->kernel_file_has_header_flag) {
153 /* Build the kernel header */
154 khdr.loadaddr = htonl(load_address);
155 khdr.entry = htonl(entry);
156 khdr.lzmalen = htonl(kernellen);
158 /* Increase the kernel size by the header size */
159 kernellen += sizeof(khdr);
162 /* Build the rootfs address and length */
163 rootfsoff = kerneloff + kernellen;
164 /* align the start if requested */
165 if (args->align_rootfs_flag)
166 rootfsoff = (rootfsoff % block_size) > 0 ? (((rootfsoff / block_size) + 1) * block_size) : rootfsoff;
168 rootfsoff = (rootfsoff % 4) > 0 ? (((rootfsoff / 4) + 1) * 4) : rootfsoff;
171 rootfsend = rootfsoff + getlen(rootfsfile);
172 if ((rootfsend % block_size) > 0)
173 rootfsend = (((rootfsend / block_size) + 1) * block_size);
174 rootfslen = rootfsend - rootfsoff;
175 imagelen = rootfsoff + rootfslen - kerneloff + sizeof(deadcode);
176 rootfsoffpadlen = rootfsoff - (kerneloff + kernellen);
178 /* Seek to the start of the kernel */
179 fseek(binfile, kerneloff - fwaddr + cfelen, SEEK_SET);
181 /* Write the kernel header */
182 fwrite(&khdr, sizeof(khdr), 1, binfile);
184 /* Write the kernel */
185 while (kernelfile && !feof(kernelfile) && !ferror(kernelfile)) {
186 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), kernelfile);
187 fwrite(readbuf, sizeof(uint8_t), read, binfile);
190 /* Write the RootFS */
191 fseek(binfile, rootfsoff - fwaddr + cfelen, SEEK_SET);
192 while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
193 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);
194 fwrite(readbuf, sizeof(uint8_t), read, binfile);
197 /* Align image to specified erase block size and append deadc0de */
198 printf("Data alignment to %dk with 'deadc0de' appended\n", block_size/1024);
199 fseek(binfile, rootfsoff + rootfslen - fwaddr + cfelen, SEEK_SET);
200 fwrite(&deadcode, sizeof(uint32_t), 1, binfile);
202 oldrootfslen = rootfslen;
203 if (args->pad_given) {
204 uint32_t allfs = 0xffffffff;
205 uint32_t pad_size = args->pad_arg * 1024 * 1024;
207 printf("Padding image to %d bytes ...\n", pad_size);
208 while (imagelen < pad_size) {
209 fwrite(&allfs, sizeof(uint32_t), 1, binfile);
215 /* Flush the binfile buffer so that when we read from file, it contains
216 * everything in the buffer
220 /* Compute the crc32 of the entire image (deadC0de included) */
221 imagecrc = compute_crc32(imagecrc, binfile, kerneloff - fwaddr + cfelen, imagelen);
222 /* Compute the crc32 of the kernel and padding between kernel and rootfs) */
223 kernelcrc = compute_crc32(kernelcrc, binfile, kerneloff - fwaddr + cfelen, kernellen + rootfsoffpadlen);
224 /* Compute the crc32 of the kernel and padding between kernel and rootfs) */
225 kernelfscrc = compute_crc32(kernelfscrc, binfile, kerneloff - fwaddr + cfelen, kernellen + rootfsoffpadlen + rootfslen + sizeof(deadcode));
226 /* Compute the crc32 of the flashImageStart to rootLength.
227 * The broadcom firmware assumes the rootfs starts the image,
228 * therefore uses the rootfs start to determine where to flash
229 * the image. Since we have the kernel first we have to give
230 * it the kernel address, but the crc uses the length
231 * associated with this address, which is added to the kernel
232 * length to determine the length of image to flash and thus
233 * needs to be rootfs + deadcode
235 rootfscrc = compute_crc32(rootfscrc, binfile, kerneloff - fwaddr + cfelen, rootfslen + sizeof(deadcode));
238 /* Build the kernel address and length (doesn't need to be aligned, read only) */
239 rootfsoff = fwaddr + sizeof(tag);
240 oldrootfslen = getlen(rootfsfile);
241 rootfslen = oldrootfslen;
242 rootfslen = ( (rootfslen % block_size) > 0 ? (((rootfslen / block_size) + 1) * block_size) : rootfslen );
243 kerneloffpadlen = rootfslen - oldrootfslen;
244 oldrootfslen = rootfslen;
246 kerneloff = rootfsoff + rootfslen;
247 kernellen = getlen(kernelfile);
249 imagelen = cfelen + rootfslen + kernellen;
251 /* Seek to the start of the kernel */
252 fseek(binfile, kerneloff - fwaddr + cfelen, SEEK_SET);
254 if (!args->kernel_file_has_header_flag) {
255 /* Build the kernel header */
256 khdr.loadaddr = htonl(load_address);
257 khdr.entry = htonl(entry);
258 khdr.lzmalen = htonl(kernellen);
260 /* Write the kernel header */
261 fwrite(&khdr, sizeof(khdr), 1, binfile);
263 /* Increase the kernel size by the header size */
264 kernellen += sizeof(khdr);
267 /* Write the kernel */
268 while (kernelfile && !feof(kernelfile) && !ferror(kernelfile)) {
269 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), kernelfile);
270 fwrite(readbuf, sizeof(uint8_t), read, binfile);
273 /* Write the RootFS */
274 fseek(binfile, rootfsoff - fwaddr + cfelen, SEEK_SET);
275 while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
276 read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);
277 fwrite(readbuf, sizeof(uint8_t), read, binfile);
280 /* Flush the binfile buffer so that when we read from file, it contains
281 * everything in the buffer
285 /* Compute the crc32 of the entire image (deadC0de included) */
286 imagecrc = compute_crc32(imagecrc, binfile, sizeof(tag), imagelen);
287 /* Compute the crc32 of the kernel and padding between kernel and rootfs) */
288 kernelcrc = compute_crc32(kernelcrc, binfile, kerneloff - fwaddr + cfelen, kernellen + rootfsoffpadlen);
289 kernelfscrc = compute_crc32(kernelfscrc, binfile, rootfsoff - fwaddr + cfelen, kernellen + rootfslen);
290 rootfscrc = compute_crc32(rootfscrc, binfile, rootfsoff - fwaddr + cfelen, rootfslen);
293 /* Close the files */
301 strncpy(tag.tagVersion, args->tag_version_arg, sizeof(tag.tagVersion) - 1);
302 strncpy(tag.sig_1, args->signature_arg, sizeof(tag.sig_1) - 1);
303 strncpy(tag.sig_2, args->signature2_arg, sizeof(tag.sig_2) - 1);
304 strncpy(tag.chipid, args->chipid_arg, sizeof(tag.chipid) - 1);
305 strncpy(tag.boardid, args->boardid_arg, sizeof(tag.boardid) - 1);
306 strcpy(tag.big_endian, "1");
307 sprintf(tag.totalLength, "%lu", imagelen);
309 if (args->cfe_given) {
310 sprintf(tag.cfeAddress, "%" PRIu32, flash_start);
311 sprintf(tag.cfeLength, "%lu", cfelen);
313 /* We don't include CFE */
314 strcpy(tag.cfeAddress, "0");
315 strcpy(tag.cfeLength, "0");
318 sprintf(tag.kernelAddress, "%lu", kerneloff);
319 sprintf(tag.kernelLength, "%lu", kernellen + rootfsoffpadlen);
321 if (args->root_first_flag) {
322 sprintf(tag.flashImageStart, "%lu", rootfsoff);
323 sprintf(tag.flashRootLength, "%lu", rootfslen);
325 sprintf(tag.flashImageStart, "%lu", kerneloff);
326 sprintf(tag.flashRootLength, "%lu", rootfslen + sizeof(deadcode));
328 int2tag(tag.rootLength, oldrootfslen + sizeof(deadcode));
330 if (args->rsa_signature_given) {
331 strncpy(tag.rsa_signature, args->rsa_signature_arg, RSASIG_LEN);
334 if (args->layoutver_given) {
335 strncpy(tag.flashLayoutVer, args->layoutver_arg, TAGLAYOUT_LEN);
338 if (args->info1_given) {
339 strncpy(tag.information1, args->info1_arg, TAGINFO1_LEN);
342 if (args->info2_given) {
343 strncpy(tag.information2, args->info2_arg, TAGINFO2_LEN);
346 if (args->reserved2_given) {
347 strncpy(tag.reserved2, args->reserved2_arg, 16);
350 if (args->altinfo_given) {
351 strncpy(tag.information1, args->altinfo_arg, TAGINFO1_LEN);
354 if (args->second_image_flag_given) {
355 if (strncmp(args->second_image_flag_arg, "2", DUALFLAG_LEN) != 0) {
356 strncpy(tag.dualImage, args->second_image_flag_arg, DUALFLAG_LEN);
360 if (args->inactive_given) {
361 if (strncmp(args->inactive_arg, "2", INACTIVEFLAG_LEN) != 0) {
362 strncpy(tag.inactiveFlag, args->second_image_flag_arg, INACTIVEFLAG_LEN);
366 for (i = 0; i < NUM_PIRELLI; i++) {
367 if (strncmp(args->boardid_arg, pirellitab[i], BOARDID_LEN) == 0) {
374 int2tag(tag.imageCRC, kernelfscrc);
376 int2tag(tag.imageCRC, kernelcrc);
379 int2tag(&(tag.rootfsCRC[0]), rootfscrc);
380 int2tag(tag.kernelCRC, kernelcrc);
381 int2tag(tag.fskernelCRC, kernelfscrc);
382 int2tag(tag.headerCRC, cyg_crc32_accumulate(IMAGETAG_CRC_START, (uint8_t*)&tag, sizeof(tag) - 20));
384 fseek(binfile, 0L, SEEK_SET);
385 fwrite(&tag, sizeof(uint8_t), sizeof(tag), binfile);
393 int main(int argc, char **argv)
396 char *kernel, *rootfs, *bin;
397 uint32_t flash_start, image_offset, block_size, load_address, entry;
398 flash_start = image_offset = block_size = load_address = entry = 0;
399 struct gengetopt_args_info parsed_args;
401 kernel = rootfs = bin = NULL;
403 if (imagetag_cmdline(argc, argv, &parsed_args)) {
407 printf("Broadcom 63xx image tagger - v2.0.0\n");
408 printf("Copyright (C) 2008 Axel Gembe\n");
409 printf("Copyright (C) 2009-2010 Daniel Dickinson\n");
410 printf("Licensed under the terms of the Gnu General Public License\n");
412 kernel = parsed_args.kernel_arg;
413 rootfs = parsed_args.rootfs_arg;
414 bin = parsed_args.output_arg;
415 if (strlen(parsed_args.tag_version_arg) >= TAGVER_LEN) {
416 fprintf(stderr, "Error: Tag Version (tag_version,v) too long.\n");
419 if (strlen(parsed_args.boardid_arg) >= BOARDID_LEN) {
420 fprintf(stderr, "Error: Board ID (boardid,b) too long.\n");
423 if (strlen(parsed_args.chipid_arg) >= CHIPID_LEN) {
424 fprintf(stderr, "Error: Chip ID (chipid,c) too long.\n");
427 if (strlen(parsed_args.signature_arg) >= SIG1_LEN) {
428 fprintf(stderr, "Error: Magic string (signature,a) too long.\n");
431 if (strlen(parsed_args.signature2_arg) >= SIG2_LEN) {
432 fprintf(stderr, "Error: Second magic string (signature2,m) too long.\n");
435 if (parsed_args.layoutver_given) {
436 if (strlen(parsed_args.layoutver_arg) > FLASHLAYOUTVER_LEN) {
437 fprintf(stderr, "Error: Flash layout version (layoutver,y) too long.\n");
441 if (parsed_args.rsa_signature_given) {
442 if (strlen(parsed_args.rsa_signature_arg) > RSASIG_LEN) {
443 fprintf(stderr, "Error: RSA Signature (rsa_signature,r) too long.\n");
448 if (parsed_args.info1_given) {
449 if (strlen(parsed_args.info1_arg) >= TAGINFO1_LEN) {
450 fprintf(stderr, "Error: Vendor Information 1 (info1) too long.\n");
455 if (parsed_args.info2_given) {
456 if (strlen(parsed_args.info2_arg) >= TAGINFO2_LEN) {
457 fprintf(stderr, "Error: Vendor Information 2 (info2) too long.\n");
462 if (parsed_args.altinfo_given) {
463 if (strlen(parsed_args.altinfo_arg) >= ALTTAGINFO_LEN) {
464 fprintf(stderr, "Error: Vendor Information 1 (info1) too long.\n");
469 if (parsed_args.pad_given) {
470 if (parsed_args.pad_arg < 0) {
471 fprintf(stderr, "Error: pad size must be positive.\r");
476 flash_start = strtoul(parsed_args.flash_start_arg, NULL, 16);
477 image_offset = strtoul(parsed_args.image_offset_arg, NULL, 16);
478 block_size = strtoul(parsed_args.block_size_arg, NULL, 16);
480 if (!parsed_args.kernel_file_has_header_flag) {
481 load_address = strtoul(parsed_args.load_addr_arg, NULL, 16);
482 entry = strtoul(parsed_args.entry_arg, NULL, 16);
483 if (load_address == 0) {
484 fprintf(stderr, "Error: Invalid value for load address\n");
487 fprintf(stderr, "Error: Invalid value for entry\n");
491 return tagfile(kernel, rootfs, bin, &parsed_args, flash_start, image_offset, block_size, load_address, entry);