2 * Copyright (C) 2007 Ubiquiti Networks, Inc.
3 * Copyright (C) 2008 Lukas Kuna <ValXdater@seznam.cz>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <sys/types.h>
28 #include <netinet/in.h>
34 typedef struct fw_layout_data {
38 u_int32_t firmware_max_length;
41 fw_layout_t fw_layout_data[] = {
44 .kern_start = 0xbfc30000,
45 .kern_entry = 0x80041000,
46 .firmware_max_length= 0x00390000,
50 .kern_start = 0xbe030000,
51 .kern_entry = 0x80041000,
52 .firmware_max_length= 0x00390000,
56 .kern_start = 0xbf030000,
57 .kern_entry = 0x80060000,
58 .firmware_max_length= 0x00B00000,
62 .kern_start = 0xbf030000,
63 .kern_entry = 0x80060000,
64 .firmware_max_length= 0x00B00000,
68 .kern_start = 0xbf030000,
69 .kern_entry = 0x80060000,
70 .firmware_max_length= 0x00640000,
74 .kern_start = 0xa8030000,
75 .kern_entry = 0x80041000,
76 .firmware_max_length= 0x006C0000,
80 .kern_start = 0x9f050000,
81 .kern_entry = 0x80002000,
82 .firmware_max_length= 0x006A0000,
88 typedef struct part_data {
89 char partition_name[64];
91 u_int32_t partition_baseaddr;
92 u_int32_t partition_startaddr;
93 u_int32_t partition_memaddr;
94 u_int32_t partition_entryaddr;
95 u_int32_t partition_length;
97 char filename[PATH_MAX];
101 #define MAX_SECTIONS 8
102 #define DEFAULT_OUTPUT_FILE "firmware-image.bin"
103 #define DEFAULT_VERSION "UNKNOWN"
105 #define OPTIONS "B:hv:o:r:k:"
107 static int debug = 0;
109 typedef struct image_info {
111 char outputfile[PATH_MAX];
112 u_int32_t part_count;
113 part_data_t parts[MAX_SECTIONS];
116 static void write_header(void* mem, const char* version)
118 header_t* header = mem;
119 memset(header, 0, sizeof(header_t));
121 memcpy(header->magic, MAGIC_HEADER, MAGIC_LENGTH);
122 strncpy(header->version, version, sizeof(header->version));
123 header->crc = htonl(crc32(0L, (unsigned char *)header,
124 sizeof(header_t) - 2 * sizeof(u_int32_t)));
129 static void write_signature(void* mem, u_int32_t sig_offset)
131 /* write signature */
132 signature_t* sign = (signature_t*)(mem + sig_offset);
133 memset(sign, 0, sizeof(signature_t));
135 memcpy(sign->magic, MAGIC_END, MAGIC_LENGTH);
136 sign->crc = htonl(crc32(0L,(unsigned char *)mem, sig_offset));
140 static int write_part(void* mem, part_data_t* d)
145 part_crc_t* crc = mem + sizeof(part_t) + d->stats.st_size;
147 fd = open(d->filename, O_RDONLY);
150 ERROR("Failed opening file '%s'\n", d->filename);
154 if ((addr=(char*)mmap(0, d->stats.st_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED)
156 ERROR("Failed mmaping memory for file '%s'\n", d->filename);
161 memcpy(mem + sizeof(part_t), addr, d->stats.st_size);
162 munmap(addr, d->stats.st_size);
164 memset(p->name, 0, sizeof(p->name));
165 strncpy(p->magic, MAGIC_PART, MAGIC_LENGTH);
166 strncpy(p->name, d->partition_name, sizeof(p->name));
167 p->index = htonl(d->partition_index);
168 p->data_size = htonl(d->stats.st_size);
169 p->part_size = htonl(d->partition_length);
170 p->baseaddr = htonl(d->partition_baseaddr);
171 p->memaddr = htonl(d->partition_memaddr);
172 p->entryaddr = htonl(d->partition_entryaddr);
174 crc->crc = htonl(crc32(0L, mem, d->stats.st_size + sizeof(part_t)));
180 static void usage(const char* progname)
183 "Usage: %s [options]\n"
184 "\t-v <version string>\t - firmware version information, default: %s\n"
185 "\t-o <output file>\t - firmware output file, default: %s\n"
186 "\t-k <kernel file>\t\t - kernel file\n"
187 "\t-r <rootfs file>\t\t - rootfs file\n"
188 "\t-B <board name>\t\t - choose firmware layout for specified board (XS2, XS5, RS, XM)\n"
189 "\t-h\t\t\t - this help\n", VERSION,
190 progname, DEFAULT_VERSION, DEFAULT_OUTPUT_FILE);
193 static void print_image_info(const image_info_t* im)
196 INFO("Firmware version: '%s'\n"
197 "Output file: '%s'\n"
199 im->version, im->outputfile,
202 for (i = 0; i < im->part_count; ++i)
204 const part_data_t* d = &im->parts[i];
205 INFO(" %10s: %8ld bytes (free: %8ld)\n",
208 d->partition_length - d->stats.st_size);
214 static u_int32_t filelength(const char* file)
219 if ( (p = fopen(file, "rb") ) == NULL) return (-1);
221 fseek(p, 0, SEEK_END);
229 static int create_image_layout(const char* kernelfile, const char* rootfsfile, char* board_name, image_info_t* im)
231 part_data_t* kernel = &im->parts[0];
232 part_data_t* rootfs = &im->parts[1];
236 p = &fw_layout_data[0];
237 while ((strlen(p->name) != 0) && (strncmp(p->name, board_name, sizeof(board_name)) != 0))
239 if (p->name == NULL) {
240 printf("BUG! Unable to find default fw layout!\n");
244 printf("board = %s\n", p->name);
245 strcpy(kernel->partition_name, "kernel");
246 kernel->partition_index = 1;
247 kernel->partition_baseaddr = p->kern_start;
248 if ( (kernel->partition_length = filelength(kernelfile)) < 0) return (-1);
249 kernel->partition_memaddr = p->kern_entry;
250 kernel->partition_entryaddr = p->kern_entry;
251 strncpy(kernel->filename, kernelfile, sizeof(kernel->filename));
253 if (filelength(rootfsfile) + kernel->partition_length > p->firmware_max_length)
256 strcpy(rootfs->partition_name, "rootfs");
257 rootfs->partition_index = 2;
258 rootfs->partition_baseaddr = kernel->partition_baseaddr + kernel->partition_length;
259 rootfs->partition_length = p->firmware_max_length - kernel->partition_length;
260 rootfs->partition_memaddr = 0x00000000;
261 rootfs->partition_entryaddr = 0x00000000;
262 strncpy(rootfs->filename, rootfsfile, sizeof(rootfs->filename));
264 printf("kernel: %d 0x%08x\n", kernel->partition_length, kernel->partition_baseaddr);
265 printf("root: %d 0x%08x\n", rootfs->partition_length, rootfs->partition_baseaddr);
272 * Checks the availability and validity of all image components.
273 * Fills in stats member of the part_data structure.
275 static int validate_image_layout(image_info_t* im)
279 if (im->part_count == 0 || im->part_count > MAX_SECTIONS)
281 ERROR("Invalid part count '%d'\n", im->part_count);
285 for (i = 0; i < im->part_count; ++i)
287 part_data_t* d = &im->parts[i];
288 int len = strlen(d->partition_name);
289 if (len == 0 || len > 16)
291 ERROR("Invalid partition name '%s' of the part %d\n",
292 d->partition_name, i);
295 if (stat(d->filename, &d->stats) < 0)
297 ERROR("Couldn't stat file '%s' from part '%s'\n",
298 d->filename, d->partition_name);
301 if (d->stats.st_size == 0)
303 ERROR("File '%s' from part '%s' is empty!\n",
304 d->filename, d->partition_name);
307 if (d->stats.st_size > d->partition_length) {
308 ERROR("File '%s' too big (%d) - max size: 0x%08X (exceeds %lu bytes)\n",
309 d->filename, i, d->partition_length,
310 d->stats.st_size - d->partition_length);
318 static int build_image(image_info_t* im)
326 // build in-memory buffer
327 mem_size = sizeof(header_t) + sizeof(signature_t);
328 for (i = 0; i < im->part_count; ++i)
330 part_data_t* d = &im->parts[i];
331 mem_size += sizeof(part_t) + d->stats.st_size + sizeof(part_crc_t);
334 mem = (char*)calloc(mem_size, 1);
337 ERROR("Cannot allocate memory chunk of size '%u'\n", mem_size);
342 write_header(mem, im->version);
343 ptr = mem + sizeof(header_t);
345 for (i = 0; i < im->part_count; ++i)
347 part_data_t* d = &im->parts[i];
349 if ((rc = write_part(ptr, d)) != 0)
351 ERROR("ERROR: failed writing part %u '%s'\n", i, d->partition_name);
353 ptr += sizeof(part_t) + d->stats.st_size + sizeof(part_crc_t);
356 write_signature(mem, mem_size - sizeof(signature_t));
358 // write in-memory buffer into file
359 if ((f = fopen(im->outputfile, "w")) == NULL)
361 ERROR("Can not create output file: '%s'\n", im->outputfile);
365 if (fwrite(mem, mem_size, 1, f) != 1)
367 ERROR("Could not write %d bytes into file: '%s'\n",
368 mem_size, im->outputfile);
378 int main(int argc, char* argv[])
380 char kernelfile[PATH_MAX];
381 char rootfsfile[PATH_MAX];
382 char board_name[PATH_MAX];
386 memset(&im, 0, sizeof(im));
387 memset(kernelfile, 0, sizeof(kernelfile));
388 memset(rootfsfile, 0, sizeof(rootfsfile));
389 memset(board_name, 0, sizeof(board_name));
391 strcpy(im.outputfile, DEFAULT_OUTPUT_FILE);
392 strcpy(im.version, DEFAULT_VERSION);
394 while ((o = getopt(argc, argv, OPTIONS)) != -1)
399 strncpy(im.version, optarg, sizeof(im.version));
403 strncpy(im.outputfile, optarg, sizeof(im.outputfile));
410 strncpy(kernelfile, optarg, sizeof(kernelfile));
414 strncpy(rootfsfile, optarg, sizeof(rootfsfile));
418 strncpy(board_name, optarg, sizeof(board_name));
422 if (strlen(board_name) == 0)
423 strcpy(board_name, "XS2"); /* default to XS2 */
425 if (strlen(kernelfile) == 0)
427 ERROR("Kernel file is not specified, cannot continue\n");
432 if (strlen(rootfsfile) == 0)
434 ERROR("Root FS file is not specified, cannot continue\n");
439 if ((rc = create_image_layout(kernelfile, rootfsfile, board_name, &im)) != 0)
441 ERROR("Failed creating firmware layout description - error code: %d\n", rc);
445 if ((rc = validate_image_layout(&im)) != 0)
447 ERROR("Failed validating firmware layout - error code: %d\n", rc);
451 print_image_info(&im);
453 if ((rc = build_image(&im)) != 0)
455 ERROR("Failed building image file '%s' - error code: %d\n", im.outputfile, rc);