Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 1 | /* |
| 2 | * common utility functions for cbfstool |
| 3 | * |
| 4 | * Copyright (C) 2009 coresystems GmbH |
| 5 | * written by Patrick Georgi <patrick.georgi@coresystems.de> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include "common.h" |
| 25 | #include "cbfs.h" |
| 26 | #include "elf.h" |
| 27 | |
| 28 | #define dprintf |
| 29 | |
Patrick Georgi | 0da38dd | 2009-11-09 17:18:02 +0000 | [diff] [blame] | 30 | uint32_t getfilesize(const char *filename) |
| 31 | { |
| 32 | uint32_t size; |
| 33 | FILE *file = fopen(filename, "rb"); |
| 34 | fseek(file, 0, SEEK_END); |
| 35 | size = ftell(file); |
| 36 | fclose(file); |
| 37 | return size; |
| 38 | } |
| 39 | |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 40 | void *loadfile(const char *filename, uint32_t * romsize_p, void *content, |
| 41 | int place) |
| 42 | { |
| 43 | FILE *file = fopen(filename, "rb"); |
Patrick Georgi | 45d8a83 | 2009-09-15 08:21:46 +0000 | [diff] [blame] | 44 | if (file == NULL) |
| 45 | return NULL; |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 46 | fseek(file, 0, SEEK_END); |
| 47 | *romsize_p = ftell(file); |
| 48 | fseek(file, 0, SEEK_SET); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 49 | if (!content) { |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 50 | content = malloc(*romsize_p); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 51 | if (!content) { |
| 52 | printf("Could not get %d bytes for file %s\n", |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 53 | *romsize_p, filename); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 54 | exit(1); |
| 55 | } |
| 56 | } else if (place == SEEK_END) |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 57 | content -= *romsize_p; |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 58 | |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 59 | if (!fread(content, *romsize_p, 1, file)) { |
| 60 | printf("failed to read %s\n", filename); |
| 61 | return NULL; |
| 62 | } |
| 63 | fclose(file); |
| 64 | return content; |
| 65 | } |
| 66 | |
| 67 | struct cbfs_header *master_header; |
| 68 | uint32_t phys_start, phys_end, align, romsize; |
| 69 | void *offset; |
| 70 | |
| 71 | void recalculate_rom_geometry(void *romarea) |
| 72 | { |
| 73 | offset = romarea + romsize - 0x100000000ULL; |
| 74 | master_header = (struct cbfs_header *) |
| 75 | phys_to_virt(*((uint32_t *) phys_to_virt(0xfffffffc))); |
| 76 | phys_start = (0 - romsize + ntohl(master_header->offset)) & 0xffffffff; |
| 77 | phys_end = |
| 78 | (0 - ntohl(master_header->bootblocksize) - |
| 79 | sizeof(struct cbfs_header)) & 0xffffffff; |
| 80 | align = ntohl(master_header->align); |
| 81 | } |
| 82 | |
| 83 | void *loadrom(const char *filename) |
| 84 | { |
| 85 | void *romarea = loadfile(filename, &romsize, 0, SEEK_SET); |
Patrick Georgi | 45d8a83 | 2009-09-15 08:21:46 +0000 | [diff] [blame] | 86 | if (romarea == NULL) |
| 87 | return NULL; |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 88 | recalculate_rom_geometry(romarea); |
| 89 | return romarea; |
| 90 | } |
| 91 | |
| 92 | void writerom(const char *filename, void *start, uint32_t size) |
| 93 | { |
| 94 | FILE *file = fopen(filename, "wb"); |
| 95 | fwrite(start, size, 1, file); |
| 96 | fclose(file); |
| 97 | } |
| 98 | |
| 99 | int cbfs_file_header(uint32_t physaddr) |
| 100 | { |
| 101 | /* maybe improve this test */ |
| 102 | return (strncmp(phys_to_virt(physaddr), "LARCHIVE", 8) == 0); |
| 103 | } |
| 104 | |
| 105 | struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size) |
| 106 | { |
| 107 | struct cbfs_file *nextfile = (struct cbfs_file *)phys_to_virt(physaddr); |
| 108 | strncpy(nextfile->magic, "LARCHIVE", 8); |
| 109 | nextfile->len = htonl(size); |
| 110 | nextfile->type = htonl(0xffffffff); |
| 111 | nextfile->checksum = 0; // FIXME? |
| 112 | nextfile->offset = htonl(sizeof(struct cbfs_file) + 16); |
| 113 | memset(((void *)nextfile) + sizeof(struct cbfs_file), 0, 16); |
| 114 | return nextfile; |
| 115 | } |
| 116 | |
| 117 | int iself(unsigned char *input) |
| 118 | { |
| 119 | Elf32_Ehdr *ehdr = (Elf32_Ehdr *) input; |
| 120 | return !memcmp(ehdr->e_ident, ELFMAG, 4); |
| 121 | } |
| 122 | |
| 123 | struct filetypes_t { |
| 124 | uint32_t type; |
| 125 | const char *name; |
| 126 | } filetypes[] = { |
| 127 | {CBFS_COMPONENT_STAGE, "stage"}, |
| 128 | {CBFS_COMPONENT_PAYLOAD, "payload"}, |
| 129 | {CBFS_COMPONENT_OPTIONROM, "optionrom"}, |
| 130 | {CBFS_COMPONENT_DELETED, "deleted"}, |
| 131 | {CBFS_COMPONENT_NULL, "null"} |
| 132 | }; |
| 133 | |
| 134 | const char *strfiletype(uint32_t number) |
| 135 | { |
| 136 | int i; |
| 137 | for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++) |
| 138 | if (filetypes[i].type == number) |
| 139 | return filetypes[i].name; |
| 140 | return "unknown"; |
| 141 | } |
| 142 | |
| 143 | uint64_t intfiletype(const char *name) |
| 144 | { |
| 145 | int i; |
| 146 | for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++) |
| 147 | if (strcmp(filetypes[i].name, name) == 0) |
| 148 | return filetypes[i].type; |
| 149 | return -1; |
| 150 | } |
| 151 | |
| 152 | void print_cbfs_directory(const char *filename) |
| 153 | { |
| 154 | printf |
| 155 | ("%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\nAlignment: %d bytes\n\n", |
| 156 | filename, romsize / 1024, ntohl(master_header->bootblocksize), |
| 157 | romsize, ntohl(master_header->offset), align); |
| 158 | printf("%-30s %-10s %-12s Size\n", "Name", "Offset", "Type"); |
| 159 | uint32_t current = phys_start; |
| 160 | while (current < phys_end) { |
| 161 | if (!cbfs_file_header(current)) { |
| 162 | current += align; |
| 163 | continue; |
| 164 | } |
| 165 | struct cbfs_file *thisfile = |
| 166 | (struct cbfs_file *)phys_to_virt(current); |
| 167 | uint32_t length = ntohl(thisfile->len); |
| 168 | printf("%-30s 0x%-8x %-12s %d\n", |
| 169 | (const char *)(phys_to_virt(current) + |
| 170 | sizeof(struct cbfs_file)), |
| 171 | current - phys_start, strfiletype(ntohl(thisfile->type)), |
| 172 | length); |
| 173 | current = |
| 174 | ALIGN(current + ntohl(thisfile->len) + |
| 175 | ntohl(thisfile->offset), align); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location) |
| 180 | { |
| 181 | uint32_t current = phys_start; |
| 182 | while (current < phys_end) { |
| 183 | if (!cbfs_file_header(current)) { |
| 184 | current += align; |
| 185 | continue; |
| 186 | } |
| 187 | struct cbfs_file *thisfile = |
| 188 | (struct cbfs_file *)phys_to_virt(current); |
| 189 | uint32_t length = ntohl(thisfile->len); |
| 190 | |
| 191 | dprintf("at %x, %x bytes\n", current, length); |
| 192 | /* Is this a free chunk? */ |
| 193 | if ((thisfile->type == CBFS_COMPONENT_DELETED) |
| 194 | || (thisfile->type == CBFS_COMPONENT_NULL)) { |
| 195 | dprintf("null||deleted at %x, %x bytes\n", current, |
| 196 | length); |
| 197 | /* if this is the right size, and if specified, the right location, use it */ |
| 198 | if ((contentsize <= length) |
| 199 | && ((location == 0) || (current == location))) { |
| 200 | if (contentsize < length) { |
| 201 | dprintf |
| 202 | ("this chunk is %x bytes, we need %x. create a new chunk at %x with %x bytes\n", |
| 203 | length, contentsize, |
| 204 | ALIGN(current + contentsize, |
| 205 | align), |
| 206 | length - contentsize); |
| 207 | uint32_t start = |
| 208 | ALIGN(current + contentsize, align); |
| 209 | uint32_t size = |
| 210 | current + ntohl(thisfile->offset) |
| 211 | + length - start - 16 - |
| 212 | sizeof(struct cbfs_file); |
| 213 | cbfs_create_empty_file(start, size); |
| 214 | } |
| 215 | dprintf("copying data\n"); |
| 216 | memcpy(phys_to_virt(current), content, |
| 217 | contentsize); |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 218 | return 0; |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 219 | } |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 220 | if (location != 0) { |
| 221 | /* CBFS has the constraint that the chain always moves up in memory. so once |
| 222 | we're past the place we seek, we don't need to look any further */ |
| 223 | if (current > location) { |
| 224 | printf |
| 225 | ("the requested space is not available\n"); |
| 226 | return 1; |
| 227 | } |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 228 | |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 229 | /* Is the requested location inside the current chunk? */ |
| 230 | if ((current < location) |
| 231 | && ((location + contentsize) <= |
| 232 | (current + length))) { |
| 233 | /* Split it up. In the next iteration the code will be at the right place. */ |
| 234 | dprintf("split up. new length: %x\n", |
| 235 | location - current - |
| 236 | ntohl(thisfile->offset)); |
| 237 | thisfile->len = |
| 238 | htonl(location - current - |
| 239 | ntohl(thisfile->offset)); |
| 240 | struct cbfs_file *nextfile = |
| 241 | cbfs_create_empty_file(location, |
| 242 | length - |
| 243 | (location - |
| 244 | current)); |
| 245 | } |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 246 | } |
| 247 | } |
| 248 | current = |
| 249 | ALIGN(current + ntohl(thisfile->len) + |
| 250 | ntohl(thisfile->offset), align); |
| 251 | } |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 252 | printf("Could not add the file to CBFS, it's probably too big.\n"); |
Uwe Hermann | 6a3ca4e | 2009-11-12 20:06:32 +0000 | [diff] [blame] | 253 | printf("File size: %d bytes (%d KB).\n", contentsize, contentsize/1024); |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 254 | return 1; |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | /* returns new data block with cbfs_file header, suitable to dump into the ROM. location returns |
| 258 | the new location that points to the cbfs_file header */ |
| 259 | void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize, |
| 260 | uint32_t type, uint32_t * location) |
| 261 | { |
| 262 | uint32_t filename_len = ALIGN(strlen(filename) + 1, 16); |
| 263 | uint32_t headersize = sizeof(struct cbfs_file) + filename_len; |
| 264 | if ((location != 0) && (*location != 0)) { |
| 265 | uint32_t offset = *location % align; |
| 266 | /* If offset >= (headersize % align), we can stuff the header into the offset. |
| 267 | Otherwise the header has to be aligned itself, and put before the offset data */ |
| 268 | if (offset >= (headersize % align)) { |
| 269 | offset -= (headersize % align); |
| 270 | } else { |
| 271 | offset += align - (headersize % align); |
| 272 | } |
| 273 | headersize += offset; |
| 274 | *location -= headersize; |
| 275 | } |
| 276 | void *newdata = malloc(*datasize + headersize); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 277 | if (!newdata) { |
| 278 | printf("Could not get %d bytes for CBFS file.\n", *datasize + |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 279 | headersize); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 280 | exit(1); |
| 281 | } |
Peter Stuge | f4aca1d | 2009-12-06 12:14:39 +0000 | [diff] [blame^] | 282 | memset(newdata, 0xff, *datasize + headersize); |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 283 | struct cbfs_file *nextfile = (struct cbfs_file *)newdata; |
| 284 | strncpy(nextfile->magic, "LARCHIVE", 8); |
| 285 | nextfile->len = htonl(*datasize); |
| 286 | nextfile->type = htonl(type); |
| 287 | nextfile->checksum = 0; // FIXME? |
| 288 | nextfile->offset = htonl(headersize); |
| 289 | strcpy(newdata + sizeof(struct cbfs_file), filename); |
| 290 | memcpy(newdata + headersize, data, *datasize); |
| 291 | *datasize += headersize; |
| 292 | return newdata; |
| 293 | } |
| 294 | |
| 295 | int create_cbfs_image(const char *romfile, uint32_t _romsize, |
| 296 | const char *bootblock, uint32_t align) |
| 297 | { |
| 298 | romsize = _romsize; |
| 299 | unsigned char *romarea = malloc(romsize); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 300 | if (!romarea) { |
| 301 | printf("Could not get %d bytes of memory for CBFS image.\n", |
Patrick Georgi | 56f5fb7 | 2009-09-30 11:21:18 +0000 | [diff] [blame] | 302 | romsize); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 303 | exit(1); |
| 304 | } |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 305 | memset(romarea, 0xff, romsize); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 306 | |
| 307 | // Set up physical/virtual mapping |
| 308 | offset = romarea + romsize - 0x100000000ULL; |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 309 | |
| 310 | if (align == 0) |
| 311 | align = 64; |
| 312 | |
| 313 | uint32_t bootblocksize = 0; |
| 314 | loadfile(bootblock, &bootblocksize, romarea + romsize, SEEK_END); |
| 315 | struct cbfs_header *master_header = |
| 316 | (struct cbfs_header *)(romarea + romsize - bootblocksize - |
| 317 | sizeof(struct cbfs_header)); |
| 318 | master_header->magic = ntohl(0x4f524243); |
| 319 | master_header->version = ntohl(0x31313131); |
| 320 | master_header->romsize = htonl(romsize); |
| 321 | master_header->bootblocksize = htonl(bootblocksize); |
| 322 | master_header->align = htonl(align); |
| 323 | master_header->offset = htonl(0); |
| 324 | ((uint32_t *) phys_to_virt(0xfffffffc))[0] = |
| 325 | virt_to_phys(master_header); |
Stefan Reinauer | 853270a | 2009-09-22 15:55:01 +0000 | [diff] [blame] | 326 | |
| 327 | recalculate_rom_geometry(romarea); |
| 328 | |
Patrick Georgi | b7b56dd8 | 2009-09-14 13:29:27 +0000 | [diff] [blame] | 329 | struct cbfs_file *one_empty_file = |
| 330 | cbfs_create_empty_file((0 - romsize) & 0xffffffff, |
| 331 | romsize - bootblocksize - |
| 332 | sizeof(struct cbfs_header) - |
| 333 | sizeof(struct cbfs_file) - 16); |
| 334 | |
| 335 | writerom(romfile, romarea, romsize); |
| 336 | return 0; |
| 337 | } |
Patrick Georgi | 0da38dd | 2009-11-09 17:18:02 +0000 | [diff] [blame] | 338 | |
| 339 | static int in_segment(int addr, int size, int gran) |
| 340 | { |
| 341 | return ((addr & ~(gran - 1)) == ((addr + size) & ~(gran - 1))); |
| 342 | } |
| 343 | |
| 344 | uint32_t cbfs_find_location(const char *romfile, uint32_t filesize, |
| 345 | const char *filename, uint32_t alignment) |
| 346 | { |
| 347 | void *rom = loadrom(romfile); |
| 348 | int filename_size = strlen(filename); |
| 349 | |
| 350 | int headersize = |
| 351 | sizeof(struct cbfs_file) + ALIGN(filename_size + 1, |
| 352 | 16) + sizeof(struct cbfs_stage); |
| 353 | int totalsize = headersize + filesize; |
| 354 | |
| 355 | uint32_t current = phys_start; |
| 356 | while (current < phys_end) { |
| 357 | if (!cbfs_file_header(current)) { |
| 358 | current += align; |
| 359 | continue; |
| 360 | } |
| 361 | struct cbfs_file *thisfile = |
| 362 | (struct cbfs_file *)phys_to_virt(current); |
| 363 | |
| 364 | uint32_t top = |
| 365 | current + ntohl(thisfile->len) + ntohl(thisfile->offset); |
| 366 | if (((ntohl(thisfile->type) == 0x0) |
| 367 | || (ntohl(thisfile->type) == 0xffffffff)) |
| 368 | && (ntohl(thisfile->len) + ntohl(thisfile->offset) >= |
| 369 | totalsize)) { |
| 370 | if (in_segment |
| 371 | (current + headersize, filesize, alignment)) |
| 372 | return current + headersize; |
| 373 | if ((ALIGN(current, alignment) + filesize < top) |
| 374 | && (ALIGN(current, alignment) - headersize > |
| 375 | current) |
| 376 | && in_segment(ALIGN(current, alignment), filesize, |
| 377 | alignment)) |
| 378 | return ALIGN(current, alignment); |
| 379 | if ((ALIGN(current, alignment) + alignment + filesize < |
| 380 | top) |
| 381 | && (ALIGN(current, alignment) + alignment - |
| 382 | headersize > current) |
| 383 | && in_segment(ALIGN(current, alignment) + alignment, |
| 384 | filesize, alignment)) |
| 385 | return ALIGN(current, alignment) + alignment; |
| 386 | } |
| 387 | current = |
| 388 | ALIGN(current + ntohl(thisfile->len) + |
| 389 | ntohl(thisfile->offset), align); |
| 390 | } |
| 391 | return 0; |
| 392 | } |