packages/redboot/v2_0/src/flash.c

   1 //==========================================================================
   2 //
   3 //      flash.c
   4 //
   5 //      RedBoot - FLASH memory support
   6 //
   7 //==========================================================================
   8 //####ECOSGPLCOPYRIGHTBEGIN####
   9 // -------------------------------------------
  10 // This file is part of eCos, the Embedded Configurable Operating System.
  11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
  12 // Copyright (C) 2003, 2004 Gary Thomas
  13 //
  14 // eCos is free software; you can redistribute it and/or modify it under
  15 // the terms of the GNU General Public License as published by the Free
  16 // Software Foundation; either version 2 or (at your option) any later version.
  17 //
  18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
  19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
  20 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  21 // for more details.
  22 //
  23 // You should have received a copy of the GNU General Public License along
  24 // with eCos; if not, write to the Free Software Foundation, Inc.,
  25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  26 //
  27 // As a special exception, if other files instantiate templates or use macros
  28 // or inline functions from this file, or you compile this file and link it
  29 // with other works to produce a work based on this file, this file does not
  30 // by itself cause the resulting work to be covered by the GNU General Public
  31 // License. However the source code for this file must still be made available
  32 // in accordance with section (3) of the GNU General Public License.
  33 //
  34 // This exception does not invalidate any other reasons why a work based on
  35 // this file might be covered by the GNU General Public License.
  36 //
  37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
  38 // at http://sources.redhat.com/ecos/ecos-license/
  39 // -------------------------------------------
  40 //####ECOSGPLCOPYRIGHTEND####
  41 //==========================================================================
  42 //#####DESCRIPTIONBEGIN####
  43 //
  44 // Author(s):    gthomas
  45 // Contributors: gthomas, tkoeller
  46 // Date:         2000-07-28
  47 // Purpose:
  48 // Description:
  49 //
  50 // This code is part of RedBoot (tm).
  51 //
  52 //####DESCRIPTIONEND####
  53 //
  54 //==========================================================================
  55
  56 #include <redboot.h>
  57 #define  _FLASH_PRIVATE_
  58 #include <cyg/io/flash.h>
  59 #include <fis.h>
  60 #include <sib.h>
  61 #include <cyg/infra/cyg_ass.h>         // assertion macros
  62
  63 #ifdef CYGBLD_BUILD_REDBOOT_WITH_WINCE_SUPPORT
  64 #include <wince.h>
  65 #endif
  66
  67 #ifdef CYGSEM_REDBOOT_FLASH_COMBINED_FIS_AND_CONFIG
  68 // Note horrid intertwining of functions, to save precious FLASH
  69 extern void conf_endian_fixup(void *p);
  70 #endif
  71
  72 // Round a quantity up
  73 #define _rup(n,s) ((((n)+(s-1))/s)*s)
  74
  75 #ifdef CYGOPT_REDBOOT_FIS
  76 // Image management functions
  77 local_cmd_entry("init",
  78                 "Initialize FLASH Image System [FIS]",
  79                 "[-f]",
  80                 fis_init,
  81                 FIS_cmds
  82     );
  83 #ifdef CYGSEM_REDBOOT_FIS_CRC_CHECK
  84 # define FIS_LIST_OPTS "[-c] [-d]"
  85 #else
  86 # define FIS_LIST_OPTS "[-d]"
  87 #endif
  88 local_cmd_entry("list",
  89                 "Display contents of FLASH Image System [FIS]",
  90                 FIS_LIST_OPTS,
  91                 fis_list,
  92                 FIS_cmds
  93     );
  94 local_cmd_entry("free",
  95                 "Display free [available] locations within FLASH Image System [FIS]",
  96                 "",
  97                 fis_free,
  98                 FIS_cmds
  99     );
 100 local_cmd_entry("delete",
 101                 "Delete an image from FLASH Image System [FIS]",
 102                 "name",
 103                 fis_delete,
 104                 FIS_cmds
 105     );
 106
 107 static char fis_load_usage[] =
 108 #ifdef CYGPRI_REDBOOT_ZLIB_FLASH
 109                       "[-d] "
 110 #endif
 111                       "[-b <memory_load_address>] [-c] "
 112 #ifdef CYGBLD_BUILD_REDBOOT_WITH_WINCE_SUPPORT
 113                       "[-w]"
 114 #endif
 115                       "name\n"
 116                       "Options:\n"
 117 #ifdef CYGPRI_REDBOOT_ZLIB_FLASH
 118                       "\t-d: decompress\n"
 119 #endif
 120                       "\t-c: print checksum\n"
 121 #ifdef CYGBLD_BUILD_REDBOOT_WITH_WINCE_SUPPORT
 122                       "\t-w: load as Windows CE image\n"
 123 #endif
 124                       ;
 125
 126 local_cmd_entry("load",
 127                 "Load image from FLASH Image System [FIS] into RAM",
 128                 fis_load_usage,
 129                 fis_load,
 130                 FIS_cmds
 131     );
 132 local_cmd_entry("create",
 133                 "Create an image",
 134                 "[-b <mem_base>] [-l <image_length>] [-s <data_length>]\n"
 135                 "      [-f <flash_addr>] [-e <entry_point>] [-r <ram_addr>] [-n] <name>",
 136                 fis_create,
 137                 FIS_cmds
 138     );
 139 #endif
 140
 141 // Raw flash access functions
 142 local_cmd_entry("erase",
 143                 "Erase FLASH contents",
 144                 "-f <flash_addr> -l <length>",
 145                 fis_erase,
 146                 FIS_cmds
 147     );
 148 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 149 local_cmd_entry("lock",
 150                 "LOCK FLASH contents",
 151                 "[-f <flash_addr> -l <length>] [name]",
 152                 fis_lock,
 153                 FIS_cmds
 154     );
 155 local_cmd_entry("unlock",
 156                 "UNLOCK FLASH contents",
 157                 "[-f <flash_addr> -l <length>] [name]",
 158                 fis_unlock,
 159                 FIS_cmds
 160     );
 161 #endif
 162 local_cmd_entry("write",
 163                 "Write raw data directly to FLASH",
 164                 "-f <flash_addr> -b <mem_base> -l <image_length>",
 165                 fis_write,
 166                 FIS_cmds
 167     );
 168
 169 // Define table boundaries
 170 CYG_HAL_TABLE_BEGIN( __FIS_cmds_TAB__, FIS_cmds);
 171 CYG_HAL_TABLE_END( __FIS_cmds_TAB_END__, FIS_cmds);
 172
 173 extern struct cmd __FIS_cmds_TAB__[], __FIS_cmds_TAB_END__;
 174
 175 // CLI function
 176 static cmd_fun do_fis;
 177 RedBoot_nested_cmd("fis",
 178             "Manage FLASH images",
 179             "{cmds}",
 180             do_fis,
 181             __FIS_cmds_TAB__, &__FIS_cmds_TAB_END__
 182     );
 183
 184 // Local data used by these routines
 185 void *flash_start, *flash_end;
 186 int flash_block_size, flash_num_blocks;
 187 #ifdef CYGOPT_REDBOOT_FIS
 188 void *fis_work_block;
 189 void *fis_addr;
 190 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 191 void *redundant_fis_addr;
 192 #endif
 193 int fisdir_size;  // Size of FIS directory.
 194 #endif
 195 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
 196 extern void *cfg_base;   // Location in Flash of config data
 197 extern int   cfg_size;   // Length of config data - rounded to Flash block size
 198 extern struct _config *config;
 199 #endif
 200
 201 static void
 202 fis_usage(char *why)
 203 {
 204     diag_printf("*** invalid 'fis' command: %s\n", why);
 205     cmd_usage(__FIS_cmds_TAB__, &__FIS_cmds_TAB_END__, "fis ");
 206 }
 207
 208 static void
 209 _show_invalid_flash_address(CYG_ADDRESS flash_addr, int stat)
 210 {
 211     diag_printf("Invalid FLASH address %p: %s\n", (void *)flash_addr, flash_errmsg(stat));
 212     diag_printf("   valid range is %p-%p\n", flash_start, flash_end);
 213 }
 214
 215 #ifdef CYGOPT_REDBOOT_FIS
 216
 217 // fis_endian_fixup() is used to swap endianess if required.
 218 //
 219 static inline void fis_endian_fixup(void *addr)
 220 {
 221 #ifdef REDBOOT_FLASH_REVERSE_BYTEORDER
 222     struct fis_image_desc *p = addr;
 223     int cnt = fisdir_size / sizeof(struct fis_image_desc);
 224
 225     while (cnt-- > 0) {
 226                 p->flash_base = CYG_SWAP32(p->flash_base);
 227                 p->mem_base = CYG_SWAP32(p->mem_base);
 228                 p->size = CYG_SWAP32(p->size);
 229                 p->entry_point = CYG_SWAP32(p->entry_point);
 230                 p->data_length = CYG_SWAP32(p->data_length);
 231                 p->desc_cksum = CYG_SWAP32(p->desc_cksum);
 232                 p->file_cksum = CYG_SWAP32(p->file_cksum);
 233                 p++;
 234     }
 235 #endif
 236 }
 237
 238 void
 239 fis_read_directory(void)
 240 {
 241     void *err_addr;
 242
 243     FLASH_READ(fis_addr, fis_work_block, fisdir_size, &err_addr);
 244     fis_endian_fixup(fis_work_block);
 245 }
 246
 247 struct fis_image_desc *
 248 fis_lookup(char *name, int *num)
 249 {
 250     int i;
 251     struct fis_image_desc *img;
 252
 253     fis_read_directory();
 254
 255     img = (struct fis_image_desc *)fis_work_block;
 256     for (i = 0;  i < fisdir_size/sizeof(*img);  i++, img++) {
 257                 if ((img->u.name[0] != 0xFF) &&
 258                         (strcasecmp(name, img->u.name) == 0)) {
 259                         if (num) *num = i;
 260                         return img;
 261                 }
 262     }
 263     return NULL;
 264 }
 265
 266 int fis_start_update_directory(int autolock)
 267 {
 268 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 269 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 270 #ifdef CYGSEM_REDBOOT_FLASH_LOCK_SPECIAL
 271         // Ensure [quietly] that the directory is unlocked before trying to update and locked again afterwards
 272         int do_autolock = 1;
 273 #else
 274         int do_autolock = autolock;
 275 #endif
 276 #endif
 277
 278         struct fis_image_desc *img;
 279         void *err_addr;
 280         void *tmp_fis_addr;
 281
 282         /*exchange old and new valid fis tables*/
 283         tmp_fis_addr = fis_addr;
 284         fis_addr = redundant_fis_addr;
 285         redundant_fis_addr = tmp_fis_addr;
 286
 287         //adjust the contents of the new fis table
 288         img = fis_work_block;
 289
 290         memcpy(img->u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC,
 291                    CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH);
 292         img->u.valid_info.valid_flag[0] = CYG_REDBOOT_RFIS_IN_PROGRESS;
 293         img->u.valid_info.valid_flag[1] = CYG_REDBOOT_RFIS_IN_PROGRESS;
 294         img->u.valid_info.version_count = img->u.valid_info.version_count+1;
 295
 296         //ready to go....
 297 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 298         if (do_autolock)
 299                 flash_unlock((void *)fis_addr, fisdir_size, &err_addr);
 300 #endif
 301
 302         flash_erase(fis_addr, fisdir_size, &err_addr);
 303         //now magic is 0xffffffff
 304         fis_endian_fixup(fis_work_block);
 305         flash_program(fis_addr, fis_work_block, flash_block_size, &err_addr);
 306         fis_endian_fixup(fis_work_block);
 307         //now magic is 0xff1234ff, valid is IN_PROGRESS, version_count is the old one +1
 308
 309 #else
 310         /* nothing to do here without redundant fis */
 311 #endif
 312         return 0;
 313
 314 }
 315
 316 int
 317 fis_update_directory(int autolock, int error)
 318 {
 319         void *err_addr;
 320
 321 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 322 #ifdef CYGSEM_REDBOOT_FLASH_LOCK_SPECIAL
 323         // Ensure [quietly] that the directory is unlocked before trying to update and locked again afterwards
 324         int do_autolock = 1;
 325 #else
 326         int do_autolock = autolock;
 327 #endif
 328 #endif
 329
 330 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 331
 332         struct fis_image_desc *img = fis_work_block;
 333
 334         // called from invalid state
 335         if (img->u.valid_info.valid_flag[0] != CYG_REDBOOT_RFIS_IN_PROGRESS)
 336                 return -1;
 337
 338         //if it failed, reset is0Valid to the state before startUpdateDirectory()
 339         //g_data.fisTable hasn't been changed yet, so it doesn't have to be reset now
 340         //then reread the contents from flash
 341         //setting the valid flag of the failed table to "INVALID" might also be not too bad
 342         //but IN_PROGRESS is also good enough I think
 343         if (error != 0) {
 344                 void *swap_fis_addr = fis_addr;
 345                 fis_addr = redundant_fis_addr;
 346                 redundant_fis_addr = swap_fis_addr;
 347         } else {
 348                 //success
 349                 void *tmp_fis_addr = (void *)((CYG_ADDRESS)fis_addr +
 350                                                                           CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH);
 351
 352                 img->u.valid_info.valid_flag[0] = CYG_REDBOOT_RFIS_VALID;
 353                 img->u.valid_info.valid_flag[1] = CYG_REDBOOT_RFIS_VALID;
 354
 355                 flash_program(tmp_fis_addr, img->u.valid_info.valid_flag,
 356                                           sizeof(img->u.valid_info.valid_flag), &err_addr);
 357         }
 358 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 359         if (do_autolock)
 360                 flash_lock((void *)fis_addr, fisdir_size, &err_addr);
 361 #endif
 362
 363 #else // CYGOPT_REDBOOT_REDUNDANT_FIS
 364     int blk_size = fisdir_size;
 365     int stat;
 366
 367     fis_endian_fixup(fis_work_block);
 368 #ifdef CYGSEM_REDBOOT_FLASH_COMBINED_FIS_AND_CONFIG
 369     memcpy((char *)fis_work_block+fisdir_size, config, cfg_size);
 370     conf_endian_fixup((char *)fis_work_block+fisdir_size);
 371     blk_size += cfg_size;
 372 #endif
 373 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 374     if (do_autolock)
 375                 flash_unlock((void *)fis_addr, blk_size, &err_addr);
 376 #endif
 377     if ((stat = flash_erase(fis_addr, flash_block_size, &err_addr)) != 0) {
 378                 diag_printf("Error erasing FIS directory at %p: %s\n", err_addr, flash_errmsg(stat));
 379     } else {
 380                 if ((stat = FLASH_PROGRAM(fis_addr, fis_work_block,
 381                                                                   flash_block_size, &err_addr)) != 0) {
 382                         diag_printf("Error writing FIS directory at %p: %s\n",
 383                                                 err_addr, flash_errmsg(stat));
 384                 }
 385     }
 386     fis_endian_fixup(fis_work_block);
 387 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
 388     if (do_autolock)
 389                 flash_lock((void *)fis_addr, blk_size, &err_addr);
 390 #endif
 391
 392 #endif // CYGOPT_REDBOOT_REDUNDANT_FIS
 393
 394     return 0;
 395 }
 396
 397 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 398
 399 int
 400 fis_get_valid_buf(struct fis_image_desc *img0, struct fis_image_desc *img1, int *update_was_interrupted)
 401 {
 402         *update_was_interrupted = 0;
 403         if (strncmp(img1->u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC,
 404                                 CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH) != 0) {
 405                 //buf0 must be valid
 406                 if (img0->u.valid_info.version_count > 0) {
 407                         *update_was_interrupted = 1;
 408                 }
 409                 return 0;
 410         } else if (strncmp(img0->u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC,
 411                                            CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH) != 0) {
 412                 //buf1 must be valid
 413                 if (img1->u.valid_info.version_count > 0) {
 414                         *update_was_interrupted = 1;
 415                 }
 416                 return 1;
 417         }
 418         //magic is ok for both, now check the valid flag
 419         if ((img1->u.valid_info.valid_flag[0] != CYG_REDBOOT_RFIS_VALID) ||
 420                 (img1->u.valid_info.valid_flag[1] != CYG_REDBOOT_RFIS_VALID)) {
 421                 //buf0 must be valid
 422                 *update_was_interrupted = 1;
 423                 return 0;
 424         } else if ((img0->u.valid_info.valid_flag[0] != CYG_REDBOOT_RFIS_VALID) ||
 425                            (img0->u.valid_info.valid_flag[1] != CYG_REDBOOT_RFIS_VALID)) {
 426                 //buf1 must be valid
 427                 *update_was_interrupted = 1;
 428                 return 1;
 429         }
 430
 431         //now check the version
 432         return img1->u.valid_info.version_count == (img0->u.valid_info.version_count + 1);
 433 }
 434
 435 void
 436 fis_erase_redundant_directory(void)
 437 {
 438     int stat;
 439     void *err_addr;
 440
 441 #ifdef CYGSEM_REDBOOT_FLASH_LOCK_SPECIAL
 442     // Ensure [quietly] that the directory is unlocked before trying
 443     // to update
 444     flash_unlock((void *)redundant_fis_addr, fisdir_size,
 445                  &err_addr);
 446 #endif
 447     if ((stat = flash_erase(redundant_fis_addr, fisdir_size,
 448                             &err_addr)) != 0) {
 449                 diag_printf("Error erasing FIS directory at %p: %s\n",
 450                                         err_addr, flash_errmsg(stat));
 451     }
 452 #ifdef CYGSEM_REDBOOT_FLASH_LOCK_SPECIAL
 453     // Ensure [quietly] that the directory is locked after the update
 454     flash_lock((void *)redundant_fis_addr, fisdir_size, &err_addr);
 455 #endif
 456 }
 457 #endif
 458
 459 static void
 460 fis_init(int argc, char *argv[])
 461 {
 462     int stat;
 463     struct fis_image_desc *img;
 464     void *err_addr;
 465     bool full_init = false;
 466     struct option_info opts[1];
 467     CYG_ADDRESS redboot_flash_start;
 468     unsigned long redboot_image_size;
 469
 470     init_opts(&opts[0], 'f', false, OPTION_ARG_TYPE_FLG,
 471                           &full_init, NULL, "full initialization, erases all of flash");
 472     if (!scan_opts(argc, argv, 2, opts, 1, 0, 0, "")) {
 473                 return;
 474     }
 475
 476     if (!verify_action("About to initialize [format] FLASH image system")) {
 477                 diag_printf("** Aborted\n");
 478                 return;
 479     }
 480     diag_printf("*** Initialize FLASH Image System\n");
 481
 482 #define MIN_REDBOOT_IMAGE_SIZE CYGBLD_REDBOOT_MIN_IMAGE_SIZE
 483     redboot_image_size = flash_block_size > MIN_REDBOOT_IMAGE_SIZE ?
 484                 flash_block_size : MIN_REDBOOT_IMAGE_SIZE;
 485
 486     img = fis_work_block;
 487     memset(img, 0xFF, fisdir_size);  // Start with erased data
 488
 489 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 490     //create the valid flag entry
 491     memset(img, 0, sizeof(struct fis_image_desc));
 492     strcpy(img->u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC);
 493     img->u.valid_info.valid_flag[0] = CYG_REDBOOT_RFIS_VALID;
 494     img->u.valid_info.valid_flag[1] = CYG_REDBOOT_RFIS_VALID;
 495     img->u.valid_info.version_count = 0;
 496     img++;
 497 #endif
 498
 499     // Create a pseudo image for RedBoot
 500 #ifdef CYGOPT_REDBOOT_FIS_RESERVED_BASE
 501     memset(img, 0, sizeof(*img));
 502     strcpy(img->u.name, "(reserved)");
 503     img->flash_base = (CYG_ADDRESS)flash_start;
 504     img->mem_base = (CYG_ADDRESS)flash_start;
 505     img->size = CYGNUM_REDBOOT_FLASH_RESERVED_BASE;
 506     img++;
 507 #endif
 508     redboot_flash_start = (CYG_ADDRESS)flash_start + CYGBLD_REDBOOT_FLASH_BOOT_OFFSET;
 509 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT
 510     memset(img, 0, sizeof(*img));
 511     strcpy(img->u.name, "RedBoot");
 512     img->flash_base = redboot_flash_start;
 513     img->mem_base = redboot_flash_start;
 514     img->size = redboot_image_size;
 515     img++;
 516     redboot_flash_start += redboot_image_size;
 517 #endif
 518 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT_POST
 519 #ifdef CYGNUM_REDBOOT_FIS_REDBOOT_POST_OFFSET
 520     // Take care to place the POST entry at the right offset:
 521     redboot_flash_start = (CYG_ADDRESS)flash_start + CYGNUM_REDBOOT_FIS_REDBOOT_POST_OFFSET;
 522 #endif
 523     memset(img, 0, sizeof(*img));
 524     strcpy(img->u.name, "RedBoot[post]");
 525     img->flash_base = redboot_flash_start;
 526     img->mem_base = redboot_flash_start;
 527     img->size = redboot_image_size;
 528     img++;
 529     redboot_flash_start += redboot_image_size;
 530 #endif
 531 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT_BACKUP
 532     // And a backup image
 533     memset(img, 0, sizeof(*img));
 534     strcpy(img->u.name, "RedBoot[backup]");
 535     img->flash_base = redboot_flash_start;
 536     img->mem_base = redboot_flash_start;
 537     img->size = redboot_image_size;
 538     img++;
 539     redboot_flash_start += redboot_image_size;
 540 #endif
 541 #if defined(CYGSEM_REDBOOT_FLASH_CONFIG) && defined(CYGHWR_REDBOOT_FLASH_CONFIG_MEDIA_FLASH)
 542     // And a descriptor for the configuration data
 543     memset(img, 0, sizeof(*img));
 544     strcpy(img->u.name, "RedBoot config");
 545     img->flash_base = (CYG_ADDRESS)cfg_base;
 546     img->mem_base = (CYG_ADDRESS)cfg_base;
 547     img->size = cfg_size;
 548     img++;
 549 #endif
 550     // And a descriptor for the descriptor table itself
 551     memset(img, 0, sizeof(*img));
 552     strcpy(img->u.name, "FIS directory");
 553     img->flash_base = (CYG_ADDRESS)fis_addr;
 554     img->mem_base = (CYG_ADDRESS)fis_addr;
 555     img->size = fisdir_size;
 556     img++;
 557
 558     //create the entry for the redundant fis table
 559 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 560     memset(img, 0, sizeof(*img));
 561     strcpy(img->u.name, "Redundant FIS");
 562     img->flash_base = (CYG_ADDRESS)redundant_fis_addr;
 563     img->mem_base = (CYG_ADDRESS)redundant_fis_addr;
 564     img->size = fisdir_size;
 565     img++;
 566 #endif
 567
 568 #ifdef CYGOPT_REDBOOT_FIS_DIRECTORY_ARM_SIB_ID
 569     // FIS gets the size of a full block - note, this should be changed
 570     // if support is added for multi-block FIS structures.
 571     img = (struct fis_image_desc *)((CYG_ADDRESS)fis_work_block + fisdir_size);
 572     // Add a footer so the FIS will be recognized by the ARM Boot
 573     // Monitor as a reserved area.
 574     {
 575                 tFooter *footer_p = (tFooter*)((CYG_ADDRESS)img - sizeof(tFooter));
 576                 cyg_uint32 check = 0;
 577                 cyg_uint32 *check_ptr = (cyg_uint32 *)footer_p;
 578                 cyg_int32 count = (sizeof(tFooter) - 4) >> 2;
 579
 580                 // Prepare footer. Try to protect all but the reserved space
 581                 // and the first RedBoot image (which is expected to be
 582                 // bootable), but fall back to just protecting the FIS if it's
 583                 // not at the default position in the flash.
 584 #if defined(CYGOPT_REDBOOT_FIS_RESERVED_BASE) && (-1 == CYGNUM_REDBOOT_FIS_DIRECTORY_BLOCK)
 585                 footer_p->blockBase = (char*)_ADDR_REDBOOT_TO_ARM(flash_start);
 586                 footer_p->blockBase += CYGNUM_REDBOOT_FLASH_RESERVED_BASE + redboot_image_size;
 587 #else
 588                 footer_p->blockBase = (char*)_ADDR_REDBOOT_TO_ARM(fis_work_block);
 589 #endif
 590                 footer_p->infoBase = NULL;
 591                 footer_p->signature = FLASH_FOOTER_SIGNATURE;
 592                 footer_p->type = TYPE_REDHAT_REDBOOT;
 593
 594                 // and compute its checksum
 595                 for ( ; count > 0; count--) {
 596                         if (*check_ptr > ~check)
 597                                 check++;
 598                         check += *check_ptr++;
 599                 }
 600                 footer_p->checksum = ~check;
 601     }
 602 #endif
 603
 604     // Do this after creating the initialized table because that inherently
 605     // calculates where the high water mark of default RedBoot images is.
 606
 607     if (full_init) {
 608                 unsigned long erase_size;
 609                 CYG_ADDRESS erase_start;
 610                 // Erase everything except default RedBoot images, fis block,
 611                 // and config block.
 612                 // First deal with the possible first part, before RedBoot images:
 613 #if (CYGBLD_REDBOOT_FLASH_BOOT_OFFSET > CYGNUM_REDBOOT_FLASH_RESERVED_BASE)
 614                 erase_start = (CYG_ADDRESS)flash_start + CYGNUM_REDBOOT_FLASH_RESERVED_BASE;
 615                 erase_size =  (CYG_ADDRESS)flash_start + CYGBLD_REDBOOT_FLASH_BOOT_OFFSET;
 616                 if ( erase_size > erase_start ) {
 617                         erase_size -= erase_start;
 618                         if ((stat = flash_erase((void *)erase_start, erase_size,
 619                                                                         &err_addr)) != 0) {
 620                                 diag_printf("   initialization failed at %p: %s\n",
 621                                                         err_addr, flash_errmsg(stat));
 622                         }
 623                 }
 624 #endif
 625                 // second deal with the larger part in the main:
 626                 erase_start = redboot_flash_start; // high water of created images
 627                 // Now the empty bits between the end of Redboot and the cfg and dir
 628                 // blocks.
 629 #if defined(CYGSEM_REDBOOT_FLASH_CONFIG) && \
 630     defined(CYGHWR_REDBOOT_FLASH_CONFIG_MEDIA_FLASH) && \
 631     !defined(CYGSEM_REDBOOT_FLASH_COMBINED_FIS_AND_CONFIG)
 632                 if (fis_addr > cfg_base) {
 633                         erase_size = (CYG_ADDRESS)cfg_base - erase_start; // the gap between HWM and config data
 634                 } else {
 635                         erase_size = (CYG_ADDRESS)fis_addr - erase_start; // the gap between HWM and fis data
 636                 }
 637                 if ((stat = flash_erase((void *)erase_start, erase_size,
 638                                                                 &err_addr)) != 0) {
 639                         diag_printf("     initialization failed %p: %s\n",
 640                                                 err_addr, flash_errmsg(stat));
 641                 }
 642                 erase_start += erase_size + flash_block_size;
 643                 if (fis_addr > cfg_base) {
 644                         erase_size = (CYG_ADDRESS)fis_addr - erase_start; // the gap between config and fis data
 645                 } else {
 646                         erase_size = (CYG_ADDRESS)cfg_base - erase_start; // the gap between fis and config data
 647                 }
 648                 if ((stat = flash_erase((void *)erase_start, erase_size,
 649                                                                 &err_addr)) != 0) {
 650                         diag_printf("     initialization failed %p: %s\n",
 651                                                 err_addr, flash_errmsg(stat));
 652                 }
 653                 erase_start += erase_size + flash_block_size;
 654 #else  // !CYGSEM_REDBOOT_FLASH_CONFIG
 655                 erase_size = (CYG_ADDRESS)fis_addr - erase_start; // the gap between HWM and fis data
 656                 if ((stat = flash_erase((void *)erase_start, erase_size,
 657                                                                 &err_addr)) != 0) {
 658                         diag_printf("     initialization failed %p: %s\n",
 659                                                 err_addr, flash_errmsg(stat));
 660                 }
 661                 erase_start += erase_size + flash_block_size;
 662 #endif
 663                 // Lastly, anything at the end, if there is any
 664                 if ( erase_start < (((CYG_ADDRESS)flash_end)+1) ) {
 665                         erase_size = ((CYG_ADDRESS)flash_end - erase_start) + 1;
 666                         if ((stat = flash_erase((void *)erase_start, erase_size,
 667                                                                         &err_addr)) != 0) {
 668                                 diag_printf("   initialization failed at %p: %s\n",
 669                                                         err_addr, flash_errmsg(stat));
 670                         }
 671                 }
 672 #ifndef CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
 673                 // In this case, 'fis free' works by scanning for erased blocks.  Since the
 674                 // "-f" option was not supplied, there may be areas which are not used but
 675                 // don't appear to be free since they are not erased - thus the warning
 676     } else {
 677                 diag_printf("    Warning: device contents not erased, some blocks may not be usable\n");
 678 #endif
 679     }
 680     fis_start_update_directory(0);
 681     fis_update_directory(0, 0);
 682 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
 683     fis_erase_redundant_directory();
 684 #endif
 685 }
 686
 687 static void
 688 fis_list(int argc, char *argv[])
 689 {
 690     struct fis_image_desc *img;
 691     int i = 0, image_indx;
 692     bool show_cksums = false;
 693     bool show_datalen = false;
 694     struct option_info opts[2];
 695     unsigned long last_addr, lowest_addr;
 696     bool image_found;
 697
 698 #ifdef CYGHWR_REDBOOT_ARM_FLASH_SIB
 699     // FIXME: this is somewhat half-baked
 700     extern void arm_fis_list(void);
 701     arm_fis_list();
 702     return;
 703 #endif
 704
 705     init_opts(&opts[i++], 'd', false, OPTION_ARG_TYPE_FLG,
 706                           &show_datalen, NULL, "display data length");
 707 #ifdef CYGSEM_REDBOOT_FIS_CRC_CHECK
 708     init_opts(&opts[i++], 'c', false, OPTION_ARG_TYPE_FLG,
 709                           &show_cksums, NULL, "display checksums");
 710 #endif
 711     if (!scan_opts(argc, argv, 2, opts, i, 0, 0, "")) {
 712                 return;
 713     }
 714     fis_read_directory();
 715
 716     // Let diag_printf do the formatting in both cases, rather than counting
 717     // cols by hand....
 718     diag_printf("%-16s  %-10s  %-10s  %-10s  %-s\n",
 719                                 "Name","FLASH addr",
 720                                 show_cksums ? "Checksum" : "Mem addr",
 721                                 show_datalen ? "Datalen" : "Length",
 722                                 "Entry point" );
 723     last_addr = 0;
 724     image_indx = 0;
 725     do {
 726                 image_found = false;
 727                 lowest_addr = 0xFFFFFFFF;
 728                 img = fis_work_block;
 729                 for (i = 0;  i < fisdir_size/sizeof(*img);  i++, img++) {
 730                         if (img->u.name[0] != 0xFF) {
 731                                 if ((img->flash_base >= last_addr) && (img->flash_base < lowest_addr)) {
 732                                         lowest_addr = img->flash_base;
 733                                         image_found = true;
 734                                         image_indx = i;
 735                                 }
 736                         }
 737                 }
 738                 if (image_found) {
 739                         img = fis_work_block;
 740                         img += image_indx;
 741                         diag_printf("%-16s  0x%08lX  0x%08lX  0x%08lX  0x%08lX\n", img->u.name,
 742                                                 (unsigned long)img->flash_base,
 743 #ifdef CYGSEM_REDBOOT_FIS_CRC_CHECK
 744                                                 show_cksums ? img->file_cksum : (unsigned long)img->mem_base,
 745                                                 show_datalen ? img->data_length : img->size,
 746 #else
 747                                                 (unsigned long)img->mem_base,
 748                                                 img->size,
 749 #endif
 750                                                 (unsigned long)img->entry_point);
 751                 }
 752                 last_addr = lowest_addr + 1;
 753     } while (image_found == true);
 754 }
 755
 756 #ifdef CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
 757 struct free_chunk {
 758     CYG_ADDRESS start, end;
 759 };
 760
 761 static int
 762 find_free(struct free_chunk *chunks)
 763 {
 764     CYG_ADDRESS *fis_ptr, *fis_end;
 765     struct fis_image_desc *img;
 766     int i, idx;
 767     int num_chunks = 1;
 768
 769     // Do not search the area reserved for pre-RedBoot systems:
 770     fis_ptr = (CYG_ADDRESS *)((CYG_ADDRESS)flash_start +
 771                                                           CYGNUM_REDBOOT_FLASH_RESERVED_BASE);
 772     fis_end = (CYG_ADDRESS *)flash_end;
 773     chunks[num_chunks - 1].start = (CYG_ADDRESS)fis_ptr;
 774     chunks[num_chunks - 1].end = (CYG_ADDRESS)fis_end;
 775     fis_read_directory();
 776     img = fis_work_block;
 777     for (i = 0;  i < fisdir_size/sizeof(*img);  i++, img++) {
 778         if (img->u.name[0] != 0xFF) {
 779             // Figure out which chunk this is in and split it
 780             for (idx = 0;  idx < num_chunks;  idx++) {
 781                 if ((img->flash_base >= chunks[idx].start) &&
 782                     (img->flash_base <= chunks[idx].end)) {
 783                     if (img->flash_base == chunks[idx].start) {
 784                         chunks[idx].start += img->size;
 785                         if (chunks[idx].start >= chunks[idx].end) {
 786                             // This free chunk has collapsed
 787                             while (idx < (num_chunks-1)) {
 788                                 chunks[idx] = chunks[idx+1];
 789                                 idx++;
 790                             }
 791                             num_chunks--;
 792                         }
 793                     } else if ((img->flash_base+img->size) == chunks[idx].end) {
 794                         chunks[idx].end = img->flash_base;
 795                     } else {
 796                         // Split chunk into two parts
 797                         if ((img->flash_base+img->size) < (CYG_ADDRESS)fis_end) {
 798                             int j;
 799                             // make room for new chunk
 800                             for (j = num_chunks; j > idx + 1; j--)
 801                                 chunks[j] = chunks[j-1];
 802                             chunks[idx+1].start = img->flash_base + img->size;
 803                             chunks[idx+1].end = chunks[idx].end;
 804                             if (++num_chunks == CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS) {
 805                                 diag_printf("Warning: too many free chunks\n");
 806                                 return num_chunks;
 807                             }
 808                         }
 809                         chunks[idx].end = img->flash_base;
 810                     }
 811                     break;
 812                 }
 813             }
 814         }
 815     }
 816     return num_chunks;
 817 }
 818 #endif // CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
 819
 820 static void
 821 fis_free(int argc, char *argv[])
 822 {
 823 #ifndef CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
 824     unsigned long *fis_ptr, *fis_end, flash_data;
 825     unsigned long *area_start;
 826     void *err_addr;
 827
 828         FLASH_Enable(flash_start, flash_end);
 829     // Do not search the area reserved for pre-RedBoot systems:
 830     fis_ptr = (unsigned long *)((CYG_ADDRESS)flash_start +
 831                                                                 CYGNUM_REDBOOT_FLASH_RESERVED_BASE);
 832     fis_end = (unsigned long *)(CYG_ADDRESS)flash_end;
 833     area_start = fis_ptr;
 834     while (fis_ptr < fis_end) {
 835                 flash_read(fis_ptr, &flash_data, sizeof(unsigned long), &err_addr);
 836                 if (flash_data != 0xFFFFFFFF) {
 837                         if (area_start != fis_ptr) {
 838                                 // Assume that this is something
 839                                 diag_printf("  0x%08x .. 0x%08x\n",
 840                                                         (CYG_ADDRESS)area_start, (CYG_ADDRESS)fis_ptr);
 841                         }
 842                         // Find next blank block
 843                         area_start = fis_ptr;
 844                         while (area_start < fis_end) {
 845                                 flash_read(area_start, &flash_data, sizeof(unsigned long), &err_addr);
 846                                 if (flash_data == 0xFFFFFFFF) {
 847                                         break;
 848                                 }
 849                                 area_start += flash_block_size / sizeof(CYG_ADDRESS);
 850                         }
 851                         fis_ptr = area_start;
 852                 } else {
 853                         fis_ptr += flash_block_size / sizeof(CYG_ADDRESS);
 854                 }
 855     }
 856     if (area_start != fis_ptr) {
 857                 diag_printf("  0x%08x .. 0x%08x\n",
 858                                         (CYG_ADDRESS)area_start, (CYG_ADDRESS)fis_ptr);
 859     }
 860         FLASH_Disable(flash_start, flash_end);
 861 #else
 862     struct free_chunk chunks[CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS];
 863     int idx, num_chunks;
 864
 865     num_chunks = find_free(chunks);
 866     for (idx = 0; idx < num_chunks; idx++) {
 867                 diag_printf("  0x%08x .. 0x%08x\n",
 868                                         chunks[idx].start,
 869                                         chunks[idx].end);
 870     }
 871 #endif
 872 }
 873
 874 // Find the first unused area of flash which is long enough
 875 static bool
 876 fis_find_free(CYG_ADDRESS *addr, unsigned long length)
 877 {
 878 #ifndef CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
 879     unsigned long *fis_ptr, *fis_end, flash_data;
 880     unsigned long *area_start;
 881     void *err_addr;
 882
 883     // Do not search the area reserved for pre-RedBoot systems:
 884     fis_ptr = (unsigned long *)((CYG_ADDRESS)flash_start +
 885                                                                 CYGNUM_REDBOOT_FLASH_RESERVED_BASE);
 886     fis_end = (unsigned long *)(CYG_ADDRESS)flash_end;
 887         FLASH_Enable(fis_ptr, fis_end);
 888     area_start = fis_ptr;
 889     while (fis_ptr < fis_end) {
 890                 flash_read(fis_ptr, &flash_data, sizeof(unsigned long), &err_addr);
 891                 if (flash_data != 0xFFFFFFFF) {
 892                         if (area_start != fis_ptr) {
 893                                 // Assume that this is something
 894                                 if ((fis_ptr - area_start) >= (length / sizeof(unsigned))) {
 895                                         *addr = (CYG_ADDRESS)area_start;
 896                                         return true;
 897                                 }
 898                         }
 899                         // Find next blank block
 900                         area_start = fis_ptr;
 901                         while (area_start < fis_end) {
 902                                 flash_read(area_start, &flash_data, sizeof(unsigned long), &err_addr);
 903                                 if (flash_data == 0xFFFFFFFF) {
 904                                         break;
 905                                 }
 906                                 area_start += flash_block_size / sizeof(CYG_ADDRESS);
 907                         }
 908                         fis_ptr = area_start;
 909                 } else {
 910                         fis_ptr += flash_block_size / sizeof(CYG_ADDRESS);
 911                 }
 912     }
 913         FLASH_Disable((void *)((CYG_ADDRESS)flash_start +
 914                                                    CYGNUM_REDBOOT_FLASH_RESERVED_BASE), fis_end);
 915     if (area_start != fis_ptr) {
 916                 if (fis_ptr - area_start >= length / sizeof(unsigned)) {
 917                         *addr = (CYG_ADDRESS)area_start;
 918                         return true;
 919                 }
 920     }
 921     return false;
 922 #else
 923     struct free_chunk chunks[CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS];
 924     int idx, num_chunks;
 925
 926     num_chunks = find_free(chunks);
 927     for (idx = 0; idx < num_chunks; idx++) {
 928                 if (chunks[idx].end + 1 - chunks[idx].start >= length) {
 929                         *addr = (CYG_ADDRESS)chunks[idx].start;
 930                         return true;
 931                 }
 932     }
 933     return false;
 934 #endif
 935 }
 936
 937 static void
 938 fis_create(int argc, char *argv[])
 939 {
 940     int i, stat;
 941     unsigned long length, img_size;
 942     CYG_ADDRESS mem_addr, exec_addr, flash_addr, entry_addr;
 943     char *name;
 944     bool mem_addr_set = false;
 945     bool exec_addr_set = false;
 946     bool entry_addr_set = false;
 947     bool flash_addr_set = false;
 948     bool length_set = false;
 949     bool img_size_set = false;
 950     bool no_copy = false;
 951     void *err_addr;
 952     struct fis_image_desc *img = NULL;
 953     bool defaults_assumed;
 954     struct option_info opts[7];
 955     bool prog_ok = true;
 956
 957     init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM,
 958                           &mem_addr, &mem_addr_set, "memory base address");
 959     init_opts(&opts[1], 'r', true, OPTION_ARG_TYPE_NUM,
 960                           &exec_addr, &exec_addr_set, "ram base address");
 961     init_opts(&opts[2], 'e', true, OPTION_ARG_TYPE_NUM,
 962                           &entry_addr, &entry_addr_set, "entry point address");
 963     init_opts(&opts[3], 'f', true, OPTION_ARG_TYPE_NUM,
 964                           &flash_addr, &flash_addr_set, "FLASH memory base address");
 965     init_opts(&opts[4], 'l', true, OPTION_ARG_TYPE_NUM,
 966                           &length, &length_set, "image length [in FLASH]");
 967     init_opts(&opts[5], 's', true, OPTION_ARG_TYPE_NUM,
 968                           &img_size, &img_size_set, "image size [actual data]");
 969     init_opts(&opts[6], 'n', false, OPTION_ARG_TYPE_FLG,
 970                           &no_copy, NULL, "don't copy from RAM to FLASH, just update directory");
 971     if (!scan_opts(argc, argv, 2, opts, 7, &name, OPTION_ARG_TYPE_STR, "file name")) {
 972                 fis_usage("invalid arguments");
 973                 return;
 974         }
 975
 976     fis_read_directory();
 977     defaults_assumed = false;
 978     if (name) {
 979                 // Search existing files to acquire defaults for params not specified:
 980                 img = fis_lookup(name, NULL);
 981                 if (img) {
 982                         // Found it, so get image size from there
 983                         if (!length_set) {
 984                                 length_set = true;
 985                                 length = img->size;
 986                                 defaults_assumed = true;
 987                         }
 988                 }
 989     }
 990     if (!mem_addr_set && (load_address >= (CYG_ADDRESS)ram_start) &&
 991                 (load_address_end) < (CYG_ADDRESS)ram_end) {
 992                 mem_addr = load_address;
 993                 mem_addr_set = true;
 994                 defaults_assumed = true;
 995                 // Get entry address from loader, unless overridden
 996                 if (!entry_addr_set)
 997                         entry_addr = entry_address;
 998                 if (!length_set) {
 999                         length = load_address_end - load_address;
1000                         length_set = true;
1001                 } else if (defaults_assumed && !img_size_set) {
1002                         /* We got length from the FIS table, so the size of the
1003                            actual loaded image becomes img_size */
1004                         img_size = load_address_end - load_address;
1005                         img_size_set = true;
1006                 }
1007     }
1008     // Get the remaining fall-back values from the fis
1009     if (img) {
1010                 if (!exec_addr_set) {
1011                         // Preserve "normal" behaviour
1012                         exec_addr_set = true;
1013                         exec_addr = flash_addr_set ? flash_addr : mem_addr;
1014                 }
1015                 if (!flash_addr_set) {
1016                         flash_addr_set = true;
1017                         flash_addr = img->flash_base;
1018                         defaults_assumed = true;
1019                 }
1020     }
1021
1022     if ((!no_copy && !mem_addr_set) || (no_copy && !flash_addr_set) ||
1023                 !length_set || !name) {
1024                 fis_usage("required parameter missing");
1025                 return;
1026     }
1027     if (!img_size_set) {
1028                 img_size = length;
1029     }
1030     // 'length' is size of FLASH image, 'img_size' is actual data size
1031     // Round up length to FLASH block size
1032 #ifndef CYGPKG_HAL_MIPS // FIXME: compiler is b0rken
1033     length = ((length + flash_block_size - 1) / flash_block_size) * flash_block_size;
1034     if (length < img_size) {
1035                 diag_printf("Invalid FLASH image size/length combination\n");
1036                 return;
1037     }
1038 #endif
1039     if (flash_addr_set &&
1040                 ((stat = flash_verify_addr((void *)flash_addr)) ||
1041                  (stat = flash_verify_addr((void *)(flash_addr + length - 1))))) {
1042                 _show_invalid_flash_address(flash_addr, stat);
1043                 return;
1044     }
1045     if (flash_addr_set && ((flash_addr & (flash_block_size - 1)) != 0)) {
1046                 diag_printf("Invalid FLASH address: %p\n", (void *)flash_addr);
1047                 diag_printf("   must be 0x%x aligned\n", flash_block_size);
1048                 return;
1049     }
1050     if (strlen(name) >= sizeof(img->u.name)) {
1051                 diag_printf("Name is too long, must be less than %d chars\n",
1052                                         sizeof(img->u.name));
1053                 return;
1054     }
1055     if (!no_copy) {
1056                 if ((mem_addr < (CYG_ADDRESS)ram_start) ||
1057                         ((mem_addr+img_size) >= (CYG_ADDRESS)ram_end)) {
1058                         diag_printf("** WARNING: RAM address: %p may be invalid\n", (void *)mem_addr);
1059                         diag_printf("   valid range is %p-%p\n", (void *)ram_start, (void *)ram_end);
1060                 }
1061                 if (!flash_addr_set && !fis_find_free(&flash_addr, length)) {
1062                         diag_printf("Can't locate %lx(%ld) bytes free in FLASH\n", length, length);
1063                         return;
1064                 }
1065     }
1066     // First, see if the image by this name has agreable properties
1067     if (img) {
1068                 if (flash_addr_set && (img->flash_base != flash_addr)) {
1069                         diag_printf("Image found, but flash address (%p)\n"
1070                                                 "             is incorrect (present image location %p)\n",
1071                                                 (void *)flash_addr, (void *)img->flash_base);
1072
1073                         return;
1074                 }
1075                 if (img->size != length) {
1076                         diag_printf("Image found, but length (0x%lx, necessitating image size 0x%lx)\n"
1077                                                 "             is incorrect (present image size 0x%lx)\n",
1078                                                 img_size, length, img->size);
1079                         return;
1080                 }
1081                 if (!verify_action("An image named '%s' exists", name)) {
1082                         return;
1083                 } else {
1084                         if (defaults_assumed) {
1085                                 if (no_copy &&
1086                                         !verify_action("* CAUTION * about to program '%s'\n                at %p..%p from %p",
1087                                                                    name, (void *)flash_addr,
1088                                                                    (void *)(flash_addr + img_size - 1),
1089                                                                    (void *)mem_addr)) {
1090                                         return;  // The guy gave up
1091                                 }
1092                         }
1093                 }
1094     } else {
1095 #ifdef CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS
1096                 // Make sure that any FLASH address specified directly is truly free
1097                 if (flash_addr_set && !no_copy) {
1098                         struct free_chunk chunks[CYGDAT_REDBOOT_FIS_MAX_FREE_CHUNKS];
1099                         int idx, num_chunks;
1100                         bool is_free = false;
1101
1102                         num_chunks = find_free(chunks);
1103                         for (idx = 0;  idx < num_chunks;  idx++) {
1104                                 if ((flash_addr >= chunks[idx].start) &&
1105                                         ((flash_addr + length - 1) <= chunks[idx].end)) {
1106                                         is_free = true;
1107                                 }
1108                         }
1109                         if (!is_free) {
1110                                 diag_printf("Invalid FLASH address - not free!\n");
1111                                 return;
1112                         }
1113                 }
1114 #endif
1115                 // If not image by that name, try and find an empty slot
1116                 img = fis_work_block;
1117                 for (i = 0;  i < fisdir_size / sizeof(*img);  i++, img++) {
1118                         if (img->u.name[0] == 0xFF) {
1119                                 break;
1120                         }
1121                 }
1122                 if (i >= fisdir_size / sizeof(*img)) {
1123                         diag_printf("Can't find an empty slot in FIS directory!\n");
1124                         return;
1125                 }
1126     }
1127     if (!no_copy) {
1128                 // Safety check - make sure the address range is not within the code we're running
1129                 if (flash_code_overlaps((void *)flash_addr,
1130                                                                 (void *)(flash_addr + img_size - 1))) {
1131                         diag_printf("Can't program this region - contains code in use!\n");
1132                         return;
1133                 }
1134                 if (prog_ok) {
1135                         FLASH_Enable((void *)flash_addr, (void *)(flash_addr + length));
1136                         // Erase area to be programmed
1137                         stat = flash_erase((void *)flash_addr, length, &err_addr);
1138                         FLASH_Disable((void *)flash_addr, (void *)(flash_addr + length));
1139                         if (stat != 0) {
1140                                 diag_printf("Can't erase region at %p: %s\n", err_addr, flash_errmsg(stat));
1141                                 prog_ok = false;
1142                         }
1143                 }
1144                 if (prog_ok) {
1145                         // Now program it
1146                         FLASH_Enable((void *)flash_addr, (void *)(flash_addr + length));
1147                         stat = FLASH_PROGRAM((void *)flash_addr, (void *)mem_addr,
1148                                                                  img_size, &err_addr);
1149                         FLASH_Disable((void *)flash_addr, (void *)(flash_addr + length));
1150                         if (stat != 0) {
1151                                 diag_printf("Can't program region at %p: %s\n", err_addr, flash_errmsg(stat));
1152                                 prog_ok = false;
1153                         }
1154                 }
1155     }
1156     if (prog_ok) {
1157                 // Update directory
1158                 memset(img, 0, sizeof(*img));
1159                 strcpy(img->u.name, name);
1160                 img->flash_base = flash_addr;
1161                 img->mem_base = exec_addr_set ? exec_addr : (mem_addr_set ? mem_addr : flash_addr);
1162                 img->entry_point = entry_addr_set ? entry_addr : (CYG_ADDRESS)entry_address;  // Hope it's been set
1163                 img->size = length;
1164                 img->data_length = img_size;
1165 #ifdef CYGSEM_REDBOOT_FIS_CRC_CHECK
1166                 if (!no_copy) {
1167                         img->file_cksum = cyg_crc32((unsigned char *)mem_addr, img_size);
1168                 } else {
1169                         // No way to compute this, sorry
1170                         img->file_cksum = 0;
1171                 }
1172 #endif
1173                 fis_start_update_directory(0);
1174                 fis_update_directory(0, 0);
1175     }
1176 }
1177
1178 extern void arm_fis_delete(char *);
1179 static void
1180 fis_delete(int argc, char *argv[])
1181 {
1182     char *name;
1183     int num_reserved, i, stat;
1184     void *err_addr;
1185     struct fis_image_desc *img;
1186
1187     if (!scan_opts(argc, argv, 2, 0, 0, &name, OPTION_ARG_TYPE_STR, "image name")) {
1188                 fis_usage("invalid arguments");
1189                 return;
1190         }
1191 #ifdef CYGHWR_REDBOOT_ARM_FLASH_SIB
1192     // FIXME: this is somewhat half-baked
1193     arm_fis_delete(name);
1194     return;
1195 #endif
1196     img = (struct fis_image_desc *)fis_work_block;
1197     num_reserved = 0;
1198 #ifdef CYGOPT_REDBOOT_FIS_RESERVED_BASE
1199     num_reserved++;
1200 #endif
1201 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT
1202     num_reserved++;
1203 #endif
1204 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT_BACKUP
1205     num_reserved++;
1206 #endif
1207 #ifdef CYGOPT_REDBOOT_FIS_REDBOOT_POST
1208     num_reserved++;
1209 #endif
1210 #if defined(CYGSEM_REDBOOT_FLASH_CONFIG) && defined(CYGHWR_REDBOOT_FLASH_CONFIG_MEDIA_FLASH)
1211     num_reserved++;
1212 #endif
1213 #if 1 // And the descriptor for the descriptor table itself
1214     num_reserved++;
1215 #endif
1216
1217     img = fis_lookup(name, &i);
1218     if (img) {
1219         if (i < num_reserved) {
1220             diag_printf("Sorry, '%s' is a reserved image and cannot be deleted\n", img->u.name);
1221             return;
1222         }
1223         if (!verify_action("Delete image '%s'", name)) {
1224             return;
1225         }
1226     } else {
1227                 diag_printf("No image '%s' found\n", name);
1228         return;
1229     }
1230     // Erase Data blocks (free space)
1231     if ((stat = flash_erase((void *)img->flash_base, img->size, &err_addr)) != 0) {
1232                 diag_printf("Error erasing at %p: %s\n", err_addr, flash_errmsg(stat));
1233     } else {
1234                 img->u.name[0] = 0xFF;
1235                 fis_start_update_directory(0);
1236                 fis_update_directory(0, 0);
1237     }
1238 }
1239
1240 static void
1241 fis_load(int argc, char *argv[])
1242 {
1243     char *name;
1244     struct fis_image_desc *img;
1245     CYG_ADDRESS mem_addr;
1246     bool mem_addr_set = false;
1247     bool show_cksum = false;
1248     bool load_ce = false;
1249     struct option_info opts[4];
1250 #if defined(CYGSEM_REDBOOT_FIS_CRC_CHECK)
1251     unsigned long cksum;
1252 #endif
1253     int num_options = 0;
1254 #if defined(CYGPRI_REDBOOT_ZLIB_FLASH) ||  defined(CYGSEM_REDBOOT_FIS_CRC_CHECK)
1255     bool decompress = false;
1256 #endif
1257     void *err_addr;
1258
1259     init_opts(&opts[num_options++], 'b', true, OPTION_ARG_TYPE_NUM,
1260                           &mem_addr, &mem_addr_set, "memory [load] base address");
1261     init_opts(&opts[num_options++], 'c', false, OPTION_ARG_TYPE_FLG,
1262                           &show_cksum, NULL, "display checksum");
1263 #ifdef CYGBLD_BUILD_REDBOOT_WITH_WINCE_SUPPORT
1264     init_opts(&opts[num_options++], 'w', false, OPTION_ARG_TYPE_FLG,
1265                           &load_ce, NULL, "parse as Windows CE image");
1266 #endif
1267 #ifdef CYGPRI_REDBOOT_ZLIB_FLASH
1268     init_opts(&opts[num_options++], 'd', false, OPTION_ARG_TYPE_FLG,
1269                           &decompress, 0, "decompress");
1270 #endif
1271
1272     CYG_ASSERT(num_options <= num_options, "Too many options");
1273
1274     if (!scan_opts(argc, argv, 2, opts, num_options, &name,
1275                                    OPTION_ARG_TYPE_STR, "image name")) {
1276                 fis_usage("invalid arguments");
1277                 return;
1278     }
1279     if ((img = fis_lookup(name, NULL)) == NULL) {
1280                 diag_printf("No image '%s' found\n", name);
1281                 return;
1282     }
1283     if (!mem_addr_set || load_ce) {
1284                 mem_addr = img->mem_base;
1285     }
1286     // Load image from FLASH into RAM
1287 #ifdef CYGSEM_REDBOOT_VALIDATE_USER_RAM_LOADS
1288     if (!valid_address((void *)mem_addr)) {
1289                 if (!load_ce) {
1290                         diag_printf("Not a loadable image - try using -b ADDRESS option\n");
1291                 } else {
1292                         diag_printf("Not a loadable image\n");
1293                 }
1294                 return;
1295     }
1296 #endif
1297 #ifdef CYGBLD_BUILD_REDBOOT_WITH_WINCE_SUPPORT
1298     if (load_ce) {
1299                 if (mem_addr_set) {
1300                         diag_printf("Warning: -b argument ignored for Windows CE image\n");
1301                 }
1302                 FLASH_Enable((void *)img->flash_base, (void *)(img->flash_base + img->size));
1303                 if (!ce_is_bin_image((void *)img->flash_base, img->size)) {
1304                         diag_printf("** Error: This does not seem to be a valid Windows CE image\n");
1305                         return;
1306                 }
1307                 if (!ce_bin_load((void *)img->flash_base, img->size)) {
1308                         diag_printf("** Error: Failed to load Windows CE image\n");
1309                 }
1310                 FLASH_Disable((void *)img->flash_base, (void *)(img->flash_base + img->size));
1311                 // Set load address/top
1312                 load_address = mem_addr;
1313                 load_address_end = mem_addr + img->data_length;
1314                 return;
1315     }
1316 #endif
1317 #ifdef CYGPRI_REDBOOT_ZLIB_FLASH
1318     if (decompress) {
1319                 int err;
1320                 _pipe_t fis_load_pipe;
1321                 _pipe_t *p = &fis_load_pipe;
1322                 p->out_buf = (unsigned char*) mem_addr;
1323                 p->out_max = p->out_size = -1;
1324                 p->in_buf = (unsigned char*) img->flash_base;
1325                 p->in_avail = img->data_length;
1326
1327                 err = (*_dc_init)(p);
1328
1329                 if (0 == err)
1330                         err = (*_dc_inflate)(p);
1331
1332                 // Free used resources, do final translation of
1333                 // error value.
1334                 err = (*_dc_close)(p, err);
1335
1336                 if (0 != err && p->msg) {
1337                         diag_printf("decompression error: %s\n", p->msg);
1338                 } else {
1339                         diag_printf("Image loaded from %p-%p\n", (unsigned char *)mem_addr, p->out_buf);
1340                 }
1341
1342                 // Set load address/top
1343                 load_address = mem_addr;
1344                 load_address_end = (unsigned long)p->out_buf;
1345
1346                 // Reload fis directory
1347                 fis_read_directory();
1348     } else // dangling block
1349 #endif
1350                 {
1351                         int err;
1352
1353                         FLASH_Enable((void *)img->flash_base, (void *)(img->flash_base + img->size));
1354                         err = flash_read((void *)img->flash_base, (void *)mem_addr,
1355                                                          img->data_length, &err_addr);
1356                         FLASH_Disable((void *)img->flash_base, (void *)(img->flash_base + img->size));
1357                         if (err != FLASH_ERR_OK) {
1358                                 diag_printf("** Error: Failed to load image from flash\n");
1359                                 return;
1360                         }
1361
1362                         // Set load address/top
1363                         load_address = mem_addr;
1364                         load_address_end = mem_addr + img->data_length;
1365                 }
1366     entry_address = (unsigned long)img->entry_point;
1367
1368 #ifdef CYGSEM_REDBOOT_FIS_CRC_CHECK
1369     cksum = cyg_crc32((unsigned char *)mem_addr, img->data_length);
1370     if (show_cksum) {
1371                 diag_printf("Checksum: 0x%08lx\n", cksum);
1372     }
1373     // When decompressing, leave CRC checking to decompressor
1374     if (!decompress && img->file_cksum) {
1375                 if (cksum != img->file_cksum) {
1376                         diag_printf("** Warning - checksum failure.      stored: 0x%08lx, computed: 0x%08lx\n",
1377                                                 img->file_cksum, cksum);
1378                         entry_address = (unsigned long)NO_MEMORY;
1379                 }
1380     }
1381 #endif
1382     diag_printf("image loaded 0x%08lx-0x%08lx, assumed entry at 0x%08lx\n",
1383                                 load_address, load_address_end - 1, entry_address);
1384 }
1385 #endif // CYGOPT_REDBOOT_FIS
1386
1387 static void
1388 fis_write(int argc, char *argv[])
1389 {
1390     int stat;
1391     unsigned long length;
1392     CYG_ADDRESS mem_addr, flash_addr;
1393     bool mem_addr_set = false;
1394     bool flash_addr_set = false;
1395     bool length_set = false;
1396     void *err_addr;
1397     struct option_info opts[3];
1398     bool prog_ok;
1399
1400     init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM,
1401                           &mem_addr, &mem_addr_set, "memory base address");
1402     init_opts(&opts[1], 'f', true, OPTION_ARG_TYPE_NUM,
1403                           &flash_addr, &flash_addr_set, "FLASH memory base address");
1404     init_opts(&opts[2], 'l', true, OPTION_ARG_TYPE_NUM,
1405                           &length, &length_set, "image length [in FLASH]");
1406     if (!scan_opts(argc, argv, 2, opts, 3, 0, 0, 0))
1407                 {
1408                         fis_usage("invalid arguments");
1409                         return;
1410                 }
1411
1412     if (!mem_addr_set || !flash_addr_set || !length_set) {
1413                 fis_usage("required parameter missing");
1414                 return;
1415     }
1416
1417     // Round up length to FLASH block size
1418 #ifndef CYGPKG_HAL_MIPS // FIXME: compiler is b0rken
1419     length = ((length + flash_block_size - 1) / flash_block_size) * flash_block_size;
1420 #endif
1421     if (flash_addr_set &&
1422                 ((stat = flash_verify_addr((void *)flash_addr)) ||
1423                  (stat = flash_verify_addr((void *)(flash_addr + length - 1))))) {
1424                 _show_invalid_flash_address(flash_addr, stat);
1425                 return;
1426     }
1427     if (flash_addr_set && flash_addr & (flash_block_size-1)) {
1428                 diag_printf("Invalid FLASH address: %p\n", (void *)flash_addr);
1429                 diag_printf("   must be 0x%x aligned\n", flash_block_size);
1430                 return;
1431     }
1432     if ((mem_addr < (CYG_ADDRESS)ram_start) ||
1433                 ((mem_addr + length) >= (CYG_ADDRESS)ram_end)) {
1434                 diag_printf("** WARNING: RAM address: %p may be invalid\n", (void *)mem_addr);
1435                 diag_printf("   valid range is %p-%p\n", (void *)ram_start, (void *)ram_end);
1436     }
1437     // Safety check - make sure the address range is not within the code we're running
1438     if (flash_code_overlaps((void *)flash_addr, (void *)(flash_addr + length - 1))) {
1439                 diag_printf("Can't program this region - contains code in use!\n");
1440                 return;
1441     }
1442     if (!verify_action("* CAUTION * about to program FLASH\n            at %p..%p from %p",
1443                                            (void *)flash_addr, (void *)(flash_addr + length - 1),
1444                                            (void *)mem_addr)) {
1445                 return;  // The guy gave up
1446     }
1447     prog_ok = true;
1448     if (prog_ok) {
1449                 // Erase area to be programmed
1450                 if ((stat = flash_erase((void *)flash_addr, length, &err_addr)) != 0) {
1451                         diag_printf("Can't erase region at %p: %s\n", err_addr, flash_errmsg(stat));
1452                         prog_ok = false;
1453                 }
1454     }
1455     if (prog_ok) {
1456                 // Now program it
1457                 stat = FLASH_PROGRAM((void *)flash_addr, (void *)mem_addr, length, &err_addr);
1458                 if (stat != 0) {
1459                         diag_printf("Can't program region at %p: %s\n", err_addr, flash_errmsg(stat));
1460                         prog_ok = false;
1461                 }
1462     }
1463 }
1464
1465 static void
1466 fis_erase(int argc, char *argv[])
1467 {
1468     int stat;
1469     unsigned long length;
1470     CYG_ADDRESS flash_addr;
1471     bool flash_addr_set = false;
1472     bool length_set = false;
1473     void *err_addr;
1474     struct option_info opts[2];
1475
1476     init_opts(&opts[0], 'f', true, OPTION_ARG_TYPE_NUM,
1477                           &flash_addr, &flash_addr_set, "FLASH memory base address");
1478     init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,
1479                           &length, &length_set, "length");
1480     if (!scan_opts(argc, argv, 2, opts, 2, NULL, 0, NULL))
1481                 {
1482                         fis_usage("invalid arguments");
1483                         return;
1484                 }
1485
1486     if (!flash_addr_set || !length_set) {
1487                 fis_usage("missing argument");
1488                 return;
1489     }
1490     if (flash_addr_set &&
1491                 ((stat = flash_verify_addr((void *)flash_addr)) ||
1492                  (stat = flash_verify_addr((void *)(flash_addr + length - 1))))) {
1493                 _show_invalid_flash_address(flash_addr, stat);
1494                 return;
1495     }
1496     if (flash_addr_set && flash_addr & (flash_block_size-1)) {
1497                 diag_printf("Invalid FLASH address: %p\n", (void *)flash_addr);
1498                 diag_printf("   must be 0x%x aligned\n", flash_block_size);
1499                 return;
1500     }
1501     // Safety check - make sure the address range is not within the code we're running
1502     if (flash_code_overlaps((void *)flash_addr, (void *)(flash_addr + length - 1))) {
1503                 diag_printf("Can't erase this region - contains code in use!\n");
1504                 return;
1505     }
1506     if ((stat = flash_erase((void *)flash_addr, length, &err_addr)) != 0) {
1507                 diag_printf("Error erasing at %p: %s\n", err_addr, flash_errmsg(stat));
1508     }
1509 }
1510
1511 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1512
1513 static void
1514 fis_lock(int argc, char *argv[])
1515 {
1516     char *name;
1517     int stat;
1518     unsigned long length;
1519     CYG_ADDRESS flash_addr;
1520     bool flash_addr_set = false;
1521     bool length_set = false;
1522     void *err_addr;
1523     struct option_info opts[2];
1524
1525     init_opts(&opts[0], 'f', true, OPTION_ARG_TYPE_NUM,
1526                           &flash_addr, &flash_addr_set, "FLASH memory base address");
1527     init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,
1528                           &length, &length_set, "length");
1529     if (!scan_opts(argc, argv, 2, opts, 2, &name, OPTION_ARG_TYPE_STR, "image name")) {
1530                 fis_usage("invalid arguments");
1531                 return;
1532         }
1533 #ifdef CYGOPT_REDBOOT_FIS
1534     /* Get parameters from image if specified */
1535     if (name) {
1536                 struct fis_image_desc *img;
1537                 if ((img = fis_lookup(name, NULL)) == NULL) {
1538                         diag_printf("No image '%s' found\n", name);
1539                         return;
1540                 }
1541
1542                 flash_addr = img->flash_base;
1543                 length = img->size;
1544     } else
1545 #endif
1546                 if (!flash_addr_set || !length_set) {
1547                         fis_usage("missing argument");
1548                         return;
1549                 }
1550     if (flash_addr_set &&
1551                 ((stat = flash_verify_addr((void *)flash_addr)) ||
1552                  (stat = flash_verify_addr((void *)(flash_addr + length - 1))))) {
1553                 _show_invalid_flash_address(flash_addr, stat);
1554                 return;
1555     }
1556     if ((stat = flash_lock((void *)flash_addr, length, &err_addr)) != 0) {
1557                 diag_printf("Error locking at %p: %s\n", err_addr, flash_errmsg(stat));
1558     }
1559 }
1560
1561 static void
1562 fis_unlock(int argc, char *argv[])
1563 {
1564     char *name;
1565     int stat;
1566     unsigned long length;
1567     CYG_ADDRESS flash_addr;
1568     bool flash_addr_set = false;
1569     bool length_set = false;
1570     void *err_addr;
1571     struct option_info opts[2];
1572
1573     init_opts(&opts[0], 'f', true, OPTION_ARG_TYPE_NUM,
1574                           &flash_addr, &flash_addr_set, "FLASH memory base address");
1575     init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,
1576                           &length, &length_set, "length");
1577     if (!scan_opts(argc, argv, 2, opts, 2, &name, OPTION_ARG_TYPE_STR, "image name")) {
1578                 fis_usage("invalid arguments");
1579                 return;
1580         }
1581 #ifdef CYGOPT_REDBOOT_FIS
1582     if (name) {
1583                 struct fis_image_desc *img;
1584                 if ((img = fis_lookup(name, NULL)) == NULL) {
1585                         diag_printf("No image '%s' found\n", name);
1586                         return;
1587                 }
1588
1589                 flash_addr = img->flash_base;
1590                 length = img->size;
1591     } else
1592 #endif
1593                 if (!flash_addr_set || !length_set) {
1594                         fis_usage("missing argument");
1595                         return;
1596                 }
1597     if (flash_addr_set &&
1598                 ((stat = flash_verify_addr((void *)flash_addr)) ||
1599                  (stat = flash_verify_addr((void *)(flash_addr + length - 1))))) {
1600                 _show_invalid_flash_address(flash_addr, stat);
1601                 return;
1602     }
1603
1604     if ((stat = flash_unlock((void *)flash_addr, length, &err_addr)) != 0) {
1605                 diag_printf("Error unlocking at %p: %s\n", err_addr, flash_errmsg(stat));
1606     }
1607 }
1608 #endif
1609
1610 // This is set non-zero if the FLASH subsystem has successfully been initialized
1611 int __flash_init = 0;
1612
1613 void
1614 _flash_info(void)
1615 {
1616     if (!__flash_init) return;
1617     diag_printf("FLASH: %p - 0x%x, %d blocks of 0x%08x bytes each.\n",
1618                                 flash_start, (CYG_ADDRWORD)flash_end + 1, flash_num_blocks, flash_block_size);
1619 }
1620
1621 /* Returns -1 on failure, 0 on success, 1 if it was successfull
1622  but a failed fis update was detected  */
1623 int
1624 do_flash_init(void)
1625 {
1626         int stat;
1627
1628 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
1629         struct fis_image_desc img0;
1630         struct fis_image_desc img1;
1631         int fis_update_was_interrupted = 0;
1632         void *err_addr;
1633
1634         //check the size of fis_valid_info
1635         CYG_ASSERT((sizeof(struct fis_valid_info) <= sizeof(img0.u.name)),
1636                            "fis_valid_info size mismatch");
1637         //try to check the alignment of version_count
1638         CYG_ASSERT(((&img0.u.valid_info.version_count - &img0) % sizeof(unsigned long) == 0),
1639                            "alignment problem");
1640 #endif
1641         if (!__flash_init) {
1642                 __flash_init = 1;
1643                 if ((stat = flash_init(diag_printf)) != 0) {
1644                         diag_printf("FLASH: driver init failed: %s\n", flash_errmsg(stat));
1645                         return -1;
1646                 }
1647                 flash_get_limits(NULL, &flash_start, &flash_end);
1648                 // Keep 'end' address as last valid location, to avoid wrap around problems
1649                 flash_end = (void *)((CYG_ADDRESS)flash_end - 1);
1650                 flash_get_block_info(&flash_block_size, &flash_num_blocks);
1651 #ifdef CYGOPT_REDBOOT_FIS
1652                 fisdir_size = CYGNUM_REDBOOT_FIS_DIRECTORY_ENTRY_COUNT * CYGNUM_REDBOOT_FIS_DIRECTORY_ENTRY_SIZE;
1653                 fisdir_size = ((fisdir_size + flash_block_size - 1) / flash_block_size) * flash_block_size;
1654 # if defined(CYGPRI_REDBOOT_ZLIB_FLASH) && defined(CYGOPT_REDBOOT_FIS_ZLIB_COMMON_BUFFER)
1655                 fis_work_block = fis_zlib_common_buffer;
1656                 if (CYGNUM_REDBOOT_FIS_ZLIB_COMMON_BUFFER_SIZE < fisdir_size) {
1657                         diag_printf("FLASH: common buffer too small\n");
1658                         return -1;
1659                 }
1660 # else
1661                 workspace_end = (unsigned char *)(workspace_end - fisdir_size);
1662                 fis_work_block = workspace_end;
1663 # endif
1664                 if (CYGNUM_REDBOOT_FIS_DIRECTORY_BLOCK < 0) {
1665                         fis_addr = (void *)((CYG_ADDRESS)flash_end + 1 +
1666                                                                 (CYGNUM_REDBOOT_FIS_DIRECTORY_BLOCK * flash_block_size));
1667                 } else {
1668                         fis_addr = (void *)((CYG_ADDRESS)flash_start +
1669                                                                 (CYGNUM_REDBOOT_FIS_DIRECTORY_BLOCK * flash_block_size));
1670                 }
1671 #if defined(CYGHWR_DEVS_FLASH_MXC_MULTI) && defined(MXCFLASH_SELECT_NAND)
1672                 extern int mxc_nand_fis_start(void);
1673                 if (IS_FIS_FROM_NAND()) {
1674                         fis_addr = (void *)((CYG_ADDRESS)flash_start + mxc_nand_fis_start());
1675                 }
1676 #endif
1677
1678 #if defined(IMXFLASH_SELECT_SPI_NOR)
1679                 extern int mxc_spi_nor_fis_start(void);
1680                 if (IS_FIS_FROM_SPI_NOR()) {
1681                         fis_addr = (void *)((CYG_ADDRESS)flash_start + mxc_spi_nor_fis_start());
1682                 }
1683 #endif
1684
1685 #if defined(MXCFLASH_SELECT_MMC)
1686                 if (IS_FIS_FROM_MMC()) {
1687                         fis_addr = (void *)REDBOOT_IMAGE_SIZE;
1688                 }
1689 #endif
1690
1691                 if (((CYG_ADDRESS)fis_addr + fisdir_size - 1) > (CYG_ADDRESS)flash_end) {
1692                         diag_printf("FIS directory doesn't fit\n");
1693                         return -1;
1694                 }
1695 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
1696
1697                 if (CYGNUM_REDBOOT_FIS_REDUNDANT_DIRECTORY_BLOCK < 0) {
1698                         redundant_fis_addr = (void *)((CYG_ADDRESS)flash_end + 1 +
1699                                                                                   (CYGNUM_REDBOOT_FIS_REDUNDANT_DIRECTORY_BLOCK *
1700                                                                                    flash_block_size));
1701                 } else {
1702                         redundant_fis_addr = (void *)((CYG_ADDRESS)flash_start +
1703                                                                                   (CYGNUM_REDBOOT_FIS_REDUNDANT_DIRECTORY_BLOCK *
1704                                                                                    flash_block_size));
1705                 }
1706
1707                 if (((CYG_ADDRESS)redundant_fis_addr + fisdir_size - 1) > (CYG_ADDRESS)flash_end) {
1708                         diag_printf("Redundant FIS directory doesn't fit\n");
1709                         return -1;
1710                 }
1711                 FLASH_READ(fis_addr, &img0, sizeof(img0), &err_addr);
1712                 FLASH_READ(redundant_fis_addr, &img1, sizeof(img1), &err_addr);
1713
1714                 if (strncmp(img0.u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC,
1715                                         CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH) != 0) {
1716                                 memset(&img0, 0, sizeof(img0));
1717                         }
1718
1719                 if (strncmp(img1.u.valid_info.magic_name, CYG_REDBOOT_RFIS_VALID_MAGIC,
1720                                         CYG_REDBOOT_RFIS_VALID_MAGIC_LENGTH) != 0) {
1721                         memset(&img1, 0, sizeof(img0));
1722                 }
1723
1724 #ifdef REDBOOT_FLASH_REVERSE_BYTEORDER
1725                 img0.u.valid_info.version_count = CYG_SWAP32(img0.u.valid_info.version_count);
1726                 img1.u.valid_info.version_count = CYG_SWAP32(img1.u.valid_info.version_count);
1727 #endif
1728
1729                 if (fis_get_valid_buf(&img0, &img1, &fis_update_was_interrupted) == 1) {
1730                         // Valid, so swap primary and secondary
1731                         void *tmp;
1732                         tmp = fis_addr;
1733                         fis_addr = redundant_fis_addr;
1734                         redundant_fis_addr = tmp;
1735                 }
1736 #endif
1737                 fis_read_directory();
1738 #endif
1739         }
1740 #ifdef CYGOPT_REDBOOT_REDUNDANT_FIS
1741         if (fis_update_was_interrupted)
1742                 return 1;
1743         else
1744                 return 0;
1745 #else
1746         return 0;
1747 #endif
1748 }
1749
1750 // Wrapper to avoid compiler warnings
1751 static void
1752 _do_flash_init(void)
1753 {
1754     static int init_done = 0;
1755     if (init_done) return;
1756     init_done = 1;
1757     do_flash_init();
1758 }
1759
1760 RedBoot_init(_do_flash_init, RedBoot_INIT_FIRST);
1761
1762 static void
1763 do_fis(int argc, char *argv[])
1764 {
1765     struct cmd *cmd;
1766
1767     if (argc < 2) {
1768                 fis_usage("too few arguments");
1769                 return;
1770     }
1771     if (do_flash_init() < 0) {
1772         diag_printf("Sorry, no FLASH memory is available\n");
1773         return;
1774     }
1775     if ((cmd = cmd_search(__FIS_cmds_TAB__, &__FIS_cmds_TAB_END__,
1776                           argv[1])) != NULL) {
1777                 (cmd->fun)(argc, argv);
1778                 return;
1779     }
1780     fis_usage("unrecognized command");
1781 }