board/mcc200/auto_update.c

   1 /*
   2  * (C) Copyright 2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  * MA 02111-1307 USA
  19  */
  20 #include <common.h>
  21 #include <command.h>
  22 #include <malloc.h>
  23 #include <image.h>
  24 #include <asm/byteorder.h>
  25 #include <usb.h>
  26 #include <part.h>
  27
  28 #ifdef CFG_HUSH_PARSER
  29 #include <hush.h>
  30 #endif
  31
  32
  33 #ifdef CONFIG_AUTO_UPDATE
  34
  35 #ifndef CONFIG_USB_OHCI
  36 #error "must define CONFIG_USB_OHCI"
  37 #endif
  38
  39 #ifndef CONFIG_USB_STORAGE
  40 #error "must define CONFIG_USB_STORAGE"
  41 #endif
  42
  43 #ifndef CFG_HUSH_PARSER
  44 #error "must define CFG_HUSH_PARSER"
  45 #endif
  46
  47 #if !defined(CONFIG_CMD_FAT)
  48 #error "must define CONFIG_CMD_FAT"
  49 #endif
  50
  51 #undef AU_DEBUG
  52
  53 #undef debug
  54 #ifdef  AU_DEBUG
  55 #define debug(fmt,args...)      printf (fmt ,##args)
  56 #else
  57 #define debug(fmt,args...)
  58 #endif  /* AU_DEBUG */
  59
  60 /* possible names of files on the USB stick. */
  61 #define AU_FIRMWARE     "u-boot.img"
  62 #define AU_KERNEL       "kernel.img"
  63 #define AU_ROOTFS       "rootfs.img"
  64
  65 struct flash_layout {
  66         long start;
  67         long end;
  68 };
  69
  70 /* layout of the FLASH. ST = start address, ND = end address. */
  71 #define AU_FL_FIRMWARE_ST       0xfC000000
  72 #define AU_FL_FIRMWARE_ND       0xfC03FFFF
  73 #define AU_FL_KERNEL_ST         0xfC0C0000
  74 #define AU_FL_KERNEL_ND         0xfC1BFFFF
  75 #define AU_FL_ROOTFS_ST         0xFC1C0000
  76 #define AU_FL_ROOTFS_ND         0xFCFBFFFF
  77
  78 static int au_usb_stor_curr_dev; /* current device */
  79
  80 /* index of each file in the following arrays */
  81 #define IDX_FIRMWARE    0
  82 #define IDX_KERNEL      1
  83 #define IDX_ROOTFS      2
  84
  85 /* max. number of files which could interest us */
  86 #define AU_MAXFILES 3
  87
  88 /* pointers to file names */
  89 char *aufile[AU_MAXFILES] = {
  90         AU_FIRMWARE,
  91         AU_KERNEL,
  92         AU_ROOTFS
  93 };
  94
  95 /* sizes of flash areas for each file */
  96 long ausize[AU_MAXFILES] = {
  97         (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST,
  98         (AU_FL_KERNEL_ND   + 1) - AU_FL_KERNEL_ST,
  99         (AU_FL_ROOTFS_ND   + 1) - AU_FL_ROOTFS_ST,
 100 };
 101
 102 /* array of flash areas start and end addresses */
 103 struct flash_layout aufl_layout[AU_MAXFILES] = {
 104         { AU_FL_FIRMWARE_ST,    AU_FL_FIRMWARE_ND, },
 105         { AU_FL_KERNEL_ST,      AU_FL_KERNEL_ND,   },
 106         { AU_FL_ROOTFS_ST,      AU_FL_ROOTFS_ND,   },
 107 };
 108
 109 ulong totsize;
 110
 111 /* where to load files into memory */
 112 #define LOAD_ADDR ((unsigned char *)0x00200000)
 113
 114 /* the root file system is the largest image */
 115 #define MAX_LOADSZ ausize[IDX_ROOTFS]
 116
 117 /*i2c address of the keypad status*/
 118 #define I2C_PSOC_KEYPAD_ADDR    0x53
 119
 120 /* keypad mask */
 121 #define KEYPAD_ROW      2
 122 #define KEYPAD_COL      2
 123 #define KEYPAD_MASK_LO  ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))&0xFF)
 124 #define KEYPAD_MASK_HI  ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))>>8)
 125
 126 /* externals */
 127 extern int fat_register_device(block_dev_desc_t *, int);
 128 extern int file_fat_detectfs(void);
 129 extern long file_fat_read(const char *, void *, unsigned long);
 130 extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int);
 131 extern int flash_sect_erase(ulong, ulong);
 132 extern int flash_sect_protect (int, ulong, ulong);
 133 extern int flash_write (char *, ulong, ulong);
 134 extern int u_boot_hush_start(void);
 135 #ifdef CONFIG_PROGRESSBAR
 136 extern void show_progress(int, int);
 137 extern void lcd_puts (char *);
 138 extern void lcd_enable(void);
 139 #endif
 140
 141 int au_check_cksum_valid(int idx, long nbytes)
 142 {
 143         image_header_t *hdr;
 144
 145         hdr = (image_header_t *)LOAD_ADDR;
 146 #if defined(CONFIG_FIT)
 147         if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
 148                 puts ("Non legacy image format not supported\n");
 149                 return -1;
 150         }
 151 #endif
 152
 153         if (nbytes != image_get_image_size (hdr)) {
 154                 printf ("Image %s bad total SIZE\n", aufile[idx]);
 155                 return -1;
 156         }
 157         /* check the data CRC */
 158         if (!image_check_dcrc (hdr)) {
 159                 printf ("Image %s bad data checksum\n", aufile[idx]);
 160                 return -1;
 161         }
 162         return 0;
 163 }
 164
 165 int au_check_header_valid(int idx, long nbytes)
 166 {
 167         image_header_t *hdr;
 168         unsigned long checksum, fsize;
 169
 170         hdr = (image_header_t *)LOAD_ADDR;
 171 #if defined(CONFIG_FIT)
 172         if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
 173                 puts ("Non legacy image format not supported\n");
 174                 return -1;
 175         }
 176 #endif
 177
 178         /* check the easy ones first */
 179 #undef CHECK_VALID_DEBUG
 180 #ifdef CHECK_VALID_DEBUG
 181         printf("magic %#x %#x ", image_get_magic (hdr), IH_MAGIC);
 182         printf("arch %#x %#x ", image_get_arch (hdr), IH_ARCH_ARM);
 183         printf("size %#x %#lx ", image_get_data_size (hdr), nbytes);
 184         printf("type %#x %#x ", image_get_type (hdr), IH_TYPE_KERNEL);
 185 #endif
 186         if (nbytes < image_get_header_size ()) {
 187                 printf ("Image %s bad header SIZE\n", aufile[idx]);
 188                 ausize[idx] = 0;
 189                 return -1;
 190         }
 191         if (!image_check_magic (hdr) || !image_check_arch (hdr, IH_ARCH_PPC)) {
 192                 printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]);
 193                 ausize[idx] = 0;
 194                 return -1;
 195         }
 196         /* check the hdr CRC */
 197         if (!image_check_hcrc (hdr)) {
 198                 printf ("Image %s bad header checksum\n", aufile[idx]);
 199                 ausize[idx] = 0;
 200                 return -1;
 201         }
 202         /* check the type - could do this all in one gigantic if() */
 203         if ((idx == IDX_FIRMWARE) && !image_check_type (hdr, IH_TYPE_FIRMWARE)) {
 204                 printf ("Image %s wrong type\n", aufile[idx]);
 205                 ausize[idx] = 0;
 206                 return -1;
 207         }
 208         if ((idx == IDX_KERNEL) && !image_check_type (hdr, IH_TYPE_KERNEL)) {
 209                 printf ("Image %s wrong type\n", aufile[idx]);
 210                 ausize[idx] = 0;
 211                 return -1;
 212         }
 213         if ((idx == IDX_ROOTFS) &&
 214                         (!image_check_type (hdr, IH_TYPE_RAMDISK) &&
 215                         !image_check_type (hdr, IH_TYPE_FILESYSTEM))) {
 216                 printf ("Image %s wrong type\n", aufile[idx]);
 217                 ausize[idx] = 0;
 218                 return -1;
 219         }
 220         /* recycle checksum */
 221         checksum = image_get_data_size (hdr);
 222
 223         fsize = checksum + image_get_header_size ();
 224         /* for kernel and ramdisk the image header must also fit into flash */
 225         if (idx == IDX_KERNEL || image_check_type (hdr, IH_TYPE_RAMDISK))
 226                 checksum += image_get_header_size ();
 227
 228         /* check the size does not exceed space in flash. HUSH scripts */
 229         if ((ausize[idx] != 0) && (ausize[idx] < checksum)) {
 230                 printf ("Image %s is bigger than FLASH\n", aufile[idx]);
 231                 ausize[idx] = 0;
 232                 return -1;
 233         }
 234         /* Update with the real filesize */
 235         ausize[idx] = fsize;
 236
 237         return checksum; /* return size to be written to flash */
 238 }
 239
 240 int au_do_update(int idx, long sz)
 241 {
 242         image_header_t *hdr;
 243         char *addr;
 244         long start, end;
 245         int off, rc;
 246         uint nbytes;
 247
 248         hdr = (image_header_t *)LOAD_ADDR;
 249 #if defined(CONFIG_FIT)
 250         if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
 251                 puts ("Non legacy image format not supported\n");
 252                 return -1;
 253         }
 254 #endif
 255
 256         /* execute a script */
 257         if (image_check_type (hdr, IH_TYPE_SCRIPT)) {
 258                 addr = (char *)((char *)hdr + image_get_header_size ());
 259                 /* stick a NULL at the end of the script, otherwise */
 260                 /* parse_string_outer() runs off the end. */
 261                 addr[image_get_data_size (hdr)] = 0;
 262                 addr += 8;
 263                 parse_string_outer(addr, FLAG_PARSE_SEMICOLON);
 264                 return 0;
 265         }
 266
 267         start = aufl_layout[idx].start;
 268         end = aufl_layout[idx].end;
 269
 270         /* unprotect the address range */
 271         /* this assumes that ONLY the firmware is protected! */
 272         if (idx == IDX_FIRMWARE) {
 273 #undef AU_UPDATE_TEST
 274 #ifdef AU_UPDATE_TEST
 275                 /* erase it where Linux goes */
 276                 start = aufl_layout[1].start;
 277                 end = aufl_layout[1].end;
 278 #endif
 279                 flash_sect_protect(0, start, end);
 280         }
 281
 282         /*
 283          * erase the address range.
 284          */
 285         debug ("flash_sect_erase(%lx, %lx);\n", start, end);
 286         flash_sect_erase(start, end);
 287         wait_ms(100);
 288 #ifdef CONFIG_PROGRESSBAR
 289         show_progress(end - start, totsize);
 290 #endif
 291
 292         /* strip the header - except for the kernel and ramdisk */
 293         if (image_check_type (hdr, IH_TYPE_KERNEL) ||
 294                         image_check_type (hdr, IH_TYPE_RAMDISK)) {
 295                 addr = (char *)hdr;
 296                 off = image_get_header_size ();
 297                 nbytes = image_get_image_size (hdr);
 298         } else {
 299                 addr = (char *)((char *)hdr + image_get_header_size ());
 300 #ifdef AU_UPDATE_TEST
 301                 /* copy it to where Linux goes */
 302                 if (idx == IDX_FIRMWARE)
 303                         start = aufl_layout[1].start;
 304 #endif
 305                 off = 0;
 306                 nbytes = image_get_data_size (hdr);
 307         }
 308
 309         /* copy the data from RAM to FLASH */
 310         debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes);
 311         rc = flash_write(addr, start, nbytes);
 312         if (rc != 0) {
 313                 printf("Flashing failed due to error %d\n", rc);
 314                 return -1;
 315         }
 316
 317 #ifdef CONFIG_PROGRESSBAR
 318         show_progress(nbytes, totsize);
 319 #endif
 320
 321         /* check the data CRC of the copy */
 322         if (crc32 (0, (uchar *)(start + off), image_get_data_size (hdr)) !=
 323             image_get_dcrc (hdr)) {
 324                 printf ("Image %s Bad Data Checksum after COPY\n", aufile[idx]);
 325                 return -1;
 326         }
 327
 328         /* protect the address range */
 329         /* this assumes that ONLY the firmware is protected! */
 330         if (idx == IDX_FIRMWARE)
 331                 flash_sect_protect(1, start, end);
 332         return 0;
 333 }
 334
 335 /*
 336  * this is called from board_init() after the hardware has been set up
 337  * and is usable. That seems like a good time to do this.
 338  * Right now the return value is ignored.
 339  */
 340 int do_auto_update(void)
 341 {
 342         block_dev_desc_t *stor_dev;
 343         long sz;
 344         int i, res = 0, bitmap_first, cnt, old_ctrlc, got_ctrlc;
 345         char *env;
 346         long start, end;
 347
 348 #if 0 /* disable key-press detection to speed up boot-up time */
 349         uchar keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0};
 350
 351         /*
 352          * Read keypad status
 353          */
 354         i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status1, 2);
 355         wait_ms(500);
 356         i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status2, 2);
 357
 358         /*
 359          * Check keypad
 360          */
 361         if ( !(keypad_status1[1] & KEYPAD_MASK_LO) ||
 362               (keypad_status1[1] != keypad_status2[1])) {
 363                 return 0;
 364         }
 365
 366 #endif
 367         au_usb_stor_curr_dev = -1;
 368         /* start USB */
 369         if (usb_stop() < 0) {
 370                 debug ("usb_stop failed\n");
 371                 return -1;
 372         }
 373         if (usb_init() < 0) {
 374                 debug ("usb_init failed\n");
 375                 return -1;
 376         }
 377         /*
 378          * check whether a storage device is attached (assume that it's
 379          * a USB memory stick, since nothing else should be attached).
 380          */
 381         au_usb_stor_curr_dev = usb_stor_scan(0);
 382         if (au_usb_stor_curr_dev == -1) {
 383                 debug ("No device found. Not initialized?\n");
 384                 res = -1;
 385                 goto xit;
 386         }
 387         /* check whether it has a partition table */
 388         stor_dev = get_dev("usb", 0);
 389         if (stor_dev == NULL) {
 390                 debug ("uknown device type\n");
 391                 res = -1;
 392                 goto xit;
 393         }
 394         if (fat_register_device(stor_dev, 1) != 0) {
 395                 debug ("Unable to use USB %d:%d for fatls\n",
 396                         au_usb_stor_curr_dev, 1);
 397                 res = -1;
 398                 goto xit;
 399         }
 400         if (file_fat_detectfs() != 0) {
 401                 debug ("file_fat_detectfs failed\n");
 402         }
 403
 404         /*
 405          * now check whether start and end are defined using environment
 406          * variables.
 407          */
 408         start = -1;
 409         end = 0;
 410         env = getenv("firmware_st");
 411         if (env != NULL)
 412                 start = simple_strtoul(env, NULL, 16);
 413         env = getenv("firmware_nd");
 414         if (env != NULL)
 415                 end = simple_strtoul(env, NULL, 16);
 416         if (start >= 0 && end && end > start) {
 417                 ausize[IDX_FIRMWARE] = (end + 1) - start;
 418                 aufl_layout[IDX_FIRMWARE].start = start;
 419                 aufl_layout[IDX_FIRMWARE].end = end;
 420         }
 421         start = -1;
 422         end = 0;
 423         env = getenv("kernel_st");
 424         if (env != NULL)
 425                 start = simple_strtoul(env, NULL, 16);
 426         env = getenv("kernel_nd");
 427         if (env != NULL)
 428                 end = simple_strtoul(env, NULL, 16);
 429         if (start >= 0 && end && end > start) {
 430                 ausize[IDX_KERNEL] = (end + 1) - start;
 431                 aufl_layout[IDX_KERNEL].start = start;
 432                 aufl_layout[IDX_KERNEL].end = end;
 433         }
 434         start = -1;
 435         end = 0;
 436         env = getenv("rootfs_st");
 437         if (env != NULL)
 438                 start = simple_strtoul(env, NULL, 16);
 439         env = getenv("rootfs_nd");
 440         if (env != NULL)
 441                 end = simple_strtoul(env, NULL, 16);
 442         if (start >= 0 && end && end > start) {
 443                 ausize[IDX_ROOTFS] = (end + 1) - start;
 444                 aufl_layout[IDX_ROOTFS].start = start;
 445                 aufl_layout[IDX_ROOTFS].end = end;
 446         }
 447
 448         /* make certain that HUSH is runnable */
 449         u_boot_hush_start();
 450         /* make sure that we see CTRL-C and save the old state */
 451         old_ctrlc = disable_ctrlc(0);
 452
 453         bitmap_first = 0;
 454
 455         /* validate the images first */
 456         for (i = 0; i < AU_MAXFILES; i++) {
 457                 ulong imsize;
 458                 /* just read the header */
 459                 sz = file_fat_read(aufile[i], LOAD_ADDR, image_get_header_size ());
 460                 debug ("read %s sz %ld hdr %d\n",
 461                         aufile[i], sz, image_get_header_size ());
 462                 if (sz <= 0 || sz < image_get_header_size ()) {
 463                         debug ("%s not found\n", aufile[i]);
 464                         ausize[i] = 0;
 465                         continue;
 466                 }
 467                 /* au_check_header_valid() updates ausize[] */
 468                 if ((imsize = au_check_header_valid(i, sz)) < 0) {
 469                         debug ("%s header not valid\n", aufile[i]);
 470                         continue;
 471                 }
 472                 /* totsize accounts for image size and flash erase size */
 473                 totsize += (imsize + (aufl_layout[i].end - aufl_layout[i].start));
 474         }
 475
 476 #ifdef CONFIG_PROGRESSBAR
 477         if (totsize) {
 478                 lcd_puts(" Update in progress\n");
 479                 lcd_enable();
 480         }
 481 #endif
 482
 483         /* just loop thru all the possible files */
 484         for (i = 0; i < AU_MAXFILES && totsize; i++) {
 485                 if (!ausize[i]) {
 486                         continue;
 487                 }
 488                 sz = file_fat_read(aufile[i], LOAD_ADDR, ausize[i]);
 489
 490                 debug ("read %s sz %ld hdr %d\n",
 491                         aufile[i], sz, image_get_header_size ());
 492
 493                 if (sz != ausize[i]) {
 494                         printf ("%s: size %ld read %ld?\n", aufile[i], ausize[i], sz);
 495                         continue;
 496                 }
 497
 498                 if (sz <= 0 || sz <= image_get_header_size ()) {
 499                         debug ("%s not found\n", aufile[i]);
 500                         continue;
 501                 }
 502                 if (au_check_cksum_valid(i, sz) < 0) {
 503                         debug ("%s checksum not valid\n", aufile[i]);
 504                         continue;
 505                 }
 506                 /* this is really not a good idea, but it's what the */
 507                 /* customer wants. */
 508                 cnt = 0;
 509                 got_ctrlc = 0;
 510                 do {
 511                         res = au_do_update(i, sz);
 512                         /* let the user break out of the loop */
 513                         if (ctrlc() || had_ctrlc()) {
 514                                 clear_ctrlc();
 515                                 if (res < 0)
 516                                         got_ctrlc = 1;
 517                                 break;
 518                         }
 519                         cnt++;
 520 #ifdef AU_TEST_ONLY
 521                 } while (res < 0 && cnt < (AU_MAXFILES + 1));
 522                 if (cnt < (AU_MAXFILES + 1))
 523 #else
 524                 } while (res < 0);
 525 #endif
 526         }
 527
 528         /* restore the old state */
 529         disable_ctrlc(old_ctrlc);
 530 #ifdef CONFIG_PROGRESSBAR
 531         if (totsize) {
 532                 if (!res) {
 533                         lcd_puts("\n  Update completed\n");
 534                 } else {
 535                         lcd_puts("\n   Update error\n");
 536                 }
 537                 lcd_enable();
 538         }
 539 #endif
 540  xit:
 541         usb_stop();
 542         return res;
 543 }
 544 #endif /* CONFIG_AUTO_UPDATE */