board/musenki/flash.c

   1 /*
   2  * (C) Copyright 2001
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <mpc824x.h>
  10
  11 #if defined(CONFIG_ENV_IS_IN_FLASH)
  12 # ifndef  CONFIG_ENV_ADDR
  13 #  define CONFIG_ENV_ADDR       (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
  14 # endif
  15 # ifndef  CONFIG_ENV_SIZE
  16 #  define CONFIG_ENV_SIZE       CONFIG_ENV_SECT_SIZE
  17 # endif
  18 # ifndef  CONFIG_ENV_SECT_SIZE
  19 #  define CONFIG_ENV_SECT_SIZE  CONFIG_ENV_SIZE
  20 # endif
  21 #endif
  22
  23 /*---------------------------------------------------------------------*/
  24 #undef DEBUG_FLASH
  25
  26 #ifdef DEBUG_FLASH
  27 #define DEBUGF(fmt,args...) printf(fmt ,##args)
  28 #else
  29 #define DEBUGF(fmt,args...)
  30 #endif
  31 /*---------------------------------------------------------------------*/
  32
  33 flash_info_t    flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
  34
  35 /*-----------------------------------------------------------------------
  36  * Functions
  37  */
  38 static ulong flash_get_size (vu_char *addr, flash_info_t *info);
  39 static int write_data (flash_info_t *info, uchar *dest, uchar data);
  40 static void flash_get_offsets (ulong base, flash_info_t *info);
  41
  42
  43 /*
  44  * don't ask.  its stupid, but more than one soul has had to live with this mistake
  45  * "swaptab[i]" is the value of "i" with the bits reversed.
  46  */
  47
  48 #define  MUSENKI_BROKEN_FLASH 1
  49
  50 #ifdef MUSENKI_BROKEN_FLASH
  51 unsigned char swaptab[256] = {
  52   0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
  53   0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
  54   0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
  55   0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
  56   0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
  57   0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
  58   0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
  59   0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
  60   0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
  61   0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
  62   0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
  63   0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
  64   0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
  65   0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
  66   0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
  67   0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
  68   0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
  69   0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
  70   0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
  71   0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
  72   0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
  73   0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
  74   0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
  75   0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
  76   0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
  77   0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
  78   0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
  79   0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
  80   0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
  81   0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
  82   0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
  83   0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
  84 };
  85
  86 #define BS(b)     (swaptab[b])
  87
  88 #else
  89
  90 #define BS(b)     (b)
  91
  92 #endif
  93
  94 #define BYTEME(x) ((x) & 0xFF)
  95
  96 /*-----------------------------------------------------------------------
  97  */
  98
  99 unsigned long flash_init (void)
 100 {
 101         unsigned long size_b0, size_b1;
 102         int i;
 103
 104         /* Init: no FLASHes known */
 105         for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
 106                 flash_info[i].flash_id = FLASH_UNKNOWN;
 107         }
 108
 109         /* Static FLASH Bank configuration here - FIXME XXX */
 110
 111         DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",CONFIG_SYS_FLASH_BASE0_PRELIM);
 112
 113         size_b0 = flash_get_size((vu_char *)CONFIG_SYS_FLASH_BASE0_PRELIM, &flash_info[0]);
 114
 115         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
 116                 printf ("## Unknown FLASH on Bank 0: "
 117                         "ID 0x%lx, Size = 0x%08lx = %ld MB\n",
 118                         flash_info[0].flash_id,
 119                         size_b0, size_b0<<20);
 120         }
 121
 122         DEBUGF("## Get flash bank 2 size @ 0x%08x\n",CONFIG_SYS_FLASH_BASE1_PRELIM);
 123         size_b1 = flash_get_size((vu_char *)CONFIG_SYS_FLASH_BASE1_PRELIM, &flash_info[1]);
 124
 125         DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
 126
 127         flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
 128
 129         flash_info[0].size = size_b0;
 130
 131 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 132         DEBUGF("protect monitor %x @ %x\n", CONFIG_SYS_MONITOR_BASE, monitor_flash_len);
 133         /* monitor protection ON by default */
 134         flash_protect(FLAG_PROTECT_SET,
 135                       CONFIG_SYS_MONITOR_BASE,
 136                       CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
 137                       &flash_info[0]);
 138 #endif
 139
 140 #ifdef  CONFIG_ENV_IS_IN_FLASH
 141         /* ENV protection ON by default */
 142         DEBUGF("protect environtment %x @ %x\n", CONFIG_ENV_ADDR, CONFIG_ENV_SECT_SIZE);
 143         flash_protect(FLAG_PROTECT_SET,
 144                       CONFIG_ENV_ADDR,
 145                       CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
 146                       &flash_info[0]);
 147 #endif
 148
 149         if (size_b1) {
 150                 flash_info[1].size = size_b1;
 151                 flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]);
 152
 153 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 154                 /* monitor protection ON by default */
 155                 flash_protect(FLAG_PROTECT_SET,
 156                               CONFIG_SYS_MONITOR_BASE,
 157                               CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
 158                               &flash_info[1]);
 159 #endif
 160
 161 #ifdef  CONFIG_ENV_IS_IN_FLASH
 162                 /* ENV protection ON by default */
 163                 flash_protect(FLAG_PROTECT_SET,
 164                               CONFIG_ENV_ADDR,
 165                               CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
 166                               &flash_info[1]);
 167 #endif
 168         } else {
 169                 flash_info[1].flash_id = FLASH_UNKNOWN;
 170                 flash_info[1].sector_count = -1;
 171                 flash_info[1].size = 0;
 172         }
 173
 174         DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
 175
 176         return (size_b0 + size_b1);
 177 }
 178
 179 /*-----------------------------------------------------------------------
 180  */
 181 static void flash_get_offsets (ulong base, flash_info_t *info)
 182 {
 183         int i;
 184
 185         if (info->flash_id == FLASH_UNKNOWN) {
 186                 return;
 187         }
 188
 189         switch (info->flash_id & FLASH_VENDMASK) {
 190         case FLASH_MAN_INTEL:
 191             for (i = 0; i < info->sector_count; i++) {
 192                 info->start[i] = base;
 193                 base += 0x00020000;             /* 128k per bank */
 194             }
 195             return;
 196
 197         default:
 198             printf ("Don't know sector ofsets for flash type 0x%lx\n", info->flash_id);
 199             return;
 200         }
 201 }
 202
 203 /*-----------------------------------------------------------------------
 204  */
 205 void flash_print_info  (flash_info_t *info)
 206 {
 207         int i;
 208
 209         if (info->flash_id == FLASH_UNKNOWN) {
 210                 printf ("missing or unknown FLASH type\n");
 211                 return;
 212         }
 213
 214         switch (info->flash_id & FLASH_VENDMASK) {
 215         case FLASH_MAN_AMD:     printf ("AMD ");                break;
 216         case FLASH_MAN_FUJ:     printf ("Fujitsu ");            break;
 217         case FLASH_MAN_SST:     printf ("SST ");                break;
 218         case FLASH_MAN_STM:     printf ("STM ");                break;
 219         case FLASH_MAN_INTEL:   printf ("Intel ");              break;
 220         case FLASH_MAN_MT:      printf ("MT ");                 break;
 221         default:                printf ("Unknown Vendor ");     break;
 222         }
 223
 224         switch (info->flash_id & FLASH_TYPEMASK) {
 225         case FLASH_28F320J3A:   printf ("28F320J3A (32Mbit = 128K x 32)\n");
 226                                 break;
 227         case FLASH_28F640J3A:   printf ("28F640J3A (64Mbit = 128K x 64)\n");
 228                                 break;
 229         case FLASH_28F128J3A:   printf ("28F128J3A (128Mbit = 128K x 128)\n");
 230                                 break;
 231         default:                printf ("Unknown Chip Type\n");
 232                                 break;
 233         }
 234
 235         if (info->size >= (1 << 20)) {
 236                 i = 20;
 237         } else {
 238                 i = 10;
 239         }
 240         printf ("  Size: %ld %cB in %d Sectors\n",
 241                 info->size >> i,
 242                 (i == 20) ? 'M' : 'k',
 243                 info->sector_count);
 244
 245         printf ("  Sector Start Addresses:");
 246         for (i=0; i<info->sector_count; ++i) {
 247                 if ((i % 5) == 0)
 248                         printf ("\n   ");
 249                 printf (" %08lX%s",
 250                         info->start[i],
 251                         info->protect[i] ? " (RO)" : "     "
 252                 );
 253         }
 254         printf ("\n");
 255         return;
 256 }
 257
 258 /*-----------------------------------------------------------------------
 259  */
 260
 261
 262 /*-----------------------------------------------------------------------
 263  */
 264
 265 /*
 266  * The following code cannot be run from FLASH!
 267  */
 268 static ulong flash_get_size (vu_char *addr, flash_info_t *info)
 269 {
 270         vu_char manuf, device;
 271
 272         addr[0] = BS(0x90);
 273         manuf = BS(addr[0]);
 274         DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (vu_char *)addr, manuf);
 275
 276         switch (manuf) {
 277         case BYTEME(AMD_MANUFACT):
 278                 info->flash_id = FLASH_MAN_AMD;
 279                 break;
 280         case BYTEME(FUJ_MANUFACT):
 281                 info->flash_id = FLASH_MAN_FUJ;
 282                 break;
 283         case BYTEME(SST_MANUFACT):
 284                 info->flash_id = FLASH_MAN_SST;
 285                 break;
 286         case BYTEME(STM_MANUFACT):
 287                 info->flash_id = FLASH_MAN_STM;
 288                 break;
 289         case BYTEME(INTEL_MANUFACT):
 290                 info->flash_id = FLASH_MAN_INTEL;
 291                 break;
 292         default:
 293                 info->flash_id = FLASH_UNKNOWN;
 294                 info->sector_count = 0;
 295                 info->size = 0;
 296                 addr[0] = BS(0xFF);             /* restore read mode, (yes, BS is a NOP) */
 297                 return 0;                       /* no or unknown flash  */
 298         }
 299
 300         device = BS(addr[2]);                   /* device ID            */
 301
 302         DEBUGF("Device ID @ 0x%08x: 0x%08x\n", (&addr[1]), device);
 303
 304         switch (device) {
 305         case BYTEME(INTEL_ID_28F320J3A):
 306                 info->flash_id += FLASH_28F320J3A;
 307                 info->sector_count = 32;
 308                 info->size = 0x00400000;
 309                 break;                          /* =>  4 MB             */
 310
 311         case BYTEME(INTEL_ID_28F640J3A):
 312                 info->flash_id += FLASH_28F640J3A;
 313                 info->sector_count = 64;
 314                 info->size = 0x00800000;
 315                 break;                          /* => 8 MB              */
 316
 317         case BYTEME(INTEL_ID_28F128J3A):
 318                 info->flash_id += FLASH_28F128J3A;
 319                 info->sector_count = 128;
 320                 info->size = 0x01000000;
 321                 break;                          /* => 16 MB             */
 322
 323         default:
 324                 info->flash_id = FLASH_UNKNOWN;
 325                 addr[0] = BS(0xFF);             /* restore read mode (yes, a NOP) */
 326                 return 0;                       /* => no or unknown flash */
 327
 328         }
 329
 330         if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
 331                 printf ("** ERROR: sector count %d > max (%d) **\n",
 332                         info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
 333                 info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
 334         }
 335
 336         addr[0] = BS(0xFF);             /* restore read mode */
 337
 338         return (info->size);
 339 }
 340
 341
 342 /*-----------------------------------------------------------------------
 343  */
 344
 345 int     flash_erase (flash_info_t *info, int s_first, int s_last)
 346 {
 347         int flag, prot, sect;
 348         ulong start, now, last;
 349
 350         if ((s_first < 0) || (s_first > s_last)) {
 351                 if (info->flash_id == FLASH_UNKNOWN) {
 352                         printf ("- missing\n");
 353                 } else {
 354                         printf ("- no sectors to erase\n");
 355                 }
 356                 return 1;
 357         }
 358
 359         if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
 360                 printf ("Can erase only Intel flash types - aborted\n");
 361                 return 1;
 362         }
 363
 364         prot = 0;
 365         for (sect=s_first; sect<=s_last; ++sect) {
 366                 if (info->protect[sect]) {
 367                         prot++;
 368                 }
 369         }
 370
 371         if (prot) {
 372                 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
 373         } else {
 374                 printf ("\n");
 375         }
 376
 377         start = get_timer (0);
 378         last  = start;
 379         /* Start erase on unprotected sectors */
 380         for (sect = s_first; sect<=s_last; sect++) {
 381                 if (info->protect[sect] == 0) { /* not protected */
 382                         vu_char *addr = (vu_char *)(info->start[sect]);
 383                         unsigned long status;
 384
 385                         /* Disable interrupts which might cause a timeout here */
 386                         flag = disable_interrupts();
 387
 388                         *addr = BS(0x50);       /* clear status register */
 389                         *addr = BS(0x20);       /* erase setup */
 390                         *addr = BS(0xD0);       /* erase confirm */
 391
 392                         /* re-enable interrupts if necessary */
 393                         if (flag) {
 394                                 enable_interrupts();
 395                         }
 396
 397                         /* wait at least 80us - let's wait 1 ms */
 398                         udelay (1000);
 399
 400                         while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
 401                                 if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 402                                         printf ("Timeout\n");
 403                                         *addr = BS(0xB0); /* suspend erase        */
 404                                         *addr = BS(0xFF); /* reset to read mode */
 405                                         return 1;
 406                                 }
 407
 408                                 /* show that we're waiting */
 409                                 if ((now - last) > 1000) {      /* every second */
 410                                         putc ('.');
 411                                         last = now;
 412                                 }
 413                         }
 414
 415                         *addr = BS(0xFF);       /* reset to read mode */
 416                 }
 417         }
 418         printf (" done\n");
 419         return 0;
 420 }
 421
 422 /*-----------------------------------------------------------------------
 423  * Copy memory to flash, returns:
 424  * 0 - OK
 425  * 1 - write timeout
 426  * 2 - Flash not erased
 427  * 4 - Flash not identified
 428  */
 429
 430 #define FLASH_WIDTH     1       /* flash bus width in bytes */
 431
 432 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 433 {
 434         uchar *wp = (uchar *)addr;
 435         int rc;
 436
 437         if (info->flash_id == FLASH_UNKNOWN) {
 438                 return 4;
 439         }
 440
 441         while (cnt > 0) {
 442                 if ((rc = write_data(info, wp, *src)) != 0) {
 443                         return rc;
 444                 }
 445                 wp++;
 446                 src++;
 447                 cnt--;
 448         }
 449
 450         return cnt;
 451 }
 452
 453 /*-----------------------------------------------------------------------
 454  * Write a word to Flash, returns:
 455  * 0 - OK
 456  * 1 - write timeout
 457  * 2 - Flash not erased
 458  */
 459 static int write_data (flash_info_t *info, uchar *dest, uchar data)
 460 {
 461         vu_char *addr = (vu_char *)dest;
 462         ulong status;
 463         ulong start;
 464         int flag;
 465
 466         /* Check if Flash is (sufficiently) erased */
 467         if ((BS(*addr) & data) != data) {
 468                 return 2;
 469         }
 470         /* Disable interrupts which might cause a timeout here */
 471         flag = disable_interrupts();
 472
 473         *addr = BS(0x40);               /* write setup */
 474         *addr = data;
 475
 476         /* re-enable interrupts if necessary */
 477         if (flag) {
 478                 enable_interrupts();
 479         }
 480
 481         start = get_timer (0);
 482
 483         while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
 484                 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
 485                         *addr = BS(0xFF);       /* restore read mode */
 486                         return 1;
 487                 }
 488         }
 489
 490         *addr = BS(0xFF);       /* restore read mode */
 491
 492         return 0;
 493 }
 494
 495 /*-----------------------------------------------------------------------
 496  */