drivers/mtd/jedec_flash.c

   1 /*
   2  * (C) Copyright 2007
   3  * Michael Schwingen, <michael@schwingen.org>
   4  *
   5  * based in great part on jedec_probe.c from linux kernel:
   6  * (C) 2000 Red Hat. GPL'd.
   7  * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 /* The DEBUG define must be before common to enable debugging */
  13 /*#define DEBUG*/
  14
  15 #include <common.h>
  16 #include <asm/processor.h>
  17 #include <asm/io.h>
  18 #include <asm/byteorder.h>
  19 #include <environment.h>
  20
  21 #define P_ID_AMD_STD CFI_CMDSET_AMD_LEGACY
  22
  23 /* AMD */
  24 #define AM29DL800BB     0x22CB
  25 #define AM29DL800BT     0x224A
  26
  27 #define AM29F400BB      0x22AB
  28 #define AM29F800BB      0x2258
  29 #define AM29F800BT      0x22D6
  30 #define AM29LV400BB     0x22BA
  31 #define AM29LV400BT     0x22B9
  32 #define AM29LV800BB     0x225B
  33 #define AM29LV800BT     0x22DA
  34 #define AM29LV160DT     0x22C4
  35 #define AM29LV160DB     0x2249
  36 #define AM29F017D       0x003D
  37 #define AM29F016D       0x00AD
  38 #define AM29F080        0x00D5
  39 #define AM29F040        0x00A4
  40 #define AM29LV040B      0x004F
  41 #define AM29F032B       0x0041
  42 #define AM29F002T       0x00B0
  43
  44 /* SST */
  45 #define SST39LF800      0x2781
  46 #define SST39LF160      0x2782
  47 #define SST39VF1601     0x234b
  48 #define SST39LF512      0x00D4
  49 #define SST39LF010      0x00D5
  50 #define SST39LF020      0x00D6
  51 #define SST39LF040      0x00D7
  52 #define SST39SF010A     0x00B5
  53 #define SST39SF020A     0x00B6
  54
  55 /* STM */
  56 #define STM29F400BB     0x00D6
  57
  58 /* MXIC */
  59 #define MX29LV040       0x004F
  60
  61 /* WINBOND */
  62 #define W39L040A        0x00D6
  63
  64 /* AMIC */
  65 #define A29L040         0x0092
  66
  67 /* EON */
  68 #define EN29LV040A      0x004F
  69
  70 /*
  71  * Unlock address sets for AMD command sets.
  72  * Intel command sets use the MTD_UADDR_UNNECESSARY.
  73  * Each identifier, except MTD_UADDR_UNNECESSARY, and
  74  * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
  75  * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
  76  * initialization need not require initializing all of the
  77  * unlock addresses for all bit widths.
  78  */
  79 enum uaddr {
  80         MTD_UADDR_NOT_SUPPORTED = 0,    /* data width not supported */
  81         MTD_UADDR_0x0555_0x02AA,
  82         MTD_UADDR_0x0555_0x0AAA,
  83         MTD_UADDR_0x5555_0x2AAA,
  84         MTD_UADDR_0x0AAA_0x0555,
  85         MTD_UADDR_DONT_CARE,            /* Requires an arbitrary address */
  86         MTD_UADDR_UNNECESSARY,          /* Does not require any address */
  87 };
  88
  89
  90 struct unlock_addr {
  91         u32 addr1;
  92         u32 addr2;
  93 };
  94
  95
  96 /*
  97  * I don't like the fact that the first entry in unlock_addrs[]
  98  * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
  99  * should not be used.  The  problem is that structures with
 100  * initializers have extra fields initialized to 0.  It is _very_
 101  * desireable to have the unlock address entries for unsupported
 102  * data widths automatically initialized - that means that
 103  * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
 104  * must go unused.
 105  */
 106 static const struct unlock_addr  unlock_addrs[] = {
 107         [MTD_UADDR_NOT_SUPPORTED] = {
 108                 .addr1 = 0xffff,
 109                 .addr2 = 0xffff
 110         },
 111
 112         [MTD_UADDR_0x0555_0x02AA] = {
 113                 .addr1 = 0x0555,
 114                 .addr2 = 0x02aa
 115         },
 116
 117         [MTD_UADDR_0x0555_0x0AAA] = {
 118                 .addr1 = 0x0555,
 119                 .addr2 = 0x0aaa
 120         },
 121
 122         [MTD_UADDR_0x5555_0x2AAA] = {
 123                 .addr1 = 0x5555,
 124                 .addr2 = 0x2aaa
 125         },
 126
 127         [MTD_UADDR_0x0AAA_0x0555] = {
 128                 .addr1 = 0x0AAA,
 129                 .addr2 = 0x0555
 130         },
 131
 132         [MTD_UADDR_DONT_CARE] = {
 133                 .addr1 = 0x0000,      /* Doesn't matter which address */
 134                 .addr2 = 0x0000       /* is used - must be last entry */
 135         },
 136
 137         [MTD_UADDR_UNNECESSARY] = {
 138                 .addr1 = 0x0000,
 139                 .addr2 = 0x0000
 140         }
 141 };
 142
 143
 144 struct amd_flash_info {
 145         const __u16 mfr_id;
 146         const __u16 dev_id;
 147         const char *name;
 148         const int DevSize;
 149         const int NumEraseRegions;
 150         const int CmdSet;
 151         const __u8 uaddr[4];            /* unlock addrs for 8, 16, 32, 64 */
 152         const ulong regions[6];
 153 };
 154
 155 #define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
 156
 157 #define SIZE_64KiB  16
 158 #define SIZE_128KiB 17
 159 #define SIZE_256KiB 18
 160 #define SIZE_512KiB 19
 161 #define SIZE_1MiB   20
 162 #define SIZE_2MiB   21
 163 #define SIZE_4MiB   22
 164 #define SIZE_8MiB   23
 165
 166 static const struct amd_flash_info jedec_table[] = {
 167 #ifdef CONFIG_SYS_FLASH_LEGACY_256Kx8
 168         {
 169                 .mfr_id         = (u16)SST_MANUFACT,
 170                 .dev_id         = SST39LF020,
 171                 .name           = "SST 39LF020",
 172                 .uaddr          = {
 173                         [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
 174                 },
 175                 .DevSize        = SIZE_256KiB,
 176                 .CmdSet         = P_ID_AMD_STD,
 177                 .NumEraseRegions= 1,
 178                 .regions        = {
 179                         ERASEINFO(0x01000,64),
 180                 }
 181         },
 182 #endif
 183 #ifdef CONFIG_SYS_FLASH_LEGACY_512Kx8
 184         {
 185                 .mfr_id         = (u16)AMD_MANUFACT,
 186                 .dev_id         = AM29LV040B,
 187                 .name           = "AMD AM29LV040B",
 188                 .uaddr          = {
 189                         [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
 190                 },
 191                 .DevSize        = SIZE_512KiB,
 192                 .CmdSet         = P_ID_AMD_STD,
 193                 .NumEraseRegions= 1,
 194                 .regions        = {
 195                         ERASEINFO(0x10000,8),
 196                 }
 197         },
 198         {
 199                 .mfr_id         = (u16)SST_MANUFACT,
 200                 .dev_id         = SST39LF040,
 201                 .name           = "SST 39LF040",
 202                 .uaddr          = {
 203                         [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
 204                 },
 205                 .DevSize        = SIZE_512KiB,
 206                 .CmdSet         = P_ID_AMD_STD,
 207                 .NumEraseRegions= 1,
 208                 .regions        = {
 209                         ERASEINFO(0x01000,128),
 210                 }
 211         },
 212         {
 213                 .mfr_id         = (u16)STM_MANUFACT,
 214                 .dev_id         = STM_ID_M29W040B,
 215                 .name           = "ST Micro M29W040B",
 216                 .uaddr          = {
 217                         [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
 218                 },
 219                 .DevSize        = SIZE_512KiB,
 220                 .CmdSet         = P_ID_AMD_STD,
 221                 .NumEraseRegions= 1,
 222                 .regions        = {
 223                         ERASEINFO(0x10000,8),
 224                 }
 225         },
 226         {
 227                 .mfr_id         = (u16)MX_MANUFACT,
 228                 .dev_id         = MX29LV040,
 229                 .name           = "MXIC MX29LV040",
 230                 .uaddr          = {
 231                         [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
 232                 },
 233                 .DevSize        = SIZE_512KiB,
 234                 .CmdSet         = P_ID_AMD_STD,
 235                 .NumEraseRegions= 1,
 236                 .regions        = {
 237                         ERASEINFO(0x10000, 8),
 238                 }
 239         },
 240         {
 241                 .mfr_id         = (u16)WINB_MANUFACT,
 242                 .dev_id         = W39L040A,
 243                 .name           = "WINBOND W39L040A",
 244                 .uaddr          = {
 245                         [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
 246                 },
 247                 .DevSize        = SIZE_512KiB,
 248                 .CmdSet         = P_ID_AMD_STD,
 249                 .NumEraseRegions= 1,
 250                 .regions        = {
 251                         ERASEINFO(0x10000, 8),
 252                 }
 253         },
 254         {
 255                 .mfr_id         = (u16)AMIC_MANUFACT,
 256                 .dev_id         = A29L040,
 257                 .name           = "AMIC A29L040",
 258                 .uaddr          = {
 259                         [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
 260                 },
 261                 .DevSize        = SIZE_512KiB,
 262                 .CmdSet         = P_ID_AMD_STD,
 263                 .NumEraseRegions= 1,
 264                 .regions        = {
 265                         ERASEINFO(0x10000, 8),
 266                 }
 267         },
 268         {
 269                 .mfr_id         = (u16)EON_MANUFACT,
 270                 .dev_id         = EN29LV040A,
 271                 .name           = "EON EN29LV040A",
 272                 .uaddr          = {
 273                         [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
 274                 },
 275                 .DevSize        = SIZE_512KiB,
 276                 .CmdSet         = P_ID_AMD_STD,
 277                 .NumEraseRegions= 1,
 278                 .regions        = {
 279                         ERASEINFO(0x10000, 8),
 280                 }
 281         },
 282 #endif
 283 #ifdef CONFIG_SYS_FLASH_LEGACY_512Kx16
 284         {
 285                 .mfr_id         = (u16)AMD_MANUFACT,
 286                 .dev_id         = AM29F400BB,
 287                 .name           = "AMD AM29F400BB",
 288                 .uaddr          = {
 289                         [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
 290                 },
 291                 .DevSize        = SIZE_512KiB,
 292                 .CmdSet         = CFI_CMDSET_AMD_LEGACY,
 293                 .NumEraseRegions= 4,
 294                 .regions        = {
 295                         ERASEINFO(0x04000, 1),
 296                         ERASEINFO(0x02000, 2),
 297                         ERASEINFO(0x08000, 1),
 298                         ERASEINFO(0x10000, 7),
 299                 }
 300         },
 301         {
 302                 .mfr_id         = (u16)AMD_MANUFACT,
 303                 .dev_id         = AM29LV400BB,
 304                 .name           = "AMD AM29LV400BB",
 305                 .uaddr          = {
 306                         [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
 307                 },
 308                 .DevSize        = SIZE_512KiB,
 309                 .CmdSet         = CFI_CMDSET_AMD_LEGACY,
 310                 .NumEraseRegions= 4,
 311                 .regions        = {
 312                         ERASEINFO(0x04000,1),
 313                         ERASEINFO(0x02000,2),
 314                         ERASEINFO(0x08000,1),
 315                         ERASEINFO(0x10000,7),
 316                 }
 317         },
 318         {
 319                 .mfr_id         = (u16)AMD_MANUFACT,
 320                 .dev_id         = AM29LV800BB,
 321                 .name           = "AMD AM29LV800BB",
 322                 .uaddr          = {
 323                         [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
 324                 },
 325                 .DevSize        = SIZE_1MiB,
 326                 .CmdSet         = CFI_CMDSET_AMD_LEGACY,
 327                 .NumEraseRegions= 4,
 328                 .regions        = {
 329                         ERASEINFO(0x04000, 1),
 330                         ERASEINFO(0x02000, 2),
 331                         ERASEINFO(0x08000, 1),
 332                         ERASEINFO(0x10000, 15),
 333                 }
 334         },
 335         {
 336                 .mfr_id         = (u16)STM_MANUFACT,
 337                 .dev_id         = STM29F400BB,
 338                 .name           = "ST Micro M29F400BB",
 339                 .uaddr          = {
 340                         [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
 341                 },
 342                 .DevSize                = SIZE_512KiB,
 343                 .CmdSet                 = CFI_CMDSET_AMD_LEGACY,
 344                 .NumEraseRegions        = 4,
 345                 .regions                = {
 346                         ERASEINFO(0x04000, 1),
 347                         ERASEINFO(0x02000, 2),
 348                         ERASEINFO(0x08000, 1),
 349                         ERASEINFO(0x10000, 7),
 350                 }
 351         },
 352 #endif
 353 };
 354
 355 static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base)
 356 {
 357         int i,j;
 358         int sect_cnt;
 359         int size_ratio;
 360         int total_size;
 361         enum uaddr uaddr_idx;
 362
 363         size_ratio = info->portwidth / info->chipwidth;
 364
 365         debug("Found JEDEC Flash: %s\n", jedec_entry->name);
 366         info->vendor = jedec_entry->CmdSet;
 367         /* Todo: do we need device-specific timeouts? */
 368         info->erase_blk_tout = 30000;
 369         info->buffer_write_tout = 1000;
 370         info->write_tout = 100;
 371         info->name = jedec_entry->name;
 372
 373         /* copy unlock addresses from device table to CFI info struct. This
 374            is just here because the addresses are in the table anyway - if
 375            the flash is not detected due to wrong unlock addresses,
 376            flash_detect_legacy would have to try all of them before we even
 377            get here. */
 378         switch(info->chipwidth) {
 379         case FLASH_CFI_8BIT:
 380                 uaddr_idx = jedec_entry->uaddr[0];
 381                 break;
 382         case FLASH_CFI_16BIT:
 383                 uaddr_idx = jedec_entry->uaddr[1];
 384                 break;
 385         case FLASH_CFI_32BIT:
 386                 uaddr_idx = jedec_entry->uaddr[2];
 387                 break;
 388         default:
 389                 uaddr_idx = MTD_UADDR_NOT_SUPPORTED;
 390                 break;
 391         }
 392
 393         debug("unlock address index %d\n", uaddr_idx);
 394         info->addr_unlock1 = unlock_addrs[uaddr_idx].addr1;
 395         info->addr_unlock2 = unlock_addrs[uaddr_idx].addr2;
 396         debug("unlock addresses are 0x%lx/0x%lx\n",
 397                 info->addr_unlock1, info->addr_unlock2);
 398
 399         sect_cnt = 0;
 400         total_size = 0;
 401         for (i = 0; i < jedec_entry->NumEraseRegions; i++) {
 402                 ulong erase_region_size = jedec_entry->regions[i] >> 8;
 403                 ulong erase_region_count = (jedec_entry->regions[i] & 0xff) + 1;
 404
 405                 total_size += erase_region_size * erase_region_count;
 406                 debug("erase_region_count = %ld erase_region_size = %ld\n",
 407                        erase_region_count, erase_region_size);
 408                 for (j = 0; j < erase_region_count; j++) {
 409                         if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
 410                                 printf("ERROR: too many flash sectors\n");
 411                                 break;
 412                         }
 413                         info->start[sect_cnt] = base;
 414                         base += (erase_region_size * size_ratio);
 415                         sect_cnt++;
 416                 }
 417         }
 418         info->sector_count = sect_cnt;
 419         info->size = total_size * size_ratio;
 420 }
 421
 422 /*-----------------------------------------------------------------------
 423  * match jedec ids against table. If a match is found, fill flash_info entry
 424  */
 425 int jedec_flash_match(flash_info_t *info, ulong base)
 426 {
 427         int ret = 0;
 428         int i;
 429         ulong mask = 0xFFFF;
 430         if (info->chipwidth == 1)
 431                 mask = 0xFF;
 432
 433         for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
 434                 if ((jedec_table[i].mfr_id & mask) == (info->manufacturer_id & mask) &&
 435                     (jedec_table[i].dev_id & mask) == (info->device_id & mask)) {
 436                         fill_info(info, &jedec_table[i], base);
 437                         ret = 1;
 438                         break;
 439                 }
 440         }
 441         return ret;
 442 }