wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | /* #define DEBUG */ |
| 25 | |
| 26 | #include <common.h> |
| 27 | #include <environment.h> |
| 28 | |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 29 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 30 | |
| 31 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; |
| 32 | |
| 33 | |
| 34 | #define CMD_READ_ARRAY 0x00F000F0 |
| 35 | #define CMD_UNLOCK1 0x00AA00AA |
| 36 | #define CMD_UNLOCK2 0x00550055 |
| 37 | #define CMD_ERASE_SETUP 0x00800080 |
| 38 | #define CMD_ERASE_CONFIRM 0x00300030 |
| 39 | #define CMD_PROGRAM 0x00A000A0 |
| 40 | #define CMD_UNLOCK_BYPASS 0x00200020 |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 41 | #define CMD_READ_MANF_ID 0x00900090 |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 42 | |
| 43 | #define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2))) |
| 44 | #define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2))) |
| 45 | |
| 46 | #define BIT_ERASE_DONE 0x00800080 |
| 47 | #define BIT_RDY_MASK 0x00800080 |
| 48 | #define BIT_PROGRAM_ERROR 0x00200020 |
| 49 | #define BIT_TIMEOUT 0x80000000 /* our flag */ |
| 50 | |
| 51 | #define READY 1 |
| 52 | #define ERR 2 |
| 53 | #define TMO 4 |
| 54 | |
| 55 | /*----------------------------------------------------------------------- |
| 56 | */ |
| 57 | |
| 58 | ulong flash_init (void) |
| 59 | { |
| 60 | int i, j; |
| 61 | ulong size = 0; |
| 62 | |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 63 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 64 | ulong flashbase = 0; |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 65 | flash_info_t *info = &flash_info[i]; |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 66 | |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 67 | /* Init: no FLASHes known */ |
| 68 | info->flash_id = FLASH_UNKNOWN; |
| 69 | |
| 70 | size += flash_get_size (CFG_FLASH_BASE, info); |
| 71 | |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 72 | if (i == 0) |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 73 | flashbase = CFG_FLASH_BASE; |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 74 | else |
| 75 | panic ("configured too many flash banks!\n"); |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 76 | for (j = 0; j < info->sector_count; j++) { |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 77 | |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 78 | info->protect[j] = 0; |
| 79 | info->start[j] = flashbase; |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 80 | |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 81 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 82 | case (FLASH_AM320B & FLASH_TYPEMASK): |
| 83 | /* Boot sector type: 8 x 8 + N x 128 kB */ |
| 84 | flashbase += (j < 8) ? 0x4000 : 0x20000; |
| 85 | break; |
| 86 | case (FLASH_AM640U & FLASH_TYPEMASK): |
| 87 | /* Uniform sector type: 128 kB */ |
| 88 | flashbase += 0x20000; |
| 89 | break; |
| 90 | default: |
| 91 | printf ("## Bad flash chip type 0x%04lX\n", |
| 92 | info->flash_id & FLASH_TYPEMASK); |
| 93 | } |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 94 | } |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Protect monitor and environment sectors |
| 99 | */ |
| 100 | flash_protect ( FLAG_PROTECT_SET, |
| 101 | CFG_FLASH_BASE, |
wdenk | 3b57fe0 | 2003-05-30 12:48:29 +0000 | [diff] [blame^] | 102 | CFG_FLASH_BASE + monitor_flash_len - 1, |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 103 | &flash_info[0]); |
| 104 | |
| 105 | flash_protect ( FLAG_PROTECT_SET, |
| 106 | CFG_ENV_ADDR, |
| 107 | CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); |
| 108 | |
| 109 | #ifdef CFG_ENV_ADDR_REDUND |
| 110 | flash_protect ( FLAG_PROTECT_SET, |
| 111 | CFG_ENV_ADDR_REDUND, |
| 112 | CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1, |
| 113 | &flash_info[0]); |
| 114 | #endif |
| 115 | |
| 116 | return size; |
| 117 | } |
| 118 | |
| 119 | /*----------------------------------------------------------------------- |
| 120 | */ |
| 121 | void flash_print_info (flash_info_t * info) |
| 122 | { |
| 123 | int i; |
| 124 | |
| 125 | switch (info->flash_id & FLASH_VENDMASK) { |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 126 | case (FLASH_MAN_AMD & FLASH_VENDMASK): |
wdenk | 1cb8e98 | 2003-03-06 21:55:29 +0000 | [diff] [blame] | 127 | printf ("AMD "); break; |
| 128 | case (FLASH_MAN_FUJ & FLASH_VENDMASK): |
| 129 | printf ("FUJITSU "); break; |
| 130 | default: printf ("Unknown Vendor "); break; |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | switch (info->flash_id & FLASH_TYPEMASK) { |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 134 | case (FLASH_AM320B & FLASH_TYPEMASK): |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 135 | printf ("2x Am29LV320DB (32Mbit)\n"); |
| 136 | break; |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 137 | case (FLASH_AM640U & FLASH_TYPEMASK): |
| 138 | printf ("2x Am29LV640D (64Mbit)\n"); |
| 139 | break; |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 140 | default: |
| 141 | printf ("Unknown Chip Type\n"); |
| 142 | goto Done; |
| 143 | break; |
| 144 | } |
| 145 | |
| 146 | printf (" Size: %ld MB in %d Sectors\n", |
| 147 | info->size >> 20, info->sector_count); |
| 148 | |
| 149 | printf (" Sector Start Addresses:"); |
| 150 | for (i = 0; i < info->sector_count; i++) { |
| 151 | if ((i % 5) == 0) { |
| 152 | printf ("\n "); |
| 153 | } |
| 154 | printf (" %08lX%s", |
| 155 | info->start[i], |
| 156 | info->protect[i] ? " (RO)" : " "); |
| 157 | } |
| 158 | printf ("\n"); |
| 159 | |
| 160 | Done: |
| 161 | } |
| 162 | |
| 163 | /*----------------------------------------------------------------------- |
| 164 | */ |
| 165 | |
| 166 | int flash_erase (flash_info_t * info, int s_first, int s_last) |
| 167 | { |
| 168 | ulong result; |
| 169 | |
| 170 | #if 0 |
| 171 | int cflag; |
| 172 | #endif |
| 173 | int iflag, prot, sect; |
| 174 | int rc = ERR_OK; |
| 175 | int chip1, chip2; |
| 176 | |
| 177 | debug ("flash_erase: s_first %d s_last %d\n", s_first, s_last); |
| 178 | |
| 179 | /* first look for protection bits */ |
| 180 | |
| 181 | if (info->flash_id == FLASH_UNKNOWN) |
| 182 | return ERR_UNKNOWN_FLASH_TYPE; |
| 183 | |
| 184 | if ((s_first < 0) || (s_first > s_last)) { |
| 185 | return ERR_INVAL; |
| 186 | } |
| 187 | |
wdenk | 3bac351 | 2003-03-12 10:41:04 +0000 | [diff] [blame] | 188 | switch (info->flash_id & FLASH_VENDMASK) { |
| 189 | case (FLASH_MAN_AMD & FLASH_VENDMASK): break; /* OK */ |
| 190 | case (FLASH_MAN_FUJ & FLASH_VENDMASK): break; /* OK */ |
| 191 | default: |
| 192 | debug ("## flash_erase: unknown manufacturer\n"); |
| 193 | return (ERR_UNKNOWN_FLASH_VENDOR); |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | prot = 0; |
| 197 | for (sect = s_first; sect <= s_last; ++sect) { |
| 198 | if (info->protect[sect]) { |
| 199 | prot++; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | if (prot) { |
| 204 | printf ("- Warning: %d protected sectors will not be erased!\n", |
| 205 | prot); |
| 206 | } else { |
| 207 | printf ("\n"); |
| 208 | } |
| 209 | |
| 210 | /* |
| 211 | * Disable interrupts which might cause a timeout |
| 212 | * here. Remember that our exception vectors are |
| 213 | * at address 0 in the flash, and we don't want a |
| 214 | * (ticker) exception to happen while the flash |
| 215 | * chip is in programming mode. |
| 216 | */ |
| 217 | #if 0 |
| 218 | cflag = icache_status (); |
| 219 | icache_disable (); |
| 220 | #endif |
| 221 | iflag = disable_interrupts (); |
| 222 | |
| 223 | /* Start erase on unprotected sectors */ |
| 224 | for (sect = s_first; sect <= s_last && !ctrlc (); sect++) { |
| 225 | |
| 226 | debug ("Erasing sector %2d @ %08lX... ", |
| 227 | sect, info->start[sect]); |
| 228 | |
| 229 | /* arm simple, non interrupt dependent timer */ |
| 230 | reset_timer_masked (); |
| 231 | |
| 232 | if (info->protect[sect] == 0) { /* not protected */ |
| 233 | vu_long *addr = (vu_long *) (info->start[sect]); |
| 234 | |
| 235 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 236 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 237 | MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; |
| 238 | |
| 239 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 240 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 241 | *addr = CMD_ERASE_CONFIRM; |
| 242 | |
| 243 | /* wait until flash is ready */ |
| 244 | chip1 = chip2 = 0; |
| 245 | |
| 246 | do { |
| 247 | result = *addr; |
| 248 | |
| 249 | /* check timeout */ |
| 250 | if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { |
| 251 | MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| 252 | chip1 = TMO; |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE) |
| 257 | chip1 = READY; |
| 258 | |
| 259 | if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR) |
| 260 | chip1 = ERR; |
| 261 | |
| 262 | if (!chip2 && (result >> 16) & BIT_ERASE_DONE) |
| 263 | chip2 = READY; |
| 264 | |
| 265 | if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR) |
| 266 | chip2 = ERR; |
| 267 | |
| 268 | } while (!chip1 || !chip2); |
| 269 | |
| 270 | MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| 271 | |
| 272 | if (chip1 == ERR || chip2 == ERR) { |
| 273 | rc = ERR_PROG_ERROR; |
| 274 | goto outahere; |
| 275 | } |
| 276 | if (chip1 == TMO) { |
| 277 | rc = ERR_TIMOUT; |
| 278 | goto outahere; |
| 279 | } |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 280 | } |
| 281 | } |
| 282 | |
| 283 | outahere: |
| 284 | /* allow flash to settle - wait 10 ms */ |
| 285 | udelay_masked (10000); |
| 286 | |
| 287 | if (iflag) |
| 288 | enable_interrupts (); |
| 289 | |
| 290 | #if 0 |
| 291 | if (cflag) |
| 292 | icache_enable (); |
| 293 | #endif |
| 294 | return rc; |
| 295 | } |
| 296 | |
| 297 | /*----------------------------------------------------------------------- |
| 298 | * Copy memory to flash |
| 299 | */ |
| 300 | |
| 301 | volatile static int write_word (flash_info_t * info, ulong dest, |
| 302 | ulong data) |
| 303 | { |
| 304 | vu_long *addr = (vu_long *) dest; |
| 305 | ulong result; |
| 306 | int rc = ERR_OK; |
| 307 | |
| 308 | #if 0 |
| 309 | int cflag; |
| 310 | #endif |
| 311 | int iflag; |
| 312 | int chip1, chip2; |
| 313 | |
| 314 | /* |
| 315 | * Check if Flash is (sufficiently) erased |
| 316 | */ |
| 317 | result = *addr; |
| 318 | if ((result & data) != data) |
| 319 | return ERR_NOT_ERASED; |
| 320 | |
| 321 | /* |
| 322 | * Disable interrupts which might cause a timeout |
| 323 | * here. Remember that our exception vectors are |
| 324 | * at address 0 in the flash, and we don't want a |
| 325 | * (ticker) exception to happen while the flash |
| 326 | * chip is in programming mode. |
| 327 | */ |
| 328 | #if 0 |
| 329 | cflag = icache_status (); |
| 330 | icache_disable (); |
| 331 | #endif |
| 332 | iflag = disable_interrupts (); |
| 333 | |
| 334 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 335 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 336 | MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS; |
| 337 | *addr = CMD_PROGRAM; |
| 338 | *addr = data; |
| 339 | |
| 340 | /* arm simple, non interrupt dependent timer */ |
| 341 | reset_timer_masked (); |
| 342 | |
| 343 | /* wait until flash is ready */ |
| 344 | chip1 = chip2 = 0; |
| 345 | do { |
| 346 | result = *addr; |
| 347 | |
| 348 | /* check timeout */ |
| 349 | if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { |
| 350 | chip1 = ERR | TMO; |
| 351 | break; |
| 352 | } |
| 353 | if (!chip1 && ((result & 0x80) == (data & 0x80))) |
| 354 | chip1 = READY; |
| 355 | |
| 356 | if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) { |
| 357 | result = *addr; |
| 358 | |
| 359 | if ((result & 0x80) == (data & 0x80)) |
| 360 | chip1 = READY; |
| 361 | else |
| 362 | chip1 = ERR; |
| 363 | } |
| 364 | |
| 365 | if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16)))) |
| 366 | chip2 = READY; |
| 367 | |
| 368 | if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) { |
| 369 | result = *addr; |
| 370 | |
| 371 | if ((result & (0x80 << 16)) == (data & (0x80 << 16))) |
| 372 | chip2 = READY; |
| 373 | else |
| 374 | chip2 = ERR; |
| 375 | } |
| 376 | |
| 377 | } while (!chip1 || !chip2); |
| 378 | |
| 379 | *addr = CMD_READ_ARRAY; |
| 380 | |
| 381 | if (chip1 == ERR || chip2 == ERR || *addr != data) |
| 382 | rc = ERR_PROG_ERROR; |
| 383 | |
| 384 | if (iflag) |
| 385 | enable_interrupts (); |
| 386 | |
| 387 | #if 0 |
| 388 | if (cflag) |
| 389 | icache_enable (); |
| 390 | #endif |
| 391 | |
| 392 | return rc; |
| 393 | } |
| 394 | |
| 395 | /*----------------------------------------------------------------------- |
| 396 | * Copy memory to flash. |
| 397 | */ |
| 398 | |
| 399 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
| 400 | { |
| 401 | ulong cp, wp, data; |
| 402 | int l; |
| 403 | int i, rc; |
| 404 | |
| 405 | wp = (addr & ~3); /* get lower word aligned address */ |
| 406 | |
| 407 | /* |
| 408 | * handle unaligned start bytes |
| 409 | */ |
| 410 | if ((l = addr - wp) != 0) { |
| 411 | data = 0; |
| 412 | for (i = 0, cp = wp; i < l; ++i, ++cp) { |
| 413 | data = (data >> 8) | (*(uchar *) cp << 24); |
| 414 | } |
| 415 | for (; i < 4 && cnt > 0; ++i) { |
| 416 | data = (data >> 8) | (*src++ << 24); |
| 417 | --cnt; |
| 418 | ++cp; |
| 419 | } |
| 420 | for (; cnt == 0 && i < 4; ++i, ++cp) { |
| 421 | data = (data >> 8) | (*(uchar *) cp << 24); |
| 422 | } |
| 423 | |
| 424 | if ((rc = write_word (info, wp, data)) != 0) { |
| 425 | return (rc); |
| 426 | } |
| 427 | wp += 4; |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * handle word aligned part |
| 432 | */ |
| 433 | while (cnt >= 4) { |
wdenk | f07771c | 2003-05-28 08:06:31 +0000 | [diff] [blame] | 434 | if (((ulong)src) & 0x3) { |
| 435 | for (i = 0; i < 4; i++) { |
| 436 | ((char *)&data)[i] = ((vu_char *)src)[i]; |
| 437 | } |
| 438 | } |
| 439 | else { |
| 440 | data = *((vu_long *) src); |
| 441 | } |
| 442 | |
wdenk | f682e42 | 2002-10-26 16:57:25 +0000 | [diff] [blame] | 443 | if ((rc = write_word (info, wp, data)) != 0) { |
| 444 | return (rc); |
| 445 | } |
| 446 | src += 4; |
| 447 | wp += 4; |
| 448 | cnt -= 4; |
| 449 | } |
| 450 | |
| 451 | if (cnt == 0) { |
| 452 | return ERR_OK; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * handle unaligned tail bytes |
| 457 | */ |
| 458 | data = 0; |
| 459 | for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { |
| 460 | data = (data >> 8) | (*src++ << 24); |
| 461 | --cnt; |
| 462 | } |
| 463 | for (; i < 4; ++i, ++cp) { |
| 464 | data = (data >> 8) | (*(uchar *) cp << 24); |
| 465 | } |
| 466 | |
| 467 | return write_word (info, wp, data); |
| 468 | } |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 469 | |
| 470 | /*----------------------------------------------------------------------- |
| 471 | */ |
| 472 | |
| 473 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| 474 | { |
| 475 | ulong value; |
| 476 | |
| 477 | /* Write auto select command sequence and read Manufacturer ID */ |
| 478 | addr[0x0555] = CMD_UNLOCK1; |
| 479 | addr[0x02AA] = CMD_UNLOCK2; |
| 480 | addr[0x0555] = CMD_READ_MANF_ID; |
| 481 | |
| 482 | value = addr[0]; |
| 483 | |
| 484 | debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value); |
| 485 | |
| 486 | switch (value) { |
| 487 | case AMD_MANUFACT: |
| 488 | info->flash_id = FLASH_MAN_AMD; |
| 489 | break; |
wdenk | 1cb8e98 | 2003-03-06 21:55:29 +0000 | [diff] [blame] | 490 | case FUJ_MANUFACT: |
| 491 | info->flash_id = FLASH_MAN_FUJ; |
| 492 | break; |
wdenk | 6069ff2 | 2003-02-28 00:49:47 +0000 | [diff] [blame] | 493 | default: |
| 494 | info->flash_id = FLASH_UNKNOWN; |
| 495 | info->sector_count = 0; |
| 496 | info->size = 0; |
| 497 | addr[0] = 0x00FF00FF; /* restore read mode */ |
| 498 | debug ("## flash_init: unknown manufacturer\n"); |
| 499 | return (0); /* no or unknown flash */ |
| 500 | } |
| 501 | |
| 502 | value = addr[1]; /* device ID */ |
| 503 | |
| 504 | debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value); |
| 505 | |
| 506 | switch (value) { |
| 507 | case AMD_ID_LV320B: |
| 508 | info->flash_id += FLASH_AM320B; |
| 509 | info->sector_count = 71; |
| 510 | info->size = 0x00800000; |
| 511 | |
| 512 | addr[0] = 0x00FF00FF; /* restore read mode */ |
| 513 | break; /* => 8 MB */ |
| 514 | |
| 515 | case AMD_ID_LV640U: |
| 516 | info->flash_id += FLASH_AM640U; |
| 517 | info->sector_count = 128; |
| 518 | info->size = 0x01000000; |
| 519 | |
| 520 | addr[0] = 0x00F000F0; /* restore read mode */ |
| 521 | break; /* => 16 MB */ |
| 522 | |
| 523 | default: |
| 524 | debug ("## flash_init: unknown flash chip\n"); |
| 525 | info->flash_id = FLASH_UNKNOWN; |
| 526 | addr[0] = 0x00FF00FF; /* restore read mode */ |
| 527 | return (0); /* => no or unknown flash */ |
| 528 | |
| 529 | } |
| 530 | |
| 531 | if (info->sector_count > CFG_MAX_FLASH_SECT) { |
| 532 | printf ("** ERROR: sector count %d > max (%d) **\n", |
| 533 | info->sector_count, CFG_MAX_FLASH_SECT); |
| 534 | info->sector_count = CFG_MAX_FLASH_SECT; |
| 535 | } |
| 536 | |
| 537 | return (info->size); |
| 538 | } |