wdenk | affae2b | 2002-08-17 09:36:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@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 | * Hacked for the Hymod board by Murray.Jensen@cmst.csiro.au, 20-Oct-00 |
| 24 | */ |
| 25 | |
| 26 | #include <common.h> |
| 27 | #include <mpc8260.h> |
| 28 | #include <board/hymod/flash.h> |
| 29 | |
| 30 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
| 31 | |
| 32 | /*----------------------------------------------------------------------- |
| 33 | * Protection Flags: |
| 34 | */ |
| 35 | #define FLAG_PROTECT_SET 0x01 |
| 36 | #define FLAG_PROTECT_CLEAR 0x02 |
| 37 | |
| 38 | /*----------------------------------------------------------------------- |
| 39 | * Functions |
| 40 | */ |
| 41 | #if 0 |
| 42 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| 43 | static void flash_get_offsets (ulong base, flash_info_t *info); |
| 44 | #endif |
| 45 | static int write_word (flash_info_t *info, ulong dest, ulong data); |
| 46 | |
| 47 | /*----------------------------------------------------------------------- |
| 48 | */ |
| 49 | |
| 50 | /* |
| 51 | * probe for the existence of flash at bank word address "addr" |
| 52 | * 0 = yes, 1 = bad Manufacturer's Id, 2 = bad Device Id |
| 53 | */ |
| 54 | static int |
| 55 | bank_probe_word(bank_addr_t addr) |
| 56 | { |
| 57 | int retval; |
| 58 | |
| 59 | /* reset the flash */ |
| 60 | *addr = BANK_CMD_RST; |
| 61 | |
| 62 | /* check the manufacturer id */ |
| 63 | *addr = BANK_CMD_RD_ID; |
| 64 | if (*BANK_ADDR_REG_MAN(addr) != BANK_RD_ID_MAN) { |
| 65 | retval = -1; |
| 66 | goto out; |
| 67 | } |
| 68 | |
| 69 | /* check the device id */ |
| 70 | *addr = BANK_CMD_RD_ID; |
| 71 | if (*BANK_ADDR_REG_DEV(addr) != BANK_RD_ID_DEV) { |
| 72 | retval = -2; |
| 73 | goto out; |
| 74 | } |
| 75 | |
| 76 | retval = CFG_FLASH_TYPE; |
| 77 | |
| 78 | out: |
| 79 | /* reset the flash again */ |
| 80 | *addr = BANK_CMD_RST; |
| 81 | |
| 82 | return retval; |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * probe for flash banks at address "base" and store info for any found |
| 87 | * into flash_info entry "fip". Must find at least one bank. |
| 88 | */ |
| 89 | static void |
| 90 | bank_probe(flash_info_t *fip, bank_addr_t base) |
| 91 | { |
| 92 | bank_addr_t addr, eaddr; |
| 93 | int nbanks; |
| 94 | |
| 95 | fip->flash_id = FLASH_UNKNOWN; |
| 96 | fip->size = 0L; |
| 97 | fip->sector_count = 0; |
| 98 | |
| 99 | addr = base; |
| 100 | eaddr = BANK_ADDR_BASE(addr, MAX_BANKS); |
| 101 | nbanks = 0; |
| 102 | |
| 103 | while (addr < eaddr) { |
| 104 | bank_addr_t addrw, eaddrw, addrb; |
| 105 | int i, osc, nsc, curtype = -1; |
| 106 | |
| 107 | addrw = addr; |
| 108 | eaddrw = BANK_ADDR_NEXT_WORD(addrw); |
| 109 | |
| 110 | while (addrw < eaddrw) { |
| 111 | int thistype; |
| 112 | |
| 113 | #ifdef FLASH_DEBUG |
| 114 | printf(" probing for flash at addr 0x%08lx\n", |
| 115 | (unsigned long)addrw); |
| 116 | #endif |
| 117 | if ((thistype = bank_probe_word(addrw++)) < 0) |
| 118 | goto out; |
| 119 | |
| 120 | if (curtype < 0) |
| 121 | curtype = thistype; |
| 122 | else { |
| 123 | if (thistype != curtype) { |
| 124 | printf("Differing flash type found!\n"); |
| 125 | goto out; |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | if (curtype < 0) |
| 131 | goto out; |
| 132 | |
| 133 | /* bank exists - append info for this bank to *fip */ |
| 134 | fip->flash_id = FLASH_MAN_INTEL|curtype; |
| 135 | fip->size += BANK_SIZE; |
| 136 | osc = fip->sector_count; |
| 137 | fip->sector_count += BANK_NBLOCKS; |
| 138 | if ((nsc = fip->sector_count) >= CFG_MAX_FLASH_SECT) |
| 139 | panic("Too many sectors in flash at address 0x%08lx\n", |
| 140 | (unsigned long)base); |
| 141 | |
| 142 | addrb = addr; |
| 143 | for (i = osc; i < nsc; i++) { |
| 144 | fip->start[i] = (ulong)addrb; |
| 145 | fip->protect[i] = 0; |
| 146 | addrb = BANK_ADDR_NEXT_BLK(addrb); |
| 147 | } |
| 148 | |
| 149 | addr = BANK_ADDR_NEXT_BANK(addr); |
| 150 | nbanks++; |
| 151 | } |
| 152 | |
| 153 | out: |
| 154 | if (nbanks == 0) |
| 155 | panic("ERROR: no flash found at address 0x%08lx\n", |
| 156 | (unsigned long)base); |
| 157 | } |
| 158 | |
| 159 | static void |
| 160 | bank_reset(flash_info_t *info, int sect) |
| 161 | { |
| 162 | bank_addr_t addrw, eaddrw; |
| 163 | |
| 164 | addrw = (bank_addr_t)info->start[sect]; |
| 165 | eaddrw = BANK_ADDR_NEXT_WORD(addrw); |
| 166 | |
| 167 | while (addrw < eaddrw) { |
| 168 | #ifdef FLASH_DEBUG |
| 169 | printf(" writing reset cmd to addr 0x%08lx\n", |
| 170 | (unsigned long)addrw); |
| 171 | #endif |
| 172 | *addrw = BANK_CMD_RST; |
| 173 | addrw++; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | static void |
| 178 | bank_erase_init(flash_info_t *info, int sect) |
| 179 | { |
| 180 | bank_addr_t addrw, saddrw, eaddrw; |
| 181 | int flag; |
| 182 | |
| 183 | #ifdef FLASH_DEBUG |
| 184 | printf("0x%08lx BANK_CMD_PROG\n", BANK_CMD_PROG); |
| 185 | printf("0x%08lx BANK_CMD_ERASE1\n", BANK_CMD_ERASE1); |
| 186 | printf("0x%08lx BANK_CMD_ERASE2\n", BANK_CMD_ERASE2); |
| 187 | printf("0x%08lx BANK_CMD_CLR_STAT\n", BANK_CMD_CLR_STAT); |
| 188 | printf("0x%08lx BANK_CMD_RST\n", BANK_CMD_RST); |
| 189 | printf("0x%08lx BANK_STAT_RDY\n", BANK_STAT_RDY); |
| 190 | printf("0x%08lx BANK_STAT_ERR\n", BANK_STAT_ERR); |
| 191 | #endif |
| 192 | |
| 193 | saddrw = (bank_addr_t)info->start[sect]; |
| 194 | eaddrw = BANK_ADDR_NEXT_WORD(saddrw); |
| 195 | |
| 196 | #ifdef FLASH_DEBUG |
| 197 | printf("erasing sector %d, start addr = 0x%08lx " |
| 198 | "(bank next word addr = 0x%08lx)\n", sect, |
| 199 | (unsigned long)saddrw, (unsigned long)eaddrw); |
| 200 | #endif |
| 201 | |
| 202 | /* Disable intrs which might cause a timeout here */ |
| 203 | flag = disable_interrupts(); |
| 204 | |
| 205 | for (addrw = saddrw; addrw < eaddrw; addrw++) { |
| 206 | #ifdef FLASH_DEBUG |
| 207 | printf(" writing erase cmd to addr 0x%08lx\n", |
| 208 | (unsigned long)addrw); |
| 209 | #endif |
| 210 | *addrw = BANK_CMD_ERASE1; |
| 211 | *addrw = BANK_CMD_ERASE2; |
| 212 | } |
| 213 | |
| 214 | /* re-enable interrupts if necessary */ |
| 215 | if (flag) |
| 216 | enable_interrupts(); |
| 217 | } |
| 218 | |
| 219 | static int |
| 220 | bank_erase_poll(flash_info_t *info, int sect) |
| 221 | { |
| 222 | bank_addr_t addrw, saddrw, eaddrw; |
| 223 | int sectdone, haderr; |
| 224 | |
| 225 | saddrw = (bank_addr_t)info->start[sect]; |
| 226 | eaddrw = BANK_ADDR_NEXT_WORD(saddrw); |
| 227 | |
| 228 | sectdone = 1; |
| 229 | haderr = 0; |
| 230 | |
| 231 | for (addrw = saddrw; addrw < eaddrw; addrw++) { |
| 232 | bank_word_t stat = *addrw; |
| 233 | |
| 234 | #ifdef FLASH_DEBUG |
| 235 | printf(" checking status at addr " |
| 236 | "0x%08lx [0x%08lx]\n", |
| 237 | (unsigned long)addrw, stat); |
| 238 | #endif |
| 239 | if ((stat & BANK_STAT_RDY) != BANK_STAT_RDY) |
| 240 | sectdone = 0; |
| 241 | else if ((stat & BANK_STAT_ERR) != 0) { |
| 242 | printf(" failed on sector %d " |
| 243 | "(stat = 0x%08lx) at " |
| 244 | "address 0x%08lx\n", |
| 245 | sect, stat, |
| 246 | (unsigned long)addrw); |
| 247 | *addrw = BANK_CMD_CLR_STAT; |
| 248 | haderr = 1; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | if (haderr) |
| 253 | return (-1); |
| 254 | else |
| 255 | return (sectdone); |
| 256 | } |
| 257 | |
| 258 | static int |
| 259 | bank_write_word(bank_addr_t addr, bank_word_t value) |
| 260 | { |
| 261 | bank_word_t stat; |
| 262 | ulong start; |
| 263 | int flag, retval; |
| 264 | |
| 265 | /* Disable interrupts which might cause a timeout here */ |
| 266 | flag = disable_interrupts(); |
| 267 | |
| 268 | *addr = BANK_CMD_PROG; |
| 269 | |
| 270 | *addr = value; |
| 271 | |
| 272 | /* re-enable interrupts if necessary */ |
| 273 | if (flag) |
| 274 | enable_interrupts(); |
| 275 | |
| 276 | retval = 0; |
| 277 | |
| 278 | /* data polling for D7 */ |
| 279 | start = get_timer (0); |
| 280 | do { |
| 281 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { |
| 282 | retval = 1; |
| 283 | goto done; |
| 284 | } |
| 285 | stat = *addr; |
| 286 | } while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY); |
| 287 | |
| 288 | if ((stat & BANK_STAT_ERR) != 0) { |
| 289 | printf("flash program failed (stat = 0x%08lx) " |
| 290 | "at address 0x%08lx\n", (ulong)stat, (ulong)addr); |
| 291 | *addr = BANK_CMD_CLR_STAT; |
| 292 | retval = 3; |
| 293 | } |
| 294 | |
| 295 | done: |
| 296 | /* reset to read mode */ |
| 297 | *addr = BANK_CMD_RST; |
| 298 | |
| 299 | return (retval); |
| 300 | } |
| 301 | |
| 302 | /*----------------------------------------------------------------------- |
| 303 | */ |
| 304 | |
| 305 | unsigned long |
| 306 | flash_init(void) |
| 307 | { |
| 308 | int i; |
| 309 | |
| 310 | /* Init: no FLASHes known */ |
| 311 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { |
| 312 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 313 | } |
| 314 | |
| 315 | bank_probe(&flash_info[0], (bank_addr_t)CFG_FLASH_BASE); |
| 316 | |
| 317 | /* |
| 318 | * protect monitor and environment sectors |
| 319 | */ |
| 320 | |
| 321 | #if CFG_MONITOR_BASE == CFG_FLASH_BASE |
| 322 | (void)flash_protect(FLAG_PROTECT_SET, |
| 323 | CFG_MONITOR_BASE, |
| 324 | CFG_MONITOR_BASE+CFG_MONITOR_LEN-1, |
| 325 | &flash_info[0]); |
| 326 | #endif |
| 327 | |
| 328 | #if defined(CFG_FLASH_ENV_ADDR) |
| 329 | (void)flash_protect(FLAG_PROTECT_SET, |
| 330 | CFG_FLASH_ENV_ADDR, |
| 331 | #if defined(CFG_FLASH_ENV_BUF) |
| 332 | CFG_FLASH_ENV_ADDR + CFG_FLASH_ENV_BUF - 1, |
| 333 | #else |
| 334 | CFG_FLASH_ENV_ADDR + CFG_FLASH_ENV_SIZE - 1, |
| 335 | #endif |
| 336 | &flash_info[0]); |
| 337 | #endif |
| 338 | |
| 339 | return flash_info[0].size; |
| 340 | } |
| 341 | |
| 342 | /*----------------------------------------------------------------------- |
| 343 | */ |
| 344 | #if 0 |
| 345 | static void |
| 346 | flash_get_offsets(ulong base, flash_info_t *info) |
| 347 | { |
| 348 | int i; |
| 349 | |
| 350 | /* set up sector start adress table */ |
| 351 | if (info->flash_id & FLASH_BTYPE) { |
| 352 | /* set sector offsets for bottom boot block type */ |
| 353 | info->start[0] = base + 0x00000000; |
| 354 | info->start[1] = base + 0x00008000; |
| 355 | info->start[2] = base + 0x0000C000; |
| 356 | info->start[3] = base + 0x00010000; |
| 357 | for (i = 4; i < info->sector_count; i++) { |
| 358 | info->start[i] = base + (i * 0x00020000) - 0x00060000; |
| 359 | } |
| 360 | } else { |
| 361 | /* set sector offsets for top boot block type */ |
| 362 | i = info->sector_count - 1; |
| 363 | info->start[i--] = base + info->size - 0x00008000; |
| 364 | info->start[i--] = base + info->size - 0x0000C000; |
| 365 | info->start[i--] = base + info->size - 0x00010000; |
| 366 | for (; i >= 0; i--) { |
| 367 | info->start[i] = base + i * 0x00020000; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | } |
| 372 | #endif /* 0 */ |
| 373 | |
| 374 | /*----------------------------------------------------------------------- |
| 375 | */ |
| 376 | void |
| 377 | flash_print_info(flash_info_t *info) |
| 378 | { |
| 379 | int i; |
| 380 | |
| 381 | if (info->flash_id == FLASH_UNKNOWN) { |
| 382 | printf ("missing or unknown FLASH type\n"); |
| 383 | return; |
| 384 | } |
| 385 | |
| 386 | switch (info->flash_id & FLASH_VENDMASK) { |
| 387 | case FLASH_MAN_INTEL: printf ("INTEL "); break; |
| 388 | default: printf ("Unknown Vendor "); break; |
| 389 | } |
| 390 | |
| 391 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 392 | case FLASH_28F320J5: printf ("28F320J5 (32 Mbit, 2 x 16bit)\n"); |
| 393 | break; |
| 394 | default: printf ("Unknown Chip Type\n"); |
| 395 | break; |
| 396 | } |
| 397 | |
| 398 | printf (" Size: %ld MB in %d Sectors\n", |
| 399 | info->size >> 20, info->sector_count); |
| 400 | |
| 401 | printf (" Sector Start Addresses:"); |
| 402 | for (i=0; i<info->sector_count; ++i) { |
| 403 | if ((i % 5) == 0) |
| 404 | printf ("\n "); |
| 405 | printf (" %08lX%s", |
| 406 | info->start[i], |
| 407 | info->protect[i] ? " (RO)" : " " |
| 408 | ); |
| 409 | } |
| 410 | printf ("\n"); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | /*----------------------------------------------------------------------- |
| 415 | */ |
| 416 | |
| 417 | /* |
| 418 | * The following code cannot be run from FLASH! |
| 419 | */ |
| 420 | #if 0 |
| 421 | static ulong |
| 422 | flash_get_size(vu_long *addr, flash_info_t *info) |
| 423 | { |
| 424 | short i; |
| 425 | ulong value; |
| 426 | ulong base = (ulong)addr; |
| 427 | |
| 428 | |
| 429 | /* Write auto select command: read Manufacturer ID */ |
| 430 | addr[0x0555] = 0x00AA00AA; |
| 431 | addr[0x02AA] = 0x00550055; |
| 432 | addr[0x0555] = 0x00900090; |
| 433 | |
| 434 | value = addr[0]; |
| 435 | |
| 436 | switch (value) { |
| 437 | case AMD_MANUFACT: |
| 438 | info->flash_id = FLASH_MAN_AMD; |
| 439 | break; |
| 440 | case FUJ_MANUFACT: |
| 441 | info->flash_id = FLASH_MAN_FUJ; |
| 442 | break; |
| 443 | default: |
| 444 | info->flash_id = FLASH_UNKNOWN; |
| 445 | info->sector_count = 0; |
| 446 | info->size = 0; |
| 447 | return (0); /* no or unknown flash */ |
| 448 | } |
| 449 | |
| 450 | value = addr[1]; /* device ID */ |
| 451 | |
| 452 | switch (value) { |
| 453 | case AMD_ID_LV400T: |
| 454 | info->flash_id += FLASH_AM400T; |
| 455 | info->sector_count = 11; |
| 456 | info->size = 0x00100000; |
| 457 | break; /* => 1 MB */ |
| 458 | |
| 459 | case AMD_ID_LV400B: |
| 460 | info->flash_id += FLASH_AM400B; |
| 461 | info->sector_count = 11; |
| 462 | info->size = 0x00100000; |
| 463 | break; /* => 1 MB */ |
| 464 | |
| 465 | case AMD_ID_LV800T: |
| 466 | info->flash_id += FLASH_AM800T; |
| 467 | info->sector_count = 19; |
| 468 | info->size = 0x00200000; |
| 469 | break; /* => 2 MB */ |
| 470 | |
| 471 | case AMD_ID_LV800B: |
| 472 | info->flash_id += FLASH_AM800B; |
| 473 | info->sector_count = 19; |
| 474 | info->size = 0x00200000; |
| 475 | break; /* => 2 MB */ |
| 476 | |
| 477 | case AMD_ID_LV160T: |
| 478 | info->flash_id += FLASH_AM160T; |
| 479 | info->sector_count = 35; |
| 480 | info->size = 0x00400000; |
| 481 | break; /* => 4 MB */ |
| 482 | |
| 483 | case AMD_ID_LV160B: |
| 484 | info->flash_id += FLASH_AM160B; |
| 485 | info->sector_count = 35; |
| 486 | info->size = 0x00400000; |
| 487 | break; /* => 4 MB */ |
| 488 | #if 0 /* enable when device IDs are available */ |
| 489 | case AMD_ID_LV320T: |
| 490 | info->flash_id += FLASH_AM320T; |
| 491 | info->sector_count = 67; |
| 492 | info->size = 0x00800000; |
| 493 | break; /* => 8 MB */ |
| 494 | |
| 495 | case AMD_ID_LV320B: |
| 496 | info->flash_id += FLASH_AM320B; |
| 497 | info->sector_count = 67; |
| 498 | info->size = 0x00800000; |
| 499 | break; /* => 8 MB */ |
| 500 | #endif |
| 501 | default: |
| 502 | info->flash_id = FLASH_UNKNOWN; |
| 503 | return (0); /* => no or unknown flash */ |
| 504 | |
| 505 | } |
| 506 | |
| 507 | /* set up sector start adress table */ |
| 508 | if (info->flash_id & FLASH_BTYPE) { |
| 509 | /* set sector offsets for bottom boot block type */ |
| 510 | info->start[0] = base + 0x00000000; |
| 511 | info->start[1] = base + 0x00008000; |
| 512 | info->start[2] = base + 0x0000C000; |
| 513 | info->start[3] = base + 0x00010000; |
| 514 | for (i = 4; i < info->sector_count; i++) { |
| 515 | info->start[i] = base + (i * 0x00020000) - 0x00060000; |
| 516 | } |
| 517 | } else { |
| 518 | /* set sector offsets for top boot block type */ |
| 519 | i = info->sector_count - 1; |
| 520 | info->start[i--] = base + info->size - 0x00008000; |
| 521 | info->start[i--] = base + info->size - 0x0000C000; |
| 522 | info->start[i--] = base + info->size - 0x00010000; |
| 523 | for (; i >= 0; i--) { |
| 524 | info->start[i] = base + i * 0x00020000; |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | /* check for protected sectors */ |
| 529 | for (i = 0; i < info->sector_count; i++) { |
| 530 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
| 531 | /* D0 = 1 if protected */ |
| 532 | addr = (volatile unsigned long *)(info->start[i]); |
| 533 | info->protect[i] = addr[2] & 1; |
| 534 | } |
| 535 | |
| 536 | /* |
| 537 | * Prevent writes to uninitialized FLASH. |
| 538 | */ |
| 539 | if (info->flash_id != FLASH_UNKNOWN) { |
| 540 | addr = (volatile unsigned long *)info->start[0]; |
| 541 | |
| 542 | *addr = 0x00F000F0; /* reset bank */ |
| 543 | } |
| 544 | |
| 545 | return (info->size); |
| 546 | } |
| 547 | #endif /* 0 */ |
| 548 | |
| 549 | |
| 550 | /*----------------------------------------------------------------------- |
| 551 | */ |
| 552 | |
| 553 | int |
| 554 | flash_erase(flash_info_t *info, int s_first, int s_last) |
| 555 | { |
| 556 | int prot, sect, haderr; |
| 557 | ulong start, now, last; |
| 558 | int rcode = 0; |
| 559 | |
| 560 | #ifdef FLASH_DEBUG |
| 561 | printf("\nflash_erase: erase %d sectors (%d to %d incl.) from\n" |
| 562 | " Bank # %d: ", s_last - s_first + 1, s_first, s_last, |
| 563 | (info - flash_info) + 1); |
| 564 | flash_print_info(info); |
| 565 | #endif |
| 566 | |
| 567 | if ((s_first < 0) || (s_first > s_last)) { |
| 568 | if (info->flash_id == FLASH_UNKNOWN) { |
| 569 | printf ("- missing\n"); |
| 570 | } else { |
| 571 | printf ("- no sectors to erase\n"); |
| 572 | } |
| 573 | return 1; |
| 574 | } |
| 575 | |
| 576 | prot = 0; |
| 577 | for (sect=s_first; sect<=s_last; ++sect) { |
| 578 | if (info->protect[sect]) { |
| 579 | prot++; |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | if (prot) { |
| 584 | printf("- Warning: %d protected sector%s will not be erased!\n", |
| 585 | prot, (prot > 1 ? "s" : "")); |
| 586 | } |
| 587 | |
| 588 | start = get_timer (0); |
| 589 | last = 0; |
| 590 | haderr = 0; |
| 591 | |
| 592 | for (sect = s_first; sect <= s_last; sect++) { |
| 593 | if (info->protect[sect] == 0) { /* not protected */ |
| 594 | ulong estart; |
| 595 | int sectdone; |
| 596 | |
| 597 | bank_erase_init(info, sect); |
| 598 | |
| 599 | /* wait at least 80us - let's wait 1 ms */ |
| 600 | udelay (1000); |
| 601 | |
| 602 | estart = get_timer(start); |
| 603 | |
| 604 | do { |
| 605 | now = get_timer(start); |
| 606 | |
| 607 | if (now - estart > CFG_FLASH_ERASE_TOUT) { |
| 608 | printf ("Timeout (sect %d)\n", sect); |
| 609 | haderr = 1; |
| 610 | rcode = 1; |
| 611 | break; |
| 612 | } |
| 613 | |
| 614 | #ifndef FLASH_DEBUG |
| 615 | /* show that we're waiting */ |
| 616 | if ((now - last) > 1000) { /* every second */ |
| 617 | putc ('.'); |
| 618 | last = now; |
| 619 | } |
| 620 | #endif |
| 621 | |
| 622 | sectdone = bank_erase_poll(info, sect); |
| 623 | |
| 624 | if (sectdone < 0) { |
| 625 | haderr = 1; |
| 626 | rcode = 1; |
| 627 | break; |
| 628 | } |
| 629 | |
| 630 | } while (!sectdone); |
| 631 | |
| 632 | if (haderr) |
| 633 | break; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | if (haderr > 0) |
| 638 | printf (" failed\n"); |
| 639 | else |
| 640 | printf (" done\n"); |
| 641 | |
| 642 | /* reset to read mode */ |
| 643 | for (sect = s_first; sect <= s_last; sect++) { |
| 644 | if (info->protect[sect] == 0) { /* not protected */ |
| 645 | bank_reset(info, sect); |
| 646 | } |
| 647 | } |
| 648 | return rcode; |
| 649 | } |
| 650 | |
| 651 | /*----------------------------------------------------------------------- |
| 652 | * Copy memory to flash, returns: |
| 653 | * 0 - OK |
| 654 | * 1 - write timeout |
| 655 | * 2 - Flash not erased |
| 656 | */ |
| 657 | |
| 658 | int |
| 659 | write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 660 | { |
| 661 | ulong cp, wp, data; |
| 662 | int i, l, rc; |
| 663 | |
| 664 | wp = (addr & ~3); /* get lower word aligned address */ |
| 665 | |
| 666 | /* |
| 667 | * handle unaligned start bytes |
| 668 | */ |
| 669 | if ((l = addr - wp) != 0) { |
| 670 | data = 0; |
| 671 | for (i=0, cp=wp; i<l; ++i, ++cp) { |
| 672 | data = (data << 8) | (*(uchar *)cp); |
| 673 | } |
| 674 | for (; i<4 && cnt>0; ++i) { |
| 675 | data = (data << 8) | *src++; |
| 676 | --cnt; |
| 677 | ++cp; |
| 678 | } |
| 679 | for (; cnt==0 && i<4; ++i, ++cp) { |
| 680 | data = (data << 8) | (*(uchar *)cp); |
| 681 | } |
| 682 | |
| 683 | if ((rc = write_word(info, wp, data)) != 0) { |
| 684 | return (rc); |
| 685 | } |
| 686 | wp += 4; |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | * handle word aligned part |
| 691 | */ |
| 692 | while (cnt >= 4) { |
| 693 | data = 0; |
| 694 | for (i=0; i<4; ++i) { |
| 695 | data = (data << 8) | *src++; |
| 696 | } |
| 697 | if ((rc = write_word(info, wp, data)) != 0) { |
| 698 | return (rc); |
| 699 | } |
| 700 | wp += 4; |
| 701 | cnt -= 4; |
| 702 | } |
| 703 | |
| 704 | if (cnt == 0) { |
| 705 | return (0); |
| 706 | } |
| 707 | |
| 708 | /* |
| 709 | * handle unaligned tail bytes |
| 710 | */ |
| 711 | data = 0; |
| 712 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { |
| 713 | data = (data << 8) | *src++; |
| 714 | --cnt; |
| 715 | } |
| 716 | for (; i<4; ++i, ++cp) { |
| 717 | data = (data << 8) | (*(uchar *)cp); |
| 718 | } |
| 719 | |
| 720 | return (write_word(info, wp, data)); |
| 721 | } |
| 722 | |
| 723 | /*----------------------------------------------------------------------- |
| 724 | * Write a word to Flash, returns: |
| 725 | * 0 - OK |
| 726 | * 1 - write timeout |
| 727 | * 2 - Flash not erased |
| 728 | */ |
| 729 | static int |
| 730 | write_word(flash_info_t *info, ulong dest, ulong data) |
| 731 | { |
| 732 | int retval; |
| 733 | |
| 734 | /* Check if Flash is (sufficiently) erased */ |
| 735 | if ((*(ulong *)dest & data) != data) { |
| 736 | return (2); |
| 737 | } |
| 738 | |
| 739 | retval = bank_write_word((bank_addr_t)dest, (bank_word_t)data); |
| 740 | |
| 741 | return (retval); |
| 742 | } |
| 743 | |
| 744 | /*----------------------------------------------------------------------- |
| 745 | */ |