wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de> |
| 4 | * |
| 5 | * (C) Copyright 2000-2004 |
| 6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 7 | * |
| 8 | * See file CREDITS for list of people who contributed to this |
| 9 | * project. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 24 | * MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <common.h> |
| 28 | #include <linux/byteorder/swab.h> |
| 29 | |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 30 | #define SWAP(x) __swab32(x) |
| 31 | |
| 32 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
| 33 | |
| 34 | /* Functions */ |
| 35 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| 36 | static int write_word (flash_info_t *info, ulong dest, ulong data); |
| 37 | static void flash_get_offsets (ulong base, flash_info_t *info); |
| 38 | |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 39 | /*----------------------------------------------------------------------- |
| 40 | */ |
| 41 | unsigned long flash_init (void) |
| 42 | { |
| 43 | int i; |
| 44 | ulong size = 0; |
| 45 | |
| 46 | for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { |
| 47 | switch (i) { |
| 48 | case 0: |
Jean-Christophe PLAGNIOL-VILLARD | e78220f | 2007-10-19 06:33:45 +0200 | [diff] [blame^] | 49 | flash_get_size ((vu_long *) PHYS_FLASH_1, &flash_info[i]); |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 50 | flash_get_offsets (PHYS_FLASH_1, &flash_info[i]); |
| 51 | break; |
| 52 | case 1: |
Jean-Christophe PLAGNIOL-VILLARD | e78220f | 2007-10-19 06:33:45 +0200 | [diff] [blame^] | 53 | flash_get_size ((vu_long *) PHYS_FLASH_2, &flash_info[i]); |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 54 | flash_get_offsets (PHYS_FLASH_2, &flash_info[i]); |
| 55 | break; |
| 56 | default: |
| 57 | panic ("configured too many flash banks!\n"); |
| 58 | break; |
| 59 | } |
| 60 | size += flash_info[i].size; |
| 61 | } |
| 62 | |
| 63 | /* Protect monitor and environment sectors */ |
| 64 | flash_protect ( FLAG_PROTECT_SET,CFG_FLASH_BASE,CFG_FLASH_BASE + monitor_flash_len - 1,&flash_info[0] ); |
| 65 | flash_protect ( FLAG_PROTECT_SET,CFG_ENV_ADDR,CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0] ); |
| 66 | |
| 67 | return size; |
| 68 | } |
| 69 | |
| 70 | /*----------------------------------------------------------------------- |
| 71 | */ |
| 72 | static void flash_get_offsets (ulong base, flash_info_t *info) |
| 73 | { |
| 74 | int i; |
| 75 | |
| 76 | if (info->flash_id == FLASH_UNKNOWN) return; |
| 77 | |
| 78 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) { |
| 79 | for (i = 0; i < info->sector_count; i++) { |
| 80 | info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE); |
| 81 | info->protect[i] = 0; |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /*----------------------------------------------------------------------- |
| 87 | */ |
| 88 | void flash_print_info (flash_info_t *info) |
| 89 | { |
| 90 | int i; |
| 91 | |
| 92 | if (info->flash_id == FLASH_UNKNOWN) { |
| 93 | printf ("missing or unknown FLASH type\n"); |
| 94 | return; |
| 95 | } |
| 96 | |
| 97 | switch (info->flash_id & FLASH_VENDMASK) { |
| 98 | case FLASH_MAN_AMD: printf ("AMD "); break; |
| 99 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; |
| 100 | default: printf ("Unknown Vendor "); break; |
| 101 | } |
| 102 | |
| 103 | switch (info->flash_id & FLASH_TYPEMASK) { |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 104 | case FLASH_AMLV640U: printf ("AM29LV640ML (64Mbit, uniform sector size)\n"); |
| 105 | break; |
Wolfgang Denk | 45237bc | 2005-10-05 00:03:55 +0200 | [diff] [blame] | 106 | case FLASH_S29GL064M: printf ("S29GL064M (64Mbit, top boot sector size)\n"); |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 107 | break; |
| 108 | default: printf ("Unknown Chip Type\n"); |
| 109 | break; |
| 110 | } |
| 111 | |
| 112 | printf (" Size: %ld MB in %d Sectors\n", |
| 113 | info->size >> 20, info->sector_count); |
| 114 | |
| 115 | printf (" Sector Start Addresses:"); |
| 116 | for (i=0; i<info->sector_count; ++i) { |
| 117 | if ((i % 5) == 0) |
| 118 | printf ("\n "); |
| 119 | printf (" %08lX%s", |
| 120 | info->start[i], |
| 121 | info->protect[i] ? " (RO)" : " " |
| 122 | ); |
| 123 | } |
| 124 | printf ("\n"); |
| 125 | return; |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * The following code cannot be run from FLASH! |
| 130 | */ |
| 131 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| 132 | { |
| 133 | short i; |
| 134 | ulong value; |
| 135 | ulong base = (ulong)addr; |
| 136 | |
| 137 | /* Write auto select command: read Manufacturer ID */ |
| 138 | addr[0x0555] = 0x00AA00AA; |
| 139 | addr[0x02AA] = 0x00550055; |
| 140 | addr[0x0555] = 0x00900090; |
| 141 | |
| 142 | value = addr[0]; |
| 143 | |
| 144 | debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value); |
| 145 | |
| 146 | switch (value) { |
| 147 | case AMD_MANUFACT: |
| 148 | debug ("Manufacturer: AMD\n"); |
| 149 | info->flash_id = FLASH_MAN_AMD; |
| 150 | break; |
| 151 | case FUJ_MANUFACT: |
| 152 | debug ("Manufacturer: FUJITSU\n"); |
| 153 | info->flash_id = FLASH_MAN_FUJ; |
| 154 | break; |
| 155 | default: |
| 156 | debug ("Manufacturer: *** unknown ***\n"); |
| 157 | info->flash_id = FLASH_UNKNOWN; |
| 158 | info->sector_count = 0; |
| 159 | info->size = 0; |
| 160 | return (0); /* no or unknown flash */ |
| 161 | } |
| 162 | |
| 163 | value = addr[1]; /* device ID */ |
| 164 | |
| 165 | debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value); |
| 166 | |
| 167 | switch (value) { |
| 168 | |
| 169 | case AMD_ID_MIRROR: |
| 170 | debug ("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n", |
| 171 | addr[14], addr[15]); |
| 172 | switch(addr[14]) { |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 173 | case AMD_ID_LV640U_2: |
| 174 | if (addr[15] != AMD_ID_LV640U_3) { |
| 175 | debug ("Chip: AMLV640U -> unknown\n"); |
| 176 | info->flash_id = FLASH_UNKNOWN; |
| 177 | } else { |
| 178 | debug ("Chip: AMLV640U\n"); |
| 179 | info->flash_id += FLASH_AMLV640U; |
| 180 | info->sector_count = 128; |
| 181 | info->size = 0x01000000; |
| 182 | } |
| 183 | break; /* => 16 MB */ |
Wolfgang Denk | 45237bc | 2005-10-05 00:03:55 +0200 | [diff] [blame] | 184 | case AMD_ID_GL064MT_2: |
| 185 | if (addr[15] != AMD_ID_GL064MT_3) { |
| 186 | debug ("Chip: S29GL064M-R3 -> unknown\n"); |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 187 | info->flash_id = FLASH_UNKNOWN; |
| 188 | } else { |
Wolfgang Denk | 45237bc | 2005-10-05 00:03:55 +0200 | [diff] [blame] | 189 | debug ("Chip: S29GL064M-R3\n"); |
| 190 | info->flash_id += FLASH_S29GL064M; |
| 191 | info->sector_count = 128; |
| 192 | info->size = 0x01000000; |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 193 | } |
Wolfgang Denk | 45237bc | 2005-10-05 00:03:55 +0200 | [diff] [blame] | 194 | break; /* => 16 MB */ |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 195 | default: |
| 196 | debug ("Chip: *** unknown ***\n"); |
| 197 | info->flash_id = FLASH_UNKNOWN; |
| 198 | break; |
| 199 | } |
| 200 | break; |
| 201 | |
| 202 | default: |
| 203 | info->flash_id = FLASH_UNKNOWN; |
| 204 | return (0); /* => no or unknown flash */ |
| 205 | } |
| 206 | |
| 207 | /* set up sector start address table */ |
| 208 | switch (value) { |
| 209 | case AMD_ID_MIRROR: |
| 210 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 211 | /* only known types here - no default */ |
| 212 | case FLASH_AMLV128U: |
| 213 | case FLASH_AMLV640U: |
| 214 | case FLASH_AMLV320U: |
| 215 | for (i = 0; i < info->sector_count; i++) { |
| 216 | info->start[i] = base; |
| 217 | base += 0x20000; |
| 218 | } |
| 219 | break; |
| 220 | case FLASH_AMLV320B: |
| 221 | for (i = 0; i < info->sector_count; i++) { |
| 222 | info->start[i] = base; |
| 223 | /* |
| 224 | * The first 8 sectors are 8 kB, |
| 225 | * all the other ones are 64 kB |
| 226 | */ |
| 227 | base += (i < 8) |
| 228 | ? 2 * ( 8 << 10) |
| 229 | : 2 * (64 << 10); |
| 230 | } |
| 231 | break; |
| 232 | } |
| 233 | break; |
| 234 | |
| 235 | default: |
| 236 | return (0); |
| 237 | break; |
| 238 | } |
| 239 | |
| 240 | #if 0 |
| 241 | /* check for protected sectors */ |
| 242 | for (i = 0; i < info->sector_count; i++) { |
| 243 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
| 244 | /* D0 = 1 if protected */ |
| 245 | addr = (volatile unsigned long *)(info->start[i]); |
| 246 | info->protect[i] = addr[2] & 1; |
| 247 | } |
| 248 | #endif |
| 249 | |
| 250 | /* |
| 251 | * Prevent writes to uninitialized FLASH. |
| 252 | */ |
| 253 | if (info->flash_id != FLASH_UNKNOWN) { |
| 254 | addr = (volatile unsigned long *)info->start[0]; |
| 255 | |
| 256 | *addr = 0x00F000F0; /* reset bank */ |
| 257 | } |
| 258 | |
| 259 | return (info->size); |
| 260 | } |
| 261 | |
| 262 | |
| 263 | /*----------------------------------------------------------------------- |
| 264 | */ |
| 265 | |
| 266 | int flash_erase (flash_info_t *info, int s_first, int s_last) |
| 267 | { |
| 268 | vu_long *addr = (vu_long*)(info->start[0]); |
| 269 | int flag, prot, sect, l_sect; |
| 270 | ulong start, now, last; |
| 271 | |
| 272 | debug ("flash_erase: first: %d last: %d\n", s_first, s_last); |
| 273 | |
| 274 | if ((s_first < 0) || (s_first > s_last)) { |
| 275 | if (info->flash_id == FLASH_UNKNOWN) { |
| 276 | printf ("- missing\n"); |
| 277 | } else { |
| 278 | printf ("- no sectors to erase\n"); |
| 279 | } |
| 280 | return 1; |
| 281 | } |
| 282 | |
| 283 | if ((info->flash_id == FLASH_UNKNOWN) || |
| 284 | (info->flash_id > FLASH_AMD_COMP)) { |
| 285 | printf ("Can't erase unknown flash type %08lx - aborted\n", |
| 286 | info->flash_id); |
| 287 | return 1; |
| 288 | } |
| 289 | |
| 290 | prot = 0; |
| 291 | for (sect=s_first; sect<=s_last; ++sect) { |
| 292 | if (info->protect[sect]) { |
| 293 | prot++; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | if (prot) { |
| 298 | printf ("- Warning: %d protected sectors will not be erased!\n", |
| 299 | prot); |
| 300 | } else { |
| 301 | printf ("\n"); |
| 302 | } |
| 303 | |
| 304 | l_sect = -1; |
| 305 | |
| 306 | /* Disable interrupts which might cause a timeout here */ |
| 307 | flag = disable_interrupts(); |
| 308 | |
| 309 | addr[0x0555] = 0x00AA00AA; |
| 310 | addr[0x02AA] = 0x00550055; |
| 311 | addr[0x0555] = 0x00800080; |
| 312 | addr[0x0555] = 0x00AA00AA; |
| 313 | addr[0x02AA] = 0x00550055; |
| 314 | |
| 315 | /* Start erase on unprotected sectors */ |
| 316 | for (sect = s_first; sect<=s_last; sect++) { |
| 317 | if (info->protect[sect] == 0) { /* not protected */ |
| 318 | addr = (vu_long*)(info->start[sect]); |
| 319 | addr[0] = 0x00300030; |
| 320 | l_sect = sect; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | /* re-enable interrupts if necessary */ |
| 325 | if (flag) |
| 326 | enable_interrupts(); |
| 327 | |
| 328 | /* wait at least 80us - let's wait 1 ms */ |
| 329 | udelay (1000); |
| 330 | |
| 331 | /* |
| 332 | * We wait for the last triggered sector |
| 333 | */ |
| 334 | if (l_sect < 0) |
| 335 | goto DONE; |
| 336 | |
| 337 | start = get_timer (0); |
| 338 | last = start; |
| 339 | addr = (vu_long*)(info->start[l_sect]); |
| 340 | while ((addr[0] & 0x00800080) != 0x00800080) { |
| 341 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
| 342 | printf ("Timeout\n"); |
| 343 | return 1; |
| 344 | } |
| 345 | /* show that we're waiting */ |
| 346 | if ((now - last) > 100000) { /* every second */ |
| 347 | putc ('.'); |
| 348 | last = now; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | DONE: |
| 353 | /* reset to read mode */ |
| 354 | addr = (volatile unsigned long *)info->start[0]; |
| 355 | addr[0] = 0x00F000F0; /* reset bank */ |
| 356 | |
| 357 | printf (" done\n"); |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | /*----------------------------------------------------------------------- |
| 362 | * Copy memory to flash, returns: |
| 363 | * 0 - OK |
| 364 | * 1 - write timeout |
| 365 | * 2 - Flash not erased |
| 366 | */ |
| 367 | |
| 368 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 369 | { |
| 370 | ulong cp, wp, data; |
| 371 | int i, l, rc; |
| 372 | |
| 373 | wp = (addr & ~3); /* get lower word aligned address */ |
| 374 | |
| 375 | /* |
| 376 | * handle unaligned start bytes |
| 377 | */ |
| 378 | if ((l = addr - wp) != 0) { |
| 379 | data = 0; |
| 380 | for (i=0, cp=wp; i<l; ++i, ++cp) { |
| 381 | data = (data << 8) | (*(uchar *)cp); |
| 382 | } |
| 383 | for (; i<4 && cnt>0; ++i) { |
| 384 | data = (data << 8) | *src++; |
| 385 | --cnt; |
| 386 | ++cp; |
| 387 | } |
| 388 | for (; cnt==0 && i<4; ++i, ++cp) { |
| 389 | data = (data << 8) | (*(uchar *)cp); |
| 390 | } |
| 391 | |
| 392 | if ((rc = write_word(info, wp, SWAP(data))) != 0) { |
| 393 | return (rc); |
| 394 | } |
| 395 | wp += 4; |
| 396 | } |
| 397 | |
| 398 | /* |
| 399 | * handle word aligned part |
| 400 | */ |
| 401 | while (cnt >= 4) { |
| 402 | data = 0; |
| 403 | for (i=0; i<4; ++i) { |
| 404 | data = (data << 8) | *src++; |
| 405 | } |
| 406 | if ((rc = write_word(info, wp, SWAP(data))) != 0) { |
| 407 | return (rc); |
| 408 | } |
| 409 | wp += 4; |
| 410 | cnt -= 4; |
| 411 | } |
| 412 | |
| 413 | if (cnt == 0) { |
| 414 | return (0); |
| 415 | } |
| 416 | |
| 417 | /* |
| 418 | * handle unaligned tail bytes |
| 419 | */ |
| 420 | data = 0; |
| 421 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { |
| 422 | data = (data << 8) | *src++; |
| 423 | --cnt; |
| 424 | } |
| 425 | for (; i<4; ++i, ++cp) { |
| 426 | data = (data << 8) | (*(uchar *)cp); |
| 427 | } |
| 428 | |
| 429 | return (write_word(info, wp, SWAP(data))); |
| 430 | } |
| 431 | |
| 432 | /*----------------------------------------------------------------------- |
| 433 | * Write a word to Flash, returns: |
| 434 | * 0 - OK |
| 435 | * 1 - write timeout |
| 436 | * 2 - Flash not erased |
| 437 | */ |
| 438 | static int write_word (flash_info_t *info, ulong dest, ulong data) |
| 439 | { |
| 440 | vu_long *addr = (vu_long*)(info->start[0]); |
| 441 | ulong start; |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 442 | int flag; |
wdenk | ca0e774 | 2004-06-09 15:37:23 +0000 | [diff] [blame] | 443 | |
| 444 | /* Check if Flash is (sufficiently) erased */ |
| 445 | if ((*((vu_long *)dest) & data) != data) { |
| 446 | return (2); |
| 447 | } |
| 448 | |
| 449 | /* Disable interrupts which might cause a timeout here */ |
| 450 | flag = disable_interrupts(); |
| 451 | |
| 452 | addr[0x0555] = 0x00AA00AA; |
| 453 | addr[0x02AA] = 0x00550055; |
| 454 | addr[0x0555] = 0x00A000A0; |
| 455 | |
| 456 | *((vu_long *)dest) = data; |
| 457 | |
| 458 | /* re-enable interrupts if necessary */ |
| 459 | if (flag) |
| 460 | enable_interrupts(); |
| 461 | |
| 462 | /* data polling for D7 */ |
| 463 | start = get_timer (0); |
| 464 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { |
| 465 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { |
| 466 | return (1); |
| 467 | } |
| 468 | } |
| 469 | return (0); |
| 470 | } |