wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000, 2001 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com |
| 6 | * Add support the Sharp chips on the mpc8260ads. |
| 7 | * I started with board/ip860/flash.c and made changes I found in |
| 8 | * the MTD project by David Schleef. |
| 9 | * |
| 10 | * See file CREDITS for list of people who contributed to this |
| 11 | * project. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License as |
| 15 | * published by the Free Software Foundation; either version 2 of |
| 16 | * the License, or (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 26 | * MA 02111-1307 USA |
| 27 | */ |
| 28 | |
| 29 | #include <common.h> |
| 30 | |
| 31 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 32 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 33 | |
Jean-Christophe PLAGNIOL-VILLARD | 53db4cd | 2008-09-10 22:48:04 +0200 | [diff] [blame] | 34 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 35 | # ifndef CONFIG_ENV_ADDR |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 36 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 37 | # endif |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 38 | # ifndef CONFIG_ENV_SIZE |
| 39 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 40 | # endif |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 41 | # ifndef CONFIG_ENV_SECT_SIZE |
| 42 | # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 43 | # endif |
| 44 | #endif |
| 45 | |
| 46 | /*----------------------------------------------------------------------- |
| 47 | * Functions |
| 48 | */ |
| 49 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| 50 | static int write_word (flash_info_t *info, ulong dest, ulong data); |
| 51 | static int clear_block_lock_bit(vu_long * addr); |
| 52 | |
| 53 | /*----------------------------------------------------------------------- |
| 54 | */ |
| 55 | |
| 56 | unsigned long flash_init (void) |
| 57 | { |
wdenk | bf2f8c9 | 2003-05-22 22:52:13 +0000 | [diff] [blame] | 58 | #ifndef CONFIG_MPC8266ADS |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 59 | volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 60 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
| 61 | volatile ip860_bcsr_t *bcsr = (ip860_bcsr_t *)BCSR_BASE; |
| 62 | #endif |
| 63 | unsigned long size; |
| 64 | int i; |
| 65 | |
| 66 | /* Init: enable write, |
| 67 | * or we cannot even write flash commands |
| 68 | */ |
wdenk | bf2f8c9 | 2003-05-22 22:52:13 +0000 | [diff] [blame] | 69 | #ifndef CONFIG_MPC8266ADS |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 70 | bcsr->bd_ctrl |= BD_CTRL_FLWE; |
| 71 | #endif |
| 72 | |
| 73 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 74 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 75 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 76 | |
| 77 | /* set the default sector offset */ |
| 78 | } |
| 79 | |
| 80 | /* Static FLASH Bank configuration here - FIXME XXX */ |
| 81 | |
| 82 | size = flash_get_size((vu_long *)FLASH_BASE, &flash_info[0]); |
| 83 | |
| 84 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 85 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 86 | size, size<<20); |
| 87 | } |
| 88 | |
wdenk | bf2f8c9 | 2003-05-22 22:52:13 +0000 | [diff] [blame] | 89 | #ifndef CONFIG_MPC8266ADS |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 90 | /* Remap FLASH according to real size */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 91 | memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
| 92 | memctl->memc_br1 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 93 | (memctl->memc_br1 & ~(BR_BA_MSK)); |
| 94 | #endif |
| 95 | /* Re-do sizing to get full correct info */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 96 | size = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 97 | |
| 98 | flash_info[0].size = size; |
| 99 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 100 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 101 | /* monitor protection ON by default */ |
| 102 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 103 | CONFIG_SYS_MONITOR_BASE, |
| 104 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 105 | &flash_info[0]); |
| 106 | #endif |
| 107 | |
Jean-Christophe PLAGNIOL-VILLARD | 53db4cd | 2008-09-10 22:48:04 +0200 | [diff] [blame] | 108 | #ifdef CONFIG_ENV_IS_IN_FLASH |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 109 | /* ENV protection ON by default */ |
| 110 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 111 | CONFIG_ENV_ADDR, |
| 112 | CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 113 | &flash_info[0]); |
| 114 | #endif |
| 115 | return (size); |
| 116 | } |
| 117 | |
| 118 | /*----------------------------------------------------------------------- |
| 119 | */ |
| 120 | void flash_print_info (flash_info_t *info) |
| 121 | { |
| 122 | int i; |
| 123 | |
| 124 | if (info->flash_id == FLASH_UNKNOWN) { |
| 125 | printf ("missing or unknown FLASH type\n"); |
| 126 | return; |
| 127 | } |
| 128 | |
| 129 | switch (info->flash_id & FLASH_VENDMASK) { |
| 130 | case FLASH_MAN_INTEL: printf ("Intel "); break; |
| 131 | case FLASH_MAN_SHARP: printf ("Sharp "); break; |
| 132 | default: printf ("Unknown Vendor "); break; |
| 133 | } |
| 134 | |
| 135 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 136 | case FLASH_28F016SV: printf ("28F016SV (16 Mbit, 32 x 64k)\n"); |
| 137 | break; |
| 138 | case FLASH_28F160S3: printf ("28F160S3 (16 Mbit, 32 x 512K)\n"); |
| 139 | break; |
| 140 | case FLASH_28F320S3: printf ("28F320S3 (32 Mbit, 64 x 512K)\n"); |
| 141 | break; |
| 142 | case FLASH_LH28F016SCT: printf ("28F016SC (16 Mbit, 32 x 64K)\n"); |
| 143 | break; |
| 144 | default: printf ("Unknown Chip Type\n"); |
| 145 | break; |
| 146 | } |
| 147 | |
| 148 | printf (" Size: %ld MB in %d Sectors\n", |
| 149 | info->size >> 20, info->sector_count); |
| 150 | |
| 151 | printf (" Sector Start Addresses:"); |
| 152 | for (i=0; i<info->sector_count; ++i) { |
| 153 | if ((i % 5) == 0) |
| 154 | printf ("\n "); |
| 155 | printf (" %08lX%s", |
| 156 | info->start[i], |
| 157 | info->protect[i] ? " (RO)" : " " |
| 158 | ); |
| 159 | } |
| 160 | printf ("\n"); |
| 161 | } |
| 162 | |
| 163 | /*----------------------------------------------------------------------- |
| 164 | */ |
| 165 | |
| 166 | |
| 167 | /*----------------------------------------------------------------------- |
| 168 | */ |
| 169 | |
| 170 | /* |
| 171 | * The following code cannot be run from FLASH! |
| 172 | */ |
| 173 | |
| 174 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| 175 | { |
| 176 | short i; |
| 177 | ulong value; |
| 178 | ulong base = (ulong)addr; |
| 179 | ulong sector_offset; |
| 180 | |
| 181 | /* Write "Intelligent Identifier" command: read Manufacturer ID */ |
| 182 | *addr = 0x90909090; |
| 183 | |
| 184 | value = addr[0] & 0x00FF00FF; |
| 185 | switch (value) { |
| 186 | case MT_MANUFACT: /* SHARP, MT or => Intel */ |
| 187 | case INTEL_ALT_MANU: |
| 188 | info->flash_id = FLASH_MAN_INTEL; |
| 189 | break; |
| 190 | default: |
| 191 | printf("unknown manufacturer: %x\n", (unsigned int)value); |
| 192 | info->flash_id = FLASH_UNKNOWN; |
| 193 | info->sector_count = 0; |
| 194 | info->size = 0; |
| 195 | return (0); /* no or unknown flash */ |
| 196 | } |
| 197 | |
| 198 | value = addr[1]; /* device ID */ |
| 199 | |
| 200 | switch (value) { |
| 201 | case (INTEL_ID_28F016S): |
| 202 | info->flash_id += FLASH_28F016SV; |
| 203 | info->sector_count = 32; |
| 204 | info->size = 0x00400000; |
| 205 | sector_offset = 0x20000; |
| 206 | break; /* => 2x2 MB */ |
| 207 | |
| 208 | case (INTEL_ID_28F160S3): |
| 209 | info->flash_id += FLASH_28F160S3; |
| 210 | info->sector_count = 32; |
| 211 | info->size = 0x00400000; |
| 212 | sector_offset = 0x20000; |
| 213 | break; /* => 2x2 MB */ |
| 214 | |
| 215 | case (INTEL_ID_28F320S3): |
| 216 | info->flash_id += FLASH_28F320S3; |
| 217 | info->sector_count = 64; |
| 218 | info->size = 0x00800000; |
| 219 | sector_offset = 0x20000; |
| 220 | break; /* => 2x4 MB */ |
| 221 | |
| 222 | case SHARP_ID_28F016SCL: |
| 223 | case SHARP_ID_28F016SCZ: |
| 224 | info->flash_id = FLASH_MAN_SHARP | FLASH_LH28F016SCT; |
| 225 | info->sector_count = 32; |
| 226 | info->size = 0x00800000; |
| 227 | sector_offset = 0x40000; |
| 228 | break; /* => 4x2 MB */ |
| 229 | |
| 230 | |
| 231 | default: |
| 232 | info->flash_id = FLASH_UNKNOWN; |
| 233 | return (0); /* => no or unknown flash */ |
| 234 | |
| 235 | } |
| 236 | |
| 237 | /* set up sector start address table */ |
| 238 | for (i = 0; i < info->sector_count; i++) { |
| 239 | info->start[i] = base; |
| 240 | base += sector_offset; |
| 241 | /* don't know how to check sector protection */ |
| 242 | info->protect[i] = 0; |
| 243 | } |
| 244 | |
| 245 | /* |
| 246 | * Prevent writes to uninitialized FLASH. |
| 247 | */ |
| 248 | if (info->flash_id != FLASH_UNKNOWN) { |
| 249 | addr = (vu_long *)info->start[0]; |
| 250 | |
| 251 | *addr = 0xFFFFFF; /* reset bank to read array mode */ |
| 252 | } |
| 253 | |
| 254 | return (info->size); |
| 255 | } |
| 256 | |
| 257 | |
| 258 | /*----------------------------------------------------------------------- |
| 259 | */ |
| 260 | |
| 261 | int flash_erase (flash_info_t *info, int s_first, int s_last) |
| 262 | { |
| 263 | int flag, prot, sect; |
| 264 | ulong start, now, last; |
| 265 | |
| 266 | if ((s_first < 0) || (s_first > s_last)) { |
| 267 | if (info->flash_id == FLASH_UNKNOWN) { |
| 268 | printf ("- missing\n"); |
| 269 | } else { |
| 270 | printf ("- no sectors to erase\n"); |
| 271 | } |
| 272 | return 1; |
| 273 | } |
| 274 | |
| 275 | if ( ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) |
| 276 | && ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_SHARP) ) { |
| 277 | printf ("Can't erase unknown flash type %08lx - aborted\n", |
| 278 | info->flash_id); |
| 279 | return 1; |
| 280 | } |
| 281 | |
| 282 | prot = 0; |
| 283 | for (sect=s_first; sect<=s_last; ++sect) { |
| 284 | if (info->protect[sect]) { |
| 285 | prot++; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | if (prot) { |
| 290 | printf ("- Warning: %d protected sectors will not be erased!\n", |
| 291 | prot); |
| 292 | } else { |
| 293 | printf ("\n"); |
| 294 | } |
| 295 | |
| 296 | /* Make Sure Block Lock Bit is not set. */ |
| 297 | if(clear_block_lock_bit((vu_long *)(info->start[s_first]))){ |
| 298 | return 1; |
| 299 | } |
| 300 | |
| 301 | |
| 302 | /* Start erase on unprotected sectors */ |
| 303 | for (sect = s_first; sect<=s_last; sect++) { |
| 304 | if (info->protect[sect] == 0) { /* not protected */ |
| 305 | vu_long *addr = (vu_long *)(info->start[sect]); |
| 306 | |
| 307 | last = start = get_timer (0); |
| 308 | |
| 309 | /* Disable interrupts which might cause a timeout here */ |
| 310 | flag = disable_interrupts(); |
| 311 | |
| 312 | /* Reset Array */ |
| 313 | *addr = 0xffffffff; |
| 314 | /* Clear Status Register */ |
| 315 | *addr = 0x50505050; |
| 316 | /* Single Block Erase Command */ |
| 317 | *addr = 0x20202020; |
| 318 | /* Confirm */ |
| 319 | *addr = 0xD0D0D0D0; |
| 320 | |
| 321 | if((info->flash_id & FLASH_TYPEMASK) != FLASH_LH28F016SCT) { |
| 322 | /* Resume Command, as per errata update */ |
| 323 | *addr = 0xD0D0D0D0; |
| 324 | } |
| 325 | |
| 326 | /* re-enable interrupts if necessary */ |
| 327 | if (flag) |
| 328 | enable_interrupts(); |
| 329 | |
| 330 | /* wait at least 80us - let's wait 1 ms */ |
| 331 | udelay (1000); |
| 332 | while ((*addr & 0x80808080) != 0x80808080) { |
| 333 | if(*addr & 0x20202020){ |
| 334 | printf("Error in Block Erase - Lock Bit may be set!\n"); |
| 335 | printf("Status Register = 0x%X\n", (uint)*addr); |
| 336 | *addr = 0xFFFFFFFF; /* reset bank */ |
| 337 | return 1; |
| 338 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 339 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 340 | printf ("Timeout\n"); |
| 341 | *addr = 0xFFFFFFFF; /* reset bank */ |
| 342 | return 1; |
| 343 | } |
| 344 | /* show that we're waiting */ |
| 345 | if ((now - last) > 1000) { /* every second */ |
| 346 | putc ('.'); |
| 347 | last = now; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | /* reset to read mode */ |
| 352 | *addr = 0xFFFFFFFF; |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | printf (" done\n"); |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | /*----------------------------------------------------------------------- |
| 361 | * Copy memory to flash, returns: |
| 362 | * 0 - OK |
| 363 | * 1 - write timeout |
| 364 | * 2 - Flash not erased |
| 365 | */ |
| 366 | |
| 367 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 368 | { |
| 369 | ulong cp, wp, data; |
| 370 | int i, l, rc; |
| 371 | |
| 372 | wp = (addr & ~3); /* get lower word aligned address */ |
| 373 | |
| 374 | /* |
| 375 | * handle unaligned start bytes |
| 376 | */ |
| 377 | if ((l = addr - wp) != 0) { |
| 378 | data = 0; |
| 379 | for (i=0, cp=wp; i<l; ++i, ++cp) { |
| 380 | data = (data << 8) | (*(uchar *)cp); |
| 381 | } |
| 382 | for (; i<4 && cnt>0; ++i) { |
| 383 | data = (data << 8) | *src++; |
| 384 | --cnt; |
| 385 | ++cp; |
| 386 | } |
| 387 | for (; cnt==0 && i<4; ++i, ++cp) { |
| 388 | data = (data << 8) | (*(uchar *)cp); |
| 389 | } |
| 390 | |
| 391 | if ((rc = write_word(info, wp, data)) != 0) { |
| 392 | return (rc); |
| 393 | } |
| 394 | wp += 4; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * handle word aligned part |
| 399 | */ |
| 400 | while (cnt >= 4) { |
| 401 | data = 0; |
| 402 | for (i=0; i<4; ++i) { |
| 403 | data = (data << 8) | *src++; |
| 404 | } |
| 405 | if ((rc = write_word(info, wp, data)) != 0) { |
| 406 | return (rc); |
| 407 | } |
| 408 | wp += 4; |
| 409 | cnt -= 4; |
| 410 | } |
| 411 | |
| 412 | if (cnt == 0) { |
| 413 | return (0); |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | * handle unaligned tail bytes |
| 418 | */ |
| 419 | data = 0; |
| 420 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { |
| 421 | data = (data << 8) | *src++; |
| 422 | --cnt; |
| 423 | } |
| 424 | for (; i<4; ++i, ++cp) { |
| 425 | data = (data << 8) | (*(uchar *)cp); |
| 426 | } |
| 427 | |
| 428 | return (write_word(info, wp, data)); |
| 429 | } |
| 430 | |
| 431 | /*----------------------------------------------------------------------- |
| 432 | * Write a word to Flash, returns: |
| 433 | * 0 - OK |
| 434 | * 1 - write timeout |
| 435 | * 2 - Flash not erased |
| 436 | */ |
| 437 | static int write_word (flash_info_t *info, ulong dest, ulong data) |
| 438 | { |
| 439 | vu_long *addr = (vu_long *)dest; |
| 440 | ulong start, csr; |
| 441 | int flag; |
| 442 | |
| 443 | /* Check if Flash is (sufficiently) erased */ |
| 444 | if ((*addr & data) != data) { |
| 445 | return (2); |
| 446 | } |
| 447 | /* Disable interrupts which might cause a timeout here */ |
| 448 | flag = disable_interrupts(); |
| 449 | |
| 450 | /* Write Command */ |
| 451 | *addr = 0x10101010; |
| 452 | |
| 453 | /* Write Data */ |
| 454 | *addr = data; |
| 455 | |
| 456 | /* re-enable interrupts if necessary */ |
| 457 | if (flag) |
| 458 | enable_interrupts(); |
| 459 | |
| 460 | /* data polling for D7 */ |
| 461 | start = get_timer (0); |
| 462 | flag = 0; |
| 463 | while (((csr = *addr) & 0x80808080) != 0x80808080) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 464 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 465 | flag = 1; |
| 466 | break; |
| 467 | } |
| 468 | } |
| 469 | if (csr & 0x40404040) { |
| 470 | printf ("CSR indicates write error (%08lx) at %08lx\n", csr, (ulong)addr); |
| 471 | flag = 1; |
| 472 | } |
| 473 | |
| 474 | /* Clear Status Registers Command */ |
| 475 | *addr = 0x50505050; |
| 476 | /* Reset to read array mode */ |
| 477 | *addr = 0xFFFFFFFF; |
| 478 | |
| 479 | return (flag); |
| 480 | } |
| 481 | |
| 482 | /*----------------------------------------------------------------------- |
| 483 | * Clear Block Lock Bit, returns: |
| 484 | * 0 - OK |
| 485 | * 1 - Timeout |
| 486 | */ |
| 487 | |
| 488 | static int clear_block_lock_bit(vu_long * addr) |
| 489 | { |
| 490 | ulong start, now; |
| 491 | |
| 492 | /* Reset Array */ |
| 493 | *addr = 0xffffffff; |
| 494 | /* Clear Status Register */ |
| 495 | *addr = 0x50505050; |
| 496 | |
| 497 | *addr = 0x60606060; |
| 498 | *addr = 0xd0d0d0d0; |
| 499 | |
| 500 | start = get_timer (0); |
| 501 | while(*addr != 0x80808080){ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 502 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | b666c8f | 2003-03-06 00:58:30 +0000 | [diff] [blame] | 503 | printf ("Timeout on clearing Block Lock Bit\n"); |
| 504 | *addr = 0xFFFFFFFF; /* reset bank */ |
| 505 | return 1; |
| 506 | } |
| 507 | } |
| 508 | return 0; |
| 509 | } |