wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2003 |
| 3 | * Martin Winistoerfer, martinwinistoerfer@gmx.ch. |
| 4 | * |
Wolfgang Denk | 1a45966 | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 5 | * SPDX-License-Identifier: GPL-2.0+ |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * File: flash.c |
| 10 | * |
| 11 | * Discription: This Driver is for 28F320J3A, 28F640J3A and |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 12 | * 28F128J3A Intel flashs working in 16 Bit mode. |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 13 | * They are single bank flashs. |
| 14 | * |
| 15 | * Most of this code is taken from existing u-boot |
| 16 | * source code. |
| 17 | */ |
| 18 | |
| 19 | |
| 20 | #include <common.h> |
| 21 | #include <mpc5xx.h> |
| 22 | |
Jean-Christophe PLAGNIOL-VILLARD | 5a1aceb | 2008-09-10 22:48:04 +0200 | [diff] [blame] | 23 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
Jean-Christophe PLAGNIOL-VILLARD | 0e8d158 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 24 | # ifndef CONFIG_ENV_ADDR |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 25 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 26 | # endif |
Jean-Christophe PLAGNIOL-VILLARD | 0e8d158 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 27 | # ifndef CONFIG_ENV_SIZE |
| 28 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 29 | # endif |
Jean-Christophe PLAGNIOL-VILLARD | 0e8d158 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 30 | # ifndef CONFIG_ENV_SECT_SIZE |
| 31 | # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 32 | # endif |
| 33 | #endif |
| 34 | |
| 35 | #define FLASH_ID_MASK 0xFFFF |
| 36 | #define FLASH_BLOCK_SIZE 0x00010000 |
| 37 | #define FLASH_CMD_READ_ID 0x0090 |
| 38 | #define FLASH_CMD_RESET 0x00ff |
| 39 | #define FLASH_CMD_BLOCK_ERASE 0x0020 |
| 40 | #define FLASH_CMD_ERASE_CONFIRM 0x00D0 |
| 41 | #define FLASH_CMD_CLEAR_STATUS 0x0050 |
| 42 | #define FLASH_CMD_SUSPEND_ERASE 0x00B0 |
| 43 | #define FLASH_CMD_WRITE 0x0040 |
| 44 | #define FLASH_CMD_PROTECT 0x0060 |
| 45 | #define FLASH_CMD_PROTECT_SET 0x0001 |
| 46 | #define FLASH_CMD_PROTECT_CLEAR 0x00D0 |
| 47 | #define FLASH_STATUS_DONE 0x0080 |
| 48 | |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 49 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 50 | |
| 51 | /* |
| 52 | * Local function prototypes |
| 53 | */ |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 54 | static ulong flash_get_size (vu_short *addr, flash_info_t *info); |
| 55 | static int write_short (flash_info_t *info, ulong dest, ushort data); |
| 56 | static void flash_get_offsets (ulong base, flash_info_t *info); |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 57 | |
| 58 | /* |
| 59 | * Initialize flash |
| 60 | */ |
| 61 | |
| 62 | unsigned long flash_init (void) |
| 63 | { |
| 64 | unsigned long size_b0; |
| 65 | int i; |
| 66 | |
| 67 | /* Init: no FLASHes known */ |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 68 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 69 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 70 | } |
| 71 | |
| 72 | /* Static FLASH Bank configuration here - FIXME XXX */ |
| 73 | #if 1 |
| 74 | debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM); |
| 75 | #endif |
| 76 | size_b0 = flash_get_size((vu_short *)FLASH_BASE0_PRELIM, &flash_info[0]); |
| 77 | |
| 78 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 79 | printf ("## Unknown FLASH on Bank 0: " |
| 80 | "ID 0x%lx, Size = 0x%08lx = %ld MB\n", |
| 81 | flash_info[0].flash_id, |
| 82 | size_b0, size_b0<<20); |
| 83 | } |
| 84 | |
| 85 | flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]); |
| 86 | |
| 87 | flash_info[0].size = size_b0; |
| 88 | |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 89 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 90 | /* monitor protection ON by default */ |
| 91 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 92 | CONFIG_SYS_MONITOR_BASE, |
| 93 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 94 | &flash_info[0]); |
| 95 | #endif |
| 96 | |
Jean-Christophe PLAGNIOL-VILLARD | 5a1aceb | 2008-09-10 22:48:04 +0200 | [diff] [blame] | 97 | #ifdef CONFIG_ENV_IS_IN_FLASH |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 98 | /* ENV protection ON by default */ |
| 99 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 0e8d158 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 100 | CONFIG_ENV_ADDR, |
| 101 | CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 102 | &flash_info[0]); |
| 103 | #endif |
| 104 | |
| 105 | return size_b0; |
| 106 | } |
| 107 | |
| 108 | /* |
| 109 | * Compute start adress of each sector (block) |
| 110 | */ |
| 111 | |
| 112 | static void flash_get_offsets (ulong base, flash_info_t *info) |
| 113 | { |
| 114 | int i; |
| 115 | |
| 116 | if (info->flash_id == FLASH_UNKNOWN) { |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | switch (info->flash_id & FLASH_VENDMASK) { |
| 121 | case FLASH_MAN_INTEL: |
| 122 | for (i = 0; i < info->sector_count; i++) { |
| 123 | info->start[i] = base + i * FLASH_BLOCK_SIZE; |
| 124 | } |
| 125 | return; |
| 126 | |
| 127 | default: |
| 128 | printf ("Don't know sector offsets for flash type 0x%lx\n", |
| 129 | info->flash_id); |
| 130 | return; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /* |
| 135 | * Print flash information |
| 136 | */ |
| 137 | void flash_print_info (flash_info_t *info) |
| 138 | { |
| 139 | int i; |
| 140 | |
| 141 | if (info->flash_id == FLASH_UNKNOWN) { |
| 142 | printf ("missing or unknown FLASH type\n"); |
| 143 | return; |
| 144 | } |
| 145 | |
| 146 | switch (info->flash_id & FLASH_VENDMASK) { |
| 147 | case FLASH_MAN_AMD: printf ("AMD "); break; |
| 148 | case FLASH_MAN_FUJ: printf ("Fujitsu "); break; |
| 149 | case FLASH_MAN_SST: printf ("SST "); break; |
| 150 | case FLASH_MAN_STM: printf ("STM "); break; |
| 151 | case FLASH_MAN_INTEL: printf ("Intel "); break; |
| 152 | case FLASH_MAN_MT: printf ("MT "); break; |
| 153 | default: printf ("Unknown Vendor "); break; |
| 154 | } |
| 155 | |
| 156 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 157 | case FLASH_28F320J3A: printf ("28F320J3A (32Mbit) 16-Bit\n"); |
| 158 | break; |
| 159 | case FLASH_28F640J3A: printf ("28F640J3A (64Mbit) 16-Bit\n"); |
| 160 | break; |
| 161 | case FLASH_28F128J3A: printf ("28F128J3A (128Mbit) 16-Bit\n"); |
| 162 | break; |
| 163 | default: printf ("Unknown Chip Type\n"); |
| 164 | break; |
| 165 | } |
| 166 | |
| 167 | if (info->size >= (1 << 20)) { |
| 168 | i = 20; |
| 169 | } else { |
| 170 | i = 10; |
| 171 | } |
| 172 | printf (" Size: %ld %cB in %d Sectors\n", |
| 173 | info->size >> i, |
| 174 | (i == 20) ? 'M' : 'k', |
| 175 | info->sector_count); |
| 176 | |
| 177 | printf (" Sector Start Addresses:"); |
| 178 | for (i=0; i<info->sector_count; ++i) { |
| 179 | if ((i % 5) == 0) |
| 180 | printf ("\n "); |
| 181 | printf (" %08lX%s", |
| 182 | info->start[i], |
| 183 | info->protect[i] ? " (RO)" : " " |
| 184 | ); |
| 185 | } |
| 186 | printf ("\n"); |
| 187 | return; |
| 188 | } |
| 189 | |
| 190 | /* |
| 191 | * Get size of flash in bytes. |
| 192 | * The following code cannot be run from FLASH! |
| 193 | */ |
| 194 | |
| 195 | static ulong flash_get_size (vu_short *addr, flash_info_t *info) |
| 196 | { |
| 197 | vu_short value; |
| 198 | |
| 199 | /* Read Manufacturer ID */ |
| 200 | addr[0] = FLASH_CMD_READ_ID; |
| 201 | value = addr[0]; |
| 202 | |
| 203 | switch (value) { |
| 204 | case (AMD_MANUFACT & FLASH_ID_MASK): |
| 205 | info->flash_id = FLASH_MAN_AMD; |
| 206 | break; |
| 207 | case (FUJ_MANUFACT & FLASH_ID_MASK): |
| 208 | info->flash_id = FLASH_MAN_FUJ; |
| 209 | break; |
| 210 | case (SST_MANUFACT & FLASH_ID_MASK): |
| 211 | info->flash_id = FLASH_MAN_SST; |
| 212 | break; |
| 213 | case (STM_MANUFACT & FLASH_ID_MASK): |
| 214 | info->flash_id = FLASH_MAN_STM; |
| 215 | break; |
| 216 | case (INTEL_MANUFACT & FLASH_ID_MASK): |
| 217 | info->flash_id = FLASH_MAN_INTEL; |
| 218 | break; |
| 219 | default: |
| 220 | info->flash_id = FLASH_UNKNOWN; |
| 221 | info->sector_count = 0; |
| 222 | info->size = 0; |
| 223 | addr[0] = FLASH_CMD_RESET; /* restore read mode */ |
| 224 | return (0); /* no or unknown flash */ |
| 225 | } |
| 226 | |
| 227 | value = addr[1]; /* device ID */ |
| 228 | |
| 229 | switch (value) { |
| 230 | case (INTEL_ID_28F320J3A & FLASH_ID_MASK): |
| 231 | info->flash_id += FLASH_28F320J3A; |
| 232 | info->sector_count = 32; |
| 233 | info->size = 0x00400000; |
| 234 | break; /* => 32 MBit */ |
| 235 | |
| 236 | case (INTEL_ID_28F640J3A & FLASH_ID_MASK): |
| 237 | info->flash_id += FLASH_28F640J3A; |
| 238 | info->sector_count = 64; |
| 239 | info->size = 0x00800000; |
| 240 | break; /* => 64 MBit */ |
| 241 | |
| 242 | case (INTEL_ID_28F128J3A & FLASH_ID_MASK): |
| 243 | info->flash_id += FLASH_28F128J3A; |
| 244 | info->sector_count = 128; |
| 245 | info->size = 0x01000000; |
| 246 | break; /* => 128 MBit */ |
| 247 | |
| 248 | default: |
| 249 | info->flash_id = FLASH_UNKNOWN; |
| 250 | addr[0] = FLASH_CMD_RESET; /* restore read mode */ |
| 251 | return (0); /* => no or unknown flash */ |
| 252 | |
| 253 | } |
| 254 | |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 255 | if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 256 | printf ("** ERROR: sector count %d > max (%d) **\n", |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 257 | info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); |
| 258 | info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | addr[0] = FLASH_CMD_RESET; /* restore read mode */ |
| 262 | |
| 263 | return (info->size); |
| 264 | } |
| 265 | |
| 266 | |
| 267 | /* |
| 268 | * Erase unprotected sectors |
| 269 | */ |
| 270 | |
| 271 | int flash_erase (flash_info_t *info, int s_first, int s_last) |
| 272 | { |
| 273 | int flag, prot, sect; |
| 274 | ulong start, now, last; |
| 275 | |
| 276 | if ((s_first < 0) || (s_first > s_last)) { |
| 277 | if (info->flash_id == FLASH_UNKNOWN) { |
| 278 | printf ("- missing\n"); |
| 279 | } else { |
| 280 | printf ("- no sectors to erase\n"); |
| 281 | } |
| 282 | return 1; |
| 283 | } |
| 284 | |
| 285 | if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) { |
| 286 | printf ("Can erase only Intel flash types - aborted\n"); |
| 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 | start = get_timer (0); |
| 305 | last = start; |
| 306 | |
| 307 | /* Start erase on unprotected sectors */ |
| 308 | for (sect = s_first; sect<=s_last; sect++) { |
| 309 | if (info->protect[sect] == 0) { /* not protected */ |
| 310 | vu_short *addr = (vu_short *)(info->start[sect]); |
| 311 | unsigned long status; |
| 312 | |
| 313 | /* Disable interrupts which might cause a timeout here */ |
| 314 | flag = disable_interrupts(); |
| 315 | |
| 316 | #ifdef DEBUG |
| 317 | printf("Erase sector %d at start addr 0x%08X", sect, (unsigned int)info->start[sect]); |
| 318 | #endif |
| 319 | |
| 320 | *addr = FLASH_CMD_CLEAR_STATUS; |
| 321 | *addr = FLASH_CMD_BLOCK_ERASE; |
| 322 | *addr = FLASH_CMD_ERASE_CONFIRM; |
| 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 | while (((status = *addr) & FLASH_STATUS_DONE) != FLASH_STATUS_DONE) { |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 332 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 333 | printf("Flash erase timeout at address %lx\n", info->start[sect]); |
| 334 | *addr = FLASH_CMD_SUSPEND_ERASE; |
| 335 | *addr = FLASH_CMD_RESET; |
| 336 | return 1; |
| 337 | } |
| 338 | |
| 339 | /* show that we're waiting */ |
| 340 | if ((now - last) > 1000) { /* every second */ |
| 341 | putc ('.'); |
| 342 | last = now; |
| 343 | } |
| 344 | } |
| 345 | *addr = FLASH_CMD_RESET; |
| 346 | } |
| 347 | } |
| 348 | printf (" done\n"); |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | /* |
| 353 | * Copy memory to flash, returns: |
| 354 | * 0 - OK |
| 355 | * 1 - write timeout |
| 356 | * 2 - Flash not erased |
| 357 | * 4 - Flash not identified |
| 358 | */ |
| 359 | |
| 360 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 361 | { |
| 362 | ulong cp, wp; |
| 363 | ushort data; |
| 364 | int i, rc; |
| 365 | |
| 366 | if (info->flash_id == FLASH_UNKNOWN) { |
| 367 | return 4; |
| 368 | } |
| 369 | |
| 370 | wp = (addr & ~1); /* get lower word aligned address */ |
| 371 | |
| 372 | /* |
| 373 | * handle unaligned start byte |
| 374 | */ |
| 375 | |
| 376 | if (addr - wp) { |
| 377 | data = 0; |
| 378 | data = (data << 8) | *src++; |
| 379 | --cnt; |
| 380 | if ((rc = write_short(info, wp, data)) != 0) { |
| 381 | return (rc); |
| 382 | } |
| 383 | wp += 2; |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * handle word aligned part |
| 388 | */ |
| 389 | |
| 390 | while (cnt >= 2) { |
| 391 | data = 0; |
| 392 | for (i=0; i<2; ++i) { |
| 393 | data = (data << 8) | *src++; |
| 394 | } |
| 395 | |
| 396 | if ((rc = write_short(info, wp, data)) != 0) { |
| 397 | return (rc); |
| 398 | } |
| 399 | wp += 2; |
| 400 | cnt -= 2; |
| 401 | } |
| 402 | |
| 403 | if (cnt == 0) { |
| 404 | return (0); |
| 405 | } |
| 406 | |
| 407 | /* |
| 408 | * handle unaligned tail bytes |
| 409 | */ |
| 410 | |
| 411 | data = 0; |
| 412 | for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) { |
| 413 | data = (data << 8) | *src++; |
| 414 | --cnt; |
| 415 | } |
| 416 | for (; i<2; ++i, ++cp) { |
| 417 | data = (data << 8) | (*(uchar *)cp); |
| 418 | } |
| 419 | |
| 420 | return (write_short(info, wp, data)); |
| 421 | |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * Write 16 bit (short) to flash |
| 426 | */ |
| 427 | |
| 428 | static int write_short (flash_info_t *info, ulong dest, ushort data) |
| 429 | { |
| 430 | vu_short *addr = (vu_short*)(info->start[0]); |
| 431 | ulong start; |
| 432 | int flag; |
| 433 | |
| 434 | /* Check if Flash is (sufficiently) erased */ |
| 435 | if ((*((vu_short *)dest) & data) != data) { |
| 436 | return (2); |
| 437 | } |
| 438 | |
| 439 | /* Disable interrupts which might cause a timeout here */ |
| 440 | flag = disable_interrupts(); |
| 441 | |
| 442 | if (!(info->flash_id & FLASH_VENDMASK)) { |
| 443 | return 4; |
| 444 | } |
wdenk | 8bde7f7 | 2003-06-27 21:31:46 +0000 | [diff] [blame] | 445 | *addr = FLASH_CMD_ERASE_CONFIRM; |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 446 | *addr = FLASH_CMD_WRITE; |
| 447 | |
| 448 | *((vu_short *)dest) = data; |
| 449 | |
| 450 | /* re-enable interrupts if necessary */ |
| 451 | if (flag) { |
| 452 | enable_interrupts(); |
| 453 | } |
| 454 | |
| 455 | /* data polling for D7 */ |
| 456 | start = get_timer (0); |
| 457 | |
| 458 | /* wait for error or finish */ |
| 459 | while(!(addr[0] & FLASH_STATUS_DONE)){ |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 460 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | 8bde7f7 | 2003-06-27 21:31:46 +0000 | [diff] [blame] | 461 | addr[0] = FLASH_CMD_RESET; |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 462 | return (1); |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | *addr = FLASH_CMD_RESET; |
| 467 | return (0); |
| 468 | } |
| 469 | |
| 470 | /* |
| 471 | * Protects a flash sector |
| 472 | */ |
| 473 | |
| 474 | int flash_real_protect(flash_info_t *info, long sector, int prot) |
| 475 | { |
| 476 | vu_short *addr = (vu_short*)(info->start[sector]); |
| 477 | ulong start; |
| 478 | |
| 479 | *addr = FLASH_CMD_CLEAR_STATUS; |
| 480 | *addr = FLASH_CMD_PROTECT; |
| 481 | |
| 482 | if(prot) { |
| 483 | *addr = FLASH_CMD_PROTECT_SET; |
| 484 | } else { |
| 485 | *addr = FLASH_CMD_PROTECT_CLEAR; |
| 486 | } |
| 487 | |
| 488 | /* wait for error or finish */ |
| 489 | start = get_timer (0); |
| 490 | while(!(addr[0] & FLASH_STATUS_DONE)){ |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 491 | if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | 8bde7f7 | 2003-06-27 21:31:46 +0000 | [diff] [blame] | 492 | printf("Flash protect timeout at address %lx\n", info->start[sector]); |
wdenk | 0db5bca | 2003-03-31 17:27:09 +0000 | [diff] [blame] | 493 | addr[0] = FLASH_CMD_RESET; |
| 494 | return (1); |
| 495 | } |
| 496 | } |
| 497 | /* Set software protect flag */ |
| 498 | info->protect[sector] = prot; |
| 499 | *addr = FLASH_CMD_RESET; |
| 500 | return (0); |
| 501 | } |