wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2003 |
| 3 | * MuLogic B.V. |
| 4 | * |
| 5 | * (C) Copyright 2001 |
| 6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 7 | * |
Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 8 | * SPDX-License-Identifier: GPL-2.0+ |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include <common.h> |
Stefan Roese | 247e9d7 | 2010-09-09 19:18:00 +0200 | [diff] [blame] | 12 | #include <asm/ppc4xx.h> |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 13 | #include <asm/u-boot.h> |
| 14 | #include <asm/processor.h> |
| 15 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 16 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 17 | |
| 18 | |
| 19 | #define FLASH_WORD_SIZE unsigned long |
| 20 | #define FLASH_ID_MASK 0xFFFFFFFF |
| 21 | |
| 22 | /*----------------------------------------------------------------------- |
| 23 | * Functions |
| 24 | */ |
| 25 | /* stolen from esteem192e/flash.c */ |
| 26 | ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info); |
| 27 | |
| 28 | static int write_word (flash_info_t *info, ulong dest, ulong data); |
| 29 | static void flash_get_offsets (ulong base, flash_info_t *info); |
| 30 | |
| 31 | |
| 32 | /*----------------------------------------------------------------------- |
| 33 | */ |
| 34 | |
| 35 | unsigned long flash_init (void) |
| 36 | { |
| 37 | unsigned long size_b0, size_b1; |
| 38 | int i; |
| 39 | uint pbcr; |
| 40 | unsigned long base_b0, base_b1; |
| 41 | volatile FLASH_WORD_SIZE* flash_base; |
| 42 | |
| 43 | /* Init: no FLASHes known */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 44 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 45 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 46 | } |
| 47 | |
| 48 | /* Static FLASH Bank configuration here */ |
| 49 | /* Test for 8M Flash first */ |
| 50 | debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_8M_PRELIM); |
| 51 | flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_8M_PRELIM); |
| 52 | size_b0 = flash_get_size(flash_base, &flash_info[0]); |
| 53 | |
| 54 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 55 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 56 | size_b0, size_b0<<20); |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | if (size_b0 < 8*1024*1024) { |
| 61 | /* Not quite 8M, try 4M Flash base address */ |
| 62 | debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_4M_PRELIM); |
| 63 | flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_4M_PRELIM); |
| 64 | size_b0 = flash_get_size(flash_base, &flash_info[0]); |
| 65 | } |
| 66 | |
| 67 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 68 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 69 | size_b0, size_b0<<20); |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | /* Only one bank */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 74 | if (CONFIG_SYS_MAX_FLASH_BANKS == 1) { |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 75 | /* Setup offsets */ |
| 76 | flash_get_offsets ((ulong)flash_base, &flash_info[0]); |
| 77 | |
| 78 | /* Monitor protection ON by default */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 79 | (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE, |
| 80 | CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1, &flash_info[0]); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 81 | size_b1 = 0 ; |
| 82 | flash_info[0].size = size_b0; |
| 83 | return(size_b0); |
| 84 | } |
| 85 | |
| 86 | /* We have 2 banks */ |
| 87 | size_b1 = flash_get_size(flash_base, &flash_info[1]); |
| 88 | |
| 89 | /* Re-do sizing to get full correct info */ |
| 90 | if (size_b1) { |
Stefan Roese | 918010a | 2009-09-09 16:25:29 +0200 | [diff] [blame] | 91 | mtdcr(EBC0_CFGADDR, PB0CR); |
| 92 | pbcr = mfdcr(EBC0_CFGDATA); |
| 93 | mtdcr(EBC0_CFGADDR, PB0CR); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 94 | base_b1 = -size_b1; |
| 95 | pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17); |
Stefan Roese | 918010a | 2009-09-09 16:25:29 +0200 | [diff] [blame] | 96 | mtdcr(EBC0_CFGDATA, pbcr); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | if (size_b0) { |
Stefan Roese | 918010a | 2009-09-09 16:25:29 +0200 | [diff] [blame] | 100 | mtdcr(EBC0_CFGADDR, PB1CR); |
| 101 | pbcr = mfdcr(EBC0_CFGDATA); |
| 102 | mtdcr(EBC0_CFGADDR, PB1CR); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 103 | base_b0 = base_b1 - size_b0; |
| 104 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17); |
Stefan Roese | 918010a | 2009-09-09 16:25:29 +0200 | [diff] [blame] | 105 | mtdcr(EBC0_CFGDATA, pbcr); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]); |
| 109 | flash_get_offsets (base_b0, &flash_info[0]); |
| 110 | |
| 111 | /* monitor protection ON by default */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 112 | (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE, |
| 113 | CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1, &flash_info[0]); |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 114 | |
| 115 | if (size_b1) { |
| 116 | /* Re-do sizing to get full correct info */ |
| 117 | size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b1, &flash_info[1]); |
| 118 | flash_get_offsets (base_b1, &flash_info[1]); |
| 119 | |
| 120 | /* monitor protection ON by default */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 121 | (void)flash_protect(FLAG_PROTECT_SET, base_b1+size_b1-CONFIG_SYS_MONITOR_LEN, |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 122 | base_b1+size_b1-1, &flash_info[1]); |
| 123 | |
| 124 | /* monitor protection OFF by default (one is enough) */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 125 | (void)flash_protect(FLAG_PROTECT_CLEAR, base_b0+size_b0-CONFIG_SYS_MONITOR_LEN, |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 126 | base_b0+size_b0-1, &flash_info[0]); |
| 127 | } else { |
| 128 | flash_info[1].flash_id = FLASH_UNKNOWN; |
| 129 | flash_info[1].sector_count = -1; |
| 130 | } |
| 131 | |
| 132 | flash_info[0].size = size_b0; |
| 133 | flash_info[1].size = size_b1; |
| 134 | return (size_b0 + size_b1); |
| 135 | } |
| 136 | |
| 137 | |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 138 | /*----------------------------------------------------------------------- |
| 139 | This code is specific to the AM29DL163/AM29DL232 for the QS850/QS823. |
| 140 | */ |
| 141 | |
| 142 | static void flash_get_offsets (ulong base, flash_info_t *info) |
| 143 | { |
| 144 | int i; |
| 145 | long large_sect_size; |
| 146 | long small_sect_size; |
| 147 | |
| 148 | /* set up sector start adress table */ |
| 149 | large_sect_size = info->size / (info->sector_count - 8 + 1); |
| 150 | small_sect_size = large_sect_size / 8; |
| 151 | |
| 152 | if (info->flash_id & FLASH_BTYPE) { |
| 153 | |
| 154 | /* set sector offsets for bottom boot block type */ |
| 155 | for (i = 0; i < 7; i++) { |
| 156 | info->start[i] = base; |
| 157 | base += small_sect_size; |
| 158 | } |
| 159 | |
| 160 | for (; i < info->sector_count; i++) { |
| 161 | info->start[i] = base; |
| 162 | base += large_sect_size; |
| 163 | } |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | /* set sector offsets for top boot block type */ |
| 168 | for (i = 0; i < (info->sector_count - 8); i++) { |
| 169 | info->start[i] = base; |
| 170 | base += large_sect_size; |
| 171 | } |
| 172 | |
| 173 | for (; i < info->sector_count; i++) { |
| 174 | info->start[i] = base; |
| 175 | base += small_sect_size; |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | /*----------------------------------------------------------------------- |
| 181 | */ |
| 182 | |
| 183 | void flash_print_info (flash_info_t *info) |
| 184 | { |
| 185 | int i; |
| 186 | uchar *boottype; |
| 187 | uchar botboot[]=", bottom boot sect)\n"; |
| 188 | uchar topboot[]=", top boot sector)\n"; |
| 189 | |
| 190 | if (info->flash_id == FLASH_UNKNOWN) { |
| 191 | printf ("missing or unknown FLASH type\n"); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | switch (info->flash_id & FLASH_VENDMASK) { |
| 196 | case FLASH_MAN_AMD: |
| 197 | printf ("AMD "); |
| 198 | break; |
| 199 | case FLASH_MAN_FUJ: |
| 200 | printf ("FUJITSU "); |
| 201 | break; |
| 202 | case FLASH_MAN_SST: |
| 203 | printf ("SST "); |
| 204 | break; |
| 205 | case FLASH_MAN_STM: |
| 206 | printf ("STM "); |
| 207 | break; |
| 208 | case FLASH_MAN_INTEL: |
| 209 | printf ("INTEL "); |
| 210 | break; |
| 211 | default: |
| 212 | printf ("Unknown Vendor "); |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | if (info->flash_id & 0x0001 ) { |
| 217 | boottype = botboot; |
| 218 | } else { |
| 219 | boottype = topboot; |
| 220 | } |
| 221 | |
| 222 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 223 | case FLASH_AM160B: |
| 224 | printf ("AM29LV160B (16 Mbit%s",boottype); |
| 225 | break; |
| 226 | case FLASH_AM160T: |
| 227 | printf ("AM29LV160T (16 Mbit%s",boottype); |
| 228 | break; |
| 229 | case FLASH_AMDL163T: |
| 230 | printf ("AM29DL163T (16 Mbit%s",boottype); |
| 231 | break; |
| 232 | case FLASH_AMDL163B: |
| 233 | printf ("AM29DL163B (16 Mbit%s",boottype); |
| 234 | break; |
| 235 | case FLASH_AM320B: |
| 236 | printf ("AM29LV320B (32 Mbit%s",boottype); |
| 237 | break; |
| 238 | case FLASH_AM320T: |
| 239 | printf ("AM29LV320T (32 Mbit%s",boottype); |
| 240 | break; |
| 241 | case FLASH_AMDL323T: |
| 242 | printf ("AM29DL323T (32 Mbit%s",boottype); |
| 243 | break; |
| 244 | case FLASH_AMDL323B: |
| 245 | printf ("AM29DL323B (32 Mbit%s",boottype); |
| 246 | break; |
| 247 | case FLASH_AMDL322T: |
| 248 | printf ("AM29DL322T (32 Mbit%s",boottype); |
| 249 | break; |
| 250 | default: |
| 251 | printf ("Unknown Chip Type\n"); |
| 252 | break; |
| 253 | } |
| 254 | |
| 255 | printf (" Size: %ld MB in %d Sectors\n", |
| 256 | info->size >> 20, info->sector_count); |
| 257 | |
| 258 | printf (" Sector Start Addresses:"); |
| 259 | for (i=0; i<info->sector_count; ++i) { |
| 260 | if ((i % 5) == 0) |
| 261 | printf ("\n "); |
| 262 | printf (" %08lX%s", info->start[i], |
| 263 | info->protect[i] ? " (RO)" : " "); |
| 264 | } |
| 265 | printf ("\n"); |
| 266 | return; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | /*----------------------------------------------------------------------- |
| 271 | * The following code cannot be run from FLASH! |
| 272 | */ |
| 273 | ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info) |
| 274 | { |
| 275 | short i; |
| 276 | ulong base = (ulong)addr; |
| 277 | FLASH_WORD_SIZE value; |
| 278 | |
| 279 | /* Write auto select command: read Manufacturer ID */ |
| 280 | |
| 281 | /* |
| 282 | * Note: if it is an AMD flash and the word at addr[0000] |
| 283 | * is 0x00890089 this routine will think it is an Intel |
| 284 | * flash device and may(most likely) cause trouble. |
| 285 | */ |
| 286 | |
| 287 | addr[0x0000] = 0x00900090; |
| 288 | if(addr[0x0000] != 0x00890089){ |
| 289 | addr[0x0555] = 0x00AA00AA; |
| 290 | addr[0x02AA] = 0x00550055; |
| 291 | addr[0x0555] = 0x00900090; |
| 292 | } |
| 293 | value = addr[0]; |
| 294 | |
| 295 | switch (value) { |
| 296 | case (AMD_MANUFACT & FLASH_ID_MASK): |
| 297 | info->flash_id = FLASH_MAN_AMD; |
| 298 | break; |
| 299 | case (FUJ_MANUFACT & FLASH_ID_MASK): |
| 300 | info->flash_id = FLASH_MAN_FUJ; |
| 301 | break; |
| 302 | case (STM_MANUFACT & FLASH_ID_MASK): |
| 303 | info->flash_id = FLASH_MAN_STM; |
| 304 | break; |
| 305 | case (SST_MANUFACT & FLASH_ID_MASK): |
| 306 | info->flash_id = FLASH_MAN_SST; |
| 307 | break; |
| 308 | case (INTEL_MANUFACT & FLASH_ID_MASK): |
| 309 | info->flash_id = FLASH_MAN_INTEL; |
| 310 | break; |
| 311 | default: |
| 312 | info->flash_id = FLASH_UNKNOWN; |
| 313 | info->sector_count = 0; |
| 314 | info->size = 0; |
| 315 | return (0); /* no or unknown flash */ |
| 316 | } |
| 317 | |
| 318 | value = addr[1]; /* device ID */ |
| 319 | |
| 320 | switch (value) { |
| 321 | case (AMD_ID_LV160T & FLASH_ID_MASK): |
| 322 | info->flash_id += FLASH_AM160T; |
| 323 | info->sector_count = 35; |
| 324 | info->size = 0x00400000; |
| 325 | break; /* => 4 MB */ |
| 326 | |
| 327 | case (AMD_ID_LV160B & FLASH_ID_MASK): |
| 328 | info->flash_id += FLASH_AM160B; |
| 329 | info->sector_count = 35; |
| 330 | info->size = 0x00400000; |
| 331 | break; /* => 4 MB */ |
| 332 | |
| 333 | case (AMD_ID_DL163T & FLASH_ID_MASK): |
| 334 | info->flash_id += FLASH_AMDL163T; |
| 335 | info->sector_count = 39; |
| 336 | info->size = 0x00400000; |
| 337 | break; /* => 4 MB */ |
| 338 | |
| 339 | case (AMD_ID_DL163B & FLASH_ID_MASK): |
| 340 | info->flash_id += FLASH_AMDL163B; |
| 341 | info->sector_count = 39; |
| 342 | info->size = 0x00400000; |
| 343 | break; /* => 4 MB */ |
| 344 | |
| 345 | case (AMD_ID_DL323T & FLASH_ID_MASK): |
| 346 | info->flash_id += FLASH_AMDL323T; |
| 347 | info->sector_count = 71; |
| 348 | info->size = 0x00800000; |
| 349 | break; /* => 8 MB */ |
| 350 | |
| 351 | case (AMD_ID_DL323B & FLASH_ID_MASK): |
| 352 | info->flash_id += FLASH_AMDL323B; |
| 353 | info->sector_count = 71; |
| 354 | info->size = 0x00800000; |
| 355 | break; /* => 8 MB */ |
| 356 | |
| 357 | case (AMD_ID_DL322T & FLASH_ID_MASK): |
| 358 | info->flash_id += FLASH_AMDL322T; |
| 359 | info->sector_count = 71; |
| 360 | info->size = 0x00800000; |
| 361 | break; /* => 8 MB */ |
| 362 | |
| 363 | default: |
| 364 | /* FIXME*/ |
| 365 | info->flash_id = FLASH_UNKNOWN; |
| 366 | return (0); /* => no or unknown flash */ |
| 367 | } |
| 368 | |
| 369 | flash_get_offsets(base, info); |
| 370 | |
| 371 | /* check for protected sectors */ |
| 372 | for (i = 0; i < info->sector_count; i++) { |
| 373 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
| 374 | /* D0 = 1 if protected */ |
| 375 | addr = (volatile FLASH_WORD_SIZE *)(info->start[i]); |
| 376 | info->protect[i] = addr[2] & 1; |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Prevent writes to uninitialized FLASH. |
| 381 | */ |
| 382 | if (info->flash_id != FLASH_UNKNOWN) { |
| 383 | addr = (volatile FLASH_WORD_SIZE *)info->start[0]; |
| 384 | *addr = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */ |
| 385 | } |
| 386 | |
| 387 | return (info->size); |
| 388 | } |
| 389 | |
| 390 | |
| 391 | /*----------------------------------------------------------------------- |
| 392 | */ |
| 393 | |
| 394 | int flash_erase (flash_info_t *info, int s_first, int s_last) |
| 395 | { |
| 396 | volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]); |
| 397 | int flag, prot, sect, l_sect; |
| 398 | ulong start, now, last; |
| 399 | int rcode = 0; |
| 400 | |
| 401 | if ((s_first < 0) || (s_first > s_last)) { |
| 402 | if (info->flash_id == FLASH_UNKNOWN) { |
| 403 | printf ("- missing\n"); |
| 404 | } else { |
| 405 | printf ("- no sectors to erase\n"); |
| 406 | } |
| 407 | return 1; |
| 408 | } |
| 409 | |
| 410 | if ((info->flash_id == FLASH_UNKNOWN) || |
| 411 | (info->flash_id > FLASH_AMD_COMP) ) { |
| 412 | printf ("Can't erase unknown flash type - aborted\n"); |
| 413 | return 1; |
| 414 | } |
| 415 | |
| 416 | prot = 0; |
| 417 | for (sect=s_first; sect<=s_last; ++sect) { |
| 418 | if (info->protect[sect]) { |
| 419 | prot++; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | if (prot) { |
| 424 | printf ("- Warning: %d protected sectors will not be erased!\n", |
| 425 | prot); |
| 426 | } else { |
| 427 | printf ("\n"); |
| 428 | } |
| 429 | |
| 430 | l_sect = -1; |
| 431 | |
| 432 | /* Disable interrupts which might cause a timeout here */ |
| 433 | flag = disable_interrupts(); |
| 434 | addr[0x0555] = 0x00AA00AA; |
| 435 | addr[0x02AA] = 0x00550055; |
| 436 | addr[0x0555] = 0x00800080; |
| 437 | addr[0x0555] = 0x00AA00AA; |
| 438 | addr[0x02AA] = 0x00550055; |
| 439 | /* Start erase on unprotected sectors */ |
| 440 | for (sect = s_first; sect<=s_last; sect++) { |
| 441 | if (info->protect[sect] == 0) { /* not protected */ |
| 442 | addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]); |
| 443 | addr[0] = (0x00300030 & FLASH_ID_MASK); |
| 444 | l_sect = sect; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /* re-enable interrupts if necessary */ |
| 449 | if (flag) |
| 450 | enable_interrupts(); |
| 451 | |
| 452 | /* wait at least 80us - let's wait 1 ms */ |
| 453 | udelay (1000); |
| 454 | |
| 455 | /* |
| 456 | * We wait for the last triggered sector |
| 457 | */ |
| 458 | if (l_sect < 0) |
| 459 | goto DONE; |
| 460 | |
| 461 | start = get_timer (0); |
| 462 | last = start; |
| 463 | addr = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]); |
| 464 | while ((addr[0] & (0x00800080&FLASH_ID_MASK)) != |
| 465 | (0x00800080&FLASH_ID_MASK) ) |
| 466 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 467 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 468 | printf ("Timeout\n"); |
| 469 | return 1; |
| 470 | } |
| 471 | /* show that we're waiting */ |
| 472 | if ((now - last) > 1000) { /* every second */ |
| 473 | serial_putc ('.'); |
| 474 | last = now; |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | DONE: |
| 479 | /* reset to read mode */ |
| 480 | addr = (volatile FLASH_WORD_SIZE *)info->start[0]; |
| 481 | addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */ |
| 482 | |
| 483 | printf (" done\n"); |
| 484 | return rcode; |
| 485 | } |
| 486 | |
| 487 | /*----------------------------------------------------------------------- |
| 488 | * Copy memory to flash, returns: |
| 489 | * 0 - OK |
| 490 | * 1 - write timeout |
| 491 | * 2 - Flash not erased |
| 492 | */ |
| 493 | |
| 494 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 495 | { |
| 496 | ulong cp, wp, data; |
| 497 | int l; |
| 498 | int i, rc; |
| 499 | |
| 500 | wp = (addr & ~3); /* get lower word aligned address */ |
| 501 | |
| 502 | /* |
| 503 | * handle unaligned start bytes |
| 504 | */ |
| 505 | if ((l = addr - wp) != 0) { |
| 506 | data = 0; |
| 507 | for (i=0, cp=wp; i<l; ++i, ++cp) { |
| 508 | data = (data << 8) | (*(uchar *)cp); |
| 509 | } |
| 510 | for (; i<4 && cnt>0; ++i) { |
| 511 | data = (data << 8) | *src++; |
| 512 | --cnt; |
| 513 | ++cp; |
| 514 | } |
| 515 | for (; cnt==0 && i<4; ++i, ++cp) { |
| 516 | data = (data << 8) | (*(uchar *)cp); |
| 517 | } |
| 518 | |
| 519 | if ((rc = write_word(info, wp, data)) != 0) { |
| 520 | return (rc); |
| 521 | } |
| 522 | wp += 4; |
| 523 | } |
| 524 | |
| 525 | /* |
| 526 | * handle word aligned part |
| 527 | */ |
| 528 | while (cnt >= 4) { |
| 529 | data = 0; |
| 530 | for (i=0; i<4; ++i) { |
| 531 | data = (data << 8) | *src++; |
| 532 | } |
| 533 | if ((rc = write_word(info, wp, data)) != 0) { |
| 534 | return (rc); |
| 535 | } |
| 536 | wp += 4; |
| 537 | cnt -= 4; |
| 538 | } |
| 539 | |
| 540 | if (cnt == 0) { |
| 541 | return (0); |
| 542 | } |
| 543 | |
| 544 | /* |
| 545 | * handle unaligned tail bytes |
| 546 | */ |
| 547 | data = 0; |
| 548 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { |
| 549 | data = (data << 8) | *src++; |
| 550 | --cnt; |
| 551 | } |
| 552 | for (; i<4; ++i, ++cp) { |
| 553 | data = (data << 8) | (*(uchar *)cp); |
| 554 | } |
| 555 | |
| 556 | return (write_word(info, wp, data)); |
| 557 | } |
| 558 | |
| 559 | /*----------------------------------------------------------------------- |
| 560 | * Write a word to Flash, returns: |
| 561 | * 0 - OK |
| 562 | * 1 - write timeout |
| 563 | * 2 - Flash not erased |
| 564 | */ |
| 565 | static int write_word (flash_info_t *info, ulong dest, ulong data) |
| 566 | { |
| 567 | vu_long *addr = (vu_long*)(info->start[0]); |
| 568 | ulong start; |
| 569 | int flag; |
| 570 | |
| 571 | /* Check if Flash is (sufficiently) erased */ |
| 572 | if ((*((vu_long *)dest) & data) != data) { |
| 573 | return (2); |
| 574 | } |
| 575 | |
| 576 | /* Disable interrupts which might cause a timeout here */ |
| 577 | flag = disable_interrupts(); |
| 578 | |
| 579 | /* AMD stuff */ |
| 580 | addr[0x0555] = 0x00AA00AA; |
| 581 | addr[0x02AA] = 0x00550055; |
| 582 | addr[0x0555] = 0x00A000A0; |
| 583 | |
| 584 | *((vu_long *)dest) = data; |
| 585 | |
| 586 | /* re-enable interrupts if necessary */ |
| 587 | if (flag) |
| 588 | enable_interrupts(); |
| 589 | |
| 590 | /* data polling for D7 */ |
| 591 | start = get_timer(0); |
| 592 | |
| 593 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 594 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | 174e0e5 | 2003-12-07 22:27:15 +0000 | [diff] [blame] | 595 | return (1); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | return (0); |
| 600 | } |