wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 1 | /* |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 2 | * (C) Copyright 2000-2004 |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 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 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 24 | /* #define DEBUG */ |
| 25 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 26 | #include <common.h> |
| 27 | #include <mpc8xx.h> |
| 28 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 29 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 30 | |
| 31 | /*----------------------------------------------------------------------- |
| 32 | * Functions |
| 33 | */ |
| 34 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| 35 | static int write_word (flash_info_t *info, ulong dest, ulong data); |
| 36 | static void flash_get_offsets (ulong base, flash_info_t *info); |
| 37 | |
| 38 | /*----------------------------------------------------------------------- |
| 39 | */ |
| 40 | |
| 41 | unsigned long flash_init (void) |
| 42 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 43 | volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 44 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
| 45 | unsigned long size_b0 ; |
| 46 | int i; |
| 47 | |
| 48 | /* Init: no FLASHes known */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 49 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 50 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 51 | } |
| 52 | |
| 53 | /* Static FLASH Bank configuration here - FIXME XXX */ |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 54 | |
| 55 | debug ("\n## Get flash bank size @ 0x%08x\n", FLASH_BASE_PRELIM); |
| 56 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 57 | size_b0 = flash_get_size((vu_long *)FLASH_BASE_PRELIM, &flash_info[0]); |
| 58 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 59 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 60 | size_b0, size_b0<<20); |
| 61 | } |
| 62 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 63 | debug ("## Before remap: BR0: 0x%08x OR0: 0x%08x\n", |
| 64 | memctl->memc_br0, memctl->memc_or0); |
| 65 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 66 | /* Remap FLASH according to real size */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 67 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); |
| 68 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 69 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 70 | debug ("## BR0: 0x%08x OR0: 0x%08x\n", |
| 71 | memctl->memc_br0, memctl->memc_or0); |
| 72 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 73 | /* Re-do sizing to get full correct info */ |
| 74 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 75 | size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
| 76 | flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 77 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 78 | /* monitor protection ON by default */ |
| 79 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 80 | CONFIG_SYS_MONITOR_BASE, |
| 81 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 82 | &flash_info[0]); |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 83 | |
Jean-Christophe PLAGNIOL-VILLARD | 53db4cd | 2008-09-10 22:48:04 +0200 | [diff] [blame] | 84 | #ifdef CONFIG_ENV_IS_IN_FLASH |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 85 | /* ENV protection ON by default */ |
| 86 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 87 | CONFIG_ENV_ADDR, |
Wolfgang Denk | 4791383 | 2009-05-15 00:16:03 +0200 | [diff] [blame] | 88 | CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 89 | &flash_info[0]); |
| 90 | #endif |
| 91 | |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 92 | #if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 93 | debug ("Protect redundand environment: %08lx ... %08lx\n", |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 94 | (ulong)CONFIG_ENV_ADDR_REDUND, |
Wolfgang Denk | 4791383 | 2009-05-15 00:16:03 +0200 | [diff] [blame] | 95 | (ulong)CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1); |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 96 | |
| 97 | flash_protect(FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 98 | CONFIG_ENV_ADDR_REDUND, |
Wolfgang Denk | 4791383 | 2009-05-15 00:16:03 +0200 | [diff] [blame] | 99 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 100 | &flash_info[0]); |
| 101 | #endif |
| 102 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 103 | flash_info[0].size = size_b0; |
| 104 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 105 | debug ("## Final Flash bank size: %08lx\n", size_b0); |
| 106 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 107 | return (size_b0); |
| 108 | } |
| 109 | |
| 110 | /*----------------------------------------------------------------------- |
| 111 | */ |
| 112 | static void flash_get_offsets (ulong base, flash_info_t *info) |
| 113 | { |
| 114 | int i; |
| 115 | |
| 116 | /* set up sector start address table */ |
| 117 | if (info->flash_id & FLASH_BTYPE) { |
| 118 | /* set sector offsets for bottom boot block type */ |
| 119 | info->start[0] = base + 0x00000000; |
| 120 | info->start[1] = base + 0x00010000; |
| 121 | info->start[2] = base + 0x00018000; |
| 122 | info->start[3] = base + 0x00020000; |
| 123 | for (i = 4; i < info->sector_count; i++) { |
| 124 | info->start[i] = base + ((i-3) * 0x00040000) ; |
| 125 | } |
| 126 | } else { |
| 127 | /* set sector offsets for top boot block type */ |
| 128 | i = info->sector_count - 1; |
| 129 | info->start[i--] = base + info->size - 0x00010000; |
| 130 | info->start[i--] = base + info->size - 0x00018000; |
| 131 | info->start[i--] = base + info->size - 0x00020000; |
| 132 | for (; i >= 0; i--) { |
| 133 | info->start[i] = base + i * 0x00040000; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | } |
| 138 | |
| 139 | /*----------------------------------------------------------------------- |
| 140 | */ |
| 141 | void flash_print_info (flash_info_t *info) |
| 142 | { |
| 143 | int i; |
| 144 | |
| 145 | if (info->flash_id == FLASH_UNKNOWN) { |
| 146 | printf ("missing or unknown FLASH type\n"); |
| 147 | return; |
| 148 | } |
| 149 | |
| 150 | switch (info->flash_id & FLASH_VENDMASK) { |
| 151 | case FLASH_MAN_AMD: printf ("AMD "); break; |
| 152 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; |
| 153 | default: printf ("Unknown Vendor "); break; |
| 154 | } |
| 155 | |
| 156 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 157 | case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); |
| 158 | break; |
| 159 | case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); |
| 160 | break; |
| 161 | case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); |
| 162 | break; |
| 163 | case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); |
| 164 | break; |
| 165 | case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); |
| 166 | break; |
| 167 | case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); |
| 168 | break; |
| 169 | case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); |
| 170 | break; |
| 171 | case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); |
| 172 | break; |
| 173 | default: printf ("Unknown Chip Type\n"); |
| 174 | break; |
| 175 | } |
| 176 | |
| 177 | printf (" Size: %ld MB in %d Sectors\n", |
| 178 | info->size >> 20, info->sector_count); |
| 179 | |
| 180 | printf (" Sector Start Addresses:"); |
| 181 | for (i=0; i<info->sector_count; ++i) { |
| 182 | if ((i % 5) == 0) |
| 183 | printf ("\n "); |
| 184 | printf (" %08lX%s", |
| 185 | info->start[i], |
| 186 | info->protect[i] ? " (RO)" : " " |
| 187 | ); |
| 188 | } |
| 189 | printf ("\n"); |
| 190 | return; |
| 191 | } |
| 192 | |
| 193 | /*----------------------------------------------------------------------- |
| 194 | */ |
| 195 | |
| 196 | |
| 197 | /*----------------------------------------------------------------------- |
| 198 | */ |
| 199 | |
| 200 | /* |
| 201 | * The following code cannot be run from FLASH! |
| 202 | */ |
| 203 | |
| 204 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| 205 | { |
| 206 | short i; |
| 207 | ulong value; |
| 208 | ulong base = (ulong)addr; |
| 209 | |
| 210 | /* Write auto select command: read Manufacturer ID */ |
| 211 | addr[0xAAA] = 0xAAAAAAAA ; |
| 212 | addr[0x555] = 0x55555555 ; |
| 213 | addr[0xAAA] = 0x90909090 ; |
| 214 | |
| 215 | value = addr[0] ; |
| 216 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 217 | debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value); |
| 218 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 219 | switch (value & 0x00FF00FF) { |
| 220 | case AMD_MANUFACT: |
| 221 | info->flash_id = FLASH_MAN_AMD; |
| 222 | break; |
| 223 | case FUJ_MANUFACT: |
| 224 | info->flash_id = FLASH_MAN_FUJ; |
| 225 | break; |
| 226 | default: |
| 227 | info->flash_id = FLASH_UNKNOWN; |
| 228 | info->sector_count = 0; |
| 229 | info->size = 0; |
| 230 | return (0); /* no or unknown flash */ |
| 231 | } |
| 232 | |
| 233 | value = addr[2] ; /* device ID */ |
| 234 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 235 | debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value); |
| 236 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 237 | switch (value & 0x00FF00FF) { |
| 238 | case (AMD_ID_LV400T & 0x00FF00FF): |
| 239 | info->flash_id += FLASH_AM400T; |
| 240 | info->sector_count = 11; |
| 241 | info->size = 0x00100000; |
| 242 | break; /* => 1 MB */ |
| 243 | |
| 244 | case (AMD_ID_LV400B & 0x00FF00FF): |
| 245 | info->flash_id += FLASH_AM400B; |
| 246 | info->sector_count = 11; |
| 247 | info->size = 0x00100000; |
| 248 | break; /* => 1 MB */ |
| 249 | |
| 250 | case (AMD_ID_LV800T & 0x00FF00FF): |
| 251 | info->flash_id += FLASH_AM800T; |
| 252 | info->sector_count = 19; |
| 253 | info->size = 0x00200000; |
| 254 | break; /* => 2 MB */ |
| 255 | |
| 256 | case (AMD_ID_LV800B & 0x00FF00FF): |
| 257 | info->flash_id += FLASH_AM800B; |
| 258 | info->sector_count = 19; |
| 259 | info->size = 0x00400000; /*%%% Size doubled by yooth */ |
| 260 | break; /* => 4 MB */ |
| 261 | |
| 262 | case (AMD_ID_LV160T & 0x00FF00FF): |
| 263 | info->flash_id += FLASH_AM160T; |
| 264 | info->sector_count = 35; |
| 265 | info->size = 0x00400000; |
| 266 | break; /* => 4 MB */ |
| 267 | |
| 268 | case (AMD_ID_LV160B & 0x00FF00FF): |
| 269 | info->flash_id += FLASH_AM160B; |
| 270 | info->sector_count = 35; |
| 271 | info->size = 0x00800000; |
| 272 | break; /* => 8 MB */ |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 273 | case (AMD_ID_LV320T & 0x00FF00FF): |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 274 | info->flash_id += FLASH_AM320T; |
| 275 | info->sector_count = 67; |
| 276 | info->size = 0x00800000; |
| 277 | break; /* => 8 MB */ |
| 278 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 279 | case (AMD_ID_LV320B & 0x00FF00FF): |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 280 | info->flash_id += FLASH_AM320B; |
| 281 | info->sector_count = 67; |
| 282 | info->size = 0x01000000; |
| 283 | break; /* => 16 MB */ |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 284 | default: |
| 285 | info->flash_id = FLASH_UNKNOWN; |
| 286 | return (0); /* => no or unknown flash */ |
| 287 | |
| 288 | } |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 289 | /* set up sector start address table */ |
| 290 | if (info->flash_id & FLASH_BTYPE) { |
| 291 | /* set sector offsets for bottom boot block type */ |
| 292 | info->start[0] = base + 0x00000000; |
| 293 | info->start[1] = base + 0x00010000; |
| 294 | info->start[2] = base + 0x00018000; |
| 295 | info->start[3] = base + 0x00020000; |
| 296 | for (i = 4; i < info->sector_count; i++) { |
| 297 | info->start[i] = base + ((i-3) * 0x00040000) ; |
| 298 | } |
| 299 | } else { |
| 300 | /* set sector offsets for top boot block type */ |
| 301 | i = info->sector_count - 1; |
| 302 | info->start[i--] = base + info->size - 0x00010000; |
| 303 | info->start[i--] = base + info->size - 0x00018000; |
| 304 | info->start[i--] = base + info->size - 0x00020000; |
| 305 | for (; i >= 0; i--) { |
| 306 | info->start[i] = base + i * 0x00040000; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | /* check for protected sectors */ |
| 311 | for (i = 0; i < info->sector_count; i++) { |
| 312 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
| 313 | /* D0 = 1 if protected */ |
| 314 | addr = (volatile unsigned long *)(info->start[i]); |
| 315 | info->protect[i] = addr[4] & 1 ; |
| 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Prevent writes to uninitialized FLASH. |
| 320 | */ |
| 321 | if (info->flash_id != FLASH_UNKNOWN) { |
| 322 | addr = (volatile unsigned long *)info->start[0]; |
| 323 | |
| 324 | *addr = 0xF0F0F0F0; /* reset bank */ |
| 325 | } |
| 326 | |
| 327 | return (info->size); |
| 328 | } |
| 329 | |
| 330 | |
| 331 | /*----------------------------------------------------------------------- |
| 332 | */ |
| 333 | |
| 334 | int flash_erase (flash_info_t *info, int s_first, int s_last) |
| 335 | { |
| 336 | vu_long *addr = (vu_long*)(info->start[0]); |
| 337 | int flag, prot, sect, l_sect; |
| 338 | ulong start, now, last; |
| 339 | |
wdenk | a09491a | 2004-04-08 22:31:29 +0000 | [diff] [blame] | 340 | debug ("flash_erase: first: %d last: %d\n", s_first, s_last); |
| 341 | |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 342 | if ((s_first < 0) || (s_first > s_last)) { |
| 343 | if (info->flash_id == FLASH_UNKNOWN) { |
| 344 | printf ("- missing\n"); |
| 345 | } else { |
| 346 | printf ("- no sectors to erase\n"); |
| 347 | } |
| 348 | return 1; |
| 349 | } |
| 350 | |
| 351 | if ((info->flash_id == FLASH_UNKNOWN) || |
| 352 | (info->flash_id > FLASH_AMD_COMP)) { |
| 353 | printf ("Can't erase unknown flash type %08lx - aborted\n", |
| 354 | info->flash_id); |
| 355 | return 1; |
| 356 | } |
| 357 | |
| 358 | prot = 0; |
| 359 | for (sect=s_first; sect<=s_last; ++sect) { |
| 360 | if (info->protect[sect]) { |
| 361 | prot++; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | if (prot) { |
| 366 | printf ("- Warning: %d protected sectors will not be erased!\n", |
| 367 | prot); |
| 368 | } else { |
| 369 | printf ("\n"); |
| 370 | } |
| 371 | |
| 372 | l_sect = -1; |
| 373 | |
| 374 | /* Disable interrupts which might cause a timeout here */ |
| 375 | flag = disable_interrupts(); |
| 376 | |
| 377 | addr[0xAAA] = 0xAAAAAAAA; |
| 378 | addr[0x555] = 0x55555555; |
| 379 | addr[0xAAA] = 0x80808080; |
| 380 | addr[0xAAA] = 0xAAAAAAAA; |
| 381 | addr[0x555] = 0x55555555; |
| 382 | |
| 383 | /* Start erase on unprotected sectors */ |
| 384 | for (sect = s_first; sect<=s_last; sect++) { |
| 385 | if (info->protect[sect] == 0) { /* not protected */ |
| 386 | addr = (vu_long *)(info->start[sect]) ; |
| 387 | addr[0] = 0x30303030 ; |
| 388 | l_sect = sect; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | /* re-enable interrupts if necessary */ |
| 393 | if (flag) |
| 394 | enable_interrupts(); |
| 395 | |
| 396 | /* wait at least 80us - let's wait 1 ms */ |
| 397 | udelay (1000); |
| 398 | |
| 399 | /* |
| 400 | * We wait for the last triggered sector |
| 401 | */ |
| 402 | if (l_sect < 0) |
| 403 | goto DONE; |
| 404 | |
| 405 | start = get_timer (0); |
| 406 | last = start; |
| 407 | addr = (vu_long *)(info->start[l_sect]); |
| 408 | while ((addr[0] & 0x80808080) != 0x80808080) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 409 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 410 | printf ("Timeout\n"); |
| 411 | return 1; |
| 412 | } |
| 413 | /* show that we're waiting */ |
| 414 | if ((now - last) > 1000) { /* every second */ |
| 415 | putc ('.'); |
| 416 | last = now; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | DONE: |
| 421 | /* reset to read mode */ |
| 422 | addr = (vu_long *)info->start[0]; |
| 423 | addr[0] = 0xF0F0F0F0; /* reset bank */ |
| 424 | |
| 425 | printf (" done\n"); |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /*----------------------------------------------------------------------- |
| 430 | * Copy memory to flash, returns: |
| 431 | * 0 - OK |
| 432 | * 1 - write timeout |
| 433 | * 2 - Flash not erased |
| 434 | */ |
| 435 | |
| 436 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| 437 | { |
| 438 | ulong cp, wp, data; |
| 439 | int i, l, rc; |
| 440 | |
| 441 | wp = (addr & ~3); /* get lower word aligned address */ |
| 442 | |
| 443 | /* |
| 444 | * handle unaligned start bytes |
| 445 | */ |
| 446 | if ((l = addr - wp) != 0) { |
| 447 | data = 0; |
| 448 | for (i=0, cp=wp; i<l; ++i, ++cp) { |
| 449 | data = (data << 8) | (*(uchar *)cp); |
| 450 | } |
| 451 | for (; i<4 && cnt>0; ++i) { |
| 452 | data = (data << 8) | *src++; |
| 453 | --cnt; |
| 454 | ++cp; |
| 455 | } |
| 456 | for (; cnt==0 && i<4; ++i, ++cp) { |
| 457 | data = (data << 8) | (*(uchar *)cp); |
| 458 | } |
| 459 | |
| 460 | if ((rc = write_word(info, wp, data)) != 0) { |
| 461 | return (rc); |
| 462 | } |
| 463 | wp += 4; |
| 464 | } |
| 465 | |
| 466 | /* |
| 467 | * handle word aligned part |
| 468 | */ |
| 469 | while (cnt >= 4) { |
| 470 | data = 0; |
| 471 | for (i=0; i<4; ++i) { |
| 472 | data = (data << 8) | *src++; |
| 473 | } |
| 474 | if ((rc = write_word(info, wp, data)) != 0) { |
| 475 | return (rc); |
| 476 | } |
| 477 | wp += 4; |
| 478 | cnt -= 4; |
| 479 | } |
| 480 | |
| 481 | if (cnt == 0) { |
| 482 | return (0); |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | * handle unaligned tail bytes |
| 487 | */ |
| 488 | data = 0; |
| 489 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { |
| 490 | data = (data << 8) | *src++; |
| 491 | --cnt; |
| 492 | } |
| 493 | for (; i<4; ++i, ++cp) { |
| 494 | data = (data << 8) | (*(uchar *)cp); |
| 495 | } |
| 496 | |
| 497 | return (write_word(info, wp, data)); |
| 498 | } |
| 499 | |
| 500 | /*----------------------------------------------------------------------- |
| 501 | * Write a word to Flash, returns: |
| 502 | * 0 - OK |
| 503 | * 1 - write timeout |
| 504 | * 2 - Flash not erased |
| 505 | */ |
| 506 | static int write_word (flash_info_t *info, ulong dest, ulong data) |
| 507 | { |
| 508 | vu_long *addr = (vu_long *)(info->start[0]); |
| 509 | ulong start; |
| 510 | int flag; |
| 511 | |
| 512 | /* Check if Flash is (sufficiently) erased */ |
| 513 | if ((*((vu_long *)dest) & data) != data) { |
| 514 | return (2); |
| 515 | } |
| 516 | /* Disable interrupts which might cause a timeout here */ |
| 517 | flag = disable_interrupts(); |
| 518 | |
| 519 | addr[0xAAA] = 0xAAAAAAAA; |
| 520 | addr[0x555] = 0x55555555; |
| 521 | addr[0xAAA] = 0xA0A0A0A0; |
| 522 | |
| 523 | *((vu_long *)dest) = data; |
| 524 | |
| 525 | /* re-enable interrupts if necessary */ |
| 526 | if (flag) |
| 527 | enable_interrupts(); |
| 528 | |
| 529 | /* data polling for D7 */ |
| 530 | start = get_timer (0); |
| 531 | while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 532 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | e6466f6 | 2003-06-05 19:27:42 +0000 | [diff] [blame] | 533 | return (1); |
| 534 | } |
| 535 | } |
| 536 | return (0); |
| 537 | } |
| 538 | |
| 539 | /*----------------------------------------------------------------------- |
| 540 | */ |