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affae2bf WD |
1 | /* |
2 | * (C) Copyright 2001 | |
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 | ||
24 | #include <common.h> | |
25 | #include <mpc8xx.h> | |
26 | ||
6d0f6bcf | 27 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
affae2bf | 28 | |
5a1aceb0 | 29 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
0e8d1586 | 30 | # ifndef CONFIG_ENV_ADDR |
6d0f6bcf | 31 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
affae2bf | 32 | # endif |
0e8d1586 JCPV |
33 | # ifndef CONFIG_ENV_SIZE |
34 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE | |
affae2bf | 35 | # endif |
0e8d1586 JCPV |
36 | # ifndef CONFIG_ENV_SECT_SIZE |
37 | # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE | |
affae2bf WD |
38 | # endif |
39 | #endif | |
40 | ||
41 | /*----------------------------------------------------------------------- | |
42 | * Functions | |
43 | */ | |
44 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
45 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
46 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
47 | ||
48 | /*----------------------------------------------------------------------- | |
49 | */ | |
50 | ||
51 | unsigned long flash_init (void) | |
52 | { | |
6d0f6bcf | 53 | volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
affae2bf WD |
54 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
55 | unsigned long size_b0, size_b1; | |
56 | int i; | |
57 | ||
58 | /* Init: no FLASHes known */ | |
6d0f6bcf | 59 | for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
affae2bf WD |
60 | flash_info[i].flash_id = FLASH_UNKNOWN; |
61 | } | |
62 | ||
63 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
64 | ||
65 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
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, | |
70 | size_b0 >> 20); | |
71 | } | |
72 | ||
73 | if (FLASH_BASE1_PRELIM != 0x0) { | |
74 | size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); | |
75 | ||
76 | if (size_b1 > size_b0) { | |
77 | printf ("## ERROR: Bank 1 (0x%08lx = %ld MB)" | |
78 | " > Bank 0 (0x%08lx = %ld MB)\n", | |
79 | size_b1, size_b1 >> 20, | |
80 | size_b0, size_b0 >> 20); | |
81 | ||
82 | flash_info[0].flash_id = FLASH_UNKNOWN; | |
83 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
84 | flash_info[0].sector_count = -1; | |
85 | flash_info[1].sector_count = -1; | |
86 | flash_info[0].size = 0; | |
87 | flash_info[1].size = 0; | |
88 | return (0); | |
89 | } | |
90 | } else { | |
91 | size_b1 = 0; | |
92 | } | |
93 | ||
94 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
95 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK); |
96 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; | |
affae2bf WD |
97 | |
98 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 99 | size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
affae2bf | 100 | |
6d0f6bcf | 101 | flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
affae2bf | 102 | |
6d0f6bcf | 103 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
affae2bf WD |
104 | /* monitor protection ON by default */ |
105 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
106 | CONFIG_SYS_MONITOR_BASE, |
107 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, | |
affae2bf WD |
108 | &flash_info[0]); |
109 | #endif | |
110 | ||
5a1aceb0 | 111 | #ifdef CONFIG_ENV_IS_IN_FLASH |
affae2bf WD |
112 | /* ENV protection ON by default */ |
113 | flash_protect(FLAG_PROTECT_SET, | |
0e8d1586 JCPV |
114 | CONFIG_ENV_ADDR, |
115 | CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1, | |
affae2bf WD |
116 | &flash_info[0]); |
117 | #endif | |
118 | ||
119 | /* ICU862 Board has only one Flash Bank */ | |
120 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
121 | flash_info[1].sector_count = -1; | |
122 | ||
123 | flash_info[0].size = size_b0; | |
124 | flash_info[1].size = size_b1; | |
125 | ||
126 | return (size_b0 + size_b1); | |
127 | ||
128 | } | |
129 | ||
130 | /*----------------------------------------------------------------------- | |
131 | */ | |
132 | static void flash_get_offsets (ulong base, flash_info_t *info) | |
133 | { | |
134 | int i; | |
135 | ||
136 | /* set up sector start address table */ | |
137 | if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) || | |
138 | ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM033C)) { | |
139 | /* set sector offsets for uniform sector type */ | |
140 | for (i = 0; i < info->sector_count; i++) { | |
141 | info->start[i] = base + (i * 0x00040000); | |
142 | } | |
143 | } | |
144 | } | |
145 | ||
146 | /*----------------------------------------------------------------------- | |
147 | */ | |
148 | void flash_print_info (flash_info_t *info) | |
149 | { | |
150 | int i; | |
151 | ||
152 | if (info->flash_id == FLASH_UNKNOWN) { | |
153 | puts ("missing or unknown FLASH type\n"); | |
154 | return; | |
155 | } | |
156 | ||
157 | switch (info->flash_id & FLASH_VENDMASK) { | |
158 | case FLASH_MAN_AMD: puts ("AMD "); break; | |
159 | case FLASH_MAN_FUJ: puts ("FUJITSU "); break; | |
160 | case FLASH_MAN_BM: puts ("BRIGHT MICRO "); break; | |
161 | default: puts ("Unknown Vendor "); break; | |
162 | } | |
163 | ||
164 | switch (info->flash_id & FLASH_TYPEMASK) { | |
165 | case FLASH_AM040: puts ("29F040/29LV040 (4 Mbit, uniform sectors)\n"); | |
166 | break; | |
167 | case FLASH_AM400B: puts ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
168 | break; | |
169 | case FLASH_AM400T: puts ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
170 | break; | |
171 | case FLASH_AM800B: puts ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
172 | break; | |
173 | case FLASH_AM800T: puts ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
174 | break; | |
175 | case FLASH_AM160B: puts ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
176 | break; | |
177 | case FLASH_AM160T: puts ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
178 | break; | |
179 | case FLASH_AM320B: puts ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
180 | break; | |
181 | case FLASH_AM320T: puts ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
182 | break; | |
183 | case FLASH_AM033C: puts ("AM29LV033C (32 Mbit)\n"); | |
184 | break; | |
185 | default: puts ("Unknown Chip Type\n"); | |
186 | break; | |
187 | } | |
188 | ||
189 | printf (" Size: %ld MB in %d Sectors\n", | |
190 | info->size >> 20, info->sector_count); | |
191 | ||
192 | puts (" Sector Start Addresses:"); | |
193 | ||
194 | for (i=0; i<info->sector_count; ++i) { | |
195 | if ((i % 5) == 0) { | |
196 | puts ("\n "); | |
197 | } | |
198 | ||
199 | printf (" %08lX%s", | |
200 | info->start[i], | |
201 | info->protect[i] ? " (RO)" : " " | |
202 | ); | |
203 | } | |
204 | ||
205 | puts ("\n"); | |
206 | } | |
207 | ||
208 | /*----------------------------------------------------------------------- | |
209 | */ | |
210 | ||
211 | /* | |
212 | * The following code cannot be run from FLASH! | |
213 | */ | |
214 | ||
215 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) | |
216 | { | |
217 | short i; | |
218 | #if 0 | |
219 | ulong base = (ulong)addr; | |
220 | #endif | |
221 | uchar value; | |
222 | ||
223 | /* Write auto select command: read Manufacturer ID */ | |
224 | #if 0 | |
225 | addr[0x0555] = 0x00AA00AA; | |
226 | addr[0x02AA] = 0x00550055; | |
227 | addr[0x0555] = 0x00900090; | |
228 | #else | |
229 | addr[0x0555] = 0xAAAAAAAA; | |
230 | addr[0x02AA] = 0x55555555; | |
231 | addr[0x0555] = 0x90909090; | |
232 | #endif | |
233 | ||
234 | value = addr[0]; | |
235 | ||
236 | switch (value + (value << 16)) { | |
237 | case AMD_MANUFACT: | |
238 | info->flash_id = FLASH_MAN_AMD; | |
239 | break; | |
240 | ||
241 | case FUJ_MANUFACT: | |
242 | info->flash_id = FLASH_MAN_FUJ; | |
243 | break; | |
244 | ||
245 | default: | |
246 | info->flash_id = FLASH_UNKNOWN; | |
247 | info->sector_count = 0; | |
248 | info->size = 0; | |
249 | break; | |
250 | } | |
251 | ||
252 | value = addr[1]; /* device ID */ | |
253 | ||
77ddac94 | 254 | switch ((unsigned long)value) { |
affae2bf WD |
255 | case AMD_ID_F040B: |
256 | info->flash_id += FLASH_AM040; | |
257 | info->sector_count = 8; | |
258 | info->size = 0x00200000; | |
259 | break; /* => 2 MB */ | |
260 | ||
261 | case AMD_ID_LV400T: | |
262 | info->flash_id += FLASH_AM400T; | |
263 | info->sector_count = 11; | |
264 | info->size = 0x00100000; | |
265 | break; /* => 1 MB */ | |
266 | ||
267 | case AMD_ID_LV400B: | |
268 | info->flash_id += FLASH_AM400B; | |
269 | info->sector_count = 11; | |
270 | info->size = 0x00100000; | |
271 | break; /* => 1 MB */ | |
272 | ||
273 | case AMD_ID_LV800T: | |
274 | info->flash_id += FLASH_AM800T; | |
275 | info->sector_count = 19; | |
276 | info->size = 0x00200000; | |
277 | break; /* => 2 MB */ | |
278 | ||
279 | case AMD_ID_LV800B: | |
280 | info->flash_id += FLASH_AM800B; | |
281 | info->sector_count = 19; | |
282 | info->size = 0x00200000; | |
283 | break; /* => 2 MB */ | |
284 | ||
285 | case AMD_ID_LV160T: | |
286 | info->flash_id += FLASH_AM160T; | |
287 | info->sector_count = 35; | |
288 | info->size = 0x00400000; | |
289 | break; /* => 4 MB */ | |
290 | ||
291 | case AMD_ID_LV160B: | |
292 | info->flash_id += FLASH_AM160B; | |
293 | info->sector_count = 35; | |
294 | info->size = 0x00400000; | |
295 | break; /* => 4 MB */ | |
296 | #if 0 /* enable when device IDs are available */ | |
297 | case AMD_ID_LV320T: | |
298 | info->flash_id += FLASH_AM320T; | |
299 | info->sector_count = 67; | |
300 | info->size = 0x00800000; | |
301 | break; /* => 8 MB */ | |
302 | ||
303 | case AMD_ID_LV320B: | |
304 | info->flash_id += FLASH_AM320B; | |
305 | info->sector_count = 67; | |
306 | info->size = 0x00800000; | |
307 | break; /* => 8 MB */ | |
308 | #endif | |
309 | case AMD_ID_LV033C: | |
310 | info->flash_id += FLASH_AM033C; | |
311 | info->sector_count = 64; | |
312 | info->size = 0x01000000; | |
313 | break; /* => 16Mb */ | |
314 | default: | |
315 | info->flash_id = FLASH_UNKNOWN; | |
316 | return (0); /* => no or unknown flash */ | |
317 | ||
318 | } | |
319 | ||
320 | #if 0 | |
321 | /* set up sector start address table */ | |
322 | if (info->flash_id & FLASH_BTYPE) { | |
323 | /* set sector offsets for bottom boot block type */ | |
324 | info->start[0] = base + 0x00000000; | |
325 | info->start[1] = base + 0x00008000; | |
326 | info->start[2] = base + 0x0000C000; | |
327 | info->start[3] = base + 0x00010000; | |
328 | for (i = 4; i < info->sector_count; i++) { | |
329 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
330 | } | |
331 | } else { | |
332 | /* set sector offsets for top boot block type */ | |
333 | i = info->sector_count - 1; | |
334 | info->start[i--] = base + info->size - 0x00008000; | |
335 | info->start[i--] = base + info->size - 0x0000C000; | |
336 | info->start[i--] = base + info->size - 0x00010000; | |
337 | for (; i >= 0; i--) { | |
338 | info->start[i] = base + i * 0x00020000; | |
339 | } | |
340 | } | |
341 | #else | |
342 | flash_get_offsets ((ulong)addr, &flash_info[0]); | |
343 | #endif | |
344 | ||
345 | /* check for protected sectors */ | |
346 | for (i = 0; i < info->sector_count; i++) { | |
347 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
348 | /* D0 = 1 if protected */ | |
349 | addr = (volatile unsigned long *)(info->start[i]); | |
350 | #if 1 | |
351 | /* We don't know why it happens, but on ICU Board * | |
352 | * for AMD29033C flash we need to resend the command of * | |
353 | * reading flash protection for upper 8 Mb of flash */ | |
354 | if ( i == 32 ) { | |
355 | addr[0x0555] = 0xAAAAAAAA; | |
356 | addr[0x02AA] = 0x55555555; | |
357 | addr[0x0555] = 0x90909090; | |
358 | } | |
359 | #endif | |
360 | info->protect[i] = addr[2] & 1; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Prevent writes to uninitialized FLASH. | |
365 | */ | |
366 | if (info->flash_id != FLASH_UNKNOWN) { | |
367 | addr = (volatile unsigned long *)info->start[0]; | |
368 | #if 0 | |
369 | *addr = 0x00F000F0; /* reset bank */ | |
370 | #else | |
371 | *addr = 0xF0F0F0F0; /* reset bank */ | |
372 | #endif | |
373 | } | |
374 | ||
375 | return (info->size); | |
376 | } | |
377 | ||
378 | ||
379 | /*----------------------------------------------------------------------- | |
380 | */ | |
381 | ||
382 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
383 | { | |
384 | vu_long *addr = (vu_long*)(info->start[0]); | |
385 | int flag, prot, sect, l_sect; | |
386 | ulong start, now, last; | |
387 | ||
388 | if ((s_first < 0) || (s_first > s_last)) { | |
389 | if (info->flash_id == FLASH_UNKNOWN) { | |
390 | puts ("- missing\n"); | |
391 | } else { | |
392 | puts ("- no sectors to erase\n"); | |
393 | } | |
394 | return 1; | |
395 | } | |
396 | ||
397 | if ((info->flash_id == FLASH_UNKNOWN) || | |
398 | (info->flash_id > FLASH_AMD_COMP)) { | |
399 | puts ("Can't erase unknown flash type - aborted\n"); | |
400 | return 1; | |
401 | } | |
402 | ||
403 | prot = 0; | |
404 | for (sect=s_first; sect<=s_last; ++sect) { | |
405 | if (info->protect[sect]) { | |
406 | prot++; | |
407 | } | |
408 | } | |
409 | ||
410 | if (prot) { | |
411 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
412 | prot); | |
413 | } else { | |
414 | puts ("\n"); | |
415 | } | |
416 | ||
417 | l_sect = -1; | |
418 | ||
419 | /* Disable interrupts which might cause a timeout here */ | |
420 | flag = disable_interrupts(); | |
421 | ||
422 | #if 0 | |
423 | addr[0x0555] = 0x00AA00AA; | |
424 | addr[0x02AA] = 0x00550055; | |
425 | addr[0x0555] = 0x00800080; | |
426 | addr[0x0555] = 0x00AA00AA; | |
427 | addr[0x02AA] = 0x00550055; | |
428 | #else | |
429 | addr[0x0555] = 0xAAAAAAAA; | |
430 | addr[0x02AA] = 0x55555555; | |
431 | addr[0x0555] = 0x80808080; | |
432 | addr[0x0555] = 0xAAAAAAAA; | |
433 | addr[0x02AA] = 0x55555555; | |
434 | #endif | |
435 | ||
436 | /* Start erase on unprotected sectors */ | |
437 | for (sect = s_first; sect<=s_last; sect++) { | |
438 | if (info->protect[sect] == 0) { /* not protected */ | |
439 | addr = (vu_long*)(info->start[sect]); | |
440 | #if 0 | |
441 | addr[0] = 0x00300030; | |
442 | #else | |
443 | addr[0] = 0x30303030; | |
444 | #endif | |
445 | l_sect = sect; | |
446 | } | |
447 | } | |
448 | ||
449 | /* re-enable interrupts if necessary */ | |
450 | if (flag) | |
451 | enable_interrupts(); | |
452 | ||
453 | /* wait at least 80us - let's wait 1 ms */ | |
454 | udelay (1000); | |
455 | ||
456 | /* | |
457 | * We wait for the last triggered sector | |
458 | */ | |
459 | if (l_sect < 0) | |
460 | goto DONE; | |
461 | ||
462 | start = get_timer (0); | |
463 | last = start; | |
464 | addr = (vu_long*)(info->start[l_sect]); | |
465 | #if 0 | |
466 | while ((addr[0] & 0x00800080) != 0x00800080) | |
467 | #else | |
468 | while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF) | |
469 | #endif | |
470 | { | |
6d0f6bcf | 471 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
affae2bf WD |
472 | puts ("Timeout\n"); |
473 | return 1; | |
474 | } | |
475 | /* show that we're waiting */ | |
476 | if ((now - last) > 1000) { /* every second */ | |
477 | putc ('.'); | |
478 | last = now; | |
479 | } | |
480 | } | |
481 | ||
482 | DONE: | |
483 | /* reset to read mode */ | |
484 | addr = (volatile unsigned long *)info->start[0]; | |
485 | #if 0 | |
486 | addr[0] = 0x00F000F0; /* reset bank */ | |
487 | #else | |
488 | addr[0] = 0xF0F0F0F0; /* reset bank */ | |
489 | #endif | |
490 | ||
491 | puts (" done\n"); | |
492 | return 0; | |
493 | } | |
494 | ||
495 | /*----------------------------------------------------------------------- | |
496 | * Copy memory to flash, returns: | |
497 | * 0 - OK | |
498 | * 1 - write timeout | |
499 | * 2 - Flash not erased | |
500 | */ | |
501 | ||
502 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
503 | { | |
504 | ulong cp, wp, data; | |
505 | int i, l, rc; | |
506 | ||
507 | wp = (addr & ~3); /* get lower word aligned address */ | |
508 | ||
509 | /* | |
510 | * handle unaligned start bytes | |
511 | */ | |
512 | if ((l = addr - wp) != 0) { | |
513 | data = 0; | |
514 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
515 | data = (data << 8) | (*(uchar *)cp); | |
516 | } | |
517 | for (; i<4 && cnt>0; ++i) { | |
518 | data = (data << 8) | *src++; | |
519 | --cnt; | |
520 | ++cp; | |
521 | } | |
522 | for (; cnt==0 && i<4; ++i, ++cp) { | |
523 | data = (data << 8) | (*(uchar *)cp); | |
524 | } | |
525 | ||
526 | if ((rc = write_word(info, wp, data)) != 0) { | |
527 | return (rc); | |
528 | } | |
529 | wp += 4; | |
530 | } | |
531 | ||
532 | /* | |
533 | * handle word aligned part | |
534 | */ | |
535 | while (cnt >= 4) { | |
536 | data = 0; | |
537 | for (i=0; i<4; ++i) { | |
538 | data = (data << 8) | *src++; | |
539 | } | |
540 | if ((rc = write_word(info, wp, data)) != 0) { | |
541 | return (rc); | |
542 | } | |
543 | wp += 4; | |
544 | cnt -= 4; | |
545 | } | |
546 | ||
547 | if (cnt == 0) { | |
548 | return (0); | |
549 | } | |
550 | ||
551 | /* | |
552 | * handle unaligned tail bytes | |
553 | */ | |
554 | data = 0; | |
555 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
556 | data = (data << 8) | *src++; | |
557 | --cnt; | |
558 | } | |
559 | for (; i<4; ++i, ++cp) { | |
560 | data = (data << 8) | (*(uchar *)cp); | |
561 | } | |
562 | ||
563 | return (write_word(info, wp, data)); | |
564 | } | |
565 | ||
566 | /*----------------------------------------------------------------------- | |
567 | * Write a word to Flash, returns: | |
568 | * 0 - OK | |
569 | * 1 - write timeout | |
570 | * 2 - Flash not erased | |
571 | */ | |
572 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
573 | { | |
574 | vu_long *addr = (vu_long*)(info->start[0]); | |
575 | ulong start; | |
576 | int flag; | |
577 | ||
578 | /* Check if Flash is (sufficiently) erased */ | |
579 | if ((*((vu_long *)dest) & data) != data) { | |
580 | return (2); | |
581 | } | |
582 | /* Disable interrupts which might cause a timeout here */ | |
583 | flag = disable_interrupts(); | |
584 | ||
585 | #if 0 | |
586 | addr[0x0555] = 0x00AA00AA; | |
587 | addr[0x02AA] = 0x00550055; | |
588 | addr[0x0555] = 0x00A000A0; | |
589 | #else | |
590 | addr[0x0555] = 0xAAAAAAAA; | |
591 | addr[0x02AA] = 0x55555555; | |
592 | addr[0x0555] = 0xA0A0A0A0; | |
593 | #endif | |
594 | ||
595 | *((vu_long *)dest) = data; | |
596 | ||
597 | /* re-enable interrupts if necessary */ | |
598 | if (flag) | |
599 | enable_interrupts(); | |
600 | ||
601 | /* data polling for D7 */ | |
602 | start = get_timer (0); | |
603 | #if 0 | |
604 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) | |
605 | #else | |
606 | while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) | |
607 | #endif | |
608 | { | |
6d0f6bcf | 609 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
affae2bf WD |
610 | return (1); |
611 | } | |
612 | } | |
613 | return (0); | |
614 | } | |
615 | ||
616 | /*----------------------------------------------------------------------- | |
617 | */ |