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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 | ||
27 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
28 | ||
29 | /*----------------------------------------------------------------------- | |
30 | * Functions | |
31 | */ | |
32 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
33 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
34 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
35 | ||
36 | /*----------------------------------------------------------------------- | |
37 | */ | |
38 | ||
39 | unsigned long flash_init (void) | |
40 | { | |
41 | volatile immap_t *immap = (immap_t *)CFG_IMMR; | |
42 | volatile memctl8xx_t *memctl = &immap->im_memctl; | |
43 | unsigned long size_b0, size_b1; | |
44 | int i; | |
45 | ||
46 | /* Init: no FLASHes known */ | |
47 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { | |
48 | flash_info[i].flash_id = FLASH_UNKNOWN; | |
49 | } | |
50 | ||
51 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
52 | ||
53 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
54 | ||
55 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
56 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
57 | size_b0, size_b0<<20); | |
58 | } | |
59 | ||
60 | size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); | |
61 | ||
62 | if (size_b1 > size_b0) { | |
63 | printf ("## ERROR: " | |
64 | "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n", | |
65 | size_b1, size_b1<<20, | |
66 | size_b0, size_b0<<20 | |
67 | ); | |
68 | flash_info[0].flash_id = FLASH_UNKNOWN; | |
69 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
70 | flash_info[0].sector_count = -1; | |
71 | flash_info[1].sector_count = -1; | |
72 | flash_info[0].size = 0; | |
73 | flash_info[1].size = 0; | |
74 | return (0); | |
75 | } | |
76 | ||
77 | /* Remap FLASH according to real size */ | |
78 | memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); | |
79 | memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; | |
80 | ||
81 | /* Re-do sizing to get full correct info */ | |
82 | size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]); | |
83 | ||
84 | flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]); | |
85 | ||
86 | #if CFG_MONITOR_BASE >= CFG_FLASH_BASE | |
87 | /* monitor protection ON by default */ | |
88 | flash_protect(FLAG_PROTECT_SET, | |
89 | CFG_MONITOR_BASE, | |
90 | CFG_MONITOR_BASE+CFG_MONITOR_LEN-1, | |
91 | &flash_info[0]); | |
92 | #endif | |
93 | ||
94 | if (size_b1) { | |
95 | memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000); | |
96 | memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) | | |
97 | BR_MS_GPCM | BR_V; | |
98 | ||
99 | /* Re-do sizing to get full correct info */ | |
100 | size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0), | |
101 | &flash_info[1]); | |
102 | ||
103 | flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]); | |
104 | ||
105 | #if CFG_MONITOR_BASE >= CFG_FLASH_BASE | |
106 | /* monitor protection ON by default */ | |
107 | flash_protect(FLAG_PROTECT_SET, | |
108 | CFG_MONITOR_BASE, | |
109 | CFG_MONITOR_BASE+CFG_MONITOR_LEN-1, | |
110 | &flash_info[1]); | |
111 | #endif | |
112 | } else { | |
113 | memctl->memc_br1 = 0; /* invalidate bank */ | |
114 | ||
115 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
116 | flash_info[1].sector_count = -1; | |
117 | } | |
118 | ||
119 | flash_info[0].size = size_b0; | |
120 | flash_info[1].size = size_b1; | |
121 | ||
122 | return (size_b0 + size_b1); | |
123 | } | |
124 | ||
125 | /*----------------------------------------------------------------------- | |
126 | */ | |
127 | static void flash_get_offsets (ulong base, flash_info_t *info) | |
128 | { | |
129 | int i; | |
130 | ||
131 | /* set up sector start address table */ | |
132 | if (info->flash_id & FLASH_BTYPE) { | |
133 | /* set sector offsets for bottom boot block type */ | |
134 | info->start[0] = base + 0x00000000; | |
135 | info->start[1] = base + 0x00008000; | |
136 | info->start[2] = base + 0x0000C000; | |
137 | info->start[3] = base + 0x00010000; | |
138 | for (i = 4; i < info->sector_count; i++) { | |
139 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
140 | } | |
141 | } else { | |
142 | /* set sector offsets for top boot block type */ | |
143 | i = info->sector_count - 1; | |
144 | info->start[i--] = base + info->size - 0x00008000; | |
145 | info->start[i--] = base + info->size - 0x0000C000; | |
146 | info->start[i--] = base + info->size - 0x00010000; | |
147 | for (; i >= 0; i--) { | |
148 | info->start[i] = base + i * 0x00020000; | |
149 | } | |
150 | } | |
151 | ||
152 | } | |
153 | ||
154 | /*----------------------------------------------------------------------- | |
155 | */ | |
156 | void flash_print_info (flash_info_t *info) | |
157 | { | |
158 | int i; | |
159 | ||
160 | if (info->flash_id == FLASH_UNKNOWN) { | |
161 | printf ("missing or unknown FLASH type\n"); | |
162 | return; | |
163 | } | |
164 | ||
165 | switch (info->flash_id & FLASH_VENDMASK) { | |
166 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
167 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
168 | default: printf ("Unknown Vendor "); break; | |
169 | } | |
170 | ||
171 | switch (info->flash_id & FLASH_TYPEMASK) { | |
172 | case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
173 | break; | |
174 | case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
175 | break; | |
176 | case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
177 | break; | |
178 | case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
179 | break; | |
180 | case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
181 | break; | |
182 | case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
183 | break; | |
184 | case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
185 | break; | |
186 | case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
187 | break; | |
188 | default: printf ("Unknown Chip Type\n"); | |
189 | break; | |
190 | } | |
191 | ||
192 | printf (" Size: %ld MB in %d Sectors\n", | |
193 | info->size >> 20, info->sector_count); | |
194 | ||
195 | printf (" Sector Start Addresses:"); | |
196 | for (i=0; i<info->sector_count; ++i) { | |
197 | if ((i % 5) == 0) | |
198 | printf ("\n "); | |
199 | printf (" %08lX%s", | |
200 | info->start[i], | |
201 | info->protect[i] ? " (RO)" : " " | |
202 | ); | |
203 | } | |
204 | printf ("\n"); | |
205 | return; | |
206 | } | |
207 | ||
208 | /*----------------------------------------------------------------------- | |
209 | */ | |
210 | ||
211 | ||
212 | /*----------------------------------------------------------------------- | |
213 | */ | |
214 | ||
215 | /* | |
216 | * The following code cannot be run from FLASH! | |
217 | */ | |
218 | ||
219 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) | |
220 | { | |
221 | short i; | |
222 | ulong value; | |
223 | ulong base = (ulong)addr; | |
224 | ||
225 | ||
226 | /* Write auto select command: read Manufacturer ID */ | |
227 | addr[0x0555] = 0x00AA00AA; | |
228 | addr[0x02AA] = 0x00550055; | |
229 | addr[0x0555] = 0x00900090; | |
230 | ||
231 | value = addr[0]; | |
232 | ||
233 | switch (value) { | |
234 | case AMD_MANUFACT: | |
235 | info->flash_id = FLASH_MAN_AMD; | |
236 | break; | |
237 | case FUJ_MANUFACT: | |
238 | info->flash_id = FLASH_MAN_FUJ; | |
239 | break; | |
240 | default: | |
241 | info->flash_id = FLASH_UNKNOWN; | |
242 | info->sector_count = 0; | |
243 | info->size = 0; | |
244 | return (0); /* no or unknown flash */ | |
245 | } | |
246 | ||
247 | value = addr[1]; /* device ID */ | |
248 | ||
249 | switch (value) { | |
250 | case AMD_ID_LV400T: | |
251 | info->flash_id += FLASH_AM400T; | |
252 | info->sector_count = 11; | |
253 | info->size = 0x00100000; | |
254 | break; /* => 1 MB */ | |
255 | ||
256 | case AMD_ID_LV400B: | |
257 | info->flash_id += FLASH_AM400B; | |
258 | info->sector_count = 11; | |
259 | info->size = 0x00100000; | |
260 | break; /* => 1 MB */ | |
261 | ||
262 | case AMD_ID_LV800T: | |
263 | info->flash_id += FLASH_AM800T; | |
264 | info->sector_count = 19; | |
265 | info->size = 0x00200000; | |
266 | break; /* => 2 MB */ | |
267 | ||
268 | case AMD_ID_LV800B: | |
269 | info->flash_id += FLASH_AM800B; | |
270 | info->sector_count = 19; | |
271 | info->size = 0x00200000; | |
272 | break; /* => 2 MB */ | |
273 | ||
274 | case AMD_ID_LV160T: | |
275 | info->flash_id += FLASH_AM160T; | |
276 | info->sector_count = 35; | |
277 | info->size = 0x00400000; | |
278 | break; /* => 4 MB */ | |
279 | ||
280 | case AMD_ID_LV160B: | |
281 | info->flash_id += FLASH_AM160B; | |
282 | info->sector_count = 35; | |
283 | info->size = 0x00400000; | |
284 | break; /* => 4 MB */ | |
285 | #if 0 /* enable when device IDs are available */ | |
286 | case AMD_ID_LV320T: | |
287 | info->flash_id += FLASH_AM320T; | |
288 | info->sector_count = 67; | |
289 | info->size = 0x00800000; | |
290 | break; /* => 8 MB */ | |
291 | ||
292 | case AMD_ID_LV320B: | |
293 | info->flash_id += FLASH_AM320B; | |
294 | info->sector_count = 67; | |
295 | info->size = 0x00800000; | |
296 | break; /* => 8 MB */ | |
297 | #endif | |
298 | default: | |
299 | info->flash_id = FLASH_UNKNOWN; | |
300 | return (0); /* => no or unknown flash */ | |
301 | ||
302 | } | |
303 | ||
304 | /* set up sector start address table */ | |
305 | if (info->flash_id & FLASH_BTYPE) { | |
306 | /* set sector offsets for bottom boot block type */ | |
307 | info->start[0] = base + 0x00000000; | |
308 | info->start[1] = base + 0x00008000; | |
309 | info->start[2] = base + 0x0000C000; | |
310 | info->start[3] = base + 0x00010000; | |
311 | for (i = 4; i < info->sector_count; i++) { | |
312 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
313 | } | |
314 | } else { | |
315 | /* set sector offsets for top boot block type */ | |
316 | i = info->sector_count - 1; | |
317 | info->start[i--] = base + info->size - 0x00008000; | |
318 | info->start[i--] = base + info->size - 0x0000C000; | |
319 | info->start[i--] = base + info->size - 0x00010000; | |
320 | for (; i >= 0; i--) { | |
321 | info->start[i] = base + i * 0x00020000; | |
322 | } | |
323 | } | |
324 | ||
325 | /* check for protected sectors */ | |
326 | for (i = 0; i < info->sector_count; i++) { | |
327 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
328 | /* D0 = 1 if protected */ | |
329 | addr = (volatile unsigned long *)(info->start[i]); | |
330 | info->protect[i] = addr[2] & 1; | |
331 | } | |
332 | ||
333 | /* | |
334 | * Prevent writes to uninitialized FLASH. | |
335 | */ | |
336 | if (info->flash_id != FLASH_UNKNOWN) { | |
337 | addr = (volatile unsigned long *)info->start[0]; | |
338 | ||
339 | *addr = 0x00F000F0; /* reset bank */ | |
340 | } | |
341 | ||
342 | return (info->size); | |
343 | } | |
344 | ||
345 | ||
346 | /*----------------------------------------------------------------------- | |
347 | */ | |
348 | ||
349 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
350 | { | |
351 | vu_long *addr = (vu_long*)(info->start[0]); | |
352 | int flag, prot, sect, l_sect; | |
353 | ulong start, now, last; | |
354 | ||
355 | if ((s_first < 0) || (s_first > s_last)) { | |
356 | if (info->flash_id == FLASH_UNKNOWN) { | |
357 | printf ("- missing\n"); | |
358 | } else { | |
359 | printf ("- no sectors to erase\n"); | |
360 | } | |
361 | return 1; | |
362 | } | |
363 | ||
364 | if ((info->flash_id == FLASH_UNKNOWN) || | |
365 | (info->flash_id > FLASH_AMD_COMP)) { | |
366 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
367 | info->flash_id); | |
368 | return 1; | |
369 | } | |
370 | ||
371 | prot = 0; | |
372 | for (sect=s_first; sect<=s_last; ++sect) { | |
373 | if (info->protect[sect]) { | |
374 | prot++; | |
375 | } | |
376 | } | |
377 | ||
378 | if (prot) { | |
379 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
380 | prot); | |
381 | } else { | |
382 | printf ("\n"); | |
383 | } | |
384 | ||
385 | l_sect = -1; | |
386 | ||
387 | /* Disable interrupts which might cause a timeout here */ | |
388 | flag = disable_interrupts(); | |
389 | ||
390 | addr[0x0555] = 0x00AA00AA; | |
391 | addr[0x02AA] = 0x00550055; | |
392 | addr[0x0555] = 0x00800080; | |
393 | addr[0x0555] = 0x00AA00AA; | |
394 | addr[0x02AA] = 0x00550055; | |
395 | ||
396 | /* Start erase on unprotected sectors */ | |
397 | for (sect = s_first; sect<=s_last; sect++) { | |
398 | if (info->protect[sect] == 0) { /* not protected */ | |
399 | addr = (vu_long*)(info->start[sect]); | |
400 | addr[0] = 0x00300030; | |
401 | l_sect = sect; | |
402 | } | |
403 | } | |
404 | ||
405 | /* re-enable interrupts if necessary */ | |
406 | if (flag) | |
407 | enable_interrupts(); | |
408 | ||
409 | /* wait at least 80us - let's wait 1 ms */ | |
410 | udelay (1000); | |
411 | ||
412 | /* | |
413 | * We wait for the last triggered sector | |
414 | */ | |
415 | if (l_sect < 0) | |
416 | goto DONE; | |
417 | ||
418 | start = get_timer (0); | |
419 | last = start; | |
420 | addr = (vu_long*)(info->start[l_sect]); | |
421 | while ((addr[0] & 0x00800080) != 0x00800080) { | |
422 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { | |
423 | printf ("Timeout\n"); | |
424 | return 1; | |
425 | } | |
426 | /* show that we're waiting */ | |
427 | if ((now - last) > 1000) { /* every second */ | |
428 | putc ('.'); | |
429 | last = now; | |
430 | } | |
431 | } | |
432 | ||
433 | DONE: | |
434 | /* reset to read mode */ | |
435 | addr = (volatile unsigned long *)info->start[0]; | |
436 | addr[0] = 0x00F000F0; /* reset bank */ | |
437 | ||
438 | printf (" done\n"); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | /*----------------------------------------------------------------------- | |
443 | * Copy memory to flash, returns: | |
444 | * 0 - OK | |
445 | * 1 - write timeout | |
446 | * 2 - Flash not erased | |
447 | */ | |
448 | ||
449 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
450 | { | |
451 | ulong cp, wp, data; | |
452 | int i, l, rc; | |
453 | ||
454 | wp = (addr & ~3); /* get lower word aligned address */ | |
455 | ||
456 | /* | |
457 | * handle unaligned start bytes | |
458 | */ | |
459 | if ((l = addr - wp) != 0) { | |
460 | data = 0; | |
461 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
462 | data = (data << 8) | (*(uchar *)cp); | |
463 | } | |
464 | for (; i<4 && cnt>0; ++i) { | |
465 | data = (data << 8) | *src++; | |
466 | --cnt; | |
467 | ++cp; | |
468 | } | |
469 | for (; cnt==0 && i<4; ++i, ++cp) { | |
470 | data = (data << 8) | (*(uchar *)cp); | |
471 | } | |
472 | ||
473 | if ((rc = write_word(info, wp, data)) != 0) { | |
474 | return (rc); | |
475 | } | |
476 | wp += 4; | |
477 | } | |
478 | ||
479 | /* | |
480 | * handle word aligned part | |
481 | */ | |
482 | while (cnt >= 4) { | |
483 | data = 0; | |
484 | for (i=0; i<4; ++i) { | |
485 | data = (data << 8) | *src++; | |
486 | } | |
487 | if ((rc = write_word(info, wp, data)) != 0) { | |
488 | return (rc); | |
489 | } | |
490 | wp += 4; | |
491 | cnt -= 4; | |
492 | } | |
493 | ||
494 | if (cnt == 0) { | |
495 | return (0); | |
496 | } | |
497 | ||
498 | /* | |
499 | * handle unaligned tail bytes | |
500 | */ | |
501 | data = 0; | |
502 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
503 | data = (data << 8) | *src++; | |
504 | --cnt; | |
505 | } | |
506 | for (; i<4; ++i, ++cp) { | |
507 | data = (data << 8) | (*(uchar *)cp); | |
508 | } | |
509 | ||
510 | return (write_word(info, wp, data)); | |
511 | } | |
512 | ||
513 | /*----------------------------------------------------------------------- | |
514 | * Write a word to Flash, returns: | |
515 | * 0 - OK | |
516 | * 1 - write timeout | |
517 | * 2 - Flash not erased | |
518 | */ | |
519 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
520 | { | |
521 | vu_long *addr = (vu_long*)(info->start[0]); | |
522 | ulong start; | |
523 | int flag; | |
524 | ||
525 | /* Check if Flash is (sufficiently) erased */ | |
526 | if ((*((vu_long *)dest) & data) != data) { | |
527 | return (2); | |
528 | } | |
529 | /* Disable interrupts which might cause a timeout here */ | |
530 | flag = disable_interrupts(); | |
531 | ||
532 | addr[0x0555] = 0x00AA00AA; | |
533 | addr[0x02AA] = 0x00550055; | |
534 | addr[0x0555] = 0x00A000A0; | |
535 | ||
536 | *((vu_long *)dest) = data; | |
537 | ||
538 | /* re-enable interrupts if necessary */ | |
539 | if (flag) | |
540 | enable_interrupts(); | |
541 | ||
542 | /* data polling for D7 */ | |
543 | start = get_timer (0); | |
544 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { | |
545 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { | |
546 | return (1); | |
547 | } | |
548 | } | |
549 | return (0); | |
550 | } | |
551 | ||
552 | /*----------------------------------------------------------------------- | |
553 | */ |