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608c9146 WD |
1 | /* |
2 | * (C) Copyright 2003 | |
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 | /* | |
25 | * Yoo. Jonghoon, IPone, yooth@ipone.co.kr | |
3bac3513 | 26 | * U-Boot port on RPXlite board |
608c9146 WD |
27 | * |
28 | * Some of flash control words are modified. (from 2x16bit device | |
29 | * to 4x8bit device) | |
30 | * RPXLite board I tested has only 4 AM29LV800BB devices. Other devices | |
31 | * are not tested. | |
32 | * | |
33 | * (?) Does an RPXLite board which | |
34 | * does not use AM29LV800 flash memory exist ? | |
35 | * I don't know... | |
36 | */ | |
37 | ||
38 | #include <common.h> | |
39 | #include <mpc8xx.h> | |
40 | ||
41 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
42 | ||
43 | /*----------------------------------------------------------------------- | |
44 | * Functions | |
45 | */ | |
46 | static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info); | |
47 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
48 | static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips); | |
49 | static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id); | |
50 | static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id); | |
51 | ||
52 | /*----------------------------------------------------------------------- | |
53 | */ | |
54 | ||
55 | unsigned long flash_init (void) | |
56 | { | |
57 | volatile immap_t *immap = (immap_t *)CFG_IMMR; | |
58 | volatile memctl8xx_t *memctl = &immap->im_memctl; | |
59 | unsigned long size_b0, size_b1; | |
8bde7f77 WD |
60 | short manu, dev_id; |
61 | int i; | |
608c9146 WD |
62 | |
63 | /* Init: no FLASHes known */ | |
64 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { | |
65 | flash_info[i].flash_id = FLASH_UNKNOWN; | |
66 | } | |
67 | ||
68 | /* Do sizing to get full correct info */ | |
69 | ||
8bde7f77 | 70 | flash_get_id_word((void*)CFG_FLASH_BASE0,&manu,&dev_id); |
608c9146 | 71 | |
8bde7f77 | 72 | size_b0 = flash_get_size(manu, dev_id, &flash_info[0]); |
608c9146 | 73 | |
8bde7f77 | 74 | flash_get_offsets (CFG_FLASH_BASE0, &flash_info[0],0); |
608c9146 WD |
75 | |
76 | memctl->memc_or0 = CFG_OR_TIMING_FLASH | (0 - size_b0); | |
77 | ||
78 | #if CFG_MONITOR_BASE >= CFG_FLASH_BASE0 | |
79 | /* monitor protection ON by default */ | |
80 | flash_protect(FLAG_PROTECT_SET, | |
81 | CFG_MONITOR_BASE, | |
3b57fe0a | 82 | CFG_MONITOR_BASE+monitor_flash_len-1, |
608c9146 WD |
83 | &flash_info[0]); |
84 | #endif | |
85 | ||
8bde7f77 | 86 | flash_get_id_long((void*)CFG_FLASH_BASE1,&manu,&dev_id); |
608c9146 | 87 | |
8bde7f77 | 88 | size_b1 = 2 * flash_get_size(manu, dev_id, &flash_info[1]); |
608c9146 | 89 | |
8bde7f77 | 90 | flash_get_offsets(CFG_FLASH_BASE1, &flash_info[1],1); |
608c9146 WD |
91 | |
92 | memctl->memc_or1 = CFG_OR_TIMING_FLASH | (0 - size_b1); | |
93 | ||
94 | flash_info[0].size = size_b0; | |
95 | flash_info[1].size = size_b1; | |
96 | ||
8bde7f77 | 97 | return (size_b0+size_b1); |
608c9146 WD |
98 | } |
99 | ||
100 | /*----------------------------------------------------------------------- | |
101 | */ | |
102 | static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips) | |
103 | { | |
8bde7f77 WD |
104 | int i, addr_shift; |
105 | vu_short *addr = (vu_short*)base; | |
608c9146 WD |
106 | |
107 | addr[0x555] = 0x00AA ; | |
108 | addr[0xAAA] = 0x0055 ; | |
109 | addr[0x555] = 0x0090 ; | |
110 | ||
8bde7f77 | 111 | addr_shift = (two_chips ? 2 : 1 ); |
608c9146 WD |
112 | |
113 | /* set up sector start address table */ | |
114 | if (info->flash_id & FLASH_BTYPE) { | |
115 | /* set sector offsets for bottom boot block type */ | |
116 | info->start[0] = base + (0x00000000<<addr_shift); | |
117 | info->start[1] = base + (0x00002000<<addr_shift); | |
118 | info->start[2] = base + (0x00003000<<addr_shift); | |
119 | info->start[3] = base + (0x00004000<<addr_shift); | |
120 | for (i = 4; i < info->sector_count; i++) { | |
121 | info->start[i] = base + ((i-3) * (0x00008000<<addr_shift)) ; | |
122 | } | |
123 | } else { | |
124 | /* set sector offsets for top boot block type */ | |
125 | i = info->sector_count - 1; | |
126 | info->start[i--] = base + info->size - (0x00002000<<addr_shift); | |
127 | info->start[i--] = base + info->size - (0x00003000<<addr_shift); | |
128 | info->start[i--] = base + info->size - (0x00004000<<addr_shift); | |
129 | for (; i >= 0; i--) { | |
130 | info->start[i] = base + i * (0x00008000<<addr_shift); | |
131 | } | |
132 | } | |
133 | ||
134 | /* check for protected sectors */ | |
135 | for (i = 0; i < info->sector_count; i++) { | |
136 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
137 | /* D0 = 1 if protected */ | |
138 | addr = (vu_short *)(info->start[i]); | |
139 | info->protect[i] = addr[1<<addr_shift] & 1 ; | |
140 | } | |
141 | ||
142 | addr = (vu_short *)info->start[0]; | |
143 | *addr = 0xF0F0; /* reset bank */ | |
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 | printf ("missing or unknown FLASH type\n"); | |
154 | return; | |
155 | } | |
156 | ||
157 | switch (info->flash_id & FLASH_VENDMASK) { | |
158 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
159 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
160 | case FLASH_MAN_TOSH: printf ("TOSHIBA "); break; | |
161 | default: printf ("Unknown Vendor "); break; | |
162 | } | |
163 | ||
164 | switch (info->flash_id & FLASH_TYPEMASK) { | |
165 | case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
166 | break; | |
167 | case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
168 | break; | |
169 | case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
170 | break; | |
171 | case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
172 | break; | |
173 | case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
174 | break; | |
175 | case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
176 | break; | |
177 | case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
178 | break; | |
179 | case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
180 | break; | |
181 | default: printf ("Unknown Chip Type\n"); | |
182 | break; | |
183 | } | |
184 | ||
185 | printf (" Size: %ld MB in %d Sectors\n", | |
186 | info->size >> 20, info->sector_count); | |
187 | ||
188 | printf (" Sector Start Addresses:"); | |
189 | for (i=0; i<info->sector_count; ++i) { | |
190 | if ((i % 5) == 0) | |
191 | printf ("\n "); | |
192 | printf (" %08lX%s", | |
193 | info->start[i], | |
194 | info->protect[i] ? " (RO)" : " " | |
195 | ); | |
196 | } | |
197 | printf ("\n"); | |
198 | } | |
199 | ||
200 | /*----------------------------------------------------------------------- | |
201 | */ | |
202 | ||
203 | ||
204 | /*----------------------------------------------------------------------- | |
205 | */ | |
206 | ||
207 | /* | |
208 | * The following code cannot be run from FLASH! | |
209 | */ | |
210 | ||
211 | static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id) | |
212 | { | |
8bde7f77 | 213 | vu_short *addr = (vu_short*)ptr; |
608c9146 WD |
214 | |
215 | addr[0x555] = 0x00AA ; | |
216 | addr[0xAAA] = 0x0055 ; | |
217 | addr[0x555] = 0x0090 ; | |
218 | ||
219 | *ptr_manuf = addr[0]; | |
220 | *ptr_dev_id = addr[1]; | |
221 | ||
8bde7f77 | 222 | addr[0] = 0xf0f0; /* return to normal */ |
608c9146 WD |
223 | } |
224 | ||
225 | static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id) | |
226 | { | |
8bde7f77 WD |
227 | vu_short *addr = (vu_short*)ptr; |
228 | vu_short *addr1, *addr2, *addr3; | |
608c9146 | 229 | |
8bde7f77 WD |
230 | addr1 = (vu_short*) ( ((int)ptr) + (0x5555<<2) ); |
231 | addr2 = (vu_short*) ( ((int)ptr) + (0x2AAA<<2) ); | |
232 | addr3 = (vu_short*) ( ((int)ptr) + (0x5555<<2) ); | |
608c9146 | 233 | |
8bde7f77 WD |
234 | *addr1 = 0xAAAA; |
235 | *addr2 = 0x5555; | |
236 | *addr3 = 0x9090; | |
608c9146 WD |
237 | |
238 | *ptr_manuf = addr[0]; | |
239 | *ptr_dev_id = addr[2]; | |
240 | ||
8bde7f77 | 241 | addr[0] = 0xf0f0; /* return to normal */ |
608c9146 WD |
242 | } |
243 | ||
244 | static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info) | |
245 | { | |
246 | switch (manu) { | |
247 | case ((short)AMD_MANUFACT): | |
248 | info->flash_id = FLASH_MAN_AMD; | |
249 | break; | |
250 | case ((short)FUJ_MANUFACT): | |
251 | info->flash_id = FLASH_MAN_FUJ; | |
252 | break; | |
253 | case ((short)TOSH_MANUFACT): | |
254 | info->flash_id = FLASH_MAN_TOSH; | |
255 | break; | |
256 | default: | |
257 | info->flash_id = FLASH_UNKNOWN; | |
258 | info->sector_count = 0; | |
259 | info->size = 0; | |
260 | return (0); /* no or unknown flash */ | |
261 | } | |
262 | ||
263 | ||
264 | switch (dev_id) { | |
265 | case ((short)TOSH_ID_FVT160): | |
266 | info->flash_id += FLASH_AM160T; | |
267 | info->sector_count = 35; | |
268 | info->size = 0x00200000; | |
269 | break; /* => 1 MB */ | |
270 | ||
271 | case ((short)TOSH_ID_FVB160): | |
272 | info->flash_id += FLASH_AM160B; | |
273 | info->sector_count = 35; | |
274 | info->size = 0x00200000; | |
275 | break; /* => 1 MB */ | |
276 | ||
277 | case ((short)AMD_ID_LV400T): | |
278 | info->flash_id += FLASH_AM400T; | |
279 | info->sector_count = 11; | |
280 | info->size = 0x00100000; | |
281 | break; /* => 1 MB */ | |
282 | ||
283 | case ((short)AMD_ID_LV400B): | |
284 | info->flash_id += FLASH_AM400B; | |
285 | info->sector_count = 11; | |
286 | info->size = 0x00100000; | |
287 | break; /* => 1 MB */ | |
288 | ||
289 | case ((short)AMD_ID_LV800T): | |
290 | info->flash_id += FLASH_AM800T; | |
291 | info->sector_count = 19; | |
292 | info->size = 0x00200000; | |
293 | break; /* => 2 MB */ | |
294 | ||
295 | case ((short)AMD_ID_LV800B): | |
296 | info->flash_id += FLASH_AM800B; | |
297 | info->sector_count = 19; | |
8bde7f77 | 298 | info->size = 0x00400000; /*%%% Size doubled by yooth */ |
608c9146 WD |
299 | break; /* => 4 MB */ |
300 | ||
301 | case ((short)AMD_ID_LV160T): | |
302 | info->flash_id += FLASH_AM160T; | |
303 | info->sector_count = 35; | |
304 | info->size = 0x00200000; | |
305 | break; /* => 4 MB */ | |
306 | ||
307 | case ((short)AMD_ID_LV160B): | |
308 | info->flash_id += FLASH_AM160B; | |
309 | info->sector_count = 35; | |
310 | info->size = 0x00200000; | |
311 | break; /* => 4 MB */ | |
312 | default: | |
313 | info->flash_id = FLASH_UNKNOWN; | |
314 | return (0); /* => no or unknown flash */ | |
315 | ||
316 | } | |
317 | ||
8bde7f77 | 318 | return(info->size); |
608c9146 WD |
319 | } |
320 | ||
321 | ||
322 | /*----------------------------------------------------------------------- | |
323 | */ | |
324 | ||
325 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
326 | { | |
327 | vu_short *addr = (vu_short*)(info->start[0]); | |
328 | int flag, prot, sect, l_sect; | |
329 | ulong start, now, last; | |
330 | ||
331 | if ((s_first < 0) || (s_first > s_last)) { | |
332 | if (info->flash_id == FLASH_UNKNOWN) { | |
333 | printf ("- missing\n"); | |
334 | } else { | |
335 | printf ("- no sectors to erase\n"); | |
336 | } | |
337 | return 1; | |
338 | } | |
339 | ||
340 | if ((info->flash_id == FLASH_UNKNOWN) || | |
341 | (info->flash_id > FLASH_AMD_COMP)) { | |
342 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
343 | info->flash_id); | |
344 | return 1; | |
345 | } | |
346 | ||
347 | prot = 0; | |
348 | for (sect=s_first; sect<=s_last; ++sect) { | |
349 | if (info->protect[sect]) { | |
350 | prot++; | |
351 | } | |
352 | } | |
353 | ||
354 | if (prot) { | |
355 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
356 | prot); | |
357 | } else { | |
358 | printf ("\n"); | |
359 | } | |
360 | ||
361 | l_sect = -1; | |
362 | ||
363 | /* Disable interrupts which might cause a timeout here */ | |
364 | flag = disable_interrupts(); | |
365 | ||
366 | addr[0x555] = (vu_short)0xAAAAAAAA; | |
367 | addr[0xAAA] = (vu_short)0x55555555; | |
368 | addr[0x555] = (vu_short)0x80808080; | |
369 | addr[0x555] = (vu_short)0xAAAAAAAA; | |
370 | addr[0xAAA] = (vu_short)0x55555555; | |
371 | ||
372 | /* Start erase on unprotected sectors */ | |
373 | for (sect = s_first; sect<=s_last; sect++) { | |
374 | if (info->protect[sect] == 0) { /* not protected */ | |
375 | addr = (vu_short *)(info->start[sect]) ; | |
376 | addr[0] = (vu_short)0x30303030 ; | |
377 | l_sect = sect; | |
378 | } | |
379 | } | |
380 | ||
381 | /* re-enable interrupts if necessary */ | |
382 | if (flag) | |
383 | enable_interrupts(); | |
384 | ||
385 | /* wait at least 80us - let's wait 1 ms */ | |
386 | udelay (1000); | |
387 | ||
388 | /* | |
389 | * We wait for the last triggered sector | |
390 | */ | |
391 | if (l_sect < 0) | |
392 | goto DONE; | |
393 | ||
394 | start = get_timer (0); | |
395 | last = start; | |
396 | addr = (vu_short *)(info->start[l_sect]); | |
397 | while ((addr[0] & 0x8080) != 0x8080) { | |
398 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { | |
399 | printf ("Timeout\n"); | |
400 | return 1; | |
401 | } | |
402 | /* show that we're waiting */ | |
403 | if ((now - last) > 1000) { /* every second */ | |
404 | putc ('.'); | |
405 | last = now; | |
406 | } | |
407 | } | |
408 | ||
409 | DONE: | |
410 | /* reset to read mode */ | |
411 | addr = (vu_short *)info->start[0]; | |
412 | addr[0] = (vu_short)0xF0F0F0F0; /* reset bank */ | |
413 | ||
414 | printf (" done\n"); | |
415 | return 0; | |
416 | } | |
417 | ||
418 | /*----------------------------------------------------------------------- | |
419 | * Copy memory to flash, returns: | |
420 | * 0 - OK | |
421 | * 1 - write timeout | |
422 | * 2 - Flash not erased | |
423 | */ | |
424 | ||
425 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
426 | { | |
427 | ulong cp, wp, data; | |
428 | int i, l, rc; | |
429 | ||
430 | wp = (addr & ~3); /* get lower word aligned address */ | |
431 | ||
432 | /* | |
433 | * handle unaligned start bytes | |
434 | */ | |
435 | if ((l = addr - wp) != 0) { | |
436 | data = 0; | |
437 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
438 | data = (data << 8) | (*(uchar *)cp); | |
439 | } | |
440 | for (; i<4 && cnt>0; ++i) { | |
441 | data = (data << 8) | *src++; | |
442 | --cnt; | |
443 | ++cp; | |
444 | } | |
445 | for (; cnt==0 && i<4; ++i, ++cp) { | |
446 | data = (data << 8) | (*(uchar *)cp); | |
447 | } | |
448 | ||
449 | if ((rc = write_word(info, wp, data)) != 0) { | |
450 | return (rc); | |
451 | } | |
452 | wp += 4; | |
453 | } | |
454 | ||
455 | /* | |
456 | * handle word aligned part | |
457 | */ | |
458 | while (cnt >= 4) { | |
459 | data = 0; | |
460 | for (i=0; i<4; ++i) { | |
461 | data = (data << 8) | *src++; | |
462 | } | |
463 | if ((rc = write_word(info, wp, data)) != 0) { | |
464 | return (rc); | |
465 | } | |
466 | wp += 4; | |
467 | cnt -= 4; | |
468 | } | |
469 | ||
470 | if (cnt == 0) { | |
471 | return (0); | |
472 | } | |
473 | ||
474 | /* | |
475 | * handle unaligned tail bytes | |
476 | */ | |
477 | data = 0; | |
478 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
479 | data = (data << 8) | *src++; | |
480 | --cnt; | |
481 | } | |
482 | for (; i<4; ++i, ++cp) { | |
483 | data = (data << 8) | (*(uchar *)cp); | |
484 | } | |
485 | ||
486 | return (write_word(info, wp, data)); | |
487 | } | |
488 | ||
489 | /*----------------------------------------------------------------------- | |
490 | * Write a word to Flash, returns: | |
491 | * 0 - OK | |
492 | * 1 - write timeout | |
493 | * 2 - Flash not erased | |
494 | */ | |
495 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
496 | { | |
497 | vu_short *addr = (vu_short *)(info->start[0]); | |
498 | vu_short sdata; | |
499 | ||
500 | ulong start; | |
501 | int flag; | |
502 | ||
503 | /* Check if Flash is (sufficiently) erased */ | |
504 | if ((*((vu_long *)dest) & data) != data) { | |
505 | return (2); | |
506 | } | |
507 | ||
508 | /* First write upper 16 bits */ | |
509 | sdata = (short)(data>>16); | |
510 | ||
511 | /* Disable interrupts which might cause a timeout here */ | |
512 | flag = disable_interrupts(); | |
513 | ||
514 | addr[0x555] = 0xAAAA; | |
515 | addr[0xAAA] = 0x5555; | |
516 | addr[0x555] = 0xA0A0; | |
517 | ||
518 | *((vu_short *)dest) = sdata; | |
519 | ||
520 | /* re-enable interrupts if necessary */ | |
521 | if (flag) | |
522 | enable_interrupts(); | |
523 | ||
524 | /* data polling for D7 */ | |
525 | start = get_timer (0); | |
526 | while ((*((vu_short *)dest) & 0x8080) != (sdata & 0x8080)) { | |
527 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { | |
528 | return (1); | |
529 | } | |
530 | } | |
531 | ||
532 | /* Now write lower 16 bits */ | |
533 | sdata = (short)(data&0xffff); | |
534 | ||
535 | /* Disable interrupts which might cause a timeout here */ | |
536 | flag = disable_interrupts(); | |
537 | ||
538 | addr[0x555] = 0xAAAA; | |
539 | addr[0xAAA] = 0x5555; | |
540 | addr[0x555] = 0xA0A0; | |
541 | ||
542 | *((vu_short *)dest + 1) = sdata; | |
543 | ||
544 | /* re-enable interrupts if necessary */ | |
545 | if (flag) | |
546 | enable_interrupts(); | |
547 | ||
548 | /* data polling for D7 */ | |
549 | start = get_timer (0); | |
550 | while ((*((vu_short *)dest + 1) & 0x8080) != (sdata & 0x8080)) { | |
551 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { | |
552 | return (1); | |
553 | } | |
554 | } | |
555 | return (0); | |
556 | } | |
557 | ||
558 | /*----------------------------------------------------------------------- | |
559 | */ |