]> git.ipfire.org Git - people/ms/u-boot.git/blob - board/amcc/common/flash.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://git.denx.de/u-boot-video
[people/ms/u-boot.git] / board / amcc / common / flash.c
1 /*
2 * (C) Copyright 2004-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6 * Add support for Am29F016D and dynamic switch setting.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27 /*
28 * Modified 4/5/2001
29 * Wait for completion of each sector erase command issued
30 * 4/5/2001
31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
32 */
33
34 #include <common.h>
35 #include <asm/ppc4xx.h>
36 #include <asm/processor.h>
37
38 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
39
40 /*-----------------------------------------------------------------------
41 * Functions
42 */
43 static int write_word(flash_info_t * info, ulong dest, ulong data);
44 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
45 static int write_word_1(flash_info_t * info, ulong dest, ulong data);
46 static int write_word_2(flash_info_t * info, ulong dest, ulong data);
47 static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
48 static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
49 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
50 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
51 #endif
52
53 void flash_print_info(flash_info_t * info)
54 {
55 int i;
56 int k;
57 int size;
58 int erased;
59 volatile unsigned long *flash;
60
61 if (info->flash_id == FLASH_UNKNOWN) {
62 printf("missing or unknown FLASH type\n");
63 return;
64 }
65
66 switch (info->flash_id & FLASH_VENDMASK) {
67 case FLASH_MAN_AMD:
68 printf("AMD ");
69 break;
70 case FLASH_MAN_STM:
71 printf("STM ");
72 break;
73 case FLASH_MAN_FUJ:
74 printf("FUJITSU ");
75 break;
76 case FLASH_MAN_SST:
77 printf("SST ");
78 break;
79 case FLASH_MAN_MX:
80 printf ("MACRONIX ");
81 break;
82 default:
83 printf("Unknown Vendor ");
84 break;
85 }
86
87 switch (info->flash_id & FLASH_TYPEMASK) {
88 case FLASH_AM040:
89 printf("AM29F040 (512 Kbit, uniform sector size)\n");
90 break;
91 case FLASH_AM400B:
92 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
93 break;
94 case FLASH_AM400T:
95 printf("AM29LV400T (4 Mbit, top boot sector)\n");
96 break;
97 case FLASH_AM800B:
98 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
99 break;
100 case FLASH_AM800T:
101 printf("AM29LV800T (8 Mbit, top boot sector)\n");
102 break;
103 case FLASH_AMD016:
104 printf("AM29F016D (16 Mbit, uniform sector size)\n");
105 break;
106 case FLASH_AM160B:
107 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
108 break;
109 case FLASH_AM160T:
110 printf("AM29LV160T (16 Mbit, top boot sector)\n");
111 break;
112 case FLASH_AM320B:
113 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
114 break;
115 case FLASH_AM320T:
116 printf("AM29LV320T (32 Mbit, top boot sector)\n");
117 break;
118 case FLASH_AM033C:
119 printf("AM29LV033C (32 Mbit, top boot sector)\n");
120 break;
121 case FLASH_SST800A:
122 printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
123 break;
124 case FLASH_SST160A:
125 printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
126 break;
127 case FLASH_STMW320DT:
128 printf ("M29W320DT (32 M, top sector)\n");
129 break;
130 case FLASH_MXLV320T:
131 printf ("MXLV320T (32 Mbit, top sector)\n");
132 break;
133 default:
134 printf("Unknown Chip Type\n");
135 break;
136 }
137
138 printf(" Size: %ld KB in %d Sectors\n",
139 info->size >> 10, info->sector_count);
140
141 printf(" Sector Start Addresses:");
142 for (i = 0; i < info->sector_count; ++i) {
143 /*
144 * Check if whole sector is erased
145 */
146 if (i != (info->sector_count - 1))
147 size = info->start[i + 1] - info->start[i];
148 else
149 size = info->start[0] + info->size - info->start[i];
150 erased = 1;
151 flash = (volatile unsigned long *)info->start[i];
152 size = size >> 2; /* divide by 4 for longword access */
153 for (k = 0; k < size; k++) {
154 if (*flash++ != 0xffffffff) {
155 erased = 0;
156 break;
157 }
158 }
159
160 if ((i % 5) == 0)
161 printf("\n ");
162 printf(" %08lX%s%s",
163 info->start[i],
164 erased ? " E" : " ", info->protect[i] ? "RO " : " ");
165 }
166 printf("\n");
167 return;
168 }
169
170
171 /*
172 * The following code cannot be run from FLASH!
173 */
174 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
175 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
176 {
177 /* bit 0 used for big flash marking */
178 if ((ulong)addr & 0x1) {
179 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
180 } else {
181 return flash_get_size_1(addr, info);
182 }
183 }
184
185 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
186 #else
187 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
188 #endif
189 {
190 short i;
191 CONFIG_SYS_FLASH_WORD_SIZE value;
192 ulong base = (ulong) addr;
193 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
194
195 DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
196
197 /* Write auto select command: read Manufacturer ID */
198 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
199 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
200 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
201 udelay(1000);
202
203 value = addr2[0];
204 DEBUGF("FLASH MANUFACT: %x\n", value);
205
206 switch (value) {
207 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
208 info->flash_id = FLASH_MAN_AMD;
209 break;
210 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
211 info->flash_id = FLASH_MAN_FUJ;
212 break;
213 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
214 info->flash_id = FLASH_MAN_SST;
215 break;
216 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
217 info->flash_id = FLASH_MAN_STM;
218 break;
219 default:
220 info->flash_id = FLASH_UNKNOWN;
221 info->sector_count = 0;
222 info->size = 0;
223 return (0); /* no or unknown flash */
224 }
225
226 value = addr2[1]; /* device ID */
227 DEBUGF("\nFLASH DEVICEID: %x\n", value);
228
229 switch (value) {
230 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
231 info->flash_id += FLASH_AM040;
232 info->sector_count = 8;
233 info->size = 0x0080000; /* => 512 KiB */
234 break;
235
236 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
237 info->flash_id += FLASH_AM040;
238 info->sector_count = 8;
239 info->size = 0x0080000; /* => 512 KiB */
240 break;
241
242 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
243 info->flash_id += FLASH_AM040;
244 info->sector_count = 8;
245 info->size = 0x0080000; /* => 512 KiB */
246 break;
247
248 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
249 info->flash_id += FLASH_AMD016;
250 info->sector_count = 32;
251 info->size = 0x00200000; /* => 2 MiB */
252 break;
253
254 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
255 info->flash_id += FLASH_AMDLV033C;
256 info->sector_count = 64;
257 info->size = 0x00400000; /* => 4 MiB */
258 break;
259
260 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
261 info->flash_id += FLASH_AM400T;
262 info->sector_count = 11;
263 info->size = 0x00080000; /* => 512 KiB */
264 break;
265
266 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
267 info->flash_id += FLASH_AM400B;
268 info->sector_count = 11;
269 info->size = 0x00080000; /* => 512 KiB */
270 break;
271
272 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
273 info->flash_id += FLASH_AM800T;
274 info->sector_count = 19;
275 info->size = 0x00100000; /* => 1 MiB */
276 break;
277
278 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
279 info->flash_id += FLASH_AM800B;
280 info->sector_count = 19;
281 info->size = 0x00100000; /* => 1 MiB */
282 break;
283
284 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
285 info->flash_id += FLASH_AM160T;
286 info->sector_count = 35;
287 info->size = 0x00200000; /* => 2 MiB */
288 break;
289
290 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
291 info->flash_id += FLASH_AM160B;
292 info->sector_count = 35;
293 info->size = 0x00200000; /* => 2 MiB */
294 break;
295
296 default:
297 info->flash_id = FLASH_UNKNOWN;
298 return (0); /* => no or unknown flash */
299 }
300
301 /* set up sector start address table */
302 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
303 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
304 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
305 for (i = 0; i < info->sector_count; i++)
306 info->start[i] = base + (i * 0x00010000);
307 } else {
308 if (info->flash_id & FLASH_BTYPE) {
309 /* set sector offsets for bottom boot block type */
310 info->start[0] = base + 0x00000000;
311 info->start[1] = base + 0x00004000;
312 info->start[2] = base + 0x00006000;
313 info->start[3] = base + 0x00008000;
314 for (i = 4; i < info->sector_count; i++) {
315 info->start[i] =
316 base + (i * 0x00010000) - 0x00030000;
317 }
318 } else {
319 /* set sector offsets for top boot block type */
320 i = info->sector_count - 1;
321 info->start[i--] = base + info->size - 0x00004000;
322 info->start[i--] = base + info->size - 0x00006000;
323 info->start[i--] = base + info->size - 0x00008000;
324 for (; i >= 0; i--) {
325 info->start[i] = base + i * 0x00010000;
326 }
327 }
328 }
329
330 /* check for protected sectors */
331 for (i = 0; i < info->sector_count; i++) {
332 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
333 /* D0 = 1 if protected */
334 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
335
336 /* For AMD29033C flash we need to resend the command of *
337 * reading flash protection for upper 8 Mb of flash */
338 if (i == 32) {
339 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
340 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
341 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
342 }
343
344 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
345 info->protect[i] = 0;
346 else
347 info->protect[i] = addr2[2] & 1;
348 }
349
350 /* issue bank reset to return to read mode */
351 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
352
353 return (info->size);
354 }
355
356 static int wait_for_DQ7_1(flash_info_t * info, int sect)
357 {
358 ulong start, now, last;
359 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
360 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
361
362 start = get_timer(0);
363 last = start;
364 while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
365 (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
366 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
367 printf("Timeout\n");
368 return -1;
369 }
370 /* show that we're waiting */
371 if ((now - last) > 1000) { /* every second */
372 putc('.');
373 last = now;
374 }
375 }
376 return 0;
377 }
378
379 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
380 int flash_erase(flash_info_t * info, int s_first, int s_last)
381 {
382 if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
383 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
384 ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
385 ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
386 return flash_erase_2(info, s_first, s_last);
387 } else {
388 return flash_erase_1(info, s_first, s_last);
389 }
390 }
391
392 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
393 #else
394 int flash_erase(flash_info_t * info, int s_first, int s_last)
395 #endif
396 {
397 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
398 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
399 int flag, prot, sect;
400 int i;
401
402 if ((s_first < 0) || (s_first > s_last)) {
403 if (info->flash_id == FLASH_UNKNOWN) {
404 printf("- missing\n");
405 } else {
406 printf("- no sectors to erase\n");
407 }
408 return 1;
409 }
410
411 if (info->flash_id == FLASH_UNKNOWN) {
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 /* Disable interrupts which might cause a timeout here */
431 flag = disable_interrupts();
432
433 /* Start erase on unprotected sectors */
434 for (sect = s_first; sect <= s_last; sect++) {
435 if (info->protect[sect] == 0) { /* not protected */
436 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
437
438 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
439 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
440 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
441 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
442 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
443 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
444 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050; /* block erase */
445 for (i = 0; i < 50; i++)
446 udelay(1000); /* wait 1 ms */
447 } else {
448 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
449 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
450 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
451 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
452 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
453 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
454 }
455 /*
456 * Wait for each sector to complete, it's more
457 * reliable. According to AMD Spec, you must
458 * issue all erase commands within a specified
459 * timeout. This has been seen to fail, especially
460 * if printf()s are included (for debug)!!
461 */
462 wait_for_DQ7_1(info, sect);
463 }
464 }
465
466 /* re-enable interrupts if necessary */
467 if (flag)
468 enable_interrupts();
469
470 /* wait at least 80us - let's wait 1 ms */
471 udelay(1000);
472
473 /* reset to read mode */
474 addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
475 addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
476
477 printf(" done\n");
478 return 0;
479 }
480
481 /*-----------------------------------------------------------------------
482 * Copy memory to flash, returns:
483 * 0 - OK
484 * 1 - write timeout
485 * 2 - Flash not erased
486 */
487 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
488 {
489 ulong cp, wp, data;
490 int i, l, rc;
491
492 wp = (addr & ~3); /* get lower word aligned address */
493
494 /*
495 * handle unaligned start bytes
496 */
497 if ((l = addr - wp) != 0) {
498 data = 0;
499 for (i = 0, cp = wp; i < l; ++i, ++cp) {
500 data = (data << 8) | (*(uchar *) cp);
501 }
502 for (; i < 4 && cnt > 0; ++i) {
503 data = (data << 8) | *src++;
504 --cnt;
505 ++cp;
506 }
507 for (; cnt == 0 && i < 4; ++i, ++cp) {
508 data = (data << 8) | (*(uchar *) cp);
509 }
510
511 if ((rc = write_word(info, wp, data)) != 0) {
512 return (rc);
513 }
514 wp += 4;
515 }
516
517 /*
518 * handle word aligned part
519 */
520 while (cnt >= 4) {
521 data = 0;
522 for (i = 0; i < 4; ++i) {
523 data = (data << 8) | *src++;
524 }
525 if ((rc = write_word(info, wp, data)) != 0) {
526 return (rc);
527 }
528 wp += 4;
529 cnt -= 4;
530 }
531
532 if (cnt == 0) {
533 return (0);
534 }
535
536 /*
537 * handle unaligned tail bytes
538 */
539 data = 0;
540 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
541 data = (data << 8) | *src++;
542 --cnt;
543 }
544 for (; i < 4; ++i, ++cp) {
545 data = (data << 8) | (*(uchar *) cp);
546 }
547
548 return (write_word(info, wp, data));
549 }
550
551 /*-----------------------------------------------------------------------
552 * Copy memory to flash, returns:
553 * 0 - OK
554 * 1 - write timeout
555 * 2 - Flash not erased
556 */
557 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
558 static int write_word(flash_info_t * info, ulong dest, ulong data)
559 {
560 if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
561 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
562 ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
563 ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
564 return write_word_2(info, dest, data);
565 } else {
566 return write_word_1(info, dest, data);
567 }
568 }
569
570 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
571 #else
572 static int write_word(flash_info_t * info, ulong dest, ulong data)
573 #endif
574 {
575 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
576 volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
577 volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
578 ulong start;
579 int i;
580
581 /* Check if Flash is (sufficiently) erased */
582 if ((*((vu_long *)dest) & data) != data) {
583 return (2);
584 }
585
586 for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
587 int flag;
588
589 /* Disable interrupts which might cause a timeout here */
590 flag = disable_interrupts();
591
592 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
593 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
594 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
595
596 dest2[i] = data2[i];
597
598 /* re-enable interrupts if necessary */
599 if (flag)
600 enable_interrupts();
601
602 /* data polling for D7 */
603 start = get_timer(0);
604 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
605 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
606
607 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
608 return (1);
609 }
610 }
611 }
612
613 return (0);
614 }
615
616 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
617
618 #undef CONFIG_SYS_FLASH_WORD_SIZE
619 #define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
620
621 /*
622 * The following code cannot be run from FLASH!
623 */
624 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
625 {
626 short i;
627 int n;
628 CONFIG_SYS_FLASH_WORD_SIZE value;
629 ulong base = (ulong) addr;
630 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
631
632 DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
633
634 /* Write auto select command: read Manufacturer ID */
635 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
636 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
637 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
638 udelay(1000);
639
640 value = addr2[0];
641 DEBUGF("FLASH MANUFACT: %x\n", value);
642
643 switch (value) {
644 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
645 info->flash_id = FLASH_MAN_AMD;
646 break;
647 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
648 info->flash_id = FLASH_MAN_FUJ;
649 break;
650 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
651 info->flash_id = FLASH_MAN_SST;
652 break;
653 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
654 info->flash_id = FLASH_MAN_STM;
655 break;
656 case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
657 info->flash_id = FLASH_MAN_MX;
658 break;
659 default:
660 info->flash_id = FLASH_UNKNOWN;
661 info->sector_count = 0;
662 info->size = 0;
663 return (0); /* no or unknown flash */
664 }
665
666 value = addr2[1]; /* device ID */
667
668 DEBUGF("\nFLASH DEVICEID: %x\n", value);
669
670 switch (value) {
671
672 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
673 info->flash_id += FLASH_AM320T;
674 info->sector_count = 71;
675 info->size = 0x00400000; break; /* => 4 MiB */
676
677 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
678 info->flash_id += FLASH_AM320B;
679 info->sector_count = 71;
680 info->size = 0x00400000; break; /* => 4 MiB */
681
682 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
683 info->flash_id += FLASH_STMW320DT;
684 info->sector_count = 67;
685 info->size = 0x00400000; break; /* => 4 MiB */
686
687 case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
688 info->flash_id += FLASH_MXLV320T;
689 info->sector_count = 71;
690 info->size = 0x00400000;
691 break; /* => 4 MB */
692
693 default:
694 info->flash_id = FLASH_UNKNOWN;
695 return (0); /* => no or unknown flash */
696 }
697
698 /* set up sector start address table */
699 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
700 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
701 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
702 for (i = 0; i < info->sector_count; i++)
703 info->start[i] = base + (i * 0x00010000);
704 } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
705 /* set sector offsets for top boot block type */
706 base += info->size;
707 i = info->sector_count;
708 /* 1 x 16k boot sector */
709 base -= 16 << 10;
710 --i;
711 info->start[i] = base;
712 /* 2 x 8k boot sectors */
713 for (n=0; n<2; ++n) {
714 base -= 8 << 10;
715 --i;
716 info->start[i] = base;
717 }
718 /* 1 x 32k boot sector */
719 base -= 32 << 10;
720 --i;
721 info->start[i] = base;
722
723 while (i > 0) { /* 64k regular sectors */
724 base -= 64 << 10;
725 --i;
726 info->start[i] = base;
727 }
728 } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
729 i = info->sector_count - 1;
730 info->start[i--] = base + info->size - 0x00002000;
731 info->start[i--] = base + info->size - 0x00004000;
732 info->start[i--] = base + info->size - 0x00006000;
733 info->start[i--] = base + info->size - 0x00008000;
734 info->start[i--] = base + info->size - 0x0000a000;
735 info->start[i--] = base + info->size - 0x0000c000;
736 info->start[i--] = base + info->size - 0x0000e000;
737 info->start[i--] = base + info->size - 0x00010000;
738
739 for (; i >= 0; i--)
740 info->start[i] = base + i * 0x00010000;
741 } else {
742 if (info->flash_id & FLASH_BTYPE) {
743 /* set sector offsets for bottom boot block type */
744 info->start[0] = base + 0x00000000;
745 info->start[1] = base + 0x00002000;
746 info->start[2] = base + 0x00004000;
747 info->start[3] = base + 0x00006000;
748 info->start[4] = base + 0x00008000;
749 info->start[5] = base + 0x0000a000;
750 info->start[6] = base + 0x0000c000;
751 info->start[7] = base + 0x0000e000;
752 for (i = 8; i < info->sector_count; i++) {
753 info->start[i] =
754 base + ((i-7) * 0x00010000);
755 }
756 } else {
757 /* set sector offsets for top boot block type */
758 i = info->sector_count - 1;
759 info->start[i--] = base + info->size - 0x00002000;
760 info->start[i--] = base + info->size - 0x00004000;
761 info->start[i--] = base + info->size - 0x00006000;
762 info->start[i--] = base + info->size - 0x00008000;
763 info->start[i--] = base + info->size - 0x0000a000;
764 info->start[i--] = base + info->size - 0x0000c000;
765 info->start[i--] = base + info->size - 0x0000e000;
766 for (; i >= 0; i--) {
767 info->start[i] = base + i * 0x00010000;
768 }
769 }
770 }
771
772 /* check for protected sectors */
773 for (i = 0; i < info->sector_count; i++) {
774 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
775 /* D0 = 1 if protected */
776 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
777
778 /* For AMD29033C flash we need to resend the command of *
779 * reading flash protection for upper 8 Mb of flash */
780 if (i == 32) {
781 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
782 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
783 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
784 }
785
786 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
787 info->protect[i] = 0;
788 else
789 info->protect[i] = addr2[2] & 1;
790 }
791
792 /* issue bank reset to return to read mode */
793 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
794
795 return (info->size);
796 }
797
798 static int wait_for_DQ7_2(flash_info_t * info, int sect)
799 {
800 ulong start, now, last;
801 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
802 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
803
804 start = get_timer(0);
805 last = start;
806 while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
807 (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
808 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
809 printf("Timeout\n");
810 return -1;
811 }
812 /* show that we're waiting */
813 if ((now - last) > 1000) { /* every second */
814 putc('.');
815 last = now;
816 }
817 }
818 return 0;
819 }
820
821 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
822 {
823 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
824 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
825 int flag, prot, sect;
826 int i;
827
828 if ((s_first < 0) || (s_first > s_last)) {
829 if (info->flash_id == FLASH_UNKNOWN) {
830 printf("- missing\n");
831 } else {
832 printf("- no sectors to erase\n");
833 }
834 return 1;
835 }
836
837 if (info->flash_id == FLASH_UNKNOWN) {
838 printf("Can't erase unknown flash type - aborted\n");
839 return 1;
840 }
841
842 prot = 0;
843 for (sect = s_first; sect <= s_last; ++sect) {
844 if (info->protect[sect]) {
845 prot++;
846 }
847 }
848
849 if (prot) {
850 printf("- Warning: %d protected sectors will not be erased!\n",
851 prot);
852 } else {
853 printf("\n");
854 }
855
856 /* Disable interrupts which might cause a timeout here */
857 flag = disable_interrupts();
858
859 /* Start erase on unprotected sectors */
860 for (sect = s_first; sect <= s_last; sect++) {
861 if (info->protect[sect] == 0) { /* not protected */
862 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
863
864 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
865 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
866 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
867 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
868 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
869 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
870 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050; /* block erase */
871 for (i = 0; i < 50; i++)
872 udelay(1000); /* wait 1 ms */
873 } else {
874 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
875 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
876 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
877 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
878 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
879 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
880 }
881 /*
882 * Wait for each sector to complete, it's more
883 * reliable. According to AMD Spec, you must
884 * issue all erase commands within a specified
885 * timeout. This has been seen to fail, especially
886 * if printf()s are included (for debug)!!
887 */
888 wait_for_DQ7_2(info, sect);
889 }
890 }
891
892 /* re-enable interrupts if necessary */
893 if (flag)
894 enable_interrupts();
895
896 /* wait at least 80us - let's wait 1 ms */
897 udelay(1000);
898
899 /* reset to read mode */
900 addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
901 addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
902
903 printf(" done\n");
904 return 0;
905 }
906
907 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
908 {
909 ulong *data_ptr = &data;
910 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
911 volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
912 volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
913 ulong start;
914 int i;
915
916 /* Check if Flash is (sufficiently) erased */
917 if ((*((vu_long *)dest) & data) != data) {
918 return (2);
919 }
920
921 for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
922 int flag;
923
924 /* Disable interrupts which might cause a timeout here */
925 flag = disable_interrupts();
926
927 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
928 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
929 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
930
931 dest2[i] = data2[i];
932
933 /* re-enable interrupts if necessary */
934 if (flag)
935 enable_interrupts();
936
937 /* data polling for D7 */
938 start = get_timer(0);
939 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
940 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
941
942 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
943 return (1);
944 }
945 }
946 }
947
948 return (0);
949 }
950 #endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
"Das U-Boot" Source Tree