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rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / board / exbitgen / flash.c
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d1cbe85b
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 * Modified 4/5/2001
26 * Wait for completion of each sector erase command issued
27 * 4/5/2001
28 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
29 */
30
4ff170a8 31#include <common.h>
d1cbe85b
WD		 32#include <asm/u-boot.h>
33#include <asm/processor.h>
34#include <ppc4xx.h>
d1cbe85b 35
6d0f6bcf 36flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
d1cbe85b
WD		 37
38/*-----------------------------------------------------------------------
39 * Functions
40 */
41static ulong flash_get_size (vu_long *addr, flash_info_t *info);
42static int write_word (flash_info_t *info, ulong dest, ulong data);
43
44#ifdef MEIGSBOARD_ONBOARD_FLASH /* onboard = 2MB */
45# ifdef CONFIG_EXBITGEN
46# define FLASH_WORD_SIZE unsigned long
47# endif
48#else /* Meigsboard socket flash = 512KB */
49# ifdef CONFIG_EXBITGEN
50# define FLASH_WORD_SIZE unsigned char
51# endif
52#endif
53
54#ifdef CONFIG_EXBITGEN
55#define ADDR0 0x5555
56#define ADDR1 0x2aaa
57#define FLASH_WORD_SIZE unsigned char
58#endif
59
60/*-----------------------------------------------------------------------
61 */
62
63unsigned long flash_init (void)
64{
65 unsigned long bank_size;
66 unsigned long tot_size;
67 unsigned long bank_addr;
68 int i;
69
70 /* Init: no FLASHes known */
6d0f6bcf 71 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
d1cbe85b
WD		 72 flash_info[i].flash_id = FLASH_UNKNOWN;
73 flash_info[i].size = 0;
74 }
75
76 tot_size = 0;
77
78 /* Detect Boot Flash */
6d0f6bcf 79 bank_addr = CONFIG_SYS_FLASH0_BASE;
d1cbe85b
WD		 80 bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[0]);
81 if (bank_size > 0) {
82 (void)flash_protect(FLAG_PROTECT_CLEAR,
83 bank_addr,
84 bank_addr + bank_size - 1,
85 &flash_info[0]);
86 }
87 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
88 printf ("## Unknown FLASH on Boot Flash Bank\n");
89 }
90 flash_info[0].size = bank_size;
91 tot_size += bank_size;
92
93 /* Detect Application Flash */
6d0f6bcf
JCPV		 94 bank_addr = CONFIG_SYS_FLASH1_BASE;
95 for (i = 1; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
d1cbe85b
WD		 96 bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[i]);
97 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
98 break;
99 }
100 if (bank_size > 0) {
101 (void)flash_protect(FLAG_PROTECT_CLEAR,
102 bank_addr,
103 bank_addr + bank_size - 1,
104 &flash_info[i]);
105 }
106 flash_info[i].size = bank_size;
107 tot_size += bank_size;
108 bank_addr += bank_size;
109 }
110 if (flash_info[1].flash_id == FLASH_UNKNOWN) {
111 printf ("## Unknown FLASH on Application Flash Bank\n");
112 }
113
114 /* Protect monitor and environment sectors */
6d0f6bcf 115#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
d1cbe85b 116 flash_protect(FLAG_PROTECT_SET,
6d0f6bcf
JCPV		 117 CONFIG_SYS_MONITOR_BASE,
118 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
d1cbe85b 119 &flash_info[0]);
6d0f6bcf
JCPV		 120#if 0xfffffffc >= CONFIG_SYS_FLASH0_BASE
121#if 0xfffffffc <= CONFIG_SYS_FLASH0_BASE + CONFIG_SYS_FLASH0_SIZE - 1
d1cbe85b
WD		 122 flash_protect(FLAG_PROTECT_SET,
123 0xfffffffc, 0xffffffff,
124 &flash_info[0]);
125#endif
126#endif
127#endif
128
0e8d1586 129#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
d1cbe85b 130 flash_protect(FLAG_PROTECT_SET,
0e8d1586
JCPV		 131 CONFIG_ENV_ADDR,
132 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
d1cbe85b
WD		 133 &flash_info[0]);
134#endif
135
136 return tot_size;
137}
138
139/*-----------------------------------------------------------------------
140 */
141void 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 case FLASH_MAN_SST: printf ("SST "); break;
154 default: printf ("Unknown Vendor "); break;
155 }
156
157 switch (info->flash_id & FLASH_TYPEMASK) {
158 case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
159 break;
160 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
161 break;
162 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
163 break;
164 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
165 break;
166 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
167 break;
168 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
169 break;
170 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
171 break;
172 case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
173 break;
174 case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
175 break;
176 case FLASH_AMDLV033C: printf ("AM29LV033C (32 Mbit, uniform sector size)\n");
177 break;
178 case FLASH_AMDLV065D: printf ("AM29LV065D (64 Mbit, uniform sector size)\n");
179 break;
180 case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
181 break;
182 case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
183 break;
184 case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
185 break;
186 default: printf ("Unknown Chip Type\n");
187 break;
188 }
189
190 printf (" Size: %ld KB in %d Sectors\n",
191 info->size >> 10, info->sector_count);
192
193 printf (" Sector Start Addresses:");
194 for (i=0; i<info->sector_count; ++i) {
195 if ((i % 5) == 0)
196 printf ("\n ");
197 printf (" %08lX%s",
198 info->start[i],
199 info->protect[i] ? " (RO)" : " "
200 );
201 }
202 printf ("\n");
203}
204
205/*-----------------------------------------------------------------------
206 */
207
208
209/*-----------------------------------------------------------------------
210 */
211
212/*
213 * The following code cannot be run from FLASH!
214 */
215static ulong flash_get_size (vu_long *addr, flash_info_t *info)
216{
217 short i;
218 FLASH_WORD_SIZE value;
219 ulong base = (ulong)addr;
945af8d7 220 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
d1cbe85b
WD		 221
222 /* Write auto select command: read Manufacturer ID */
223 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
224 addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
225 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
226
227 value = addr2[0];
228
229 switch (value) {
230 case (FLASH_WORD_SIZE)AMD_MANUFACT:
231 info->flash_id = FLASH_MAN_AMD;
232 break;
233 case (FLASH_WORD_SIZE)FUJ_MANUFACT:
234 info->flash_id = FLASH_MAN_FUJ;
235 break;
236 case (FLASH_WORD_SIZE)SST_MANUFACT:
237 info->flash_id = FLASH_MAN_SST;
238 break;
239 default:
240 info->flash_id = FLASH_UNKNOWN;
241 info->sector_count = 0;
242 info->size = 0;
243 return (0); /* no or unknown flash */
244 }
245
246 value = addr2[1]; /* device ID */
247
248 switch (value) {
249 case (FLASH_WORD_SIZE)AMD_ID_F040B:
945af8d7 250 info->flash_id += FLASH_AM040;
d1cbe85b
WD		 251 info->sector_count = 8;
252 info->size = 0x0080000; /* => 512 ko */
253 break;
254 case (FLASH_WORD_SIZE)AMD_ID_LV400T:
255 info->flash_id += FLASH_AM400T;
256 info->sector_count = 11;
257 info->size = 0x00080000;
258 break; /* => 0.5 MB */
259
260 case (FLASH_WORD_SIZE)AMD_ID_LV400B:
261 info->flash_id += FLASH_AM400B;
262 info->sector_count = 11;
263 info->size = 0x00080000;
264 break; /* => 0.5 MB */
265
266 case (FLASH_WORD_SIZE)AMD_ID_LV800T:
267 info->flash_id += FLASH_AM800T;
268 info->sector_count = 19;
269 info->size = 0x00100000;
270 break; /* => 1 MB */
271
272 case (FLASH_WORD_SIZE)AMD_ID_LV800B:
273 info->flash_id += FLASH_AM800B;
274 info->sector_count = 19;
275 info->size = 0x00100000;
276 break; /* => 1 MB */
277
278 case (FLASH_WORD_SIZE)AMD_ID_LV160T:
279 info->flash_id += FLASH_AM160T;
280 info->sector_count = 35;
281 info->size = 0x00200000;
282 break; /* => 2 MB */
283
284 case (FLASH_WORD_SIZE)AMD_ID_LV160B:
285 info->flash_id += FLASH_AM160B;
286 info->sector_count = 35;
287 info->size = 0x00200000;
288 break; /* => 2 MB */
289
290 case (FLASH_WORD_SIZE)AMD_ID_LV033C:
291 info->flash_id += FLASH_AMDLV033C;
292 info->sector_count = 64;
293 info->size = 0x00400000;
294 break; /* => 4 MB */
295
296 case (FLASH_WORD_SIZE)AMD_ID_LV065D:
297 info->flash_id += FLASH_AMDLV065D;
298 info->sector_count = 128;
299 info->size = 0x00800000;
300 break; /* => 8 MB */
301
302 case (FLASH_WORD_SIZE)AMD_ID_LV320T:
303 info->flash_id += FLASH_AM320T;
304 info->sector_count = 67;
305 info->size = 0x00400000;
306 break; /* => 4 MB */
307
308 case (FLASH_WORD_SIZE)AMD_ID_LV320B:
309 info->flash_id += FLASH_AM320B;
310 info->sector_count = 67;
311 info->size = 0x00400000;
312 break; /* => 4 MB */
313
314 case (FLASH_WORD_SIZE)SST_ID_xF800A:
315 info->flash_id += FLASH_SST800A;
316 info->sector_count = 16;
317 info->size = 0x00100000;
318 break; /* => 1 MB */
319
320 case (FLASH_WORD_SIZE)SST_ID_xF160A:
321 info->flash_id += FLASH_SST160A;
322 info->sector_count = 32;
323 info->size = 0x00200000;
324 break; /* => 2 MB */
325 case (FLASH_WORD_SIZE)SST_ID_xF040:
326 info->flash_id += FLASH_SST040;
327 info->sector_count = 128;
328 info->size = 0x00080000;
329 break; /* => 512KB */
330
331 default:
332 info->flash_id = FLASH_UNKNOWN;
333 return (0); /* => no or unknown flash */
334
335 }
336
337 /* set up sector start address table */
945af8d7 338 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
d1cbe85b
WD		 339 (info->flash_id == FLASH_AM040) ||
340 (info->flash_id == FLASH_AMDLV033C) ||
341 (info->flash_id == FLASH_AMDLV065D)) {
342 ulong sectsize = info->size / info->sector_count;
343 for (i = 0; i < info->sector_count; i++)
344 info->start[i] = base + (i * sectsize);
945af8d7 345 } else {
d1cbe85b
WD		 346 if (info->flash_id & FLASH_BTYPE) {
347 /* set sector offsets for bottom boot block type */
348 info->start[0] = base + 0x00000000;
349 info->start[1] = base + 0x00004000;
350 info->start[2] = base + 0x00006000;
351 info->start[3] = base + 0x00008000;
352 for (i = 4; i < info->sector_count; i++) {
353 info->start[i] = base + (i * 0x00010000) - 0x00030000;
354 }
355 } else {
356 /* set sector offsets for top boot block type */
357 i = info->sector_count - 1;
358 info->start[i--] = base + info->size - 0x00004000;
359 info->start[i--] = base + info->size - 0x00006000;
360 info->start[i--] = base + info->size - 0x00008000;
361 for (; i >= 0; i--) {
362 info->start[i] = base + i * 0x00010000;
363 }
364 }
365 }
366
367 /* check for protected sectors */
368 for (i = 0; i < info->sector_count; i++) {
369 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
370 /* D0 = 1 if protected */
371
372 addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
945af8d7 373 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
d1cbe85b 374 info->protect[i] = 0;
945af8d7 375 else
d1cbe85b
WD		 376 info->protect[i] = addr2[2] & 1;
377 }
378
379 /* switch to the read mode */
380 if (info->flash_id != FLASH_UNKNOWN) {
381 addr2 = (FLASH_WORD_SIZE *)info->start[0];
382 *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
383 }
384
385 return (info->size);
386}
387
388/*-----------------------------------------------------------------------
389 */
390
391int flash_erase (flash_info_t *info, int s_first, int s_last)
392{
393 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
394 volatile FLASH_WORD_SIZE *addr2;
395 int flag, prot, sect;
396 ulong start, now, last;
397
398 if ((s_first < 0) || (s_first > s_last)) {
399 if (info->flash_id == FLASH_UNKNOWN) {
400 printf ("- missing\n");
401 } else {
402 printf ("- no sectors to erase\n");
403 }
404 return 1;
405 }
406
407 if (info->flash_id == FLASH_UNKNOWN) {
408 printf ("Can't erase unknown flash type - aborted\n");
409 return 1;
410 }
411
412 prot = 0;
413 for (sect=s_first; sect<=s_last; ++sect) {
414 if (info->protect[sect]) {
415 prot++;
416 }
417 }
418
419 if (prot) {
420 printf ("- Warning: %d protected sectors will not be erased!\n",
421 prot);
422 } else {
423 printf ("\n");
424 }
425
426 start = get_timer (0);
427 last = start;
428 /* Start erase on unprotected sectors */
429 for (sect = s_first; sect <= s_last; sect++) {
430 if (info->protect[sect] == 0) { /* not protected */
431 addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
432
433 /* Disable interrupts which might cause a timeout here */
434 flag = disable_interrupts();
435
436 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
437 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
438 addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
439 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
440 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
441 addr2[0] = (FLASH_WORD_SIZE)0x00300030;
442
443 /* re-enable interrupts if necessary */
444 if (flag)
445 enable_interrupts();
446
447 /* wait at least 80us - let's wait 1 ms */
448 udelay (1000);
449
450 while ((addr2[0] & 0x00800080) !=
451 (FLASH_WORD_SIZE) 0x00800080) {
452 if ((now=get_timer(start)) >
6d0f6bcf 453 CONFIG_SYS_FLASH_ERASE_TOUT) {
d1cbe85b
WD		 454 printf ("Timeout\n");
455 addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
456 return 1;
457 }
458
459 /* show that we're waiting */
460 if ((now - last) > 1000) { /* every second */
461 putc ('.');
462 last = now;
463 }
464 }
465
466 addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
467 }
468 }
469
470 printf (" done\n");
471
472 return 0;
473}
474
475/*-----------------------------------------------------------------------
476 * Copy memory to flash, returns:
477 * 0 - OK
478 * 1 - write timeout
479 * 2 - Flash not erased
480 */
481
482int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
483{
484 ulong cp, wp, data;
485 int i, l, rc;
486
487 wp = (addr & ~3); /* get lower word aligned address */
488
489 /*
490 * handle unaligned start bytes
491 */
492 if ((l = addr - wp) != 0) {
493 data = 0;
494 for (i=0, cp=wp; i<l; ++i, ++cp) {
495 data = (data << 8) | (*(uchar *)cp);
496 }
497 for (; i<4 && cnt>0; ++i) {
498 data = (data << 8) | *src++;
499 --cnt;
500 ++cp;
501 }
502 for (; cnt==0 && i<4; ++i, ++cp) {
503 data = (data << 8) | (*(uchar *)cp);
504 }
505
506 if ((rc = write_word(info, wp, data)) != 0) {
507 return (rc);
508 }
509 wp += 4;
510 }
511
512 /*
513 * handle word aligned part
514 */
515 while (cnt >= 4) {
516 data = 0;
517 for (i=0; i<4; ++i) {
518 data = (data << 8) | *src++;
519 }
520 if ((rc = write_word(info, wp, data)) != 0) {
521 return (rc);
522 }
523 wp += 4;
524 cnt -= 4;
525 }
526
527 if (cnt == 0) {
528 return (0);
529 }
530
531 /*
532 * handle unaligned tail bytes
533 */
534 data = 0;
535 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
536 data = (data << 8) | *src++;
537 --cnt;
538 }
539 for (; i<4; ++i, ++cp) {
540 data = (data << 8) | (*(uchar *)cp);
541 }
542
543 return (write_word(info, wp, data));
544}
545
546/*-----------------------------------------------------------------------
547 * Write a word to Flash, returns:
548 * 0 - OK
549 * 1 - write timeout
550 * 2 - Flash not erased
551 */
552static int write_word (flash_info_t *info, ulong dest, ulong data)
553{
945af8d7
WD		 554 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]);
555 volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest;
556 volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
d1cbe85b
WD		 557 ulong start;
558 int flag;
945af8d7 559 int i;
d1cbe85b
WD		 560
561 /* Check if Flash is (sufficiently) erased */
562 if ((*((volatile ulong *)dest) & data) != data) {
563 printf("dest = %08lx, *dest = %08lx, data = %08lx\n",
564 dest, *(volatile ulong *)dest, data);
565 return 2;
566 }
567
945af8d7 568 for (i=0; i < 4/sizeof(FLASH_WORD_SIZE); i++) {
d1cbe85b
WD		 569 /* Disable interrupts which might cause a timeout here */
570 flag = disable_interrupts();
571
572 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
573 addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
574 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0;
575 dest2[i] = data2[i];
576
577 /* re-enable interrupts if necessary */
578 if (flag)
579 enable_interrupts();
580
581 /* data polling for D7 */
582 start = get_timer (0);
583 while ((dest2[i] & 0x00800080) != (data2[i] & 0x00800080)) {
6d0f6bcf 584 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
d1cbe85b
WD		 585 addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
586 return (1);
587 }
588 }
589 }
590
591 addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
592
593 return (0);
594}
595
596/*-----------------------------------------------------------------------
597 */
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