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[u-boot/qq2440-u-boot.git] / board / mvblue / flash.c
blob5dd658ff8a503c05343aaa208c0e330e014cc7d2
1 /*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 * (C) Copyright 2001-2003
5 *
6 * Changes for MATRIX Vision mvBLUE devices
7 * MATRIX Vision GmbH / hg,as info@matrix-vision.de
8 *
9 * SPDX-License-Identifier: GPL-2.0+
10 */
11
12 #include <common.h>
13 #include <mpc824x.h>
14
15 #if 0
16 #define mvdebug(p) printf ##p
17 #else
18 #define mvdebug(p)
19 #endif
20
21 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
22
23 #define FLASH_BUS_WIDTH 8
24
25 #if (FLASH_BUS_WIDTH==32)
26 #define FLASH_DATA_MASK 0xffffffff
27 #define FLASH_SHIFT 1
28 #define FDT vu_long
29 #elif (FLASH_BUS_WIDTH==16)
30 #define FLASH_DATA_MASK 0xff
31 #define FLASH_SHIFT 0
32 #define FDT vu_short
33 #elif (FLASH_BUS_WIDTH==8)
34 #define FLASH_DATA_MASK 0xff
35 #define FLASH_SHIFT 0
36 #define FDT vu_char
37 #else
38 #error FLASH_BUS_WIDTH undefined
39 #endif
40
41 /*-----------------------------------------------------------------------
42 * Functions
43 */
44 static ulong flash_get_size (vu_long *address, 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 unsigned long flash_init (void)
51 {
52 unsigned long size_b0;
53 int i;
54
55 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
56 flash_info[i].flash_id = FLASH_UNKNOWN;
57 }
58
59 size_b0 = flash_get_size((vu_long *)0xffc00000, &flash_info[0]);
60
61 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
62 printf ("## Unknown FLASH : Size = 0x%08lx = %ld MB\n",
63 size_b0, size_b0<<20);
64 }
65
66 flash_get_offsets (0xffc00000, &flash_info[0]);
67 flash_info[0].size = size_b0;
68
69 /* monitor protection OFF by default */
70 flash_protect ( FLAG_PROTECT_CLEAR, 0xffc00000, 0x2000, flash_info );
71
72 return size_b0;
73 }
74
75 /*-----------------------------------------------------------------------
76 */
77 static void flash_get_offsets (ulong base, flash_info_t *info)
78 {
79 int i;
80
81 /* set up sector start address table */
82 if (info->flash_id & FLASH_BTYPE)
83 { /* bottom boot sector types - these are the useful ones! */
84 /* set sector offsets for bottom boot block type */
85 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B)
86 { /* AMDLV320B has 8 x 8k bottom boot sectors */
87 for (i = 0; i < 8; i++) /* +8k */
88 info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
89 for (; i < info->sector_count; i++) /* +64k */
90 info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00070000 << FLASH_SHIFT);
91 }
92 else
93 { /* other types have 4 bottom boot sectors (16,8,8,32) */
94 i = 0;
95 info->start[i++] = base + 0x00000000; /* - */
96 info->start[i++] = base + (0x00004000 << FLASH_SHIFT); /* +16k */
97 info->start[i++] = base + (0x00006000 << FLASH_SHIFT); /* +8k */
98 info->start[i++] = base + (0x00008000 << FLASH_SHIFT); /* +8k */
99 info->start[i++] = base + (0x00010000 << FLASH_SHIFT); /* +32k */
100 for (; i < info->sector_count; i++) /* +64k */
101 info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00030000 << FLASH_SHIFT);
102 }
103 }
104 else
105 { /* top boot sector types - not so useful */
106 /* set sector offsets for top boot block type */
107 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T)
108 { /* AMDLV320T has 8 x 8k top boot sectors */
109 for (i = 0; i < info->sector_count - 8; i++) /* +64k */
110 info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
111 for (; i < info->sector_count; i++) /* +8k */
112 info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
113 }
114 else
115 { /* other types have 4 top boot sectors (32,8,8,16) */
116 for (i = 0; i < info->sector_count - 4; i++) /* +64k */
117 info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
118
119 info->start[i++] = base + info->size - (0x00010000 << FLASH_SHIFT); /* -32k */
120 info->start[i++] = base + info->size - (0x00008000 << FLASH_SHIFT); /* -8k */
121 info->start[i++] = base + info->size - (0x00006000 << FLASH_SHIFT); /* -8k */
122 info->start[i] = base + info->size - (0x00004000 << FLASH_SHIFT); /* -16k */
123 }
124 }
125 }
126
127 /*-----------------------------------------------------------------------
128 */
129 void flash_print_info (flash_info_t *info)
130 {
131 int i;
132
133 if (info->flash_id == FLASH_UNKNOWN) {
134 printf ("missing or unknown FLASH type\n");
135 return;
136 }
137
138 switch (info->flash_id & FLASH_VENDMASK) {
139 case FLASH_MAN_AMD: printf ("AMD "); break;
140 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
141 case FLASH_MAN_STM: printf ("ST "); break;
142 default: printf ("Unknown Vendor "); break;
143 }
144
145 switch (info->flash_id & FLASH_TYPEMASK) {
146 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
147 break;
148 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
149 break;
150 case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
151 break;
152 case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
153 break;
154 case FLASH_STMW320DB: printf ("M29W320B (32 Mbit, bottom boot sect)\n");
155 break;
156 case FLASH_STMW320DT: printf ("M29W320T (32 Mbit, top boot sector)\n");
157 break;
158 default: printf ("Unknown Chip Type\n");
159 break;
160 }
161
162 printf (" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count);
163
164 printf (" Sector Start Addresses:");
165 for (i=0; i<info->sector_count; ++i) {
166 if ((i % 5) == 0)
167 printf ("\n ");
168 printf (" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " ");
169 }
170 printf ("\n");
171 }
172
173 /*
174 * The following code cannot be run from FLASH!
175 */
176
177 #define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK)
178 #define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK)
179 #define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK)
180 #define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK)
181 #define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK)
182 #define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK)
183 #define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK)
184 #define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK)
185 #define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK)
186
187 #if (FLASH_BUS_WIDTH >= 16)
188 #define AUTOSELECT_ADDR1 0x0555
189 #define AUTOSELECT_ADDR2 0x02AA
190 #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
191 #else
192 #define AUTOSELECT_ADDR1 0x0AAA
193 #define AUTOSELECT_ADDR2 0x0555
194 #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
195 #endif
196
197 #define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
198 #define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK)
199 #define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK)
200
201 #define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK)
202
203
204 static ulong flash_get_size (vu_long *address, flash_info_t *info)
205 {
206 short i;
207 FDT value;
208 FDT *addr = (FDT *)address;
209
210 ulong base = (ulong)address;
211 addr[AUTOSELECT_ADDR1] = AUTOSELECT_DATA1;
212 addr[AUTOSELECT_ADDR2] = AUTOSELECT_DATA2;
213 addr[AUTOSELECT_ADDR3] = AUTOSELECT_DATA3;
214 __asm__ __volatile__("sync");
215
216 udelay(180);
217
218 value = addr[0]; /* manufacturer ID */
219 switch (value) {
220 case AMD_MANUFACT_MVS:
221 info->flash_id = FLASH_MAN_AMD;
222 break;
223 case FUJ_MANUFACT_MVS:
224 info->flash_id = FLASH_MAN_FUJ;
225 break;
226 case STM_MANUFACT_MVS:
227 info->flash_id = FLASH_MAN_STM;
228 break;
229 default:
230 info->flash_id = FLASH_UNKNOWN;
231 info->sector_count = 0;
232 info->size = 0;
233 return (0); /* no or unknown flash */
234 }
235 #if (FLASH_BUS_WIDTH >= 16)
236 value = addr[1]; /* device ID */
237 #else
238 value = addr[2]; /* device ID */
239 #endif
240
241 switch (value) {
242 case AMD_ID_LV160T_MVS:
243 info->flash_id += FLASH_AM160T;
244 info->sector_count = 37;
245 info->size = (0x00200000 << FLASH_SHIFT);
246 break; /* => 2 or 4 MB */
247
248 case AMD_ID_LV160B_MVS:
249 info->flash_id += FLASH_AM160B;
250 info->sector_count = 37;
251 info->size = (0x00200000 << FLASH_SHIFT);
252 break; /* => 2 or 4 MB */
253
254 case AMD_ID_LV320T_MVS:
255 info->flash_id += FLASH_AM320T;
256 info->sector_count = 71;
257 info->size = (0x00400000 << FLASH_SHIFT);
258 break; /* => 4 or 8 MB */
259
260 case AMD_ID_LV320B_MVS:
261 info->flash_id += FLASH_AM320B;
262 info->sector_count = 71;
263 info->size = (0x00400000 << FLASH_SHIFT);
264 break; /* => 4 or 8MB */
265
266 case STM_ID_W320DT_MVS:
267 info->flash_id += FLASH_STMW320DT;
268 info->sector_count = 67;
269 info->size = (0x00400000 << FLASH_SHIFT);
270 break; /* => 4 or 8 MB */
271
272 case STM_ID_W320DB_MVS:
273 info->flash_id += FLASH_STMW320DB;
274 info->sector_count = 67;
275 info->size = (0x00400000 << FLASH_SHIFT);
276 break; /* => 4 or 8MB */
277
278 default:
279 info->flash_id = FLASH_UNKNOWN;
280 return (0); /* => no or unknown flash */
281
282 }
283
284 /* set up sector start address table */
285 flash_get_offsets (base, info);
286
287 /* check for protected sectors */
288 for (i = 0; i < info->sector_count; i++) {
289 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
290 /* D0 = 1 if protected */
291 addr = (FDT *)(info->start[i]);
292 info->protect[i] = addr[2] & 1;
293 }
294
295 /*
296 * Prevent writes to uninitialized FLASH.
297 */
298 if (info->flash_id != FLASH_UNKNOWN) {
299 addr = (FDT *)info->start[0];
300 *addr = RESET_BANK_DATA; /* reset bank */
301 }
302 return (info->size);
303 }
304
305
306 /*-----------------------------------------------------------------------
307 */
308
309 #if (FLASH_BUS_WIDTH >= 16)
310 #define ERASE_ADDR1 0x0555
311 #define ERASE_ADDR2 0x02AA
312 #else
313 #define ERASE_ADDR1 0x0AAA
314 #define ERASE_ADDR2 0x0555
315 #endif
316
317 #define ERASE_ADDR3 ERASE_ADDR1
318 #define ERASE_ADDR4 ERASE_ADDR1
319 #define ERASE_ADDR5 ERASE_ADDR2
320
321 #define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
322 #define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK)
323 #define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK)
324 #define ERASE_DATA4 ERASE_DATA1
325 #define ERASE_DATA5 ERASE_DATA2
326
327 #define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK)
328 #define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK)
329 #define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK)
330
331 int flash_erase (flash_info_t *info, int s_first, int s_last)
332 {
333 FDT *addr = (FDT *)(info->start[0]);
334
335 int prot, sect, l_sect, flag;
336 ulong start, now, last;
337
338 __asm__ __volatile__ ("sync");
339 addr[0] = 0xf0;
340 udelay(1000);
341
342 printf("\nflash_erase: first = %d @ 0x%08lx\n", s_first, info->start[s_first] );
343 printf(" last = %d @ 0x%08lx\n", s_last , info->start[s_last ] );
344
345 if ((s_first < 0) || (s_first > s_last)) {
346 if (info->flash_id == FLASH_UNKNOWN) {
347 printf ("- missing\n");
348 } else {
349 printf ("- no sectors to erase\n");
350 }
351 return 1;
352 }
353
354 if ((info->flash_id == FLASH_UNKNOWN) || (info->flash_id > FLASH_AMD_COMP)) {
355 printf ("Can't erase unknown flash type %08lx - aborted\n", info->flash_id);
356 return 1;
357 }
358
359 prot = 0;
360 for (sect=s_first; sect<=s_last; ++sect) {
361 if (info->protect[sect]) {
362 prot++;
363 }
364 }
365
366 if (prot) {
367 printf ("- Warning: %d protected sectors will not be erased!\n",
368 prot);
369 } else {
370 printf ("\n");
371 }
372
373 l_sect = -1;
374
375 /* Disable interrupts which might cause a timeout here */
376 flag = disable_interrupts();
377
378 addr[ERASE_ADDR1] = ERASE_DATA1;
379 addr[ERASE_ADDR2] = ERASE_DATA2;
380 addr[ERASE_ADDR3] = ERASE_DATA3;
381 addr[ERASE_ADDR4] = ERASE_DATA4;
382 addr[ERASE_ADDR5] = ERASE_DATA5;
383
384 for (sect = s_first; sect <= s_last; sect++) {
385 if (info->protect[sect] == 0) {
386 addr = (FDT *)(info->start[sect]);
387 addr[0] = ERASE_SECTOR_DATA;
388 l_sect = sect;
389 }
390 }
391
392 if (flag)
393 enable_interrupts();
394
395 /*
396 * We wait for the last triggered sector
397 */
398 if (l_sect < 0)
399 goto DONE;
400
401 start = get_timer (0);
402 last = start;
403 addr = (FDT *)(info->start[l_sect]);
404
405 while ((addr[0] & ERASE_CONFIRM_DATA) != ERASE_CONFIRM_DATA) {
406 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
407 printf ("Timeout\n");
408 return 1;
409 }
410 /* show that we're waiting */
411 if ((now - last) > 1000) { /* every second */
412 putc ('.');
413 last = now;
414 }
415 }
416
417 DONE:
418 printf (" done\n");
419 return 0;
420 }
421
422 /*-----------------------------------------------------------------------
423 * Copy memory to flash, returns:
424 * 0 - OK
425 * 1 - write timeout
426 * 2 - Flash not erased
427 */
428
429 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
430 {
431 #define BUFF_INC 4
432 ulong cp, wp, data;
433 int i, l, rc;
434
435 mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src, addr, cnt));
436
437 wp = (addr & ~3); /* get lower word aligned address */
438 /*
439 * handle unaligned start bytes
440 */
441 if ((l = addr - wp) != 0) {
442 mvdebug ((" handle unaligned start bytes (cnt = 0x%08lx)\n", cnt));
443 data = 0;
444 for (i=0, cp=wp; i<l; ++i, ++cp) {
445 data = (data << 8) | (*(uchar *)cp);
446 }
447 for (; i<BUFF_INC && cnt>0; ++i) {
448 data = (data << 8) | *src++;
449 --cnt;
450 ++cp;
451 }
452 for (; cnt==0 && i<BUFF_INC; ++i, ++cp) {
453 data = (data << 8) | (*(uchar *)cp);
454 }
455
456 if ((rc = write_word(info, wp, data)) != 0) {
457 return (rc);
458 }
459 wp += BUFF_INC;
460 }
461
462 /*
463 * handle (half)word aligned part
464 */
465 mvdebug ((" handle word aligned part (cnt = 0x%08lx)\n", cnt));
466 while (cnt >= BUFF_INC) {
467 data = 0;
468 for (i=0; i<BUFF_INC; ++i) {
469 data = (data << 8) | *src++;
470 }
471 if ((rc = write_word(info, wp, data)) != 0) {
472 return (rc);
473 }
474 wp += BUFF_INC;
475 cnt -= BUFF_INC;
476 }
477
478 if (cnt == 0) {
479 return (0);
480 }
481
482 /*
483 * handle unaligned tail bytes
484 */
485 mvdebug ((" handle unaligned tail bytes (cnt = 0x%08lx)\n", cnt));
486 data = 0;
487 for (i=0, cp=wp; i<BUFF_INC && cnt>0; ++i, ++cp) {
488 data = (data << 8) | *src++;
489 --cnt;
490 }
491 for (; i<BUFF_INC; ++i, ++cp) {
492 data = (data << 8) | (*(uchar *)cp);
493 }
494
495 return (write_word(info, wp, data));
496 }
497
498 #if (FLASH_BUS_WIDTH >= 16)
499 #define WRITE_ADDR1 0x0555
500 #define WRITE_ADDR2 0x02AA
501 #else
502 #define WRITE_ADDR1 0x0AAA
503 #define WRITE_ADDR2 0x0555
504 #define WRITE_ADDR3 WRITE_ADDR1
505 #endif
506
507 #define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
508 #define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK)
509 #define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK)
510
511 #define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA
512
513 /*-----------------------------------------------------------------------
514 * Write a byte to Flash, returns:
515 * 0 - OK
516 * 1 - write timeout
517 * 2 - Flash not erased
518 */
519 static int write_char (flash_info_t *info, ulong dest, uchar data)
520 {
521 vu_char *addr = (vu_char *)(info->start[0]);
522 ulong start;
523 int flag;
524
525 /* Check if Flash is (sufficiently) erased */
526 if ((*((vu_char *)dest) & data) != data) {
527 printf(" *** ERROR: Flash not erased !\n");
528 return (2);
529 }
530 flag = disable_interrupts();
531
532 addr[WRITE_ADDR1] = WRITE_DATA1;
533 addr[WRITE_ADDR2] = WRITE_DATA2;
534 addr[WRITE_ADDR3] = WRITE_DATA3;
535 *((vu_char *)dest) = data;
536
537 if (flag)
538 enable_interrupts();
539
540 /* data polling for D7 */
541 start = get_timer (0);
542 addr = (vu_char *)dest;
543 while (( (*addr) & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) {
544 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
545 printf(" *** ERROR: Flash write timeout !");
546 return (1);
547 }
548 }
549 mvdebug (("-write_byte\n"));
550 return (0);
551 }
552
553 /*-----------------------------------------------------------------------
554 * Write a word to Flash, returns:
555 * 0 - OK
556 * 1 - write timeout
557 * 2 - Flash not erased
558 */
559 static int write_word (flash_info_t *info, ulong dest, ulong data)
560 {
561 int i,
562 result = 0;
563
564 mvdebug (("+write_word : 0x%08lx @ 0x%08lx\n", data, dest));
565 for ( i=0; (i < 4) && (result == 0); i++, dest+=1 )
566 result = write_char (info, dest, (data >> (8*(3-i))) & 0xff );
567 mvdebug (("-write_word\n"));
568 return result;
569 }
570 /*---------------------------------------------------------------- */
u-boot for qq2440