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wdenk756f5862005-04-03 15:51:42 +00001/*
2 * (C) Copyright 2004
3 * Yusdi Santoso, Adaptec Inc., yusdi_santoso@adaptec.com
4 *
5 * (C) Copyright 2000-2005
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
wdenk756f5862005-04-03 15:51:42 +00009 */
10
11#include <common.h>
12#include <mpc824x.h>
13#include <asm/processor.h>
14#include <asm/pci_io.h>
15#include <w83c553f.h>
16
17#define ROM_CS0_START 0xFF800000
18#define ROM_CS1_START 0xFF000000
19
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020020flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenk756f5862005-04-03 15:51:42 +000021
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +020022#if defined(CONFIG_ENV_IS_IN_FLASH)
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020023# ifndef CONFIG_ENV_ADDR
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020024# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
wdenk756f5862005-04-03 15:51:42 +000025# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020026# ifndef CONFIG_ENV_SIZE
27# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
wdenk756f5862005-04-03 15:51:42 +000028# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020029# ifndef CONFIG_ENV_SECT_SIZE
30# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
wdenk756f5862005-04-03 15:51:42 +000031# endif
32#endif
33
34/*-----------------------------------------------------------------------
35 * Functions
36 */
37static int write_word (flash_info_t *info, ulong dest, ulong data);
38
39/*flash command address offsets*/
40
41#define ADDR0 (0xAAA)
42#define ADDR1 (0x555)
43#define ADDR3 (0x001)
44
45#define FLASH_WORD_SIZE unsigned char
46
47/*-----------------------------------------------------------------------
48 */
49
50static unsigned long flash_id (unsigned char mfct, unsigned char chip)
51 __attribute__ ((const));
52
53typedef struct {
54 FLASH_WORD_SIZE extval;
55 unsigned short intval;
56} map_entry;
57
58static unsigned long flash_id (unsigned char mfct, unsigned char chip)
59{
60 static const map_entry mfct_map[] = {
61 {(FLASH_WORD_SIZE) AMD_MANUFACT,
62 (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)},
63 {(FLASH_WORD_SIZE) FUJ_MANUFACT,
64 (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)},
65 {(FLASH_WORD_SIZE) STM_MANUFACT,
66 (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)},
67 {(FLASH_WORD_SIZE) MT_MANUFACT,
68 (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)},
69 {(FLASH_WORD_SIZE) INTEL_MANUFACT,
70 (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)},
71 {(FLASH_WORD_SIZE) INTEL_ALT_MANU,
72 (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}
73 };
74
75 static const map_entry chip_map[] = {
76 {AMD_ID_F040B, FLASH_AM040},
77 {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB}
78 };
79
80 const map_entry *p;
81 unsigned long result = FLASH_UNKNOWN;
82
83 /* find chip id */
84 for (p = &chip_map[0];
85 p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++)
86 if (p->extval == chip) {
87 result = FLASH_VENDMASK | p->intval;
88 break;
89 }
90
91 /* find vendor id */
92 for (p = &mfct_map[0];
93 p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++)
94 if (p->extval == mfct) {
95 result &= ~FLASH_VENDMASK;
96 result |= (unsigned long) p->intval << 16;
97 break;
98 }
99
100 return result;
101}
102
103unsigned long flash_init (void)
104{
105 unsigned long i;
106 unsigned char j;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200107 static const ulong flash_banks[] = CONFIG_SYS_FLASH_BANKS;
wdenk756f5862005-04-03 15:51:42 +0000108
109 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200110 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
wdenk756f5862005-04-03 15:51:42 +0000111 flash_info_t *const pflinfo = &flash_info[i];
112
113 pflinfo->flash_id = FLASH_UNKNOWN;
114 pflinfo->size = 0;
115 pflinfo->sector_count = 0;
116 }
117
118 /* Enable writes to Hidden Dragon flash */
119 {
120 register unsigned char temp;
121
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200122 CONFIG_READ_BYTE (CONFIG_SYS_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR,
wdenk756f5862005-04-03 15:51:42 +0000123 temp);
124 temp &= ~0x20; /* clear BIOSWP bit */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200125 CONFIG_WRITE_BYTE (CONFIG_SYS_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR,
wdenk756f5862005-04-03 15:51:42 +0000126 temp);
127 }
128
129 for (i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++) {
130 flash_info_t *const pflinfo = &flash_info[i];
131 const unsigned long base_address = flash_banks[i];
132 volatile FLASH_WORD_SIZE *const flash =
133 (FLASH_WORD_SIZE *) base_address;
134
135 flash[0xAAA << (3 * i)] = 0xaa;
136 flash[0x555 << (3 * i)] = 0x55;
137 flash[0xAAA << (3 * i)] = 0x90;
138 __asm__ __volatile__ ("sync");
139
140 pflinfo->flash_id =
141 flash_id (flash[0x0], flash[0x2 + 14 * i]);
142
143 switch (pflinfo->flash_id & FLASH_TYPEMASK) {
144 case FLASH_AM040:
145 pflinfo->size = 0x00080000;
146 pflinfo->sector_count = 8;
147 for (j = 0; j < 8; j++) {
148 pflinfo->start[j] =
149 base_address + 0x00010000 * j;
150 pflinfo->protect[j] = flash[(j << 16) | 0x2];
151 }
152 break;
153 case FLASH_STM800AB:
154 pflinfo->size = 0x00100000;
155 pflinfo->sector_count = 19;
156 pflinfo->start[0] = base_address;
157 pflinfo->start[1] = base_address + 0x4000;
158 pflinfo->start[2] = base_address + 0x6000;
159 pflinfo->start[3] = base_address + 0x8000;
160 for (j = 1; j < 16; j++) {
161 pflinfo->start[j + 3] =
162 base_address + 0x00010000 * j;
163 }
164 break;
165 default:
166 /* The chip used is not listed in flash_id
167 TODO: Change this to explicitly detect the flash type
168 */
169 {
170 int sector_addr = base_address;
171
172 pflinfo->size = 0x00200000;
173 pflinfo->sector_count = 35;
174 pflinfo->start[0] = sector_addr;
175 sector_addr += 0x4000; /* 16K */
176 pflinfo->start[1] = sector_addr;
177 sector_addr += 0x2000; /* 8K */
178 pflinfo->start[2] = sector_addr;
179 sector_addr += 0x2000; /* 8K */
180 pflinfo->start[3] = sector_addr;
181 sector_addr += 0x8000; /* 32K */
182
183 for (j = 4; j < 35; j++) {
184 pflinfo->start[j] = sector_addr;
185 sector_addr += 0x10000; /* 64K */
186 }
187 }
188 break;
189 }
190 /* Protect monitor and environment sectors
191 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200192#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
wdenk756f5862005-04-03 15:51:42 +0000193 flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200194 CONFIG_SYS_MONITOR_BASE,
195 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
wdenk756f5862005-04-03 15:51:42 +0000196 &flash_info[0]);
197#endif
198
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200199#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
wdenk756f5862005-04-03 15:51:42 +0000200 flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200201 CONFIG_ENV_ADDR,
202 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
wdenk756f5862005-04-03 15:51:42 +0000203 &flash_info[0]);
204#endif
205
206 /* reset device to read mode */
207 flash[0x0000] = 0xf0;
208 __asm__ __volatile__ ("sync");
209 }
210
211 /* only have 1 bank */
212 return flash_info[0].size;
213}
214
215/*-----------------------------------------------------------------------
216 */
217void flash_print_info (flash_info_t * info)
218{
219 static const char unk[] = "Unknown";
220 const char *mfct = unk, *type = unk;
221 unsigned int i;
222
223 if (info->flash_id != FLASH_UNKNOWN) {
224 switch (info->flash_id & FLASH_VENDMASK) {
225 case FLASH_MAN_AMD:
226 mfct = "AMD";
227 break;
228 case FLASH_MAN_FUJ:
229 mfct = "FUJITSU";
230 break;
231 case FLASH_MAN_STM:
232 mfct = "STM";
233 break;
234 case FLASH_MAN_SST:
235 mfct = "SST";
236 break;
237 case FLASH_MAN_BM:
238 mfct = "Bright Microelectonics";
239 break;
240 case FLASH_MAN_INTEL:
241 mfct = "Intel";
242 break;
243 }
244
245 switch (info->flash_id & FLASH_TYPEMASK) {
246 case FLASH_AM040:
247 type = "AM29F040B (512K * 8, uniform sector size)";
248 break;
249 case FLASH_AM400B:
250 type = "AM29LV400B (4 Mbit, bottom boot sect)";
251 break;
252 case FLASH_AM400T:
253 type = "AM29LV400T (4 Mbit, top boot sector)";
254 break;
255 case FLASH_AM800B:
256 type = "AM29LV800B (8 Mbit, bottom boot sect)";
257 break;
258 case FLASH_AM800T:
259 type = "AM29LV800T (8 Mbit, top boot sector)";
260 break;
261 case FLASH_AM160T:
262 type = "AM29LV160T (16 Mbit, top boot sector)";
263 break;
264 case FLASH_AM320B:
265 type = "AM29LV320B (32 Mbit, bottom boot sect)";
266 break;
267 case FLASH_AM320T:
268 type = "AM29LV320T (32 Mbit, top boot sector)";
269 break;
270 case FLASH_STM800AB:
271 type = "M29W800AB (8 Mbit, bottom boot sect)";
272 break;
273 case FLASH_SST800A:
274 type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
275 break;
276 case FLASH_SST160A:
277 type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
278 break;
279 }
280 }
281
282 printf ("\n Brand: %s Type: %s\n"
283 " Size: %lu KB in %d Sectors\n",
284 mfct, type, info->size >> 10, info->sector_count);
285
286 printf (" Sector Start Addresses:");
287
288 for (i = 0; i < info->sector_count; i++) {
289 unsigned long size;
290 unsigned int erased;
291 unsigned long *flash = (unsigned long *) info->start[i];
292
293 /*
294 * Check if whole sector is erased
295 */
296 size = (i != (info->sector_count - 1)) ?
297 (info->start[i + 1] - info->start[i]) >> 2 :
298 (info->start[0] + info->size - info->start[i]) >> 2;
299
300 for (flash = (unsigned long *) info->start[i], erased = 1;
301 (flash != (unsigned long *) info->start[i] + size)
302 && erased; flash++)
303 erased = *flash == ~0x0UL;
304
305 printf ("%s %08lX %s %s",
306 (i % 5) ? "" : "\n ",
307 info->start[i],
308 erased ? "E" : " ", info->protect[i] ? "RO" : " ");
309 }
310
311 puts ("\n");
312 return;
313}
314
315int flash_erase (flash_info_t * info, int s_first, int s_last)
316{
317 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
318 int flag, prot, sect, l_sect;
319 ulong start, now, last;
320 unsigned char sh8b;
321
322 if ((s_first < 0) || (s_first > s_last)) {
323 if (info->flash_id == FLASH_UNKNOWN) {
324 printf ("- missing\n");
325 } else {
326 printf ("- no sectors to erase\n");
327 }
328 return 1;
329 }
330
331 if ((info->flash_id == FLASH_UNKNOWN) ||
332 (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) {
333 printf ("Can't erase unknown flash type - aborted\n");
334 return 1;
335 }
336
337 prot = 0;
338 for (sect = s_first; sect <= s_last; ++sect) {
339 if (info->protect[sect]) {
340 prot++;
341 }
342 }
343
344 if (prot) {
345 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
346 } else {
347 printf ("\n");
348 }
349
350 l_sect = -1;
351
352 /* Check the ROM CS */
353 if ((info->start[0] >= ROM_CS1_START)
354 && (info->start[0] < ROM_CS0_START))
355 sh8b = 3;
356 else
357 sh8b = 0;
358
359 /* Disable interrupts which might cause a timeout here */
360 flag = disable_interrupts ();
361
362 addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
363 addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
364 addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
365 addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
366 addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
367
368 /* Start erase on unprotected sectors */
369 for (sect = s_first; sect <= s_last; sect++) {
370 if (info->protect[sect] == 0) { /* not protected */
371 addr = (FLASH_WORD_SIZE *) (info->start[0] +
372 ((info->start[sect] -
373 info->start[0]) << sh8b));
374 if (info->flash_id & FLASH_MAN_SST) {
375 addr[ADDR0 << sh8b] =
376 (FLASH_WORD_SIZE) 0x00AA00AA;
377 addr[ADDR1 << sh8b] =
378 (FLASH_WORD_SIZE) 0x00550055;
379 addr[ADDR0 << sh8b] =
380 (FLASH_WORD_SIZE) 0x00800080;
381 addr[ADDR0 << sh8b] =
382 (FLASH_WORD_SIZE) 0x00AA00AA;
383 addr[ADDR1 << sh8b] =
384 (FLASH_WORD_SIZE) 0x00550055;
385 addr[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
386 udelay (30000); /* wait 30 ms */
387 } else
388 addr[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
389 l_sect = sect;
390 }
391 }
392
393 /* re-enable interrupts if necessary */
394 if (flag)
395 enable_interrupts ();
396
397 /* wait at least 80us - let's wait 1 ms */
398 udelay (1000);
399
400 /*
401 * We wait for the last triggered sector
402 */
403 if (l_sect < 0)
404 goto DONE;
405
406 start = get_timer (0);
407 last = start;
408 addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] -
409 info->
410 start[0]) << sh8b));
411 while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
412 (FLASH_WORD_SIZE) 0x00800080) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200413 if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk756f5862005-04-03 15:51:42 +0000414 printf ("Timeout\n");
415 return 1;
416 }
417 /* show that we're waiting */
418 if ((now - last) > 1000) { /* every second */
419 serial_putc ('.');
420 last = now;
421 }
422 }
423
424 DONE:
425 /* reset to read mode */
426 addr = (FLASH_WORD_SIZE *) info->start[0];
427 addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
428
429 printf (" done\n");
430 return 0;
431}
432
433/*-----------------------------------------------------------------------
434 * Copy memory to flash, returns:
435 * 0 - OK
436 * 1 - write timeout
437 * 2 - Flash not erased
438 */
439
440int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
441{
442 ulong cp, wp, data;
443 int i, l, rc;
444
445 wp = (addr & ~3); /* get lower word aligned address */
446
447 /*
448 * handle unaligned start bytes
449 */
450 if ((l = addr - wp) != 0) {
451 data = 0;
452 for (i = 0, cp = wp; i < l; ++i, ++cp) {
453 data = (data << 8) | (*(uchar *) cp);
454 }
455 for (; i < 4 && cnt > 0; ++i) {
456 data = (data << 8) | *src++;
457 --cnt;
458 ++cp;
459 }
460 for (; cnt == 0 && i < 4; ++i, ++cp) {
461 data = (data << 8) | (*(uchar *) cp);
462 }
463
464 if ((rc = write_word (info, wp, data)) != 0) {
465 return (rc);
466 }
467 wp += 4;
468 }
469
470 /*
471 * handle word aligned part
472 */
473 while (cnt >= 4) {
474 data = 0;
475 for (i = 0; i < 4; ++i) {
476 data = (data << 8) | *src++;
477 }
478 if ((rc = write_word (info, wp, data)) != 0) {
479 return (rc);
480 }
481 wp += 4;
482 cnt -= 4;
483 }
484
485 if (cnt == 0) {
486 return (0);
487 }
488
489 /*
490 * handle unaligned tail bytes
491 */
492 data = 0;
493 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
494 data = (data << 8) | *src++;
495 --cnt;
496 }
497 for (; i < 4; ++i, ++cp) {
498 data = (data << 8) | (*(uchar *) cp);
499 }
500
501 return (write_word (info, wp, data));
502}
503
504/*-----------------------------------------------------------------------
505 * Write a word to Flash, returns:
506 * 0 - OK
507 * 1 - write timeout
508 * 2 - Flash not erased
509 */
510static int write_word (flash_info_t * info, ulong dest, ulong data)
511{
512 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) info->start[0];
513 volatile FLASH_WORD_SIZE *dest2;
514 volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
515 ulong start;
516 int flag;
517 int i;
518 unsigned char sh8b;
519
520 /* Check the ROM CS */
521 if ((info->start[0] >= ROM_CS1_START)
522 && (info->start[0] < ROM_CS0_START))
523 sh8b = 3;
524 else
525 sh8b = 0;
526
527 dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) +
528 info->start[0]);
529
530 /* Check if Flash is (sufficiently) erased */
531 if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
532 return (2);
533 }
534 /* Disable interrupts which might cause a timeout here */
535 flag = disable_interrupts ();
536
537 for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
538 addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
539 addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
540 addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0;
541
542 dest2[i << sh8b] = data2[i];
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 ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) !=
551 (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200552 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk756f5862005-04-03 15:51:42 +0000553 return (1);
554 }
555 }
556 }
557
558 return (0);
559}