3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 * Wait for completion of each sector erase command issued
28 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
33 #include <asm/processor.h>
35 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
37 /*-----------------------------------------------------------------------
40 static ulong flash_get_size (vu_long *addr, flash_info_t *info);
41 static int write_word (flash_info_t *info, ulong dest, ulong data);
42 static void flash_get_offsets (ulong base, flash_info_t *info);
47 #define FLASH_WORD_SIZE unsigned char
53 #define FLASH_WORD_SIZE unsigned short
56 #ifdef CONFIG_WALNUT405
59 #define FLASH_WORD_SIZE unsigned char
62 #ifdef CONFIG_BUBINGA405EP
65 #define FLASH_WORD_SIZE unsigned char
69 /*-----------------------------------------------------------------------
72 unsigned long flash_init (void)
74 unsigned long size_b0, size_b1;
77 unsigned long base_b0, base_b1;
79 /* Init: no FLASHes known */
80 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
81 flash_info[i].flash_id = FLASH_UNKNOWN;
84 /* Static FLASH Bank configuration here - FIXME XXX */
86 size_b0 = flash_get_size ((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
88 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
89 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
90 size_b0, size_b0 << 20);
94 if (CFG_MAX_FLASH_BANKS == 1) {
96 flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
98 /* Monitor protection ON by default */
99 (void) flash_protect (FLAG_PROTECT_SET,
101 FLASH_BASE0_PRELIM + CFG_MONITOR_LEN - 1,
103 /* Also protect sector containing initial power-up instruction */
104 (void) flash_protect (FLAG_PROTECT_SET,
105 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);
107 flash_info[0].size = size_b0;
112 size_b1 = flash_get_size ((vu_long *) FLASH_BASE1_PRELIM, &flash_info[1]);
114 /* Re-do sizing to get full correct info */
117 mtdcr (ebccfga, pb0cr);
118 pbcr = mfdcr (ebccfgd);
119 mtdcr (ebccfga, pb0cr);
121 pbcr = (pbcr & 0x0001ffff) | base_b1 |
122 (((size_b1 / 1024 / 1024) - 1) << 17);
123 mtdcr (ebccfgd, pbcr);
124 /* printf("pb1cr = %x\n", pbcr); */
128 mtdcr (ebccfga, pb1cr);
129 pbcr = mfdcr (ebccfgd);
130 mtdcr (ebccfga, pb1cr);
131 base_b0 = base_b1 - size_b0;
132 pbcr = (pbcr & 0x0001ffff) | base_b0 |
133 (((size_b0 / 1024 / 1024) - 1) << 17);
134 mtdcr (ebccfgd, pbcr);
135 /* printf("pb0cr = %x\n", pbcr); */
138 size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]);
140 flash_get_offsets (base_b0, &flash_info[0]);
142 /* monitor protection ON by default */
143 (void) flash_protect (FLAG_PROTECT_SET,
144 base_b0 + size_b0 - CFG_MONITOR_LEN,
145 base_b0 + size_b0 - 1, &flash_info[0]);
146 /* Also protect sector containing initial power-up instruction */
147 /* (flash_protect() checks address range - other call ignored) */
148 (void) flash_protect (FLAG_PROTECT_SET,
149 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);
150 (void) flash_protect (FLAG_PROTECT_SET,
151 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]);
154 /* Re-do sizing to get full correct info */
155 size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
157 flash_get_offsets (base_b1, &flash_info[1]);
159 /* monitor protection ON by default */
160 (void) flash_protect (FLAG_PROTECT_SET,
161 base_b1 + size_b1 - CFG_MONITOR_LEN,
162 base_b1 + size_b1 - 1,
164 /* monitor protection OFF by default (one is enough) */
165 (void) flash_protect (FLAG_PROTECT_CLEAR,
166 base_b0 + size_b0 - CFG_MONITOR_LEN,
167 base_b0 + size_b0 - 1,
170 flash_info[1].flash_id = FLASH_UNKNOWN;
171 flash_info[1].sector_count = -1;
174 flash_info[0].size = size_b0;
175 flash_info[1].size = size_b1;
177 return (size_b0 + size_b1);
181 /*-----------------------------------------------------------------------
183 static void flash_get_offsets (ulong base, flash_info_t * info)
187 /* set up sector start address table */
188 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
189 (info->flash_id == FLASH_AM040)) {
190 for (i = 0; i < info->sector_count; i++)
191 info->start[i] = base + (i * 0x00010000);
193 if (info->flash_id & FLASH_BTYPE) {
194 /* set sector offsets for bottom boot block type */
195 info->start[0] = base + 0x00000000;
196 info->start[1] = base + 0x00004000;
197 info->start[2] = base + 0x00006000;
198 info->start[3] = base + 0x00008000;
199 for (i = 4; i < info->sector_count; i++) {
200 info->start[i] = base + (i * 0x00010000) - 0x00030000;
203 /* set sector offsets for top boot block type */
204 i = info->sector_count - 1;
205 info->start[i--] = base + info->size - 0x00004000;
206 info->start[i--] = base + info->size - 0x00006000;
207 info->start[i--] = base + info->size - 0x00008000;
208 for (; i >= 0; i--) {
209 info->start[i] = base + i * 0x00010000;
215 /*-----------------------------------------------------------------------
217 void flash_print_info (flash_info_t * info)
223 volatile unsigned long *flash;
225 if (info->flash_id == FLASH_UNKNOWN) {
226 printf ("missing or unknown FLASH type\n");
230 switch (info->flash_id & FLASH_VENDMASK) {
231 case FLASH_MAN_AMD: printf ("AMD "); break;
232 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
233 case FLASH_MAN_SST: printf ("SST "); break;
234 default: printf ("Unknown Vendor "); break;
237 switch (info->flash_id & FLASH_TYPEMASK) {
238 case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
240 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
242 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
244 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
246 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
248 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
250 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
252 case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
254 case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
256 case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
258 case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
260 default: printf ("Unknown Chip Type\n");
264 printf (" Size: %ld KB in %d Sectors\n",
265 info->size >> 10, info->sector_count);
267 printf (" Sector Start Addresses:");
268 for (i = 0; i < info->sector_count; ++i) {
270 * Check if whole sector is erased
272 if (i != (info->sector_count - 1))
273 size = info->start[i + 1] - info->start[i];
275 size = info->start[0] + info->size - info->start[i];
277 flash = (volatile unsigned long *) info->start[i];
278 size = size >> 2; /* divide by 4 for longword access */
279 for (k = 0; k < size; k++) {
280 if (*flash++ != 0xffffffff) {
288 #if 0 /* test-only */
290 info->start[i], info->protect[i] ? " (RO)" : " "
292 printf (" %08lX%s%s",
294 erased ? " E" : " ", info->protect[i] ? "RO " : " "
302 /*-----------------------------------------------------------------------
306 /*-----------------------------------------------------------------------
310 * The following code cannot be run from FLASH!
312 static ulong flash_get_size (vu_long * addr, flash_info_t * info)
315 FLASH_WORD_SIZE value;
316 ulong base = (ulong) addr;
317 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr;
319 /* Write auto select command: read Manufacturer ID */
320 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
321 addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
322 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090;
331 case (FLASH_WORD_SIZE) AMD_MANUFACT:
332 info->flash_id = FLASH_MAN_AMD;
334 case (FLASH_WORD_SIZE) FUJ_MANUFACT:
335 info->flash_id = FLASH_MAN_FUJ;
337 case (FLASH_WORD_SIZE) SST_MANUFACT:
338 info->flash_id = FLASH_MAN_SST;
341 info->flash_id = FLASH_UNKNOWN;
342 info->sector_count = 0;
344 return (0); /* no or unknown flash */
348 value = addr2[0]; /* device ID */
349 /* printf("\ndev_code=%x\n", value); */
351 value = addr2[1]; /* device ID */
355 case (FLASH_WORD_SIZE) AMD_ID_F040B:
356 info->flash_id += FLASH_AM040;
357 info->sector_count = 8;
358 info->size = 0x0080000; /* => 512 ko */
360 case (FLASH_WORD_SIZE) AMD_ID_LV400T:
361 info->flash_id += FLASH_AM400T;
362 info->sector_count = 11;
363 info->size = 0x00080000;
364 break; /* => 0.5 MB */
366 case (FLASH_WORD_SIZE) AMD_ID_LV400B:
367 info->flash_id += FLASH_AM400B;
368 info->sector_count = 11;
369 info->size = 0x00080000;
370 break; /* => 0.5 MB */
372 case (FLASH_WORD_SIZE) AMD_ID_LV800T:
373 info->flash_id += FLASH_AM800T;
374 info->sector_count = 19;
375 info->size = 0x00100000;
378 case (FLASH_WORD_SIZE) AMD_ID_LV800B:
379 info->flash_id += FLASH_AM800B;
380 info->sector_count = 19;
381 info->size = 0x00100000;
384 case (FLASH_WORD_SIZE) AMD_ID_LV160T:
385 info->flash_id += FLASH_AM160T;
386 info->sector_count = 35;
387 info->size = 0x00200000;
390 case (FLASH_WORD_SIZE) AMD_ID_LV160B:
391 info->flash_id += FLASH_AM160B;
392 info->sector_count = 35;
393 info->size = 0x00200000;
395 #if 0 /* enable when device IDs are available */
396 case (FLASH_WORD_SIZE) AMD_ID_LV320T:
397 info->flash_id += FLASH_AM320T;
398 info->sector_count = 67;
399 info->size = 0x00400000;
402 case (FLASH_WORD_SIZE) AMD_ID_LV320B:
403 info->flash_id += FLASH_AM320B;
404 info->sector_count = 67;
405 info->size = 0x00400000;
408 case (FLASH_WORD_SIZE) SST_ID_xF800A:
409 info->flash_id += FLASH_SST800A;
410 info->sector_count = 16;
411 info->size = 0x00100000;
414 case (FLASH_WORD_SIZE) SST_ID_xF160A:
415 info->flash_id += FLASH_SST160A;
416 info->sector_count = 32;
417 info->size = 0x00200000;
421 info->flash_id = FLASH_UNKNOWN;
422 return (0); /* => no or unknown flash */
426 /* set up sector start address table */
427 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
428 (info->flash_id == FLASH_AM040)) {
429 for (i = 0; i < info->sector_count; i++)
430 info->start[i] = base + (i * 0x00010000);
432 if (info->flash_id & FLASH_BTYPE) {
433 /* set sector offsets for bottom boot block type */
434 info->start[0] = base + 0x00000000;
435 info->start[1] = base + 0x00004000;
436 info->start[2] = base + 0x00006000;
437 info->start[3] = base + 0x00008000;
438 for (i = 4; i < info->sector_count; i++) {
439 info->start[i] = base + (i * 0x00010000) - 0x00030000;
442 /* set sector offsets for top boot block type */
443 i = info->sector_count - 1;
444 info->start[i--] = base + info->size - 0x00004000;
445 info->start[i--] = base + info->size - 0x00006000;
446 info->start[i--] = base + info->size - 0x00008000;
447 for (; i >= 0; i--) {
448 info->start[i] = base + i * 0x00010000;
453 /* check for protected sectors */
454 for (i = 0; i < info->sector_count; i++) {
455 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
456 /* D0 = 1 if protected */
458 addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
459 info->protect[i] = addr2[4] & 1;
461 addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
462 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
463 info->protect[i] = 0;
465 info->protect[i] = addr2[2] & 1;
470 * Prevent writes to uninitialized FLASH.
472 if (info->flash_id != FLASH_UNKNOWN) {
473 #if 0 /* test-only */
475 addr2 = (volatile unsigned char *) info->start[0];
478 addr2[ADDR0] = 0xF0; /* reset bank */
480 addr2 = (FLASH_WORD_SIZE *) info->start[0];
481 *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
483 #else /* test-only */
484 addr2 = (FLASH_WORD_SIZE *) info->start[0];
485 *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
486 #endif /* test-only */
492 int wait_for_DQ7 (flash_info_t * info, int sect)
494 ulong start, now, last;
495 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[sect]);
497 start = get_timer (0);
499 while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != (FLASH_WORD_SIZE) 0x00800080) {
500 if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
501 printf ("Timeout\n");
504 /* show that we're waiting */
505 if ((now - last) > 1000) { /* every second */
513 /*-----------------------------------------------------------------------
516 int flash_erase (flash_info_t * info, int s_first, int s_last)
518 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
519 volatile FLASH_WORD_SIZE *addr2;
520 int flag, prot, sect, l_sect;
523 if ((s_first < 0) || (s_first > s_last)) {
524 if (info->flash_id == FLASH_UNKNOWN) {
525 printf ("- missing\n");
527 printf ("- no sectors to erase\n");
532 if (info->flash_id == FLASH_UNKNOWN) {
533 printf ("Can't erase unknown flash type - aborted\n");
538 for (sect = s_first; sect <= s_last; ++sect) {
539 if (info->protect[sect]) {
545 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
552 /* Disable interrupts which might cause a timeout here */
553 flag = disable_interrupts ();
555 /* Start erase on unprotected sectors */
556 for (sect = s_first; sect <= s_last; sect++) {
557 if (info->protect[sect] == 0) { /* not protected */
558 addr2 = (FLASH_WORD_SIZE *) (info->start[sect]);
559 printf ("Erasing sector %p\n", addr2); /* CLH */
561 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
562 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
563 addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
564 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
565 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
566 addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
567 addr2[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
568 for (i = 0; i < 50; i++)
569 udelay (1000); /* wait 1 ms */
571 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
572 addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
573 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
574 addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
575 addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
576 addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
580 * Wait for each sector to complete, it's more
581 * reliable. According to AMD Spec, you must
582 * issue all erase commands within a specified
583 * timeout. This has been seen to fail, especially
584 * if printf()s are included (for debug)!!
586 wait_for_DQ7 (info, sect);
590 /* re-enable interrupts if necessary */
592 enable_interrupts ();
594 /* wait at least 80us - let's wait 1 ms */
599 * We wait for the last triggered sector
603 wait_for_DQ7 (info, l_sect);
607 /* reset to read mode */
608 addr = (FLASH_WORD_SIZE *) info->start[0];
609 addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
615 /*-----------------------------------------------------------------------
616 * Copy memory to flash, returns:
619 * 2 - Flash not erased
622 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
627 wp = (addr & ~3); /* get lower word aligned address */
630 * handle unaligned start bytes
632 if ((l = addr - wp) != 0) {
634 for (i = 0, cp = wp; i < l; ++i, ++cp) {
635 data = (data << 8) | (*(uchar *) cp);
637 for (; i < 4 && cnt > 0; ++i) {
638 data = (data << 8) | *src++;
642 for (; cnt == 0 && i < 4; ++i, ++cp) {
643 data = (data << 8) | (*(uchar *) cp);
646 if ((rc = write_word (info, wp, data)) != 0) {
653 * handle word aligned part
657 for (i = 0; i < 4; ++i) {
658 data = (data << 8) | *src++;
660 if ((rc = write_word (info, wp, data)) != 0) {
672 * handle unaligned tail bytes
675 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
676 data = (data << 8) | *src++;
679 for (; i < 4; ++i, ++cp) {
680 data = (data << 8) | (*(uchar *) cp);
683 return (write_word (info, wp, data));
686 /*-----------------------------------------------------------------------
687 * Write a word to Flash, returns:
690 * 2 - Flash not erased
692 static int write_word (flash_info_t * info, ulong dest, ulong data)
694 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]);
695 volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
696 volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
700 /* Check if Flash is (sufficiently) erased */
701 if ((*((volatile FLASH_WORD_SIZE *) dest) &
702 (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
706 for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
709 /* Disable interrupts which might cause a timeout here */
710 flag = disable_interrupts ();
712 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
713 addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
714 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
718 /* re-enable interrupts if necessary */
720 enable_interrupts ();
722 /* data polling for D7 */
723 start = get_timer (0);
724 while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
725 (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
727 if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
736 /*-----------------------------------------------------------------------