2 * (C) Copyright 2004-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6 * Add support for Am29F016D and dynamic switch setting.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 * Wait for completion of each sector erase command issued
31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
36 #include <asm/processor.h>
38 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
40 /*-----------------------------------------------------------------------
43 static int write_word(flash_info_t * info, ulong dest, ulong data);
44 #ifdef CFG_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);
53 void flash_print_info(flash_info_t * info)
59 volatile unsigned long *flash;
61 if (info->flash_id == FLASH_UNKNOWN) {
62 printf("missing or unknown FLASH type\n");
66 switch (info->flash_id & FLASH_VENDMASK) {
80 printf("Unknown Vendor ");
84 switch (info->flash_id & FLASH_TYPEMASK) {
86 printf("AM29F040 (512 Kbit, uniform sector size)\n");
89 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
92 printf("AM29LV400T (4 Mbit, top boot sector)\n");
95 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
98 printf("AM29LV800T (8 Mbit, top boot sector)\n");
101 printf("AM29F016D (16 Mbit, uniform sector size)\n");
104 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
107 printf("AM29LV160T (16 Mbit, top boot sector)\n");
110 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
113 printf("AM29LV320T (32 Mbit, top boot sector)\n");
116 printf("AM29LV033C (32 Mbit, top boot sector)\n");
119 printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
122 printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
124 case FLASH_STMW320DT:
125 printf ("M29W320DT (32 M, top sector)\n");
128 printf("Unknown Chip Type\n");
132 printf(" Size: %ld KB in %d Sectors\n",
133 info->size >> 10, info->sector_count);
135 printf(" Sector Start Addresses:");
136 for (i = 0; i < info->sector_count; ++i) {
138 * Check if whole sector is erased
140 if (i != (info->sector_count - 1))
141 size = info->start[i + 1] - info->start[i];
143 size = info->start[0] + info->size - info->start[i];
145 flash = (volatile unsigned long *)info->start[i];
146 size = size >> 2; /* divide by 4 for longword access */
147 for (k = 0; k < size; k++) {
148 if (*flash++ != 0xffffffff) {
158 erased ? " E" : " ", info->protect[i] ? "RO " : " ");
166 * The following code cannot be run from FLASH!
168 #ifdef CFG_FLASH_2ND_16BIT_DEV
169 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
171 /* bit 0 used for big flash marking */
172 if ((ulong)addr & 0x1) {
173 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
175 return flash_get_size_1(addr, info);
179 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
181 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
185 CFG_FLASH_WORD_SIZE value;
186 ulong base = (ulong) addr;
187 volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
189 DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
191 /* Write auto select command: read Manufacturer ID */
192 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
193 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
194 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
198 DEBUGF("FLASH MANUFACT: %x\n", value);
201 case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
202 info->flash_id = FLASH_MAN_AMD;
204 case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
205 info->flash_id = FLASH_MAN_FUJ;
207 case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:
208 info->flash_id = FLASH_MAN_SST;
210 case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:
211 info->flash_id = FLASH_MAN_STM;
214 info->flash_id = FLASH_UNKNOWN;
215 info->sector_count = 0;
217 return (0); /* no or unknown flash */
220 value = addr2[1]; /* device ID */
221 DEBUGF("\nFLASH DEVICEID: %x\n", value);
224 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV040B:
225 info->flash_id += FLASH_AM040;
226 info->sector_count = 8;
227 info->size = 0x0080000; /* => 512 ko */
230 case (CFG_FLASH_WORD_SIZE) AMD_ID_F040B:
231 info->flash_id += FLASH_AM040;
232 info->sector_count = 8;
233 info->size = 0x0080000; /* => 512 ko */
236 case (CFG_FLASH_WORD_SIZE) STM_ID_M29W040B:
237 info->flash_id += FLASH_AM040;
238 info->sector_count = 8;
239 info->size = 0x0080000; /* => 512 ko */
242 case (CFG_FLASH_WORD_SIZE) AMD_ID_F016D:
243 info->flash_id += FLASH_AMD016;
244 info->sector_count = 32;
245 info->size = 0x00200000;
248 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV033C:
249 info->flash_id += FLASH_AMDLV033C;
250 info->sector_count = 64;
251 info->size = 0x00400000;
254 case (CFG_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 */
260 case (CFG_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 */
266 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800T:
267 info->flash_id += FLASH_AM800T;
268 info->sector_count = 19;
269 info->size = 0x00100000;
272 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800B:
273 info->flash_id += FLASH_AM800B;
274 info->sector_count = 19;
275 info->size = 0x00100000;
278 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160T:
279 info->flash_id += FLASH_AM160T;
280 info->sector_count = 35;
281 info->size = 0x00200000;
284 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160B:
285 info->flash_id += FLASH_AM160B;
286 info->sector_count = 35;
287 info->size = 0x00200000;
291 info->flash_id = FLASH_UNKNOWN;
292 return (0); /* => no or unknown flash */
295 /* set up sector start address table */
296 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
297 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
298 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
299 for (i = 0; i < info->sector_count; i++)
300 info->start[i] = base + (i * 0x00010000);
302 if (info->flash_id & FLASH_BTYPE) {
303 /* set sector offsets for bottom boot block type */
304 info->start[0] = base + 0x00000000;
305 info->start[1] = base + 0x00004000;
306 info->start[2] = base + 0x00006000;
307 info->start[3] = base + 0x00008000;
308 for (i = 4; i < info->sector_count; i++) {
310 base + (i * 0x00010000) - 0x00030000;
313 /* set sector offsets for top boot block type */
314 i = info->sector_count - 1;
315 info->start[i--] = base + info->size - 0x00004000;
316 info->start[i--] = base + info->size - 0x00006000;
317 info->start[i--] = base + info->size - 0x00008000;
318 for (; i >= 0; i--) {
319 info->start[i] = base + i * 0x00010000;
324 /* check for protected sectors */
325 for (i = 0; i < info->sector_count; i++) {
326 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
327 /* D0 = 1 if protected */
328 addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
330 /* For AMD29033C flash we need to resend the command of *
331 * reading flash protection for upper 8 Mb of flash */
333 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAAAAAAAA;
334 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55555555;
335 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90909090;
338 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
339 info->protect[i] = 0;
341 info->protect[i] = addr2[2] & 1;
344 /* issue bank reset to return to read mode */
345 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
350 static int wait_for_DQ7_1(flash_info_t * info, int sect)
352 ulong start, now, last;
353 volatile CFG_FLASH_WORD_SIZE *addr =
354 (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
356 start = get_timer(0);
358 while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
359 (CFG_FLASH_WORD_SIZE) 0x00800080) {
360 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
364 /* show that we're waiting */
365 if ((now - last) > 1000) { /* every second */
373 #ifdef CFG_FLASH_2ND_16BIT_DEV
374 int flash_erase(flash_info_t * info, int s_first, int s_last)
376 if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
377 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
378 ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
379 return flash_erase_2(info, s_first, s_last);
381 return flash_erase_1(info, s_first, s_last);
385 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
387 int flash_erase(flash_info_t * info, int s_first, int s_last)
390 volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
391 volatile CFG_FLASH_WORD_SIZE *addr2;
392 int flag, prot, sect, l_sect;
395 if ((s_first < 0) || (s_first > s_last)) {
396 if (info->flash_id == FLASH_UNKNOWN) {
397 printf("- missing\n");
399 printf("- no sectors to erase\n");
404 if (info->flash_id == FLASH_UNKNOWN) {
405 printf("Can't erase unknown flash type - aborted\n");
410 for (sect = s_first; sect <= s_last; ++sect) {
411 if (info->protect[sect]) {
417 printf("- Warning: %d protected sectors will not be erased!\n",
425 /* Disable interrupts which might cause a timeout here */
426 flag = disable_interrupts();
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 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
433 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
434 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
435 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
436 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
437 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
438 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
439 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00500050; /* block erase */
440 for (i = 0; i < 50; i++)
441 udelay(1000); /* wait 1 ms */
443 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
444 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
445 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
446 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
447 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
448 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
452 * Wait for each sector to complete, it's more
453 * reliable. According to AMD Spec, you must
454 * issue all erase commands within a specified
455 * timeout. This has been seen to fail, especially
456 * if printf()s are included (for debug)!!
458 wait_for_DQ7_1(info, sect);
462 /* re-enable interrupts if necessary */
466 /* wait at least 80us - let's wait 1 ms */
469 /* reset to read mode */
470 addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
471 addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
477 /*-----------------------------------------------------------------------
478 * Copy memory to flash, returns:
481 * 2 - Flash not erased
483 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
488 wp = (addr & ~3); /* get lower word aligned address */
491 * handle unaligned start bytes
493 if ((l = addr - wp) != 0) {
495 for (i = 0, cp = wp; i < l; ++i, ++cp) {
496 data = (data << 8) | (*(uchar *) cp);
498 for (; i < 4 && cnt > 0; ++i) {
499 data = (data << 8) | *src++;
503 for (; cnt == 0 && i < 4; ++i, ++cp) {
504 data = (data << 8) | (*(uchar *) cp);
507 if ((rc = write_word(info, wp, data)) != 0) {
514 * handle word aligned part
518 for (i = 0; i < 4; ++i) {
519 data = (data << 8) | *src++;
521 if ((rc = write_word(info, wp, data)) != 0) {
533 * handle unaligned tail bytes
536 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
537 data = (data << 8) | *src++;
540 for (; i < 4; ++i, ++cp) {
541 data = (data << 8) | (*(uchar *) cp);
544 return (write_word(info, wp, data));
547 /*-----------------------------------------------------------------------
548 * Copy memory to flash, returns:
551 * 2 - Flash not erased
553 #ifdef CFG_FLASH_2ND_16BIT_DEV
554 static int write_word(flash_info_t * info, ulong dest, ulong data)
556 if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
557 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
558 ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
559 return write_word_2(info, dest, data);
561 return write_word_1(info, dest, data);
565 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
567 static int write_word(flash_info_t * info, ulong dest, ulong data)
570 volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
571 volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
572 volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
576 /* Check if Flash is (sufficiently) erased */
577 if ((*((vu_long *)dest) & data) != data) {
581 for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
584 /* Disable interrupts which might cause a timeout here */
585 flag = disable_interrupts();
587 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
588 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
589 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
593 /* re-enable interrupts if necessary */
597 /* data polling for D7 */
598 start = get_timer(0);
599 while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
600 (data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
602 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
611 #ifdef CFG_FLASH_2ND_16BIT_DEV
613 #undef CFG_FLASH_WORD_SIZE
614 #define CFG_FLASH_WORD_SIZE unsigned short
617 * The following code cannot be run from FLASH!
619 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
623 CFG_FLASH_WORD_SIZE value;
624 ulong base = (ulong) addr;
625 volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
627 DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
629 /* Write auto select command: read Manufacturer ID */
630 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
631 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
632 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
636 DEBUGF("FLASH MANUFACT: %x\n", value);
639 case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
640 info->flash_id = FLASH_MAN_AMD;
642 case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
643 info->flash_id = FLASH_MAN_FUJ;
645 case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:
646 info->flash_id = FLASH_MAN_SST;
648 case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:
649 info->flash_id = FLASH_MAN_STM;
652 info->flash_id = FLASH_UNKNOWN;
653 info->sector_count = 0;
655 return (0); /* no or unknown flash */
658 value = addr2[1]; /* device ID */
660 DEBUGF("\nFLASH DEVICEID: %x\n", value);
664 case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T:
665 info->flash_id += FLASH_AM320T;
666 info->sector_count = 71;
667 info->size = 0x00400000; break; /* => 4 MB */
669 case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B:
670 info->flash_id += FLASH_AM320B;
671 info->sector_count = 71;
672 info->size = 0x00400000; break; /* => 4 MB */
674 case (CFG_FLASH_WORD_SIZE)STM_ID_29W320DT:
675 info->flash_id += FLASH_STMW320DT;
676 info->sector_count = 67;
677 info->size = 0x00400000; break; /* => 4 MB */
680 info->flash_id = FLASH_UNKNOWN;
681 return (0); /* => no or unknown flash */
684 /* set up sector start address table */
685 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
686 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
687 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
688 for (i = 0; i < info->sector_count; i++)
689 info->start[i] = base + (i * 0x00010000);
690 } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
691 /* set sector offsets for top boot block type */
693 i = info->sector_count;
694 /* 1 x 16k boot sector */
697 info->start[i] = base;
698 /* 2 x 8k boot sectors */
699 for (n=0; n<2; ++n) {
702 info->start[i] = base;
704 /* 1 x 32k boot sector */
707 info->start[i] = base;
709 while (i > 0) { /* 64k regular sectors */
712 info->start[i] = base;
715 if (info->flash_id & FLASH_BTYPE) {
716 /* set sector offsets for bottom boot block type */
717 info->start[0] = base + 0x00000000;
718 info->start[1] = base + 0x00004000;
719 info->start[2] = base + 0x00006000;
720 info->start[3] = base + 0x00008000;
721 for (i = 4; i < info->sector_count; i++) {
723 base + (i * 0x00010000) - 0x00030000;
726 /* set sector offsets for top boot block type */
727 i = info->sector_count - 1;
728 info->start[i--] = base + info->size - 0x00004000;
729 info->start[i--] = base + info->size - 0x00006000;
730 info->start[i--] = base + info->size - 0x00008000;
731 for (; i >= 0; i--) {
732 info->start[i] = base + i * 0x00010000;
737 /* check for protected sectors */
738 for (i = 0; i < info->sector_count; i++) {
739 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
740 /* D0 = 1 if protected */
741 addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
743 /* For AMD29033C flash we need to resend the command of *
744 * reading flash protection for upper 8 Mb of flash */
746 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAAAAAAAA;
747 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55555555;
748 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90909090;
751 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
752 info->protect[i] = 0;
754 info->protect[i] = addr2[2] & 1;
757 /* issue bank reset to return to read mode */
758 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
763 static int wait_for_DQ7_2(flash_info_t * info, int sect)
765 ulong start, now, last;
766 volatile CFG_FLASH_WORD_SIZE *addr =
767 (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
769 start = get_timer(0);
771 while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
772 (CFG_FLASH_WORD_SIZE) 0x00800080) {
773 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
777 /* show that we're waiting */
778 if ((now - last) > 1000) { /* every second */
786 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
788 volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
789 volatile CFG_FLASH_WORD_SIZE *addr2;
790 int flag, prot, sect, l_sect;
793 if ((s_first < 0) || (s_first > s_last)) {
794 if (info->flash_id == FLASH_UNKNOWN) {
795 printf("- missing\n");
797 printf("- no sectors to erase\n");
802 if (info->flash_id == FLASH_UNKNOWN) {
803 printf("Can't erase unknown flash type - aborted\n");
808 for (sect = s_first; sect <= s_last; ++sect) {
809 if (info->protect[sect]) {
815 printf("- Warning: %d protected sectors will not be erased!\n",
823 /* Disable interrupts which might cause a timeout here */
824 flag = disable_interrupts();
826 /* Start erase on unprotected sectors */
827 for (sect = s_first; sect <= s_last; sect++) {
828 if (info->protect[sect] == 0) { /* not protected */
829 addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
831 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
832 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
833 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
834 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
835 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
836 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
837 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00500050; /* block erase */
838 for (i = 0; i < 50; i++)
839 udelay(1000); /* wait 1 ms */
841 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
842 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
843 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
844 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
845 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
846 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
850 * Wait for each sector to complete, it's more
851 * reliable. According to AMD Spec, you must
852 * issue all erase commands within a specified
853 * timeout. This has been seen to fail, especially
854 * if printf()s are included (for debug)!!
856 wait_for_DQ7_2(info, sect);
860 /* re-enable interrupts if necessary */
864 /* wait at least 80us - let's wait 1 ms */
867 /* reset to read mode */
868 addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
869 addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
875 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
877 volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
878 volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
879 volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
883 /* Check if Flash is (sufficiently) erased */
884 if ((*((vu_long *)dest) & data) != data) {
888 for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
891 /* Disable interrupts which might cause a timeout here */
892 flag = disable_interrupts();
894 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
895 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
896 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
900 /* re-enable interrupts if necessary */
904 /* data polling for D7 */
905 start = get_timer(0);
906 while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
907 (data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
909 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
917 #endif /* CFG_FLASH_2ND_16BIT_DEV */