2 * (C) Copyright 2000-2004
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,
30 #include <environment.h>
32 #include <asm/processor.h>
34 DECLARE_GLOBAL_DATA_PTR;
36 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M)
37 # ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
38 # define CFG_OR_TIMING_FLASH_AT_50MHZ (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
39 OR_SCY_2_CLK | OR_EHTR | OR_BI)
41 #endif /* CONFIG_TQM8xxL/M, !TQM866M */
44 #define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
47 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
49 /*-----------------------------------------------------------------------
52 static ulong flash_get_size (vu_long *addr, flash_info_t *info);
53 static int write_word (flash_info_t *info, ulong dest, ulong data);
55 /*-----------------------------------------------------------------------
58 unsigned long flash_init (void)
60 volatile immap_t *immap = (immap_t *)CFG_IMMR;
61 volatile memctl8xx_t *memctl = &immap->im_memctl;
62 unsigned long size_b0, size_b1;
65 #ifdef CFG_OR_TIMING_FLASH_AT_50MHZ
66 int scy, trlx, flash_or_timing, clk_diff;
68 scy = (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_SCY_MSK) >> 4;
69 if (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_TRLX) {
75 /* We assume that each 10MHz of bus clock require 1-clk SCY
78 clk_diff = (gd->bus_clk / 1000000) - 50;
80 /* We need proper rounding here. This is what the "+5" and "-5"
84 scy += (clk_diff + 5) / 10;
86 scy += (clk_diff - 5) / 10;
88 /* For bus frequencies above 50MHz, we want to use relaxed timing
91 if (gd->bus_clk >= 50000000)
104 flash_or_timing = (scy << 4) | trlx |
105 (CFG_OR_TIMING_FLASH_AT_50MHZ & ~(OR_TRLX | OR_SCY_MSK));
107 /* Init: no FLASHes known */
108 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
109 flash_info[i].flash_id = FLASH_UNKNOWN;
112 /* Static FLASH Bank configuration here - FIXME XXX */
114 debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);
116 size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
118 debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);
120 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
121 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
122 size_b0, size_b0<<20);
125 size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
127 debug ("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
129 if (size_b1 > size_b0) {
131 "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
132 size_b1, size_b1<<20,
135 flash_info[0].flash_id = FLASH_UNKNOWN;
136 flash_info[1].flash_id = FLASH_UNKNOWN;
137 flash_info[0].sector_count = -1;
138 flash_info[1].sector_count = -1;
139 flash_info[0].size = 0;
140 flash_info[1].size = 0;
144 debug ("## Before remap: "
145 "BR0: 0x%08x OR0: 0x%08x "
146 "BR1: 0x%08x OR1: 0x%08x\n",
147 memctl->memc_br0, memctl->memc_or0,
148 memctl->memc_br1, memctl->memc_or1);
150 /* Remap FLASH according to real size */
151 #ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
152 memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
154 memctl->memc_or0 = flash_or_timing | (-size_b0 & OR_AM_MSK);
156 memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
158 debug ("## BR0: 0x%08x OR0: 0x%08x\n",
159 memctl->memc_br0, memctl->memc_or0);
161 /* Re-do sizing to get full correct info */
162 size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
164 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
165 /* monitor protection ON by default */
166 debug ("Protect monitor: %08lx ... %08lx\n",
167 (ulong)CFG_MONITOR_BASE,
168 (ulong)CFG_MONITOR_BASE + monitor_flash_len - 1);
170 flash_protect(FLAG_PROTECT_SET,
172 CFG_MONITOR_BASE + monitor_flash_len - 1,
176 #ifdef CFG_ENV_IS_IN_FLASH
177 /* ENV protection ON by default */
178 # ifdef CFG_ENV_ADDR_REDUND
179 debug ("Protect primary environment: %08lx ... %08lx\n",
181 (ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);
183 debug ("Protect environment: %08lx ... %08lx\n",
185 (ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);
188 flash_protect(FLAG_PROTECT_SET,
190 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
194 #ifdef CFG_ENV_ADDR_REDUND
195 debug ("Protect redundand environment: %08lx ... %08lx\n",
196 (ulong)CFG_ENV_ADDR_REDUND,
197 (ulong)CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1);
199 flash_protect(FLAG_PROTECT_SET,
201 CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
206 #ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
207 memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
209 memctl->memc_or1 = flash_or_timing | (-size_b1 & 0xFFFF8000);
211 memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
214 debug ("## BR1: 0x%08x OR1: 0x%08x\n",
215 memctl->memc_br1, memctl->memc_or1);
217 /* Re-do sizing to get full correct info */
218 size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
221 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
222 /* monitor protection ON by default */
223 flash_protect(FLAG_PROTECT_SET,
225 CFG_MONITOR_BASE+monitor_flash_len-1,
229 #ifdef CFG_ENV_IS_IN_FLASH
230 /* ENV protection ON by default */
231 flash_protect(FLAG_PROTECT_SET,
233 CFG_ENV_ADDR+CFG_ENV_SIZE-1,
237 memctl->memc_br1 = 0; /* invalidate bank */
239 flash_info[1].flash_id = FLASH_UNKNOWN;
240 flash_info[1].sector_count = -1;
241 flash_info[1].size = 0;
243 debug ("## DISABLE BR1: 0x%08x OR1: 0x%08x\n",
244 memctl->memc_br1, memctl->memc_or1);
247 debug ("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
249 flash_info[0].size = size_b0;
250 flash_info[1].size = size_b1;
252 return (size_b0 + size_b1);
255 /*-----------------------------------------------------------------------
257 void flash_print_info (flash_info_t *info)
261 if (info->flash_id == FLASH_UNKNOWN) {
262 printf ("missing or unknown FLASH type\n");
266 switch (info->flash_id & FLASH_VENDMASK) {
267 case FLASH_MAN_AMD: printf ("AMD "); break;
268 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
269 default: printf ("Unknown Vendor "); break;
272 switch (info->flash_id & FLASH_TYPEMASK) {
273 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
274 case FLASH_AMLV128U: printf ("AM29LV128ML (128Mbit, uniform sector size)\n");
276 case FLASH_AMLV320U: printf ("AM29LV320ML (32Mbit, uniform sector size)\n");
278 case FLASH_AMLV640U: printf ("AM29LV640ML (64Mbit, uniform sector size)\n");
280 case FLASH_AMLV320B: printf ("AM29LV320MB (32Mbit, bottom boot sect)\n");
282 # else /* ! TQM8xxM */
283 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
285 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
287 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
289 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
291 case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
293 case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
296 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
298 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
300 case FLASH_AMDL163B: printf ("AM29DL163B (16 Mbit, bottom boot sect)\n");
302 default: printf ("Unknown Chip Type\n");
306 printf (" Size: %ld MB in %d Sectors\n",
307 info->size >> 20, info->sector_count);
309 printf (" Sector Start Addresses:");
310 for (i=0; i<info->sector_count; ++i) {
315 info->protect[i] ? " (RO)" : " "
322 /*-----------------------------------------------------------------------
326 /*-----------------------------------------------------------------------
330 * The following code cannot be run from FLASH!
333 static ulong flash_get_size (vu_long *addr, flash_info_t *info)
337 ulong base = (ulong)addr;
339 /* Write auto select command: read Manufacturer ID */
340 addr[0x0555] = 0x00AA00AA;
341 addr[0x02AA] = 0x00550055;
342 addr[0x0555] = 0x00900090;
346 debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
350 debug ("Manufacturer: AMD\n");
351 info->flash_id = FLASH_MAN_AMD;
354 debug ("Manufacturer: FUJITSU\n");
355 info->flash_id = FLASH_MAN_FUJ;
358 debug ("Manufacturer: *** unknown ***\n");
359 info->flash_id = FLASH_UNKNOWN;
360 info->sector_count = 0;
362 return (0); /* no or unknown flash */
365 value = addr[1]; /* device ID */
367 debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
370 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
372 debug ("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n",
374 /* Special case for AMLV320MH/L */
375 if ((addr[14] & 0x00ff00ff) == 0x001d001d &&
376 (addr[15] & 0x00ff00ff) == 0x00000000) {
377 debug ("Chip: AMLV320MH/L\n");
378 info->flash_id += FLASH_AMLV320U;
379 info->sector_count = 64;
380 info->size = 0x00800000; /* => 8 MB */
384 case AMD_ID_LV128U_2:
385 if (addr[15] != AMD_ID_LV128U_3) {
386 debug ("Chip: AMLV128U -> unknown\n");
387 info->flash_id = FLASH_UNKNOWN;
389 debug ("Chip: AMLV128U\n");
390 info->flash_id += FLASH_AMLV128U;
391 info->sector_count = 256;
392 info->size = 0x02000000;
394 break; /* => 32 MB */
395 case AMD_ID_LV640U_2:
396 if (addr[15] != AMD_ID_LV640U_3) {
397 debug ("Chip: AMLV640U -> unknown\n");
398 info->flash_id = FLASH_UNKNOWN;
400 debug ("Chip: AMLV640U\n");
401 info->flash_id += FLASH_AMLV640U;
402 info->sector_count = 128;
403 info->size = 0x01000000;
405 break; /* => 16 MB */
406 case AMD_ID_LV320B_2:
407 if (addr[15] != AMD_ID_LV320B_3) {
408 debug ("Chip: AMLV320B -> unknown\n");
409 info->flash_id = FLASH_UNKNOWN;
411 debug ("Chip: AMLV320B\n");
412 info->flash_id += FLASH_AMLV320B;
413 info->sector_count = 71;
414 info->size = 0x00800000;
418 debug ("Chip: *** unknown ***\n");
419 info->flash_id = FLASH_UNKNOWN;
423 # else /* ! TQM8xxM */
425 info->flash_id += FLASH_AM400T;
426 info->sector_count = 11;
427 info->size = 0x00100000;
431 info->flash_id += FLASH_AM400B;
432 info->sector_count = 11;
433 info->size = 0x00100000;
437 info->flash_id += FLASH_AM800T;
438 info->sector_count = 19;
439 info->size = 0x00200000;
443 info->flash_id += FLASH_AM800B;
444 info->sector_count = 19;
445 info->size = 0x00200000;
449 info->flash_id += FLASH_AM320T;
450 info->sector_count = 71;
451 info->size = 0x00800000;
455 info->flash_id += FLASH_AM320B;
456 info->sector_count = 71;
457 info->size = 0x00800000;
462 info->flash_id += FLASH_AM160T;
463 info->sector_count = 35;
464 info->size = 0x00400000;
468 info->flash_id += FLASH_AM160B;
469 info->sector_count = 35;
470 info->size = 0x00400000;
474 info->flash_id += FLASH_AMDL163B;
475 info->sector_count = 39;
476 info->size = 0x00400000;
480 info->flash_id = FLASH_UNKNOWN;
481 return (0); /* => no or unknown flash */
484 /* set up sector start address table */
486 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
488 switch (info->flash_id & FLASH_TYPEMASK) {
489 /* only known types here - no default */
493 for (i = 0; i < info->sector_count; i++) {
494 info->start[i] = base;
499 for (i = 0; i < info->sector_count; i++) {
500 info->start[i] = base;
502 * The first 8 sectors are 8 kB,
503 * all the other ones are 64 kB
512 # else /* ! TQM8xxM */
515 /* set sector offsets for bottom boot block type */
516 info->start[0] = base + 0x00000000;
517 info->start[1] = base + 0x00008000;
518 info->start[2] = base + 0x0000C000;
519 info->start[3] = base + 0x00010000;
520 for (i = 4; i < info->sector_count; i++) {
521 info->start[i] = base + (i * 0x00020000) - 0x00060000;
526 /* set sector offsets for top boot block type */
527 i = info->sector_count - 1;
528 info->start[i--] = base + info->size - 0x00008000;
529 info->start[i--] = base + info->size - 0x0000C000;
530 info->start[i--] = base + info->size - 0x00010000;
531 for (; i >= 0; i--) {
532 info->start[i] = base + i * 0x00020000;
536 for (i = 0; i < info->sector_count; i++) {
537 info->start[i] = base;
539 * The first 8 sectors are 8 kB,
540 * all the other ones are 64 kB
548 for (i = 0; i < info->sector_count; i++) {
549 info->start[i] = base;
551 * The last 8 sectors are 8 kB,
552 * all the other ones are 64 kB
554 base += (i < (info->sector_count - 8))
561 /* set sector offsets for bottom boot block type */
562 info->start[0] = base + 0x00000000;
563 info->start[1] = base + 0x00008000;
564 info->start[2] = base + 0x0000C000;
565 info->start[3] = base + 0x00010000;
566 for (i = 4; i < info->sector_count; i++) {
567 info->start[i] = base + (i * 0x00020000) - 0x00060000;
571 /* set sector offsets for top boot block type */
572 i = info->sector_count - 1;
573 info->start[i--] = base + info->size - 0x00008000;
574 info->start[i--] = base + info->size - 0x0000C000;
575 info->start[i--] = base + info->size - 0x00010000;
576 for (; i >= 0; i--) {
577 info->start[i] = base + i * 0x00020000;
581 for (i = 0; i < info->sector_count; i++) {
582 info->start[i] = base;
584 * The first 8 sectors are 8 kB,
585 * all the other ones are 64 kB
598 /* check for protected sectors */
599 for (i = 0; i < info->sector_count; i++) {
600 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
601 /* D0 = 1 if protected */
602 addr = (volatile unsigned long *)(info->start[i]);
603 info->protect[i] = addr[2] & 1;
608 * Prevent writes to uninitialized FLASH.
610 if (info->flash_id != FLASH_UNKNOWN) {
611 addr = (volatile unsigned long *)info->start[0];
613 *addr = 0x00F000F0; /* reset bank */
620 /*-----------------------------------------------------------------------
623 int flash_erase (flash_info_t *info, int s_first, int s_last)
625 vu_long *addr = (vu_long*)(info->start[0]);
626 int flag, prot, sect, l_sect;
627 ulong start, now, last;
629 debug ("flash_erase: first: %d last: %d\n", s_first, s_last);
631 if ((s_first < 0) || (s_first > s_last)) {
632 if (info->flash_id == FLASH_UNKNOWN) {
633 printf ("- missing\n");
635 printf ("- no sectors to erase\n");
640 if ((info->flash_id == FLASH_UNKNOWN) ||
641 (info->flash_id > FLASH_AMD_COMP)) {
642 printf ("Can't erase unknown flash type %08lx - aborted\n",
648 for (sect=s_first; sect<=s_last; ++sect) {
649 if (info->protect[sect]) {
655 printf ("- Warning: %d protected sectors will not be erased!\n",
663 /* Disable interrupts which might cause a timeout here */
664 flag = disable_interrupts();
666 addr[0x0555] = 0x00AA00AA;
667 addr[0x02AA] = 0x00550055;
668 addr[0x0555] = 0x00800080;
669 addr[0x0555] = 0x00AA00AA;
670 addr[0x02AA] = 0x00550055;
672 /* Start erase on unprotected sectors */
673 for (sect = s_first; sect<=s_last; sect++) {
674 if (info->protect[sect] == 0) { /* not protected */
675 addr = (vu_long*)(info->start[sect]);
676 addr[0] = 0x00300030;
681 /* re-enable interrupts if necessary */
685 /* wait at least 80us - let's wait 1 ms */
689 * We wait for the last triggered sector
694 start = get_timer (0);
696 addr = (vu_long*)(info->start[l_sect]);
697 while ((addr[0] & 0x00800080) != 0x00800080) {
698 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
699 printf ("Timeout\n");
702 /* show that we're waiting */
703 if ((now - last) > 1000) { /* every second */
710 /* reset to read mode */
711 addr = (volatile unsigned long *)info->start[0];
712 addr[0] = 0x00F000F0; /* reset bank */
718 /*-----------------------------------------------------------------------
719 * Copy memory to flash, returns:
722 * 2 - Flash not erased
725 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
730 wp = (addr & ~3); /* get lower word aligned address */
733 * handle unaligned start bytes
735 if ((l = addr - wp) != 0) {
737 for (i=0, cp=wp; i<l; ++i, ++cp) {
738 data = (data << 8) | (*(uchar *)cp);
740 for (; i<4 && cnt>0; ++i) {
741 data = (data << 8) | *src++;
745 for (; cnt==0 && i<4; ++i, ++cp) {
746 data = (data << 8) | (*(uchar *)cp);
749 if ((rc = write_word(info, wp, data)) != 0) {
756 * handle word aligned part
760 for (i=0; i<4; ++i) {
761 data = (data << 8) | *src++;
763 if ((rc = write_word(info, wp, data)) != 0) {
775 * handle unaligned tail bytes
778 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
779 data = (data << 8) | *src++;
782 for (; i<4; ++i, ++cp) {
783 data = (data << 8) | (*(uchar *)cp);
786 return (write_word(info, wp, data));
789 /*-----------------------------------------------------------------------
790 * Write a word to Flash, returns:
793 * 2 - Flash not erased
795 static int write_word (flash_info_t *info, ulong dest, ulong data)
797 vu_long *addr = (vu_long*)(info->start[0]);
801 /* Check if Flash is (sufficiently) erased */
802 if ((*((vu_long *)dest) & data) != data) {
805 /* Disable interrupts which might cause a timeout here */
806 flag = disable_interrupts();
808 addr[0x0555] = 0x00AA00AA;
809 addr[0x02AA] = 0x00550055;
810 addr[0x0555] = 0x00A000A0;
812 *((vu_long *)dest) = data;
814 /* re-enable interrupts if necessary */
818 /* data polling for D7 */
819 start = get_timer (0);
820 while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
821 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
828 /*-----------------------------------------------------------------------