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>
41 #define DEBUGF(x...) printf(x)
46 #define BOOT_SMALL_FLASH 32 /* 00100000 */
47 #define FLASH_ONBD_N 2 /* 00000010 */
48 #define FLASH_SRAM_SEL 1 /* 00000001 */
50 #define BOOT_SMALL_FLASH_VAL 4
51 #define FLASH_ONBD_N_VAL 2
52 #define FLASH_SRAM_SEL_VAL 1
55 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
57 static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
58 {0xffc00000, 0xffe00000, 0xff880000}, /* 0:000: configuraton 3 */
59 {0xffc00000, 0xffe00000, 0xff800000}, /* 1:001: configuraton 4 */
60 {0xffc00000, 0xffe00000, 0x00000000}, /* 2:010: configuraton 7 */
61 {0xffc00000, 0xffe00000, 0x00000000}, /* 3:011: configuraton 8 */
62 {0xff800000, 0xffa00000, 0xfff80000}, /* 4:100: configuraton 1 */
63 {0xff800000, 0xffa00000, 0xfff00000}, /* 5:101: configuraton 2 */
64 {0xffc00000, 0xffe00000, 0x00000000}, /* 6:110: configuraton 5 */
65 {0xffc00000, 0xffe00000, 0x00000000} /* 7:111: configuraton 6 */
68 /*-----------------------------------------------------------------------
71 static ulong flash_get_size (vu_long *addr, flash_info_t *info);
72 static int write_word (flash_info_t *info, ulong dest, ulong data);
74 static void flash_get_offsets (ulong base, flash_info_t *info);
80 #define FLASH_WORD_SIZE unsigned char
86 #define FLASH_WORD_SIZE unsigned short
89 #ifdef CONFIG_WALNUT405
92 #define FLASH_WORD_SIZE unsigned char
98 #define FLASH_WORD_SIZE unsigned char
101 /*-----------------------------------------------------------------------
104 unsigned long flash_init (void) {
105 unsigned long total_b = 0;
106 unsigned long size_b[CFG_MAX_FLASH_BANKS];
107 unsigned char * fpga_base = (unsigned char *)CFG_FPGA_BASE;
108 unsigned char switch_status;
109 unsigned short index = 0;
113 /* read FPGA base register FPGA_REG0 */
114 switch_status = *fpga_base;
116 /* check the bitmap of switch status */
117 if (switch_status & BOOT_SMALL_FLASH) {
118 index += BOOT_SMALL_FLASH_VAL;
120 if (switch_status & FLASH_ONBD_N) {
121 index += FLASH_ONBD_N_VAL;
123 if (switch_status & FLASH_SRAM_SEL) {
124 index += FLASH_SRAM_SEL_VAL;
128 DEBUGF("FLASH: Index: %d\n", index);
130 /* Init: no FLASHes known */
131 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
132 flash_info[i].flash_id = FLASH_UNKNOWN;
133 flash_info[i].sector_count = -1;
134 flash_info[i].size = 0;
136 /* check whether the address is 0 */
137 if (flash_addr_table[index][i] == 0) {
141 /* call flash_get_size() to initialize sector address */
142 size_b[i] = flash_get_size(
143 (vu_long *)flash_addr_table[index][i], &flash_info[i]);
144 flash_info[i].size = size_b[i];
145 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
146 printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
147 i, size_b[i], size_b[i]<<20);
148 flash_info[i].sector_count = -1;
149 flash_info[i].size = 0;
152 total_b += flash_info[i].size;
160 /*-----------------------------------------------------------------------
163 static void flash_get_offsets (ulong base, flash_info_t *info)
167 /* set up sector start address table */
168 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
169 (info->flash_id == FLASH_AM040) ||
170 (info->flash_id == FLASH_AMD016)) {
171 for (i = 0; i < info->sector_count; i++)
172 info->start[i] = base + (i * 0x00010000);
174 if (info->flash_id & FLASH_BTYPE) {
175 /* set sector offsets for bottom boot block type */
176 info->start[0] = base + 0x00000000;
177 info->start[1] = base + 0x00004000;
178 info->start[2] = base + 0x00006000;
179 info->start[3] = base + 0x00008000;
180 for (i = 4; i < info->sector_count; i++) {
181 info->start[i] = base + (i * 0x00010000) - 0x00030000;
184 /* set sector offsets for top boot block type */
185 i = info->sector_count - 1;
186 info->start[i--] = base + info->size - 0x00004000;
187 info->start[i--] = base + info->size - 0x00006000;
188 info->start[i--] = base + info->size - 0x00008000;
189 for (; i >= 0; i--) {
190 info->start[i] = base + i * 0x00010000;
197 /*-----------------------------------------------------------------------
199 void flash_print_info (flash_info_t *info)
205 volatile unsigned long *flash;
207 if (info->flash_id == FLASH_UNKNOWN) {
208 printf ("missing or unknown FLASH type\n");
212 switch (info->flash_id & FLASH_VENDMASK) {
213 case FLASH_MAN_AMD: printf ("AMD "); break;
214 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
215 case FLASH_MAN_SST: printf ("SST "); break;
216 default: printf ("Unknown Vendor "); break;
219 switch (info->flash_id & FLASH_TYPEMASK) {
220 case FLASH_AMD016: printf ("AM29F016D (16 Mbit, uniform sector size)\n");
222 case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
224 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
226 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
228 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
230 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
232 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
234 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
236 case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
238 case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
240 case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
242 case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
244 default: printf ("Unknown Chip Type\n");
248 printf (" Size: %ld KB in %d Sectors\n",
249 info->size >> 10, info->sector_count);
251 printf (" Sector Start Addresses:");
252 for (i=0; i<info->sector_count; ++i) {
254 * Check if whole sector is erased
256 if (i != (info->sector_count-1))
257 size = info->start[i+1] - info->start[i];
259 size = info->start[0] + info->size - info->start[i];
261 flash = (volatile unsigned long *)info->start[i];
262 size = size >> 2; /* divide by 4 for longword access */
263 for (k=0; k<size; k++)
265 if (*flash++ != 0xffffffff)
274 printf (" %08lX%s%s",
277 info->protect[i] ? "RO " : " "
284 /*-----------------------------------------------------------------------
288 /*-----------------------------------------------------------------------
292 * The following code cannot be run from FLASH!
294 static ulong flash_get_size (vu_long *addr, flash_info_t *info)
297 FLASH_WORD_SIZE value;
298 ulong base = (ulong)addr;
299 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
301 DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr );
303 /* Write auto select command: read Manufacturer ID */
305 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
307 addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
309 addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
318 DEBUGF("FLASH MANUFACT: %x\n", value);
321 case (FLASH_WORD_SIZE)AMD_MANUFACT:
322 info->flash_id = FLASH_MAN_AMD;
324 case (FLASH_WORD_SIZE)FUJ_MANUFACT:
325 info->flash_id = FLASH_MAN_FUJ;
327 case (FLASH_WORD_SIZE)SST_MANUFACT:
328 info->flash_id = FLASH_MAN_SST;
331 info->flash_id = FLASH_UNKNOWN;
332 info->sector_count = 0;
334 return (0); /* no or unknown flash */
338 value = addr2[0]; /* device ID */
339 debug ("\ndev_code=%x\n", value);
341 value = addr2[1]; /* device ID */
344 DEBUGF("\nFLASH DEVICEID: %x\n", value);
347 case (FLASH_WORD_SIZE)AMD_ID_F016D:
348 info->flash_id += FLASH_AMD016;
349 info->sector_count = 32;
350 info->size = 0x00200000;
352 case (FLASH_WORD_SIZE)AMD_ID_F040B:
353 info->flash_id += FLASH_AM040;
354 info->sector_count = 8;
355 info->size = 0x0080000; /* => 512 ko */
357 case (FLASH_WORD_SIZE)AMD_ID_LV400T:
358 info->flash_id += FLASH_AM400T;
359 info->sector_count = 11;
360 info->size = 0x00080000;
361 break; /* => 0.5 MB */
363 case (FLASH_WORD_SIZE)AMD_ID_LV400B:
364 info->flash_id += FLASH_AM400B;
365 info->sector_count = 11;
366 info->size = 0x00080000;
367 break; /* => 0.5 MB */
369 case (FLASH_WORD_SIZE)AMD_ID_LV800T:
370 info->flash_id += FLASH_AM800T;
371 info->sector_count = 19;
372 info->size = 0x00100000;
375 case (FLASH_WORD_SIZE)AMD_ID_LV800B:
376 info->flash_id += FLASH_AM800B;
377 info->sector_count = 19;
378 info->size = 0x00100000;
381 case (FLASH_WORD_SIZE)AMD_ID_LV160T:
382 info->flash_id += FLASH_AM160T;
383 info->sector_count = 35;
384 info->size = 0x00200000;
387 case (FLASH_WORD_SIZE)AMD_ID_LV160B:
388 info->flash_id += FLASH_AM160B;
389 info->sector_count = 35;
390 info->size = 0x00200000;
392 #if 0 /* enable when device IDs are available */
393 case (FLASH_WORD_SIZE)AMD_ID_LV320T:
394 info->flash_id += FLASH_AM320T;
395 info->sector_count = 67;
396 info->size = 0x00400000;
399 case (FLASH_WORD_SIZE)AMD_ID_LV320B:
400 info->flash_id += FLASH_AM320B;
401 info->sector_count = 67;
402 info->size = 0x00400000;
405 case (FLASH_WORD_SIZE)SST_ID_xF800A:
406 info->flash_id += FLASH_SST800A;
407 info->sector_count = 16;
408 info->size = 0x00100000;
411 case (FLASH_WORD_SIZE)SST_ID_xF160A:
412 info->flash_id += FLASH_SST160A;
413 info->sector_count = 32;
414 info->size = 0x00200000;
418 info->flash_id = FLASH_UNKNOWN;
419 return (0); /* => no or unknown flash */
423 /* set up sector start address table */
424 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
425 (info->flash_id == FLASH_AM040) ||
426 (info->flash_id == FLASH_AMD016)) {
427 for (i = 0; i < info->sector_count; i++)
428 info->start[i] = base + (i * 0x00010000);
430 if (info->flash_id & FLASH_BTYPE) {
431 /* set sector offsets for bottom boot block type */
432 info->start[0] = base + 0x00000000;
433 info->start[1] = base + 0x00004000;
434 info->start[2] = base + 0x00006000;
435 info->start[3] = base + 0x00008000;
436 for (i = 4; i < info->sector_count; i++) {
437 info->start[i] = base + (i * 0x00010000) - 0x00030000;
440 /* set sector offsets for top boot block type */
441 i = info->sector_count - 1;
442 info->start[i--] = base + info->size - 0x00004000;
443 info->start[i--] = base + info->size - 0x00006000;
444 info->start[i--] = base + info->size - 0x00008000;
445 for (; i >= 0; i--) {
446 info->start[i] = base + i * 0x00010000;
451 /* check for protected sectors */
452 for (i = 0; i < info->sector_count; i++) {
453 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
454 /* D0 = 1 if protected */
456 addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
457 info->protect[i] = addr2[4] & 1;
459 addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
460 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
461 info->protect[i] = 0;
463 info->protect[i] = addr2[2] & 1;
468 * Prevent writes to uninitialized FLASH.
470 if (info->flash_id != FLASH_UNKNOWN) {
471 #if 0 /* test-only */
473 addr2 = (volatile unsigned char *)info->start[0];
476 addr2[ADDR0] = 0xF0; /* reset bank */
478 addr2 = (FLASH_WORD_SIZE *)info->start[0];
479 *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
481 #else /* test-only */
482 addr2 = (FLASH_WORD_SIZE *)info->start[0];
483 *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
484 #endif /* test-only */
490 int wait_for_DQ7(flash_info_t *info, int sect)
492 ulong start, now, last;
493 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
495 start = get_timer (0);
497 while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
498 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
499 printf ("Timeout\n");
502 /* show that we're waiting */
503 if ((now - last) > 1000) { /* every second */
511 /*-----------------------------------------------------------------------
514 int flash_erase (flash_info_t *info, int s_first, int s_last)
516 volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
517 volatile FLASH_WORD_SIZE *addr2;
518 int flag, prot, sect, l_sect;
521 if ((s_first < 0) || (s_first > s_last)) {
522 if (info->flash_id == FLASH_UNKNOWN) {
523 printf ("- missing\n");
525 printf ("- no sectors to erase\n");
530 if (info->flash_id == FLASH_UNKNOWN) {
531 printf ("Can't erase unknown flash type - aborted\n");
536 for (sect=s_first; sect<=s_last; ++sect) {
537 if (info->protect[sect]) {
543 printf ("- Warning: %d protected sectors will not be erased!\n",
551 /* Disable interrupts which might cause a timeout here */
552 flag = disable_interrupts();
554 /* Start erase on unprotected sectors */
555 for (sect = s_first; sect<=s_last; sect++) {
556 if (info->protect[sect] == 0) { /* not protected */
557 addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
558 printf("Erasing sector %p\n", addr2);
560 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
561 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
562 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
563 addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
564 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
565 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
566 addr2[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */
568 udelay(1000); /* wait 1 ms */
570 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
571 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
572 addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
573 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
574 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
575 addr2[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */
579 * Wait for each sector to complete, it's more
580 * reliable. According to AMD Spec, you must
581 * issue all erase commands within a specified
582 * timeout. This has been seen to fail, especially
583 * if printf()s are included (for debug)!!
585 wait_for_DQ7(info, sect);
589 /* re-enable interrupts if necessary */
593 /* wait at least 80us - let's wait 1 ms */
598 * We wait for the last triggered sector
602 wait_for_DQ7(info, l_sect);
606 /* reset to read mode */
607 addr = (FLASH_WORD_SIZE *)info->start[0];
608 addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
614 /*-----------------------------------------------------------------------
615 * Copy memory to flash, returns:
618 * 2 - Flash not erased
621 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
626 wp = (addr & ~3); /* get lower word aligned address */
629 * handle unaligned start bytes
631 if ((l = addr - wp) != 0) {
633 for (i=0, cp=wp; i<l; ++i, ++cp) {
634 data = (data << 8) | (*(uchar *)cp);
636 for (; i<4 && cnt>0; ++i) {
637 data = (data << 8) | *src++;
641 for (; cnt==0 && i<4; ++i, ++cp) {
642 data = (data << 8) | (*(uchar *)cp);
645 if ((rc = write_word(info, wp, data)) != 0) {
652 * handle word aligned part
656 for (i=0; i<4; ++i) {
657 data = (data << 8) | *src++;
659 if ((rc = write_word(info, wp, data)) != 0) {
671 * handle unaligned tail bytes
674 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
675 data = (data << 8) | *src++;
678 for (; i<4; ++i, ++cp) {
679 data = (data << 8) | (*(uchar *)cp);
682 return (write_word(info, wp, data));
685 /*-----------------------------------------------------------------------
686 * Write a word to Flash, returns:
689 * 2 - Flash not erased
691 static int write_word (flash_info_t * info, ulong dest, ulong data)
693 volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]);
694 volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
695 volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
699 /* Check if Flash is (sufficiently) erased */
700 if ((*((volatile FLASH_WORD_SIZE *) dest) &
701 (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
705 for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
708 /* Disable interrupts which might cause a timeout here */
709 flag = disable_interrupts ();
711 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
712 addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
713 addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
717 /* re-enable interrupts if necessary */
719 enable_interrupts ();
721 /* data polling for D7 */
722 start = get_timer (0);
723 while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
724 (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
726 if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
735 /*-----------------------------------------------------------------------