2 * (C) Copyright 2002-2004
3 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
5 * Copyright (C) 2003 Arabella Software Ltd.
6 * Yuli Barcohen <yuli@arabellasw.com>
12 * Tolunay Orkun <listmember@orkun.us>
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 /* The DEBUG define must be before common to enable debugging */
38 #include <asm/processor.h>
40 #include <asm/byteorder.h>
41 #include <environment.h>
42 #include <mtd/cfi_flash.h>
45 * This file implements a Common Flash Interface (CFI) driver for
48 * The width of the port and the width of the chips are determined at
49 * initialization. These widths are used to calculate the address for
50 * access CFI data structures.
53 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
54 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
55 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
56 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
57 * AMD CFI Specification, Release 2.0 December 1, 2001
58 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
59 * Device IDs, Publication Number 25538 Revision A, November 8, 2001
61 * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
62 * reading and writing ... (yes there is such a Hardware).
65 #ifndef CONFIG_SYS_FLASH_BANKS_LIST
66 #define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
69 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
70 static uint flash_verbose = 1;
72 /* use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined */
73 #ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
74 # define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS_DETECT
76 # define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS
79 flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
82 * Check if chip width is defined. If not, start detecting with 8bit.
84 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
85 #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
88 static void __flash_write8(u8 value, void *addr)
90 __raw_writeb(value, addr);
93 static void __flash_write16(u16 value, void *addr)
95 __raw_writew(value, addr);
98 static void __flash_write32(u32 value, void *addr)
100 __raw_writel(value, addr);
103 static void __flash_write64(u64 value, void *addr)
105 /* No architectures currently implement __raw_writeq() */
106 *(volatile u64 *)addr = value;
109 static u8 __flash_read8(void *addr)
111 return __raw_readb(addr);
114 static u16 __flash_read16(void *addr)
116 return __raw_readw(addr);
119 static u32 __flash_read32(void *addr)
121 return __raw_readl(addr);
124 static u64 __flash_read64(void *addr)
126 /* No architectures currently implement __raw_readq() */
127 return *(volatile u64 *)addr;
130 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
131 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
132 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
133 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
134 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
135 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
136 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
137 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
138 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
140 #define flash_write8 __flash_write8
141 #define flash_write16 __flash_write16
142 #define flash_write32 __flash_write32
143 #define flash_write64 __flash_write64
144 #define flash_read8 __flash_read8
145 #define flash_read16 __flash_read16
146 #define flash_read32 __flash_read32
147 #define flash_read64 __flash_read64
150 /*-----------------------------------------------------------------------
152 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
153 flash_info_t *flash_get_info(ulong base)
156 flash_info_t * info = 0;
158 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
159 info = & flash_info[i];
160 if (info->size && info->start[0] <= base &&
161 base <= info->start[0] + info->size - 1)
165 return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
169 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
171 if (sect != (info->sector_count - 1))
172 return info->start[sect + 1] - info->start[sect];
174 return info->start[0] + info->size - info->start[sect];
177 /*-----------------------------------------------------------------------
178 * create an address based on the offset and the port width
181 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
183 unsigned int byte_offset = offset * info->portwidth;
185 return (void *)(info->start[sect] + byte_offset);
188 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
189 unsigned int offset, void *addr)
193 /*-----------------------------------------------------------------------
194 * make a proper sized command based on the port and chip widths
196 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
201 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
202 u32 cmd_le = cpu_to_le32(cmd);
205 uchar *cp = (uchar *) cmdbuf;
207 for (i = info->portwidth; i > 0; i--){
208 cword_offset = (info->portwidth-i)%info->chipwidth;
209 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
210 cp_offset = info->portwidth - i;
211 val = *((uchar*)&cmd_le + cword_offset);
214 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
216 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
221 /*-----------------------------------------------------------------------
224 static void print_longlong (char *str, unsigned long long data)
230 for (i = 0; i < 8; i++)
231 sprintf (&str[i * 2], "%2.2x", *cp++);
234 static void flash_printqry (struct cfi_qry *qry)
239 for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
241 for (y = 0; y < 16; y++)
242 debug("%2.2x ", p[x + y]);
244 for (y = 0; y < 16; y++) {
245 unsigned char c = p[x + y];
246 if (c >= 0x20 && c <= 0x7e)
257 /*-----------------------------------------------------------------------
258 * read a character at a port width address
260 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
265 cp = flash_map (info, 0, offset);
266 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
267 retval = flash_read8(cp);
269 retval = flash_read8(cp + info->portwidth - 1);
271 flash_unmap (info, 0, offset, cp);
275 /*-----------------------------------------------------------------------
276 * read a word at a port width address, assume 16bit bus
278 static inline ushort flash_read_word (flash_info_t * info, uint offset)
280 ushort *addr, retval;
282 addr = flash_map (info, 0, offset);
283 retval = flash_read16 (addr);
284 flash_unmap (info, 0, offset, addr);
289 /*-----------------------------------------------------------------------
290 * read a long word by picking the least significant byte of each maximum
291 * port size word. Swap for ppc format.
293 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
302 addr = flash_map (info, sect, offset);
305 debug ("long addr is at %p info->portwidth = %d\n", addr,
307 for (x = 0; x < 4 * info->portwidth; x++) {
308 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
311 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
312 retval = ((flash_read8(addr) << 16) |
313 (flash_read8(addr + info->portwidth) << 24) |
314 (flash_read8(addr + 2 * info->portwidth)) |
315 (flash_read8(addr + 3 * info->portwidth) << 8));
317 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
318 (flash_read8(addr + info->portwidth - 1) << 16) |
319 (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
320 (flash_read8(addr + 3 * info->portwidth - 1)));
322 flash_unmap(info, sect, offset, addr);
328 * Write a proper sized command to the correct address
330 void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
331 uint offset, u32 cmd)
337 addr = flash_map (info, sect, offset);
338 flash_make_cmd (info, cmd, &cword);
339 switch (info->portwidth) {
341 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
342 cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
343 flash_write8(cword.c, addr);
345 case FLASH_CFI_16BIT:
346 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
348 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
349 flash_write16(cword.w, addr);
351 case FLASH_CFI_32BIT:
352 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
354 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
355 flash_write32(cword.l, addr);
357 case FLASH_CFI_64BIT:
362 print_longlong (str, cword.ll);
364 debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
366 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
369 flash_write64(cword.ll, addr);
373 /* Ensure all the instructions are fully finished */
376 flash_unmap(info, sect, offset, addr);
379 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
381 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
382 flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
385 /*-----------------------------------------------------------------------
387 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
388 uint offset, uchar cmd)
394 addr = flash_map (info, sect, offset);
395 flash_make_cmd (info, cmd, &cword);
397 debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
398 switch (info->portwidth) {
400 debug ("is= %x %x\n", flash_read8(addr), cword.c);
401 retval = (flash_read8(addr) == cword.c);
403 case FLASH_CFI_16BIT:
404 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
405 retval = (flash_read16(addr) == cword.w);
407 case FLASH_CFI_32BIT:
408 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
409 retval = (flash_read32(addr) == cword.l);
411 case FLASH_CFI_64BIT:
417 print_longlong (str1, flash_read64(addr));
418 print_longlong (str2, cword.ll);
419 debug ("is= %s %s\n", str1, str2);
422 retval = (flash_read64(addr) == cword.ll);
428 flash_unmap(info, sect, offset, addr);
433 /*-----------------------------------------------------------------------
435 static int flash_isset (flash_info_t * info, flash_sect_t sect,
436 uint offset, uchar cmd)
442 addr = flash_map (info, sect, offset);
443 flash_make_cmd (info, cmd, &cword);
444 switch (info->portwidth) {
446 retval = ((flash_read8(addr) & cword.c) == cword.c);
448 case FLASH_CFI_16BIT:
449 retval = ((flash_read16(addr) & cword.w) == cword.w);
451 case FLASH_CFI_32BIT:
452 retval = ((flash_read32(addr) & cword.l) == cword.l);
454 case FLASH_CFI_64BIT:
455 retval = ((flash_read64(addr) & cword.ll) == cword.ll);
461 flash_unmap(info, sect, offset, addr);
466 /*-----------------------------------------------------------------------
468 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
469 uint offset, uchar cmd)
475 addr = flash_map (info, sect, offset);
476 flash_make_cmd (info, cmd, &cword);
477 switch (info->portwidth) {
479 retval = flash_read8(addr) != flash_read8(addr);
481 case FLASH_CFI_16BIT:
482 retval = flash_read16(addr) != flash_read16(addr);
484 case FLASH_CFI_32BIT:
485 retval = flash_read32(addr) != flash_read32(addr);
487 case FLASH_CFI_64BIT:
488 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
489 (flash_read32(addr+4) != flash_read32(addr+4)) );
495 flash_unmap(info, sect, offset, addr);
501 * flash_is_busy - check to see if the flash is busy
503 * This routine checks the status of the chip and returns true if the
506 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
510 switch (info->vendor) {
511 case CFI_CMDSET_INTEL_PROG_REGIONS:
512 case CFI_CMDSET_INTEL_STANDARD:
513 case CFI_CMDSET_INTEL_EXTENDED:
514 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
516 case CFI_CMDSET_AMD_STANDARD:
517 case CFI_CMDSET_AMD_EXTENDED:
518 #ifdef CONFIG_FLASH_CFI_LEGACY
519 case CFI_CMDSET_AMD_LEGACY:
521 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
526 debug ("flash_is_busy: %d\n", retval);
530 /*-----------------------------------------------------------------------
531 * wait for XSR.7 to be set. Time out with an error if it does not.
532 * This routine does not set the flash to read-array mode.
534 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
535 ulong tout, char *prompt)
539 #if CONFIG_SYS_HZ != 1000
540 tout *= CONFIG_SYS_HZ/1000;
543 /* Wait for command completion */
544 start = get_timer (0);
545 while (flash_is_busy (info, sector)) {
546 if (get_timer (start) > tout) {
547 printf ("Flash %s timeout at address %lx data %lx\n",
548 prompt, info->start[sector],
549 flash_read_long (info, sector, 0));
550 flash_write_cmd (info, sector, 0, info->cmd_reset);
553 udelay (1); /* also triggers watchdog */
558 /*-----------------------------------------------------------------------
559 * Wait for XSR.7 to be set, if it times out print an error, otherwise
560 * do a full status check.
562 * This routine sets the flash to read-array mode.
564 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
565 ulong tout, char *prompt)
569 retcode = flash_status_check (info, sector, tout, prompt);
570 switch (info->vendor) {
571 case CFI_CMDSET_INTEL_PROG_REGIONS:
572 case CFI_CMDSET_INTEL_EXTENDED:
573 case CFI_CMDSET_INTEL_STANDARD:
574 if ((retcode != ERR_OK)
575 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
577 printf ("Flash %s error at address %lx\n", prompt,
578 info->start[sector]);
579 if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
580 FLASH_STATUS_PSLBS)) {
581 puts ("Command Sequence Error.\n");
582 } else if (flash_isset (info, sector, 0,
583 FLASH_STATUS_ECLBS)) {
584 puts ("Block Erase Error.\n");
585 retcode = ERR_NOT_ERASED;
586 } else if (flash_isset (info, sector, 0,
587 FLASH_STATUS_PSLBS)) {
588 puts ("Locking Error\n");
590 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
591 puts ("Block locked.\n");
592 retcode = ERR_PROTECTED;
594 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
595 puts ("Vpp Low Error.\n");
597 flash_write_cmd (info, sector, 0, info->cmd_reset);
605 static int use_flash_status_poll(flash_info_t *info)
607 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
608 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
609 info->vendor == CFI_CMDSET_AMD_STANDARD)
615 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
616 ulong tout, char *prompt)
618 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
622 #if CONFIG_SYS_HZ != 1000
623 if ((ulong)CONFIG_SYS_HZ > 100000)
624 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
626 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
629 /* Wait for command completion */
630 start = get_timer(0);
632 switch (info->portwidth) {
634 ready = flash_read8(dst) == flash_read8(src);
636 case FLASH_CFI_16BIT:
637 ready = flash_read16(dst) == flash_read16(src);
639 case FLASH_CFI_32BIT:
640 ready = flash_read32(dst) == flash_read32(src);
642 case FLASH_CFI_64BIT:
643 ready = flash_read64(dst) == flash_read64(src);
651 if (get_timer(start) > tout) {
652 printf("Flash %s timeout at address %lx data %lx\n",
653 prompt, (ulong)dst, (ulong)flash_read8(dst));
656 udelay(1); /* also triggers watchdog */
658 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
662 /*-----------------------------------------------------------------------
664 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
666 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
669 unsigned long long ll;
672 switch (info->portwidth) {
676 case FLASH_CFI_16BIT:
677 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
680 cword->w = (cword->w >> 8) | w;
682 cword->w = (cword->w << 8) | c;
685 case FLASH_CFI_32BIT:
686 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
689 cword->l = (cword->l >> 8) | l;
691 cword->l = (cword->l << 8) | c;
694 case FLASH_CFI_64BIT:
695 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
698 cword->ll = (cword->ll >> 8) | ll;
700 cword->ll = (cword->ll << 8) | c;
707 * Loop through the sector table starting from the previously found sector.
708 * Searches forwards or backwards, dependent on the passed address.
710 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
712 static flash_sect_t saved_sector = 0; /* previously found sector */
713 flash_sect_t sector = saved_sector;
715 while ((info->start[sector] < addr)
716 && (sector < info->sector_count - 1))
718 while ((info->start[sector] > addr) && (sector > 0))
720 * also decrements the sector in case of an overshot
725 saved_sector = sector;
729 /*-----------------------------------------------------------------------
731 static int flash_write_cfiword (flash_info_t * info, ulong dest,
734 void *dstaddr = (void *)dest;
736 flash_sect_t sect = 0;
739 /* Check if Flash is (sufficiently) erased */
740 switch (info->portwidth) {
742 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
744 case FLASH_CFI_16BIT:
745 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
747 case FLASH_CFI_32BIT:
748 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
750 case FLASH_CFI_64BIT:
751 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
758 return ERR_NOT_ERASED;
760 /* Disable interrupts which might cause a timeout here */
761 flag = disable_interrupts ();
763 switch (info->vendor) {
764 case CFI_CMDSET_INTEL_PROG_REGIONS:
765 case CFI_CMDSET_INTEL_EXTENDED:
766 case CFI_CMDSET_INTEL_STANDARD:
767 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
768 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
770 case CFI_CMDSET_AMD_EXTENDED:
771 case CFI_CMDSET_AMD_STANDARD:
772 sect = find_sector(info, dest);
773 flash_unlock_seq (info, sect);
774 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
777 #ifdef CONFIG_FLASH_CFI_LEGACY
778 case CFI_CMDSET_AMD_LEGACY:
779 sect = find_sector(info, dest);
780 flash_unlock_seq (info, 0);
781 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
787 switch (info->portwidth) {
789 flash_write8(cword.c, dstaddr);
791 case FLASH_CFI_16BIT:
792 flash_write16(cword.w, dstaddr);
794 case FLASH_CFI_32BIT:
795 flash_write32(cword.l, dstaddr);
797 case FLASH_CFI_64BIT:
798 flash_write64(cword.ll, dstaddr);
802 /* re-enable interrupts if necessary */
804 enable_interrupts ();
807 sect = find_sector (info, dest);
809 if (use_flash_status_poll(info))
810 return flash_status_poll(info, &cword, dstaddr,
811 info->write_tout, "write");
813 return flash_full_status_check(info, sect,
814 info->write_tout, "write");
817 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
819 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
826 void *dst = (void *)dest;
833 switch (info->portwidth) {
837 case FLASH_CFI_16BIT:
840 case FLASH_CFI_32BIT:
843 case FLASH_CFI_64BIT:
853 while ((cnt-- > 0) && (flag == 0)) {
854 switch (info->portwidth) {
856 flag = ((flash_read8(dst2) & flash_read8(src)) ==
860 case FLASH_CFI_16BIT:
861 flag = ((flash_read16(dst2) & flash_read16(src)) ==
865 case FLASH_CFI_32BIT:
866 flag = ((flash_read32(dst2) & flash_read32(src)) ==
870 case FLASH_CFI_64BIT:
871 flag = ((flash_read64(dst2) & flash_read64(src)) ==
878 retcode = ERR_NOT_ERASED;
883 sector = find_sector (info, dest);
885 switch (info->vendor) {
886 case CFI_CMDSET_INTEL_PROG_REGIONS:
887 case CFI_CMDSET_INTEL_STANDARD:
888 case CFI_CMDSET_INTEL_EXTENDED:
889 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
890 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
891 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
892 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
893 flash_write_cmd (info, sector, 0, write_cmd);
894 retcode = flash_status_check (info, sector,
895 info->buffer_write_tout,
897 if (retcode == ERR_OK) {
898 /* reduce the number of loops by the width of
901 flash_write_cmd (info, sector, 0, cnt - 1);
903 switch (info->portwidth) {
905 flash_write8(flash_read8(src), dst);
908 case FLASH_CFI_16BIT:
909 flash_write16(flash_read16(src), dst);
912 case FLASH_CFI_32BIT:
913 flash_write32(flash_read32(src), dst);
916 case FLASH_CFI_64BIT:
917 flash_write64(flash_read64(src), dst);
925 flash_write_cmd (info, sector, 0,
926 FLASH_CMD_WRITE_BUFFER_CONFIRM);
927 retcode = flash_full_status_check (
928 info, sector, info->buffer_write_tout,
934 case CFI_CMDSET_AMD_STANDARD:
935 case CFI_CMDSET_AMD_EXTENDED:
936 flash_unlock_seq(info,0);
938 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
939 offset = ((unsigned long)dst - info->start[sector]) >> shift;
941 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
943 flash_write_cmd(info, sector, offset, cnt - 1);
945 switch (info->portwidth) {
948 flash_write8(flash_read8(src), dst);
952 case FLASH_CFI_16BIT:
954 flash_write16(flash_read16(src), dst);
958 case FLASH_CFI_32BIT:
960 flash_write32(flash_read32(src), dst);
964 case FLASH_CFI_64BIT:
966 flash_write64(flash_read64(src), dst);
975 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
976 if (use_flash_status_poll(info))
977 retcode = flash_status_poll(info, src - (1 << shift),
979 info->buffer_write_tout,
982 retcode = flash_full_status_check(info, sector,
983 info->buffer_write_tout,
988 debug ("Unknown Command Set\n");
996 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
999 /*-----------------------------------------------------------------------
1001 int flash_erase (flash_info_t * info, int s_first, int s_last)
1008 if (info->flash_id != FLASH_MAN_CFI) {
1009 puts ("Can't erase unknown flash type - aborted\n");
1012 if ((s_first < 0) || (s_first > s_last)) {
1013 puts ("- no sectors to erase\n");
1018 for (sect = s_first; sect <= s_last; ++sect) {
1019 if (info->protect[sect]) {
1024 printf ("- Warning: %d protected sectors will not be erased!\n",
1026 } else if (flash_verbose) {
1031 for (sect = s_first; sect <= s_last; sect++) {
1032 if (info->protect[sect] == 0) { /* not protected */
1033 switch (info->vendor) {
1034 case CFI_CMDSET_INTEL_PROG_REGIONS:
1035 case CFI_CMDSET_INTEL_STANDARD:
1036 case CFI_CMDSET_INTEL_EXTENDED:
1037 flash_write_cmd (info, sect, 0,
1038 FLASH_CMD_CLEAR_STATUS);
1039 flash_write_cmd (info, sect, 0,
1040 FLASH_CMD_BLOCK_ERASE);
1041 flash_write_cmd (info, sect, 0,
1042 FLASH_CMD_ERASE_CONFIRM);
1044 case CFI_CMDSET_AMD_STANDARD:
1045 case CFI_CMDSET_AMD_EXTENDED:
1046 flash_unlock_seq (info, sect);
1047 flash_write_cmd (info, sect,
1049 AMD_CMD_ERASE_START);
1050 flash_unlock_seq (info, sect);
1051 flash_write_cmd (info, sect, 0,
1052 AMD_CMD_ERASE_SECTOR);
1054 #ifdef CONFIG_FLASH_CFI_LEGACY
1055 case CFI_CMDSET_AMD_LEGACY:
1056 flash_unlock_seq (info, 0);
1057 flash_write_cmd (info, 0, info->addr_unlock1,
1058 AMD_CMD_ERASE_START);
1059 flash_unlock_seq (info, 0);
1060 flash_write_cmd (info, sect, 0,
1061 AMD_CMD_ERASE_SECTOR);
1065 debug ("Unkown flash vendor %d\n",
1070 if (use_flash_status_poll(info)) {
1071 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL;
1073 dest = flash_map(info, sect, 0);
1074 st = flash_status_poll(info, &cword, dest,
1075 info->erase_blk_tout, "erase");
1076 flash_unmap(info, sect, 0, dest);
1078 st = flash_full_status_check(info, sect,
1079 info->erase_blk_tout,
1083 else if (flash_verbose)
1094 /*-----------------------------------------------------------------------
1096 void flash_print_info (flash_info_t * info)
1100 if (info->flash_id != FLASH_MAN_CFI) {
1101 puts ("missing or unknown FLASH type\n");
1105 printf ("%s FLASH (%d x %d)",
1107 (info->portwidth << 3), (info->chipwidth << 3));
1108 if (info->size < 1024*1024)
1109 printf (" Size: %ld kB in %d Sectors\n",
1110 info->size >> 10, info->sector_count);
1112 printf (" Size: %ld MB in %d Sectors\n",
1113 info->size >> 20, info->sector_count);
1115 switch (info->vendor) {
1116 case CFI_CMDSET_INTEL_PROG_REGIONS:
1117 printf ("Intel Prog Regions");
1119 case CFI_CMDSET_INTEL_STANDARD:
1120 printf ("Intel Standard");
1122 case CFI_CMDSET_INTEL_EXTENDED:
1123 printf ("Intel Extended");
1125 case CFI_CMDSET_AMD_STANDARD:
1126 printf ("AMD Standard");
1128 case CFI_CMDSET_AMD_EXTENDED:
1129 printf ("AMD Extended");
1131 #ifdef CONFIG_FLASH_CFI_LEGACY
1132 case CFI_CMDSET_AMD_LEGACY:
1133 printf ("AMD Legacy");
1137 printf ("Unknown (%d)", info->vendor);
1140 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1141 info->manufacturer_id, info->device_id);
1142 if (info->device_id == 0x7E) {
1143 printf("%04X", info->device_id2);
1145 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1146 info->erase_blk_tout,
1148 if (info->buffer_size > 1) {
1149 printf (" Buffer write timeout: %ld ms, "
1150 "buffer size: %d bytes\n",
1151 info->buffer_write_tout,
1155 puts ("\n Sector Start Addresses:");
1156 for (i = 0; i < info->sector_count; ++i) {
1159 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1163 volatile unsigned long *flash;
1166 * Check if whole sector is erased
1168 size = flash_sector_size(info, i);
1170 flash = (volatile unsigned long *) info->start[i];
1171 size = size >> 2; /* divide by 4 for longword access */
1172 for (k = 0; k < size; k++) {
1173 if (*flash++ != 0xffffffff) {
1179 /* print empty and read-only info */
1180 printf (" %08lX %c %s ",
1183 info->protect[i] ? "RO" : " ");
1184 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1185 printf (" %08lX %s ",
1187 info->protect[i] ? "RO" : " ");
1194 /*-----------------------------------------------------------------------
1195 * This is used in a few places in write_buf() to show programming
1196 * progress. Making it a function is nasty because it needs to do side
1197 * effect updates to digit and dots. Repeated code is nasty too, so
1198 * we define it once here.
1200 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1201 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1202 if (flash_verbose) { \
1204 if ((scale > 0) && (dots <= 0)) { \
1205 if ((digit % 5) == 0) \
1206 printf ("%d", digit / 5); \
1214 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1217 /*-----------------------------------------------------------------------
1218 * Copy memory to flash, returns:
1221 * 2 - Flash not erased
1223 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1230 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1233 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1234 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1239 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1241 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1242 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1243 CONFIG_FLASH_SHOW_PROGRESS);
1247 /* get lower aligned address */
1248 wp = (addr & ~(info->portwidth - 1));
1250 /* handle unaligned start */
1251 if ((aln = addr - wp) != 0) {
1254 for (i = 0; i < aln; ++i)
1255 flash_add_byte (info, &cword, flash_read8(p + i));
1257 for (; (i < info->portwidth) && (cnt > 0); i++) {
1258 flash_add_byte (info, &cword, *src++);
1261 for (; (cnt == 0) && (i < info->portwidth); ++i)
1262 flash_add_byte (info, &cword, flash_read8(p + i));
1264 rc = flash_write_cfiword (info, wp, cword);
1269 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1272 /* handle the aligned part */
1273 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1274 buffered_size = (info->portwidth / info->chipwidth);
1275 buffered_size *= info->buffer_size;
1276 while (cnt >= info->portwidth) {
1277 /* prohibit buffer write when buffer_size is 1 */
1278 if (info->buffer_size == 1) {
1280 for (i = 0; i < info->portwidth; i++)
1281 flash_add_byte (info, &cword, *src++);
1282 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1284 wp += info->portwidth;
1285 cnt -= info->portwidth;
1289 /* write buffer until next buffered_size aligned boundary */
1290 i = buffered_size - (wp % buffered_size);
1293 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1295 i -= i & (info->portwidth - 1);
1299 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1302 while (cnt >= info->portwidth) {
1304 for (i = 0; i < info->portwidth; i++) {
1305 flash_add_byte (info, &cword, *src++);
1307 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1309 wp += info->portwidth;
1310 cnt -= info->portwidth;
1311 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1313 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1320 * handle unaligned tail bytes
1324 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1325 flash_add_byte (info, &cword, *src++);
1328 for (; i < info->portwidth; ++i)
1329 flash_add_byte (info, &cword, flash_read8(p + i));
1331 return flash_write_cfiword (info, wp, cword);
1334 /*-----------------------------------------------------------------------
1336 #ifdef CONFIG_SYS_FLASH_PROTECTION
1338 int flash_real_protect (flash_info_t * info, long sector, int prot)
1342 switch (info->vendor) {
1343 case CFI_CMDSET_INTEL_PROG_REGIONS:
1344 case CFI_CMDSET_INTEL_STANDARD:
1345 case CFI_CMDSET_INTEL_EXTENDED:
1346 flash_write_cmd (info, sector, 0,
1347 FLASH_CMD_CLEAR_STATUS);
1348 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1350 flash_write_cmd (info, sector, 0,
1351 FLASH_CMD_PROTECT_SET);
1353 flash_write_cmd (info, sector, 0,
1354 FLASH_CMD_PROTECT_CLEAR);
1356 case CFI_CMDSET_AMD_EXTENDED:
1357 case CFI_CMDSET_AMD_STANDARD:
1358 /* U-Boot only checks the first byte */
1359 if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1361 flash_unlock_seq (info, 0);
1362 flash_write_cmd (info, 0,
1364 ATM_CMD_SOFTLOCK_START);
1365 flash_unlock_seq (info, 0);
1366 flash_write_cmd (info, sector, 0,
1369 flash_write_cmd (info, 0,
1371 AMD_CMD_UNLOCK_START);
1372 if (info->device_id == ATM_ID_BV6416)
1373 flash_write_cmd (info, sector,
1374 0, ATM_CMD_UNLOCK_SECT);
1378 #ifdef CONFIG_FLASH_CFI_LEGACY
1379 case CFI_CMDSET_AMD_LEGACY:
1380 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1381 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1383 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1385 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1390 flash_full_status_check (info, sector, info->erase_blk_tout,
1391 prot ? "protect" : "unprotect")) == 0) {
1393 info->protect[sector] = prot;
1396 * On some of Intel's flash chips (marked via legacy_unlock)
1397 * unprotect unprotects all locking.
1399 if ((prot == 0) && (info->legacy_unlock)) {
1402 for (i = 0; i < info->sector_count; i++) {
1403 if (info->protect[i])
1404 flash_real_protect (info, i, 1);
1411 /*-----------------------------------------------------------------------
1412 * flash_read_user_serial - read the OneTimeProgramming cells
1414 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1421 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1422 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1423 memcpy (dst, src + offset, len);
1424 flash_write_cmd (info, 0, 0, info->cmd_reset);
1425 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1429 * flash_read_factory_serial - read the device Id from the protection area
1431 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1436 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1437 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1438 memcpy (buffer, src + offset, len);
1439 flash_write_cmd (info, 0, 0, info->cmd_reset);
1440 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1443 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1445 /*-----------------------------------------------------------------------
1446 * Reverse the order of the erase regions in the CFI QRY structure.
1447 * This is needed for chips that are either a) correctly detected as
1448 * top-boot, or b) buggy.
1450 static void cfi_reverse_geometry(struct cfi_qry *qry)
1455 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1456 tmp = qry->erase_region_info[i];
1457 qry->erase_region_info[i] = qry->erase_region_info[j];
1458 qry->erase_region_info[j] = tmp;
1462 /*-----------------------------------------------------------------------
1463 * read jedec ids from device and set corresponding fields in info struct
1465 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1468 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1470 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1471 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1472 udelay(1000); /* some flash are slow to respond */
1473 info->manufacturer_id = flash_read_uchar (info,
1474 FLASH_OFFSET_MANUFACTURER_ID);
1475 info->device_id = flash_read_uchar (info,
1476 FLASH_OFFSET_DEVICE_ID);
1477 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1480 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1482 info->cmd_reset = FLASH_CMD_RESET;
1484 cmdset_intel_read_jedec_ids(info);
1485 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1487 #ifdef CONFIG_SYS_FLASH_PROTECTION
1488 /* read legacy lock/unlock bit from intel flash */
1489 if (info->ext_addr) {
1490 info->legacy_unlock = flash_read_uchar (info,
1491 info->ext_addr + 5) & 0x08;
1498 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1503 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1504 flash_unlock_seq(info, 0);
1505 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1506 udelay(1000); /* some flash are slow to respond */
1508 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1509 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1510 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1512 manuId = flash_read_uchar (info,
1513 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1515 info->manufacturer_id = manuId;
1517 switch (info->chipwidth){
1518 case FLASH_CFI_8BIT:
1519 info->device_id = flash_read_uchar (info,
1520 FLASH_OFFSET_DEVICE_ID);
1521 if (info->device_id == 0x7E) {
1522 /* AMD 3-byte (expanded) device ids */
1523 info->device_id2 = flash_read_uchar (info,
1524 FLASH_OFFSET_DEVICE_ID2);
1525 info->device_id2 <<= 8;
1526 info->device_id2 |= flash_read_uchar (info,
1527 FLASH_OFFSET_DEVICE_ID3);
1530 case FLASH_CFI_16BIT:
1531 info->device_id = flash_read_word (info,
1532 FLASH_OFFSET_DEVICE_ID);
1537 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1540 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1542 info->cmd_reset = AMD_CMD_RESET;
1544 cmdset_amd_read_jedec_ids(info);
1545 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1550 #ifdef CONFIG_FLASH_CFI_LEGACY
1551 static void flash_read_jedec_ids (flash_info_t * info)
1553 info->manufacturer_id = 0;
1554 info->device_id = 0;
1555 info->device_id2 = 0;
1557 switch (info->vendor) {
1558 case CFI_CMDSET_INTEL_PROG_REGIONS:
1559 case CFI_CMDSET_INTEL_STANDARD:
1560 case CFI_CMDSET_INTEL_EXTENDED:
1561 cmdset_intel_read_jedec_ids(info);
1563 case CFI_CMDSET_AMD_STANDARD:
1564 case CFI_CMDSET_AMD_EXTENDED:
1565 cmdset_amd_read_jedec_ids(info);
1572 /*-----------------------------------------------------------------------
1573 * Call board code to request info about non-CFI flash.
1574 * board_flash_get_legacy needs to fill in at least:
1575 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1577 static int flash_detect_legacy(phys_addr_t base, int banknum)
1579 flash_info_t *info = &flash_info[banknum];
1581 if (board_flash_get_legacy(base, banknum, info)) {
1582 /* board code may have filled info completely. If not, we
1583 use JEDEC ID probing. */
1584 if (!info->vendor) {
1586 CFI_CMDSET_AMD_STANDARD,
1587 CFI_CMDSET_INTEL_STANDARD
1591 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1592 info->vendor = modes[i];
1594 (ulong)map_physmem(base,
1597 if (info->portwidth == FLASH_CFI_8BIT
1598 && info->interface == FLASH_CFI_X8X16) {
1599 info->addr_unlock1 = 0x2AAA;
1600 info->addr_unlock2 = 0x5555;
1602 info->addr_unlock1 = 0x5555;
1603 info->addr_unlock2 = 0x2AAA;
1605 flash_read_jedec_ids(info);
1606 debug("JEDEC PROBE: ID %x %x %x\n",
1607 info->manufacturer_id,
1610 if (jedec_flash_match(info, info->start[0]))
1613 unmap_physmem((void *)info->start[0],
1618 switch(info->vendor) {
1619 case CFI_CMDSET_INTEL_PROG_REGIONS:
1620 case CFI_CMDSET_INTEL_STANDARD:
1621 case CFI_CMDSET_INTEL_EXTENDED:
1622 info->cmd_reset = FLASH_CMD_RESET;
1624 case CFI_CMDSET_AMD_STANDARD:
1625 case CFI_CMDSET_AMD_EXTENDED:
1626 case CFI_CMDSET_AMD_LEGACY:
1627 info->cmd_reset = AMD_CMD_RESET;
1630 info->flash_id = FLASH_MAN_CFI;
1633 return 0; /* use CFI */
1636 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1638 return 0; /* use CFI */
1642 /*-----------------------------------------------------------------------
1643 * detect if flash is compatible with the Common Flash Interface (CFI)
1644 * http://www.jedec.org/download/search/jesd68.pdf
1646 static void flash_read_cfi (flash_info_t *info, void *buf,
1647 unsigned int start, size_t len)
1652 for (i = 0; i < len; i++)
1653 p[i] = flash_read_uchar(info, start + i);
1656 void __flash_cmd_reset(flash_info_t *info)
1659 * We do not yet know what kind of commandset to use, so we issue
1660 * the reset command in both Intel and AMD variants, in the hope
1661 * that AMD flash roms ignore the Intel command.
1663 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1664 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1666 void flash_cmd_reset(flash_info_t *info)
1667 __attribute__((weak,alias("__flash_cmd_reset")));
1669 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1673 /* Issue FLASH reset command */
1674 flash_cmd_reset(info);
1677 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1679 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1681 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1682 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1683 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1684 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1685 sizeof(struct cfi_qry));
1686 info->interface = le16_to_cpu(qry->interface_desc);
1688 info->cfi_offset = flash_offset_cfi[cfi_offset];
1689 debug ("device interface is %d\n",
1691 debug ("found port %d chip %d ",
1692 info->portwidth, info->chipwidth);
1693 debug ("port %d bits chip %d bits\n",
1694 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1695 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1697 /* calculate command offsets as in the Linux driver */
1698 info->addr_unlock1 = 0x555;
1699 info->addr_unlock2 = 0x2aa;
1702 * modify the unlock address if we are
1703 * in compatibility mode
1705 if ( /* x8/x16 in x8 mode */
1706 ((info->chipwidth == FLASH_CFI_BY8) &&
1707 (info->interface == FLASH_CFI_X8X16)) ||
1708 /* x16/x32 in x16 mode */
1709 ((info->chipwidth == FLASH_CFI_BY16) &&
1710 (info->interface == FLASH_CFI_X16X32)))
1712 info->addr_unlock1 = 0xaaa;
1713 info->addr_unlock2 = 0x555;
1716 info->name = "CFI conformant";
1724 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1726 debug ("flash detect cfi\n");
1728 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1729 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1730 for (info->chipwidth = FLASH_CFI_BY8;
1731 info->chipwidth <= info->portwidth;
1732 info->chipwidth <<= 1)
1733 if (__flash_detect_cfi(info, qry))
1736 debug ("not found\n");
1741 * Manufacturer-specific quirks. Add workarounds for geometry
1742 * reversal, etc. here.
1744 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1746 /* check if flash geometry needs reversal */
1747 if (qry->num_erase_regions > 1) {
1748 /* reverse geometry if top boot part */
1749 if (info->cfi_version < 0x3131) {
1750 /* CFI < 1.1, try to guess from device id */
1751 if ((info->device_id & 0x80) != 0)
1752 cfi_reverse_geometry(qry);
1753 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1754 /* CFI >= 1.1, deduct from top/bottom flag */
1755 /* note: ext_addr is valid since cfi_version > 0 */
1756 cfi_reverse_geometry(qry);
1761 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1763 int reverse_geometry = 0;
1765 /* Check the "top boot" bit in the PRI */
1766 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1767 reverse_geometry = 1;
1769 /* AT49BV6416(T) list the erase regions in the wrong order.
1770 * However, the device ID is identical with the non-broken
1771 * AT49BV642D they differ in the high byte.
1773 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1774 reverse_geometry = !reverse_geometry;
1776 if (reverse_geometry)
1777 cfi_reverse_geometry(qry);
1780 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1782 /* check if flash geometry needs reversal */
1783 if (qry->num_erase_regions > 1) {
1784 /* reverse geometry if top boot part */
1785 if (info->cfi_version < 0x3131) {
1786 /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1787 if (info->device_id == 0x22CA ||
1788 info->device_id == 0x2256) {
1789 cfi_reverse_geometry(qry);
1796 * The following code cannot be run from FLASH!
1799 ulong flash_get_size (phys_addr_t base, int banknum)
1801 flash_info_t *info = &flash_info[banknum];
1803 flash_sect_t sect_cnt;
1807 uchar num_erase_regions;
1808 int erase_region_size;
1809 int erase_region_count;
1812 memset(&qry, 0, sizeof(qry));
1815 info->cfi_version = 0;
1816 #ifdef CONFIG_SYS_FLASH_PROTECTION
1817 info->legacy_unlock = 0;
1820 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1822 if (flash_detect_cfi (info, &qry)) {
1823 info->vendor = le16_to_cpu(qry.p_id);
1824 info->ext_addr = le16_to_cpu(qry.p_adr);
1825 num_erase_regions = qry.num_erase_regions;
1827 if (info->ext_addr) {
1828 info->cfi_version = (ushort) flash_read_uchar (info,
1829 info->ext_addr + 3) << 8;
1830 info->cfi_version |= (ushort) flash_read_uchar (info,
1831 info->ext_addr + 4);
1835 flash_printqry (&qry);
1838 switch (info->vendor) {
1839 case CFI_CMDSET_INTEL_PROG_REGIONS:
1840 case CFI_CMDSET_INTEL_STANDARD:
1841 case CFI_CMDSET_INTEL_EXTENDED:
1842 cmdset_intel_init(info, &qry);
1844 case CFI_CMDSET_AMD_STANDARD:
1845 case CFI_CMDSET_AMD_EXTENDED:
1846 cmdset_amd_init(info, &qry);
1849 printf("CFI: Unknown command set 0x%x\n",
1852 * Unfortunately, this means we don't know how
1853 * to get the chip back to Read mode. Might
1854 * as well try an Intel-style reset...
1856 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1860 /* Do manufacturer-specific fixups */
1861 switch (info->manufacturer_id) {
1863 flash_fixup_amd(info, &qry);
1866 flash_fixup_atmel(info, &qry);
1869 flash_fixup_stm(info, &qry);
1873 debug ("manufacturer is %d\n", info->vendor);
1874 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1875 debug ("device id is 0x%x\n", info->device_id);
1876 debug ("device id2 is 0x%x\n", info->device_id2);
1877 debug ("cfi version is 0x%04x\n", info->cfi_version);
1879 size_ratio = info->portwidth / info->chipwidth;
1880 /* if the chip is x8/x16 reduce the ratio by half */
1881 if ((info->interface == FLASH_CFI_X8X16)
1882 && (info->chipwidth == FLASH_CFI_BY8)) {
1885 debug ("size_ratio %d port %d bits chip %d bits\n",
1886 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1887 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1888 debug ("found %d erase regions\n", num_erase_regions);
1891 for (i = 0; i < num_erase_regions; i++) {
1892 if (i > NUM_ERASE_REGIONS) {
1893 printf ("%d erase regions found, only %d used\n",
1894 num_erase_regions, NUM_ERASE_REGIONS);
1898 tmp = le32_to_cpu(qry.erase_region_info[i]);
1899 debug("erase region %u: 0x%08lx\n", i, tmp);
1901 erase_region_count = (tmp & 0xffff) + 1;
1904 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1905 debug ("erase_region_count = %d erase_region_size = %d\n",
1906 erase_region_count, erase_region_size);
1907 for (j = 0; j < erase_region_count; j++) {
1908 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1909 printf("ERROR: too many flash sectors\n");
1912 info->start[sect_cnt] =
1913 (ulong)map_physmem(sector,
1916 sector += (erase_region_size * size_ratio);
1919 * Only read protection status from
1920 * supported devices (intel...)
1922 switch (info->vendor) {
1923 case CFI_CMDSET_INTEL_PROG_REGIONS:
1924 case CFI_CMDSET_INTEL_EXTENDED:
1925 case CFI_CMDSET_INTEL_STANDARD:
1926 info->protect[sect_cnt] =
1927 flash_isset (info, sect_cnt,
1928 FLASH_OFFSET_PROTECT,
1929 FLASH_STATUS_PROTECT);
1932 /* default: not protected */
1933 info->protect[sect_cnt] = 0;
1940 info->sector_count = sect_cnt;
1941 info->size = 1 << qry.dev_size;
1942 /* multiply the size by the number of chips */
1943 info->size *= size_ratio;
1944 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1945 tmp = 1 << qry.block_erase_timeout_typ;
1946 info->erase_blk_tout = tmp *
1947 (1 << qry.block_erase_timeout_max);
1948 tmp = (1 << qry.buf_write_timeout_typ) *
1949 (1 << qry.buf_write_timeout_max);
1951 /* round up when converting to ms */
1952 info->buffer_write_tout = (tmp + 999) / 1000;
1953 tmp = (1 << qry.word_write_timeout_typ) *
1954 (1 << qry.word_write_timeout_max);
1955 /* round up when converting to ms */
1956 info->write_tout = (tmp + 999) / 1000;
1957 info->flash_id = FLASH_MAN_CFI;
1958 if ((info->interface == FLASH_CFI_X8X16) &&
1959 (info->chipwidth == FLASH_CFI_BY8)) {
1960 /* XXX - Need to test on x8/x16 in parallel. */
1961 info->portwidth >>= 1;
1964 flash_write_cmd (info, 0, 0, info->cmd_reset);
1967 return (info->size);
1970 void flash_set_verbose(uint v)
1975 /*-----------------------------------------------------------------------
1977 unsigned long flash_init (void)
1979 unsigned long size = 0;
1981 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
1985 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
1988 #ifdef CONFIG_SYS_FLASH_PROTECTION
1989 /* read environment from EEPROM */
1991 getenv_r ("unlock", s, sizeof(s));
1994 #define BANK_BASE(i) (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])
1996 /* Init: no FLASHes known */
1997 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1998 flash_info[i].flash_id = FLASH_UNKNOWN;
2000 if (!flash_detect_legacy (BANK_BASE(i), i))
2001 flash_get_size (BANK_BASE(i), i);
2002 size += flash_info[i].size;
2003 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2004 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2005 printf ("## Unknown FLASH on Bank %d "
2006 "- Size = 0x%08lx = %ld MB\n",
2007 i+1, flash_info[i].size,
2008 flash_info[i].size << 20);
2009 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2011 #ifdef CONFIG_SYS_FLASH_PROTECTION
2012 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2014 * Only the U-Boot image and it's environment
2015 * is protected, all other sectors are
2016 * unprotected (unlocked) if flash hardware
2017 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2018 * and the environment variable "unlock" is
2021 if (flash_info[i].legacy_unlock) {
2025 * Disable legacy_unlock temporarily,
2026 * since flash_real_protect would
2027 * relock all other sectors again
2030 flash_info[i].legacy_unlock = 0;
2033 * Legacy unlocking (e.g. Intel J3) ->
2034 * unlock only one sector. This will
2035 * unlock all sectors.
2037 flash_real_protect (&flash_info[i], 0, 0);
2039 flash_info[i].legacy_unlock = 1;
2042 * Manually mark other sectors as
2043 * unlocked (unprotected)
2045 for (k = 1; k < flash_info[i].sector_count; k++)
2046 flash_info[i].protect[k] = 0;
2049 * No legancy unlocking -> unlock all sectors
2051 flash_protect (FLAG_PROTECT_CLEAR,
2052 flash_info[i].start[0],
2053 flash_info[i].start[0]
2054 + flash_info[i].size - 1,
2058 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2061 /* Monitor protection ON by default */
2062 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2063 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2064 flash_protect (FLAG_PROTECT_SET,
2065 CONFIG_SYS_MONITOR_BASE,
2066 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2067 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2070 /* Environment protection ON by default */
2071 #ifdef CONFIG_ENV_IS_IN_FLASH
2072 flash_protect (FLAG_PROTECT_SET,
2074 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2075 flash_get_info(CONFIG_ENV_ADDR));
2078 /* Redundant environment protection ON by default */
2079 #ifdef CONFIG_ENV_ADDR_REDUND
2080 flash_protect (FLAG_PROTECT_SET,
2081 CONFIG_ENV_ADDR_REDUND,
2082 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2083 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2086 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2087 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2088 debug("autoprotecting from %08x to %08x\n",
2089 apl[i].start, apl[i].start + apl[i].size - 1);
2090 flash_protect (FLAG_PROTECT_SET,
2092 apl[i].start + apl[i].size - 1,
2093 flash_get_info(apl[i].start));
2097 #ifdef CONFIG_FLASH_CFI_MTD