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 /*-----------------------------------------------------------------------
607 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
609 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
612 unsigned long long ll;
615 switch (info->portwidth) {
619 case FLASH_CFI_16BIT:
620 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
623 cword->w = (cword->w >> 8) | w;
625 cword->w = (cword->w << 8) | c;
628 case FLASH_CFI_32BIT:
629 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
632 cword->l = (cword->l >> 8) | l;
634 cword->l = (cword->l << 8) | c;
637 case FLASH_CFI_64BIT:
638 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
641 cword->ll = (cword->ll >> 8) | ll;
643 cword->ll = (cword->ll << 8) | c;
650 * Loop through the sector table starting from the previously found sector.
651 * Searches forwards or backwards, dependent on the passed address.
653 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
655 static flash_sect_t saved_sector = 0; /* previously found sector */
656 flash_sect_t sector = saved_sector;
658 while ((info->start[sector] < addr)
659 && (sector < info->sector_count - 1))
661 while ((info->start[sector] > addr) && (sector > 0))
663 * also decrements the sector in case of an overshot
668 saved_sector = sector;
672 /*-----------------------------------------------------------------------
674 static int flash_write_cfiword (flash_info_t * info, ulong dest,
677 void *dstaddr = (void *)dest;
679 flash_sect_t sect = 0;
682 /* Check if Flash is (sufficiently) erased */
683 switch (info->portwidth) {
685 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
687 case FLASH_CFI_16BIT:
688 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
690 case FLASH_CFI_32BIT:
691 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
693 case FLASH_CFI_64BIT:
694 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
701 return ERR_NOT_ERASED;
703 /* Disable interrupts which might cause a timeout here */
704 flag = disable_interrupts ();
706 switch (info->vendor) {
707 case CFI_CMDSET_INTEL_PROG_REGIONS:
708 case CFI_CMDSET_INTEL_EXTENDED:
709 case CFI_CMDSET_INTEL_STANDARD:
710 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
711 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
713 case CFI_CMDSET_AMD_EXTENDED:
714 case CFI_CMDSET_AMD_STANDARD:
715 sect = find_sector(info, dest);
716 flash_unlock_seq (info, sect);
717 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
720 #ifdef CONFIG_FLASH_CFI_LEGACY
721 case CFI_CMDSET_AMD_LEGACY:
722 sect = find_sector(info, dest);
723 flash_unlock_seq (info, 0);
724 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
730 switch (info->portwidth) {
732 flash_write8(cword.c, dstaddr);
734 case FLASH_CFI_16BIT:
735 flash_write16(cword.w, dstaddr);
737 case FLASH_CFI_32BIT:
738 flash_write32(cword.l, dstaddr);
740 case FLASH_CFI_64BIT:
741 flash_write64(cword.ll, dstaddr);
745 /* re-enable interrupts if necessary */
747 enable_interrupts ();
750 sect = find_sector (info, dest);
752 return flash_full_status_check (info, sect, info->write_tout, "write");
755 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
757 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
764 void *dst = (void *)dest;
771 switch (info->portwidth) {
775 case FLASH_CFI_16BIT:
778 case FLASH_CFI_32BIT:
781 case FLASH_CFI_64BIT:
791 while ((cnt-- > 0) && (flag == 0)) {
792 switch (info->portwidth) {
794 flag = ((flash_read8(dst2) & flash_read8(src)) ==
798 case FLASH_CFI_16BIT:
799 flag = ((flash_read16(dst2) & flash_read16(src)) ==
803 case FLASH_CFI_32BIT:
804 flag = ((flash_read32(dst2) & flash_read32(src)) ==
808 case FLASH_CFI_64BIT:
809 flag = ((flash_read64(dst2) & flash_read64(src)) ==
816 retcode = ERR_NOT_ERASED;
821 sector = find_sector (info, dest);
823 switch (info->vendor) {
824 case CFI_CMDSET_INTEL_PROG_REGIONS:
825 case CFI_CMDSET_INTEL_STANDARD:
826 case CFI_CMDSET_INTEL_EXTENDED:
827 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
828 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
829 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
830 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
831 flash_write_cmd (info, sector, 0, write_cmd);
832 retcode = flash_status_check (info, sector,
833 info->buffer_write_tout,
835 if (retcode == ERR_OK) {
836 /* reduce the number of loops by the width of
839 flash_write_cmd (info, sector, 0, cnt - 1);
841 switch (info->portwidth) {
843 flash_write8(flash_read8(src), dst);
846 case FLASH_CFI_16BIT:
847 flash_write16(flash_read16(src), dst);
850 case FLASH_CFI_32BIT:
851 flash_write32(flash_read32(src), dst);
854 case FLASH_CFI_64BIT:
855 flash_write64(flash_read64(src), dst);
863 flash_write_cmd (info, sector, 0,
864 FLASH_CMD_WRITE_BUFFER_CONFIRM);
865 retcode = flash_full_status_check (
866 info, sector, info->buffer_write_tout,
872 case CFI_CMDSET_AMD_STANDARD:
873 case CFI_CMDSET_AMD_EXTENDED:
874 flash_unlock_seq(info,0);
876 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
877 offset = ((unsigned long)dst - info->start[sector]) >> shift;
879 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
881 flash_write_cmd(info, sector, offset, cnt - 1);
883 switch (info->portwidth) {
886 flash_write8(flash_read8(src), dst);
890 case FLASH_CFI_16BIT:
892 flash_write16(flash_read16(src), dst);
896 case FLASH_CFI_32BIT:
898 flash_write32(flash_read32(src), dst);
902 case FLASH_CFI_64BIT:
904 flash_write64(flash_read64(src), dst);
913 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
914 retcode = flash_full_status_check (info, sector,
915 info->buffer_write_tout,
920 debug ("Unknown Command Set\n");
928 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
931 /*-----------------------------------------------------------------------
933 int flash_erase (flash_info_t * info, int s_first, int s_last)
939 if (info->flash_id != FLASH_MAN_CFI) {
940 puts ("Can't erase unknown flash type - aborted\n");
943 if ((s_first < 0) || (s_first > s_last)) {
944 puts ("- no sectors to erase\n");
949 for (sect = s_first; sect <= s_last; ++sect) {
950 if (info->protect[sect]) {
955 printf ("- Warning: %d protected sectors will not be erased!\n",
957 } else if (flash_verbose) {
962 for (sect = s_first; sect <= s_last; sect++) {
963 if (info->protect[sect] == 0) { /* not protected */
964 switch (info->vendor) {
965 case CFI_CMDSET_INTEL_PROG_REGIONS:
966 case CFI_CMDSET_INTEL_STANDARD:
967 case CFI_CMDSET_INTEL_EXTENDED:
968 flash_write_cmd (info, sect, 0,
969 FLASH_CMD_CLEAR_STATUS);
970 flash_write_cmd (info, sect, 0,
971 FLASH_CMD_BLOCK_ERASE);
972 flash_write_cmd (info, sect, 0,
973 FLASH_CMD_ERASE_CONFIRM);
975 case CFI_CMDSET_AMD_STANDARD:
976 case CFI_CMDSET_AMD_EXTENDED:
977 flash_unlock_seq (info, sect);
978 flash_write_cmd (info, sect,
980 AMD_CMD_ERASE_START);
981 flash_unlock_seq (info, sect);
982 flash_write_cmd (info, sect, 0,
983 AMD_CMD_ERASE_SECTOR);
985 #ifdef CONFIG_FLASH_CFI_LEGACY
986 case CFI_CMDSET_AMD_LEGACY:
987 flash_unlock_seq (info, 0);
988 flash_write_cmd (info, 0, info->addr_unlock1,
989 AMD_CMD_ERASE_START);
990 flash_unlock_seq (info, 0);
991 flash_write_cmd (info, sect, 0,
992 AMD_CMD_ERASE_SECTOR);
996 debug ("Unkown flash vendor %d\n",
1001 if (flash_full_status_check
1002 (info, sect, info->erase_blk_tout, "erase")) {
1004 } else if (flash_verbose)
1015 /*-----------------------------------------------------------------------
1017 void flash_print_info (flash_info_t * info)
1021 if (info->flash_id != FLASH_MAN_CFI) {
1022 puts ("missing or unknown FLASH type\n");
1026 printf ("%s FLASH (%d x %d)",
1028 (info->portwidth << 3), (info->chipwidth << 3));
1029 if (info->size < 1024*1024)
1030 printf (" Size: %ld kB in %d Sectors\n",
1031 info->size >> 10, info->sector_count);
1033 printf (" Size: %ld MB in %d Sectors\n",
1034 info->size >> 20, info->sector_count);
1036 switch (info->vendor) {
1037 case CFI_CMDSET_INTEL_PROG_REGIONS:
1038 printf ("Intel Prog Regions");
1040 case CFI_CMDSET_INTEL_STANDARD:
1041 printf ("Intel Standard");
1043 case CFI_CMDSET_INTEL_EXTENDED:
1044 printf ("Intel Extended");
1046 case CFI_CMDSET_AMD_STANDARD:
1047 printf ("AMD Standard");
1049 case CFI_CMDSET_AMD_EXTENDED:
1050 printf ("AMD Extended");
1052 #ifdef CONFIG_FLASH_CFI_LEGACY
1053 case CFI_CMDSET_AMD_LEGACY:
1054 printf ("AMD Legacy");
1058 printf ("Unknown (%d)", info->vendor);
1061 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1062 info->manufacturer_id, info->device_id);
1063 if (info->device_id == 0x7E) {
1064 printf("%04X", info->device_id2);
1066 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1067 info->erase_blk_tout,
1069 if (info->buffer_size > 1) {
1070 printf (" Buffer write timeout: %ld ms, "
1071 "buffer size: %d bytes\n",
1072 info->buffer_write_tout,
1076 puts ("\n Sector Start Addresses:");
1077 for (i = 0; i < info->sector_count; ++i) {
1080 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1084 volatile unsigned long *flash;
1087 * Check if whole sector is erased
1089 size = flash_sector_size(info, i);
1091 flash = (volatile unsigned long *) info->start[i];
1092 size = size >> 2; /* divide by 4 for longword access */
1093 for (k = 0; k < size; k++) {
1094 if (*flash++ != 0xffffffff) {
1100 /* print empty and read-only info */
1101 printf (" %08lX %c %s ",
1104 info->protect[i] ? "RO" : " ");
1105 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1106 printf (" %08lX %s ",
1108 info->protect[i] ? "RO" : " ");
1115 /*-----------------------------------------------------------------------
1116 * This is used in a few places in write_buf() to show programming
1117 * progress. Making it a function is nasty because it needs to do side
1118 * effect updates to digit and dots. Repeated code is nasty too, so
1119 * we define it once here.
1121 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1122 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1123 if (flash_verbose) { \
1125 if ((scale > 0) && (dots <= 0)) { \
1126 if ((digit % 5) == 0) \
1127 printf ("%d", digit / 5); \
1135 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1138 /*-----------------------------------------------------------------------
1139 * Copy memory to flash, returns:
1142 * 2 - Flash not erased
1144 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1151 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1154 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1155 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1160 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1162 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1163 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1164 CONFIG_FLASH_SHOW_PROGRESS);
1168 /* get lower aligned address */
1169 wp = (addr & ~(info->portwidth - 1));
1171 /* handle unaligned start */
1172 if ((aln = addr - wp) != 0) {
1175 for (i = 0; i < aln; ++i)
1176 flash_add_byte (info, &cword, flash_read8(p + i));
1178 for (; (i < info->portwidth) && (cnt > 0); i++) {
1179 flash_add_byte (info, &cword, *src++);
1182 for (; (cnt == 0) && (i < info->portwidth); ++i)
1183 flash_add_byte (info, &cword, flash_read8(p + i));
1185 rc = flash_write_cfiword (info, wp, cword);
1190 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1193 /* handle the aligned part */
1194 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1195 buffered_size = (info->portwidth / info->chipwidth);
1196 buffered_size *= info->buffer_size;
1197 while (cnt >= info->portwidth) {
1198 /* prohibit buffer write when buffer_size is 1 */
1199 if (info->buffer_size == 1) {
1201 for (i = 0; i < info->portwidth; i++)
1202 flash_add_byte (info, &cword, *src++);
1203 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1205 wp += info->portwidth;
1206 cnt -= info->portwidth;
1210 /* write buffer until next buffered_size aligned boundary */
1211 i = buffered_size - (wp % buffered_size);
1214 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1216 i -= i & (info->portwidth - 1);
1220 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1223 while (cnt >= info->portwidth) {
1225 for (i = 0; i < info->portwidth; i++) {
1226 flash_add_byte (info, &cword, *src++);
1228 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1230 wp += info->portwidth;
1231 cnt -= info->portwidth;
1232 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1234 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1241 * handle unaligned tail bytes
1245 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1246 flash_add_byte (info, &cword, *src++);
1249 for (; i < info->portwidth; ++i)
1250 flash_add_byte (info, &cword, flash_read8(p + i));
1252 return flash_write_cfiword (info, wp, cword);
1255 /*-----------------------------------------------------------------------
1257 #ifdef CONFIG_SYS_FLASH_PROTECTION
1259 int flash_real_protect (flash_info_t * info, long sector, int prot)
1263 switch (info->vendor) {
1264 case CFI_CMDSET_INTEL_PROG_REGIONS:
1265 case CFI_CMDSET_INTEL_STANDARD:
1266 case CFI_CMDSET_INTEL_EXTENDED:
1267 flash_write_cmd (info, sector, 0,
1268 FLASH_CMD_CLEAR_STATUS);
1269 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1271 flash_write_cmd (info, sector, 0,
1272 FLASH_CMD_PROTECT_SET);
1274 flash_write_cmd (info, sector, 0,
1275 FLASH_CMD_PROTECT_CLEAR);
1277 case CFI_CMDSET_AMD_EXTENDED:
1278 case CFI_CMDSET_AMD_STANDARD:
1279 /* U-Boot only checks the first byte */
1280 if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1282 flash_unlock_seq (info, 0);
1283 flash_write_cmd (info, 0,
1285 ATM_CMD_SOFTLOCK_START);
1286 flash_unlock_seq (info, 0);
1287 flash_write_cmd (info, sector, 0,
1290 flash_write_cmd (info, 0,
1292 AMD_CMD_UNLOCK_START);
1293 if (info->device_id == ATM_ID_BV6416)
1294 flash_write_cmd (info, sector,
1295 0, ATM_CMD_UNLOCK_SECT);
1299 #ifdef CONFIG_FLASH_CFI_LEGACY
1300 case CFI_CMDSET_AMD_LEGACY:
1301 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1302 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1304 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1306 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1311 flash_full_status_check (info, sector, info->erase_blk_tout,
1312 prot ? "protect" : "unprotect")) == 0) {
1314 info->protect[sector] = prot;
1317 * On some of Intel's flash chips (marked via legacy_unlock)
1318 * unprotect unprotects all locking.
1320 if ((prot == 0) && (info->legacy_unlock)) {
1323 for (i = 0; i < info->sector_count; i++) {
1324 if (info->protect[i])
1325 flash_real_protect (info, i, 1);
1332 /*-----------------------------------------------------------------------
1333 * flash_read_user_serial - read the OneTimeProgramming cells
1335 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1342 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1343 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1344 memcpy (dst, src + offset, len);
1345 flash_write_cmd (info, 0, 0, info->cmd_reset);
1346 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1350 * flash_read_factory_serial - read the device Id from the protection area
1352 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1357 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1358 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1359 memcpy (buffer, src + offset, len);
1360 flash_write_cmd (info, 0, 0, info->cmd_reset);
1361 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1364 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1366 /*-----------------------------------------------------------------------
1367 * Reverse the order of the erase regions in the CFI QRY structure.
1368 * This is needed for chips that are either a) correctly detected as
1369 * top-boot, or b) buggy.
1371 static void cfi_reverse_geometry(struct cfi_qry *qry)
1376 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1377 tmp = qry->erase_region_info[i];
1378 qry->erase_region_info[i] = qry->erase_region_info[j];
1379 qry->erase_region_info[j] = tmp;
1383 /*-----------------------------------------------------------------------
1384 * read jedec ids from device and set corresponding fields in info struct
1386 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1389 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1391 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1392 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1393 udelay(1000); /* some flash are slow to respond */
1394 info->manufacturer_id = flash_read_uchar (info,
1395 FLASH_OFFSET_MANUFACTURER_ID);
1396 info->device_id = flash_read_uchar (info,
1397 FLASH_OFFSET_DEVICE_ID);
1398 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1401 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1403 info->cmd_reset = FLASH_CMD_RESET;
1405 cmdset_intel_read_jedec_ids(info);
1406 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1408 #ifdef CONFIG_SYS_FLASH_PROTECTION
1409 /* read legacy lock/unlock bit from intel flash */
1410 if (info->ext_addr) {
1411 info->legacy_unlock = flash_read_uchar (info,
1412 info->ext_addr + 5) & 0x08;
1419 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1424 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1425 flash_unlock_seq(info, 0);
1426 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1427 udelay(1000); /* some flash are slow to respond */
1429 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1430 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1431 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1433 manuId = flash_read_uchar (info,
1434 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1436 info->manufacturer_id = manuId;
1438 switch (info->chipwidth){
1439 case FLASH_CFI_8BIT:
1440 info->device_id = flash_read_uchar (info,
1441 FLASH_OFFSET_DEVICE_ID);
1442 if (info->device_id == 0x7E) {
1443 /* AMD 3-byte (expanded) device ids */
1444 info->device_id2 = flash_read_uchar (info,
1445 FLASH_OFFSET_DEVICE_ID2);
1446 info->device_id2 <<= 8;
1447 info->device_id2 |= flash_read_uchar (info,
1448 FLASH_OFFSET_DEVICE_ID3);
1451 case FLASH_CFI_16BIT:
1452 info->device_id = flash_read_word (info,
1453 FLASH_OFFSET_DEVICE_ID);
1458 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1461 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1463 info->cmd_reset = AMD_CMD_RESET;
1465 cmdset_amd_read_jedec_ids(info);
1466 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1471 #ifdef CONFIG_FLASH_CFI_LEGACY
1472 static void flash_read_jedec_ids (flash_info_t * info)
1474 info->manufacturer_id = 0;
1475 info->device_id = 0;
1476 info->device_id2 = 0;
1478 switch (info->vendor) {
1479 case CFI_CMDSET_INTEL_PROG_REGIONS:
1480 case CFI_CMDSET_INTEL_STANDARD:
1481 case CFI_CMDSET_INTEL_EXTENDED:
1482 cmdset_intel_read_jedec_ids(info);
1484 case CFI_CMDSET_AMD_STANDARD:
1485 case CFI_CMDSET_AMD_EXTENDED:
1486 cmdset_amd_read_jedec_ids(info);
1493 /*-----------------------------------------------------------------------
1494 * Call board code to request info about non-CFI flash.
1495 * board_flash_get_legacy needs to fill in at least:
1496 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1498 static int flash_detect_legacy(phys_addr_t base, int banknum)
1500 flash_info_t *info = &flash_info[banknum];
1502 if (board_flash_get_legacy(base, banknum, info)) {
1503 /* board code may have filled info completely. If not, we
1504 use JEDEC ID probing. */
1505 if (!info->vendor) {
1507 CFI_CMDSET_AMD_STANDARD,
1508 CFI_CMDSET_INTEL_STANDARD
1512 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1513 info->vendor = modes[i];
1515 (ulong)map_physmem(base,
1518 if (info->portwidth == FLASH_CFI_8BIT
1519 && info->interface == FLASH_CFI_X8X16) {
1520 info->addr_unlock1 = 0x2AAA;
1521 info->addr_unlock2 = 0x5555;
1523 info->addr_unlock1 = 0x5555;
1524 info->addr_unlock2 = 0x2AAA;
1526 flash_read_jedec_ids(info);
1527 debug("JEDEC PROBE: ID %x %x %x\n",
1528 info->manufacturer_id,
1531 if (jedec_flash_match(info, info->start[0]))
1534 unmap_physmem((void *)info->start[0],
1539 switch(info->vendor) {
1540 case CFI_CMDSET_INTEL_PROG_REGIONS:
1541 case CFI_CMDSET_INTEL_STANDARD:
1542 case CFI_CMDSET_INTEL_EXTENDED:
1543 info->cmd_reset = FLASH_CMD_RESET;
1545 case CFI_CMDSET_AMD_STANDARD:
1546 case CFI_CMDSET_AMD_EXTENDED:
1547 case CFI_CMDSET_AMD_LEGACY:
1548 info->cmd_reset = AMD_CMD_RESET;
1551 info->flash_id = FLASH_MAN_CFI;
1554 return 0; /* use CFI */
1557 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1559 return 0; /* use CFI */
1563 /*-----------------------------------------------------------------------
1564 * detect if flash is compatible with the Common Flash Interface (CFI)
1565 * http://www.jedec.org/download/search/jesd68.pdf
1567 static void flash_read_cfi (flash_info_t *info, void *buf,
1568 unsigned int start, size_t len)
1573 for (i = 0; i < len; i++)
1574 p[i] = flash_read_uchar(info, start + i);
1577 void __flash_cmd_reset(flash_info_t *info)
1580 * We do not yet know what kind of commandset to use, so we issue
1581 * the reset command in both Intel and AMD variants, in the hope
1582 * that AMD flash roms ignore the Intel command.
1584 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1585 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1587 void flash_cmd_reset(flash_info_t *info)
1588 __attribute__((weak,alias("__flash_cmd_reset")));
1590 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1594 /* Issue FLASH reset command */
1595 flash_cmd_reset(info);
1598 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1600 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1602 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1603 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1604 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1605 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1606 sizeof(struct cfi_qry));
1607 info->interface = le16_to_cpu(qry->interface_desc);
1609 info->cfi_offset = flash_offset_cfi[cfi_offset];
1610 debug ("device interface is %d\n",
1612 debug ("found port %d chip %d ",
1613 info->portwidth, info->chipwidth);
1614 debug ("port %d bits chip %d bits\n",
1615 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1616 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1618 /* calculate command offsets as in the Linux driver */
1619 info->addr_unlock1 = 0x555;
1620 info->addr_unlock2 = 0x2aa;
1623 * modify the unlock address if we are
1624 * in compatibility mode
1626 if ( /* x8/x16 in x8 mode */
1627 ((info->chipwidth == FLASH_CFI_BY8) &&
1628 (info->interface == FLASH_CFI_X8X16)) ||
1629 /* x16/x32 in x16 mode */
1630 ((info->chipwidth == FLASH_CFI_BY16) &&
1631 (info->interface == FLASH_CFI_X16X32)))
1633 info->addr_unlock1 = 0xaaa;
1634 info->addr_unlock2 = 0x555;
1637 info->name = "CFI conformant";
1645 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1647 debug ("flash detect cfi\n");
1649 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1650 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1651 for (info->chipwidth = FLASH_CFI_BY8;
1652 info->chipwidth <= info->portwidth;
1653 info->chipwidth <<= 1)
1654 if (__flash_detect_cfi(info, qry))
1657 debug ("not found\n");
1662 * Manufacturer-specific quirks. Add workarounds for geometry
1663 * reversal, etc. here.
1665 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1667 /* check if flash geometry needs reversal */
1668 if (qry->num_erase_regions > 1) {
1669 /* reverse geometry if top boot part */
1670 if (info->cfi_version < 0x3131) {
1671 /* CFI < 1.1, try to guess from device id */
1672 if ((info->device_id & 0x80) != 0)
1673 cfi_reverse_geometry(qry);
1674 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1675 /* CFI >= 1.1, deduct from top/bottom flag */
1676 /* note: ext_addr is valid since cfi_version > 0 */
1677 cfi_reverse_geometry(qry);
1682 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1684 int reverse_geometry = 0;
1686 /* Check the "top boot" bit in the PRI */
1687 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1688 reverse_geometry = 1;
1690 /* AT49BV6416(T) list the erase regions in the wrong order.
1691 * However, the device ID is identical with the non-broken
1692 * AT49BV642D they differ in the high byte.
1694 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1695 reverse_geometry = !reverse_geometry;
1697 if (reverse_geometry)
1698 cfi_reverse_geometry(qry);
1701 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1703 /* check if flash geometry needs reversal */
1704 if (qry->num_erase_regions > 1) {
1705 /* reverse geometry if top boot part */
1706 if (info->cfi_version < 0x3131) {
1707 /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1708 if (info->device_id == 0x22CA ||
1709 info->device_id == 0x2256) {
1710 cfi_reverse_geometry(qry);
1717 * The following code cannot be run from FLASH!
1720 ulong flash_get_size (phys_addr_t base, int banknum)
1722 flash_info_t *info = &flash_info[banknum];
1724 flash_sect_t sect_cnt;
1728 uchar num_erase_regions;
1729 int erase_region_size;
1730 int erase_region_count;
1733 memset(&qry, 0, sizeof(qry));
1736 info->cfi_version = 0;
1737 #ifdef CONFIG_SYS_FLASH_PROTECTION
1738 info->legacy_unlock = 0;
1741 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1743 if (flash_detect_cfi (info, &qry)) {
1744 info->vendor = le16_to_cpu(qry.p_id);
1745 info->ext_addr = le16_to_cpu(qry.p_adr);
1746 num_erase_regions = qry.num_erase_regions;
1748 if (info->ext_addr) {
1749 info->cfi_version = (ushort) flash_read_uchar (info,
1750 info->ext_addr + 3) << 8;
1751 info->cfi_version |= (ushort) flash_read_uchar (info,
1752 info->ext_addr + 4);
1756 flash_printqry (&qry);
1759 switch (info->vendor) {
1760 case CFI_CMDSET_INTEL_PROG_REGIONS:
1761 case CFI_CMDSET_INTEL_STANDARD:
1762 case CFI_CMDSET_INTEL_EXTENDED:
1763 cmdset_intel_init(info, &qry);
1765 case CFI_CMDSET_AMD_STANDARD:
1766 case CFI_CMDSET_AMD_EXTENDED:
1767 cmdset_amd_init(info, &qry);
1770 printf("CFI: Unknown command set 0x%x\n",
1773 * Unfortunately, this means we don't know how
1774 * to get the chip back to Read mode. Might
1775 * as well try an Intel-style reset...
1777 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1781 /* Do manufacturer-specific fixups */
1782 switch (info->manufacturer_id) {
1784 flash_fixup_amd(info, &qry);
1787 flash_fixup_atmel(info, &qry);
1790 flash_fixup_stm(info, &qry);
1794 debug ("manufacturer is %d\n", info->vendor);
1795 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1796 debug ("device id is 0x%x\n", info->device_id);
1797 debug ("device id2 is 0x%x\n", info->device_id2);
1798 debug ("cfi version is 0x%04x\n", info->cfi_version);
1800 size_ratio = info->portwidth / info->chipwidth;
1801 /* if the chip is x8/x16 reduce the ratio by half */
1802 if ((info->interface == FLASH_CFI_X8X16)
1803 && (info->chipwidth == FLASH_CFI_BY8)) {
1806 debug ("size_ratio %d port %d bits chip %d bits\n",
1807 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1808 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1809 debug ("found %d erase regions\n", num_erase_regions);
1812 for (i = 0; i < num_erase_regions; i++) {
1813 if (i > NUM_ERASE_REGIONS) {
1814 printf ("%d erase regions found, only %d used\n",
1815 num_erase_regions, NUM_ERASE_REGIONS);
1819 tmp = le32_to_cpu(qry.erase_region_info[i]);
1820 debug("erase region %u: 0x%08lx\n", i, tmp);
1822 erase_region_count = (tmp & 0xffff) + 1;
1825 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1826 debug ("erase_region_count = %d erase_region_size = %d\n",
1827 erase_region_count, erase_region_size);
1828 for (j = 0; j < erase_region_count; j++) {
1829 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1830 printf("ERROR: too many flash sectors\n");
1833 info->start[sect_cnt] =
1834 (ulong)map_physmem(sector,
1837 sector += (erase_region_size * size_ratio);
1840 * Only read protection status from
1841 * supported devices (intel...)
1843 switch (info->vendor) {
1844 case CFI_CMDSET_INTEL_PROG_REGIONS:
1845 case CFI_CMDSET_INTEL_EXTENDED:
1846 case CFI_CMDSET_INTEL_STANDARD:
1847 info->protect[sect_cnt] =
1848 flash_isset (info, sect_cnt,
1849 FLASH_OFFSET_PROTECT,
1850 FLASH_STATUS_PROTECT);
1853 /* default: not protected */
1854 info->protect[sect_cnt] = 0;
1861 info->sector_count = sect_cnt;
1862 info->size = 1 << qry.dev_size;
1863 /* multiply the size by the number of chips */
1864 info->size *= size_ratio;
1865 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1866 tmp = 1 << qry.block_erase_timeout_typ;
1867 info->erase_blk_tout = tmp *
1868 (1 << qry.block_erase_timeout_max);
1869 tmp = (1 << qry.buf_write_timeout_typ) *
1870 (1 << qry.buf_write_timeout_max);
1872 /* round up when converting to ms */
1873 info->buffer_write_tout = (tmp + 999) / 1000;
1874 tmp = (1 << qry.word_write_timeout_typ) *
1875 (1 << qry.word_write_timeout_max);
1876 /* round up when converting to ms */
1877 info->write_tout = (tmp + 999) / 1000;
1878 info->flash_id = FLASH_MAN_CFI;
1879 if ((info->interface == FLASH_CFI_X8X16) &&
1880 (info->chipwidth == FLASH_CFI_BY8)) {
1881 /* XXX - Need to test on x8/x16 in parallel. */
1882 info->portwidth >>= 1;
1885 flash_write_cmd (info, 0, 0, info->cmd_reset);
1888 return (info->size);
1891 void flash_set_verbose(uint v)
1896 /*-----------------------------------------------------------------------
1898 unsigned long flash_init (void)
1900 unsigned long size = 0;
1902 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
1906 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
1909 #ifdef CONFIG_SYS_FLASH_PROTECTION
1910 /* read environment from EEPROM */
1912 getenv_r ("unlock", s, sizeof(s));
1915 #define BANK_BASE(i) (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])
1917 /* Init: no FLASHes known */
1918 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1919 flash_info[i].flash_id = FLASH_UNKNOWN;
1921 if (!flash_detect_legacy (BANK_BASE(i), i))
1922 flash_get_size (BANK_BASE(i), i);
1923 size += flash_info[i].size;
1924 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1925 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
1926 printf ("## Unknown FLASH on Bank %d "
1927 "- Size = 0x%08lx = %ld MB\n",
1928 i+1, flash_info[i].size,
1929 flash_info[i].size << 20);
1930 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
1932 #ifdef CONFIG_SYS_FLASH_PROTECTION
1933 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
1935 * Only the U-Boot image and it's environment
1936 * is protected, all other sectors are
1937 * unprotected (unlocked) if flash hardware
1938 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
1939 * and the environment variable "unlock" is
1942 if (flash_info[i].legacy_unlock) {
1946 * Disable legacy_unlock temporarily,
1947 * since flash_real_protect would
1948 * relock all other sectors again
1951 flash_info[i].legacy_unlock = 0;
1954 * Legacy unlocking (e.g. Intel J3) ->
1955 * unlock only one sector. This will
1956 * unlock all sectors.
1958 flash_real_protect (&flash_info[i], 0, 0);
1960 flash_info[i].legacy_unlock = 1;
1963 * Manually mark other sectors as
1964 * unlocked (unprotected)
1966 for (k = 1; k < flash_info[i].sector_count; k++)
1967 flash_info[i].protect[k] = 0;
1970 * No legancy unlocking -> unlock all sectors
1972 flash_protect (FLAG_PROTECT_CLEAR,
1973 flash_info[i].start[0],
1974 flash_info[i].start[0]
1975 + flash_info[i].size - 1,
1979 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1982 /* Monitor protection ON by default */
1983 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
1984 (!defined(CONFIG_MONITOR_IS_IN_RAM))
1985 flash_protect (FLAG_PROTECT_SET,
1986 CONFIG_SYS_MONITOR_BASE,
1987 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
1988 flash_get_info(CONFIG_SYS_MONITOR_BASE));
1991 /* Environment protection ON by default */
1992 #ifdef CONFIG_ENV_IS_IN_FLASH
1993 flash_protect (FLAG_PROTECT_SET,
1995 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1996 flash_get_info(CONFIG_ENV_ADDR));
1999 /* Redundant environment protection ON by default */
2000 #ifdef CONFIG_ENV_ADDR_REDUND
2001 flash_protect (FLAG_PROTECT_SET,
2002 CONFIG_ENV_ADDR_REDUND,
2003 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2004 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2007 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2008 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2009 debug("autoprotecting from %08x to %08x\n",
2010 apl[i].start, apl[i].start + apl[i].size - 1);
2011 flash_protect (FLAG_PROTECT_SET,
2013 apl[i].start + apl[i].size - 1,
2014 flash_get_info(apl[i].start));
2018 #ifdef CONFIG_FLASH_CFI_MTD