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 if ((ulong)CONFIG_SYS_HZ > 100000)
541 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
543 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
546 /* Wait for command completion */
548 start = get_timer (0);
549 while (flash_is_busy (info, sector)) {
550 if (get_timer (start) > tout) {
551 printf ("Flash %s timeout at address %lx data %lx\n",
552 prompt, info->start[sector],
553 flash_read_long (info, sector, 0));
554 flash_write_cmd (info, sector, 0, info->cmd_reset);
557 udelay (1); /* also triggers watchdog */
562 /*-----------------------------------------------------------------------
563 * Wait for XSR.7 to be set, if it times out print an error, otherwise
564 * do a full status check.
566 * This routine sets the flash to read-array mode.
568 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
569 ulong tout, char *prompt)
573 retcode = flash_status_check (info, sector, tout, prompt);
574 switch (info->vendor) {
575 case CFI_CMDSET_INTEL_PROG_REGIONS:
576 case CFI_CMDSET_INTEL_EXTENDED:
577 case CFI_CMDSET_INTEL_STANDARD:
578 if ((retcode != ERR_OK)
579 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
581 printf ("Flash %s error at address %lx\n", prompt,
582 info->start[sector]);
583 if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
584 FLASH_STATUS_PSLBS)) {
585 puts ("Command Sequence Error.\n");
586 } else if (flash_isset (info, sector, 0,
587 FLASH_STATUS_ECLBS)) {
588 puts ("Block Erase Error.\n");
589 retcode = ERR_NOT_ERASED;
590 } else if (flash_isset (info, sector, 0,
591 FLASH_STATUS_PSLBS)) {
592 puts ("Locking Error\n");
594 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
595 puts ("Block locked.\n");
596 retcode = ERR_PROTECTED;
598 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
599 puts ("Vpp Low Error.\n");
601 flash_write_cmd (info, sector, 0, info->cmd_reset);
609 static int use_flash_status_poll(flash_info_t *info)
611 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
612 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
613 info->vendor == CFI_CMDSET_AMD_STANDARD)
619 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
620 ulong tout, char *prompt)
622 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
626 #if CONFIG_SYS_HZ != 1000
627 if ((ulong)CONFIG_SYS_HZ > 100000)
628 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
630 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
633 /* Wait for command completion */
635 start = get_timer(0);
637 switch (info->portwidth) {
639 ready = flash_read8(dst) == flash_read8(src);
641 case FLASH_CFI_16BIT:
642 ready = flash_read16(dst) == flash_read16(src);
644 case FLASH_CFI_32BIT:
645 ready = flash_read32(dst) == flash_read32(src);
647 case FLASH_CFI_64BIT:
648 ready = flash_read64(dst) == flash_read64(src);
656 if (get_timer(start) > tout) {
657 printf("Flash %s timeout at address %lx data %lx\n",
658 prompt, (ulong)dst, (ulong)flash_read8(dst));
661 udelay(1); /* also triggers watchdog */
663 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
667 /*-----------------------------------------------------------------------
669 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
671 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
674 unsigned long long ll;
677 switch (info->portwidth) {
681 case FLASH_CFI_16BIT:
682 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
685 cword->w = (cword->w >> 8) | w;
687 cword->w = (cword->w << 8) | c;
690 case FLASH_CFI_32BIT:
691 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
694 cword->l = (cword->l >> 8) | l;
696 cword->l = (cword->l << 8) | c;
699 case FLASH_CFI_64BIT:
700 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
703 cword->ll = (cword->ll >> 8) | ll;
705 cword->ll = (cword->ll << 8) | c;
712 * Loop through the sector table starting from the previously found sector.
713 * Searches forwards or backwards, dependent on the passed address.
715 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
717 static flash_sect_t saved_sector = 0; /* previously found sector */
718 flash_sect_t sector = saved_sector;
720 while ((info->start[sector] < addr)
721 && (sector < info->sector_count - 1))
723 while ((info->start[sector] > addr) && (sector > 0))
725 * also decrements the sector in case of an overshot
730 saved_sector = sector;
734 /*-----------------------------------------------------------------------
736 static int flash_write_cfiword (flash_info_t * info, ulong dest,
739 void *dstaddr = (void *)dest;
741 flash_sect_t sect = 0;
744 /* Check if Flash is (sufficiently) erased */
745 switch (info->portwidth) {
747 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
749 case FLASH_CFI_16BIT:
750 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
752 case FLASH_CFI_32BIT:
753 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
755 case FLASH_CFI_64BIT:
756 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
763 return ERR_NOT_ERASED;
765 /* Disable interrupts which might cause a timeout here */
766 flag = disable_interrupts ();
768 switch (info->vendor) {
769 case CFI_CMDSET_INTEL_PROG_REGIONS:
770 case CFI_CMDSET_INTEL_EXTENDED:
771 case CFI_CMDSET_INTEL_STANDARD:
772 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
773 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
775 case CFI_CMDSET_AMD_EXTENDED:
776 case CFI_CMDSET_AMD_STANDARD:
777 sect = find_sector(info, dest);
778 flash_unlock_seq (info, sect);
779 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
782 #ifdef CONFIG_FLASH_CFI_LEGACY
783 case CFI_CMDSET_AMD_LEGACY:
784 sect = find_sector(info, dest);
785 flash_unlock_seq (info, 0);
786 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
792 switch (info->portwidth) {
794 flash_write8(cword.c, dstaddr);
796 case FLASH_CFI_16BIT:
797 flash_write16(cword.w, dstaddr);
799 case FLASH_CFI_32BIT:
800 flash_write32(cword.l, dstaddr);
802 case FLASH_CFI_64BIT:
803 flash_write64(cword.ll, dstaddr);
807 /* re-enable interrupts if necessary */
809 enable_interrupts ();
812 sect = find_sector (info, dest);
814 if (use_flash_status_poll(info))
815 return flash_status_poll(info, &cword, dstaddr,
816 info->write_tout, "write");
818 return flash_full_status_check(info, sect,
819 info->write_tout, "write");
822 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
824 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
831 void *dst = (void *)dest;
838 switch (info->portwidth) {
842 case FLASH_CFI_16BIT:
845 case FLASH_CFI_32BIT:
848 case FLASH_CFI_64BIT:
858 while ((cnt-- > 0) && (flag == 0)) {
859 switch (info->portwidth) {
861 flag = ((flash_read8(dst2) & flash_read8(src)) ==
865 case FLASH_CFI_16BIT:
866 flag = ((flash_read16(dst2) & flash_read16(src)) ==
870 case FLASH_CFI_32BIT:
871 flag = ((flash_read32(dst2) & flash_read32(src)) ==
875 case FLASH_CFI_64BIT:
876 flag = ((flash_read64(dst2) & flash_read64(src)) ==
883 retcode = ERR_NOT_ERASED;
888 sector = find_sector (info, dest);
890 switch (info->vendor) {
891 case CFI_CMDSET_INTEL_PROG_REGIONS:
892 case CFI_CMDSET_INTEL_STANDARD:
893 case CFI_CMDSET_INTEL_EXTENDED:
894 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
895 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
896 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
897 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
898 flash_write_cmd (info, sector, 0, write_cmd);
899 retcode = flash_status_check (info, sector,
900 info->buffer_write_tout,
902 if (retcode == ERR_OK) {
903 /* reduce the number of loops by the width of
906 flash_write_cmd (info, sector, 0, cnt - 1);
908 switch (info->portwidth) {
910 flash_write8(flash_read8(src), dst);
913 case FLASH_CFI_16BIT:
914 flash_write16(flash_read16(src), dst);
917 case FLASH_CFI_32BIT:
918 flash_write32(flash_read32(src), dst);
921 case FLASH_CFI_64BIT:
922 flash_write64(flash_read64(src), dst);
930 flash_write_cmd (info, sector, 0,
931 FLASH_CMD_WRITE_BUFFER_CONFIRM);
932 retcode = flash_full_status_check (
933 info, sector, info->buffer_write_tout,
939 case CFI_CMDSET_AMD_STANDARD:
940 case CFI_CMDSET_AMD_EXTENDED:
941 flash_unlock_seq(info,0);
943 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
944 offset = ((unsigned long)dst - info->start[sector]) >> shift;
946 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
948 flash_write_cmd(info, sector, offset, cnt - 1);
950 switch (info->portwidth) {
953 flash_write8(flash_read8(src), dst);
957 case FLASH_CFI_16BIT:
959 flash_write16(flash_read16(src), dst);
963 case FLASH_CFI_32BIT:
965 flash_write32(flash_read32(src), dst);
969 case FLASH_CFI_64BIT:
971 flash_write64(flash_read64(src), dst);
980 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
981 if (use_flash_status_poll(info))
982 retcode = flash_status_poll(info, src - (1 << shift),
984 info->buffer_write_tout,
987 retcode = flash_full_status_check(info, sector,
988 info->buffer_write_tout,
993 debug ("Unknown Command Set\n");
1001 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1004 /*-----------------------------------------------------------------------
1006 int flash_erase (flash_info_t * info, int s_first, int s_last)
1013 if (info->flash_id != FLASH_MAN_CFI) {
1014 puts ("Can't erase unknown flash type - aborted\n");
1017 if ((s_first < 0) || (s_first > s_last)) {
1018 puts ("- no sectors to erase\n");
1023 for (sect = s_first; sect <= s_last; ++sect) {
1024 if (info->protect[sect]) {
1029 printf ("- Warning: %d protected sectors will not be erased!\n",
1031 } else if (flash_verbose) {
1036 for (sect = s_first; sect <= s_last; sect++) {
1037 if (info->protect[sect] == 0) { /* not protected */
1038 switch (info->vendor) {
1039 case CFI_CMDSET_INTEL_PROG_REGIONS:
1040 case CFI_CMDSET_INTEL_STANDARD:
1041 case CFI_CMDSET_INTEL_EXTENDED:
1042 flash_write_cmd (info, sect, 0,
1043 FLASH_CMD_CLEAR_STATUS);
1044 flash_write_cmd (info, sect, 0,
1045 FLASH_CMD_BLOCK_ERASE);
1046 flash_write_cmd (info, sect, 0,
1047 FLASH_CMD_ERASE_CONFIRM);
1049 case CFI_CMDSET_AMD_STANDARD:
1050 case CFI_CMDSET_AMD_EXTENDED:
1051 flash_unlock_seq (info, sect);
1052 flash_write_cmd (info, sect,
1054 AMD_CMD_ERASE_START);
1055 flash_unlock_seq (info, sect);
1056 flash_write_cmd (info, sect, 0,
1057 AMD_CMD_ERASE_SECTOR);
1059 #ifdef CONFIG_FLASH_CFI_LEGACY
1060 case CFI_CMDSET_AMD_LEGACY:
1061 flash_unlock_seq (info, 0);
1062 flash_write_cmd (info, 0, info->addr_unlock1,
1063 AMD_CMD_ERASE_START);
1064 flash_unlock_seq (info, 0);
1065 flash_write_cmd (info, sect, 0,
1066 AMD_CMD_ERASE_SECTOR);
1070 debug ("Unkown flash vendor %d\n",
1075 if (use_flash_status_poll(info)) {
1076 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL;
1078 dest = flash_map(info, sect, 0);
1079 st = flash_status_poll(info, &cword, dest,
1080 info->erase_blk_tout, "erase");
1081 flash_unmap(info, sect, 0, dest);
1083 st = flash_full_status_check(info, sect,
1084 info->erase_blk_tout,
1088 else if (flash_verbose)
1099 /*-----------------------------------------------------------------------
1101 void flash_print_info (flash_info_t * info)
1105 if (info->flash_id != FLASH_MAN_CFI) {
1106 puts ("missing or unknown FLASH type\n");
1110 printf ("%s FLASH (%d x %d)",
1112 (info->portwidth << 3), (info->chipwidth << 3));
1113 if (info->size < 1024*1024)
1114 printf (" Size: %ld kB in %d Sectors\n",
1115 info->size >> 10, info->sector_count);
1117 printf (" Size: %ld MB in %d Sectors\n",
1118 info->size >> 20, info->sector_count);
1120 switch (info->vendor) {
1121 case CFI_CMDSET_INTEL_PROG_REGIONS:
1122 printf ("Intel Prog Regions");
1124 case CFI_CMDSET_INTEL_STANDARD:
1125 printf ("Intel Standard");
1127 case CFI_CMDSET_INTEL_EXTENDED:
1128 printf ("Intel Extended");
1130 case CFI_CMDSET_AMD_STANDARD:
1131 printf ("AMD Standard");
1133 case CFI_CMDSET_AMD_EXTENDED:
1134 printf ("AMD Extended");
1136 #ifdef CONFIG_FLASH_CFI_LEGACY
1137 case CFI_CMDSET_AMD_LEGACY:
1138 printf ("AMD Legacy");
1142 printf ("Unknown (%d)", info->vendor);
1145 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1146 info->manufacturer_id, info->device_id);
1147 if (info->device_id == 0x7E) {
1148 printf("%04X", info->device_id2);
1150 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1151 info->erase_blk_tout,
1153 if (info->buffer_size > 1) {
1154 printf (" Buffer write timeout: %ld ms, "
1155 "buffer size: %d bytes\n",
1156 info->buffer_write_tout,
1160 puts ("\n Sector Start Addresses:");
1161 for (i = 0; i < info->sector_count; ++i) {
1164 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1168 volatile unsigned long *flash;
1171 * Check if whole sector is erased
1173 size = flash_sector_size(info, i);
1175 flash = (volatile unsigned long *) info->start[i];
1176 size = size >> 2; /* divide by 4 for longword access */
1177 for (k = 0; k < size; k++) {
1178 if (*flash++ != 0xffffffff) {
1184 /* print empty and read-only info */
1185 printf (" %08lX %c %s ",
1188 info->protect[i] ? "RO" : " ");
1189 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1190 printf (" %08lX %s ",
1192 info->protect[i] ? "RO" : " ");
1199 /*-----------------------------------------------------------------------
1200 * This is used in a few places in write_buf() to show programming
1201 * progress. Making it a function is nasty because it needs to do side
1202 * effect updates to digit and dots. Repeated code is nasty too, so
1203 * we define it once here.
1205 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1206 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1207 if (flash_verbose) { \
1209 if ((scale > 0) && (dots <= 0)) { \
1210 if ((digit % 5) == 0) \
1211 printf ("%d", digit / 5); \
1219 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1222 /*-----------------------------------------------------------------------
1223 * Copy memory to flash, returns:
1226 * 2 - Flash not erased
1228 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1235 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1238 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1239 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1244 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1246 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1247 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1248 CONFIG_FLASH_SHOW_PROGRESS);
1252 /* get lower aligned address */
1253 wp = (addr & ~(info->portwidth - 1));
1255 /* handle unaligned start */
1256 if ((aln = addr - wp) != 0) {
1259 for (i = 0; i < aln; ++i)
1260 flash_add_byte (info, &cword, flash_read8(p + i));
1262 for (; (i < info->portwidth) && (cnt > 0); i++) {
1263 flash_add_byte (info, &cword, *src++);
1266 for (; (cnt == 0) && (i < info->portwidth); ++i)
1267 flash_add_byte (info, &cword, flash_read8(p + i));
1269 rc = flash_write_cfiword (info, wp, cword);
1274 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1277 /* handle the aligned part */
1278 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1279 buffered_size = (info->portwidth / info->chipwidth);
1280 buffered_size *= info->buffer_size;
1281 while (cnt >= info->portwidth) {
1282 /* prohibit buffer write when buffer_size is 1 */
1283 if (info->buffer_size == 1) {
1285 for (i = 0; i < info->portwidth; i++)
1286 flash_add_byte (info, &cword, *src++);
1287 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1289 wp += info->portwidth;
1290 cnt -= info->portwidth;
1294 /* write buffer until next buffered_size aligned boundary */
1295 i = buffered_size - (wp % buffered_size);
1298 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1300 i -= i & (info->portwidth - 1);
1304 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1307 while (cnt >= info->portwidth) {
1309 for (i = 0; i < info->portwidth; i++) {
1310 flash_add_byte (info, &cword, *src++);
1312 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1314 wp += info->portwidth;
1315 cnt -= info->portwidth;
1316 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1318 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1325 * handle unaligned tail bytes
1329 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1330 flash_add_byte (info, &cword, *src++);
1333 for (; i < info->portwidth; ++i)
1334 flash_add_byte (info, &cword, flash_read8(p + i));
1336 return flash_write_cfiword (info, wp, cword);
1339 /*-----------------------------------------------------------------------
1341 #ifdef CONFIG_SYS_FLASH_PROTECTION
1343 int flash_real_protect (flash_info_t * info, long sector, int prot)
1347 switch (info->vendor) {
1348 case CFI_CMDSET_INTEL_PROG_REGIONS:
1349 case CFI_CMDSET_INTEL_STANDARD:
1350 case CFI_CMDSET_INTEL_EXTENDED:
1351 flash_write_cmd (info, sector, 0,
1352 FLASH_CMD_CLEAR_STATUS);
1353 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1355 flash_write_cmd (info, sector, 0,
1356 FLASH_CMD_PROTECT_SET);
1358 flash_write_cmd (info, sector, 0,
1359 FLASH_CMD_PROTECT_CLEAR);
1361 case CFI_CMDSET_AMD_EXTENDED:
1362 case CFI_CMDSET_AMD_STANDARD:
1363 /* U-Boot only checks the first byte */
1364 if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1366 flash_unlock_seq (info, 0);
1367 flash_write_cmd (info, 0,
1369 ATM_CMD_SOFTLOCK_START);
1370 flash_unlock_seq (info, 0);
1371 flash_write_cmd (info, sector, 0,
1374 flash_write_cmd (info, 0,
1376 AMD_CMD_UNLOCK_START);
1377 if (info->device_id == ATM_ID_BV6416)
1378 flash_write_cmd (info, sector,
1379 0, ATM_CMD_UNLOCK_SECT);
1383 #ifdef CONFIG_FLASH_CFI_LEGACY
1384 case CFI_CMDSET_AMD_LEGACY:
1385 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1386 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1388 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1390 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1395 flash_full_status_check (info, sector, info->erase_blk_tout,
1396 prot ? "protect" : "unprotect")) == 0) {
1398 info->protect[sector] = prot;
1401 * On some of Intel's flash chips (marked via legacy_unlock)
1402 * unprotect unprotects all locking.
1404 if ((prot == 0) && (info->legacy_unlock)) {
1407 for (i = 0; i < info->sector_count; i++) {
1408 if (info->protect[i])
1409 flash_real_protect (info, i, 1);
1416 /*-----------------------------------------------------------------------
1417 * flash_read_user_serial - read the OneTimeProgramming cells
1419 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1426 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1427 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1428 memcpy (dst, src + offset, len);
1429 flash_write_cmd (info, 0, 0, info->cmd_reset);
1430 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1434 * flash_read_factory_serial - read the device Id from the protection area
1436 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1441 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1442 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1443 memcpy (buffer, src + offset, len);
1444 flash_write_cmd (info, 0, 0, info->cmd_reset);
1445 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1448 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1450 /*-----------------------------------------------------------------------
1451 * Reverse the order of the erase regions in the CFI QRY structure.
1452 * This is needed for chips that are either a) correctly detected as
1453 * top-boot, or b) buggy.
1455 static void cfi_reverse_geometry(struct cfi_qry *qry)
1460 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1461 tmp = qry->erase_region_info[i];
1462 qry->erase_region_info[i] = qry->erase_region_info[j];
1463 qry->erase_region_info[j] = tmp;
1467 /*-----------------------------------------------------------------------
1468 * read jedec ids from device and set corresponding fields in info struct
1470 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1473 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1475 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1476 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1477 udelay(1000); /* some flash are slow to respond */
1478 info->manufacturer_id = flash_read_uchar (info,
1479 FLASH_OFFSET_MANUFACTURER_ID);
1480 info->device_id = flash_read_uchar (info,
1481 FLASH_OFFSET_DEVICE_ID);
1482 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1485 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1487 info->cmd_reset = FLASH_CMD_RESET;
1489 cmdset_intel_read_jedec_ids(info);
1490 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1492 #ifdef CONFIG_SYS_FLASH_PROTECTION
1493 /* read legacy lock/unlock bit from intel flash */
1494 if (info->ext_addr) {
1495 info->legacy_unlock = flash_read_uchar (info,
1496 info->ext_addr + 5) & 0x08;
1503 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1508 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1509 flash_unlock_seq(info, 0);
1510 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1511 udelay(1000); /* some flash are slow to respond */
1513 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1514 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1515 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1517 manuId = flash_read_uchar (info,
1518 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1520 info->manufacturer_id = manuId;
1522 switch (info->chipwidth){
1523 case FLASH_CFI_8BIT:
1524 info->device_id = flash_read_uchar (info,
1525 FLASH_OFFSET_DEVICE_ID);
1526 if (info->device_id == 0x7E) {
1527 /* AMD 3-byte (expanded) device ids */
1528 info->device_id2 = flash_read_uchar (info,
1529 FLASH_OFFSET_DEVICE_ID2);
1530 info->device_id2 <<= 8;
1531 info->device_id2 |= flash_read_uchar (info,
1532 FLASH_OFFSET_DEVICE_ID3);
1535 case FLASH_CFI_16BIT:
1536 info->device_id = flash_read_word (info,
1537 FLASH_OFFSET_DEVICE_ID);
1542 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1545 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1547 info->cmd_reset = AMD_CMD_RESET;
1549 cmdset_amd_read_jedec_ids(info);
1550 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1555 #ifdef CONFIG_FLASH_CFI_LEGACY
1556 static void flash_read_jedec_ids (flash_info_t * info)
1558 info->manufacturer_id = 0;
1559 info->device_id = 0;
1560 info->device_id2 = 0;
1562 switch (info->vendor) {
1563 case CFI_CMDSET_INTEL_PROG_REGIONS:
1564 case CFI_CMDSET_INTEL_STANDARD:
1565 case CFI_CMDSET_INTEL_EXTENDED:
1566 cmdset_intel_read_jedec_ids(info);
1568 case CFI_CMDSET_AMD_STANDARD:
1569 case CFI_CMDSET_AMD_EXTENDED:
1570 cmdset_amd_read_jedec_ids(info);
1577 /*-----------------------------------------------------------------------
1578 * Call board code to request info about non-CFI flash.
1579 * board_flash_get_legacy needs to fill in at least:
1580 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1582 static int flash_detect_legacy(phys_addr_t base, int banknum)
1584 flash_info_t *info = &flash_info[banknum];
1586 if (board_flash_get_legacy(base, banknum, info)) {
1587 /* board code may have filled info completely. If not, we
1588 use JEDEC ID probing. */
1589 if (!info->vendor) {
1591 CFI_CMDSET_AMD_STANDARD,
1592 CFI_CMDSET_INTEL_STANDARD
1596 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1597 info->vendor = modes[i];
1599 (ulong)map_physmem(base,
1602 if (info->portwidth == FLASH_CFI_8BIT
1603 && info->interface == FLASH_CFI_X8X16) {
1604 info->addr_unlock1 = 0x2AAA;
1605 info->addr_unlock2 = 0x5555;
1607 info->addr_unlock1 = 0x5555;
1608 info->addr_unlock2 = 0x2AAA;
1610 flash_read_jedec_ids(info);
1611 debug("JEDEC PROBE: ID %x %x %x\n",
1612 info->manufacturer_id,
1615 if (jedec_flash_match(info, info->start[0]))
1618 unmap_physmem((void *)info->start[0],
1623 switch(info->vendor) {
1624 case CFI_CMDSET_INTEL_PROG_REGIONS:
1625 case CFI_CMDSET_INTEL_STANDARD:
1626 case CFI_CMDSET_INTEL_EXTENDED:
1627 info->cmd_reset = FLASH_CMD_RESET;
1629 case CFI_CMDSET_AMD_STANDARD:
1630 case CFI_CMDSET_AMD_EXTENDED:
1631 case CFI_CMDSET_AMD_LEGACY:
1632 info->cmd_reset = AMD_CMD_RESET;
1635 info->flash_id = FLASH_MAN_CFI;
1638 return 0; /* use CFI */
1641 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1643 return 0; /* use CFI */
1647 /*-----------------------------------------------------------------------
1648 * detect if flash is compatible with the Common Flash Interface (CFI)
1649 * http://www.jedec.org/download/search/jesd68.pdf
1651 static void flash_read_cfi (flash_info_t *info, void *buf,
1652 unsigned int start, size_t len)
1657 for (i = 0; i < len; i++)
1658 p[i] = flash_read_uchar(info, start + i);
1661 void __flash_cmd_reset(flash_info_t *info)
1664 * We do not yet know what kind of commandset to use, so we issue
1665 * the reset command in both Intel and AMD variants, in the hope
1666 * that AMD flash roms ignore the Intel command.
1668 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1669 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1671 void flash_cmd_reset(flash_info_t *info)
1672 __attribute__((weak,alias("__flash_cmd_reset")));
1674 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1678 /* Issue FLASH reset command */
1679 flash_cmd_reset(info);
1682 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1684 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1686 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1687 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1688 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1689 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1690 sizeof(struct cfi_qry));
1691 info->interface = le16_to_cpu(qry->interface_desc);
1693 info->cfi_offset = flash_offset_cfi[cfi_offset];
1694 debug ("device interface is %d\n",
1696 debug ("found port %d chip %d ",
1697 info->portwidth, info->chipwidth);
1698 debug ("port %d bits chip %d bits\n",
1699 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1700 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1702 /* calculate command offsets as in the Linux driver */
1703 info->addr_unlock1 = 0x555;
1704 info->addr_unlock2 = 0x2aa;
1707 * modify the unlock address if we are
1708 * in compatibility mode
1710 if ( /* x8/x16 in x8 mode */
1711 ((info->chipwidth == FLASH_CFI_BY8) &&
1712 (info->interface == FLASH_CFI_X8X16)) ||
1713 /* x16/x32 in x16 mode */
1714 ((info->chipwidth == FLASH_CFI_BY16) &&
1715 (info->interface == FLASH_CFI_X16X32)))
1717 info->addr_unlock1 = 0xaaa;
1718 info->addr_unlock2 = 0x555;
1721 info->name = "CFI conformant";
1729 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1731 debug ("flash detect cfi\n");
1733 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1734 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1735 for (info->chipwidth = FLASH_CFI_BY8;
1736 info->chipwidth <= info->portwidth;
1737 info->chipwidth <<= 1)
1738 if (__flash_detect_cfi(info, qry))
1741 debug ("not found\n");
1746 * Manufacturer-specific quirks. Add workarounds for geometry
1747 * reversal, etc. here.
1749 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1751 /* check if flash geometry needs reversal */
1752 if (qry->num_erase_regions > 1) {
1753 /* reverse geometry if top boot part */
1754 if (info->cfi_version < 0x3131) {
1755 /* CFI < 1.1, try to guess from device id */
1756 if ((info->device_id & 0x80) != 0)
1757 cfi_reverse_geometry(qry);
1758 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1759 /* CFI >= 1.1, deduct from top/bottom flag */
1760 /* note: ext_addr is valid since cfi_version > 0 */
1761 cfi_reverse_geometry(qry);
1766 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1768 int reverse_geometry = 0;
1770 /* Check the "top boot" bit in the PRI */
1771 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1772 reverse_geometry = 1;
1774 /* AT49BV6416(T) list the erase regions in the wrong order.
1775 * However, the device ID is identical with the non-broken
1776 * AT49BV642D they differ in the high byte.
1778 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1779 reverse_geometry = !reverse_geometry;
1781 if (reverse_geometry)
1782 cfi_reverse_geometry(qry);
1785 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1787 /* check if flash geometry needs reversal */
1788 if (qry->num_erase_regions > 1) {
1789 /* reverse geometry if top boot part */
1790 if (info->cfi_version < 0x3131) {
1791 /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1792 if (info->device_id == 0x22CA ||
1793 info->device_id == 0x2256) {
1794 cfi_reverse_geometry(qry);
1801 * The following code cannot be run from FLASH!
1804 ulong flash_get_size (phys_addr_t base, int banknum)
1806 flash_info_t *info = &flash_info[banknum];
1808 flash_sect_t sect_cnt;
1812 uchar num_erase_regions;
1813 int erase_region_size;
1814 int erase_region_count;
1817 memset(&qry, 0, sizeof(qry));
1820 info->cfi_version = 0;
1821 #ifdef CONFIG_SYS_FLASH_PROTECTION
1822 info->legacy_unlock = 0;
1825 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1827 if (flash_detect_cfi (info, &qry)) {
1828 info->vendor = le16_to_cpu(qry.p_id);
1829 info->ext_addr = le16_to_cpu(qry.p_adr);
1830 num_erase_regions = qry.num_erase_regions;
1832 if (info->ext_addr) {
1833 info->cfi_version = (ushort) flash_read_uchar (info,
1834 info->ext_addr + 3) << 8;
1835 info->cfi_version |= (ushort) flash_read_uchar (info,
1836 info->ext_addr + 4);
1840 flash_printqry (&qry);
1843 switch (info->vendor) {
1844 case CFI_CMDSET_INTEL_PROG_REGIONS:
1845 case CFI_CMDSET_INTEL_STANDARD:
1846 case CFI_CMDSET_INTEL_EXTENDED:
1847 cmdset_intel_init(info, &qry);
1849 case CFI_CMDSET_AMD_STANDARD:
1850 case CFI_CMDSET_AMD_EXTENDED:
1851 cmdset_amd_init(info, &qry);
1854 printf("CFI: Unknown command set 0x%x\n",
1857 * Unfortunately, this means we don't know how
1858 * to get the chip back to Read mode. Might
1859 * as well try an Intel-style reset...
1861 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1865 /* Do manufacturer-specific fixups */
1866 switch (info->manufacturer_id) {
1868 flash_fixup_amd(info, &qry);
1871 flash_fixup_atmel(info, &qry);
1874 flash_fixup_stm(info, &qry);
1878 debug ("manufacturer is %d\n", info->vendor);
1879 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1880 debug ("device id is 0x%x\n", info->device_id);
1881 debug ("device id2 is 0x%x\n", info->device_id2);
1882 debug ("cfi version is 0x%04x\n", info->cfi_version);
1884 size_ratio = info->portwidth / info->chipwidth;
1885 /* if the chip is x8/x16 reduce the ratio by half */
1886 if ((info->interface == FLASH_CFI_X8X16)
1887 && (info->chipwidth == FLASH_CFI_BY8)) {
1890 debug ("size_ratio %d port %d bits chip %d bits\n",
1891 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1892 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1893 debug ("found %d erase regions\n", num_erase_regions);
1896 for (i = 0; i < num_erase_regions; i++) {
1897 if (i > NUM_ERASE_REGIONS) {
1898 printf ("%d erase regions found, only %d used\n",
1899 num_erase_regions, NUM_ERASE_REGIONS);
1903 tmp = le32_to_cpu(qry.erase_region_info[i]);
1904 debug("erase region %u: 0x%08lx\n", i, tmp);
1906 erase_region_count = (tmp & 0xffff) + 1;
1909 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1910 debug ("erase_region_count = %d erase_region_size = %d\n",
1911 erase_region_count, erase_region_size);
1912 for (j = 0; j < erase_region_count; j++) {
1913 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1914 printf("ERROR: too many flash sectors\n");
1917 info->start[sect_cnt] =
1918 (ulong)map_physmem(sector,
1921 sector += (erase_region_size * size_ratio);
1924 * Only read protection status from
1925 * supported devices (intel...)
1927 switch (info->vendor) {
1928 case CFI_CMDSET_INTEL_PROG_REGIONS:
1929 case CFI_CMDSET_INTEL_EXTENDED:
1930 case CFI_CMDSET_INTEL_STANDARD:
1931 info->protect[sect_cnt] =
1932 flash_isset (info, sect_cnt,
1933 FLASH_OFFSET_PROTECT,
1934 FLASH_STATUS_PROTECT);
1937 /* default: not protected */
1938 info->protect[sect_cnt] = 0;
1945 info->sector_count = sect_cnt;
1946 info->size = 1 << qry.dev_size;
1947 /* multiply the size by the number of chips */
1948 info->size *= size_ratio;
1949 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1950 tmp = 1 << qry.block_erase_timeout_typ;
1951 info->erase_blk_tout = tmp *
1952 (1 << qry.block_erase_timeout_max);
1953 tmp = (1 << qry.buf_write_timeout_typ) *
1954 (1 << qry.buf_write_timeout_max);
1956 /* round up when converting to ms */
1957 info->buffer_write_tout = (tmp + 999) / 1000;
1958 tmp = (1 << qry.word_write_timeout_typ) *
1959 (1 << qry.word_write_timeout_max);
1960 /* round up when converting to ms */
1961 info->write_tout = (tmp + 999) / 1000;
1962 info->flash_id = FLASH_MAN_CFI;
1963 if ((info->interface == FLASH_CFI_X8X16) &&
1964 (info->chipwidth == FLASH_CFI_BY8)) {
1965 /* XXX - Need to test on x8/x16 in parallel. */
1966 info->portwidth >>= 1;
1969 flash_write_cmd (info, 0, 0, info->cmd_reset);
1972 return (info->size);
1975 void flash_set_verbose(uint v)
1980 /*-----------------------------------------------------------------------
1982 unsigned long flash_init (void)
1984 unsigned long size = 0;
1986 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
1990 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
1993 #ifdef CONFIG_SYS_FLASH_PROTECTION
1994 /* read environment from EEPROM */
1996 getenv_r ("unlock", s, sizeof(s));
1999 #define BANK_BASE(i) (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])
2001 /* Init: no FLASHes known */
2002 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2003 flash_info[i].flash_id = FLASH_UNKNOWN;
2005 if (!flash_detect_legacy (BANK_BASE(i), i))
2006 flash_get_size (BANK_BASE(i), i);
2007 size += flash_info[i].size;
2008 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2009 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2010 printf ("## Unknown FLASH on Bank %d "
2011 "- Size = 0x%08lx = %ld MB\n",
2012 i+1, flash_info[i].size,
2013 flash_info[i].size << 20);
2014 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2016 #ifdef CONFIG_SYS_FLASH_PROTECTION
2017 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2019 * Only the U-Boot image and it's environment
2020 * is protected, all other sectors are
2021 * unprotected (unlocked) if flash hardware
2022 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2023 * and the environment variable "unlock" is
2026 if (flash_info[i].legacy_unlock) {
2030 * Disable legacy_unlock temporarily,
2031 * since flash_real_protect would
2032 * relock all other sectors again
2035 flash_info[i].legacy_unlock = 0;
2038 * Legacy unlocking (e.g. Intel J3) ->
2039 * unlock only one sector. This will
2040 * unlock all sectors.
2042 flash_real_protect (&flash_info[i], 0, 0);
2044 flash_info[i].legacy_unlock = 1;
2047 * Manually mark other sectors as
2048 * unlocked (unprotected)
2050 for (k = 1; k < flash_info[i].sector_count; k++)
2051 flash_info[i].protect[k] = 0;
2054 * No legancy unlocking -> unlock all sectors
2056 flash_protect (FLAG_PROTECT_CLEAR,
2057 flash_info[i].start[0],
2058 flash_info[i].start[0]
2059 + flash_info[i].size - 1,
2063 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2066 /* Monitor protection ON by default */
2067 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2068 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2069 flash_protect (FLAG_PROTECT_SET,
2070 CONFIG_SYS_MONITOR_BASE,
2071 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2072 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2075 /* Environment protection ON by default */
2076 #ifdef CONFIG_ENV_IS_IN_FLASH
2077 flash_protect (FLAG_PROTECT_SET,
2079 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2080 flash_get_info(CONFIG_ENV_ADDR));
2083 /* Redundant environment protection ON by default */
2084 #ifdef CONFIG_ENV_ADDR_REDUND
2085 flash_protect (FLAG_PROTECT_SET,
2086 CONFIG_ENV_ADDR_REDUND,
2087 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2088 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2091 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2092 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2093 debug("autoprotecting from %08x to %08x\n",
2094 apl[i].start, apl[i].start + apl[i].size - 1);
2095 flash_protect (FLAG_PROTECT_SET,
2097 apl[i].start + apl[i].size - 1,
2098 flash_get_info(apl[i].start));
2102 #ifdef CONFIG_FLASH_CFI_MTD