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 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
66 #ifdef CONFIG_FLASH_CFI_MTD
67 static uint flash_verbose = 1;
69 #define flash_verbose 1
72 flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
75 * Check if chip width is defined. If not, start detecting with 8bit.
77 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
78 #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
82 * 0xffff is an undefined value for the configuration register. When
83 * this value is returned, the configuration register shall not be
84 * written at all (default mode).
86 static u16 cfi_flash_config_reg(int i)
88 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
89 return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
95 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
96 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
99 static phys_addr_t __cfi_flash_bank_addr(int i)
101 return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
103 phys_addr_t cfi_flash_bank_addr(int i)
104 __attribute__((weak, alias("__cfi_flash_bank_addr")));
106 static unsigned long __cfi_flash_bank_size(int i)
108 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
109 return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
114 unsigned long cfi_flash_bank_size(int i)
115 __attribute__((weak, alias("__cfi_flash_bank_size")));
117 static void __flash_write8(u8 value, void *addr)
119 __raw_writeb(value, addr);
122 static void __flash_write16(u16 value, void *addr)
124 __raw_writew(value, addr);
127 static void __flash_write32(u32 value, void *addr)
129 __raw_writel(value, addr);
132 static void __flash_write64(u64 value, void *addr)
134 /* No architectures currently implement __raw_writeq() */
135 *(volatile u64 *)addr = value;
138 static u8 __flash_read8(void *addr)
140 return __raw_readb(addr);
143 static u16 __flash_read16(void *addr)
145 return __raw_readw(addr);
148 static u32 __flash_read32(void *addr)
150 return __raw_readl(addr);
153 static u64 __flash_read64(void *addr)
155 /* No architectures currently implement __raw_readq() */
156 return *(volatile u64 *)addr;
159 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
160 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
161 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
162 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
163 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
164 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
165 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
166 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
167 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
169 #define flash_write8 __flash_write8
170 #define flash_write16 __flash_write16
171 #define flash_write32 __flash_write32
172 #define flash_write64 __flash_write64
173 #define flash_read8 __flash_read8
174 #define flash_read16 __flash_read16
175 #define flash_read32 __flash_read32
176 #define flash_read64 __flash_read64
179 /*-----------------------------------------------------------------------
181 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
182 flash_info_t *flash_get_info(ulong base)
185 flash_info_t *info = NULL;
187 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
188 info = & flash_info[i];
189 if (info->size && info->start[0] <= base &&
190 base <= info->start[0] + info->size - 1)
198 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
200 if (sect != (info->sector_count - 1))
201 return info->start[sect + 1] - info->start[sect];
203 return info->start[0] + info->size - info->start[sect];
206 /*-----------------------------------------------------------------------
207 * create an address based on the offset and the port width
210 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
212 unsigned int byte_offset = offset * info->portwidth;
214 return (void *)(info->start[sect] + byte_offset);
217 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
218 unsigned int offset, void *addr)
222 /*-----------------------------------------------------------------------
223 * make a proper sized command based on the port and chip widths
225 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
230 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
231 u32 cmd_le = cpu_to_le32(cmd);
234 uchar *cp = (uchar *) cmdbuf;
236 for (i = info->portwidth; i > 0; i--){
237 cword_offset = (info->portwidth-i)%info->chipwidth;
238 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
239 cp_offset = info->portwidth - i;
240 val = *((uchar*)&cmd_le + cword_offset);
243 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
245 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
250 /*-----------------------------------------------------------------------
253 static void print_longlong (char *str, unsigned long long data)
259 for (i = 0; i < 8; i++)
260 sprintf (&str[i * 2], "%2.2x", *cp++);
263 static void flash_printqry (struct cfi_qry *qry)
268 for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
270 for (y = 0; y < 16; y++)
271 debug("%2.2x ", p[x + y]);
273 for (y = 0; y < 16; y++) {
274 unsigned char c = p[x + y];
275 if (c >= 0x20 && c <= 0x7e)
286 /*-----------------------------------------------------------------------
287 * read a character at a port width address
289 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
294 cp = flash_map (info, 0, offset);
295 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
296 retval = flash_read8(cp);
298 retval = flash_read8(cp + info->portwidth - 1);
300 flash_unmap (info, 0, offset, cp);
304 /*-----------------------------------------------------------------------
305 * read a word at a port width address, assume 16bit bus
307 static inline ushort flash_read_word (flash_info_t * info, uint offset)
309 ushort *addr, retval;
311 addr = flash_map (info, 0, offset);
312 retval = flash_read16 (addr);
313 flash_unmap (info, 0, offset, addr);
318 /*-----------------------------------------------------------------------
319 * read a long word by picking the least significant byte of each maximum
320 * port size word. Swap for ppc format.
322 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
331 addr = flash_map (info, sect, offset);
334 debug ("long addr is at %p info->portwidth = %d\n", addr,
336 for (x = 0; x < 4 * info->portwidth; x++) {
337 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
340 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
341 retval = ((flash_read8(addr) << 16) |
342 (flash_read8(addr + info->portwidth) << 24) |
343 (flash_read8(addr + 2 * info->portwidth)) |
344 (flash_read8(addr + 3 * info->portwidth) << 8));
346 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
347 (flash_read8(addr + info->portwidth - 1) << 16) |
348 (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
349 (flash_read8(addr + 3 * info->portwidth - 1)));
351 flash_unmap(info, sect, offset, addr);
357 * Write a proper sized command to the correct address
359 void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
360 uint offset, u32 cmd)
366 addr = flash_map (info, sect, offset);
367 flash_make_cmd (info, cmd, &cword);
368 switch (info->portwidth) {
370 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
371 cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
372 flash_write8(cword.c, addr);
374 case FLASH_CFI_16BIT:
375 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
377 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
378 flash_write16(cword.w, addr);
380 case FLASH_CFI_32BIT:
381 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
383 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
384 flash_write32(cword.l, addr);
386 case FLASH_CFI_64BIT:
391 print_longlong (str, cword.ll);
393 debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
395 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
398 flash_write64(cword.ll, addr);
402 /* Ensure all the instructions are fully finished */
405 flash_unmap(info, sect, offset, addr);
408 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
410 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
411 flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
414 /*-----------------------------------------------------------------------
416 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
417 uint offset, uchar cmd)
423 addr = flash_map (info, sect, offset);
424 flash_make_cmd (info, cmd, &cword);
426 debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
427 switch (info->portwidth) {
429 debug ("is= %x %x\n", flash_read8(addr), cword.c);
430 retval = (flash_read8(addr) == cword.c);
432 case FLASH_CFI_16BIT:
433 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
434 retval = (flash_read16(addr) == cword.w);
436 case FLASH_CFI_32BIT:
437 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
438 retval = (flash_read32(addr) == cword.l);
440 case FLASH_CFI_64BIT:
446 print_longlong (str1, flash_read64(addr));
447 print_longlong (str2, cword.ll);
448 debug ("is= %s %s\n", str1, str2);
451 retval = (flash_read64(addr) == cword.ll);
457 flash_unmap(info, sect, offset, addr);
462 /*-----------------------------------------------------------------------
464 static int flash_isset (flash_info_t * info, flash_sect_t sect,
465 uint offset, uchar cmd)
471 addr = flash_map (info, sect, offset);
472 flash_make_cmd (info, cmd, &cword);
473 switch (info->portwidth) {
475 retval = ((flash_read8(addr) & cword.c) == cword.c);
477 case FLASH_CFI_16BIT:
478 retval = ((flash_read16(addr) & cword.w) == cword.w);
480 case FLASH_CFI_32BIT:
481 retval = ((flash_read32(addr) & cword.l) == cword.l);
483 case FLASH_CFI_64BIT:
484 retval = ((flash_read64(addr) & cword.ll) == cword.ll);
490 flash_unmap(info, sect, offset, addr);
495 /*-----------------------------------------------------------------------
497 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
498 uint offset, uchar cmd)
504 addr = flash_map (info, sect, offset);
505 flash_make_cmd (info, cmd, &cword);
506 switch (info->portwidth) {
508 retval = flash_read8(addr) != flash_read8(addr);
510 case FLASH_CFI_16BIT:
511 retval = flash_read16(addr) != flash_read16(addr);
513 case FLASH_CFI_32BIT:
514 retval = flash_read32(addr) != flash_read32(addr);
516 case FLASH_CFI_64BIT:
517 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
518 (flash_read32(addr+4) != flash_read32(addr+4)) );
524 flash_unmap(info, sect, offset, addr);
530 * flash_is_busy - check to see if the flash is busy
532 * This routine checks the status of the chip and returns true if the
535 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
539 switch (info->vendor) {
540 case CFI_CMDSET_INTEL_PROG_REGIONS:
541 case CFI_CMDSET_INTEL_STANDARD:
542 case CFI_CMDSET_INTEL_EXTENDED:
543 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
545 case CFI_CMDSET_AMD_STANDARD:
546 case CFI_CMDSET_AMD_EXTENDED:
547 #ifdef CONFIG_FLASH_CFI_LEGACY
548 case CFI_CMDSET_AMD_LEGACY:
550 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
555 debug ("flash_is_busy: %d\n", retval);
559 /*-----------------------------------------------------------------------
560 * wait for XSR.7 to be set. Time out with an error if it does not.
561 * This routine does not set the flash to read-array mode.
563 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
564 ulong tout, char *prompt)
568 #if CONFIG_SYS_HZ != 1000
569 if ((ulong)CONFIG_SYS_HZ > 100000)
570 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
572 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
575 /* Wait for command completion */
577 start = get_timer (0);
578 while (flash_is_busy (info, sector)) {
579 if (get_timer (start) > tout) {
580 printf ("Flash %s timeout at address %lx data %lx\n",
581 prompt, info->start[sector],
582 flash_read_long (info, sector, 0));
583 flash_write_cmd (info, sector, 0, info->cmd_reset);
586 udelay (1); /* also triggers watchdog */
591 /*-----------------------------------------------------------------------
592 * Wait for XSR.7 to be set, if it times out print an error, otherwise
593 * do a full status check.
595 * This routine sets the flash to read-array mode.
597 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
598 ulong tout, char *prompt)
602 retcode = flash_status_check (info, sector, tout, prompt);
603 switch (info->vendor) {
604 case CFI_CMDSET_INTEL_PROG_REGIONS:
605 case CFI_CMDSET_INTEL_EXTENDED:
606 case CFI_CMDSET_INTEL_STANDARD:
607 if ((retcode != ERR_OK)
608 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
610 printf ("Flash %s error at address %lx\n", prompt,
611 info->start[sector]);
612 if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
613 FLASH_STATUS_PSLBS)) {
614 puts ("Command Sequence Error.\n");
615 } else if (flash_isset (info, sector, 0,
616 FLASH_STATUS_ECLBS)) {
617 puts ("Block Erase Error.\n");
618 retcode = ERR_NOT_ERASED;
619 } else if (flash_isset (info, sector, 0,
620 FLASH_STATUS_PSLBS)) {
621 puts ("Locking Error\n");
623 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
624 puts ("Block locked.\n");
625 retcode = ERR_PROTECTED;
627 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
628 puts ("Vpp Low Error.\n");
630 flash_write_cmd (info, sector, 0, info->cmd_reset);
638 static int use_flash_status_poll(flash_info_t *info)
640 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
641 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
642 info->vendor == CFI_CMDSET_AMD_STANDARD)
648 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
649 ulong tout, char *prompt)
651 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
655 #if CONFIG_SYS_HZ != 1000
656 if ((ulong)CONFIG_SYS_HZ > 100000)
657 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
659 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
662 /* Wait for command completion */
664 start = get_timer(0);
666 switch (info->portwidth) {
668 ready = flash_read8(dst) == flash_read8(src);
670 case FLASH_CFI_16BIT:
671 ready = flash_read16(dst) == flash_read16(src);
673 case FLASH_CFI_32BIT:
674 ready = flash_read32(dst) == flash_read32(src);
676 case FLASH_CFI_64BIT:
677 ready = flash_read64(dst) == flash_read64(src);
685 if (get_timer(start) > tout) {
686 printf("Flash %s timeout at address %lx data %lx\n",
687 prompt, (ulong)dst, (ulong)flash_read8(dst));
690 udelay(1); /* also triggers watchdog */
692 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
696 /*-----------------------------------------------------------------------
698 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
700 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
703 unsigned long long ll;
706 switch (info->portwidth) {
710 case FLASH_CFI_16BIT:
711 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
714 cword->w = (cword->w >> 8) | w;
716 cword->w = (cword->w << 8) | c;
719 case FLASH_CFI_32BIT:
720 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
723 cword->l = (cword->l >> 8) | l;
725 cword->l = (cword->l << 8) | c;
728 case FLASH_CFI_64BIT:
729 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
732 cword->ll = (cword->ll >> 8) | ll;
734 cword->ll = (cword->ll << 8) | c;
741 * Loop through the sector table starting from the previously found sector.
742 * Searches forwards or backwards, dependent on the passed address.
744 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
746 static flash_sect_t saved_sector = 0; /* previously found sector */
747 static flash_info_t *saved_info = 0; /* previously used flash bank */
748 flash_sect_t sector = saved_sector;
750 if ((info != saved_info) || (sector >= info->sector_count))
753 while ((info->start[sector] < addr)
754 && (sector < info->sector_count - 1))
756 while ((info->start[sector] > addr) && (sector > 0))
758 * also decrements the sector in case of an overshot
763 saved_sector = sector;
768 /*-----------------------------------------------------------------------
770 static int flash_write_cfiword (flash_info_t * info, ulong dest,
773 void *dstaddr = (void *)dest;
775 flash_sect_t sect = 0;
778 /* Check if Flash is (sufficiently) erased */
779 switch (info->portwidth) {
781 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
783 case FLASH_CFI_16BIT:
784 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
786 case FLASH_CFI_32BIT:
787 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
789 case FLASH_CFI_64BIT:
790 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
797 return ERR_NOT_ERASED;
799 /* Disable interrupts which might cause a timeout here */
800 flag = disable_interrupts ();
802 switch (info->vendor) {
803 case CFI_CMDSET_INTEL_PROG_REGIONS:
804 case CFI_CMDSET_INTEL_EXTENDED:
805 case CFI_CMDSET_INTEL_STANDARD:
806 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
807 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
809 case CFI_CMDSET_AMD_EXTENDED:
810 case CFI_CMDSET_AMD_STANDARD:
811 sect = find_sector(info, dest);
812 flash_unlock_seq (info, sect);
813 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
816 #ifdef CONFIG_FLASH_CFI_LEGACY
817 case CFI_CMDSET_AMD_LEGACY:
818 sect = find_sector(info, dest);
819 flash_unlock_seq (info, 0);
820 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
826 switch (info->portwidth) {
828 flash_write8(cword.c, dstaddr);
830 case FLASH_CFI_16BIT:
831 flash_write16(cword.w, dstaddr);
833 case FLASH_CFI_32BIT:
834 flash_write32(cword.l, dstaddr);
836 case FLASH_CFI_64BIT:
837 flash_write64(cword.ll, dstaddr);
841 /* re-enable interrupts if necessary */
843 enable_interrupts ();
846 sect = find_sector (info, dest);
848 if (use_flash_status_poll(info))
849 return flash_status_poll(info, &cword, dstaddr,
850 info->write_tout, "write");
852 return flash_full_status_check(info, sect,
853 info->write_tout, "write");
856 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
858 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
865 void *dst = (void *)dest;
872 switch (info->portwidth) {
876 case FLASH_CFI_16BIT:
879 case FLASH_CFI_32BIT:
882 case FLASH_CFI_64BIT:
892 while ((cnt-- > 0) && (flag == 0)) {
893 switch (info->portwidth) {
895 flag = ((flash_read8(dst2) & flash_read8(src)) ==
899 case FLASH_CFI_16BIT:
900 flag = ((flash_read16(dst2) & flash_read16(src)) ==
904 case FLASH_CFI_32BIT:
905 flag = ((flash_read32(dst2) & flash_read32(src)) ==
909 case FLASH_CFI_64BIT:
910 flag = ((flash_read64(dst2) & flash_read64(src)) ==
917 retcode = ERR_NOT_ERASED;
922 sector = find_sector (info, dest);
924 switch (info->vendor) {
925 case CFI_CMDSET_INTEL_PROG_REGIONS:
926 case CFI_CMDSET_INTEL_STANDARD:
927 case CFI_CMDSET_INTEL_EXTENDED:
928 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
929 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
930 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
931 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
932 flash_write_cmd (info, sector, 0, write_cmd);
933 retcode = flash_status_check (info, sector,
934 info->buffer_write_tout,
936 if (retcode == ERR_OK) {
937 /* reduce the number of loops by the width of
940 flash_write_cmd (info, sector, 0, cnt - 1);
942 switch (info->portwidth) {
944 flash_write8(flash_read8(src), dst);
947 case FLASH_CFI_16BIT:
948 flash_write16(flash_read16(src), dst);
951 case FLASH_CFI_32BIT:
952 flash_write32(flash_read32(src), dst);
955 case FLASH_CFI_64BIT:
956 flash_write64(flash_read64(src), dst);
964 flash_write_cmd (info, sector, 0,
965 FLASH_CMD_WRITE_BUFFER_CONFIRM);
966 retcode = flash_full_status_check (
967 info, sector, info->buffer_write_tout,
973 case CFI_CMDSET_AMD_STANDARD:
974 case CFI_CMDSET_AMD_EXTENDED:
975 flash_unlock_seq(info,0);
977 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
978 offset = ((unsigned long)dst - info->start[sector]) >> shift;
980 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
982 flash_write_cmd(info, sector, offset, cnt - 1);
984 switch (info->portwidth) {
987 flash_write8(flash_read8(src), dst);
991 case FLASH_CFI_16BIT:
993 flash_write16(flash_read16(src), dst);
997 case FLASH_CFI_32BIT:
999 flash_write32(flash_read32(src), dst);
1003 case FLASH_CFI_64BIT:
1005 flash_write64(flash_read64(src), dst);
1010 retcode = ERR_INVAL;
1014 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1015 if (use_flash_status_poll(info))
1016 retcode = flash_status_poll(info, src - (1 << shift),
1018 info->buffer_write_tout,
1021 retcode = flash_full_status_check(info, sector,
1022 info->buffer_write_tout,
1027 debug ("Unknown Command Set\n");
1028 retcode = ERR_INVAL;
1035 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1038 /*-----------------------------------------------------------------------
1040 int flash_erase (flash_info_t * info, int s_first, int s_last)
1047 if (info->flash_id != FLASH_MAN_CFI) {
1048 puts ("Can't erase unknown flash type - aborted\n");
1051 if ((s_first < 0) || (s_first > s_last)) {
1052 puts ("- no sectors to erase\n");
1057 for (sect = s_first; sect <= s_last; ++sect) {
1058 if (info->protect[sect]) {
1063 printf ("- Warning: %d protected sectors will not be erased!\n",
1065 } else if (flash_verbose) {
1070 for (sect = s_first; sect <= s_last; sect++) {
1071 if (info->protect[sect] == 0) { /* not protected */
1072 switch (info->vendor) {
1073 case CFI_CMDSET_INTEL_PROG_REGIONS:
1074 case CFI_CMDSET_INTEL_STANDARD:
1075 case CFI_CMDSET_INTEL_EXTENDED:
1076 flash_write_cmd (info, sect, 0,
1077 FLASH_CMD_CLEAR_STATUS);
1078 flash_write_cmd (info, sect, 0,
1079 FLASH_CMD_BLOCK_ERASE);
1080 flash_write_cmd (info, sect, 0,
1081 FLASH_CMD_ERASE_CONFIRM);
1083 case CFI_CMDSET_AMD_STANDARD:
1084 case CFI_CMDSET_AMD_EXTENDED:
1085 flash_unlock_seq (info, sect);
1086 flash_write_cmd (info, sect,
1088 AMD_CMD_ERASE_START);
1089 flash_unlock_seq (info, sect);
1090 flash_write_cmd (info, sect, 0,
1091 AMD_CMD_ERASE_SECTOR);
1093 #ifdef CONFIG_FLASH_CFI_LEGACY
1094 case CFI_CMDSET_AMD_LEGACY:
1095 flash_unlock_seq (info, 0);
1096 flash_write_cmd (info, 0, info->addr_unlock1,
1097 AMD_CMD_ERASE_START);
1098 flash_unlock_seq (info, 0);
1099 flash_write_cmd (info, sect, 0,
1100 AMD_CMD_ERASE_SECTOR);
1104 debug ("Unkown flash vendor %d\n",
1109 if (use_flash_status_poll(info)) {
1110 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL;
1112 dest = flash_map(info, sect, 0);
1113 st = flash_status_poll(info, &cword, dest,
1114 info->erase_blk_tout, "erase");
1115 flash_unmap(info, sect, 0, dest);
1117 st = flash_full_status_check(info, sect,
1118 info->erase_blk_tout,
1122 else if (flash_verbose)
1133 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1134 static int sector_erased(flash_info_t *info, int i)
1141 * Check if whole sector is erased
1143 size = flash_sector_size(info, i);
1144 flash = (u32 *)info->start[i];
1145 /* divide by 4 for longword access */
1148 for (k = 0; k < size; k++) {
1149 if (flash_read32(flash++) != 0xffffffff)
1150 return 0; /* not erased */
1153 return 1; /* erased */
1155 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1157 void flash_print_info (flash_info_t * info)
1161 if (info->flash_id != FLASH_MAN_CFI) {
1162 puts ("missing or unknown FLASH type\n");
1166 printf ("%s flash (%d x %d)",
1168 (info->portwidth << 3), (info->chipwidth << 3));
1169 if (info->size < 1024*1024)
1170 printf (" Size: %ld kB in %d Sectors\n",
1171 info->size >> 10, info->sector_count);
1173 printf (" Size: %ld MB in %d Sectors\n",
1174 info->size >> 20, info->sector_count);
1176 switch (info->vendor) {
1177 case CFI_CMDSET_INTEL_PROG_REGIONS:
1178 printf ("Intel Prog Regions");
1180 case CFI_CMDSET_INTEL_STANDARD:
1181 printf ("Intel Standard");
1183 case CFI_CMDSET_INTEL_EXTENDED:
1184 printf ("Intel Extended");
1186 case CFI_CMDSET_AMD_STANDARD:
1187 printf ("AMD Standard");
1189 case CFI_CMDSET_AMD_EXTENDED:
1190 printf ("AMD Extended");
1192 #ifdef CONFIG_FLASH_CFI_LEGACY
1193 case CFI_CMDSET_AMD_LEGACY:
1194 printf ("AMD Legacy");
1198 printf ("Unknown (%d)", info->vendor);
1201 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1202 info->manufacturer_id);
1203 printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1205 if (info->device_id == 0x7E) {
1206 printf("%04X", info->device_id2);
1208 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1209 info->erase_blk_tout,
1211 if (info->buffer_size > 1) {
1212 printf (" Buffer write timeout: %ld ms, "
1213 "buffer size: %d bytes\n",
1214 info->buffer_write_tout,
1218 puts ("\n Sector Start Addresses:");
1219 for (i = 0; i < info->sector_count; ++i) {
1224 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1225 /* print empty and read-only info */
1226 printf (" %08lX %c %s ",
1228 sector_erased(info, i) ? 'E' : ' ',
1229 info->protect[i] ? "RO" : " ");
1230 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1231 printf (" %08lX %s ",
1233 info->protect[i] ? "RO" : " ");
1240 /*-----------------------------------------------------------------------
1241 * This is used in a few places in write_buf() to show programming
1242 * progress. Making it a function is nasty because it needs to do side
1243 * effect updates to digit and dots. Repeated code is nasty too, so
1244 * we define it once here.
1246 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1247 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1248 if (flash_verbose) { \
1250 if ((scale > 0) && (dots <= 0)) { \
1251 if ((digit % 5) == 0) \
1252 printf ("%d", digit / 5); \
1260 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1263 /*-----------------------------------------------------------------------
1264 * Copy memory to flash, returns:
1267 * 2 - Flash not erased
1269 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1276 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1279 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1280 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1285 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1287 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1288 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1289 CONFIG_FLASH_SHOW_PROGRESS);
1293 /* get lower aligned address */
1294 wp = (addr & ~(info->portwidth - 1));
1296 /* handle unaligned start */
1297 if ((aln = addr - wp) != 0) {
1300 for (i = 0; i < aln; ++i)
1301 flash_add_byte (info, &cword, flash_read8(p + i));
1303 for (; (i < info->portwidth) && (cnt > 0); i++) {
1304 flash_add_byte (info, &cword, *src++);
1307 for (; (cnt == 0) && (i < info->portwidth); ++i)
1308 flash_add_byte (info, &cword, flash_read8(p + i));
1310 rc = flash_write_cfiword (info, wp, cword);
1315 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1318 /* handle the aligned part */
1319 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1320 buffered_size = (info->portwidth / info->chipwidth);
1321 buffered_size *= info->buffer_size;
1322 while (cnt >= info->portwidth) {
1323 /* prohibit buffer write when buffer_size is 1 */
1324 if (info->buffer_size == 1) {
1326 for (i = 0; i < info->portwidth; i++)
1327 flash_add_byte (info, &cword, *src++);
1328 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1330 wp += info->portwidth;
1331 cnt -= info->portwidth;
1335 /* write buffer until next buffered_size aligned boundary */
1336 i = buffered_size - (wp % buffered_size);
1339 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1341 i -= i & (info->portwidth - 1);
1345 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1348 while (cnt >= info->portwidth) {
1350 for (i = 0; i < info->portwidth; i++) {
1351 flash_add_byte (info, &cword, *src++);
1353 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1355 wp += info->portwidth;
1356 cnt -= info->portwidth;
1357 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1359 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1366 * handle unaligned tail bytes
1370 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1371 flash_add_byte (info, &cword, *src++);
1374 for (; i < info->portwidth; ++i)
1375 flash_add_byte (info, &cword, flash_read8(p + i));
1377 return flash_write_cfiword (info, wp, cword);
1380 /*-----------------------------------------------------------------------
1382 #ifdef CONFIG_SYS_FLASH_PROTECTION
1384 int flash_real_protect (flash_info_t * info, long sector, int prot)
1388 switch (info->vendor) {
1389 case CFI_CMDSET_INTEL_PROG_REGIONS:
1390 case CFI_CMDSET_INTEL_STANDARD:
1391 case CFI_CMDSET_INTEL_EXTENDED:
1394 * "Numonyx Axcell P33/P30 Specification Update" :)
1396 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_ID);
1397 if (!flash_isequal (info, sector, FLASH_OFFSET_PROTECT,
1400 * cmd must come before FLASH_CMD_PROTECT + 20us
1401 * Disable interrupts which might cause a timeout here.
1403 int flag = disable_interrupts ();
1407 cmd = FLASH_CMD_PROTECT_SET;
1409 cmd = FLASH_CMD_PROTECT_CLEAR;
1411 flash_write_cmd (info, sector, 0,
1413 flash_write_cmd (info, sector, 0, cmd);
1414 /* re-enable interrupts if necessary */
1416 enable_interrupts ();
1419 case CFI_CMDSET_AMD_EXTENDED:
1420 case CFI_CMDSET_AMD_STANDARD:
1421 /* U-Boot only checks the first byte */
1422 if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1424 flash_unlock_seq (info, 0);
1425 flash_write_cmd (info, 0,
1427 ATM_CMD_SOFTLOCK_START);
1428 flash_unlock_seq (info, 0);
1429 flash_write_cmd (info, sector, 0,
1432 flash_write_cmd (info, 0,
1434 AMD_CMD_UNLOCK_START);
1435 if (info->device_id == ATM_ID_BV6416)
1436 flash_write_cmd (info, sector,
1437 0, ATM_CMD_UNLOCK_SECT);
1441 #ifdef CONFIG_FLASH_CFI_LEGACY
1442 case CFI_CMDSET_AMD_LEGACY:
1443 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1444 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1446 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1448 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1453 * Flash needs to be in status register read mode for
1454 * flash_full_status_check() to work correctly
1456 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1458 flash_full_status_check (info, sector, info->erase_blk_tout,
1459 prot ? "protect" : "unprotect")) == 0) {
1461 info->protect[sector] = prot;
1464 * On some of Intel's flash chips (marked via legacy_unlock)
1465 * unprotect unprotects all locking.
1467 if ((prot == 0) && (info->legacy_unlock)) {
1470 for (i = 0; i < info->sector_count; i++) {
1471 if (info->protect[i])
1472 flash_real_protect (info, i, 1);
1479 /*-----------------------------------------------------------------------
1480 * flash_read_user_serial - read the OneTimeProgramming cells
1482 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1489 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1490 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1491 memcpy (dst, src + offset, len);
1492 flash_write_cmd (info, 0, 0, info->cmd_reset);
1493 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1497 * flash_read_factory_serial - read the device Id from the protection area
1499 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1504 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1505 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1506 memcpy (buffer, src + offset, len);
1507 flash_write_cmd (info, 0, 0, info->cmd_reset);
1508 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1511 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1513 /*-----------------------------------------------------------------------
1514 * Reverse the order of the erase regions in the CFI QRY structure.
1515 * This is needed for chips that are either a) correctly detected as
1516 * top-boot, or b) buggy.
1518 static void cfi_reverse_geometry(struct cfi_qry *qry)
1523 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1524 tmp = qry->erase_region_info[i];
1525 qry->erase_region_info[i] = qry->erase_region_info[j];
1526 qry->erase_region_info[j] = tmp;
1530 /*-----------------------------------------------------------------------
1531 * read jedec ids from device and set corresponding fields in info struct
1533 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1536 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1538 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1539 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1540 udelay(1000); /* some flash are slow to respond */
1541 info->manufacturer_id = flash_read_uchar (info,
1542 FLASH_OFFSET_MANUFACTURER_ID);
1543 info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1544 flash_read_word (info, FLASH_OFFSET_DEVICE_ID) :
1545 flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID);
1546 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1549 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1551 info->cmd_reset = FLASH_CMD_RESET;
1553 cmdset_intel_read_jedec_ids(info);
1554 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1556 #ifdef CONFIG_SYS_FLASH_PROTECTION
1557 /* read legacy lock/unlock bit from intel flash */
1558 if (info->ext_addr) {
1559 info->legacy_unlock = flash_read_uchar (info,
1560 info->ext_addr + 5) & 0x08;
1567 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1572 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1573 flash_unlock_seq(info, 0);
1574 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1575 udelay(1000); /* some flash are slow to respond */
1577 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1578 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1579 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1581 manuId = flash_read_uchar (info,
1582 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1584 info->manufacturer_id = manuId;
1586 switch (info->chipwidth){
1587 case FLASH_CFI_8BIT:
1588 info->device_id = flash_read_uchar (info,
1589 FLASH_OFFSET_DEVICE_ID);
1590 if (info->device_id == 0x7E) {
1591 /* AMD 3-byte (expanded) device ids */
1592 info->device_id2 = flash_read_uchar (info,
1593 FLASH_OFFSET_DEVICE_ID2);
1594 info->device_id2 <<= 8;
1595 info->device_id2 |= flash_read_uchar (info,
1596 FLASH_OFFSET_DEVICE_ID3);
1599 case FLASH_CFI_16BIT:
1600 info->device_id = flash_read_word (info,
1601 FLASH_OFFSET_DEVICE_ID);
1606 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1609 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1611 info->cmd_reset = AMD_CMD_RESET;
1613 cmdset_amd_read_jedec_ids(info);
1614 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1619 #ifdef CONFIG_FLASH_CFI_LEGACY
1620 static void flash_read_jedec_ids (flash_info_t * info)
1622 info->manufacturer_id = 0;
1623 info->device_id = 0;
1624 info->device_id2 = 0;
1626 switch (info->vendor) {
1627 case CFI_CMDSET_INTEL_PROG_REGIONS:
1628 case CFI_CMDSET_INTEL_STANDARD:
1629 case CFI_CMDSET_INTEL_EXTENDED:
1630 cmdset_intel_read_jedec_ids(info);
1632 case CFI_CMDSET_AMD_STANDARD:
1633 case CFI_CMDSET_AMD_EXTENDED:
1634 cmdset_amd_read_jedec_ids(info);
1641 /*-----------------------------------------------------------------------
1642 * Call board code to request info about non-CFI flash.
1643 * board_flash_get_legacy needs to fill in at least:
1644 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1646 static int flash_detect_legacy(phys_addr_t base, int banknum)
1648 flash_info_t *info = &flash_info[banknum];
1650 if (board_flash_get_legacy(base, banknum, info)) {
1651 /* board code may have filled info completely. If not, we
1652 use JEDEC ID probing. */
1653 if (!info->vendor) {
1655 CFI_CMDSET_AMD_STANDARD,
1656 CFI_CMDSET_INTEL_STANDARD
1660 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1661 info->vendor = modes[i];
1663 (ulong)map_physmem(base,
1666 if (info->portwidth == FLASH_CFI_8BIT
1667 && info->interface == FLASH_CFI_X8X16) {
1668 info->addr_unlock1 = 0x2AAA;
1669 info->addr_unlock2 = 0x5555;
1671 info->addr_unlock1 = 0x5555;
1672 info->addr_unlock2 = 0x2AAA;
1674 flash_read_jedec_ids(info);
1675 debug("JEDEC PROBE: ID %x %x %x\n",
1676 info->manufacturer_id,
1679 if (jedec_flash_match(info, info->start[0]))
1682 unmap_physmem((void *)info->start[0],
1687 switch(info->vendor) {
1688 case CFI_CMDSET_INTEL_PROG_REGIONS:
1689 case CFI_CMDSET_INTEL_STANDARD:
1690 case CFI_CMDSET_INTEL_EXTENDED:
1691 info->cmd_reset = FLASH_CMD_RESET;
1693 case CFI_CMDSET_AMD_STANDARD:
1694 case CFI_CMDSET_AMD_EXTENDED:
1695 case CFI_CMDSET_AMD_LEGACY:
1696 info->cmd_reset = AMD_CMD_RESET;
1699 info->flash_id = FLASH_MAN_CFI;
1702 return 0; /* use CFI */
1705 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1707 return 0; /* use CFI */
1711 /*-----------------------------------------------------------------------
1712 * detect if flash is compatible with the Common Flash Interface (CFI)
1713 * http://www.jedec.org/download/search/jesd68.pdf
1715 static void flash_read_cfi (flash_info_t *info, void *buf,
1716 unsigned int start, size_t len)
1721 for (i = 0; i < len; i++)
1722 p[i] = flash_read_uchar(info, start + i);
1725 void __flash_cmd_reset(flash_info_t *info)
1728 * We do not yet know what kind of commandset to use, so we issue
1729 * the reset command in both Intel and AMD variants, in the hope
1730 * that AMD flash roms ignore the Intel command.
1732 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1733 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1735 void flash_cmd_reset(flash_info_t *info)
1736 __attribute__((weak,alias("__flash_cmd_reset")));
1738 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1742 /* Issue FLASH reset command */
1743 flash_cmd_reset(info);
1746 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1748 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1750 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1751 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1752 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1753 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1754 sizeof(struct cfi_qry));
1755 info->interface = le16_to_cpu(qry->interface_desc);
1757 info->cfi_offset = flash_offset_cfi[cfi_offset];
1758 debug ("device interface is %d\n",
1760 debug ("found port %d chip %d ",
1761 info->portwidth, info->chipwidth);
1762 debug ("port %d bits chip %d bits\n",
1763 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1764 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1766 /* calculate command offsets as in the Linux driver */
1767 info->addr_unlock1 = 0x555;
1768 info->addr_unlock2 = 0x2aa;
1771 * modify the unlock address if we are
1772 * in compatibility mode
1774 if ( /* x8/x16 in x8 mode */
1775 ((info->chipwidth == FLASH_CFI_BY8) &&
1776 (info->interface == FLASH_CFI_X8X16)) ||
1777 /* x16/x32 in x16 mode */
1778 ((info->chipwidth == FLASH_CFI_BY16) &&
1779 (info->interface == FLASH_CFI_X16X32)))
1781 info->addr_unlock1 = 0xaaa;
1782 info->addr_unlock2 = 0x555;
1785 info->name = "CFI conformant";
1793 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1795 debug ("flash detect cfi\n");
1797 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1798 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1799 for (info->chipwidth = FLASH_CFI_BY8;
1800 info->chipwidth <= info->portwidth;
1801 info->chipwidth <<= 1)
1802 if (__flash_detect_cfi(info, qry))
1805 debug ("not found\n");
1810 * Manufacturer-specific quirks. Add workarounds for geometry
1811 * reversal, etc. here.
1813 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1815 /* check if flash geometry needs reversal */
1816 if (qry->num_erase_regions > 1) {
1817 /* reverse geometry if top boot part */
1818 if (info->cfi_version < 0x3131) {
1819 /* CFI < 1.1, try to guess from device id */
1820 if ((info->device_id & 0x80) != 0)
1821 cfi_reverse_geometry(qry);
1822 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1823 /* CFI >= 1.1, deduct from top/bottom flag */
1824 /* note: ext_addr is valid since cfi_version > 0 */
1825 cfi_reverse_geometry(qry);
1830 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1832 int reverse_geometry = 0;
1834 /* Check the "top boot" bit in the PRI */
1835 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1836 reverse_geometry = 1;
1838 /* AT49BV6416(T) list the erase regions in the wrong order.
1839 * However, the device ID is identical with the non-broken
1840 * AT49BV642D they differ in the high byte.
1842 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1843 reverse_geometry = !reverse_geometry;
1845 if (reverse_geometry)
1846 cfi_reverse_geometry(qry);
1849 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1851 /* check if flash geometry needs reversal */
1852 if (qry->num_erase_regions > 1) {
1853 /* reverse geometry if top boot part */
1854 if (info->cfi_version < 0x3131) {
1855 /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1856 if (info->device_id == 0x22CA ||
1857 info->device_id == 0x2256) {
1858 cfi_reverse_geometry(qry);
1865 * The following code cannot be run from FLASH!
1868 ulong flash_get_size (phys_addr_t base, int banknum)
1870 flash_info_t *info = &flash_info[banknum];
1872 flash_sect_t sect_cnt;
1876 uchar num_erase_regions;
1877 int erase_region_size;
1878 int erase_region_count;
1880 unsigned long max_size;
1882 memset(&qry, 0, sizeof(qry));
1885 info->cfi_version = 0;
1886 #ifdef CONFIG_SYS_FLASH_PROTECTION
1887 info->legacy_unlock = 0;
1890 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1892 if (flash_detect_cfi (info, &qry)) {
1893 info->vendor = le16_to_cpu(qry.p_id);
1894 info->ext_addr = le16_to_cpu(qry.p_adr);
1895 num_erase_regions = qry.num_erase_regions;
1897 if (info->ext_addr) {
1898 info->cfi_version = (ushort) flash_read_uchar (info,
1899 info->ext_addr + 3) << 8;
1900 info->cfi_version |= (ushort) flash_read_uchar (info,
1901 info->ext_addr + 4);
1905 flash_printqry (&qry);
1908 switch (info->vendor) {
1909 case CFI_CMDSET_INTEL_PROG_REGIONS:
1910 case CFI_CMDSET_INTEL_STANDARD:
1911 case CFI_CMDSET_INTEL_EXTENDED:
1912 cmdset_intel_init(info, &qry);
1914 case CFI_CMDSET_AMD_STANDARD:
1915 case CFI_CMDSET_AMD_EXTENDED:
1916 cmdset_amd_init(info, &qry);
1919 printf("CFI: Unknown command set 0x%x\n",
1922 * Unfortunately, this means we don't know how
1923 * to get the chip back to Read mode. Might
1924 * as well try an Intel-style reset...
1926 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1930 /* Do manufacturer-specific fixups */
1931 switch (info->manufacturer_id) {
1932 case 0x0001: /* AMD */
1933 case 0x0037: /* AMIC */
1934 flash_fixup_amd(info, &qry);
1937 flash_fixup_atmel(info, &qry);
1940 flash_fixup_stm(info, &qry);
1944 debug ("manufacturer is %d\n", info->vendor);
1945 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1946 debug ("device id is 0x%x\n", info->device_id);
1947 debug ("device id2 is 0x%x\n", info->device_id2);
1948 debug ("cfi version is 0x%04x\n", info->cfi_version);
1950 size_ratio = info->portwidth / info->chipwidth;
1951 /* if the chip is x8/x16 reduce the ratio by half */
1952 if ((info->interface == FLASH_CFI_X8X16)
1953 && (info->chipwidth == FLASH_CFI_BY8)) {
1956 debug ("size_ratio %d port %d bits chip %d bits\n",
1957 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1958 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1959 info->size = 1 << qry.dev_size;
1960 /* multiply the size by the number of chips */
1961 info->size *= size_ratio;
1962 max_size = cfi_flash_bank_size(banknum);
1963 if (max_size && (info->size > max_size)) {
1964 debug("[truncated from %ldMiB]", info->size >> 20);
1965 info->size = max_size;
1967 debug ("found %d erase regions\n", num_erase_regions);
1970 for (i = 0; i < num_erase_regions; i++) {
1971 if (i > NUM_ERASE_REGIONS) {
1972 printf ("%d erase regions found, only %d used\n",
1973 num_erase_regions, NUM_ERASE_REGIONS);
1977 tmp = le32_to_cpu(qry.erase_region_info[i]);
1978 debug("erase region %u: 0x%08lx\n", i, tmp);
1980 erase_region_count = (tmp & 0xffff) + 1;
1983 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1984 debug ("erase_region_count = %d erase_region_size = %d\n",
1985 erase_region_count, erase_region_size);
1986 for (j = 0; j < erase_region_count; j++) {
1987 if (sector - base >= info->size)
1989 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1990 printf("ERROR: too many flash sectors\n");
1993 info->start[sect_cnt] =
1994 (ulong)map_physmem(sector,
1997 sector += (erase_region_size * size_ratio);
2000 * Only read protection status from
2001 * supported devices (intel...)
2003 switch (info->vendor) {
2004 case CFI_CMDSET_INTEL_PROG_REGIONS:
2005 case CFI_CMDSET_INTEL_EXTENDED:
2006 case CFI_CMDSET_INTEL_STANDARD:
2008 * Set flash to read-id mode. Otherwise
2009 * reading protected status is not
2012 flash_write_cmd(info, sect_cnt, 0,
2014 info->protect[sect_cnt] =
2015 flash_isset (info, sect_cnt,
2016 FLASH_OFFSET_PROTECT,
2017 FLASH_STATUS_PROTECT);
2020 /* default: not protected */
2021 info->protect[sect_cnt] = 0;
2028 info->sector_count = sect_cnt;
2029 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2030 tmp = 1 << qry.block_erase_timeout_typ;
2031 info->erase_blk_tout = tmp *
2032 (1 << qry.block_erase_timeout_max);
2033 tmp = (1 << qry.buf_write_timeout_typ) *
2034 (1 << qry.buf_write_timeout_max);
2036 /* round up when converting to ms */
2037 info->buffer_write_tout = (tmp + 999) / 1000;
2038 tmp = (1 << qry.word_write_timeout_typ) *
2039 (1 << qry.word_write_timeout_max);
2040 /* round up when converting to ms */
2041 info->write_tout = (tmp + 999) / 1000;
2042 info->flash_id = FLASH_MAN_CFI;
2043 if ((info->interface == FLASH_CFI_X8X16) &&
2044 (info->chipwidth == FLASH_CFI_BY8)) {
2045 /* XXX - Need to test on x8/x16 in parallel. */
2046 info->portwidth >>= 1;
2049 flash_write_cmd (info, 0, 0, info->cmd_reset);
2052 return (info->size);
2055 #ifdef CONFIG_FLASH_CFI_MTD
2056 void flash_set_verbose(uint v)
2062 static void cfi_flash_set_config_reg(u32 base, u16 val)
2064 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2066 * Only set this config register if really defined
2067 * to a valid value (0xffff is invalid)
2073 * Set configuration register. Data is "encrypted" in the 16 lower
2076 flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2077 flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2080 * Finally issue reset-command to bring device back to
2083 flash_write16(FLASH_CMD_RESET, (void *)base);
2087 /*-----------------------------------------------------------------------
2090 void flash_protect_default(void)
2092 /* Monitor protection ON by default */
2093 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2094 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2095 flash_protect(FLAG_PROTECT_SET,
2096 CONFIG_SYS_MONITOR_BASE,
2097 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2098 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2101 /* Environment protection ON by default */
2102 #ifdef CONFIG_ENV_IS_IN_FLASH
2103 flash_protect(FLAG_PROTECT_SET,
2105 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2106 flash_get_info(CONFIG_ENV_ADDR));
2109 /* Redundant environment protection ON by default */
2110 #ifdef CONFIG_ENV_ADDR_REDUND
2111 flash_protect(FLAG_PROTECT_SET,
2112 CONFIG_ENV_ADDR_REDUND,
2113 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2114 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2117 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2118 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2119 debug("autoprotecting from %08x to %08x\n",
2120 apl[i].start, apl[i].start + apl[i].size - 1);
2121 flash_protect(FLAG_PROTECT_SET,
2123 apl[i].start + apl[i].size - 1,
2124 flash_get_info(apl[i].start));
2129 unsigned long flash_init (void)
2131 unsigned long size = 0;
2133 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2137 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2140 #ifdef CONFIG_SYS_FLASH_PROTECTION
2141 /* read environment from EEPROM */
2143 getenv_f("unlock", s, sizeof(s));
2146 /* Init: no FLASHes known */
2147 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2148 flash_info[i].flash_id = FLASH_UNKNOWN;
2150 /* Optionally write flash configuration register */
2151 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2152 cfi_flash_config_reg(i));
2154 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2155 flash_get_size(cfi_flash_bank_addr(i), i);
2156 size += flash_info[i].size;
2157 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2158 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2159 printf ("## Unknown flash on Bank %d "
2160 "- Size = 0x%08lx = %ld MB\n",
2161 i+1, flash_info[i].size,
2162 flash_info[i].size >> 20);
2163 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2165 #ifdef CONFIG_SYS_FLASH_PROTECTION
2166 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2168 * Only the U-Boot image and it's environment
2169 * is protected, all other sectors are
2170 * unprotected (unlocked) if flash hardware
2171 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2172 * and the environment variable "unlock" is
2175 if (flash_info[i].legacy_unlock) {
2179 * Disable legacy_unlock temporarily,
2180 * since flash_real_protect would
2181 * relock all other sectors again
2184 flash_info[i].legacy_unlock = 0;
2187 * Legacy unlocking (e.g. Intel J3) ->
2188 * unlock only one sector. This will
2189 * unlock all sectors.
2191 flash_real_protect (&flash_info[i], 0, 0);
2193 flash_info[i].legacy_unlock = 1;
2196 * Manually mark other sectors as
2197 * unlocked (unprotected)
2199 for (k = 1; k < flash_info[i].sector_count; k++)
2200 flash_info[i].protect[k] = 0;
2203 * No legancy unlocking -> unlock all sectors
2205 flash_protect (FLAG_PROTECT_CLEAR,
2206 flash_info[i].start[0],
2207 flash_info[i].start[0]
2208 + flash_info[i].size - 1,
2212 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2215 flash_protect_default();
2216 #ifdef CONFIG_FLASH_CFI_MTD