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 <asm/unaligned.h>
42 #include <environment.h>
43 #include <mtd/cfi_flash.h>
47 * This file implements a Common Flash Interface (CFI) driver for
50 * The width of the port and the width of the chips are determined at
51 * initialization. These widths are used to calculate the address for
52 * access CFI data structures.
55 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
56 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
57 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
58 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
59 * AMD CFI Specification, Release 2.0 December 1, 2001
60 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
61 * Device IDs, Publication Number 25538 Revision A, November 8, 2001
63 * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
64 * reading and writing ... (yes there is such a Hardware).
67 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
68 #ifdef CONFIG_FLASH_CFI_MTD
69 static uint flash_verbose = 1;
71 #define flash_verbose 1
74 flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
77 * Check if chip width is defined. If not, start detecting with 8bit.
79 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
80 #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
84 * 0xffff is an undefined value for the configuration register. When
85 * this value is returned, the configuration register shall not be
86 * written at all (default mode).
88 static u16 cfi_flash_config_reg(int i)
90 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
91 return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
97 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
98 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
101 static phys_addr_t __cfi_flash_bank_addr(int i)
103 return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
105 phys_addr_t cfi_flash_bank_addr(int i)
106 __attribute__((weak, alias("__cfi_flash_bank_addr")));
108 static unsigned long __cfi_flash_bank_size(int i)
110 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
111 return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
116 unsigned long cfi_flash_bank_size(int i)
117 __attribute__((weak, alias("__cfi_flash_bank_size")));
119 static void __flash_write8(u8 value, void *addr)
121 __raw_writeb(value, addr);
124 static void __flash_write16(u16 value, void *addr)
126 __raw_writew(value, addr);
129 static void __flash_write32(u32 value, void *addr)
131 __raw_writel(value, addr);
134 static void __flash_write64(u64 value, void *addr)
136 /* No architectures currently implement __raw_writeq() */
137 *(volatile u64 *)addr = value;
140 static u8 __flash_read8(void *addr)
142 return __raw_readb(addr);
145 static u16 __flash_read16(void *addr)
147 return __raw_readw(addr);
150 static u32 __flash_read32(void *addr)
152 return __raw_readl(addr);
155 static u64 __flash_read64(void *addr)
157 /* No architectures currently implement __raw_readq() */
158 return *(volatile u64 *)addr;
161 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
162 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
163 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
164 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
165 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
166 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
167 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
168 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
169 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
171 #define flash_write8 __flash_write8
172 #define flash_write16 __flash_write16
173 #define flash_write32 __flash_write32
174 #define flash_write64 __flash_write64
175 #define flash_read8 __flash_read8
176 #define flash_read16 __flash_read16
177 #define flash_read32 __flash_read32
178 #define flash_read64 __flash_read64
181 /*-----------------------------------------------------------------------
183 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
184 flash_info_t *flash_get_info(ulong base)
189 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
190 info = &flash_info[i];
191 if (info->size && info->start[0] <= base &&
192 base <= info->start[0] + info->size - 1)
200 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
202 if (sect != (info->sector_count - 1))
203 return info->start[sect + 1] - info->start[sect];
205 return info->start[0] + info->size - info->start[sect];
208 /*-----------------------------------------------------------------------
209 * create an address based on the offset and the port width
212 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
214 unsigned int byte_offset = offset * info->portwidth;
216 return (void *)(info->start[sect] + byte_offset);
219 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
220 unsigned int offset, void *addr)
224 /*-----------------------------------------------------------------------
225 * make a proper sized command based on the port and chip widths
227 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
232 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
233 u32 cmd_le = cpu_to_le32(cmd);
236 uchar *cp = (uchar *) cmdbuf;
238 for (i = info->portwidth; i > 0; i--){
239 cword_offset = (info->portwidth-i)%info->chipwidth;
240 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
241 cp_offset = info->portwidth - i;
242 val = *((uchar*)&cmd_le + cword_offset);
245 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
247 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
252 /*-----------------------------------------------------------------------
255 static void print_longlong (char *str, unsigned long long data)
261 for (i = 0; i < 8; i++)
262 sprintf (&str[i * 2], "%2.2x", *cp++);
265 static void flash_printqry (struct cfi_qry *qry)
270 for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
272 for (y = 0; y < 16; y++)
273 debug("%2.2x ", p[x + y]);
275 for (y = 0; y < 16; y++) {
276 unsigned char c = p[x + y];
277 if (c >= 0x20 && c <= 0x7e)
288 /*-----------------------------------------------------------------------
289 * read a character at a port width address
291 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
296 cp = flash_map (info, 0, offset);
297 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
298 retval = flash_read8(cp);
300 retval = flash_read8(cp + info->portwidth - 1);
302 flash_unmap (info, 0, offset, cp);
306 /*-----------------------------------------------------------------------
307 * read a word at a port width address, assume 16bit bus
309 static inline ushort flash_read_word (flash_info_t * info, uint offset)
311 ushort *addr, retval;
313 addr = flash_map (info, 0, offset);
314 retval = flash_read16 (addr);
315 flash_unmap (info, 0, offset, addr);
320 /*-----------------------------------------------------------------------
321 * read a long word by picking the least significant byte of each maximum
322 * port size word. Swap for ppc format.
324 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
333 addr = flash_map (info, sect, offset);
336 debug ("long addr is at %p info->portwidth = %d\n", addr,
338 for (x = 0; x < 4 * info->portwidth; x++) {
339 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
342 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
343 retval = ((flash_read8(addr) << 16) |
344 (flash_read8(addr + info->portwidth) << 24) |
345 (flash_read8(addr + 2 * info->portwidth)) |
346 (flash_read8(addr + 3 * info->portwidth) << 8));
348 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
349 (flash_read8(addr + info->portwidth - 1) << 16) |
350 (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
351 (flash_read8(addr + 3 * info->portwidth - 1)));
353 flash_unmap(info, sect, offset, addr);
359 * Write a proper sized command to the correct address
361 void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
362 uint offset, u32 cmd)
368 addr = flash_map (info, sect, offset);
369 flash_make_cmd (info, cmd, &cword);
370 switch (info->portwidth) {
372 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
373 cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
374 flash_write8(cword.c, addr);
376 case FLASH_CFI_16BIT:
377 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
379 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
380 flash_write16(cword.w, addr);
382 case FLASH_CFI_32BIT:
383 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
385 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
386 flash_write32(cword.l, addr);
388 case FLASH_CFI_64BIT:
393 print_longlong (str, cword.ll);
395 debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
397 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
400 flash_write64(cword.ll, addr);
404 /* Ensure all the instructions are fully finished */
407 flash_unmap(info, sect, offset, addr);
410 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
412 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
413 flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
416 /*-----------------------------------------------------------------------
418 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
419 uint offset, uchar cmd)
425 addr = flash_map (info, sect, offset);
426 flash_make_cmd (info, cmd, &cword);
428 debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
429 switch (info->portwidth) {
431 debug ("is= %x %x\n", flash_read8(addr), cword.c);
432 retval = (flash_read8(addr) == cword.c);
434 case FLASH_CFI_16BIT:
435 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
436 retval = (flash_read16(addr) == cword.w);
438 case FLASH_CFI_32BIT:
439 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
440 retval = (flash_read32(addr) == cword.l);
442 case FLASH_CFI_64BIT:
448 print_longlong (str1, flash_read64(addr));
449 print_longlong (str2, cword.ll);
450 debug ("is= %s %s\n", str1, str2);
453 retval = (flash_read64(addr) == cword.ll);
459 flash_unmap(info, sect, offset, addr);
464 /*-----------------------------------------------------------------------
466 static int flash_isset (flash_info_t * info, flash_sect_t sect,
467 uint offset, uchar cmd)
473 addr = flash_map (info, sect, offset);
474 flash_make_cmd (info, cmd, &cword);
475 switch (info->portwidth) {
477 retval = ((flash_read8(addr) & cword.c) == cword.c);
479 case FLASH_CFI_16BIT:
480 retval = ((flash_read16(addr) & cword.w) == cword.w);
482 case FLASH_CFI_32BIT:
483 retval = ((flash_read32(addr) & cword.l) == cword.l);
485 case FLASH_CFI_64BIT:
486 retval = ((flash_read64(addr) & cword.ll) == cword.ll);
492 flash_unmap(info, sect, offset, addr);
497 /*-----------------------------------------------------------------------
499 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
500 uint offset, uchar cmd)
506 addr = flash_map (info, sect, offset);
507 flash_make_cmd (info, cmd, &cword);
508 switch (info->portwidth) {
510 retval = flash_read8(addr) != flash_read8(addr);
512 case FLASH_CFI_16BIT:
513 retval = flash_read16(addr) != flash_read16(addr);
515 case FLASH_CFI_32BIT:
516 retval = flash_read32(addr) != flash_read32(addr);
518 case FLASH_CFI_64BIT:
519 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
520 (flash_read32(addr+4) != flash_read32(addr+4)) );
526 flash_unmap(info, sect, offset, addr);
532 * flash_is_busy - check to see if the flash is busy
534 * This routine checks the status of the chip and returns true if the
537 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
541 switch (info->vendor) {
542 case CFI_CMDSET_INTEL_PROG_REGIONS:
543 case CFI_CMDSET_INTEL_STANDARD:
544 case CFI_CMDSET_INTEL_EXTENDED:
545 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
547 case CFI_CMDSET_AMD_STANDARD:
548 case CFI_CMDSET_AMD_EXTENDED:
549 #ifdef CONFIG_FLASH_CFI_LEGACY
550 case CFI_CMDSET_AMD_LEGACY:
552 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
557 debug ("flash_is_busy: %d\n", retval);
561 /*-----------------------------------------------------------------------
562 * wait for XSR.7 to be set. Time out with an error if it does not.
563 * This routine does not set the flash to read-array mode.
565 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
566 ulong tout, char *prompt)
570 #if CONFIG_SYS_HZ != 1000
571 if ((ulong)CONFIG_SYS_HZ > 100000)
572 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
574 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
577 /* Wait for command completion */
578 #ifdef CONFIG_SYS_LOW_RES_TIMER
581 start = get_timer (0);
583 while (flash_is_busy (info, sector)) {
584 if (get_timer (start) > tout) {
585 printf ("Flash %s timeout at address %lx data %lx\n",
586 prompt, info->start[sector],
587 flash_read_long (info, sector, 0));
588 flash_write_cmd (info, sector, 0, info->cmd_reset);
592 udelay (1); /* also triggers watchdog */
597 /*-----------------------------------------------------------------------
598 * Wait for XSR.7 to be set, if it times out print an error, otherwise
599 * do a full status check.
601 * This routine sets the flash to read-array mode.
603 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
604 ulong tout, char *prompt)
608 retcode = flash_status_check (info, sector, tout, prompt);
609 switch (info->vendor) {
610 case CFI_CMDSET_INTEL_PROG_REGIONS:
611 case CFI_CMDSET_INTEL_EXTENDED:
612 case CFI_CMDSET_INTEL_STANDARD:
613 if ((retcode != ERR_OK)
614 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
616 printf ("Flash %s error at address %lx\n", prompt,
617 info->start[sector]);
618 if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
619 FLASH_STATUS_PSLBS)) {
620 puts ("Command Sequence Error.\n");
621 } else if (flash_isset (info, sector, 0,
622 FLASH_STATUS_ECLBS)) {
623 puts ("Block Erase Error.\n");
624 retcode = ERR_NOT_ERASED;
625 } else if (flash_isset (info, sector, 0,
626 FLASH_STATUS_PSLBS)) {
627 puts ("Locking Error\n");
629 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
630 puts ("Block locked.\n");
631 retcode = ERR_PROTECTED;
633 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
634 puts ("Vpp Low Error.\n");
636 flash_write_cmd (info, sector, 0, info->cmd_reset);
645 static int use_flash_status_poll(flash_info_t *info)
647 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
648 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
649 info->vendor == CFI_CMDSET_AMD_STANDARD)
655 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
656 ulong tout, char *prompt)
658 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
662 #if CONFIG_SYS_HZ != 1000
663 if ((ulong)CONFIG_SYS_HZ > 100000)
664 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
666 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
669 /* Wait for command completion */
670 #ifdef CONFIG_SYS_LOW_RES_TIMER
673 start = get_timer(0);
676 switch (info->portwidth) {
678 ready = flash_read8(dst) == flash_read8(src);
680 case FLASH_CFI_16BIT:
681 ready = flash_read16(dst) == flash_read16(src);
683 case FLASH_CFI_32BIT:
684 ready = flash_read32(dst) == flash_read32(src);
686 case FLASH_CFI_64BIT:
687 ready = flash_read64(dst) == flash_read64(src);
695 if (get_timer(start) > tout) {
696 printf("Flash %s timeout at address %lx data %lx\n",
697 prompt, (ulong)dst, (ulong)flash_read8(dst));
700 udelay(1); /* also triggers watchdog */
702 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
706 /*-----------------------------------------------------------------------
708 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
710 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
713 unsigned long long ll;
716 switch (info->portwidth) {
720 case FLASH_CFI_16BIT:
721 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
724 cword->w = (cword->w >> 8) | w;
726 cword->w = (cword->w << 8) | c;
729 case FLASH_CFI_32BIT:
730 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
733 cword->l = (cword->l >> 8) | l;
735 cword->l = (cword->l << 8) | c;
738 case FLASH_CFI_64BIT:
739 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
742 cword->ll = (cword->ll >> 8) | ll;
744 cword->ll = (cword->ll << 8) | c;
751 * Loop through the sector table starting from the previously found sector.
752 * Searches forwards or backwards, dependent on the passed address.
754 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
756 static flash_sect_t saved_sector; /* previously found sector */
757 static flash_info_t *saved_info; /* previously used flash bank */
758 flash_sect_t sector = saved_sector;
760 if ((info != saved_info) || (sector >= info->sector_count))
763 while ((info->start[sector] < addr)
764 && (sector < info->sector_count - 1))
766 while ((info->start[sector] > addr) && (sector > 0))
768 * also decrements the sector in case of an overshot
773 saved_sector = sector;
778 /*-----------------------------------------------------------------------
780 static int flash_write_cfiword (flash_info_t * info, ulong dest,
783 void *dstaddr = (void *)dest;
785 flash_sect_t sect = 0;
788 /* Check if Flash is (sufficiently) erased */
789 switch (info->portwidth) {
791 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
793 case FLASH_CFI_16BIT:
794 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
796 case FLASH_CFI_32BIT:
797 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
799 case FLASH_CFI_64BIT:
800 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
807 return ERR_NOT_ERASED;
809 /* Disable interrupts which might cause a timeout here */
810 flag = disable_interrupts ();
812 switch (info->vendor) {
813 case CFI_CMDSET_INTEL_PROG_REGIONS:
814 case CFI_CMDSET_INTEL_EXTENDED:
815 case CFI_CMDSET_INTEL_STANDARD:
816 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
817 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
819 case CFI_CMDSET_AMD_EXTENDED:
820 case CFI_CMDSET_AMD_STANDARD:
821 sect = find_sector(info, dest);
822 flash_unlock_seq (info, sect);
823 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
826 #ifdef CONFIG_FLASH_CFI_LEGACY
827 case CFI_CMDSET_AMD_LEGACY:
828 sect = find_sector(info, dest);
829 flash_unlock_seq (info, 0);
830 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
836 switch (info->portwidth) {
838 flash_write8(cword.c, dstaddr);
840 case FLASH_CFI_16BIT:
841 flash_write16(cword.w, dstaddr);
843 case FLASH_CFI_32BIT:
844 flash_write32(cword.l, dstaddr);
846 case FLASH_CFI_64BIT:
847 flash_write64(cword.ll, dstaddr);
851 /* re-enable interrupts if necessary */
853 enable_interrupts ();
856 sect = find_sector (info, dest);
858 if (use_flash_status_poll(info))
859 return flash_status_poll(info, &cword, dstaddr,
860 info->write_tout, "write");
862 return flash_full_status_check(info, sect,
863 info->write_tout, "write");
866 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
868 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
875 void *dst = (void *)dest;
882 switch (info->portwidth) {
886 case FLASH_CFI_16BIT:
889 case FLASH_CFI_32BIT:
892 case FLASH_CFI_64BIT:
902 while ((cnt-- > 0) && (flag == 1)) {
903 switch (info->portwidth) {
905 flag = ((flash_read8(dst2) & flash_read8(src)) ==
909 case FLASH_CFI_16BIT:
910 flag = ((flash_read16(dst2) & flash_read16(src)) ==
914 case FLASH_CFI_32BIT:
915 flag = ((flash_read32(dst2) & flash_read32(src)) ==
919 case FLASH_CFI_64BIT:
920 flag = ((flash_read64(dst2) & flash_read64(src)) ==
927 retcode = ERR_NOT_ERASED;
932 sector = find_sector (info, dest);
934 switch (info->vendor) {
935 case CFI_CMDSET_INTEL_PROG_REGIONS:
936 case CFI_CMDSET_INTEL_STANDARD:
937 case CFI_CMDSET_INTEL_EXTENDED:
938 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
939 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
940 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
941 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
942 flash_write_cmd (info, sector, 0, write_cmd);
943 retcode = flash_status_check (info, sector,
944 info->buffer_write_tout,
946 if (retcode == ERR_OK) {
947 /* reduce the number of loops by the width of
950 flash_write_cmd (info, sector, 0, cnt - 1);
952 switch (info->portwidth) {
954 flash_write8(flash_read8(src), dst);
957 case FLASH_CFI_16BIT:
958 flash_write16(flash_read16(src), dst);
961 case FLASH_CFI_32BIT:
962 flash_write32(flash_read32(src), dst);
965 case FLASH_CFI_64BIT:
966 flash_write64(flash_read64(src), dst);
974 flash_write_cmd (info, sector, 0,
975 FLASH_CMD_WRITE_BUFFER_CONFIRM);
976 retcode = flash_full_status_check (
977 info, sector, info->buffer_write_tout,
983 case CFI_CMDSET_AMD_STANDARD:
984 case CFI_CMDSET_AMD_EXTENDED:
985 flash_unlock_seq(info,0);
987 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
988 offset = ((unsigned long)dst - info->start[sector]) >> shift;
990 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
992 flash_write_cmd(info, sector, offset, cnt - 1);
994 switch (info->portwidth) {
997 flash_write8(flash_read8(src), dst);
1001 case FLASH_CFI_16BIT:
1003 flash_write16(flash_read16(src), dst);
1007 case FLASH_CFI_32BIT:
1009 flash_write32(flash_read32(src), dst);
1013 case FLASH_CFI_64BIT:
1015 flash_write64(flash_read64(src), dst);
1020 retcode = ERR_INVAL;
1024 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1025 if (use_flash_status_poll(info))
1026 retcode = flash_status_poll(info, src - (1 << shift),
1028 info->buffer_write_tout,
1031 retcode = flash_full_status_check(info, sector,
1032 info->buffer_write_tout,
1037 debug ("Unknown Command Set\n");
1038 retcode = ERR_INVAL;
1045 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1048 /*-----------------------------------------------------------------------
1050 int flash_erase (flash_info_t * info, int s_first, int s_last)
1057 if (info->flash_id != FLASH_MAN_CFI) {
1058 puts ("Can't erase unknown flash type - aborted\n");
1061 if ((s_first < 0) || (s_first > s_last)) {
1062 puts ("- no sectors to erase\n");
1067 for (sect = s_first; sect <= s_last; ++sect) {
1068 if (info->protect[sect]) {
1073 printf ("- Warning: %d protected sectors will not be erased!\n",
1075 } else if (flash_verbose) {
1080 for (sect = s_first; sect <= s_last; sect++) {
1086 if (info->protect[sect] == 0) { /* not protected */
1087 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1094 * Check if whole sector is erased
1096 size = flash_sector_size(info, sect);
1098 flash = (u32 *)info->start[sect];
1099 /* divide by 4 for longword access */
1101 for (k = 0; k < size; k++) {
1102 if (flash_read32(flash++) != 0xffffffff) {
1113 switch (info->vendor) {
1114 case CFI_CMDSET_INTEL_PROG_REGIONS:
1115 case CFI_CMDSET_INTEL_STANDARD:
1116 case CFI_CMDSET_INTEL_EXTENDED:
1117 flash_write_cmd (info, sect, 0,
1118 FLASH_CMD_CLEAR_STATUS);
1119 flash_write_cmd (info, sect, 0,
1120 FLASH_CMD_BLOCK_ERASE);
1121 flash_write_cmd (info, sect, 0,
1122 FLASH_CMD_ERASE_CONFIRM);
1124 case CFI_CMDSET_AMD_STANDARD:
1125 case CFI_CMDSET_AMD_EXTENDED:
1126 flash_unlock_seq (info, sect);
1127 flash_write_cmd (info, sect,
1129 AMD_CMD_ERASE_START);
1130 flash_unlock_seq (info, sect);
1131 flash_write_cmd (info, sect, 0,
1132 info->cmd_erase_sector);
1134 #ifdef CONFIG_FLASH_CFI_LEGACY
1135 case CFI_CMDSET_AMD_LEGACY:
1136 flash_unlock_seq (info, 0);
1137 flash_write_cmd (info, 0, info->addr_unlock1,
1138 AMD_CMD_ERASE_START);
1139 flash_unlock_seq (info, 0);
1140 flash_write_cmd (info, sect, 0,
1141 AMD_CMD_ERASE_SECTOR);
1145 debug ("Unkown flash vendor %d\n",
1150 if (use_flash_status_poll(info)) {
1153 cword.ll = 0xffffffffffffffffULL;
1154 dest = flash_map(info, sect, 0);
1155 st = flash_status_poll(info, &cword, dest,
1156 info->erase_blk_tout, "erase");
1157 flash_unmap(info, sect, 0, dest);
1159 st = flash_full_status_check(info, sect,
1160 info->erase_blk_tout,
1164 else if (flash_verbose)
1175 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1176 static int sector_erased(flash_info_t *info, int i)
1183 * Check if whole sector is erased
1185 size = flash_sector_size(info, i);
1186 flash = (u32 *)info->start[i];
1187 /* divide by 4 for longword access */
1190 for (k = 0; k < size; k++) {
1191 if (flash_read32(flash++) != 0xffffffff)
1192 return 0; /* not erased */
1195 return 1; /* erased */
1197 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1199 void flash_print_info (flash_info_t * info)
1203 if (info->flash_id != FLASH_MAN_CFI) {
1204 puts ("missing or unknown FLASH type\n");
1208 printf ("%s flash (%d x %d)",
1210 (info->portwidth << 3), (info->chipwidth << 3));
1211 if (info->size < 1024*1024)
1212 printf (" Size: %ld kB in %d Sectors\n",
1213 info->size >> 10, info->sector_count);
1215 printf (" Size: %ld MB in %d Sectors\n",
1216 info->size >> 20, info->sector_count);
1218 switch (info->vendor) {
1219 case CFI_CMDSET_INTEL_PROG_REGIONS:
1220 printf ("Intel Prog Regions");
1222 case CFI_CMDSET_INTEL_STANDARD:
1223 printf ("Intel Standard");
1225 case CFI_CMDSET_INTEL_EXTENDED:
1226 printf ("Intel Extended");
1228 case CFI_CMDSET_AMD_STANDARD:
1229 printf ("AMD Standard");
1231 case CFI_CMDSET_AMD_EXTENDED:
1232 printf ("AMD Extended");
1234 #ifdef CONFIG_FLASH_CFI_LEGACY
1235 case CFI_CMDSET_AMD_LEGACY:
1236 printf ("AMD Legacy");
1240 printf ("Unknown (%d)", info->vendor);
1243 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1244 info->manufacturer_id);
1245 printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1247 if ((info->device_id & 0xff) == 0x7E) {
1248 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1251 if ((info->vendor == CFI_CMDSET_AMD_STANDARD) && (info->legacy_unlock))
1252 printf("\n Advanced Sector Protection (PPB) enabled");
1253 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1254 info->erase_blk_tout,
1256 if (info->buffer_size > 1) {
1257 printf (" Buffer write timeout: %ld ms, "
1258 "buffer size: %d bytes\n",
1259 info->buffer_write_tout,
1263 puts ("\n Sector Start Addresses:");
1264 for (i = 0; i < info->sector_count; ++i) {
1269 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1270 /* print empty and read-only info */
1271 printf (" %08lX %c %s ",
1273 sector_erased(info, i) ? 'E' : ' ',
1274 info->protect[i] ? "RO" : " ");
1275 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1276 printf (" %08lX %s ",
1278 info->protect[i] ? "RO" : " ");
1285 /*-----------------------------------------------------------------------
1286 * This is used in a few places in write_buf() to show programming
1287 * progress. Making it a function is nasty because it needs to do side
1288 * effect updates to digit and dots. Repeated code is nasty too, so
1289 * we define it once here.
1291 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1292 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1293 if (flash_verbose) { \
1295 if ((scale > 0) && (dots <= 0)) { \
1296 if ((digit % 5) == 0) \
1297 printf ("%d", digit / 5); \
1305 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1308 /*-----------------------------------------------------------------------
1309 * Copy memory to flash, returns:
1312 * 2 - Flash not erased
1314 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1321 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1324 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1325 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1330 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1332 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1333 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1334 CONFIG_FLASH_SHOW_PROGRESS);
1338 /* get lower aligned address */
1339 wp = (addr & ~(info->portwidth - 1));
1341 /* handle unaligned start */
1342 if ((aln = addr - wp) != 0) {
1345 for (i = 0; i < aln; ++i)
1346 flash_add_byte (info, &cword, flash_read8(p + i));
1348 for (; (i < info->portwidth) && (cnt > 0); i++) {
1349 flash_add_byte (info, &cword, *src++);
1352 for (; (cnt == 0) && (i < info->portwidth); ++i)
1353 flash_add_byte (info, &cword, flash_read8(p + i));
1355 rc = flash_write_cfiword (info, wp, cword);
1360 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1363 /* handle the aligned part */
1364 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1365 buffered_size = (info->portwidth / info->chipwidth);
1366 buffered_size *= info->buffer_size;
1367 while (cnt >= info->portwidth) {
1368 /* prohibit buffer write when buffer_size is 1 */
1369 if (info->buffer_size == 1) {
1371 for (i = 0; i < info->portwidth; i++)
1372 flash_add_byte (info, &cword, *src++);
1373 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1375 wp += info->portwidth;
1376 cnt -= info->portwidth;
1380 /* write buffer until next buffered_size aligned boundary */
1381 i = buffered_size - (wp % buffered_size);
1384 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1386 i -= i & (info->portwidth - 1);
1390 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1391 /* Only check every once in a while */
1392 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1396 while (cnt >= info->portwidth) {
1398 for (i = 0; i < info->portwidth; i++) {
1399 flash_add_byte (info, &cword, *src++);
1401 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1403 wp += info->portwidth;
1404 cnt -= info->portwidth;
1405 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1406 /* Only check every once in a while */
1407 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1410 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1417 * handle unaligned tail bytes
1421 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1422 flash_add_byte (info, &cword, *src++);
1425 for (; i < info->portwidth; ++i)
1426 flash_add_byte (info, &cword, flash_read8(p + i));
1428 return flash_write_cfiword (info, wp, cword);
1431 static inline int manufact_match(flash_info_t *info, u32 manu)
1433 return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1436 /*-----------------------------------------------------------------------
1438 #ifdef CONFIG_SYS_FLASH_PROTECTION
1440 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1442 if (manufact_match(info, INTEL_MANUFACT)
1443 && info->device_id == NUMONYX_256MBIT) {
1446 * "Numonyx Axcell P33/P30 Specification Update" :)
1448 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1449 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1452 * cmd must come before FLASH_CMD_PROTECT + 20us
1453 * Disable interrupts which might cause a timeout here.
1455 int flag = disable_interrupts();
1459 cmd = FLASH_CMD_PROTECT_SET;
1461 cmd = FLASH_CMD_PROTECT_CLEAR;
1462 flash_write_cmd(info, sector, 0,
1464 flash_write_cmd(info, sector, 0, cmd);
1465 /* re-enable interrupts if necessary */
1467 enable_interrupts();
1474 int flash_real_protect (flash_info_t * info, long sector, int prot)
1478 switch (info->vendor) {
1479 case CFI_CMDSET_INTEL_PROG_REGIONS:
1480 case CFI_CMDSET_INTEL_STANDARD:
1481 case CFI_CMDSET_INTEL_EXTENDED:
1482 if (!cfi_protect_bugfix(info, sector, prot)) {
1483 flash_write_cmd(info, sector, 0,
1484 FLASH_CMD_CLEAR_STATUS);
1485 flash_write_cmd(info, sector, 0,
1488 flash_write_cmd(info, sector, 0,
1489 FLASH_CMD_PROTECT_SET);
1491 flash_write_cmd(info, sector, 0,
1492 FLASH_CMD_PROTECT_CLEAR);
1496 case CFI_CMDSET_AMD_EXTENDED:
1497 case CFI_CMDSET_AMD_STANDARD:
1498 /* U-Boot only checks the first byte */
1499 if (manufact_match(info, ATM_MANUFACT)) {
1501 flash_unlock_seq (info, 0);
1502 flash_write_cmd (info, 0,
1504 ATM_CMD_SOFTLOCK_START);
1505 flash_unlock_seq (info, 0);
1506 flash_write_cmd (info, sector, 0,
1509 flash_write_cmd (info, 0,
1511 AMD_CMD_UNLOCK_START);
1512 if (info->device_id == ATM_ID_BV6416)
1513 flash_write_cmd (info, sector,
1514 0, ATM_CMD_UNLOCK_SECT);
1517 if (info->legacy_unlock) {
1518 int flag = disable_interrupts();
1521 flash_unlock_seq(info, 0);
1522 flash_write_cmd(info, 0, info->addr_unlock1,
1523 AMD_CMD_SET_PPB_ENTRY);
1524 lock_flag = flash_isset(info, sector, 0, 0x01);
1527 flash_write_cmd(info, sector, 0,
1528 AMD_CMD_PPB_LOCK_BC1);
1529 flash_write_cmd(info, sector, 0,
1530 AMD_CMD_PPB_LOCK_BC2);
1532 debug("sector %ld %slocked\n", sector,
1533 lock_flag ? "" : "already ");
1536 debug("unlock %ld\n", sector);
1537 flash_write_cmd(info, 0, 0,
1538 AMD_CMD_PPB_UNLOCK_BC1);
1539 flash_write_cmd(info, 0, 0,
1540 AMD_CMD_PPB_UNLOCK_BC2);
1542 debug("sector %ld %sunlocked\n", sector,
1543 !lock_flag ? "" : "already ");
1546 enable_interrupts();
1548 if (flash_status_check(info, sector,
1549 info->erase_blk_tout,
1550 prot ? "protect" : "unprotect"))
1551 printf("status check error\n");
1553 flash_write_cmd(info, 0, 0,
1554 AMD_CMD_SET_PPB_EXIT_BC1);
1555 flash_write_cmd(info, 0, 0,
1556 AMD_CMD_SET_PPB_EXIT_BC2);
1559 #ifdef CONFIG_FLASH_CFI_LEGACY
1560 case CFI_CMDSET_AMD_LEGACY:
1561 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1562 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1564 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1566 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1571 * Flash needs to be in status register read mode for
1572 * flash_full_status_check() to work correctly
1574 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1576 flash_full_status_check (info, sector, info->erase_blk_tout,
1577 prot ? "protect" : "unprotect")) == 0) {
1579 info->protect[sector] = prot;
1582 * On some of Intel's flash chips (marked via legacy_unlock)
1583 * unprotect unprotects all locking.
1585 if ((prot == 0) && (info->legacy_unlock)) {
1588 for (i = 0; i < info->sector_count; i++) {
1589 if (info->protect[i])
1590 flash_real_protect (info, i, 1);
1597 /*-----------------------------------------------------------------------
1598 * flash_read_user_serial - read the OneTimeProgramming cells
1600 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1607 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1608 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1609 memcpy (dst, src + offset, len);
1610 flash_write_cmd (info, 0, 0, info->cmd_reset);
1612 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1616 * flash_read_factory_serial - read the device Id from the protection area
1618 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1623 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1624 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1625 memcpy (buffer, src + offset, len);
1626 flash_write_cmd (info, 0, 0, info->cmd_reset);
1628 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1631 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1633 /*-----------------------------------------------------------------------
1634 * Reverse the order of the erase regions in the CFI QRY structure.
1635 * This is needed for chips that are either a) correctly detected as
1636 * top-boot, or b) buggy.
1638 static void cfi_reverse_geometry(struct cfi_qry *qry)
1643 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1644 tmp = get_unaligned(&(qry->erase_region_info[i]));
1645 put_unaligned(get_unaligned(&(qry->erase_region_info[j])),
1646 &(qry->erase_region_info[i]));
1647 put_unaligned(tmp, &(qry->erase_region_info[j]));
1651 /*-----------------------------------------------------------------------
1652 * read jedec ids from device and set corresponding fields in info struct
1654 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1657 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1659 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1661 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1662 udelay(1000); /* some flash are slow to respond */
1663 info->manufacturer_id = flash_read_uchar (info,
1664 FLASH_OFFSET_MANUFACTURER_ID);
1665 info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1666 flash_read_word (info, FLASH_OFFSET_DEVICE_ID) :
1667 flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID);
1668 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1671 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1673 info->cmd_reset = FLASH_CMD_RESET;
1675 cmdset_intel_read_jedec_ids(info);
1676 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1678 #ifdef CONFIG_SYS_FLASH_PROTECTION
1679 /* read legacy lock/unlock bit from intel flash */
1680 if (info->ext_addr) {
1681 info->legacy_unlock = flash_read_uchar (info,
1682 info->ext_addr + 5) & 0x08;
1689 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1694 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1695 flash_unlock_seq(info, 0);
1696 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1697 udelay(1000); /* some flash are slow to respond */
1699 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1700 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1701 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1703 manuId = flash_read_uchar (info,
1704 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1706 info->manufacturer_id = manuId;
1708 switch (info->chipwidth){
1709 case FLASH_CFI_8BIT:
1710 info->device_id = flash_read_uchar (info,
1711 FLASH_OFFSET_DEVICE_ID);
1712 if (info->device_id == 0x7E) {
1713 /* AMD 3-byte (expanded) device ids */
1714 info->device_id2 = flash_read_uchar (info,
1715 FLASH_OFFSET_DEVICE_ID2);
1716 info->device_id2 <<= 8;
1717 info->device_id2 |= flash_read_uchar (info,
1718 FLASH_OFFSET_DEVICE_ID3);
1721 case FLASH_CFI_16BIT:
1722 info->device_id = flash_read_word (info,
1723 FLASH_OFFSET_DEVICE_ID);
1724 if ((info->device_id & 0xff) == 0x7E) {
1725 /* AMD 3-byte (expanded) device ids */
1726 info->device_id2 = flash_read_uchar (info,
1727 FLASH_OFFSET_DEVICE_ID2);
1728 info->device_id2 <<= 8;
1729 info->device_id2 |= flash_read_uchar (info,
1730 FLASH_OFFSET_DEVICE_ID3);
1736 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1740 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1742 info->cmd_reset = AMD_CMD_RESET;
1743 info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1745 cmdset_amd_read_jedec_ids(info);
1746 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1748 #ifdef CONFIG_SYS_FLASH_PROTECTION
1749 if (info->ext_addr) {
1750 /* read sector protect/unprotect scheme (at 0x49) */
1751 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1752 info->legacy_unlock = 1;
1759 #ifdef CONFIG_FLASH_CFI_LEGACY
1760 static void flash_read_jedec_ids (flash_info_t * info)
1762 info->manufacturer_id = 0;
1763 info->device_id = 0;
1764 info->device_id2 = 0;
1766 switch (info->vendor) {
1767 case CFI_CMDSET_INTEL_PROG_REGIONS:
1768 case CFI_CMDSET_INTEL_STANDARD:
1769 case CFI_CMDSET_INTEL_EXTENDED:
1770 cmdset_intel_read_jedec_ids(info);
1772 case CFI_CMDSET_AMD_STANDARD:
1773 case CFI_CMDSET_AMD_EXTENDED:
1774 cmdset_amd_read_jedec_ids(info);
1781 /*-----------------------------------------------------------------------
1782 * Call board code to request info about non-CFI flash.
1783 * board_flash_get_legacy needs to fill in at least:
1784 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1786 static int flash_detect_legacy(phys_addr_t base, int banknum)
1788 flash_info_t *info = &flash_info[banknum];
1790 if (board_flash_get_legacy(base, banknum, info)) {
1791 /* board code may have filled info completely. If not, we
1792 use JEDEC ID probing. */
1793 if (!info->vendor) {
1795 CFI_CMDSET_AMD_STANDARD,
1796 CFI_CMDSET_INTEL_STANDARD
1800 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1801 info->vendor = modes[i];
1803 (ulong)map_physmem(base,
1806 if (info->portwidth == FLASH_CFI_8BIT
1807 && info->interface == FLASH_CFI_X8X16) {
1808 info->addr_unlock1 = 0x2AAA;
1809 info->addr_unlock2 = 0x5555;
1811 info->addr_unlock1 = 0x5555;
1812 info->addr_unlock2 = 0x2AAA;
1814 flash_read_jedec_ids(info);
1815 debug("JEDEC PROBE: ID %x %x %x\n",
1816 info->manufacturer_id,
1819 if (jedec_flash_match(info, info->start[0]))
1822 unmap_physmem((void *)info->start[0],
1827 switch(info->vendor) {
1828 case CFI_CMDSET_INTEL_PROG_REGIONS:
1829 case CFI_CMDSET_INTEL_STANDARD:
1830 case CFI_CMDSET_INTEL_EXTENDED:
1831 info->cmd_reset = FLASH_CMD_RESET;
1833 case CFI_CMDSET_AMD_STANDARD:
1834 case CFI_CMDSET_AMD_EXTENDED:
1835 case CFI_CMDSET_AMD_LEGACY:
1836 info->cmd_reset = AMD_CMD_RESET;
1839 info->flash_id = FLASH_MAN_CFI;
1842 return 0; /* use CFI */
1845 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1847 return 0; /* use CFI */
1851 /*-----------------------------------------------------------------------
1852 * detect if flash is compatible with the Common Flash Interface (CFI)
1853 * http://www.jedec.org/download/search/jesd68.pdf
1855 static void flash_read_cfi (flash_info_t *info, void *buf,
1856 unsigned int start, size_t len)
1861 for (i = 0; i < len; i++)
1862 p[i] = flash_read_uchar(info, start + i);
1865 static void __flash_cmd_reset(flash_info_t *info)
1868 * We do not yet know what kind of commandset to use, so we issue
1869 * the reset command in both Intel and AMD variants, in the hope
1870 * that AMD flash roms ignore the Intel command.
1872 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1874 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1876 void flash_cmd_reset(flash_info_t *info)
1877 __attribute__((weak,alias("__flash_cmd_reset")));
1879 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1883 /* Issue FLASH reset command */
1884 flash_cmd_reset(info);
1887 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1889 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1891 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1892 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1893 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1894 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1895 sizeof(struct cfi_qry));
1896 info->interface = le16_to_cpu(qry->interface_desc);
1898 info->cfi_offset = flash_offset_cfi[cfi_offset];
1899 debug ("device interface is %d\n",
1901 debug ("found port %d chip %d ",
1902 info->portwidth, info->chipwidth);
1903 debug ("port %d bits chip %d bits\n",
1904 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1905 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1907 /* calculate command offsets as in the Linux driver */
1908 info->addr_unlock1 = 0x555;
1909 info->addr_unlock2 = 0x2aa;
1912 * modify the unlock address if we are
1913 * in compatibility mode
1915 if ( /* x8/x16 in x8 mode */
1916 ((info->chipwidth == FLASH_CFI_BY8) &&
1917 (info->interface == FLASH_CFI_X8X16)) ||
1918 /* x16/x32 in x16 mode */
1919 ((info->chipwidth == FLASH_CFI_BY16) &&
1920 (info->interface == FLASH_CFI_X16X32)))
1922 info->addr_unlock1 = 0xaaa;
1923 info->addr_unlock2 = 0x555;
1926 info->name = "CFI conformant";
1934 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1936 debug ("flash detect cfi\n");
1938 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1939 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1940 for (info->chipwidth = FLASH_CFI_BY8;
1941 info->chipwidth <= info->portwidth;
1942 info->chipwidth <<= 1)
1943 if (__flash_detect_cfi(info, qry))
1946 debug ("not found\n");
1951 * Manufacturer-specific quirks. Add workarounds for geometry
1952 * reversal, etc. here.
1954 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1956 /* check if flash geometry needs reversal */
1957 if (qry->num_erase_regions > 1) {
1958 /* reverse geometry if top boot part */
1959 if (info->cfi_version < 0x3131) {
1960 /* CFI < 1.1, try to guess from device id */
1961 if ((info->device_id & 0x80) != 0)
1962 cfi_reverse_geometry(qry);
1963 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1964 /* CFI >= 1.1, deduct from top/bottom flag */
1965 /* note: ext_addr is valid since cfi_version > 0 */
1966 cfi_reverse_geometry(qry);
1971 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1973 int reverse_geometry = 0;
1975 /* Check the "top boot" bit in the PRI */
1976 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1977 reverse_geometry = 1;
1979 /* AT49BV6416(T) list the erase regions in the wrong order.
1980 * However, the device ID is identical with the non-broken
1981 * AT49BV642D they differ in the high byte.
1983 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1984 reverse_geometry = !reverse_geometry;
1986 if (reverse_geometry)
1987 cfi_reverse_geometry(qry);
1990 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1992 /* check if flash geometry needs reversal */
1993 if (qry->num_erase_regions > 1) {
1994 /* reverse geometry if top boot part */
1995 if (info->cfi_version < 0x3131) {
1996 /* CFI < 1.1, guess by device id */
1997 if (info->device_id == 0x22CA || /* M29W320DT */
1998 info->device_id == 0x2256 || /* M29W320ET */
1999 info->device_id == 0x22D7) { /* M29W800DT */
2000 cfi_reverse_geometry(qry);
2002 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2003 /* CFI >= 1.1, deduct from top/bottom flag */
2004 /* note: ext_addr is valid since cfi_version > 0 */
2005 cfi_reverse_geometry(qry);
2010 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2013 * SST, for many recent nor parallel flashes, says they are
2014 * CFI-conformant. This is not true, since qry struct.
2015 * reports a std. AMD command set (0x0002), while SST allows to
2016 * erase two different sector sizes for the same memory.
2017 * 64KB sector (SST call it block) needs 0x30 to be erased.
2018 * 4KB sector (SST call it sector) needs 0x50 to be erased.
2019 * Since CFI query detect the 4KB number of sectors, users expects
2020 * a sector granularity of 4KB, and it is here set.
2022 if (info->device_id == 0x5D23 || /* SST39VF3201B */
2023 info->device_id == 0x5C23) { /* SST39VF3202B */
2024 /* set sector granularity to 4KB */
2025 info->cmd_erase_sector=0x50;
2029 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2032 * The M29EW devices seem to report the CFI information wrong
2033 * when it's in 8 bit mode.
2034 * There's an app note from Numonyx on this issue.
2035 * So adjust the buffer size for M29EW while operating in 8-bit mode
2037 if (((qry->max_buf_write_size) > 0x8) &&
2038 (info->device_id == 0x7E) &&
2039 (info->device_id2 == 0x2201 ||
2040 info->device_id2 == 0x2301 ||
2041 info->device_id2 == 0x2801 ||
2042 info->device_id2 == 0x4801)) {
2043 debug("Adjusted buffer size on Numonyx flash"
2044 " M29EW family in 8 bit mode\n");
2045 qry->max_buf_write_size = 0x8;
2050 * The following code cannot be run from FLASH!
2053 ulong flash_get_size (phys_addr_t base, int banknum)
2055 flash_info_t *info = &flash_info[banknum];
2057 flash_sect_t sect_cnt;
2061 uchar num_erase_regions;
2062 int erase_region_size;
2063 int erase_region_count;
2065 unsigned long max_size;
2067 memset(&qry, 0, sizeof(qry));
2070 info->cfi_version = 0;
2071 #ifdef CONFIG_SYS_FLASH_PROTECTION
2072 info->legacy_unlock = 0;
2075 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2077 if (flash_detect_cfi (info, &qry)) {
2078 info->vendor = le16_to_cpu(get_unaligned(&(qry.p_id)));
2079 info->ext_addr = le16_to_cpu(get_unaligned(&(qry.p_adr)));
2080 num_erase_regions = qry.num_erase_regions;
2082 if (info->ext_addr) {
2083 info->cfi_version = (ushort) flash_read_uchar (info,
2084 info->ext_addr + 3) << 8;
2085 info->cfi_version |= (ushort) flash_read_uchar (info,
2086 info->ext_addr + 4);
2090 flash_printqry (&qry);
2093 switch (info->vendor) {
2094 case CFI_CMDSET_INTEL_PROG_REGIONS:
2095 case CFI_CMDSET_INTEL_STANDARD:
2096 case CFI_CMDSET_INTEL_EXTENDED:
2097 cmdset_intel_init(info, &qry);
2099 case CFI_CMDSET_AMD_STANDARD:
2100 case CFI_CMDSET_AMD_EXTENDED:
2101 cmdset_amd_init(info, &qry);
2104 printf("CFI: Unknown command set 0x%x\n",
2107 * Unfortunately, this means we don't know how
2108 * to get the chip back to Read mode. Might
2109 * as well try an Intel-style reset...
2111 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2115 /* Do manufacturer-specific fixups */
2116 switch (info->manufacturer_id) {
2117 case 0x0001: /* AMD */
2118 case 0x0037: /* AMIC */
2119 flash_fixup_amd(info, &qry);
2122 flash_fixup_atmel(info, &qry);
2125 flash_fixup_stm(info, &qry);
2127 case 0x00bf: /* SST */
2128 flash_fixup_sst(info, &qry);
2130 case 0x0089: /* Numonyx */
2131 flash_fixup_num(info, &qry);
2135 debug ("manufacturer is %d\n", info->vendor);
2136 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
2137 debug ("device id is 0x%x\n", info->device_id);
2138 debug ("device id2 is 0x%x\n", info->device_id2);
2139 debug ("cfi version is 0x%04x\n", info->cfi_version);
2141 size_ratio = info->portwidth / info->chipwidth;
2142 /* if the chip is x8/x16 reduce the ratio by half */
2143 if ((info->interface == FLASH_CFI_X8X16)
2144 && (info->chipwidth == FLASH_CFI_BY8)) {
2147 debug ("size_ratio %d port %d bits chip %d bits\n",
2148 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2149 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2150 info->size = 1 << qry.dev_size;
2151 /* multiply the size by the number of chips */
2152 info->size *= size_ratio;
2153 max_size = cfi_flash_bank_size(banknum);
2154 if (max_size && (info->size > max_size)) {
2155 debug("[truncated from %ldMiB]", info->size >> 20);
2156 info->size = max_size;
2158 debug ("found %d erase regions\n", num_erase_regions);
2161 for (i = 0; i < num_erase_regions; i++) {
2162 if (i > NUM_ERASE_REGIONS) {
2163 printf ("%d erase regions found, only %d used\n",
2164 num_erase_regions, NUM_ERASE_REGIONS);
2168 tmp = le32_to_cpu(get_unaligned(
2169 &(qry.erase_region_info[i])));
2170 debug("erase region %u: 0x%08lx\n", i, tmp);
2172 erase_region_count = (tmp & 0xffff) + 1;
2175 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2176 debug ("erase_region_count = %d erase_region_size = %d\n",
2177 erase_region_count, erase_region_size);
2178 for (j = 0; j < erase_region_count; j++) {
2179 if (sector - base >= info->size)
2181 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2182 printf("ERROR: too many flash sectors\n");
2185 info->start[sect_cnt] =
2186 (ulong)map_physmem(sector,
2189 sector += (erase_region_size * size_ratio);
2192 * Only read protection status from
2193 * supported devices (intel...)
2195 switch (info->vendor) {
2196 case CFI_CMDSET_INTEL_PROG_REGIONS:
2197 case CFI_CMDSET_INTEL_EXTENDED:
2198 case CFI_CMDSET_INTEL_STANDARD:
2200 * Set flash to read-id mode. Otherwise
2201 * reading protected status is not
2204 flash_write_cmd(info, sect_cnt, 0,
2206 info->protect[sect_cnt] =
2207 flash_isset (info, sect_cnt,
2208 FLASH_OFFSET_PROTECT,
2209 FLASH_STATUS_PROTECT);
2211 case CFI_CMDSET_AMD_EXTENDED:
2212 case CFI_CMDSET_AMD_STANDARD:
2213 if (!info->legacy_unlock) {
2214 /* default: not protected */
2215 info->protect[sect_cnt] = 0;
2219 /* Read protection (PPB) from sector */
2220 flash_write_cmd(info, 0, 0,
2222 flash_unlock_seq(info, 0);
2223 flash_write_cmd(info, 0,
2226 info->protect[sect_cnt] =
2229 FLASH_OFFSET_PROTECT,
2230 FLASH_STATUS_PROTECT);
2233 /* default: not protected */
2234 info->protect[sect_cnt] = 0;
2241 info->sector_count = sect_cnt;
2242 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2243 tmp = 1 << qry.block_erase_timeout_typ;
2244 info->erase_blk_tout = tmp *
2245 (1 << qry.block_erase_timeout_max);
2246 tmp = (1 << qry.buf_write_timeout_typ) *
2247 (1 << qry.buf_write_timeout_max);
2249 /* round up when converting to ms */
2250 info->buffer_write_tout = (tmp + 999) / 1000;
2251 tmp = (1 << qry.word_write_timeout_typ) *
2252 (1 << qry.word_write_timeout_max);
2253 /* round up when converting to ms */
2254 info->write_tout = (tmp + 999) / 1000;
2255 info->flash_id = FLASH_MAN_CFI;
2256 if ((info->interface == FLASH_CFI_X8X16) &&
2257 (info->chipwidth == FLASH_CFI_BY8)) {
2258 /* XXX - Need to test on x8/x16 in parallel. */
2259 info->portwidth >>= 1;
2262 flash_write_cmd (info, 0, 0, info->cmd_reset);
2265 return (info->size);
2268 #ifdef CONFIG_FLASH_CFI_MTD
2269 void flash_set_verbose(uint v)
2275 static void cfi_flash_set_config_reg(u32 base, u16 val)
2277 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2279 * Only set this config register if really defined
2280 * to a valid value (0xffff is invalid)
2286 * Set configuration register. Data is "encrypted" in the 16 lower
2289 flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2290 flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2293 * Finally issue reset-command to bring device back to
2296 flash_write16(FLASH_CMD_RESET, (void *)base);
2300 /*-----------------------------------------------------------------------
2303 void flash_protect_default(void)
2305 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2310 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2313 /* Monitor protection ON by default */
2314 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2315 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2316 flash_protect(FLAG_PROTECT_SET,
2317 CONFIG_SYS_MONITOR_BASE,
2318 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2319 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2322 /* Environment protection ON by default */
2323 #ifdef CONFIG_ENV_IS_IN_FLASH
2324 flash_protect(FLAG_PROTECT_SET,
2326 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2327 flash_get_info(CONFIG_ENV_ADDR));
2330 /* Redundant environment protection ON by default */
2331 #ifdef CONFIG_ENV_ADDR_REDUND
2332 flash_protect(FLAG_PROTECT_SET,
2333 CONFIG_ENV_ADDR_REDUND,
2334 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2335 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2338 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2339 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2340 debug("autoprotecting from %08lx to %08lx\n",
2341 apl[i].start, apl[i].start + apl[i].size - 1);
2342 flash_protect(FLAG_PROTECT_SET,
2344 apl[i].start + apl[i].size - 1,
2345 flash_get_info(apl[i].start));
2350 unsigned long flash_init (void)
2352 unsigned long size = 0;
2355 #ifdef CONFIG_SYS_FLASH_PROTECTION
2356 /* read environment from EEPROM */
2358 getenv_f("unlock", s, sizeof(s));
2361 /* Init: no FLASHes known */
2362 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2363 flash_info[i].flash_id = FLASH_UNKNOWN;
2365 /* Optionally write flash configuration register */
2366 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2367 cfi_flash_config_reg(i));
2369 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2370 flash_get_size(cfi_flash_bank_addr(i), i);
2371 size += flash_info[i].size;
2372 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2373 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2374 printf ("## Unknown flash on Bank %d "
2375 "- Size = 0x%08lx = %ld MB\n",
2376 i+1, flash_info[i].size,
2377 flash_info[i].size >> 20);
2378 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2380 #ifdef CONFIG_SYS_FLASH_PROTECTION
2381 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2383 * Only the U-Boot image and it's environment
2384 * is protected, all other sectors are
2385 * unprotected (unlocked) if flash hardware
2386 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2387 * and the environment variable "unlock" is
2390 if (flash_info[i].legacy_unlock) {
2394 * Disable legacy_unlock temporarily,
2395 * since flash_real_protect would
2396 * relock all other sectors again
2399 flash_info[i].legacy_unlock = 0;
2402 * Legacy unlocking (e.g. Intel J3) ->
2403 * unlock only one sector. This will
2404 * unlock all sectors.
2406 flash_real_protect (&flash_info[i], 0, 0);
2408 flash_info[i].legacy_unlock = 1;
2411 * Manually mark other sectors as
2412 * unlocked (unprotected)
2414 for (k = 1; k < flash_info[i].sector_count; k++)
2415 flash_info[i].protect[k] = 0;
2418 * No legancy unlocking -> unlock all sectors
2420 flash_protect (FLAG_PROTECT_CLEAR,
2421 flash_info[i].start[0],
2422 flash_info[i].start[0]
2423 + flash_info[i].size - 1,
2427 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2430 flash_protect_default();
2431 #ifdef CONFIG_FLASH_CFI_MTD