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
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* the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
23
* but WITHOUT ANY WARRANTY; without even the implied warranty of
24
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
* GNU General Public License for more details.
27
* You should have received a copy of the GNU General Public License
28
* along with this program; if not, write to the Free Software
29
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34
/* The DEBUG define must be before common to enable debugging */
38
#include <asm/processor.h>
40
#include <asm/byteorder.h>
41
#include <environment.h>
42
#include <mtd/cfi_flash.h>
45
* This file implements a Common Flash Interface (CFI) driver for
48
* The width of the port and the width of the chips are determined at
49
* initialization. These widths are used to calculate the address for
50
* access CFI data structures.
53
* JEDEC Standard JESD68 - Common Flash Interface (CFI)
54
* JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
55
* Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
56
* Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
57
* AMD CFI Specification, Release 2.0 December 1, 2001
58
* AMD/Spansion Application Note: Migration from Single-byte to Three-byte
59
* Device IDs, Publication Number 25538 Revision A, November 8, 2001
61
* Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
62
* reading and writing ... (yes there is such a Hardware).
65
#ifndef CONFIG_SYS_FLASH_BANKS_LIST
66
#define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
69
static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
70
static uint flash_verbose = 1;
72
/* use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined */
73
#ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
74
# define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS_DETECT
76
# define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS
79
flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
82
* Check if chip width is defined. If not, start detecting with 8bit.
84
#ifndef CONFIG_SYS_FLASH_CFI_WIDTH
85
#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
88
static void __flash_write8(u8 value, void *addr)
90
__raw_writeb(value, addr);
93
static void __flash_write16(u16 value, void *addr)
95
__raw_writew(value, addr);
98
static void __flash_write32(u32 value, void *addr)
100
__raw_writel(value, addr);
103
static void __flash_write64(u64 value, void *addr)
105
/* No architectures currently implement __raw_writeq() */
106
*(volatile u64 *)addr = value;
109
static u8 __flash_read8(void *addr)
111
return __raw_readb(addr);
114
static u16 __flash_read16(void *addr)
116
return __raw_readw(addr);
119
static u32 __flash_read32(void *addr)
121
return __raw_readl(addr);
124
static u64 __flash_read64(void *addr)
126
/* No architectures currently implement __raw_readq() */
127
return *(volatile u64 *)addr;
130
#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
131
void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
132
void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
133
void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
134
void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
135
u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
136
u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
137
u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
138
u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
140
#define flash_write8 __flash_write8
141
#define flash_write16 __flash_write16
142
#define flash_write32 __flash_write32
143
#define flash_write64 __flash_write64
144
#define flash_read8 __flash_read8
145
#define flash_read16 __flash_read16
146
#define flash_read32 __flash_read32
147
#define flash_read64 __flash_read64
150
/*-----------------------------------------------------------------------
152
#if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
153
flash_info_t *flash_get_info(ulong base)
156
flash_info_t * info = 0;
158
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
159
info = & flash_info[i];
160
if (info->size && info->start[0] <= base &&
161
base <= info->start[0] + info->size - 1)
165
return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
169
unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
171
if (sect != (info->sector_count - 1))
172
return info->start[sect + 1] - info->start[sect];
174
return info->start[0] + info->size - info->start[sect];
177
/*-----------------------------------------------------------------------
178
* create an address based on the offset and the port width
181
flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
183
unsigned int byte_offset = offset * info->portwidth;
185
return (void *)(info->start[sect] + byte_offset);
188
static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
189
unsigned int offset, void *addr)
193
/*-----------------------------------------------------------------------
194
* make a proper sized command based on the port and chip widths
196
static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
201
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
202
u32 cmd_le = cpu_to_le32(cmd);
205
uchar *cp = (uchar *) cmdbuf;
207
for (i = info->portwidth; i > 0; i--){
208
cword_offset = (info->portwidth-i)%info->chipwidth;
209
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
210
cp_offset = info->portwidth - i;
211
val = *((uchar*)&cmd_le + cword_offset);
214
val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
216
cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
221
/*-----------------------------------------------------------------------
224
static void print_longlong (char *str, unsigned long long data)
230
for (i = 0; i < 8; i++)
231
sprintf (&str[i * 2], "%2.2x", *cp++);
234
static void flash_printqry (struct cfi_qry *qry)
239
for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
241
for (y = 0; y < 16; y++)
242
debug("%2.2x ", p[x + y]);
244
for (y = 0; y < 16; y++) {
245
unsigned char c = p[x + y];
246
if (c >= 0x20 && c <= 0x7e)
257
/*-----------------------------------------------------------------------
258
* read a character at a port width address
260
static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
265
cp = flash_map (info, 0, offset);
266
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
267
retval = flash_read8(cp);
269
retval = flash_read8(cp + info->portwidth - 1);
271
flash_unmap (info, 0, offset, cp);
275
/*-----------------------------------------------------------------------
276
* read a word at a port width address, assume 16bit bus
278
static inline ushort flash_read_word (flash_info_t * info, uint offset)
280
ushort *addr, retval;
282
addr = flash_map (info, 0, offset);
283
retval = flash_read16 (addr);
284
flash_unmap (info, 0, offset, addr);
289
/*-----------------------------------------------------------------------
290
* read a long word by picking the least significant byte of each maximum
291
* port size word. Swap for ppc format.
293
static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
302
addr = flash_map (info, sect, offset);
305
debug ("long addr is at %p info->portwidth = %d\n", addr,
307
for (x = 0; x < 4 * info->portwidth; x++) {
308
debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
311
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
312
retval = ((flash_read8(addr) << 16) |
313
(flash_read8(addr + info->portwidth) << 24) |
314
(flash_read8(addr + 2 * info->portwidth)) |
315
(flash_read8(addr + 3 * info->portwidth) << 8));
317
retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
318
(flash_read8(addr + info->portwidth - 1) << 16) |
319
(flash_read8(addr + 4 * info->portwidth - 1) << 8) |
320
(flash_read8(addr + 3 * info->portwidth - 1)));
322
flash_unmap(info, sect, offset, addr);
328
* Write a proper sized command to the correct address
330
void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
331
uint offset, u32 cmd)
337
addr = flash_map (info, sect, offset);
338
flash_make_cmd (info, cmd, &cword);
339
switch (info->portwidth) {
341
debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
342
cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
343
flash_write8(cword.c, addr);
345
case FLASH_CFI_16BIT:
346
debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
348
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
349
flash_write16(cword.w, addr);
351
case FLASH_CFI_32BIT:
352
debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
354
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
355
flash_write32(cword.l, addr);
357
case FLASH_CFI_64BIT:
362
print_longlong (str, cword.ll);
364
debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
366
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
369
flash_write64(cword.ll, addr);
373
/* Ensure all the instructions are fully finished */
376
flash_unmap(info, sect, offset, addr);
379
static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
381
flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
382
flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
385
/*-----------------------------------------------------------------------
387
static int flash_isequal (flash_info_t * info, flash_sect_t sect,
388
uint offset, uchar cmd)
394
addr = flash_map (info, sect, offset);
395
flash_make_cmd (info, cmd, &cword);
397
debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
398
switch (info->portwidth) {
400
debug ("is= %x %x\n", flash_read8(addr), cword.c);
401
retval = (flash_read8(addr) == cword.c);
403
case FLASH_CFI_16BIT:
404
debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
405
retval = (flash_read16(addr) == cword.w);
407
case FLASH_CFI_32BIT:
408
debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
409
retval = (flash_read32(addr) == cword.l);
411
case FLASH_CFI_64BIT:
417
print_longlong (str1, flash_read64(addr));
418
print_longlong (str2, cword.ll);
419
debug ("is= %s %s\n", str1, str2);
422
retval = (flash_read64(addr) == cword.ll);
428
flash_unmap(info, sect, offset, addr);
433
/*-----------------------------------------------------------------------
435
static int flash_isset (flash_info_t * info, flash_sect_t sect,
436
uint offset, uchar cmd)
442
addr = flash_map (info, sect, offset);
443
flash_make_cmd (info, cmd, &cword);
444
switch (info->portwidth) {
446
retval = ((flash_read8(addr) & cword.c) == cword.c);
448
case FLASH_CFI_16BIT:
449
retval = ((flash_read16(addr) & cword.w) == cword.w);
451
case FLASH_CFI_32BIT:
452
retval = ((flash_read32(addr) & cword.l) == cword.l);
454
case FLASH_CFI_64BIT:
455
retval = ((flash_read64(addr) & cword.ll) == cword.ll);
461
flash_unmap(info, sect, offset, addr);
466
/*-----------------------------------------------------------------------
468
static int flash_toggle (flash_info_t * info, flash_sect_t sect,
469
uint offset, uchar cmd)
475
addr = flash_map (info, sect, offset);
476
flash_make_cmd (info, cmd, &cword);
477
switch (info->portwidth) {
479
retval = flash_read8(addr) != flash_read8(addr);
481
case FLASH_CFI_16BIT:
482
retval = flash_read16(addr) != flash_read16(addr);
484
case FLASH_CFI_32BIT:
485
retval = flash_read32(addr) != flash_read32(addr);
487
case FLASH_CFI_64BIT:
488
retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
489
(flash_read32(addr+4) != flash_read32(addr+4)) );
495
flash_unmap(info, sect, offset, addr);
501
* flash_is_busy - check to see if the flash is busy
503
* This routine checks the status of the chip and returns true if the
506
static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
510
switch (info->vendor) {
511
case CFI_CMDSET_INTEL_PROG_REGIONS:
512
case CFI_CMDSET_INTEL_STANDARD:
513
case CFI_CMDSET_INTEL_EXTENDED:
514
retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
516
case CFI_CMDSET_AMD_STANDARD:
517
case CFI_CMDSET_AMD_EXTENDED:
518
#ifdef CONFIG_FLASH_CFI_LEGACY
519
case CFI_CMDSET_AMD_LEGACY:
521
retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
526
debug ("flash_is_busy: %d\n", retval);
530
/*-----------------------------------------------------------------------
531
* wait for XSR.7 to be set. Time out with an error if it does not.
532
* This routine does not set the flash to read-array mode.
534
static int flash_status_check (flash_info_t * info, flash_sect_t sector,
535
ulong tout, char *prompt)
539
#if CONFIG_SYS_HZ != 1000
540
tout *= CONFIG_SYS_HZ/1000;
543
/* Wait for command completion */
544
start = get_timer (0);
545
while (flash_is_busy (info, sector)) {
546
if (get_timer (start) > tout) {
547
printf ("Flash %s timeout at address %lx data %lx\n",
548
prompt, info->start[sector],
549
flash_read_long (info, sector, 0));
550
flash_write_cmd (info, sector, 0, info->cmd_reset);
553
udelay (1); /* also triggers watchdog */
558
/*-----------------------------------------------------------------------
559
* Wait for XSR.7 to be set, if it times out print an error, otherwise
560
* do a full status check.
562
* This routine sets the flash to read-array mode.
564
static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
565
ulong tout, char *prompt)
569
retcode = flash_status_check (info, sector, tout, prompt);
570
switch (info->vendor) {
571
case CFI_CMDSET_INTEL_PROG_REGIONS:
572
case CFI_CMDSET_INTEL_EXTENDED:
573
case CFI_CMDSET_INTEL_STANDARD:
574
if ((retcode != ERR_OK)
575
&& !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
577
printf ("Flash %s error at address %lx\n", prompt,
578
info->start[sector]);
579
if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
580
FLASH_STATUS_PSLBS)) {
581
puts ("Command Sequence Error.\n");
582
} else if (flash_isset (info, sector, 0,
583
FLASH_STATUS_ECLBS)) {
584
puts ("Block Erase Error.\n");
585
retcode = ERR_NOT_ERASED;
586
} else if (flash_isset (info, sector, 0,
587
FLASH_STATUS_PSLBS)) {
588
puts ("Locking Error\n");
590
if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
591
puts ("Block locked.\n");
592
retcode = ERR_PROTECTED;
594
if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
595
puts ("Vpp Low Error.\n");
597
flash_write_cmd (info, sector, 0, info->cmd_reset);
605
/*-----------------------------------------------------------------------
607
static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
609
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
612
unsigned long long ll;
615
switch (info->portwidth) {
619
case FLASH_CFI_16BIT:
620
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
623
cword->w = (cword->w >> 8) | w;
625
cword->w = (cword->w << 8) | c;
628
case FLASH_CFI_32BIT:
629
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
632
cword->l = (cword->l >> 8) | l;
634
cword->l = (cword->l << 8) | c;
637
case FLASH_CFI_64BIT:
638
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
641
cword->ll = (cword->ll >> 8) | ll;
643
cword->ll = (cword->ll << 8) | c;
650
* Loop through the sector table starting from the previously found sector.
651
* Searches forwards or backwards, dependent on the passed address.
653
static flash_sect_t find_sector (flash_info_t * info, ulong addr)
655
static flash_sect_t saved_sector = 0; /* previously found sector */
656
flash_sect_t sector = saved_sector;
658
while ((info->start[sector] < addr)
659
&& (sector < info->sector_count - 1))
661
while ((info->start[sector] > addr) && (sector > 0))
663
* also decrements the sector in case of an overshot
668
saved_sector = sector;
672
/*-----------------------------------------------------------------------
674
static int flash_write_cfiword (flash_info_t * info, ulong dest,
677
void *dstaddr = (void *)dest;
679
flash_sect_t sect = 0;
682
/* Check if Flash is (sufficiently) erased */
683
switch (info->portwidth) {
685
flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
687
case FLASH_CFI_16BIT:
688
flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
690
case FLASH_CFI_32BIT:
691
flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
693
case FLASH_CFI_64BIT:
694
flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
701
return ERR_NOT_ERASED;
703
/* Disable interrupts which might cause a timeout here */
704
flag = disable_interrupts ();
706
switch (info->vendor) {
707
case CFI_CMDSET_INTEL_PROG_REGIONS:
708
case CFI_CMDSET_INTEL_EXTENDED:
709
case CFI_CMDSET_INTEL_STANDARD:
710
flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
711
flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
713
case CFI_CMDSET_AMD_EXTENDED:
714
case CFI_CMDSET_AMD_STANDARD:
715
sect = find_sector(info, dest);
716
flash_unlock_seq (info, sect);
717
flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
720
#ifdef CONFIG_FLASH_CFI_LEGACY
721
case CFI_CMDSET_AMD_LEGACY:
722
sect = find_sector(info, dest);
723
flash_unlock_seq (info, 0);
724
flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
730
switch (info->portwidth) {
732
flash_write8(cword.c, dstaddr);
734
case FLASH_CFI_16BIT:
735
flash_write16(cword.w, dstaddr);
737
case FLASH_CFI_32BIT:
738
flash_write32(cword.l, dstaddr);
740
case FLASH_CFI_64BIT:
741
flash_write64(cword.ll, dstaddr);
745
/* re-enable interrupts if necessary */
747
enable_interrupts ();
750
sect = find_sector (info, dest);
752
return flash_full_status_check (info, sect, info->write_tout, "write");
755
#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
757
static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
764
void *dst = (void *)dest;
771
switch (info->portwidth) {
775
case FLASH_CFI_16BIT:
778
case FLASH_CFI_32BIT:
781
case FLASH_CFI_64BIT:
791
while ((cnt-- > 0) && (flag == 0)) {
792
switch (info->portwidth) {
794
flag = ((flash_read8(dst2) & flash_read8(src)) ==
798
case FLASH_CFI_16BIT:
799
flag = ((flash_read16(dst2) & flash_read16(src)) ==
803
case FLASH_CFI_32BIT:
804
flag = ((flash_read32(dst2) & flash_read32(src)) ==
808
case FLASH_CFI_64BIT:
809
flag = ((flash_read64(dst2) & flash_read64(src)) ==
816
retcode = ERR_NOT_ERASED;
821
sector = find_sector (info, dest);
823
switch (info->vendor) {
824
case CFI_CMDSET_INTEL_PROG_REGIONS:
825
case CFI_CMDSET_INTEL_STANDARD:
826
case CFI_CMDSET_INTEL_EXTENDED:
827
write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
828
FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
829
flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
830
flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
831
flash_write_cmd (info, sector, 0, write_cmd);
832
retcode = flash_status_check (info, sector,
833
info->buffer_write_tout,
835
if (retcode == ERR_OK) {
836
/* reduce the number of loops by the width of
839
flash_write_cmd (info, sector, 0, cnt - 1);
841
switch (info->portwidth) {
843
flash_write8(flash_read8(src), dst);
846
case FLASH_CFI_16BIT:
847
flash_write16(flash_read16(src), dst);
850
case FLASH_CFI_32BIT:
851
flash_write32(flash_read32(src), dst);
854
case FLASH_CFI_64BIT:
855
flash_write64(flash_read64(src), dst);
863
flash_write_cmd (info, sector, 0,
864
FLASH_CMD_WRITE_BUFFER_CONFIRM);
865
retcode = flash_full_status_check (
866
info, sector, info->buffer_write_tout,
872
case CFI_CMDSET_AMD_STANDARD:
873
case CFI_CMDSET_AMD_EXTENDED:
874
flash_unlock_seq(info,0);
876
#ifdef CONFIG_FLASH_SPANSION_S29WS_N
877
offset = ((unsigned long)dst - info->start[sector]) >> shift;
879
flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
881
flash_write_cmd(info, sector, offset, cnt - 1);
883
switch (info->portwidth) {
886
flash_write8(flash_read8(src), dst);
890
case FLASH_CFI_16BIT:
892
flash_write16(flash_read16(src), dst);
896
case FLASH_CFI_32BIT:
898
flash_write32(flash_read32(src), dst);
902
case FLASH_CFI_64BIT:
904
flash_write64(flash_read64(src), dst);
913
flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
914
retcode = flash_full_status_check (info, sector,
915
info->buffer_write_tout,
920
debug ("Unknown Command Set\n");
928
#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
931
/*-----------------------------------------------------------------------
933
int flash_erase (flash_info_t * info, int s_first, int s_last)
939
if (info->flash_id != FLASH_MAN_CFI) {
940
puts ("Can't erase unknown flash type - aborted\n");
943
if ((s_first < 0) || (s_first > s_last)) {
944
puts ("- no sectors to erase\n");
949
for (sect = s_first; sect <= s_last; ++sect) {
950
if (info->protect[sect]) {
955
printf ("- Warning: %d protected sectors will not be erased!\n",
957
} else if (flash_verbose) {
962
for (sect = s_first; sect <= s_last; sect++) {
963
if (info->protect[sect] == 0) { /* not protected */
964
switch (info->vendor) {
965
case CFI_CMDSET_INTEL_PROG_REGIONS:
966
case CFI_CMDSET_INTEL_STANDARD:
967
case CFI_CMDSET_INTEL_EXTENDED:
968
flash_write_cmd (info, sect, 0,
969
FLASH_CMD_CLEAR_STATUS);
970
flash_write_cmd (info, sect, 0,
971
FLASH_CMD_BLOCK_ERASE);
972
flash_write_cmd (info, sect, 0,
973
FLASH_CMD_ERASE_CONFIRM);
975
case CFI_CMDSET_AMD_STANDARD:
976
case CFI_CMDSET_AMD_EXTENDED:
977
flash_unlock_seq (info, sect);
978
flash_write_cmd (info, sect,
980
AMD_CMD_ERASE_START);
981
flash_unlock_seq (info, sect);
982
flash_write_cmd (info, sect, 0,
983
AMD_CMD_ERASE_SECTOR);
985
#ifdef CONFIG_FLASH_CFI_LEGACY
986
case CFI_CMDSET_AMD_LEGACY:
987
flash_unlock_seq (info, 0);
988
flash_write_cmd (info, 0, info->addr_unlock1,
989
AMD_CMD_ERASE_START);
990
flash_unlock_seq (info, 0);
991
flash_write_cmd (info, sect, 0,
992
AMD_CMD_ERASE_SECTOR);
996
debug ("Unkown flash vendor %d\n",
1001
if (flash_full_status_check
1002
(info, sect, info->erase_blk_tout, "erase")) {
1004
} else if (flash_verbose)
1015
/*-----------------------------------------------------------------------
1017
void flash_print_info (flash_info_t * info)
1021
if (info->flash_id != FLASH_MAN_CFI) {
1022
puts ("missing or unknown FLASH type\n");
1026
printf ("%s FLASH (%d x %d)",
1028
(info->portwidth << 3), (info->chipwidth << 3));
1029
if (info->size < 1024*1024)
1030
printf (" Size: %ld kB in %d Sectors\n",
1031
info->size >> 10, info->sector_count);
1033
printf (" Size: %ld MB in %d Sectors\n",
1034
info->size >> 20, info->sector_count);
1036
switch (info->vendor) {
1037
case CFI_CMDSET_INTEL_PROG_REGIONS:
1038
printf ("Intel Prog Regions");
1040
case CFI_CMDSET_INTEL_STANDARD:
1041
printf ("Intel Standard");
1043
case CFI_CMDSET_INTEL_EXTENDED:
1044
printf ("Intel Extended");
1046
case CFI_CMDSET_AMD_STANDARD:
1047
printf ("AMD Standard");
1049
case CFI_CMDSET_AMD_EXTENDED:
1050
printf ("AMD Extended");
1052
#ifdef CONFIG_FLASH_CFI_LEGACY
1053
case CFI_CMDSET_AMD_LEGACY:
1054
printf ("AMD Legacy");
1058
printf ("Unknown (%d)", info->vendor);
1061
printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1062
info->manufacturer_id, info->device_id);
1063
if (info->device_id == 0x7E) {
1064
printf("%04X", info->device_id2);
1066
printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1067
info->erase_blk_tout,
1069
if (info->buffer_size > 1) {
1070
printf (" Buffer write timeout: %ld ms, "
1071
"buffer size: %d bytes\n",
1072
info->buffer_write_tout,
1076
puts ("\n Sector Start Addresses:");
1077
for (i = 0; i < info->sector_count; ++i) {
1080
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1084
volatile unsigned long *flash;
1087
* Check if whole sector is erased
1089
size = flash_sector_size(info, i);
1091
flash = (volatile unsigned long *) info->start[i];
1092
size = size >> 2; /* divide by 4 for longword access */
1093
for (k = 0; k < size; k++) {
1094
if (*flash++ != 0xffffffff) {
1100
/* print empty and read-only info */
1101
printf (" %08lX %c %s ",
1104
info->protect[i] ? "RO" : " ");
1105
#else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1106
printf (" %08lX %s ",
1108
info->protect[i] ? "RO" : " ");
1115
/*-----------------------------------------------------------------------
1116
* This is used in a few places in write_buf() to show programming
1117
* progress. Making it a function is nasty because it needs to do side
1118
* effect updates to digit and dots. Repeated code is nasty too, so
1119
* we define it once here.
1121
#ifdef CONFIG_FLASH_SHOW_PROGRESS
1122
#define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1123
if (flash_verbose) { \
1125
if ((scale > 0) && (dots <= 0)) { \
1126
if ((digit % 5) == 0) \
1127
printf ("%d", digit / 5); \
1135
#define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1138
/*-----------------------------------------------------------------------
1139
* Copy memory to flash, returns:
1142
* 2 - Flash not erased
1144
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1151
#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1154
#ifdef CONFIG_FLASH_SHOW_PROGRESS
1155
int digit = CONFIG_FLASH_SHOW_PROGRESS;
1160
* Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1162
if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1163
scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1164
CONFIG_FLASH_SHOW_PROGRESS);
1168
/* get lower aligned address */
1169
wp = (addr & ~(info->portwidth - 1));
1171
/* handle unaligned start */
1172
if ((aln = addr - wp) != 0) {
1175
for (i = 0; i < aln; ++i)
1176
flash_add_byte (info, &cword, flash_read8(p + i));
1178
for (; (i < info->portwidth) && (cnt > 0); i++) {
1179
flash_add_byte (info, &cword, *src++);
1182
for (; (cnt == 0) && (i < info->portwidth); ++i)
1183
flash_add_byte (info, &cword, flash_read8(p + i));
1185
rc = flash_write_cfiword (info, wp, cword);
1190
FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1193
/* handle the aligned part */
1194
#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1195
buffered_size = (info->portwidth / info->chipwidth);
1196
buffered_size *= info->buffer_size;
1197
while (cnt >= info->portwidth) {
1198
/* prohibit buffer write when buffer_size is 1 */
1199
if (info->buffer_size == 1) {
1201
for (i = 0; i < info->portwidth; i++)
1202
flash_add_byte (info, &cword, *src++);
1203
if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1205
wp += info->portwidth;
1206
cnt -= info->portwidth;
1210
/* write buffer until next buffered_size aligned boundary */
1211
i = buffered_size - (wp % buffered_size);
1214
if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1216
i -= i & (info->portwidth - 1);
1220
FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1223
while (cnt >= info->portwidth) {
1225
for (i = 0; i < info->portwidth; i++) {
1226
flash_add_byte (info, &cword, *src++);
1228
if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1230
wp += info->portwidth;
1231
cnt -= info->portwidth;
1232
FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1234
#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1241
* handle unaligned tail bytes
1245
for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1246
flash_add_byte (info, &cword, *src++);
1249
for (; i < info->portwidth; ++i)
1250
flash_add_byte (info, &cword, flash_read8(p + i));
1252
return flash_write_cfiword (info, wp, cword);
1255
/*-----------------------------------------------------------------------
1257
#ifdef CONFIG_SYS_FLASH_PROTECTION
1259
int flash_real_protect (flash_info_t * info, long sector, int prot)
1263
switch (info->vendor) {
1264
case CFI_CMDSET_INTEL_PROG_REGIONS:
1265
case CFI_CMDSET_INTEL_STANDARD:
1266
case CFI_CMDSET_INTEL_EXTENDED:
1267
flash_write_cmd (info, sector, 0,
1268
FLASH_CMD_CLEAR_STATUS);
1269
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1271
flash_write_cmd (info, sector, 0,
1272
FLASH_CMD_PROTECT_SET);
1274
flash_write_cmd (info, sector, 0,
1275
FLASH_CMD_PROTECT_CLEAR);
1277
case CFI_CMDSET_AMD_EXTENDED:
1278
case CFI_CMDSET_AMD_STANDARD:
1279
/* U-Boot only checks the first byte */
1280
if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1282
flash_unlock_seq (info, 0);
1283
flash_write_cmd (info, 0,
1285
ATM_CMD_SOFTLOCK_START);
1286
flash_unlock_seq (info, 0);
1287
flash_write_cmd (info, sector, 0,
1290
flash_write_cmd (info, 0,
1292
AMD_CMD_UNLOCK_START);
1293
if (info->device_id == ATM_ID_BV6416)
1294
flash_write_cmd (info, sector,
1295
0, ATM_CMD_UNLOCK_SECT);
1299
#ifdef CONFIG_FLASH_CFI_LEGACY
1300
case CFI_CMDSET_AMD_LEGACY:
1301
flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1302
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1304
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1306
flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1311
flash_full_status_check (info, sector, info->erase_blk_tout,
1312
prot ? "protect" : "unprotect")) == 0) {
1314
info->protect[sector] = prot;
1317
* On some of Intel's flash chips (marked via legacy_unlock)
1318
* unprotect unprotects all locking.
1320
if ((prot == 0) && (info->legacy_unlock)) {
1323
for (i = 0; i < info->sector_count; i++) {
1324
if (info->protect[i])
1325
flash_real_protect (info, i, 1);
1332
/*-----------------------------------------------------------------------
1333
* flash_read_user_serial - read the OneTimeProgramming cells
1335
void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1342
src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1343
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1344
memcpy (dst, src + offset, len);
1345
flash_write_cmd (info, 0, 0, info->cmd_reset);
1346
flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1350
* flash_read_factory_serial - read the device Id from the protection area
1352
void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1357
src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1358
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1359
memcpy (buffer, src + offset, len);
1360
flash_write_cmd (info, 0, 0, info->cmd_reset);
1361
flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1364
#endif /* CONFIG_SYS_FLASH_PROTECTION */
1366
/*-----------------------------------------------------------------------
1367
* Reverse the order of the erase regions in the CFI QRY structure.
1368
* This is needed for chips that are either a) correctly detected as
1369
* top-boot, or b) buggy.
1371
static void cfi_reverse_geometry(struct cfi_qry *qry)
1376
for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1377
tmp = qry->erase_region_info[i];
1378
qry->erase_region_info[i] = qry->erase_region_info[j];
1379
qry->erase_region_info[j] = tmp;
1383
/*-----------------------------------------------------------------------
1384
* read jedec ids from device and set corresponding fields in info struct
1386
* Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1389
static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1391
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1392
flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1393
udelay(1000); /* some flash are slow to respond */
1394
info->manufacturer_id = flash_read_uchar (info,
1395
FLASH_OFFSET_MANUFACTURER_ID);
1396
info->device_id = flash_read_uchar (info,
1397
FLASH_OFFSET_DEVICE_ID);
1398
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1401
static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1403
info->cmd_reset = FLASH_CMD_RESET;
1405
cmdset_intel_read_jedec_ids(info);
1406
flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1408
#ifdef CONFIG_SYS_FLASH_PROTECTION
1409
/* read legacy lock/unlock bit from intel flash */
1410
if (info->ext_addr) {
1411
info->legacy_unlock = flash_read_uchar (info,
1412
info->ext_addr + 5) & 0x08;
1419
static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1424
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1425
flash_unlock_seq(info, 0);
1426
flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1427
udelay(1000); /* some flash are slow to respond */
1429
manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1430
/* JEDEC JEP106Z specifies ID codes up to bank 7 */
1431
while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1433
manuId = flash_read_uchar (info,
1434
bankId | FLASH_OFFSET_MANUFACTURER_ID);
1436
info->manufacturer_id = manuId;
1438
switch (info->chipwidth){
1439
case FLASH_CFI_8BIT:
1440
info->device_id = flash_read_uchar (info,
1441
FLASH_OFFSET_DEVICE_ID);
1442
if (info->device_id == 0x7E) {
1443
/* AMD 3-byte (expanded) device ids */
1444
info->device_id2 = flash_read_uchar (info,
1445
FLASH_OFFSET_DEVICE_ID2);
1446
info->device_id2 <<= 8;
1447
info->device_id2 |= flash_read_uchar (info,
1448
FLASH_OFFSET_DEVICE_ID3);
1451
case FLASH_CFI_16BIT:
1452
info->device_id = flash_read_word (info,
1453
FLASH_OFFSET_DEVICE_ID);
1458
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1461
static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1463
info->cmd_reset = AMD_CMD_RESET;
1465
cmdset_amd_read_jedec_ids(info);
1466
flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1471
#ifdef CONFIG_FLASH_CFI_LEGACY
1472
static void flash_read_jedec_ids (flash_info_t * info)
1474
info->manufacturer_id = 0;
1475
info->device_id = 0;
1476
info->device_id2 = 0;
1478
switch (info->vendor) {
1479
case CFI_CMDSET_INTEL_PROG_REGIONS:
1480
case CFI_CMDSET_INTEL_STANDARD:
1481
case CFI_CMDSET_INTEL_EXTENDED:
1482
cmdset_intel_read_jedec_ids(info);
1484
case CFI_CMDSET_AMD_STANDARD:
1485
case CFI_CMDSET_AMD_EXTENDED:
1486
cmdset_amd_read_jedec_ids(info);
1493
/*-----------------------------------------------------------------------
1494
* Call board code to request info about non-CFI flash.
1495
* board_flash_get_legacy needs to fill in at least:
1496
* info->portwidth, info->chipwidth and info->interface for Jedec probing.
1498
static int flash_detect_legacy(phys_addr_t base, int banknum)
1500
flash_info_t *info = &flash_info[banknum];
1502
if (board_flash_get_legacy(base, banknum, info)) {
1503
/* board code may have filled info completely. If not, we
1504
use JEDEC ID probing. */
1505
if (!info->vendor) {
1507
CFI_CMDSET_AMD_STANDARD,
1508
CFI_CMDSET_INTEL_STANDARD
1512
for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1513
info->vendor = modes[i];
1515
(ulong)map_physmem(base,
1518
if (info->portwidth == FLASH_CFI_8BIT
1519
&& info->interface == FLASH_CFI_X8X16) {
1520
info->addr_unlock1 = 0x2AAA;
1521
info->addr_unlock2 = 0x5555;
1523
info->addr_unlock1 = 0x5555;
1524
info->addr_unlock2 = 0x2AAA;
1526
flash_read_jedec_ids(info);
1527
debug("JEDEC PROBE: ID %x %x %x\n",
1528
info->manufacturer_id,
1531
if (jedec_flash_match(info, info->start[0]))
1534
unmap_physmem((void *)info->start[0],
1539
switch(info->vendor) {
1540
case CFI_CMDSET_INTEL_PROG_REGIONS:
1541
case CFI_CMDSET_INTEL_STANDARD:
1542
case CFI_CMDSET_INTEL_EXTENDED:
1543
info->cmd_reset = FLASH_CMD_RESET;
1545
case CFI_CMDSET_AMD_STANDARD:
1546
case CFI_CMDSET_AMD_EXTENDED:
1547
case CFI_CMDSET_AMD_LEGACY:
1548
info->cmd_reset = AMD_CMD_RESET;
1551
info->flash_id = FLASH_MAN_CFI;
1554
return 0; /* use CFI */
1557
static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1559
return 0; /* use CFI */
1563
/*-----------------------------------------------------------------------
1564
* detect if flash is compatible with the Common Flash Interface (CFI)
1565
* http://www.jedec.org/download/search/jesd68.pdf
1567
static void flash_read_cfi (flash_info_t *info, void *buf,
1568
unsigned int start, size_t len)
1573
for (i = 0; i < len; i++)
1574
p[i] = flash_read_uchar(info, start + i);
1577
void __flash_cmd_reset(flash_info_t *info)
1580
* We do not yet know what kind of commandset to use, so we issue
1581
* the reset command in both Intel and AMD variants, in the hope
1582
* that AMD flash roms ignore the Intel command.
1584
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1585
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1587
void flash_cmd_reset(flash_info_t *info)
1588
__attribute__((weak,alias("__flash_cmd_reset")));
1590
static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1594
/* Issue FLASH reset command */
1595
flash_cmd_reset(info);
1598
cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1600
flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1602
if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1603
&& flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1604
&& flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1605
flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1606
sizeof(struct cfi_qry));
1607
info->interface = le16_to_cpu(qry->interface_desc);
1609
info->cfi_offset = flash_offset_cfi[cfi_offset];
1610
debug ("device interface is %d\n",
1612
debug ("found port %d chip %d ",
1613
info->portwidth, info->chipwidth);
1614
debug ("port %d bits chip %d bits\n",
1615
info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1616
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1618
/* calculate command offsets as in the Linux driver */
1619
info->addr_unlock1 = 0x555;
1620
info->addr_unlock2 = 0x2aa;
1623
* modify the unlock address if we are
1624
* in compatibility mode
1626
if ( /* x8/x16 in x8 mode */
1627
((info->chipwidth == FLASH_CFI_BY8) &&
1628
(info->interface == FLASH_CFI_X8X16)) ||
1629
/* x16/x32 in x16 mode */
1630
((info->chipwidth == FLASH_CFI_BY16) &&
1631
(info->interface == FLASH_CFI_X16X32)))
1633
info->addr_unlock1 = 0xaaa;
1634
info->addr_unlock2 = 0x555;
1637
info->name = "CFI conformant";
1645
static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1647
debug ("flash detect cfi\n");
1649
for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1650
info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1651
for (info->chipwidth = FLASH_CFI_BY8;
1652
info->chipwidth <= info->portwidth;
1653
info->chipwidth <<= 1)
1654
if (__flash_detect_cfi(info, qry))
1657
debug ("not found\n");
1662
* Manufacturer-specific quirks. Add workarounds for geometry
1663
* reversal, etc. here.
1665
static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1667
/* check if flash geometry needs reversal */
1668
if (qry->num_erase_regions > 1) {
1669
/* reverse geometry if top boot part */
1670
if (info->cfi_version < 0x3131) {
1671
/* CFI < 1.1, try to guess from device id */
1672
if ((info->device_id & 0x80) != 0)
1673
cfi_reverse_geometry(qry);
1674
} else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1675
/* CFI >= 1.1, deduct from top/bottom flag */
1676
/* note: ext_addr is valid since cfi_version > 0 */
1677
cfi_reverse_geometry(qry);
1682
static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1684
int reverse_geometry = 0;
1686
/* Check the "top boot" bit in the PRI */
1687
if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1688
reverse_geometry = 1;
1690
/* AT49BV6416(T) list the erase regions in the wrong order.
1691
* However, the device ID is identical with the non-broken
1692
* AT49BV642D they differ in the high byte.
1694
if (info->device_id == 0xd6 || info->device_id == 0xd2)
1695
reverse_geometry = !reverse_geometry;
1697
if (reverse_geometry)
1698
cfi_reverse_geometry(qry);
1701
static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1703
/* check if flash geometry needs reversal */
1704
if (qry->num_erase_regions > 1) {
1705
/* reverse geometry if top boot part */
1706
if (info->cfi_version < 0x3131) {
1707
/* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1708
if (info->device_id == 0x22CA ||
1709
info->device_id == 0x2256) {
1710
cfi_reverse_geometry(qry);
1717
* The following code cannot be run from FLASH!
1720
ulong flash_get_size (phys_addr_t base, int banknum)
1722
flash_info_t *info = &flash_info[banknum];
1724
flash_sect_t sect_cnt;
1728
uchar num_erase_regions;
1729
int erase_region_size;
1730
int erase_region_count;
1733
memset(&qry, 0, sizeof(qry));
1736
info->cfi_version = 0;
1737
#ifdef CONFIG_SYS_FLASH_PROTECTION
1738
info->legacy_unlock = 0;
1741
info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1743
if (flash_detect_cfi (info, &qry)) {
1744
info->vendor = le16_to_cpu(qry.p_id);
1745
info->ext_addr = le16_to_cpu(qry.p_adr);
1746
num_erase_regions = qry.num_erase_regions;
1748
if (info->ext_addr) {
1749
info->cfi_version = (ushort) flash_read_uchar (info,
1750
info->ext_addr + 3) << 8;
1751
info->cfi_version |= (ushort) flash_read_uchar (info,
1752
info->ext_addr + 4);
1756
flash_printqry (&qry);
1759
switch (info->vendor) {
1760
case CFI_CMDSET_INTEL_PROG_REGIONS:
1761
case CFI_CMDSET_INTEL_STANDARD:
1762
case CFI_CMDSET_INTEL_EXTENDED:
1763
cmdset_intel_init(info, &qry);
1765
case CFI_CMDSET_AMD_STANDARD:
1766
case CFI_CMDSET_AMD_EXTENDED:
1767
cmdset_amd_init(info, &qry);
1770
printf("CFI: Unknown command set 0x%x\n",
1773
* Unfortunately, this means we don't know how
1774
* to get the chip back to Read mode. Might
1775
* as well try an Intel-style reset...
1777
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1781
/* Do manufacturer-specific fixups */
1782
switch (info->manufacturer_id) {
1784
flash_fixup_amd(info, &qry);
1787
flash_fixup_atmel(info, &qry);
1790
flash_fixup_stm(info, &qry);
1794
debug ("manufacturer is %d\n", info->vendor);
1795
debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1796
debug ("device id is 0x%x\n", info->device_id);
1797
debug ("device id2 is 0x%x\n", info->device_id2);
1798
debug ("cfi version is 0x%04x\n", info->cfi_version);
1800
size_ratio = info->portwidth / info->chipwidth;
1801
/* if the chip is x8/x16 reduce the ratio by half */
1802
if ((info->interface == FLASH_CFI_X8X16)
1803
&& (info->chipwidth == FLASH_CFI_BY8)) {
1806
debug ("size_ratio %d port %d bits chip %d bits\n",
1807
size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1808
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1809
debug ("found %d erase regions\n", num_erase_regions);
1812
for (i = 0; i < num_erase_regions; i++) {
1813
if (i > NUM_ERASE_REGIONS) {
1814
printf ("%d erase regions found, only %d used\n",
1815
num_erase_regions, NUM_ERASE_REGIONS);
1819
tmp = le32_to_cpu(qry.erase_region_info[i]);
1820
debug("erase region %u: 0x%08lx\n", i, tmp);
1822
erase_region_count = (tmp & 0xffff) + 1;
1825
(tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1826
debug ("erase_region_count = %d erase_region_size = %d\n",
1827
erase_region_count, erase_region_size);
1828
for (j = 0; j < erase_region_count; j++) {
1829
if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1830
printf("ERROR: too many flash sectors\n");
1833
info->start[sect_cnt] =
1834
(ulong)map_physmem(sector,
1837
sector += (erase_region_size * size_ratio);
1840
* Only read protection status from
1841
* supported devices (intel...)
1843
switch (info->vendor) {
1844
case CFI_CMDSET_INTEL_PROG_REGIONS:
1845
case CFI_CMDSET_INTEL_EXTENDED:
1846
case CFI_CMDSET_INTEL_STANDARD:
1847
info->protect[sect_cnt] =
1848
flash_isset (info, sect_cnt,
1849
FLASH_OFFSET_PROTECT,
1850
FLASH_STATUS_PROTECT);
1853
/* default: not protected */
1854
info->protect[sect_cnt] = 0;
1861
info->sector_count = sect_cnt;
1862
info->size = 1 << qry.dev_size;
1863
/* multiply the size by the number of chips */
1864
info->size *= size_ratio;
1865
info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1866
tmp = 1 << qry.block_erase_timeout_typ;
1867
info->erase_blk_tout = tmp *
1868
(1 << qry.block_erase_timeout_max);
1869
tmp = (1 << qry.buf_write_timeout_typ) *
1870
(1 << qry.buf_write_timeout_max);
1872
/* round up when converting to ms */
1873
info->buffer_write_tout = (tmp + 999) / 1000;
1874
tmp = (1 << qry.word_write_timeout_typ) *
1875
(1 << qry.word_write_timeout_max);
1876
/* round up when converting to ms */
1877
info->write_tout = (tmp + 999) / 1000;
1878
info->flash_id = FLASH_MAN_CFI;
1879
if ((info->interface == FLASH_CFI_X8X16) &&
1880
(info->chipwidth == FLASH_CFI_BY8)) {
1881
/* XXX - Need to test on x8/x16 in parallel. */
1882
info->portwidth >>= 1;
1885
flash_write_cmd (info, 0, 0, info->cmd_reset);
1888
return (info->size);
1891
void flash_set_verbose(uint v)
1896
/*-----------------------------------------------------------------------
1898
unsigned long flash_init (void)
1900
unsigned long size = 0;
1902
#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
1906
} apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
1909
#ifdef CONFIG_SYS_FLASH_PROTECTION
1910
/* read environment from EEPROM */
1912
getenv_r ("unlock", s, sizeof(s));
1915
#define BANK_BASE(i) (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])
1917
/* Init: no FLASHes known */
1918
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1919
flash_info[i].flash_id = FLASH_UNKNOWN;
1921
if (!flash_detect_legacy (BANK_BASE(i), i))
1922
flash_get_size (BANK_BASE(i), i);
1923
size += flash_info[i].size;
1924
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1925
#ifndef CONFIG_SYS_FLASH_QUIET_TEST
1926
printf ("## Unknown FLASH on Bank %d "
1927
"- Size = 0x%08lx = %ld MB\n",
1928
i+1, flash_info[i].size,
1929
flash_info[i].size << 20);
1930
#endif /* CONFIG_SYS_FLASH_QUIET_TEST */
1932
#ifdef CONFIG_SYS_FLASH_PROTECTION
1933
else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
1935
* Only the U-Boot image and it's environment
1936
* is protected, all other sectors are
1937
* unprotected (unlocked) if flash hardware
1938
* protection is used (CONFIG_SYS_FLASH_PROTECTION)
1939
* and the environment variable "unlock" is
1942
if (flash_info[i].legacy_unlock) {
1946
* Disable legacy_unlock temporarily,
1947
* since flash_real_protect would
1948
* relock all other sectors again
1951
flash_info[i].legacy_unlock = 0;
1954
* Legacy unlocking (e.g. Intel J3) ->
1955
* unlock only one sector. This will
1956
* unlock all sectors.
1958
flash_real_protect (&flash_info[i], 0, 0);
1960
flash_info[i].legacy_unlock = 1;
1963
* Manually mark other sectors as
1964
* unlocked (unprotected)
1966
for (k = 1; k < flash_info[i].sector_count; k++)
1967
flash_info[i].protect[k] = 0;
1970
* No legancy unlocking -> unlock all sectors
1972
flash_protect (FLAG_PROTECT_CLEAR,
1973
flash_info[i].start[0],
1974
flash_info[i].start[0]
1975
+ flash_info[i].size - 1,
1979
#endif /* CONFIG_SYS_FLASH_PROTECTION */
1982
/* Monitor protection ON by default */
1983
#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
1984
(!defined(CONFIG_MONITOR_IS_IN_RAM))
1985
flash_protect (FLAG_PROTECT_SET,
1986
CONFIG_SYS_MONITOR_BASE,
1987
CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
1988
flash_get_info(CONFIG_SYS_MONITOR_BASE));
1991
/* Environment protection ON by default */
1992
#ifdef CONFIG_ENV_IS_IN_FLASH
1993
flash_protect (FLAG_PROTECT_SET,
1995
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1996
flash_get_info(CONFIG_ENV_ADDR));
1999
/* Redundant environment protection ON by default */
2000
#ifdef CONFIG_ENV_ADDR_REDUND
2001
flash_protect (FLAG_PROTECT_SET,
2002
CONFIG_ENV_ADDR_REDUND,
2003
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2004
flash_get_info(CONFIG_ENV_ADDR_REDUND));
2007
#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2008
for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2009
debug("autoprotecting from %08x to %08x\n",
2010
apl[i].start, apl[i].start + apl[i].size - 1);
2011
flash_protect (FLAG_PROTECT_SET,
2013
apl[i].start + apl[i].size - 1,
2014
flash_get_info(apl[i].start));
2018
#ifdef CONFIG_FLASH_CFI_MTD
added
removed
drivers/mtd/cfi_flash.c
