2 * (C) Copyright 2002-2004
3 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
5 * Copyright (C) 2003 Arabella Software Ltd.
6 * Yuli Barcohen <yuli@arabellasw.com>
12 * Tolunay Orkun <listmember@orkun.us>
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 /* The DEBUG define must be before common to enable debugging */
38 #include <asm/processor.h>
40 #include <asm/byteorder.h>
41 #include <environment.h>
42 #ifdef CFG_FLASH_CFI_DRIVER
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 CFG_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
62 * reading and writing ... (yes there is such a Hardware).
65 #ifndef CFG_FLASH_BANKS_LIST
66 #define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE }
69 #define FLASH_CMD_CFI 0x98
70 #define FLASH_CMD_READ_ID 0x90
71 #define FLASH_CMD_RESET 0xff
72 #define FLASH_CMD_BLOCK_ERASE 0x20
73 #define FLASH_CMD_ERASE_CONFIRM 0xD0
74 #define FLASH_CMD_WRITE 0x40
75 #define FLASH_CMD_PROTECT 0x60
76 #define FLASH_CMD_PROTECT_SET 0x01
77 #define FLASH_CMD_PROTECT_CLEAR 0xD0
78 #define FLASH_CMD_CLEAR_STATUS 0x50
79 #define FLASH_CMD_WRITE_TO_BUFFER 0xE8
80 #define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
82 #define FLASH_STATUS_DONE 0x80
83 #define FLASH_STATUS_ESS 0x40
84 #define FLASH_STATUS_ECLBS 0x20
85 #define FLASH_STATUS_PSLBS 0x10
86 #define FLASH_STATUS_VPENS 0x08
87 #define FLASH_STATUS_PSS 0x04
88 #define FLASH_STATUS_DPS 0x02
89 #define FLASH_STATUS_R 0x01
90 #define FLASH_STATUS_PROTECT 0x01
92 #define AMD_CMD_RESET 0xF0
93 #define AMD_CMD_WRITE 0xA0
94 #define AMD_CMD_ERASE_START 0x80
95 #define AMD_CMD_ERASE_SECTOR 0x30
96 #define AMD_CMD_UNLOCK_START 0xAA
97 #define AMD_CMD_UNLOCK_ACK 0x55
98 #define AMD_CMD_WRITE_TO_BUFFER 0x25
99 #define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29
101 #define AMD_STATUS_TOGGLE 0x40
102 #define AMD_STATUS_ERROR 0x20
104 #define FLASH_OFFSET_MANUFACTURER_ID 0x00
105 #define FLASH_OFFSET_DEVICE_ID 0x01
106 #define FLASH_OFFSET_DEVICE_ID2 0x0E
107 #define FLASH_OFFSET_DEVICE_ID3 0x0F
108 #define FLASH_OFFSET_CFI 0x55
109 #define FLASH_OFFSET_CFI_ALT 0x555
110 #define FLASH_OFFSET_CFI_RESP 0x10
111 #define FLASH_OFFSET_PRIMARY_VENDOR 0x13
112 /* extended query table primary address */
113 #define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
114 #define FLASH_OFFSET_WTOUT 0x1F
115 #define FLASH_OFFSET_WBTOUT 0x20
116 #define FLASH_OFFSET_ETOUT 0x21
117 #define FLASH_OFFSET_CETOUT 0x22
118 #define FLASH_OFFSET_WMAX_TOUT 0x23
119 #define FLASH_OFFSET_WBMAX_TOUT 0x24
120 #define FLASH_OFFSET_EMAX_TOUT 0x25
121 #define FLASH_OFFSET_CEMAX_TOUT 0x26
122 #define FLASH_OFFSET_SIZE 0x27
123 #define FLASH_OFFSET_INTERFACE 0x28
124 #define FLASH_OFFSET_BUFFER_SIZE 0x2A
125 #define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
126 #define FLASH_OFFSET_ERASE_REGIONS 0x2D
127 #define FLASH_OFFSET_PROTECT 0x02
128 #define FLASH_OFFSET_USER_PROTECTION 0x85
129 #define FLASH_OFFSET_INTEL_PROTECTION 0x81
131 #define CFI_CMDSET_NONE 0
132 #define CFI_CMDSET_INTEL_EXTENDED 1
133 #define CFI_CMDSET_AMD_STANDARD 2
134 #define CFI_CMDSET_INTEL_STANDARD 3
135 #define CFI_CMDSET_AMD_EXTENDED 4
136 #define CFI_CMDSET_MITSU_STANDARD 256
137 #define CFI_CMDSET_MITSU_EXTENDED 257
138 #define CFI_CMDSET_SST 258
139 #define CFI_CMDSET_SST_NEW 0x701
141 #ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */
142 # undef FLASH_CMD_RESET
143 # define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */
150 unsigned long long ll
;
153 #define NUM_ERASE_REGIONS 4 /* max. number of erase regions */
156 /* no need to try the other offsets on the mini */
157 static uint flash_offset_cfi
[1] = { 0x5555 };
159 static uint flash_offset_cfi
[3] = {
161 FLASH_OFFSET_CFI_ALT
,
165 /* use CFG_MAX_FLASH_BANKS_DETECT if defined */
166 #ifdef CFG_MAX_FLASH_BANKS_DETECT
167 static ulong bank_base
[CFG_MAX_FLASH_BANKS_DETECT
] = CFG_FLASH_BANKS_LIST
;
168 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS_DETECT
]; /* FLASH chips info */
170 static ulong bank_base
[CFG_MAX_FLASH_BANKS
] = CFG_FLASH_BANKS_LIST
;
171 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* FLASH chips info */
175 * Check if chip width is defined. If not, start detecting with 8bit.
177 #ifndef CFG_FLASH_CFI_WIDTH
178 #define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT
181 typedef unsigned long flash_sect_t
;
183 /* CFI standard query structure */
194 u8 word_write_timeout_typ
;
195 u8 buf_write_timeout_typ
;
196 u8 block_erase_timeout_typ
;
197 u8 chip_erase_timeout_typ
;
198 u8 word_write_timeout_max
;
199 u8 buf_write_timeout_max
;
200 u8 block_erase_timeout_max
;
201 u8 chip_erase_timeout_max
;
204 u16 max_buf_write_size
;
205 u8 num_erase_regions
;
206 u32 erase_region_info
[NUM_ERASE_REGIONS
];
207 } __attribute__((packed
));
213 } __attribute__((packed
));
215 static void flash_write8(u8 value
, void *addr
)
217 __raw_writeb(value
, addr
);
220 static void flash_write16(u16 value
, void *addr
)
222 __raw_writew(value
, addr
);
225 static void flash_write32(u32 value
, void *addr
)
227 __raw_writel(value
, addr
);
230 static void flash_write64(u64 value
, void *addr
)
232 /* No architectures currently implement __raw_writeq() */
233 *(volatile u64
*)addr
= value
;
236 static u8
flash_read8(void *addr
)
238 return __raw_readb(addr
);
241 static u16
flash_read16(void *addr
)
243 return __raw_readw(addr
);
246 static u32
flash_read32(void *addr
)
248 return __raw_readl(addr
);
251 static u64
__flash_read64(void *addr
)
253 /* No architectures currently implement __raw_readq() */
254 return *(volatile u64
*)addr
;
257 u64
flash_read64(void *addr
)__attribute__((weak
, alias("__flash_read64")));
259 /*-----------------------------------------------------------------------
261 #if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
262 static flash_info_t
*flash_get_info(ulong base
)
265 flash_info_t
* info
= 0;
267 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; i
++) {
268 info
= & flash_info
[i
];
269 if (info
->size
&& info
->start
[0] <= base
&&
270 base
<= info
->start
[0] + info
->size
- 1)
274 return i
== CFG_MAX_FLASH_BANKS
? 0 : info
;
278 unsigned long flash_sector_size(flash_info_t
*info
, flash_sect_t sect
)
280 if (sect
!= (info
->sector_count
- 1))
281 return info
->start
[sect
+ 1] - info
->start
[sect
];
283 return info
->start
[0] + info
->size
- info
->start
[sect
];
286 /*-----------------------------------------------------------------------
287 * create an address based on the offset and the port width
290 flash_map (flash_info_t
* info
, flash_sect_t sect
, uint offset
)
292 unsigned int byte_offset
= offset
* info
->portwidth
;
294 return map_physmem(info
->start
[sect
] + byte_offset
,
295 flash_sector_size(info
, sect
) - byte_offset
,
299 static inline void flash_unmap(flash_info_t
*info
, flash_sect_t sect
,
300 unsigned int offset
, void *addr
)
302 unsigned int byte_offset
= offset
* info
->portwidth
;
304 unmap_physmem(addr
, flash_sector_size(info
, sect
) - byte_offset
);
307 /*-----------------------------------------------------------------------
308 * make a proper sized command based on the port and chip widths
310 static void flash_make_cmd (flash_info_t
* info
, uchar cmd
, void *cmdbuf
)
313 uchar
*cp
= (uchar
*) cmdbuf
;
315 #if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
316 for (i
= info
->portwidth
; i
> 0; i
--)
318 for (i
= 1; i
<= info
->portwidth
; i
++)
320 *cp
++ = (i
& (info
->chipwidth
- 1)) ? '\0' : cmd
;
324 /*-----------------------------------------------------------------------
327 static void print_longlong (char *str
, unsigned long long data
)
332 cp
= (unsigned char *) &data
;
333 for (i
= 0; i
< 8; i
++)
334 sprintf (&str
[i
* 2], "%2.2x", *cp
++);
337 static void flash_printqry (struct cfi_qry
*qry
)
342 for (x
= 0; x
< sizeof(struct cfi_qry
); x
+= 16) {
344 for (y
= 0; y
< 16; y
++)
345 debug("%2.2x ", p
[x
+ y
]);
347 for (y
= 0; y
< 16; y
++) {
348 unsigned char c
= p
[x
+ y
];
349 if (c
>= 0x20 && c
<= 0x7e)
360 /*-----------------------------------------------------------------------
361 * read a character at a port width address
363 static inline uchar
flash_read_uchar (flash_info_t
* info
, uint offset
)
368 cp
= flash_map (info
, 0, offset
);
369 #if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
370 retval
= flash_read8(cp
);
372 retval
= flash_read8(cp
+ info
->portwidth
- 1);
374 flash_unmap (info
, 0, offset
, cp
);
378 /*-----------------------------------------------------------------------
379 * read a word at a port width address, assume 16bit bus
381 static inline ushort
flash_read_word (flash_info_t
* info
, uint offset
)
383 ushort
*addr
, retval
;
385 addr
= flash_map (info
, 0, offset
);
386 retval
= flash_read16 (addr
);
387 flash_unmap (info
, 0, offset
, addr
);
392 /*-----------------------------------------------------------------------
393 * read a long word by picking the least significant byte of each maximum
394 * port size word. Swap for ppc format.
396 static ulong
flash_read_long (flash_info_t
* info
, flash_sect_t sect
,
405 addr
= flash_map (info
, sect
, offset
);
408 debug ("long addr is at %p info->portwidth = %d\n", addr
,
410 for (x
= 0; x
< 4 * info
->portwidth
; x
++) {
411 debug ("addr[%x] = 0x%x\n", x
, flash_read8(addr
+ x
));
414 #if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
415 retval
= ((flash_read8(addr
) << 16) |
416 (flash_read8(addr
+ info
->portwidth
) << 24) |
417 (flash_read8(addr
+ 2 * info
->portwidth
)) |
418 (flash_read8(addr
+ 3 * info
->portwidth
) << 8));
420 retval
= ((flash_read8(addr
+ 2 * info
->portwidth
- 1) << 24) |
421 (flash_read8(addr
+ info
->portwidth
- 1) << 16) |
422 (flash_read8(addr
+ 4 * info
->portwidth
- 1) << 8) |
423 (flash_read8(addr
+ 3 * info
->portwidth
- 1)));
425 flash_unmap(info
, sect
, offset
, addr
);
431 * Write a proper sized command to the correct address
433 static void flash_write_cmd (flash_info_t
* info
, flash_sect_t sect
,
434 uint offset
, uchar cmd
)
440 addr
= flash_map (info
, sect
, offset
);
441 flash_make_cmd (info
, cmd
, &cword
);
442 switch (info
->portwidth
) {
444 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr
, cmd
,
445 cword
.c
, info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
446 flash_write8(cword
.c
, addr
);
448 case FLASH_CFI_16BIT
:
449 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr
,
451 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
452 flash_write16(cword
.w
, addr
);
454 case FLASH_CFI_32BIT
:
455 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr
,
457 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
458 flash_write32(cword
.l
, addr
);
460 case FLASH_CFI_64BIT
:
465 print_longlong (str
, cword
.ll
);
467 debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
469 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
472 flash_write64(cword
.ll
, addr
);
476 /* Ensure all the instructions are fully finished */
479 flash_unmap(info
, sect
, offset
, addr
);
482 static void flash_unlock_seq (flash_info_t
* info
, flash_sect_t sect
)
484 flash_write_cmd (info
, sect
, info
->addr_unlock1
, AMD_CMD_UNLOCK_START
);
485 flash_write_cmd (info
, sect
, info
->addr_unlock2
, AMD_CMD_UNLOCK_ACK
);
488 /*-----------------------------------------------------------------------
490 static int flash_isequal (flash_info_t
* info
, flash_sect_t sect
,
491 uint offset
, uchar cmd
)
497 addr
= flash_map (info
, sect
, offset
);
498 flash_make_cmd (info
, cmd
, &cword
);
500 debug ("is= cmd %x(%c) addr %p ", cmd
, cmd
, addr
);
501 switch (info
->portwidth
) {
503 debug ("is= %x %x\n", flash_read8(addr
), cword
.c
);
504 retval
= (flash_read8(addr
) == cword
.c
);
506 case FLASH_CFI_16BIT
:
507 debug ("is= %4.4x %4.4x\n", flash_read16(addr
), cword
.w
);
508 retval
= (flash_read16(addr
) == cword
.w
);
510 case FLASH_CFI_32BIT
:
511 debug ("is= %8.8lx %8.8lx\n", flash_read32(addr
), cword
.l
);
512 retval
= (flash_read32(addr
) == cword
.l
);
514 case FLASH_CFI_64BIT
:
520 print_longlong (str1
, flash_read64(addr
));
521 print_longlong (str2
, cword
.ll
);
522 debug ("is= %s %s\n", str1
, str2
);
525 retval
= (flash_read64(addr
) == cword
.ll
);
531 flash_unmap(info
, sect
, offset
, addr
);
536 /*-----------------------------------------------------------------------
538 static int flash_isset (flash_info_t
* info
, flash_sect_t sect
,
539 uint offset
, uchar cmd
)
545 addr
= flash_map (info
, sect
, offset
);
546 flash_make_cmd (info
, cmd
, &cword
);
547 switch (info
->portwidth
) {
549 retval
= ((flash_read8(addr
) & cword
.c
) == cword
.c
);
551 case FLASH_CFI_16BIT
:
552 retval
= ((flash_read16(addr
) & cword
.w
) == cword
.w
);
554 case FLASH_CFI_32BIT
:
555 retval
= ((flash_read32(addr
) & cword
.l
) == cword
.l
);
557 case FLASH_CFI_64BIT
:
558 retval
= ((flash_read64(addr
) & cword
.ll
) == cword
.ll
);
564 flash_unmap(info
, sect
, offset
, addr
);
569 /*-----------------------------------------------------------------------
571 static int flash_toggle (flash_info_t
* info
, flash_sect_t sect
,
572 uint offset
, uchar cmd
)
578 addr
= flash_map (info
, sect
, offset
);
579 flash_make_cmd (info
, cmd
, &cword
);
580 switch (info
->portwidth
) {
582 retval
= ((flash_read8(addr
) & cword
.c
) !=
583 (flash_read8(addr
) & cword
.c
));
585 case FLASH_CFI_16BIT
:
586 retval
= ((flash_read16(addr
) & cword
.w
) !=
587 (flash_read16(addr
) & cword
.w
));
589 case FLASH_CFI_32BIT
:
590 retval
= ((flash_read32(addr
) & cword
.l
) !=
591 (flash_read32(addr
) & cword
.l
));
593 case FLASH_CFI_64BIT
:
594 retval
= ((flash_read64(addr
) & cword
.ll
) !=
595 (flash_read64(addr
) & cword
.ll
));
601 flash_unmap(info
, sect
, offset
, addr
);
607 * flash_is_busy - check to see if the flash is busy
609 * This routine checks the status of the chip and returns true if the
612 static int flash_is_busy (flash_info_t
* info
, flash_sect_t sect
)
616 switch (info
->vendor
) {
617 case CFI_CMDSET_INTEL_STANDARD
:
618 case CFI_CMDSET_INTEL_EXTENDED
:
619 retval
= !flash_isset (info
, sect
, 0, FLASH_STATUS_DONE
);
621 case CFI_CMDSET_AMD_STANDARD
:
622 case CFI_CMDSET_AMD_EXTENDED
:
623 case CFI_CMDSET_SST_NEW
:
624 #ifdef CONFIG_FLASH_CFI_LEGACY
625 case CFI_CMDSET_AMD_LEGACY
:
627 retval
= flash_toggle (info
, sect
, 0, AMD_STATUS_TOGGLE
);
632 debug ("flash_is_busy: %d\n", retval
);
636 /*-----------------------------------------------------------------------
637 * wait for XSR.7 to be set. Time out with an error if it does not.
638 * This routine does not set the flash to read-array mode.
640 static int flash_status_check (flash_info_t
* info
, flash_sect_t sector
,
641 ulong tout
, char *prompt
)
649 /* Wait for command completion */
650 start
= get_timer (0);
651 while (flash_is_busy (info
, sector
)) {
652 if (get_timer (start
) > tout
) {
653 printf ("Flash %s timeout at address %lx data %lx\n",
654 prompt
, info
->start
[sector
],
655 flash_read_long (info
, sector
, 0));
656 flash_write_cmd (info
, sector
, 0, info
->cmd_reset
);
659 udelay (1); /* also triggers watchdog */
664 /*-----------------------------------------------------------------------
665 * Wait for XSR.7 to be set, if it times out print an error, otherwise
666 * do a full status check.
668 * This routine sets the flash to read-array mode.
670 static int flash_full_status_check (flash_info_t
* info
, flash_sect_t sector
,
671 ulong tout
, char *prompt
)
675 retcode
= flash_status_check (info
, sector
, tout
, prompt
);
676 switch (info
->vendor
) {
677 case CFI_CMDSET_INTEL_EXTENDED
:
678 case CFI_CMDSET_INTEL_STANDARD
:
679 if ((retcode
== ERR_OK
)
680 && !flash_isequal (info
, sector
, 0, FLASH_STATUS_DONE
)) {
682 printf ("Flash %s error at address %lx\n", prompt
,
683 info
->start
[sector
]);
684 if (flash_isset (info
, sector
, 0, FLASH_STATUS_ECLBS
|
685 FLASH_STATUS_PSLBS
)) {
686 puts ("Command Sequence Error.\n");
687 } else if (flash_isset (info
, sector
, 0,
688 FLASH_STATUS_ECLBS
)) {
689 puts ("Block Erase Error.\n");
690 retcode
= ERR_NOT_ERASED
;
691 } else if (flash_isset (info
, sector
, 0,
692 FLASH_STATUS_PSLBS
)) {
693 puts ("Locking Error\n");
695 if (flash_isset (info
, sector
, 0, FLASH_STATUS_DPS
)) {
696 puts ("Block locked.\n");
697 retcode
= ERR_PROTECTED
;
699 if (flash_isset (info
, sector
, 0, FLASH_STATUS_VPENS
))
700 puts ("Vpp Low Error.\n");
702 flash_write_cmd (info
, sector
, 0, info
->cmd_reset
);
710 /*-----------------------------------------------------------------------
712 static void flash_add_byte (flash_info_t
* info
, cfiword_t
* cword
, uchar c
)
714 #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
717 unsigned long long ll
;
720 switch (info
->portwidth
) {
724 case FLASH_CFI_16BIT
:
725 #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
728 cword
->w
= (cword
->w
>> 8) | w
;
730 cword
->w
= (cword
->w
<< 8) | c
;
733 case FLASH_CFI_32BIT
:
734 #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
737 cword
->l
= (cword
->l
>> 8) | l
;
739 cword
->l
= (cword
->l
<< 8) | c
;
742 case FLASH_CFI_64BIT
:
743 #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
746 cword
->ll
= (cword
->ll
>> 8) | ll
;
748 cword
->ll
= (cword
->ll
<< 8) | c
;
754 /* loop through the sectors from the highest address when the passed
755 * address is greater or equal to the sector address we have a match
757 static flash_sect_t
find_sector (flash_info_t
* info
, ulong addr
)
761 for (sector
= info
->sector_count
- 1; sector
>= 0; sector
--) {
762 if (addr
>= info
->start
[sector
])
768 /*-----------------------------------------------------------------------
770 static int flash_write_cfiword (flash_info_t
* info
, ulong dest
,
776 dstaddr
= map_physmem(dest
, info
->portwidth
, MAP_NOCACHE
);
778 /* Check if Flash is (sufficiently) erased */
779 switch (info
->portwidth
) {
781 flag
= ((flash_read8(dstaddr
) & cword
.c
) == cword
.c
);
783 case FLASH_CFI_16BIT
:
784 flag
= ((flash_read16(dstaddr
) & cword
.w
) == cword
.w
);
786 case FLASH_CFI_32BIT
:
787 flag
= ((flash_read32(dstaddr
) & cword
.l
) == cword
.l
);
789 case FLASH_CFI_64BIT
:
790 flag
= ((flash_read64(dstaddr
) & cword
.ll
) == cword
.ll
);
797 unmap_physmem(dstaddr
, info
->portwidth
);
798 return ERR_NOT_ERASED
;
801 /* Disable interrupts which might cause a timeout here */
802 flag
= disable_interrupts ();
804 switch (info
->vendor
) {
805 case CFI_CMDSET_INTEL_EXTENDED
:
806 case CFI_CMDSET_INTEL_STANDARD
:
807 flash_write_cmd (info
, 0, 0, FLASH_CMD_CLEAR_STATUS
);
808 flash_write_cmd (info
, 0, 0, FLASH_CMD_WRITE
);
810 case CFI_CMDSET_AMD_EXTENDED
:
811 case CFI_CMDSET_AMD_STANDARD
:
812 case CFI_CMDSET_SST_NEW
:
813 #ifdef CONFIG_FLASH_CFI_LEGACY
814 case CFI_CMDSET_AMD_LEGACY
:
816 flash_unlock_seq (info
, 0);
817 flash_write_cmd (info
, 0, info
->addr_unlock1
, AMD_CMD_WRITE
);
821 switch (info
->portwidth
) {
823 flash_write8(cword
.c
, dstaddr
);
825 case FLASH_CFI_16BIT
:
826 flash_write16(cword
.w
, dstaddr
);
828 case FLASH_CFI_32BIT
:
829 flash_write32(cword
.l
, dstaddr
);
831 case FLASH_CFI_64BIT
:
832 flash_write64(cword
.ll
, dstaddr
);
836 /* re-enable interrupts if necessary */
838 enable_interrupts ();
840 unmap_physmem(dstaddr
, info
->portwidth
);
842 return flash_full_status_check (info
, find_sector (info
, dest
),
843 info
->write_tout
, "write");
846 #ifdef CFG_FLASH_USE_BUFFER_WRITE
848 static int flash_write_cfibuffer (flash_info_t
* info
, ulong dest
, uchar
* cp
,
855 void *dst
= map_physmem(dest
, len
, MAP_NOCACHE
);
859 switch (info
->portwidth
) {
863 case FLASH_CFI_16BIT
:
866 case FLASH_CFI_32BIT
:
869 case FLASH_CFI_64BIT
:
877 while ((cnt
-- > 0) && (flag
== 0)) {
878 switch (info
->portwidth
) {
880 flag
= ((flash_read8(dst2
) & flash_read8(src
)) ==
884 case FLASH_CFI_16BIT
:
885 flag
= ((flash_read16(dst2
) & flash_read16(src
)) ==
889 case FLASH_CFI_32BIT
:
890 flag
= ((flash_read32(dst2
) & flash_read32(src
)) ==
894 case FLASH_CFI_64BIT
:
895 flag
= ((flash_read64(dst2
) & flash_read64(src
)) ==
902 retcode
= ERR_NOT_ERASED
;
907 sector
= find_sector (info
, dest
);
909 switch (info
->vendor
) {
910 case CFI_CMDSET_INTEL_STANDARD
:
911 case CFI_CMDSET_INTEL_EXTENDED
:
912 flash_write_cmd (info
, sector
, 0, FLASH_CMD_CLEAR_STATUS
);
913 flash_write_cmd (info
, sector
, 0, FLASH_CMD_WRITE_TO_BUFFER
);
914 retcode
= flash_status_check (info
, sector
,
915 info
->buffer_write_tout
,
917 if (retcode
== ERR_OK
) {
918 /* reduce the number of loops by the width of
920 switch (info
->portwidth
) {
924 case FLASH_CFI_16BIT
:
927 case FLASH_CFI_32BIT
:
930 case FLASH_CFI_64BIT
:
937 flash_write_cmd (info
, sector
, 0, (uchar
) cnt
- 1);
939 switch (info
->portwidth
) {
941 flash_write8(flash_read8(src
), dst
);
944 case FLASH_CFI_16BIT
:
945 flash_write16(flash_read16(src
), dst
);
948 case FLASH_CFI_32BIT
:
949 flash_write32(flash_read32(src
), dst
);
952 case FLASH_CFI_64BIT
:
953 flash_write64(flash_read64(src
), dst
);
961 flash_write_cmd (info
, sector
, 0,
962 FLASH_CMD_WRITE_BUFFER_CONFIRM
);
963 retcode
= flash_full_status_check (
964 info
, sector
, info
->buffer_write_tout
,
970 case CFI_CMDSET_AMD_STANDARD
:
971 case CFI_CMDSET_AMD_EXTENDED
:
972 case CFI_CMDSET_SST_NEW
:
973 flash_unlock_seq(info
,0);
974 flash_write_cmd (info
, sector
, 0, AMD_CMD_WRITE_TO_BUFFER
);
976 switch (info
->portwidth
) {
979 flash_write_cmd (info
, sector
, 0, (uchar
) cnt
- 1);
981 flash_write8(flash_read8(src
), dst
);
985 case FLASH_CFI_16BIT
:
987 flash_write_cmd (info
, sector
, 0, (uchar
) cnt
- 1);
989 flash_write16(flash_read16(src
), dst
);
993 case FLASH_CFI_32BIT
:
995 flash_write_cmd (info
, sector
, 0, (uchar
) cnt
- 1);
997 flash_write32(flash_read32(src
), dst
);
1001 case FLASH_CFI_64BIT
:
1003 flash_write_cmd (info
, sector
, 0, (uchar
) cnt
- 1);
1005 flash_write64(flash_read64(src
), dst
);
1010 retcode
= ERR_INVAL
;
1014 flash_write_cmd (info
, sector
, 0, AMD_CMD_WRITE_BUFFER_CONFIRM
);
1015 retcode
= flash_full_status_check (info
, sector
,
1016 info
->buffer_write_tout
,
1021 debug ("Unknown Command Set\n");
1022 retcode
= ERR_INVAL
;
1027 unmap_physmem(dst
, len
);
1030 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
1033 /*-----------------------------------------------------------------------
1035 int flash_erase (flash_info_t
* info
, int s_first
, int s_last
)
1041 if (info
->flash_id
!= FLASH_MAN_CFI
) {
1042 puts ("Can't erase unknown flash type - aborted\n");
1045 if ((s_first
< 0) || (s_first
> s_last
)) {
1046 puts ("- no sectors to erase\n");
1051 for (sect
= s_first
; sect
<= s_last
; ++sect
) {
1052 if (info
->protect
[sect
]) {
1057 printf ("- Warning: %d protected sectors will not be erased!\n",
1064 for (sect
= s_first
; sect
<= s_last
; sect
++) {
1065 if (info
->protect
[sect
] == 0) { /* not protected */
1066 switch (info
->vendor
) {
1067 case CFI_CMDSET_INTEL_STANDARD
:
1068 case CFI_CMDSET_INTEL_EXTENDED
:
1069 flash_write_cmd (info
, sect
, 0,
1070 FLASH_CMD_CLEAR_STATUS
);
1071 flash_write_cmd (info
, sect
, 0,
1072 FLASH_CMD_BLOCK_ERASE
);
1073 flash_write_cmd (info
, sect
, 0,
1074 FLASH_CMD_ERASE_CONFIRM
);
1076 case CFI_CMDSET_AMD_STANDARD
:
1077 case CFI_CMDSET_AMD_EXTENDED
:
1078 flash_unlock_seq (info
, sect
);
1079 flash_write_cmd (info
, sect
,
1081 AMD_CMD_ERASE_START
);
1082 flash_unlock_seq (info
, sect
);
1083 flash_write_cmd (info
, sect
, 0,
1084 AMD_CMD_ERASE_SECTOR
);
1086 case CFI_CMDSET_SST_NEW
:
1087 flash_unlock_seq (info
, 0);
1088 flash_write_cmd (info
, 0,
1090 AMD_CMD_ERASE_START
);
1091 flash_unlock_seq (info
, 0);
1092 flash_write_cmd (info
, sect
, 0,
1093 AMD_CMD_ERASE_SECTOR
);
1095 #ifdef CONFIG_FLASH_CFI_LEGACY
1096 case CFI_CMDSET_AMD_LEGACY
:
1097 flash_unlock_seq (info
, 0);
1098 flash_write_cmd (info
, 0, info
->addr_unlock1
,
1099 AMD_CMD_ERASE_START
);
1100 flash_unlock_seq (info
, 0);
1101 flash_write_cmd (info
, sect
, 0,
1102 AMD_CMD_ERASE_SECTOR
);
1106 debug ("Unkown flash vendor %d\n",
1111 if (flash_full_status_check
1112 (info
, sect
, info
->erase_blk_tout
, "erase")) {
1122 static int _flash_is_sector_erased(flash_info_t
* info
, int i
)
1127 volatile unsigned long *flash
;
1130 * Check if whole sector is erased
1132 size
= flash_sector_size(info
, i
);
1134 flash
= (volatile unsigned long *) info
->start
[i
];
1135 size
= size
>> 2; /* divide by 4 for longword access */
1136 for (k
= 0; k
< size
; k
++) {
1137 if (*flash
++ != 0xffffffff) {
1145 /*-----------------------------------------------------------------------
1147 void flash_print_info (flash_info_t
* info
)
1151 if (info
->flash_id
!= FLASH_MAN_CFI
) {
1152 puts ("missing or unknown FLASH type\n");
1156 printf ("%s FLASH (%d x %d)",
1158 (info
->portwidth
<< 3), (info
->chipwidth
<< 3));
1159 if (info
->size
< 1024*1024)
1160 printf (" Size: %ld kB in %d Sectors\n",
1161 info
->size
>> 10, info
->sector_count
);
1163 printf (" Size: %ld MB in %d Sectors\n",
1164 info
->size
>> 20, info
->sector_count
);
1166 switch (info
->vendor
) {
1167 case CFI_CMDSET_INTEL_STANDARD
:
1168 printf ("Intel Standard");
1170 case CFI_CMDSET_INTEL_EXTENDED
:
1171 printf ("Intel Extended");
1173 case CFI_CMDSET_AMD_STANDARD
:
1174 printf ("AMD Standard");
1176 case CFI_CMDSET_AMD_EXTENDED
:
1177 printf ("AMD Extended");
1179 case CFI_CMDSET_SST_NEW
:
1182 #ifdef CONFIG_FLASH_CFI_LEGACY
1183 case CFI_CMDSET_AMD_LEGACY
:
1184 printf ("AMD Legacy");
1188 printf ("Unknown (%d)", info
->vendor
);
1191 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1192 info
->manufacturer_id
, info
->device_id
);
1193 if (info
->device_id
== 0x7E) {
1194 printf("%04X", info
->device_id2
);
1196 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1197 info
->erase_blk_tout
,
1199 if (info
->buffer_size
> 1) {
1200 printf (" Buffer write timeout: %ld ms, "
1201 "buffer size: %d bytes\n",
1202 info
->buffer_write_tout
,
1206 if (info
->sector_count
<= 64) {
1207 puts ("\n Sector Start Addresses:");
1208 for (i
= 0; i
< info
->sector_count
; ++i
) {
1211 #ifdef CFG_FLASH_EMPTY_INFO
1213 /* print empty and read-only info */
1214 printf (" %08lX %c %s ",
1216 _flash_is_sector_erased(info
, i
) ? 'E' : ' ',
1217 info
->protect
[i
] ? "RO" : " ");
1218 #else /* ! CFG_FLASH_EMPTY_INFO */
1219 printf (" %08lX %s ",
1221 info
->protect
[i
] ? "RO" : " ");
1226 puts ("\n Sector Start Addresses:\n");
1227 for (i
= 0; i
< info
->sector_count
; ++i
) {
1229 printf (" %08x: ", info
->start
[i
]);
1231 _flash_is_sector_erased(info
, i
) ?
1232 info
->protect
[i
] ? "E" : "e" :
1233 info
->protect
[i
] ? "*" : "." );
1242 /*-----------------------------------------------------------------------
1243 * This is used in a few places in write_buf() to show programming
1244 * progress. Making it a function is nasty because it needs to do side
1245 * effect updates to digit and dots. Repeated code is nasty too, so
1246 * we define it once here.
1248 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1249 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1251 if ((scale > 0) && (dots <= 0)) { \
1252 if ((digit % 5) == 0) \
1253 printf ("%d", digit / 5); \
1260 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1263 /*-----------------------------------------------------------------------
1264 * Copy memory to flash, returns:
1267 * 2 - Flash not erased
1269 int write_buff (flash_info_t
* info
, uchar
* src
, ulong addr
, ulong cnt
)
1276 #ifdef CFG_FLASH_USE_BUFFER_WRITE
1279 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1280 int digit
= CONFIG_FLASH_SHOW_PROGRESS
;
1285 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1287 if (cnt
>= CONFIG_FLASH_SHOW_PROGRESS
) {
1288 scale
= (int)((cnt
+ CONFIG_FLASH_SHOW_PROGRESS
- 1) /
1289 CONFIG_FLASH_SHOW_PROGRESS
);
1293 /* get lower aligned address */
1294 wp
= (addr
& ~(info
->portwidth
- 1));
1296 /* handle unaligned start */
1297 if ((aln
= addr
- wp
) != 0) {
1299 p
= map_physmem(wp
, info
->portwidth
, MAP_NOCACHE
);
1300 for (i
= 0; i
< aln
; ++i
)
1301 flash_add_byte (info
, &cword
, flash_read8(p
+ i
));
1303 for (; (i
< info
->portwidth
) && (cnt
> 0); i
++) {
1304 flash_add_byte (info
, &cword
, *src
++);
1307 for (; (cnt
== 0) && (i
< info
->portwidth
); ++i
)
1308 flash_add_byte (info
, &cword
, flash_read8(p
+ i
));
1310 rc
= flash_write_cfiword (info
, wp
, cword
);
1311 unmap_physmem(p
, info
->portwidth
);
1316 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, i
);
1319 /* handle the aligned part */
1320 #ifdef CFG_FLASH_USE_BUFFER_WRITE
1321 buffered_size
= (info
->portwidth
/ info
->chipwidth
);
1322 buffered_size
*= info
->buffer_size
;
1323 while (cnt
>= info
->portwidth
) {
1324 /* prohibit buffer write when buffer_size is 1 */
1325 if (info
->buffer_size
== 1) {
1327 for (i
= 0; i
< info
->portwidth
; i
++)
1328 flash_add_byte (info
, &cword
, *src
++);
1329 if ((rc
= flash_write_cfiword (info
, wp
, cword
)) != 0)
1331 wp
+= info
->portwidth
;
1332 cnt
-= info
->portwidth
;
1336 /* write buffer until next buffered_size aligned boundary */
1337 i
= buffered_size
- (wp
% buffered_size
);
1340 if ((rc
= flash_write_cfibuffer (info
, wp
, src
, i
)) != ERR_OK
)
1342 i
-= i
& (info
->portwidth
- 1);
1346 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, i
);
1349 while (cnt
>= info
->portwidth
) {
1351 for (i
= 0; i
< info
->portwidth
; i
++) {
1352 flash_add_byte (info
, &cword
, *src
++);
1354 if ((rc
= flash_write_cfiword (info
, wp
, cword
)) != 0)
1356 wp
+= info
->portwidth
;
1357 cnt
-= info
->portwidth
;
1358 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, info
->portwidth
);
1360 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
1367 * handle unaligned tail bytes
1370 p
= map_physmem(wp
, info
->portwidth
, MAP_NOCACHE
);
1371 for (i
= 0; (i
< info
->portwidth
) && (cnt
> 0); ++i
) {
1372 flash_add_byte (info
, &cword
, *src
++);
1375 for (; i
< info
->portwidth
; ++i
)
1376 flash_add_byte (info
, &cword
, flash_read8(p
+ i
));
1377 unmap_physmem(p
, info
->portwidth
);
1379 return flash_write_cfiword (info
, wp
, cword
);
1382 /*-----------------------------------------------------------------------
1384 #ifdef CFG_FLASH_PROTECTION
1386 int flash_real_protect (flash_info_t
* info
, long sector
, int prot
)
1390 flash_write_cmd (info
, sector
, 0, FLASH_CMD_CLEAR_STATUS
);
1391 flash_write_cmd (info
, sector
, 0, FLASH_CMD_PROTECT
);
1393 flash_write_cmd (info
, sector
, 0, FLASH_CMD_PROTECT_SET
);
1395 flash_write_cmd (info
, sector
, 0, FLASH_CMD_PROTECT_CLEAR
);
1398 flash_full_status_check (info
, sector
, info
->erase_blk_tout
,
1399 prot
? "protect" : "unprotect")) == 0) {
1401 info
->protect
[sector
] = prot
;
1404 * On some of Intel's flash chips (marked via legacy_unlock)
1405 * unprotect unprotects all locking.
1407 if ((prot
== 0) && (info
->legacy_unlock
)) {
1410 for (i
= 0; i
< info
->sector_count
; i
++) {
1411 if (info
->protect
[i
])
1412 flash_real_protect (info
, i
, 1);
1419 /*-----------------------------------------------------------------------
1420 * flash_read_user_serial - read the OneTimeProgramming cells
1422 void flash_read_user_serial (flash_info_t
* info
, void *buffer
, int offset
,
1429 src
= flash_map (info
, 0, FLASH_OFFSET_USER_PROTECTION
);
1430 flash_write_cmd (info
, 0, 0, FLASH_CMD_READ_ID
);
1431 memcpy (dst
, src
+ offset
, len
);
1432 flash_write_cmd (info
, 0, 0, info
->cmd_reset
);
1433 flash_unmap(info
, 0, FLASH_OFFSET_USER_PROTECTION
, src
);
1437 * flash_read_factory_serial - read the device Id from the protection area
1439 void flash_read_factory_serial (flash_info_t
* info
, void *buffer
, int offset
,
1444 src
= flash_map (info
, 0, FLASH_OFFSET_INTEL_PROTECTION
);
1445 flash_write_cmd (info
, 0, 0, FLASH_CMD_READ_ID
);
1446 memcpy (buffer
, src
+ offset
, len
);
1447 flash_write_cmd (info
, 0, 0, info
->cmd_reset
);
1448 flash_unmap(info
, 0, FLASH_OFFSET_INTEL_PROTECTION
, src
);
1451 #endif /* CFG_FLASH_PROTECTION */
1453 /*-----------------------------------------------------------------------
1454 * Reverse the order of the erase regions in the CFI QRY structure.
1455 * This is needed for chips that are either a) correctly detected as
1456 * top-boot, or b) buggy.
1458 static void cfi_reverse_geometry(struct cfi_qry
*qry
)
1463 for (i
= 0, j
= qry
->num_erase_regions
- 1; i
< j
; i
++, j
--) {
1464 tmp
= qry
->erase_region_info
[i
];
1465 qry
->erase_region_info
[i
] = qry
->erase_region_info
[j
];
1466 qry
->erase_region_info
[j
] = tmp
;
1470 /*-----------------------------------------------------------------------
1471 * read jedec ids from device and set corresponding fields in info struct
1473 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1476 static void cmdset_intel_read_jedec_ids(flash_info_t
*info
)
1478 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1479 flash_write_cmd(info
, 0, 0, FLASH_CMD_READ_ID
);
1480 udelay(1000); /* some flash are slow to respond */
1481 info
->manufacturer_id
= flash_read_uchar (info
,
1482 FLASH_OFFSET_MANUFACTURER_ID
);
1483 info
->device_id
= flash_read_uchar (info
,
1484 FLASH_OFFSET_DEVICE_ID
);
1485 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1488 static int cmdset_intel_init(flash_info_t
*info
, struct cfi_qry
*qry
)
1490 info
->cmd_reset
= FLASH_CMD_RESET
;
1492 cmdset_intel_read_jedec_ids(info
);
1493 flash_write_cmd(info
, 0, info
->cfi_offset
, FLASH_CMD_CFI
);
1495 #ifdef CFG_FLASH_PROTECTION
1496 /* read legacy lock/unlock bit from intel flash */
1497 if (info
->ext_addr
) {
1498 info
->legacy_unlock
= flash_read_uchar (info
,
1499 info
->ext_addr
+ 5) & 0x08;
1506 static void cmdset_amd_read_jedec_ids(flash_info_t
*info
)
1508 flash_write_cmd(info
, 0, 0, AMD_CMD_RESET
);
1509 flash_unlock_seq(info
, 0);
1510 flash_write_cmd(info
, 0, info
->addr_unlock1
, FLASH_CMD_READ_ID
);
1511 udelay(1000); /* some flash are slow to respond */
1513 info
->manufacturer_id
= flash_read_uchar (info
,
1514 FLASH_OFFSET_MANUFACTURER_ID
);
1516 switch (info
->chipwidth
){
1517 case FLASH_CFI_8BIT
:
1518 info
->device_id
= flash_read_uchar (info
,
1519 FLASH_OFFSET_DEVICE_ID
);
1520 if (info
->device_id
== 0x7E) {
1521 /* AMD 3-byte (expanded) device ids */
1522 info
->device_id2
= flash_read_uchar (info
,
1523 FLASH_OFFSET_DEVICE_ID2
);
1524 info
->device_id2
<<= 8;
1525 info
->device_id2
|= flash_read_uchar (info
,
1526 FLASH_OFFSET_DEVICE_ID3
);
1529 case FLASH_CFI_16BIT
:
1530 info
->device_id
= flash_read_word (info
,
1531 FLASH_OFFSET_DEVICE_ID
);
1536 flash_write_cmd(info
, 0, 0, AMD_CMD_RESET
);
1539 static int cmdset_amd_init(flash_info_t
*info
, struct cfi_qry
*qry
)
1541 info
->cmd_reset
= AMD_CMD_RESET
;
1543 cmdset_amd_read_jedec_ids(info
);
1544 flash_write_cmd(info
, 0, info
->cfi_offset
, FLASH_CMD_CFI
);
1549 #ifdef CONFIG_FLASH_CFI_LEGACY
1550 static void flash_read_jedec_ids (flash_info_t
* info
)
1552 info
->manufacturer_id
= 0;
1553 info
->device_id
= 0;
1554 info
->device_id2
= 0;
1556 switch (info
->vendor
) {
1557 case CFI_CMDSET_INTEL_STANDARD
:
1558 case CFI_CMDSET_INTEL_EXTENDED
:
1559 cmdset_intel_read_jedec_ids(info
);
1561 case CFI_CMDSET_AMD_STANDARD
:
1562 case CFI_CMDSET_AMD_EXTENDED
:
1563 case CFI_CMDSET_SST_NEW
:
1564 cmdset_amd_read_jedec_ids(info
);
1571 /*-----------------------------------------------------------------------
1572 * Call board code to request info about non-CFI flash.
1573 * board_flash_get_legacy needs to fill in at least:
1574 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1576 static int flash_detect_legacy(ulong base
, int banknum
)
1578 flash_info_t
*info
= &flash_info
[banknum
];
1580 if (board_flash_get_legacy(base
, banknum
, info
)) {
1581 /* board code may have filled info completely. If not, we
1582 use JEDEC ID probing. */
1583 if (!info
->vendor
) {
1585 CFI_CMDSET_AMD_STANDARD
,
1586 CFI_CMDSET_INTEL_STANDARD
1590 for (i
= 0; i
< sizeof(modes
) / sizeof(modes
[0]); i
++) {
1591 info
->vendor
= modes
[i
];
1592 info
->start
[0] = base
;
1593 if (info
->portwidth
== FLASH_CFI_8BIT
1594 && info
->interface
== FLASH_CFI_X8X16
) {
1595 info
->addr_unlock1
= 0x2AAA;
1596 info
->addr_unlock2
= 0x5555;
1598 info
->addr_unlock1
= 0x5555;
1599 info
->addr_unlock2
= 0x2AAA;
1601 flash_read_jedec_ids(info
);
1602 debug("JEDEC PROBE: ID %x %x %x\n",
1603 info
->manufacturer_id
,
1606 if (jedec_flash_match(info
, base
))
1611 switch(info
->vendor
) {
1612 case CFI_CMDSET_INTEL_STANDARD
:
1613 case CFI_CMDSET_INTEL_EXTENDED
:
1614 info
->cmd_reset
= FLASH_CMD_RESET
;
1616 case CFI_CMDSET_AMD_STANDARD
:
1617 case CFI_CMDSET_AMD_EXTENDED
:
1618 case CFI_CMDSET_SST_NEW
:
1619 case CFI_CMDSET_AMD_LEGACY
:
1620 info
->cmd_reset
= AMD_CMD_RESET
;
1623 info
->flash_id
= FLASH_MAN_CFI
;
1626 return 0; /* use CFI */
1629 static inline int flash_detect_legacy(ulong base
, int banknum
)
1631 return 0; /* use CFI */
1635 /*-----------------------------------------------------------------------
1636 * detect if flash is compatible with the Common Flash Interface (CFI)
1637 * http://www.jedec.org/download/search/jesd68.pdf
1639 static void flash_read_cfi (flash_info_t
*info
, void *buf
,
1640 unsigned int start
, size_t len
)
1645 for (i
= 0; i
< len
; i
++)
1646 p
[i
] = flash_read_uchar(info
, start
+ i
);
1649 static int __flash_detect_cfi (flash_info_t
* info
, struct cfi_qry
*qry
)
1654 cfi_offset
< sizeof(flash_offset_cfi
) / sizeof(uint
);
1656 flash_write_cmd (info
, 0, flash_offset_cfi
[cfi_offset
],
1658 if (flash_isequal (info
, 0, FLASH_OFFSET_CFI_RESP
, 'Q')
1659 && flash_isequal (info
, 0, FLASH_OFFSET_CFI_RESP
+ 1, 'R')
1660 && flash_isequal (info
, 0, FLASH_OFFSET_CFI_RESP
+ 2, 'Y')) {
1661 flash_read_cfi(info
, qry
, FLASH_OFFSET_CFI_RESP
,
1662 sizeof(struct cfi_qry
));
1663 info
->interface
= le16_to_cpu(qry
->interface_desc
);
1665 info
->cfi_offset
= flash_offset_cfi
[cfi_offset
];
1666 debug ("device interface is %d\n",
1668 debug ("found port %d chip %d ",
1669 info
->portwidth
, info
->chipwidth
);
1670 debug ("port %d bits chip %d bits\n",
1671 info
->portwidth
<< CFI_FLASH_SHIFT_WIDTH
,
1672 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
1674 /* calculate command offsets as in the Linux driver */
1675 info
->addr_unlock1
= 0x555;
1676 info
->addr_unlock2
= 0x2aa;
1679 * modify the unlock address if we are
1680 * in compatibility mode
1682 if ( /* x8/x16 in x8 mode */
1683 ((info
->chipwidth
== FLASH_CFI_BY8
) &&
1684 (info
->interface
== FLASH_CFI_X8X16
)) ||
1685 /* x16/x32 in x16 mode */
1686 ((info
->chipwidth
== FLASH_CFI_BY16
) &&
1687 (info
->interface
== FLASH_CFI_X16X32
)))
1689 info
->addr_unlock1
= 0xaaa;
1690 info
->addr_unlock2
= 0x555;
1692 if (/* info->vendor */ le16_to_cpu(qry
->p_id
) == CFI_CMDSET_SST_NEW
) {
1693 info
->addr_unlock1
= 0x5555;
1694 info
->addr_unlock2
= 0x2aaa;
1697 info
->name
= "CFI conformant";
1705 static int flash_detect_cfi (flash_info_t
* info
, struct cfi_qry
*qry
)
1707 debug ("flash detect cfi\n");
1709 #ifdef CONFIG_MINI2440
1711 * This bypasses the non-working probe, force the 16x16 mode, and also
1712 * forces the startup init sequence for CFI recognition.
1713 * Michel Pollet <buserror@gmail.com>
1715 info
->portwidth
= CFG_FLASH_CFI_WIDTH
;
1716 info
->chipwidth
= info
->portwidth
;
1718 flash_write_cmd (info
, 0, 0, AMD_CMD_RESET
);
1719 flash_write_cmd (info
, 0, 0x5555, 0xaa);
1720 flash_write_cmd (info
, 0, 0x2aaa, 0x55);
1722 if (__flash_detect_cfi(info
, qry
))
1726 for (info
->portwidth
= CFG_FLASH_CFI_WIDTH
;
1727 info
->portwidth
<= FLASH_CFI_64BIT
; info
->portwidth
<<= 1) {
1728 for (info
->chipwidth
= FLASH_CFI_BY8
;
1729 info
->chipwidth
<= info
->portwidth
;
1730 info
->chipwidth
<<= 1) {
1731 /* We do not yet know what kind of commandset to use, so we issue
1732 the reset command in both Intel and AMD variants, in the hope
1733 that AMD flash roms ignore the Intel command. */
1734 flash_write_cmd (info
, 0, 0, AMD_CMD_RESET
);
1735 flash_write_cmd (info
, 0, 0, FLASH_CMD_RESET
);
1737 if (__flash_detect_cfi(info
, qry
))
1741 debug ("not found\n");
1746 * Manufacturer-specific quirks. Add workarounds for geometry
1747 * reversal, etc. here.
1749 static void flash_fixup_amd(flash_info_t
*info
, struct cfi_qry
*qry
)
1751 /* check if flash geometry needs reversal */
1752 if (qry
->num_erase_regions
> 1) {
1753 /* reverse geometry if top boot part */
1754 if (info
->cfi_version
< 0x3131) {
1755 /* CFI < 1.1, try to guess from device id */
1756 if ((info
->device_id
& 0x80) != 0)
1757 cfi_reverse_geometry(qry
);
1758 } else if (flash_read_uchar(info
, info
->ext_addr
+ 0xf) == 3) {
1759 /* CFI >= 1.1, deduct from top/bottom flag */
1760 /* note: ext_addr is valid since cfi_version > 0 */
1761 cfi_reverse_geometry(qry
);
1766 static void flash_fixup_atmel(flash_info_t
*info
, struct cfi_qry
*qry
)
1768 int reverse_geometry
= 0;
1770 /* Check the "top boot" bit in the PRI */
1771 if (info
->ext_addr
&& !(flash_read_uchar(info
, info
->ext_addr
+ 6) & 1))
1772 reverse_geometry
= 1;
1774 /* AT49BV6416(T) list the erase regions in the wrong order.
1775 * However, the device ID is identical with the non-broken
1776 * AT49BV642D since u-boot only reads the low byte (they
1777 * differ in the high byte.) So leave out this fixup for now.
1780 if (info
->device_id
== 0xd6 || info
->device_id
== 0xd2)
1781 reverse_geometry
= !reverse_geometry
;
1784 if (reverse_geometry
)
1785 cfi_reverse_geometry(qry
);
1789 * The following code cannot be run from FLASH!
1792 ulong
flash_get_size (ulong base
, int banknum
)
1794 flash_info_t
*info
= &flash_info
[banknum
];
1796 flash_sect_t sect_cnt
;
1797 unsigned long sector
;
1800 uchar num_erase_regions
;
1801 int erase_region_size
;
1802 int erase_region_count
;
1806 info
->cfi_version
= 0;
1807 #ifdef CFG_FLASH_PROTECTION
1808 info
->legacy_unlock
= 0;
1811 info
->start
[0] = base
;
1813 if (flash_detect_cfi (info
, &qry
)) {
1814 info
->vendor
= le16_to_cpu(qry
.p_id
);
1815 info
->ext_addr
= le16_to_cpu(qry
.p_adr
);
1816 num_erase_regions
= qry
.num_erase_regions
;
1818 if (info
->ext_addr
) {
1819 info
->cfi_version
= (ushort
) flash_read_uchar (info
,
1820 info
->ext_addr
+ 3) << 8;
1821 info
->cfi_version
|= (ushort
) flash_read_uchar (info
,
1822 info
->ext_addr
+ 4);
1826 flash_printqry (&qry
);
1829 switch (info
->vendor
) {
1830 case CFI_CMDSET_INTEL_STANDARD
:
1831 case CFI_CMDSET_INTEL_EXTENDED
:
1832 cmdset_intel_init(info
, &qry
);
1834 case CFI_CMDSET_AMD_STANDARD
:
1835 case CFI_CMDSET_AMD_EXTENDED
:
1836 case CFI_CMDSET_SST_NEW
:
1837 cmdset_amd_init(info
, &qry
);
1840 printf("CFI: Unknown command set 0x%x\n",
1843 * Unfortunately, this means we don't know how
1844 * to get the chip back to Read mode. Might
1845 * as well try an Intel-style reset...
1847 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1851 /* Do manufacturer-specific fixups */
1852 switch (info
->manufacturer_id
) {
1854 flash_fixup_amd(info
, &qry
);
1857 flash_fixup_atmel(info
, &qry
);
1861 debug ("manufacturer is %d\n", info
->vendor
);
1862 debug ("manufacturer id is 0x%x\n", info
->manufacturer_id
);
1863 debug ("device id is 0x%x\n", info
->device_id
);
1864 debug ("device id2 is 0x%x\n", info
->device_id2
);
1865 debug ("cfi version is 0x%04x\n", info
->cfi_version
);
1867 size_ratio
= info
->portwidth
/ info
->chipwidth
;
1868 /* if the chip is x8/x16 reduce the ratio by half */
1869 if ((info
->interface
== FLASH_CFI_X8X16
)
1870 && (info
->chipwidth
== FLASH_CFI_BY8
)) {
1873 debug ("size_ratio %d port %d bits chip %d bits\n",
1874 size_ratio
, info
->portwidth
<< CFI_FLASH_SHIFT_WIDTH
,
1875 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
1876 debug ("found %d erase regions\n", num_erase_regions
);
1879 for (i
= 0; i
< num_erase_regions
; i
++) {
1880 if (i
> NUM_ERASE_REGIONS
) {
1881 printf ("%d erase regions found, only %d used\n",
1882 num_erase_regions
, NUM_ERASE_REGIONS
);
1886 tmp
= le32_to_cpu(qry
.erase_region_info
[i
]);
1887 debug("erase region %u: 0x%08lx\n", i
, tmp
);
1889 erase_region_count
= (tmp
& 0xffff) + 1;
1892 (tmp
& 0xffff) ? ((tmp
& 0xffff) * 256) : 128;
1893 debug ("erase_region_count = %d erase_region_size = %d\n",
1894 erase_region_count
, erase_region_size
);
1895 for (j
= 0; j
< erase_region_count
; j
++) {
1896 if (sect_cnt
>= CFG_MAX_FLASH_SECT
) {
1897 #ifndef CONFIG_MINI2440
1898 printf("ERROR: too many flash sectors %d/%d max\n", sect_cnt
, CFG_MAX_FLASH_SECT
);
1902 info
->start
[sect_cnt
] = sector
;
1903 sector
+= (erase_region_size
* size_ratio
);
1906 * Only read protection status from
1907 * supported devices (intel...)
1909 switch (info
->vendor
) {
1910 case CFI_CMDSET_INTEL_EXTENDED
:
1911 case CFI_CMDSET_INTEL_STANDARD
:
1912 info
->protect
[sect_cnt
] =
1913 flash_isset (info
, sect_cnt
,
1914 FLASH_OFFSET_PROTECT
,
1915 FLASH_STATUS_PROTECT
);
1918 /* default: not protected */
1919 info
->protect
[sect_cnt
] = 0;
1926 info
->sector_count
= sect_cnt
;
1927 info
->size
= 1 << qry
.dev_size
;
1928 /* multiply the size by the number of chips */
1929 info
->size
*= size_ratio
;
1930 info
->buffer_size
= 1 << le16_to_cpu(qry
.max_buf_write_size
);
1931 tmp
= 1 << qry
.block_erase_timeout_typ
;
1932 info
->erase_blk_tout
= tmp
*
1933 (1 << qry
.block_erase_timeout_max
);
1934 tmp
= (1 << qry
.buf_write_timeout_typ
) *
1935 (1 << qry
.buf_write_timeout_max
);
1937 /* round up when converting to ms */
1938 info
->buffer_write_tout
= (tmp
+ 999) / 1000;
1939 tmp
= (1 << qry
.word_write_timeout_typ
) *
1940 (1 << qry
.word_write_timeout_max
);
1941 /* round up when converting to ms */
1942 info
->write_tout
= (tmp
+ 999) / 1000;
1943 info
->flash_id
= FLASH_MAN_CFI
;
1944 if ((info
->interface
== FLASH_CFI_X8X16
) &&
1945 (info
->chipwidth
== FLASH_CFI_BY8
)) {
1946 /* XXX - Need to test on x8/x16 in parallel. */
1947 info
->portwidth
>>= 1;
1951 flash_write_cmd (info
, 0, 0, info
->cmd_reset
);
1952 return (info
->size
);
1955 /*-----------------------------------------------------------------------
1957 unsigned long flash_init (void)
1959 unsigned long size
= 0;
1962 #ifdef CFG_FLASH_PROTECTION
1963 char *s
= getenv("unlock");
1966 /* Init: no FLASHes known */
1967 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; ++i
) {
1968 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
1970 if (!flash_detect_legacy (bank_base
[i
], i
))
1971 flash_get_size (bank_base
[i
], i
);
1972 size
+= flash_info
[i
].size
;
1973 if (flash_info
[i
].flash_id
== FLASH_UNKNOWN
) {
1974 #ifndef CFG_FLASH_QUIET_TEST
1975 #ifdef CONFIG_MINI2440
1976 printf ("NOR Flash not found. Use hardware switch and 'flinit'\n");
1978 printf ("## Unknown FLASH on Bank %d "
1979 "- Size = 0x%08lx = %ld MB\n",
1980 i
+1, flash_info
[i
].size
,
1981 flash_info
[i
].size
<< 20);
1983 #endif /* CFG_FLASH_QUIET_TEST */
1985 #ifdef CFG_FLASH_PROTECTION
1986 else if ((s
!= NULL
) && (strcmp(s
, "yes") == 0)) {
1988 * Only the U-Boot image and it's environment
1989 * is protected, all other sectors are
1990 * unprotected (unlocked) if flash hardware
1991 * protection is used (CFG_FLASH_PROTECTION)
1992 * and the environment variable "unlock" is
1995 if (flash_info
[i
].legacy_unlock
) {
1999 * Disable legacy_unlock temporarily,
2000 * since flash_real_protect would
2001 * relock all other sectors again
2004 flash_info
[i
].legacy_unlock
= 0;
2007 * Legacy unlocking (e.g. Intel J3) ->
2008 * unlock only one sector. This will
2009 * unlock all sectors.
2011 flash_real_protect (&flash_info
[i
], 0, 0);
2013 flash_info
[i
].legacy_unlock
= 1;
2016 * Manually mark other sectors as
2017 * unlocked (unprotected)
2019 for (k
= 1; k
< flash_info
[i
].sector_count
; k
++)
2020 flash_info
[i
].protect
[k
] = 0;
2023 * No legancy unlocking -> unlock all sectors
2025 flash_protect (FLAG_PROTECT_CLEAR
,
2026 flash_info
[i
].start
[0],
2027 flash_info
[i
].start
[0]
2028 + flash_info
[i
].size
- 1,
2032 #endif /* CFG_FLASH_PROTECTION */
2035 /* Monitor protection ON by default */
2036 #if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
2037 flash_protect (FLAG_PROTECT_SET
,
2039 CFG_MONITOR_BASE
+ monitor_flash_len
- 1,
2040 flash_get_info(CFG_MONITOR_BASE
));
2043 /* Environment protection ON by default */
2044 #ifdef CFG_ENV_IS_IN_FLASH
2045 flash_protect (FLAG_PROTECT_SET
,
2047 CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1,
2048 flash_get_info(CFG_ENV_ADDR
));
2051 /* Redundant environment protection ON by default */
2052 #ifdef CFG_ENV_ADDR_REDUND
2053 flash_protect (FLAG_PROTECT_SET
,
2054 CFG_ENV_ADDR_REDUND
,
2055 CFG_ENV_ADDR_REDUND
+ CFG_ENV_SIZE_REDUND
- 1,
2056 flash_get_info(CFG_ENV_ADDR_REDUND
));
2061 #endif /* CFG_FLASH_CFI */