1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2002-2004
4 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
6 * Copyright (C) 2003 Arabella Software Ltd.
7 * Yuli Barcohen <yuli@arabellasw.com>
13 * Tolunay Orkun <listmember@orkun.us>
16 /* The DEBUG define must be before common to enable debugging */
24 #include <fdt_support.h>
29 #include <asm/global_data.h>
30 #include <asm/processor.h>
32 #include <asm/byteorder.h>
33 #include <asm/unaligned.h>
34 #include <env_internal.h>
35 #include <linux/delay.h>
36 #include <mtd/cfi_flash.h>
40 * This file implements a Common Flash Interface (CFI) driver for
43 * The width of the port and the width of the chips are determined at
44 * initialization. These widths are used to calculate the address for
45 * access CFI data structures.
48 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
49 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
50 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
51 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
52 * AMD CFI Specification, Release 2.0 December 1, 2001
53 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
54 * Device IDs, Publication Number 25538 Revision A, November 8, 2001
56 * Define CFG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
57 * reading and writing ... (yes there is such a Hardware).
60 DECLARE_GLOBAL_DATA_PTR
;
62 static uint flash_offset_cfi
[2] = { FLASH_OFFSET_CFI
, FLASH_OFFSET_CFI_ALT
};
63 #ifdef CONFIG_FLASH_CFI_MTD
64 static uint flash_verbose
= 1;
66 #define flash_verbose 1
69 flash_info_t flash_info
[CFI_MAX_FLASH_BANKS
]; /* FLASH chips info */
71 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
72 #define __maybe_weak __weak
74 #define __maybe_weak static
78 * 0xffff is an undefined value for the configuration register. When
79 * this value is returned, the configuration register shall not be
80 * written at all (default mode).
82 static u16
cfi_flash_config_reg(int i
)
84 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
85 return ((u16
[])CONFIG_SYS_CFI_FLASH_CONFIG_REGS
)[i
];
91 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
92 int cfi_flash_num_flash_banks
= CFI_MAX_FLASH_BANKS
;
94 int cfi_flash_num_flash_banks
;
97 #ifdef CONFIG_CFI_FLASH /* for driver model */
98 static void cfi_flash_init_dm(void)
102 cfi_flash_num_flash_banks
= 0;
104 * The uclass_first_device() will probe the first device and
105 * uclass_next_device() will probe the rest if they exist. So
106 * that cfi_flash_probe() will get called assigning the base
107 * addresses that are available.
109 for (uclass_first_device(UCLASS_MTD
, &dev
);
111 uclass_next_device(&dev
)) {
115 phys_addr_t
cfi_flash_bank_addr(int i
)
117 return flash_info
[i
].base
;
120 __weak phys_addr_t
cfi_flash_bank_addr(int i
)
122 return ((phys_addr_t
[])CFG_SYS_FLASH_BANKS_LIST
)[i
];
126 __weak
unsigned long cfi_flash_bank_size(int i
)
128 #ifdef CFG_SYS_FLASH_BANKS_SIZES
129 return ((unsigned long [])CFG_SYS_FLASH_BANKS_SIZES
)[i
];
135 __maybe_weak
void flash_write8(u8 value
, void *addr
)
137 __raw_writeb(value
, addr
);
140 __maybe_weak
void flash_write16(u16 value
, void *addr
)
142 __raw_writew(value
, addr
);
145 __maybe_weak
void flash_write32(u32 value
, void *addr
)
147 __raw_writel(value
, addr
);
150 __maybe_weak
void flash_write64(u64 value
, void *addr
)
152 /* No architectures currently implement __raw_writeq() */
153 *(volatile u64
*)addr
= value
;
156 __maybe_weak u8
flash_read8(void *addr
)
158 return __raw_readb(addr
);
161 __maybe_weak u16
flash_read16(void *addr
)
163 return __raw_readw(addr
);
166 __maybe_weak u32
flash_read32(void *addr
)
168 return __raw_readl(addr
);
171 __maybe_weak u64
flash_read64(void *addr
)
173 /* No architectures currently implement __raw_readq() */
174 return *(volatile u64
*)addr
;
177 /*-----------------------------------------------------------------------
179 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || \
180 (defined(CONFIG_SYS_MONITOR_BASE) && \
181 (CONFIG_SYS_MONITOR_BASE >= CFG_SYS_FLASH_BASE))
182 static flash_info_t
*flash_get_info(ulong base
)
187 for (i
= 0; i
< CFI_FLASH_BANKS
; i
++) {
188 info
= &flash_info
[i
];
189 if (info
->size
&& info
->start
[0] <= base
&&
190 base
<= info
->start
[0] + info
->size
- 1)
198 unsigned long flash_sector_size(flash_info_t
*info
, flash_sect_t sect
)
200 if (sect
!= (info
->sector_count
- 1))
201 return info
->start
[sect
+ 1] - info
->start
[sect
];
203 return info
->start
[0] + info
->size
- info
->start
[sect
];
206 /*-----------------------------------------------------------------------
207 * create an address based on the offset and the port width
210 flash_map(flash_info_t
*info
, flash_sect_t sect
, uint offset
)
212 unsigned int byte_offset
= offset
* info
->portwidth
;
214 return (void *)(info
->start
[sect
] + (byte_offset
<< info
->chip_lsb
));
217 static inline void flash_unmap(flash_info_t
*info
, flash_sect_t sect
,
218 unsigned int offset
, void *addr
)
222 /*-----------------------------------------------------------------------
223 * make a proper sized command based on the port and chip widths
225 static void flash_make_cmd(flash_info_t
*info
, u32 cmd
, void *cmdbuf
)
230 #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA)
231 u32 cmd_le
= cpu_to_le32(cmd
);
234 uchar
*cp
= (uchar
*) cmdbuf
;
236 for (i
= info
->portwidth
; i
> 0; i
--) {
237 cword_offset
= (info
->portwidth
- i
) % info
->chipwidth
;
238 #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA)
239 cp_offset
= info
->portwidth
- i
;
240 val
= *((uchar
*)&cmd_le
+ cword_offset
);
243 val
= *((uchar
*)&cmd
+ sizeof(u32
) - cword_offset
- 1);
245 cp
[cp_offset
] = (cword_offset
>= sizeof(u32
)) ? 0x00 : val
;
250 /*-----------------------------------------------------------------------
253 static void print_longlong(char *str
, unsigned long long data
)
259 for (i
= 0; i
< 8; i
++)
260 sprintf(&str
[i
* 2], "%2.2x", *cp
++);
263 static void flash_printqry(struct cfi_qry
*qry
)
268 for (x
= 0; x
< sizeof(struct cfi_qry
); x
+= 16) {
270 for (y
= 0; y
< 16; y
++)
271 debug("%2.2x ", p
[x
+ y
]);
273 for (y
= 0; y
< 16; y
++) {
274 unsigned char c
= p
[x
+ y
];
276 if (c
>= 0x20 && c
<= 0x7e)
286 /*-----------------------------------------------------------------------
287 * read a character at a port width address
289 static inline uchar
flash_read_uchar(flash_info_t
*info
, uint offset
)
294 cp
= flash_map(info
, 0, offset
);
295 #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA)
296 retval
= flash_read8(cp
);
298 retval
= flash_read8(cp
+ info
->portwidth
- 1);
300 flash_unmap(info
, 0, offset
, cp
);
304 /*-----------------------------------------------------------------------
305 * read a word at a port width address, assume 16bit bus
307 static inline ushort
flash_read_word(flash_info_t
*info
, uint offset
)
309 ushort
*addr
, retval
;
311 addr
= flash_map(info
, 0, offset
);
312 retval
= flash_read16(addr
);
313 flash_unmap(info
, 0, offset
, addr
);
317 /*-----------------------------------------------------------------------
318 * read a long word by picking the least significant byte of each maximum
319 * port size word. Swap for ppc format.
321 static ulong
flash_read_long (flash_info_t
*info
, flash_sect_t sect
,
330 addr
= flash_map(info
, sect
, offset
);
333 debug("long addr is at %p info->portwidth = %d\n", addr
,
335 for (x
= 0; x
< 4 * info
->portwidth
; x
++)
336 debug("addr[%x] = 0x%x\n", x
, flash_read8(addr
+ x
));
338 #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA)
339 retval
= ((flash_read8(addr
) << 16) |
340 (flash_read8(addr
+ info
->portwidth
) << 24) |
341 (flash_read8(addr
+ 2 * info
->portwidth
)) |
342 (flash_read8(addr
+ 3 * info
->portwidth
) << 8));
344 retval
= ((flash_read8(addr
+ 2 * info
->portwidth
- 1) << 24) |
345 (flash_read8(addr
+ info
->portwidth
- 1) << 16) |
346 (flash_read8(addr
+ 4 * info
->portwidth
- 1) << 8) |
347 (flash_read8(addr
+ 3 * info
->portwidth
- 1)));
349 flash_unmap(info
, sect
, offset
, addr
);
355 * Write a proper sized command to the correct address
357 static void flash_write_cmd(flash_info_t
*info
, flash_sect_t sect
,
358 uint offset
, u32 cmd
)
363 addr
= flash_map(info
, sect
, offset
);
364 flash_make_cmd(info
, cmd
, &cword
);
365 switch (info
->portwidth
) {
367 debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr
, cmd
,
368 cword
.w8
, info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
369 flash_write8(cword
.w8
, addr
);
371 case FLASH_CFI_16BIT
:
372 debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr
,
374 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
375 flash_write16(cword
.w16
, addr
);
377 case FLASH_CFI_32BIT
:
378 debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr
,
380 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
381 flash_write32(cword
.w32
, addr
);
383 case FLASH_CFI_64BIT
:
388 print_longlong(str
, cword
.w64
);
390 debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
392 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
395 flash_write64(cword
.w64
, addr
);
399 /* Ensure all the instructions are fully finished */
402 flash_unmap(info
, sect
, offset
, addr
);
405 static void flash_unlock_seq(flash_info_t
*info
, flash_sect_t sect
)
407 flash_write_cmd(info
, sect
, info
->addr_unlock1
, AMD_CMD_UNLOCK_START
);
408 flash_write_cmd(info
, sect
, info
->addr_unlock2
, AMD_CMD_UNLOCK_ACK
);
411 /*-----------------------------------------------------------------------
413 static int flash_isequal(flash_info_t
*info
, flash_sect_t sect
, uint offset
,
420 addr
= flash_map(info
, sect
, offset
);
421 flash_make_cmd(info
, cmd
, &cword
);
423 debug("is= cmd %x(%c) addr %p ", cmd
, cmd
, addr
);
424 switch (info
->portwidth
) {
426 debug("is= %x %x\n", flash_read8(addr
), cword
.w8
);
427 retval
= (flash_read8(addr
) == cword
.w8
);
429 case FLASH_CFI_16BIT
:
430 debug("is= %4.4x %4.4x\n", flash_read16(addr
), cword
.w16
);
431 retval
= (flash_read16(addr
) == cword
.w16
);
433 case FLASH_CFI_32BIT
:
434 debug("is= %8.8x %8.8x\n", flash_read32(addr
), cword
.w32
);
435 retval
= (flash_read32(addr
) == cword
.w32
);
437 case FLASH_CFI_64BIT
:
443 print_longlong(str1
, flash_read64(addr
));
444 print_longlong(str2
, cword
.w64
);
445 debug("is= %s %s\n", str1
, str2
);
448 retval
= (flash_read64(addr
) == cword
.w64
);
454 flash_unmap(info
, sect
, offset
, addr
);
459 /*-----------------------------------------------------------------------
461 static int flash_isset(flash_info_t
*info
, flash_sect_t sect
, uint offset
,
468 addr
= flash_map(info
, sect
, offset
);
469 flash_make_cmd(info
, cmd
, &cword
);
470 switch (info
->portwidth
) {
472 retval
= ((flash_read8(addr
) & cword
.w8
) == cword
.w8
);
474 case FLASH_CFI_16BIT
:
475 retval
= ((flash_read16(addr
) & cword
.w16
) == cword
.w16
);
477 case FLASH_CFI_32BIT
:
478 retval
= ((flash_read32(addr
) & cword
.w32
) == cword
.w32
);
480 case FLASH_CFI_64BIT
:
481 retval
= ((flash_read64(addr
) & cword
.w64
) == cword
.w64
);
487 flash_unmap(info
, sect
, offset
, addr
);
492 /*-----------------------------------------------------------------------
494 static int flash_toggle(flash_info_t
*info
, flash_sect_t sect
, uint offset
,
501 addr
= flash_map(info
, sect
, offset
);
502 flash_make_cmd(info
, cmd
, &cword
);
503 switch (info
->portwidth
) {
505 retval
= flash_read8(addr
) != flash_read8(addr
);
507 case FLASH_CFI_16BIT
:
508 retval
= flash_read16(addr
) != flash_read16(addr
);
510 case FLASH_CFI_32BIT
:
511 retval
= flash_read32(addr
) != flash_read32(addr
);
513 case FLASH_CFI_64BIT
:
514 retval
= ((flash_read32(addr
) != flash_read32(addr
)) ||
515 (flash_read32(addr
+ 4) != flash_read32(addr
+ 4)));
521 flash_unmap(info
, sect
, offset
, addr
);
527 * flash_is_busy - check to see if the flash is busy
529 * This routine checks the status of the chip and returns true if the
532 static int flash_is_busy(flash_info_t
*info
, flash_sect_t sect
)
536 switch (info
->vendor
) {
537 case CFI_CMDSET_INTEL_PROG_REGIONS
:
538 case CFI_CMDSET_INTEL_STANDARD
:
539 case CFI_CMDSET_INTEL_EXTENDED
:
540 retval
= !flash_isset(info
, sect
, 0, FLASH_STATUS_DONE
);
542 case CFI_CMDSET_AMD_STANDARD
:
543 case CFI_CMDSET_AMD_EXTENDED
:
544 #ifdef CONFIG_FLASH_CFI_LEGACY
545 case CFI_CMDSET_AMD_LEGACY
:
547 if (info
->sr_supported
) {
548 flash_write_cmd(info
, sect
, info
->addr_unlock1
,
549 FLASH_CMD_READ_STATUS
);
550 retval
= !flash_isset(info
, sect
, 0,
553 retval
= flash_toggle(info
, sect
, 0,
561 debug("%s: %d\n", __func__
, retval
);
565 /*-----------------------------------------------------------------------
566 * wait for XSR.7 to be set. Time out with an error if it does not.
567 * This routine does not set the flash to read-array mode.
569 static int flash_status_check(flash_info_t
*info
, flash_sect_t sector
,
570 ulong tout
, char *prompt
)
574 #if CONFIG_SYS_HZ != 1000
575 /* Avoid overflow for large HZ */
576 if ((ulong
)CONFIG_SYS_HZ
> 100000)
577 tout
*= (ulong
)CONFIG_SYS_HZ
/ 1000;
579 tout
= DIV_ROUND_UP(tout
* (ulong
)CONFIG_SYS_HZ
, 1000);
582 /* Wait for command completion */
583 #ifdef CFG_SYS_LOW_RES_TIMER
586 start
= get_timer(0);
588 while (flash_is_busy(info
, sector
)) {
589 if (get_timer(start
) > tout
) {
590 printf("Flash %s timeout at address %lx data %lx\n",
591 prompt
, info
->start
[sector
],
592 flash_read_long(info
, sector
, 0));
593 flash_write_cmd(info
, sector
, 0, info
->cmd_reset
);
597 udelay(1); /* also triggers watchdog */
602 /*-----------------------------------------------------------------------
603 * Wait for XSR.7 to be set, if it times out print an error, otherwise
604 * do a full status check.
606 * This routine sets the flash to read-array mode.
608 static int flash_full_status_check(flash_info_t
*info
, flash_sect_t sector
,
609 ulong tout
, char *prompt
)
613 retcode
= flash_status_check(info
, sector
, tout
, prompt
);
614 switch (info
->vendor
) {
615 case CFI_CMDSET_INTEL_PROG_REGIONS
:
616 case CFI_CMDSET_INTEL_EXTENDED
:
617 case CFI_CMDSET_INTEL_STANDARD
:
618 if (retcode
== ERR_OK
&&
619 !flash_isset(info
, sector
, 0, FLASH_STATUS_DONE
)) {
621 printf("Flash %s error at address %lx\n", prompt
,
622 info
->start
[sector
]);
623 if (flash_isset(info
, sector
, 0, FLASH_STATUS_ECLBS
|
624 FLASH_STATUS_PSLBS
)) {
625 puts("Command Sequence Error.\n");
626 } else if (flash_isset(info
, sector
, 0,
627 FLASH_STATUS_ECLBS
)) {
628 puts("Block Erase Error.\n");
629 retcode
= ERR_NOT_ERASED
;
630 } else if (flash_isset(info
, sector
, 0,
631 FLASH_STATUS_PSLBS
)) {
632 puts("Locking Error\n");
634 if (flash_isset(info
, sector
, 0, FLASH_STATUS_DPS
)) {
635 puts("Block locked.\n");
636 retcode
= ERR_PROTECTED
;
638 if (flash_isset(info
, sector
, 0, FLASH_STATUS_VPENS
))
639 puts("Vpp Low Error.\n");
641 flash_write_cmd(info
, sector
, 0, info
->cmd_reset
);
650 static int use_flash_status_poll(flash_info_t
*info
)
652 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
653 if (info
->vendor
== CFI_CMDSET_AMD_EXTENDED
||
654 info
->vendor
== CFI_CMDSET_AMD_STANDARD
)
660 static int flash_status_poll(flash_info_t
*info
, void *src
, void *dst
,
661 ulong tout
, char *prompt
)
663 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
667 #if CONFIG_SYS_HZ != 1000
668 /* Avoid overflow for large HZ */
669 if ((ulong
)CONFIG_SYS_HZ
> 100000)
670 tout
*= (ulong
)CONFIG_SYS_HZ
/ 1000;
672 tout
= DIV_ROUND_UP(tout
* (ulong
)CONFIG_SYS_HZ
, 1000);
675 /* Wait for command completion */
676 #ifdef CFG_SYS_LOW_RES_TIMER
679 start
= get_timer(0);
682 switch (info
->portwidth
) {
684 ready
= flash_read8(dst
) == flash_read8(src
);
686 case FLASH_CFI_16BIT
:
687 ready
= flash_read16(dst
) == flash_read16(src
);
689 case FLASH_CFI_32BIT
:
690 ready
= flash_read32(dst
) == flash_read32(src
);
692 case FLASH_CFI_64BIT
:
693 ready
= flash_read64(dst
) == flash_read64(src
);
701 if (get_timer(start
) > tout
) {
702 printf("Flash %s timeout at address %lx data %lx\n",
703 prompt
, (ulong
)dst
, (ulong
)flash_read8(dst
));
706 udelay(1); /* also triggers watchdog */
708 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
712 /*-----------------------------------------------------------------------
714 static void flash_add_byte(flash_info_t
*info
, cfiword_t
*cword
, uchar c
)
716 #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA)
719 unsigned long long ll
;
722 switch (info
->portwidth
) {
726 case FLASH_CFI_16BIT
:
727 #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA)
730 cword
->w16
= (cword
->w16
>> 8) | w
;
732 cword
->w16
= (cword
->w16
<< 8) | c
;
735 case FLASH_CFI_32BIT
:
736 #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA)
739 cword
->w32
= (cword
->w32
>> 8) | l
;
741 cword
->w32
= (cword
->w32
<< 8) | c
;
744 case FLASH_CFI_64BIT
:
745 #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA)
748 cword
->w64
= (cword
->w64
>> 8) | ll
;
750 cword
->w64
= (cword
->w64
<< 8) | c
;
757 * Loop through the sector table starting from the previously found sector.
758 * Searches forwards or backwards, dependent on the passed address.
760 static flash_sect_t
find_sector(flash_info_t
*info
, ulong addr
)
762 static flash_sect_t saved_sector
; /* previously found sector */
763 static flash_info_t
*saved_info
; /* previously used flash bank */
764 flash_sect_t sector
= saved_sector
;
766 if (info
!= saved_info
|| sector
>= info
->sector_count
)
769 while ((sector
< info
->sector_count
- 1) &&
770 (info
->start
[sector
] < addr
))
772 while ((info
->start
[sector
] > addr
) && (sector
> 0))
774 * also decrements the sector in case of an overshot
779 saved_sector
= sector
;
784 /*-----------------------------------------------------------------------
786 static int flash_write_cfiword(flash_info_t
*info
, ulong dest
, cfiword_t cword
)
788 void *dstaddr
= (void *)dest
;
790 flash_sect_t sect
= 0;
793 /* Check if Flash is (sufficiently) erased */
794 switch (info
->portwidth
) {
796 flag
= ((flash_read8(dstaddr
) & cword
.w8
) == cword
.w8
);
798 case FLASH_CFI_16BIT
:
799 flag
= ((flash_read16(dstaddr
) & cword
.w16
) == cword
.w16
);
801 case FLASH_CFI_32BIT
:
802 flag
= ((flash_read32(dstaddr
) & cword
.w32
) == cword
.w32
);
804 case FLASH_CFI_64BIT
:
805 flag
= ((flash_read64(dstaddr
) & cword
.w64
) == cword
.w64
);
812 return ERR_NOT_ERASED
;
814 /* Disable interrupts which might cause a timeout here */
815 flag
= disable_interrupts();
817 switch (info
->vendor
) {
818 case CFI_CMDSET_INTEL_PROG_REGIONS
:
819 case CFI_CMDSET_INTEL_EXTENDED
:
820 case CFI_CMDSET_INTEL_STANDARD
:
821 flash_write_cmd(info
, 0, 0, FLASH_CMD_CLEAR_STATUS
);
822 flash_write_cmd(info
, 0, 0, FLASH_CMD_WRITE
);
824 case CFI_CMDSET_AMD_EXTENDED
:
825 case CFI_CMDSET_AMD_STANDARD
:
826 sect
= find_sector(info
, dest
);
827 flash_unlock_seq(info
, sect
);
828 flash_write_cmd(info
, sect
, info
->addr_unlock1
, AMD_CMD_WRITE
);
831 #ifdef CONFIG_FLASH_CFI_LEGACY
832 case CFI_CMDSET_AMD_LEGACY
:
833 sect
= find_sector(info
, dest
);
834 flash_unlock_seq(info
, 0);
835 flash_write_cmd(info
, 0, info
->addr_unlock1
, AMD_CMD_WRITE
);
841 switch (info
->portwidth
) {
843 flash_write8(cword
.w8
, dstaddr
);
845 case FLASH_CFI_16BIT
:
846 flash_write16(cword
.w16
, dstaddr
);
848 case FLASH_CFI_32BIT
:
849 flash_write32(cword
.w32
, dstaddr
);
851 case FLASH_CFI_64BIT
:
852 flash_write64(cword
.w64
, dstaddr
);
856 /* re-enable interrupts if necessary */
861 sect
= find_sector(info
, dest
);
863 if (use_flash_status_poll(info
))
864 return flash_status_poll(info
, &cword
, dstaddr
,
865 info
->write_tout
, "write");
867 return flash_full_status_check(info
, sect
,
868 info
->write_tout
, "write");
871 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
873 static int flash_write_cfibuffer(flash_info_t
*info
, ulong dest
, uchar
*cp
,
880 u8
*dst
= (u8
*)dest
;
887 switch (info
->portwidth
) {
891 case FLASH_CFI_16BIT
:
894 case FLASH_CFI_32BIT
:
897 case FLASH_CFI_64BIT
:
907 while ((cnt
-- > 0) && (flag
== 1)) {
908 switch (info
->portwidth
) {
910 flag
= ((flash_read8(dst2
) & flash_read8(src
)) ==
914 case FLASH_CFI_16BIT
:
915 flag
= ((flash_read16(dst2
) & flash_read16(src
)) ==
919 case FLASH_CFI_32BIT
:
920 flag
= ((flash_read32(dst2
) & flash_read32(src
)) ==
924 case FLASH_CFI_64BIT
:
925 flag
= ((flash_read64(dst2
) & flash_read64(src
)) ==
932 retcode
= ERR_NOT_ERASED
;
937 sector
= find_sector(info
, dest
);
939 switch (info
->vendor
) {
940 case CFI_CMDSET_INTEL_PROG_REGIONS
:
941 case CFI_CMDSET_INTEL_STANDARD
:
942 case CFI_CMDSET_INTEL_EXTENDED
:
943 write_cmd
= (info
->vendor
== CFI_CMDSET_INTEL_PROG_REGIONS
) ?
944 FLASH_CMD_WRITE_BUFFER_PROG
:
945 FLASH_CMD_WRITE_TO_BUFFER
;
946 flash_write_cmd(info
, sector
, 0, FLASH_CMD_CLEAR_STATUS
);
947 flash_write_cmd(info
, sector
, 0, FLASH_CMD_READ_STATUS
);
948 flash_write_cmd(info
, sector
, 0, write_cmd
);
949 retcode
= flash_status_check(info
, sector
,
950 info
->buffer_write_tout
,
952 if (retcode
== ERR_OK
) {
953 /* reduce the number of loops by the width of
957 flash_write_cmd(info
, sector
, 0, cnt
- 1);
959 switch (info
->portwidth
) {
961 flash_write8(flash_read8(src
), dst
);
964 case FLASH_CFI_16BIT
:
965 flash_write16(flash_read16(src
), dst
);
968 case FLASH_CFI_32BIT
:
969 flash_write32(flash_read32(src
), dst
);
972 case FLASH_CFI_64BIT
:
973 flash_write64(flash_read64(src
), dst
);
981 flash_write_cmd(info
, sector
, 0,
982 FLASH_CMD_WRITE_BUFFER_CONFIRM
);
983 retcode
= flash_full_status_check(
984 info
, sector
, info
->buffer_write_tout
,
990 case CFI_CMDSET_AMD_STANDARD
:
991 case CFI_CMDSET_AMD_EXTENDED
:
992 flash_unlock_seq(info
, sector
);
994 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
995 offset
= ((unsigned long)dst
- info
->start
[sector
]) >> shift
;
997 flash_write_cmd(info
, sector
, offset
, AMD_CMD_WRITE_TO_BUFFER
);
999 flash_write_cmd(info
, sector
, offset
, cnt
- 1);
1001 switch (info
->portwidth
) {
1002 case FLASH_CFI_8BIT
:
1004 flash_write8(flash_read8(src
), dst
);
1008 case FLASH_CFI_16BIT
:
1010 flash_write16(flash_read16(src
), dst
);
1014 case FLASH_CFI_32BIT
:
1016 flash_write32(flash_read32(src
), dst
);
1020 case FLASH_CFI_64BIT
:
1022 flash_write64(flash_read64(src
), dst
);
1027 retcode
= ERR_INVAL
;
1031 flash_write_cmd(info
, sector
, 0, AMD_CMD_WRITE_BUFFER_CONFIRM
);
1032 if (use_flash_status_poll(info
))
1033 retcode
= flash_status_poll(info
, src
- (1 << shift
),
1035 info
->buffer_write_tout
,
1038 retcode
= flash_full_status_check(info
, sector
,
1039 info
->buffer_write_tout
,
1044 debug("Unknown Command Set\n");
1045 retcode
= ERR_INVAL
;
1052 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1054 /*-----------------------------------------------------------------------
1056 int flash_erase(flash_info_t
*info
, int s_first
, int s_last
)
1063 if (info
->flash_id
!= FLASH_MAN_CFI
) {
1064 puts("Can't erase unknown flash type - aborted\n");
1067 if (s_first
< 0 || s_first
> s_last
) {
1068 puts("- no sectors to erase\n");
1073 for (sect
= s_first
; sect
<= s_last
; ++sect
)
1074 if (info
->protect
[sect
])
1077 printf("- Warning: %d protected sectors will not be erased!\n",
1079 } else if (flash_verbose
) {
1083 for (sect
= s_first
; sect
<= s_last
; sect
++) {
1089 if (info
->protect
[sect
] == 0) { /* not protected */
1090 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1097 * Check if whole sector is erased
1099 size
= flash_sector_size(info
, sect
);
1101 flash
= (u32
*)info
->start
[sect
];
1102 /* divide by 4 for longword access */
1104 for (k
= 0; k
< size
; k
++) {
1105 if (flash_read32(flash
++) != 0xffffffff) {
1116 switch (info
->vendor
) {
1117 case CFI_CMDSET_INTEL_PROG_REGIONS
:
1118 case CFI_CMDSET_INTEL_STANDARD
:
1119 case CFI_CMDSET_INTEL_EXTENDED
:
1120 flash_write_cmd(info
, sect
, 0,
1121 FLASH_CMD_CLEAR_STATUS
);
1122 flash_write_cmd(info
, sect
, 0,
1123 FLASH_CMD_BLOCK_ERASE
);
1124 flash_write_cmd(info
, sect
, 0,
1125 FLASH_CMD_ERASE_CONFIRM
);
1127 case CFI_CMDSET_AMD_STANDARD
:
1128 case CFI_CMDSET_AMD_EXTENDED
:
1129 flash_unlock_seq(info
, sect
);
1130 flash_write_cmd(info
, sect
,
1132 AMD_CMD_ERASE_START
);
1133 flash_unlock_seq(info
, sect
);
1134 flash_write_cmd(info
, sect
, 0,
1135 info
->cmd_erase_sector
);
1137 #ifdef CONFIG_FLASH_CFI_LEGACY
1138 case CFI_CMDSET_AMD_LEGACY
:
1139 flash_unlock_seq(info
, 0);
1140 flash_write_cmd(info
, 0, info
->addr_unlock1
,
1141 AMD_CMD_ERASE_START
);
1142 flash_unlock_seq(info
, 0);
1143 flash_write_cmd(info
, sect
, 0,
1144 AMD_CMD_ERASE_SECTOR
);
1148 debug("Unknown flash vendor %d\n",
1153 if (use_flash_status_poll(info
)) {
1157 cword
.w64
= 0xffffffffffffffffULL
;
1158 dest
= flash_map(info
, sect
, 0);
1159 st
= flash_status_poll(info
, &cword
, dest
,
1160 info
->erase_blk_tout
,
1162 flash_unmap(info
, sect
, 0, dest
);
1164 st
= flash_full_status_check(info
, sect
,
1165 info
->erase_blk_tout
,
1171 else if (flash_verbose
)
1182 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1183 static int sector_erased(flash_info_t
*info
, int i
)
1190 * Check if whole sector is erased
1192 size
= flash_sector_size(info
, i
);
1193 flash
= (u32
*)info
->start
[i
];
1194 /* divide by 4 for longword access */
1197 for (k
= 0; k
< size
; k
++) {
1198 if (flash_read32(flash
++) != 0xffffffff)
1199 return 0; /* not erased */
1202 return 1; /* erased */
1204 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1206 void flash_print_info(flash_info_t
*info
)
1210 if (info
->flash_id
!= FLASH_MAN_CFI
) {
1211 puts("missing or unknown FLASH type\n");
1215 printf("%s flash (%d x %d)",
1217 (info
->portwidth
<< 3), (info
->chipwidth
<< 3));
1218 if (info
->size
< 1024 * 1024)
1219 printf(" Size: %ld kB in %d Sectors\n",
1220 info
->size
>> 10, info
->sector_count
);
1222 printf(" Size: %ld MB in %d Sectors\n",
1223 info
->size
>> 20, info
->sector_count
);
1225 switch (info
->vendor
) {
1226 case CFI_CMDSET_INTEL_PROG_REGIONS
:
1227 printf("Intel Prog Regions");
1229 case CFI_CMDSET_INTEL_STANDARD
:
1230 printf("Intel Standard");
1232 case CFI_CMDSET_INTEL_EXTENDED
:
1233 printf("Intel Extended");
1235 case CFI_CMDSET_AMD_STANDARD
:
1236 printf("AMD Standard");
1238 case CFI_CMDSET_AMD_EXTENDED
:
1239 printf("AMD Extended");
1241 #ifdef CONFIG_FLASH_CFI_LEGACY
1242 case CFI_CMDSET_AMD_LEGACY
:
1243 printf("AMD Legacy");
1247 printf("Unknown (%d)", info
->vendor
);
1250 printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1251 info
->manufacturer_id
);
1252 printf(info
->chipwidth
== FLASH_CFI_16BIT
? "%04X" : "%02X",
1254 if ((info
->device_id
& 0xff) == 0x7E) {
1255 printf(info
->chipwidth
== FLASH_CFI_16BIT
? "%04X" : "%02X",
1258 if (info
->vendor
== CFI_CMDSET_AMD_STANDARD
&& info
->legacy_unlock
)
1259 printf("\n Advanced Sector Protection (PPB) enabled");
1260 printf("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1261 info
->erase_blk_tout
, info
->write_tout
);
1262 if (info
->buffer_size
> 1) {
1263 printf(" Buffer write timeout: %ld ms, ",
1264 info
->buffer_write_tout
);
1265 printf("buffer size: %d bytes\n", info
->buffer_size
);
1268 puts("\n Sector Start Addresses:");
1269 for (i
= 0; i
< info
->sector_count
; ++i
) {
1274 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1275 /* print empty and read-only info */
1276 printf(" %08lX %c %s ",
1278 sector_erased(info
, i
) ? 'E' : ' ',
1279 info
->protect
[i
] ? "RO" : " ");
1280 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1281 printf(" %08lX %s ",
1283 info
->protect
[i
] ? "RO" : " ");
1289 /*-----------------------------------------------------------------------
1290 * This is used in a few places in write_buf() to show programming
1291 * progress. Making it a function is nasty because it needs to do side
1292 * effect updates to digit and dots. Repeated code is nasty too, so
1293 * we define it once here.
1295 #if CONFIG_FLASH_SHOW_PROGRESS
1296 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1297 if (flash_verbose) { \
1299 if (scale > 0 && dots <= 0) { \
1300 if ((digit % 5) == 0) \
1301 printf("%d", digit / 5); \
1309 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1312 /*-----------------------------------------------------------------------
1313 * Copy memory to flash, returns:
1316 * 2 - Flash not erased
1318 int write_buff(flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
1325 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1328 #if CONFIG_FLASH_SHOW_PROGRESS
1329 int digit
= CONFIG_FLASH_SHOW_PROGRESS
;
1334 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1336 if (cnt
>= CONFIG_FLASH_SHOW_PROGRESS
) {
1337 scale
= (int)((cnt
+ CONFIG_FLASH_SHOW_PROGRESS
- 1) /
1338 CONFIG_FLASH_SHOW_PROGRESS
);
1342 /* get lower aligned address */
1343 wp
= (addr
& ~(info
->portwidth
- 1));
1345 /* handle unaligned start */
1350 for (i
= 0; i
< aln
; ++i
)
1351 flash_add_byte(info
, &cword
, flash_read8(p
+ i
));
1353 for (; (i
< info
->portwidth
) && (cnt
> 0); i
++) {
1354 flash_add_byte(info
, &cword
, *src
++);
1357 for (; (cnt
== 0) && (i
< info
->portwidth
); ++i
)
1358 flash_add_byte(info
, &cword
, flash_read8(p
+ i
));
1360 rc
= flash_write_cfiword(info
, wp
, cword
);
1365 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, i
);
1368 /* handle the aligned part */
1369 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1370 buffered_size
= (info
->portwidth
/ info
->chipwidth
);
1371 buffered_size
*= info
->buffer_size
;
1372 while (cnt
>= info
->portwidth
) {
1373 /* prohibit buffer write when buffer_size is 1 */
1374 if (info
->buffer_size
== 1) {
1376 for (i
= 0; i
< info
->portwidth
; i
++)
1377 flash_add_byte(info
, &cword
, *src
++);
1378 rc
= flash_write_cfiword(info
, wp
, cword
);
1381 wp
+= info
->portwidth
;
1382 cnt
-= info
->portwidth
;
1386 /* write buffer until next buffered_size aligned boundary */
1387 i
= buffered_size
- (wp
% buffered_size
);
1390 rc
= flash_write_cfibuffer(info
, wp
, src
, i
);
1393 i
-= i
& (info
->portwidth
- 1);
1397 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, i
);
1398 /* Only check every once in a while */
1399 if ((cnt
& 0xFFFF) < buffered_size
&& ctrlc())
1403 while (cnt
>= info
->portwidth
) {
1405 for (i
= 0; i
< info
->portwidth
; i
++)
1406 flash_add_byte(info
, &cword
, *src
++);
1407 rc
= flash_write_cfiword(info
, wp
, cword
);
1410 wp
+= info
->portwidth
;
1411 cnt
-= info
->portwidth
;
1412 FLASH_SHOW_PROGRESS(scale
, dots
, digit
, info
->portwidth
);
1413 /* Only check every once in a while */
1414 if ((cnt
& 0xFFFF) < info
->portwidth
&& ctrlc())
1417 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1423 * handle unaligned tail bytes
1427 for (i
= 0; (i
< info
->portwidth
) && (cnt
> 0); ++i
) {
1428 flash_add_byte(info
, &cword
, *src
++);
1431 for (; i
< info
->portwidth
; ++i
)
1432 flash_add_byte(info
, &cword
, flash_read8(p
+ i
));
1434 return flash_write_cfiword(info
, wp
, cword
);
1437 static inline int manufact_match(flash_info_t
*info
, u32 manu
)
1439 return info
->manufacturer_id
== ((manu
& FLASH_VENDMASK
) >> 16);
1442 /*-----------------------------------------------------------------------
1444 #ifdef CONFIG_SYS_FLASH_PROTECTION
1446 static int cfi_protect_bugfix(flash_info_t
*info
, long sector
, int prot
)
1448 if (manufact_match(info
, INTEL_MANUFACT
) &&
1449 info
->device_id
== NUMONYX_256MBIT
) {
1452 * "Numonyx Axcell P33/P30 Specification Update" :)
1454 flash_write_cmd(info
, sector
, 0, FLASH_CMD_READ_ID
);
1455 if (!flash_isequal(info
, sector
, FLASH_OFFSET_PROTECT
,
1458 * cmd must come before FLASH_CMD_PROTECT + 20us
1459 * Disable interrupts which might cause a timeout here.
1461 int flag
= disable_interrupts();
1465 cmd
= FLASH_CMD_PROTECT_SET
;
1467 cmd
= FLASH_CMD_PROTECT_CLEAR
;
1469 flash_write_cmd(info
, sector
, 0, FLASH_CMD_PROTECT
);
1470 flash_write_cmd(info
, sector
, 0, cmd
);
1471 /* re-enable interrupts if necessary */
1473 enable_interrupts();
1480 int flash_real_protect(flash_info_t
*info
, long sector
, int prot
)
1484 switch (info
->vendor
) {
1485 case CFI_CMDSET_INTEL_PROG_REGIONS
:
1486 case CFI_CMDSET_INTEL_STANDARD
:
1487 case CFI_CMDSET_INTEL_EXTENDED
:
1488 if (!cfi_protect_bugfix(info
, sector
, prot
)) {
1489 flash_write_cmd(info
, sector
, 0,
1490 FLASH_CMD_CLEAR_STATUS
);
1491 flash_write_cmd(info
, sector
, 0,
1494 flash_write_cmd(info
, sector
, 0,
1495 FLASH_CMD_PROTECT_SET
);
1497 flash_write_cmd(info
, sector
, 0,
1498 FLASH_CMD_PROTECT_CLEAR
);
1501 case CFI_CMDSET_AMD_EXTENDED
:
1502 case CFI_CMDSET_AMD_STANDARD
:
1503 /* U-Boot only checks the first byte */
1504 if (manufact_match(info
, ATM_MANUFACT
)) {
1506 flash_unlock_seq(info
, 0);
1507 flash_write_cmd(info
, 0,
1509 ATM_CMD_SOFTLOCK_START
);
1510 flash_unlock_seq(info
, 0);
1511 flash_write_cmd(info
, sector
, 0,
1514 flash_write_cmd(info
, 0,
1516 AMD_CMD_UNLOCK_START
);
1517 if (info
->device_id
== ATM_ID_BV6416
)
1518 flash_write_cmd(info
, sector
,
1519 0, ATM_CMD_UNLOCK_SECT
);
1522 if (info
->legacy_unlock
) {
1523 int flag
= disable_interrupts();
1526 flash_unlock_seq(info
, 0);
1527 flash_write_cmd(info
, 0, info
->addr_unlock1
,
1528 AMD_CMD_SET_PPB_ENTRY
);
1529 lock_flag
= flash_isset(info
, sector
, 0, 0x01);
1532 flash_write_cmd(info
, sector
, 0,
1533 AMD_CMD_PPB_LOCK_BC1
);
1534 flash_write_cmd(info
, sector
, 0,
1535 AMD_CMD_PPB_LOCK_BC2
);
1537 debug("sector %ld %slocked\n", sector
,
1538 lock_flag
? "" : "already ");
1541 debug("unlock %ld\n", sector
);
1542 flash_write_cmd(info
, 0, 0,
1543 AMD_CMD_PPB_UNLOCK_BC1
);
1544 flash_write_cmd(info
, 0, 0,
1545 AMD_CMD_PPB_UNLOCK_BC2
);
1547 debug("sector %ld %sunlocked\n", sector
,
1548 !lock_flag
? "" : "already ");
1551 enable_interrupts();
1553 if (flash_status_check(info
, sector
,
1554 info
->erase_blk_tout
,
1555 prot
? "protect" : "unprotect"))
1556 printf("status check error\n");
1558 flash_write_cmd(info
, 0, 0,
1559 AMD_CMD_SET_PPB_EXIT_BC1
);
1560 flash_write_cmd(info
, 0, 0,
1561 AMD_CMD_SET_PPB_EXIT_BC2
);
1564 #ifdef CONFIG_FLASH_CFI_LEGACY
1565 case CFI_CMDSET_AMD_LEGACY
:
1566 flash_write_cmd(info
, sector
, 0, FLASH_CMD_CLEAR_STATUS
);
1567 flash_write_cmd(info
, sector
, 0, FLASH_CMD_PROTECT
);
1569 flash_write_cmd(info
, sector
, 0,
1570 FLASH_CMD_PROTECT_SET
);
1572 flash_write_cmd(info
, sector
, 0,
1573 FLASH_CMD_PROTECT_CLEAR
);
1578 * Flash needs to be in status register read mode for
1579 * flash_full_status_check() to work correctly
1581 flash_write_cmd(info
, sector
, 0, FLASH_CMD_READ_STATUS
);
1582 retcode
= flash_full_status_check(info
, sector
, info
->erase_blk_tout
,
1583 prot
? "protect" : "unprotect");
1585 info
->protect
[sector
] = prot
;
1588 * On some of Intel's flash chips (marked via legacy_unlock)
1589 * unprotect unprotects all locking.
1591 if (prot
== 0 && info
->legacy_unlock
) {
1594 for (i
= 0; i
< info
->sector_count
; i
++) {
1595 if (info
->protect
[i
])
1596 flash_real_protect(info
, i
, 1);
1603 /*-----------------------------------------------------------------------
1604 * flash_read_user_serial - read the OneTimeProgramming cells
1606 void flash_read_user_serial(flash_info_t
*info
, void *buffer
, int offset
,
1613 src
= flash_map(info
, 0, FLASH_OFFSET_USER_PROTECTION
);
1614 flash_write_cmd(info
, 0, 0, FLASH_CMD_READ_ID
);
1615 memcpy(dst
, src
+ offset
, len
);
1616 flash_write_cmd(info
, 0, 0, info
->cmd_reset
);
1618 flash_unmap(info
, 0, FLASH_OFFSET_USER_PROTECTION
, src
);
1622 * flash_read_factory_serial - read the device Id from the protection area
1624 void flash_read_factory_serial(flash_info_t
*info
, void *buffer
, int offset
,
1629 src
= flash_map(info
, 0, FLASH_OFFSET_INTEL_PROTECTION
);
1630 flash_write_cmd(info
, 0, 0, FLASH_CMD_READ_ID
);
1631 memcpy(buffer
, src
+ offset
, len
);
1632 flash_write_cmd(info
, 0, 0, info
->cmd_reset
);
1634 flash_unmap(info
, 0, FLASH_OFFSET_INTEL_PROTECTION
, src
);
1637 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1639 /*-----------------------------------------------------------------------
1640 * Reverse the order of the erase regions in the CFI QRY structure.
1641 * This is needed for chips that are either a) correctly detected as
1642 * top-boot, or b) buggy.
1644 static void cfi_reverse_geometry(struct cfi_qry
*qry
)
1649 for (i
= 0, j
= qry
->num_erase_regions
- 1; i
< j
; i
++, j
--) {
1650 tmp
= get_unaligned(&qry
->erase_region_info
[i
]);
1651 put_unaligned(get_unaligned(&qry
->erase_region_info
[j
]),
1652 &qry
->erase_region_info
[i
]);
1653 put_unaligned(tmp
, &qry
->erase_region_info
[j
]);
1657 /*-----------------------------------------------------------------------
1658 * read jedec ids from device and set corresponding fields in info struct
1660 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1663 static void cmdset_intel_read_jedec_ids(flash_info_t
*info
)
1665 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1667 flash_write_cmd(info
, 0, 0, FLASH_CMD_READ_ID
);
1668 udelay(1000); /* some flash are slow to respond */
1669 info
->manufacturer_id
= flash_read_uchar(info
,
1670 FLASH_OFFSET_MANUFACTURER_ID
);
1671 info
->device_id
= (info
->chipwidth
== FLASH_CFI_16BIT
) ?
1672 flash_read_word(info
, FLASH_OFFSET_DEVICE_ID
) :
1673 flash_read_uchar(info
, FLASH_OFFSET_DEVICE_ID
);
1674 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1677 static int cmdset_intel_init(flash_info_t
*info
, struct cfi_qry
*qry
)
1679 info
->cmd_reset
= FLASH_CMD_RESET
;
1681 cmdset_intel_read_jedec_ids(info
);
1682 flash_write_cmd(info
, 0, info
->cfi_offset
, FLASH_CMD_CFI
);
1684 #ifdef CONFIG_SYS_FLASH_PROTECTION
1685 /* read legacy lock/unlock bit from intel flash */
1686 if (info
->ext_addr
) {
1687 info
->legacy_unlock
=
1688 flash_read_uchar(info
, info
->ext_addr
+ 5) & 0x08;
1695 static void cmdset_amd_read_jedec_ids(flash_info_t
*info
)
1701 flash_write_cmd(info
, 0, 0, AMD_CMD_RESET
);
1702 flash_unlock_seq(info
, 0);
1703 flash_write_cmd(info
, 0, info
->addr_unlock1
, FLASH_CMD_READ_ID
);
1704 udelay(1000); /* some flash are slow to respond */
1706 manu_id
= flash_read_uchar(info
, FLASH_OFFSET_MANUFACTURER_ID
);
1707 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1708 while (manu_id
== FLASH_CONTINUATION_CODE
&& bank_id
< 0x800) {
1710 manu_id
= flash_read_uchar(info
,
1711 bank_id
| FLASH_OFFSET_MANUFACTURER_ID
);
1713 info
->manufacturer_id
= manu_id
;
1715 debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1716 info
->ext_addr
, info
->cfi_version
);
1717 if (info
->ext_addr
&& info
->cfi_version
>= 0x3134) {
1718 /* read software feature (at 0x53) */
1719 feature
= flash_read_uchar(info
, info
->ext_addr
+ 0x13);
1720 debug("feature = 0x%x\n", feature
);
1721 info
->sr_supported
= feature
& 0x1;
1724 switch (info
->chipwidth
) {
1725 case FLASH_CFI_8BIT
:
1726 info
->device_id
= flash_read_uchar(info
,
1727 FLASH_OFFSET_DEVICE_ID
);
1728 if (info
->device_id
== 0x7E) {
1729 /* AMD 3-byte (expanded) device ids */
1730 info
->device_id2
= flash_read_uchar(info
,
1731 FLASH_OFFSET_DEVICE_ID2
);
1732 info
->device_id2
<<= 8;
1733 info
->device_id2
|= flash_read_uchar(info
,
1734 FLASH_OFFSET_DEVICE_ID3
);
1737 case FLASH_CFI_16BIT
:
1738 info
->device_id
= flash_read_word(info
,
1739 FLASH_OFFSET_DEVICE_ID
);
1740 if ((info
->device_id
& 0xff) == 0x7E) {
1741 /* AMD 3-byte (expanded) device ids */
1742 info
->device_id2
= flash_read_uchar(info
,
1743 FLASH_OFFSET_DEVICE_ID2
);
1744 info
->device_id2
<<= 8;
1745 info
->device_id2
|= flash_read_uchar(info
,
1746 FLASH_OFFSET_DEVICE_ID3
);
1752 flash_write_cmd(info
, 0, 0, AMD_CMD_RESET
);
1756 static int cmdset_amd_init(flash_info_t
*info
, struct cfi_qry
*qry
)
1758 info
->cmd_reset
= AMD_CMD_RESET
;
1759 info
->cmd_erase_sector
= AMD_CMD_ERASE_SECTOR
;
1761 cmdset_amd_read_jedec_ids(info
);
1762 flash_write_cmd(info
, 0, info
->cfi_offset
, FLASH_CMD_CFI
);
1764 #ifdef CONFIG_SYS_FLASH_PROTECTION
1765 if (info
->ext_addr
) {
1766 /* read sector protect/unprotect scheme (at 0x49) */
1767 if (flash_read_uchar(info
, info
->ext_addr
+ 9) == 0x8)
1768 info
->legacy_unlock
= 1;
1775 #ifdef CONFIG_FLASH_CFI_LEGACY
1776 static void flash_read_jedec_ids(flash_info_t
*info
)
1778 info
->manufacturer_id
= 0;
1779 info
->device_id
= 0;
1780 info
->device_id2
= 0;
1782 switch (info
->vendor
) {
1783 case CFI_CMDSET_INTEL_PROG_REGIONS
:
1784 case CFI_CMDSET_INTEL_STANDARD
:
1785 case CFI_CMDSET_INTEL_EXTENDED
:
1786 cmdset_intel_read_jedec_ids(info
);
1788 case CFI_CMDSET_AMD_STANDARD
:
1789 case CFI_CMDSET_AMD_EXTENDED
:
1790 cmdset_amd_read_jedec_ids(info
);
1797 /*-----------------------------------------------------------------------
1798 * Call board code to request info about non-CFI flash.
1799 * board_flash_get_legacy needs to fill in at least:
1800 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1802 static int flash_detect_legacy(phys_addr_t base
, int banknum
)
1804 flash_info_t
*info
= &flash_info
[banknum
];
1806 if (board_flash_get_legacy(base
, banknum
, info
)) {
1807 /* board code may have filled info completely. If not, we
1808 * use JEDEC ID probing.
1810 if (!info
->vendor
) {
1812 CFI_CMDSET_AMD_STANDARD
,
1813 CFI_CMDSET_INTEL_STANDARD
1817 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1818 info
->vendor
= modes
[i
];
1820 (ulong
)map_physmem(base
,
1823 if (info
->portwidth
== FLASH_CFI_8BIT
&&
1824 info
->interface
== FLASH_CFI_X8X16
) {
1825 info
->addr_unlock1
= 0x2AAA;
1826 info
->addr_unlock2
= 0x5555;
1828 info
->addr_unlock1
= 0x5555;
1829 info
->addr_unlock2
= 0x2AAA;
1831 flash_read_jedec_ids(info
);
1832 debug("JEDEC PROBE: ID %x %x %x\n",
1833 info
->manufacturer_id
,
1836 if (jedec_flash_match(info
, info
->start
[0]))
1839 unmap_physmem((void *)info
->start
[0],
1844 switch (info
->vendor
) {
1845 case CFI_CMDSET_INTEL_PROG_REGIONS
:
1846 case CFI_CMDSET_INTEL_STANDARD
:
1847 case CFI_CMDSET_INTEL_EXTENDED
:
1848 info
->cmd_reset
= FLASH_CMD_RESET
;
1850 case CFI_CMDSET_AMD_STANDARD
:
1851 case CFI_CMDSET_AMD_EXTENDED
:
1852 case CFI_CMDSET_AMD_LEGACY
:
1853 info
->cmd_reset
= AMD_CMD_RESET
;
1856 info
->flash_id
= FLASH_MAN_CFI
;
1859 return 0; /* use CFI */
1862 static inline int flash_detect_legacy(phys_addr_t base
, int banknum
)
1864 return 0; /* use CFI */
1868 /*-----------------------------------------------------------------------
1869 * detect if flash is compatible with the Common Flash Interface (CFI)
1870 * http://www.jedec.org/download/search/jesd68.pdf
1872 static void flash_read_cfi(flash_info_t
*info
, void *buf
, unsigned int start
,
1878 for (i
= 0; i
< len
; i
++)
1879 p
[i
] = flash_read_uchar(info
, start
+ i
);
1882 static void __flash_cmd_reset(flash_info_t
*info
)
1885 * We do not yet know what kind of commandset to use, so we issue
1886 * the reset command in both Intel and AMD variants, in the hope
1887 * that AMD flash roms ignore the Intel command.
1889 flash_write_cmd(info
, 0, 0, AMD_CMD_RESET
);
1891 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
1894 void flash_cmd_reset(flash_info_t
*info
)
1895 __attribute__((weak
, alias("__flash_cmd_reset")));
1897 static int __flash_detect_cfi(flash_info_t
*info
, struct cfi_qry
*qry
)
1901 /* Issue FLASH reset command */
1902 flash_cmd_reset(info
);
1904 for (cfi_offset
= 0; cfi_offset
< ARRAY_SIZE(flash_offset_cfi
);
1906 flash_write_cmd(info
, 0, flash_offset_cfi
[cfi_offset
],
1908 if (flash_isequal(info
, 0, FLASH_OFFSET_CFI_RESP
, 'Q') &&
1909 flash_isequal(info
, 0, FLASH_OFFSET_CFI_RESP
+ 1, 'R') &&
1910 flash_isequal(info
, 0, FLASH_OFFSET_CFI_RESP
+ 2, 'Y')) {
1911 flash_read_cfi(info
, qry
, FLASH_OFFSET_CFI_RESP
,
1912 sizeof(struct cfi_qry
));
1913 info
->interface
= le16_to_cpu(qry
->interface_desc
);
1914 /* Some flash chips can support multiple bus widths.
1915 * In this case, override the interface width and
1916 * limit it to the port width.
1918 if ((info
->interface
== FLASH_CFI_X8X16
) &&
1919 (info
->portwidth
== FLASH_CFI_8BIT
)) {
1920 debug("Overriding 16-bit interface width to"
1921 " 8-bit port width\n");
1922 info
->interface
= FLASH_CFI_X8
;
1923 } else if ((info
->interface
== FLASH_CFI_X16X32
) &&
1924 (info
->portwidth
== FLASH_CFI_16BIT
)) {
1925 debug("Overriding 16-bit interface width to"
1926 " 16-bit port width\n");
1927 info
->interface
= FLASH_CFI_X16
;
1930 info
->cfi_offset
= flash_offset_cfi
[cfi_offset
];
1931 debug("device interface is %d\n",
1933 debug("found port %d chip %d chip_lsb %d ",
1934 info
->portwidth
, info
->chipwidth
, info
->chip_lsb
);
1935 debug("port %d bits chip %d bits\n",
1936 info
->portwidth
<< CFI_FLASH_SHIFT_WIDTH
,
1937 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
1939 /* calculate command offsets as in the Linux driver */
1940 info
->addr_unlock1
= 0x555;
1941 info
->addr_unlock2
= 0x2aa;
1944 * modify the unlock address if we are
1945 * in compatibility mode
1947 if (/* x8/x16 in x8 mode */
1948 (info
->chipwidth
== FLASH_CFI_BY8
&&
1949 info
->interface
== FLASH_CFI_X8X16
) ||
1950 /* x16/x32 in x16 mode */
1951 (info
->chipwidth
== FLASH_CFI_BY16
&&
1952 info
->interface
== FLASH_CFI_X16X32
)) {
1953 info
->addr_unlock1
= 0xaaa;
1954 info
->addr_unlock2
= 0x555;
1957 info
->name
= "CFI conformant";
1965 static int flash_detect_cfi(flash_info_t
*info
, struct cfi_qry
*qry
)
1967 debug("flash detect cfi\n");
1969 for (info
->portwidth
= CONFIG_SYS_FLASH_CFI_WIDTH
;
1970 info
->portwidth
<= FLASH_CFI_64BIT
; info
->portwidth
<<= 1) {
1971 for (info
->chipwidth
= FLASH_CFI_BY8
;
1972 info
->chipwidth
<= info
->portwidth
;
1973 info
->chipwidth
<<= 1) {
1975 * First, try detection without shifting the addresses
1976 * for 8bit devices (16bit wide connection)
1979 if (__flash_detect_cfi(info
, qry
))
1983 * Not detected, so let's try with shifting
1987 if (__flash_detect_cfi(info
, qry
))
1991 debug("not found\n");
1996 * Manufacturer-specific quirks. Add workarounds for geometry
1997 * reversal, etc. here.
1999 static void flash_fixup_amd(flash_info_t
*info
, struct cfi_qry
*qry
)
2001 /* check if flash geometry needs reversal */
2002 if (qry
->num_erase_regions
> 1) {
2003 /* reverse geometry if top boot part */
2004 if (info
->cfi_version
< 0x3131) {
2005 /* CFI < 1.1, try to guess from device id */
2006 if ((info
->device_id
& 0x80) != 0)
2007 cfi_reverse_geometry(qry
);
2008 } else if (flash_read_uchar(info
, info
->ext_addr
+ 0xf) == 3) {
2009 /* CFI >= 1.1, deduct from top/bottom flag */
2010 /* note: ext_addr is valid since cfi_version > 0 */
2011 cfi_reverse_geometry(qry
);
2016 static void flash_fixup_atmel(flash_info_t
*info
, struct cfi_qry
*qry
)
2018 int reverse_geometry
= 0;
2020 /* Check the "top boot" bit in the PRI */
2021 if (info
->ext_addr
&& !(flash_read_uchar(info
, info
->ext_addr
+ 6) & 1))
2022 reverse_geometry
= 1;
2024 /* AT49BV6416(T) list the erase regions in the wrong order.
2025 * However, the device ID is identical with the non-broken
2026 * AT49BV642D they differ in the high byte.
2028 if (info
->device_id
== 0xd6 || info
->device_id
== 0xd2)
2029 reverse_geometry
= !reverse_geometry
;
2031 if (reverse_geometry
)
2032 cfi_reverse_geometry(qry
);
2035 static void flash_fixup_stm(flash_info_t
*info
, struct cfi_qry
*qry
)
2037 /* check if flash geometry needs reversal */
2038 if (qry
->num_erase_regions
> 1) {
2039 /* reverse geometry if top boot part */
2040 if (info
->cfi_version
< 0x3131) {
2041 /* CFI < 1.1, guess by device id */
2042 if (info
->device_id
== 0x22CA || /* M29W320DT */
2043 info
->device_id
== 0x2256 || /* M29W320ET */
2044 info
->device_id
== 0x22D7) { /* M29W800DT */
2045 cfi_reverse_geometry(qry
);
2047 } else if (flash_read_uchar(info
, info
->ext_addr
+ 0xf) == 3) {
2048 /* CFI >= 1.1, deduct from top/bottom flag */
2049 /* note: ext_addr is valid since cfi_version > 0 */
2050 cfi_reverse_geometry(qry
);
2055 static void flash_fixup_sst(flash_info_t
*info
, struct cfi_qry
*qry
)
2058 * SST, for many recent nor parallel flashes, says they are
2059 * CFI-conformant. This is not true, since qry struct.
2060 * reports a std. AMD command set (0x0002), while SST allows to
2061 * erase two different sector sizes for the same memory.
2062 * 64KB sector (SST call it block) needs 0x30 to be erased.
2063 * 4KB sector (SST call it sector) needs 0x50 to be erased.
2064 * Since CFI query detect the 4KB number of sectors, users expects
2065 * a sector granularity of 4KB, and it is here set.
2067 if (info
->device_id
== 0x5D23 || /* SST39VF3201B */
2068 info
->device_id
== 0x5C23) { /* SST39VF3202B */
2069 /* set sector granularity to 4KB */
2070 info
->cmd_erase_sector
= 0x50;
2074 static void flash_fixup_num(flash_info_t
*info
, struct cfi_qry
*qry
)
2077 * The M29EW devices seem to report the CFI information wrong
2078 * when it's in 8 bit mode.
2079 * There's an app note from Numonyx on this issue.
2080 * So adjust the buffer size for M29EW while operating in 8-bit mode
2082 if (qry
->max_buf_write_size
> 0x8 &&
2083 info
->device_id
== 0x7E &&
2084 (info
->device_id2
== 0x2201 ||
2085 info
->device_id2
== 0x2301 ||
2086 info
->device_id2
== 0x2801 ||
2087 info
->device_id2
== 0x4801)) {
2088 debug("Adjusted buffer size on Numonyx flash");
2089 debug(" M29EW family in 8 bit mode\n");
2090 qry
->max_buf_write_size
= 0x8;
2095 * The following code cannot be run from FLASH!
2098 ulong
flash_get_size(phys_addr_t base
, int banknum
)
2100 flash_info_t
*info
= &flash_info
[banknum
];
2102 flash_sect_t sect_cnt
;
2106 uchar num_erase_regions
;
2107 int erase_region_size
;
2108 int erase_region_count
;
2110 unsigned long max_size
;
2112 memset(&qry
, 0, sizeof(qry
));
2115 info
->cfi_version
= 0;
2116 #ifdef CONFIG_SYS_FLASH_PROTECTION
2117 info
->legacy_unlock
= 0;
2120 info
->start
[0] = (ulong
)map_physmem(base
, info
->portwidth
, MAP_NOCACHE
);
2122 if (flash_detect_cfi(info
, &qry
)) {
2123 info
->vendor
= le16_to_cpu(get_unaligned(&qry
.p_id
));
2124 info
->ext_addr
= le16_to_cpu(get_unaligned(&qry
.p_adr
));
2125 num_erase_regions
= qry
.num_erase_regions
;
2127 if (info
->ext_addr
) {
2128 info
->cfi_version
= (ushort
)flash_read_uchar(info
,
2129 info
->ext_addr
+ 3) << 8;
2130 info
->cfi_version
|= (ushort
)flash_read_uchar(info
,
2131 info
->ext_addr
+ 4);
2135 flash_printqry(&qry
);
2138 switch (info
->vendor
) {
2139 case CFI_CMDSET_INTEL_PROG_REGIONS
:
2140 case CFI_CMDSET_INTEL_STANDARD
:
2141 case CFI_CMDSET_INTEL_EXTENDED
:
2142 cmdset_intel_init(info
, &qry
);
2144 case CFI_CMDSET_AMD_STANDARD
:
2145 case CFI_CMDSET_AMD_EXTENDED
:
2146 cmdset_amd_init(info
, &qry
);
2149 printf("CFI: Unknown command set 0x%x\n",
2152 * Unfortunately, this means we don't know how
2153 * to get the chip back to Read mode. Might
2154 * as well try an Intel-style reset...
2156 flash_write_cmd(info
, 0, 0, FLASH_CMD_RESET
);
2160 /* Do manufacturer-specific fixups */
2161 switch (info
->manufacturer_id
) {
2162 case 0x0001: /* AMD */
2163 case 0x0037: /* AMIC */
2164 flash_fixup_amd(info
, &qry
);
2167 flash_fixup_atmel(info
, &qry
);
2170 flash_fixup_stm(info
, &qry
);
2172 case 0x00bf: /* SST */
2173 flash_fixup_sst(info
, &qry
);
2175 case 0x0089: /* Numonyx */
2176 flash_fixup_num(info
, &qry
);
2180 debug("manufacturer is %d\n", info
->vendor
);
2181 debug("manufacturer id is 0x%x\n", info
->manufacturer_id
);
2182 debug("device id is 0x%x\n", info
->device_id
);
2183 debug("device id2 is 0x%x\n", info
->device_id2
);
2184 debug("cfi version is 0x%04x\n", info
->cfi_version
);
2186 size_ratio
= info
->portwidth
/ info
->chipwidth
;
2187 /* if the chip is x8/x16 reduce the ratio by half */
2188 if (info
->interface
== FLASH_CFI_X8X16
&&
2189 info
->chipwidth
== FLASH_CFI_BY8
) {
2192 debug("size_ratio %d port %d bits chip %d bits\n",
2193 size_ratio
, info
->portwidth
<< CFI_FLASH_SHIFT_WIDTH
,
2194 info
->chipwidth
<< CFI_FLASH_SHIFT_WIDTH
);
2195 info
->size
= 1 << qry
.dev_size
;
2196 /* multiply the size by the number of chips */
2197 info
->size
*= size_ratio
;
2198 max_size
= cfi_flash_bank_size(banknum
);
2199 #ifdef CONFIG_CFI_FLASH
2201 max_size
= min((unsigned long)info
->addr_size
, max_size
);
2203 max_size
= info
->addr_size
;
2205 if (max_size
&& info
->size
> max_size
) {
2206 debug("[truncated from %ldMiB]", info
->size
>> 20);
2207 info
->size
= max_size
;
2209 debug("found %d erase regions\n", num_erase_regions
);
2212 for (i
= 0; i
< num_erase_regions
; i
++) {
2213 if (i
> NUM_ERASE_REGIONS
) {
2214 printf("%d erase regions found, only %d used\n",
2215 num_erase_regions
, NUM_ERASE_REGIONS
);
2219 tmp
= le32_to_cpu(get_unaligned(
2220 &qry
.erase_region_info
[i
]));
2221 debug("erase region %u: 0x%08lx\n", i
, tmp
);
2223 erase_region_count
= (tmp
& 0xffff) + 1;
2226 (tmp
& 0xffff) ? ((tmp
& 0xffff) * 256) : 128;
2227 debug("erase_region_count = %d ", erase_region_count
);
2228 debug("erase_region_size = %d\n", erase_region_size
);
2229 for (j
= 0; j
< erase_region_count
; j
++) {
2230 if (sector
- base
>= info
->size
)
2232 if (sect_cnt
>= CONFIG_SYS_MAX_FLASH_SECT
) {
2233 printf("ERROR: too many flash sectors\n");
2236 info
->start
[sect_cnt
] =
2237 (ulong
)map_physmem(sector
,
2240 sector
+= (erase_region_size
* size_ratio
);
2243 * Only read protection status from
2244 * supported devices (intel...)
2246 switch (info
->vendor
) {
2247 case CFI_CMDSET_INTEL_PROG_REGIONS
:
2248 case CFI_CMDSET_INTEL_EXTENDED
:
2249 case CFI_CMDSET_INTEL_STANDARD
:
2251 * Set flash to read-id mode. Otherwise
2252 * reading protected status is not
2255 flash_write_cmd(info
, sect_cnt
, 0,
2257 info
->protect
[sect_cnt
] =
2258 flash_isset(info
, sect_cnt
,
2259 FLASH_OFFSET_PROTECT
,
2260 FLASH_STATUS_PROTECT
);
2261 flash_write_cmd(info
, sect_cnt
, 0,
2264 case CFI_CMDSET_AMD_EXTENDED
:
2265 case CFI_CMDSET_AMD_STANDARD
:
2266 if (!info
->legacy_unlock
) {
2267 /* default: not protected */
2268 info
->protect
[sect_cnt
] = 0;
2272 /* Read protection (PPB) from sector */
2273 flash_write_cmd(info
, 0, 0,
2275 flash_unlock_seq(info
, 0);
2276 flash_write_cmd(info
, 0,
2278 AMD_CMD_SET_PPB_ENTRY
);
2279 info
->protect
[sect_cnt
] =
2280 !flash_isset(info
, sect_cnt
,
2282 flash_write_cmd(info
, 0, 0,
2286 /* default: not protected */
2287 info
->protect
[sect_cnt
] = 0;
2294 info
->sector_count
= sect_cnt
;
2295 info
->buffer_size
= 1 << le16_to_cpu(qry
.max_buf_write_size
);
2296 tmp
= 1 << qry
.block_erase_timeout_typ
;
2297 info
->erase_blk_tout
= tmp
*
2298 (1 << qry
.block_erase_timeout_max
);
2299 tmp
= (1 << qry
.buf_write_timeout_typ
) *
2300 (1 << qry
.buf_write_timeout_max
);
2302 /* round up when converting to ms */
2303 info
->buffer_write_tout
= (tmp
+ 999) / 1000;
2304 tmp
= (1 << qry
.word_write_timeout_typ
) *
2305 (1 << qry
.word_write_timeout_max
);
2306 /* round up when converting to ms */
2307 info
->write_tout
= (tmp
+ 999) / 1000;
2308 info
->flash_id
= FLASH_MAN_CFI
;
2309 if (info
->interface
== FLASH_CFI_X8X16
&&
2310 info
->chipwidth
== FLASH_CFI_BY8
) {
2311 /* XXX - Need to test on x8/x16 in parallel. */
2312 info
->portwidth
>>= 1;
2315 flash_write_cmd(info
, 0, 0, info
->cmd_reset
);
2318 return (info
->size
);
2321 #ifdef CONFIG_FLASH_CFI_MTD
2322 void flash_set_verbose(uint v
)
2328 static void cfi_flash_set_config_reg(u32 base
, u16 val
)
2330 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2332 * Only set this config register if really defined
2333 * to a valid value (0xffff is invalid)
2339 * Set configuration register. Data is "encrypted" in the 16 lower
2342 flash_write16(FLASH_CMD_SETUP
, (void *)(base
+ (val
<< 1)));
2343 flash_write16(FLASH_CMD_SET_CR_CONFIRM
, (void *)(base
+ (val
<< 1)));
2346 * Finally issue reset-command to bring device back to
2349 flash_write16(FLASH_CMD_RESET
, (void *)base
);
2353 /*-----------------------------------------------------------------------
2356 static void flash_protect_default(void)
2358 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2363 } apl
[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST
;
2366 /* Monitor protection ON by default */
2367 #if defined(CONFIG_SYS_MONITOR_BASE) && \
2368 (CONFIG_SYS_MONITOR_BASE >= CFG_SYS_FLASH_BASE) && \
2369 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2370 flash_protect(FLAG_PROTECT_SET
,
2371 CONFIG_SYS_MONITOR_BASE
,
2372 CONFIG_SYS_MONITOR_BASE
+ monitor_flash_len
- 1,
2373 flash_get_info(CONFIG_SYS_MONITOR_BASE
));
2376 /* Environment protection ON by default */
2377 #ifdef CONFIG_ENV_IS_IN_FLASH
2378 flash_protect(FLAG_PROTECT_SET
,
2380 CONFIG_ENV_ADDR
+ CONFIG_ENV_SECT_SIZE
- 1,
2381 flash_get_info(CONFIG_ENV_ADDR
));
2384 /* Redundant environment protection ON by default */
2385 #ifdef CONFIG_ENV_ADDR_REDUND
2386 flash_protect(FLAG_PROTECT_SET
,
2387 CONFIG_ENV_ADDR_REDUND
,
2388 CONFIG_ENV_ADDR_REDUND
+ CONFIG_ENV_SECT_SIZE
- 1,
2389 flash_get_info(CONFIG_ENV_ADDR_REDUND
));
2392 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2393 for (i
= 0; i
< ARRAY_SIZE(apl
); i
++) {
2394 debug("autoprotecting from %08lx to %08lx\n",
2395 apl
[i
].start
, apl
[i
].start
+ apl
[i
].size
- 1);
2396 flash_protect(FLAG_PROTECT_SET
,
2398 apl
[i
].start
+ apl
[i
].size
- 1,
2399 flash_get_info(apl
[i
].start
));
2404 unsigned long flash_init(void)
2406 unsigned long size
= 0;
2409 #ifdef CONFIG_SYS_FLASH_PROTECTION
2410 /* read environment from EEPROM */
2413 env_get_f("unlock", s
, sizeof(s
));
2416 #ifdef CONFIG_CFI_FLASH /* for driver model */
2417 cfi_flash_init_dm();
2420 /* Init: no FLASHes known */
2421 for (i
= 0; i
< CFI_FLASH_BANKS
; ++i
) {
2422 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
2424 /* Optionally write flash configuration register */
2425 cfi_flash_set_config_reg(cfi_flash_bank_addr(i
),
2426 cfi_flash_config_reg(i
));
2428 if (!flash_detect_legacy(cfi_flash_bank_addr(i
), i
))
2429 flash_get_size(cfi_flash_bank_addr(i
), i
);
2430 size
+= flash_info
[i
].size
;
2431 if (flash_info
[i
].flash_id
== FLASH_UNKNOWN
) {
2432 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2433 printf("## Unknown flash on Bank %d ", i
+ 1);
2434 printf("- Size = 0x%08lx = %ld MB\n",
2436 flash_info
[i
].size
>> 20);
2437 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2439 #ifdef CONFIG_SYS_FLASH_PROTECTION
2440 else if (strcmp(s
, "yes") == 0) {
2442 * Only the U-Boot image and it's environment
2443 * is protected, all other sectors are
2444 * unprotected (unlocked) if flash hardware
2445 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2446 * and the environment variable "unlock" is
2449 if (flash_info
[i
].legacy_unlock
) {
2453 * Disable legacy_unlock temporarily,
2454 * since flash_real_protect would
2455 * relock all other sectors again
2458 flash_info
[i
].legacy_unlock
= 0;
2461 * Legacy unlocking (e.g. Intel J3) ->
2462 * unlock only one sector. This will
2463 * unlock all sectors.
2465 flash_real_protect(&flash_info
[i
], 0, 0);
2467 flash_info
[i
].legacy_unlock
= 1;
2470 * Manually mark other sectors as
2471 * unlocked (unprotected)
2473 for (k
= 1; k
< flash_info
[i
].sector_count
; k
++)
2474 flash_info
[i
].protect
[k
] = 0;
2477 * No legancy unlocking -> unlock all sectors
2479 flash_protect(FLAG_PROTECT_CLEAR
,
2480 flash_info
[i
].start
[0],
2481 flash_info
[i
].start
[0]
2482 + flash_info
[i
].size
- 1,
2486 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2489 flash_protect_default();
2490 #ifdef CONFIG_FLASH_CFI_MTD
2497 #ifdef CONFIG_CFI_FLASH /* for driver model */
2498 static int cfi_flash_probe(struct udevice
*dev
)
2504 for (idx
= 0; idx
< CFI_MAX_FLASH_BANKS
; idx
++) {
2505 addr
= dev_read_addr_size_index(dev
, idx
, &size
);
2506 if (addr
== FDT_ADDR_T_NONE
)
2509 flash_info
[cfi_flash_num_flash_banks
].dev
= dev
;
2510 flash_info
[cfi_flash_num_flash_banks
].base
= addr
;
2511 flash_info
[cfi_flash_num_flash_banks
].addr_size
= size
;
2512 cfi_flash_num_flash_banks
++;
2514 gd
->bd
->bi_flashstart
= flash_info
[0].base
;
2519 static const struct udevice_id cfi_flash_ids
[] = {
2520 { .compatible
= "cfi-flash" },
2521 { .compatible
= "jedec-flash" },
2525 U_BOOT_DRIVER(cfi_flash
) = {
2526 .name
= "cfi_flash",
2528 .of_match
= cfi_flash_ids
,
2529 .probe
= cfi_flash_probe
,
2531 #endif /* CONFIG_CFI_FLASH */