]>
git.ipfire.org Git - people/ms/u-boot.git/blob - board/mpl/common/flash.c
2 * (C) Copyright 2000, 2001
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 * Wait for completion of each sector erase command issued
28 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
33 * - adapted for pip405, Denis Peter, MPL AG Switzerland
40 #include <asm/processor.h>
41 #include "common_util.h"
42 #if defined(CONFIG_MIP405)
43 #include "../mip405/mip405.h"
45 #if defined(CONFIG_PIP405)
46 #include "../pip405/pip405.h"
48 #include <405gp_pci.h>
50 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* info for FLASH chips */
51 /*-----------------------------------------------------------------------
54 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
);
55 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
);
57 void unlock_intel_sectors(flash_info_t
*info
,ulong addr
,ulong cnt
);
63 #define FLASH_WORD_SIZE unsigned short
69 #define FLASH_WORD_SIZE unsigned short
75 /*-----------------------------------------------------------------------
76 * Some CS switching routines:
78 * On PIP/MIP405 we have 3 (4) possible boot mode
80 * - Boot from Flash (Flash CS = CS0, MPS CS = CS1)
81 * - Boot from MPS (Flash CS = CS1, MPS CS = CS0)
82 * - Boot from PCI with Flash map (Flash CS = CS0, MPS CS = CS1)
83 * - Boot from PCI with MPS map (Flash CS = CS1, MPS CS = CS0)
84 * The flash init is the first board specific routine which is called
85 * after code relocation (running from SDRAM)
86 * The first thing we do is to map the Flash CS to the Flash area and
87 * the MPS CS to the MPS area. Since the flash size is unknown at this
88 * point, we use the max flash size and the lowest flash address as base.
90 * After flash detection we adjust the size of the CS area accordingly.
91 * The board_init_r will fill in wrong values in the board init structure,
92 * but this will be fixed in the misc_init_r routine:
93 * bd->bi_flashstart=0-flash_info[0].size
94 * bd->bi_flashsize=flash_info[0].size-CFG_MONITOR_LEN
95 * bd->bi_flashoffset=0
98 int get_boot_mode(void)
102 pbcr
= mfdcr (strap
);
103 if ((pbcr
& PSR_ROM_WIDTH_MASK
) == 0)
104 /* boot via MPS or MPS mapping */
106 if(pbcr
& PSR_ROM_LOC
)
112 /* Map the flash high (in boot area)
113 This code can only be executed from SDRAM (after relocation).
115 void setup_cs_reloc(void)
118 /* Since we are relocated, we can set-up the CS finaly
119 * but first of all, switch off PCI mapping (in case it was a PCI boot) */
121 icache_enable (); /* we are relocated */
123 mode
=get_boot_mode();
124 /* we map the flash high in every case */
125 /* first findout on which cs the flash is */
126 if(mode
& BOOT_MPS
) {
127 /* map flash high on CS1 and MPS on CS0 */
128 mtdcr (ebccfga
, pb0ap
);
129 mtdcr (ebccfgd
, MPS_AP
);
130 mtdcr (ebccfga
, pb0cr
);
131 mtdcr (ebccfgd
, MPS_CR
);
132 /* we use the default values (max values) for the flash
133 * because its real size is not yet known */
134 mtdcr (ebccfga
, pb1ap
);
135 mtdcr (ebccfgd
, FLASH_AP
);
136 mtdcr (ebccfga
, pb1cr
);
137 mtdcr (ebccfgd
, FLASH_CR_B
);
140 /* map flash high on CS0 and MPS on CS1 */
141 mtdcr (ebccfga
, pb1ap
);
142 mtdcr (ebccfgd
, MPS_AP
);
143 mtdcr (ebccfga
, pb1cr
);
144 mtdcr (ebccfgd
, MPS_CR
);
145 /* we use the default values (max values) for the flash
146 * because its real size is not yet known */
147 mtdcr (ebccfga
, pb0ap
);
148 mtdcr (ebccfgd
, FLASH_AP
);
149 mtdcr (ebccfga
, pb0cr
);
150 mtdcr (ebccfgd
, FLASH_CR_B
);
156 unsigned long flash_init (void)
158 unsigned long size_b0
, size_b1
,flashcr
, size_reg
;
160 extern char version_string
;
161 char *p
=&version_string
;
163 /* Since we are relocated, we can set-up the CS finally */
165 /* get and display boot mode */
166 mode
=get_boot_mode();
168 printf("(PCI Boot %s Map) ",(mode
& BOOT_MPS
) ?
171 printf("(%s Boot) ",(mode
& BOOT_MPS
) ?
173 /* Init: no FLASHes known */
174 for (i
=0; i
<CFG_MAX_FLASH_BANKS
; ++i
) {
175 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
178 /* Static FLASH Bank configuration here - FIXME XXX */
180 size_b0
= flash_get_size((vu_long
*)CFG_MONITOR_BASE
, &flash_info
[0]);
182 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
183 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
184 size_b0
, size_b0
<<20);
186 /* protect the bootloader */
187 /* Monitor protection ON by default */
188 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
189 flash_protect(FLAG_PROTECT_SET
,
191 CFG_MONITOR_BASE
+monitor_flash_len
-1,
194 /* protect reset vector */
195 flash_info
[0].protect
[flash_info
[0].sector_count
-1] = 1;
197 flash_info
[0].size
= size_b0
;
198 /* set up flash cs according to the size */
199 size_reg
=(flash_info
[0].size
>>20);
202 case 1: i
=0; break; /* <= 1MB */
203 case 2: i
=1; break; /* = 2MB */
204 case 4: i
=2; break; /* = 4MB */
205 case 8: i
=3; break; /* = 8MB */
206 case 16: i
=4; break; /* = 16MB */
207 case 32: i
=5; break; /* = 32MB */
208 case 64: i
=6; break; /* = 64MB */
209 case 128: i
=7; break; /*= 128MB */
211 printf("\n #### ERROR, wrong size %ld MByte reset board #####\n",size_reg
);
214 if(mode
& BOOT_MPS
) {
215 /* flash is on CS1 */
216 mtdcr(ebccfga
, pb1cr
);
217 flashcr
= mfdcr (ebccfgd
);
218 /* we map the flash high in every case */
219 flashcr
&=0x0001FFFF; /* mask out address bits */
220 flashcr
|= ((0-flash_info
[0].size
) & 0xFFF00000); /* start addr */
221 flashcr
|= (i
<< 17); /* size addr */
222 mtdcr(ebccfga
, pb1cr
);
223 mtdcr(ebccfgd
, flashcr
);
226 /* flash is on CS0 */
227 mtdcr(ebccfga
, pb0cr
);
228 flashcr
= mfdcr (ebccfgd
);
229 /* we map the flash high in every case */
230 flashcr
&=0x0001FFFF; /* mask out address bits */
231 flashcr
|= ((0-flash_info
[0].size
) & 0xFFF00000); /* start addr */
232 flashcr
|= (i
<< 17); /* size addr */
233 mtdcr(ebccfga
, pb0cr
);
234 mtdcr(ebccfgd
, flashcr
);
237 /* enable this if you want to test if
238 the relocation has be done ok.
239 This will disable both Chipselects */
240 mtdcr (ebccfga
, pb0cr
);
242 mtdcr (ebccfga
, pb1cr
);
244 printf("CS0 & CS1 switched off for test\n");
246 /* patch version_string */
247 for(i
=0;i
<0x100;i
++) {
258 /*-----------------------------------------------------------------------
260 void flash_print_info (flash_info_t
*info
)
266 volatile unsigned long *flash
;
268 if (info
->flash_id
== FLASH_UNKNOWN
) {
269 printf ("missing or unknown FLASH type\n");
273 switch (info
->flash_id
& FLASH_VENDMASK
) {
274 case FLASH_MAN_AMD
: printf ("AMD "); break;
275 case FLASH_MAN_FUJ
: printf ("FUJITSU "); break;
276 case FLASH_MAN_SST
: printf ("SST "); break;
277 case FLASH_MAN_INTEL
: printf ("Intel "); break;
278 default: printf ("Unknown Vendor "); break;
281 switch (info
->flash_id
& FLASH_TYPEMASK
) {
282 case FLASH_AM040
: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
284 case FLASH_AM400B
: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
286 case FLASH_AM400T
: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
288 case FLASH_AM800B
: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
290 case FLASH_AM800T
: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
292 case FLASH_AM160B
: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
294 case FLASH_AM160T
: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
296 case FLASH_AM320B
: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
298 case FLASH_AM320T
: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
300 case FLASH_SST800A
: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
302 case FLASH_SST160A
: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
304 case FLASH_INTEL320T
: printf ("TE28F320C3 (32 Mbit, top sector size)\n");
306 case FLASH_AM640U
: printf ("AM29LV640U (64 Mbit, uniform sector size)\n");
308 default: printf ("Unknown Chip Type\n");
312 printf (" Size: %ld KB in %d Sectors\n",
313 info
->size
>> 10, info
->sector_count
);
315 printf (" Sector Start Addresses:");
316 for (i
=0; i
<info
->sector_count
; ++i
) {
318 * Check if whole sector is erased
320 if (i
!= (info
->sector_count
-1))
321 size
= info
->start
[i
+1] - info
->start
[i
];
323 size
= info
->start
[0] + info
->size
- info
->start
[i
];
325 flash
= (volatile unsigned long *)info
->start
[i
];
326 size
= size
>> 2; /* divide by 4 for longword access */
327 for (k
=0; k
<size
; k
++) {
328 if (*flash
++ != 0xffffffff) {
335 printf (" %08lX%s%s",
338 info
->protect
[i
] ? "RO " : " ");
343 /*-----------------------------------------------------------------------
347 /*-----------------------------------------------------------------------
352 * The following code cannot be run from FLASH!
354 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
)
357 FLASH_WORD_SIZE value
;
359 volatile FLASH_WORD_SIZE
*addr2
= (FLASH_WORD_SIZE
*)addr
;
361 /* Write auto select command: read Manufacturer ID */
362 addr2
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
363 addr2
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
364 addr2
[ADDR0
] = (FLASH_WORD_SIZE
)0x00900090;
367 /* printf("flash_get_size value: %x\n",value); */
369 case (FLASH_WORD_SIZE
)AMD_MANUFACT
:
370 info
->flash_id
= FLASH_MAN_AMD
;
372 case (FLASH_WORD_SIZE
)FUJ_MANUFACT
:
373 info
->flash_id
= FLASH_MAN_FUJ
;
375 case (FLASH_WORD_SIZE
)INTEL_MANUFACT
:
376 info
->flash_id
= FLASH_MAN_INTEL
;
378 case (FLASH_WORD_SIZE
)SST_MANUFACT
:
379 info
->flash_id
= FLASH_MAN_SST
;
382 info
->flash_id
= FLASH_UNKNOWN
;
383 info
->sector_count
= 0;
385 return (0); /* no or unknown flash */
387 value
= addr2
[1]; /* device ID */
388 /* printf("Device value %x\n",value); */
390 case (FLASH_WORD_SIZE
)AMD_ID_F040B
:
391 info
->flash_id
+= FLASH_AM040
;
392 info
->sector_count
= 8;
393 info
->size
= 0x0080000; /* => 512 ko */
395 case (FLASH_WORD_SIZE
)AMD_ID_LV400T
:
396 info
->flash_id
+= FLASH_AM400T
;
397 info
->sector_count
= 11;
398 info
->size
= 0x00080000;
399 break; /* => 0.5 MB */
401 case (FLASH_WORD_SIZE
)AMD_ID_LV400B
:
402 info
->flash_id
+= FLASH_AM400B
;
403 info
->sector_count
= 11;
404 info
->size
= 0x00080000;
405 break; /* => 0.5 MB */
407 case (FLASH_WORD_SIZE
)AMD_ID_LV800T
:
408 info
->flash_id
+= FLASH_AM800T
;
409 info
->sector_count
= 19;
410 info
->size
= 0x00100000;
413 case (FLASH_WORD_SIZE
)AMD_ID_LV800B
:
414 info
->flash_id
+= FLASH_AM800B
;
415 info
->sector_count
= 19;
416 info
->size
= 0x00100000;
419 case (FLASH_WORD_SIZE
)AMD_ID_LV160T
:
420 info
->flash_id
+= FLASH_AM160T
;
421 info
->sector_count
= 35;
422 info
->size
= 0x00200000;
425 case (FLASH_WORD_SIZE
)AMD_ID_LV160B
:
426 info
->flash_id
+= FLASH_AM160B
;
427 info
->sector_count
= 35;
428 info
->size
= 0x00200000;
430 case (FLASH_WORD_SIZE
)AMD_ID_LV320T
:
431 info
->flash_id
+= FLASH_AM320T
;
432 info
->sector_count
= 67;
433 info
->size
= 0x00400000;
435 case (FLASH_WORD_SIZE
)AMD_ID_LV640U
:
436 info
->flash_id
+= FLASH_AM640U
;
437 info
->sector_count
= 128;
438 info
->size
= 0x00800000;
440 #if 0 /* enable when device IDs are available */
442 case (FLASH_WORD_SIZE
)AMD_ID_LV320B
:
443 info
->flash_id
+= FLASH_AM320B
;
444 info
->sector_count
= 67;
445 info
->size
= 0x00400000;
448 case (FLASH_WORD_SIZE
)SST_ID_xF800A
:
449 info
->flash_id
+= FLASH_SST800A
;
450 info
->sector_count
= 16;
451 info
->size
= 0x00100000;
453 case (FLASH_WORD_SIZE
)INTEL_ID_28F320C3T
:
454 info
->flash_id
+= FLASH_INTEL320T
;
455 info
->sector_count
= 71;
456 info
->size
= 0x00400000;
460 case (FLASH_WORD_SIZE
)SST_ID_xF160A
:
461 info
->flash_id
+= FLASH_SST160A
;
462 info
->sector_count
= 32;
463 info
->size
= 0x00200000;
467 info
->flash_id
= FLASH_UNKNOWN
;
468 return (0); /* => no or unknown flash */
471 /* base address calculation */
473 /* set up sector start address table */
474 if (((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_SST
) ||
475 (info
->flash_id
== FLASH_AM040
) ||
476 (info
->flash_id
== FLASH_AM640U
)){
477 for (i
= 0; i
< info
->sector_count
; i
++)
478 info
->start
[i
] = base
+ (i
* 0x00010000);
481 if (info
->flash_id
& FLASH_BTYPE
) {
482 /* set sector offsets for bottom boot block type */
483 info
->start
[0] = base
+ 0x00000000;
484 info
->start
[1] = base
+ 0x00004000;
485 info
->start
[2] = base
+ 0x00006000;
486 info
->start
[3] = base
+ 0x00008000;
487 for (i
= 4; i
< info
->sector_count
; i
++)
488 info
->start
[i
] = base
+ (i
* 0x00010000) - 0x00030000;
491 /* set sector offsets for top boot block type */
492 i
= info
->sector_count
- 1;
493 if(info
->sector_count
==71) {
495 info
->start
[i
--] = base
+ info
->size
- 0x00002000;
496 info
->start
[i
--] = base
+ info
->size
- 0x00004000;
497 info
->start
[i
--] = base
+ info
->size
- 0x00006000;
498 info
->start
[i
--] = base
+ info
->size
- 0x00008000;
499 info
->start
[i
--] = base
+ info
->size
- 0x0000A000;
500 info
->start
[i
--] = base
+ info
->size
- 0x0000C000;
501 info
->start
[i
--] = base
+ info
->size
- 0x0000E000;
503 info
->start
[i
] = base
+ i
* 0x000010000;
506 info
->start
[i
--] = base
+ info
->size
- 0x00004000;
507 info
->start
[i
--] = base
+ info
->size
- 0x00006000;
508 info
->start
[i
--] = base
+ info
->size
- 0x00008000;
510 info
->start
[i
] = base
+ i
* 0x00010000;
515 /* check for protected sectors */
516 for (i
= 0; i
< info
->sector_count
; i
++) {
517 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
518 /* D0 = 1 if protected */
519 addr2
= (volatile FLASH_WORD_SIZE
*)(info
->start
[i
]);
520 if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_INTEL
)
521 info
->protect
[i
] = 0;
523 info
->protect
[i
] = addr2
[2] & 1;
527 * Prevent writes to uninitialized FLASH.
529 if (info
->flash_id
!= FLASH_UNKNOWN
) {
530 addr2
= (FLASH_WORD_SIZE
*)info
->start
[0];
531 *addr2
= (FLASH_WORD_SIZE
)0x00F000F0; /* reset bank */
537 int wait_for_DQ7(flash_info_t
*info
, int sect
)
539 ulong start
, now
, last
;
540 volatile FLASH_WORD_SIZE
*addr
= (FLASH_WORD_SIZE
*)(info
->start
[sect
]);
542 start
= get_timer (0);
544 while ((addr
[0] & (FLASH_WORD_SIZE
)0x00800080) != (FLASH_WORD_SIZE
)0x00800080) {
545 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
546 printf ("Timeout\n");
549 /* show that we're waiting */
550 if ((now
- last
) > 1000) { /* every second */
558 int intel_wait_for_DQ7(flash_info_t
*info
, int sect
)
560 ulong start
, now
, last
;
561 volatile FLASH_WORD_SIZE
*addr
= (FLASH_WORD_SIZE
*)(info
->start
[sect
]);
563 start
= get_timer (0);
565 while ((addr
[0] & (FLASH_WORD_SIZE
)0x00800080) != (FLASH_WORD_SIZE
)0x00800080) {
566 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
567 printf ("Timeout\n");
570 /* show that we're waiting */
571 if ((now
- last
) > 1000) { /* every second */
576 addr
[0]=(FLASH_WORD_SIZE
)0x00500050;
580 /*-----------------------------------------------------------------------
583 int flash_erase (flash_info_t
*info
, int s_first
, int s_last
)
585 volatile FLASH_WORD_SIZE
*addr
= (FLASH_WORD_SIZE
*)(info
->start
[0]);
586 volatile FLASH_WORD_SIZE
*addr2
;
587 int flag
, prot
, sect
, l_sect
;
591 if ((s_first
< 0) || (s_first
> s_last
)) {
592 if (info
->flash_id
== FLASH_UNKNOWN
) {
593 printf ("- missing\n");
595 printf ("- no sectors to erase\n");
600 if (info
->flash_id
== FLASH_UNKNOWN
) {
601 printf ("Can't erase unknown flash type - aborted\n");
606 for (sect
=s_first
; sect
<=s_last
; ++sect
) {
607 if (info
->protect
[sect
]) {
613 printf ("- Warning: %d protected sectors will not be erased!\n",
621 /* Disable interrupts which might cause a timeout here */
622 flag
= disable_interrupts();
624 /* Start erase on unprotected sectors */
625 for (sect
= s_first
; sect
<=s_last
; sect
++) {
626 if (info
->protect
[sect
] == 0) { /* not protected */
627 addr2
= (FLASH_WORD_SIZE
*)(info
->start
[sect
]);
628 /* printf("Erasing sector %p\n", addr2); */ /* CLH */
629 if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_SST
) {
630 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
631 addr
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
632 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00800080;
633 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
634 addr
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
635 addr2
[0] = (FLASH_WORD_SIZE
)0x00500050; /* block erase */
637 udelay(1000); /* wait 1 ms */
638 wait_for_DQ7(info
, sect
);
641 if((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_INTEL
){
642 addr2
[0] = (FLASH_WORD_SIZE
)0x00600060; /* unlock sector */
643 addr2
[0] = (FLASH_WORD_SIZE
)0x00D000D0; /* sector erase */
644 intel_wait_for_DQ7(info
, sect
);
645 addr2
[0] = (FLASH_WORD_SIZE
)0x00200020; /* sector erase */
646 addr2
[0] = (FLASH_WORD_SIZE
)0x00D000D0; /* sector erase */
647 intel_wait_for_DQ7(info
, sect
);
650 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
651 addr
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
652 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00800080;
653 addr
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
654 addr
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
655 addr2
[0] = (FLASH_WORD_SIZE
)0x00300030; /* sector erase */
656 wait_for_DQ7(info
, sect
);
661 * Wait for each sector to complete, it's more
662 * reliable. According to AMD Spec, you must
663 * issue all erase commands within a specified
664 * timeout. This has been seen to fail, especially
665 * if printf()s are included (for debug)!!
667 /* wait_for_DQ7(info, sect); */
671 /* re-enable interrupts if necessary */
675 /* wait at least 80us - let's wait 1 ms */
680 * We wait for the last triggered sector
684 wait_for_DQ7(info
, l_sect
);
688 /* reset to read mode */
689 addr
= (FLASH_WORD_SIZE
*)info
->start
[0];
690 addr
[0] = (FLASH_WORD_SIZE
)0x00F000F0; /* reset bank */
697 void unlock_intel_sectors(flash_info_t
*info
,ulong addr
,ulong cnt
)
700 volatile FLASH_WORD_SIZE
*addr2
;
703 for(i
=info
->sector_count
-1;i
>0;i
--)
705 if(addr
>=info
->start
[i
])
709 addr2
= (FLASH_WORD_SIZE
*)(info
->start
[i
]);
710 addr2
[0] = (FLASH_WORD_SIZE
)0x00600060; /* unlock sector setup */
711 addr2
[0] = (FLASH_WORD_SIZE
)0x00D000D0; /* unlock sector */
712 intel_wait_for_DQ7(info
, i
);
714 c
-=(info
->start
[i
]-info
->start
[i
-1]);
719 /*-----------------------------------------------------------------------
720 * Copy memory to flash, returns:
723 * 2 - Flash not erased
726 int write_buff (flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
731 if((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_INTEL
){
732 unlock_intel_sectors(info
,addr
,cnt
);
734 wp
= (addr
& ~3); /* get lower word aligned address */
736 * handle unaligned start bytes
738 if ((l
= addr
- wp
) != 0) {
740 for (i
=0, cp
=wp
; i
<l
; ++i
, ++cp
) {
741 data
= (data
<< 8) | (*(uchar
*)cp
);
743 for (; i
<4 && cnt
>0; ++i
) {
744 data
= (data
<< 8) | *src
++;
748 for (; cnt
==0 && i
<4; ++i
, ++cp
) {
749 data
= (data
<< 8) | (*(uchar
*)cp
);
752 if ((rc
= write_word(info
, wp
, data
)) != 0) {
759 * handle word aligned part
763 for (i
=0; i
<4; ++i
) {
764 data
= (data
<< 8) | *src
++;
766 if ((rc
= write_word(info
, wp
, data
)) != 0) {
770 if((wp
% 0x10000)==0)
771 printf("."); /* show Progress */
780 * handle unaligned tail bytes
783 for (i
=0, cp
=wp
; i
<4 && cnt
>0; ++i
, ++cp
) {
784 data
= (data
<< 8) | *src
++;
787 for (; i
<4; ++i
, ++cp
) {
788 data
= (data
<< 8) | (*(uchar
*)cp
);
790 rc
=write_word(info
, wp
, data
);
794 /*-----------------------------------------------------------------------
795 * Write a word to Flash, returns:
798 * 2 - Flash not erased
800 static FLASH_WORD_SIZE
*read_val
= (FLASH_WORD_SIZE
*)0x200000;
802 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
)
804 volatile FLASH_WORD_SIZE
*addr2
= (FLASH_WORD_SIZE
*)(info
->start
[0]);
805 volatile FLASH_WORD_SIZE
*dest2
= (FLASH_WORD_SIZE
*)dest
;
806 volatile FLASH_WORD_SIZE
*data2
= (FLASH_WORD_SIZE
*)&data
;
811 /* Check if Flash is (sufficiently) erased */
812 if ((*((volatile FLASH_WORD_SIZE
*)dest
) &
813 (FLASH_WORD_SIZE
)data
) != (FLASH_WORD_SIZE
)data
) {
816 /* Disable interrupts which might cause a timeout here */
817 flag
= disable_interrupts();
818 for (i
=0; i
<4/sizeof(FLASH_WORD_SIZE
); i
++)
820 if((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_INTEL
){
821 /* intel style writting */
822 dest2
[i
] = (FLASH_WORD_SIZE
)0x00500050;
823 dest2
[i
] = (FLASH_WORD_SIZE
)0x00400040;
824 *read_val
++ = data2
[i
];
828 /* data polling for D7 */
829 start
= get_timer (0);
831 while ((dest2
[i
] & (FLASH_WORD_SIZE
)0x00800080) != (FLASH_WORD_SIZE
)0x00800080)
833 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
)
836 dest2
[i
] = (FLASH_WORD_SIZE
)0x00FF00FF; /* return to read mode */
838 dest2
[i
] = (FLASH_WORD_SIZE
)0x00FF00FF; /* return to read mode */
839 if(dest2
[i
]!=data2
[i
])
840 printf("Error at %p 0x%04X != 0x%04X\n",&dest2
[i
],dest2
[i
],data2
[i
]);
843 addr2
[ADDR0
] = (FLASH_WORD_SIZE
)0x00AA00AA;
844 addr2
[ADDR1
] = (FLASH_WORD_SIZE
)0x00550055;
845 addr2
[ADDR0
] = (FLASH_WORD_SIZE
)0x00A000A0;
847 /* re-enable interrupts if necessary */
850 /* data polling for D7 */
851 start
= get_timer (0);
852 while ((dest2
[i
] & (FLASH_WORD_SIZE
)0x00800080) !=
853 (data2
[i
] & (FLASH_WORD_SIZE
)0x00800080)) {
854 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
) {
863 /*-----------------------------------------------------------------------