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git.ipfire.org Git - people/ms/u-boot.git/blob - board/tqm8xx/flash.c
2 * (C) Copyright 2000-2002
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,
28 #include <environment.h>
31 #define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
34 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* info for FLASH chips */
36 /*-----------------------------------------------------------------------
39 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
);
40 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
);
42 /*-----------------------------------------------------------------------
45 unsigned long flash_init (void)
47 volatile immap_t
*immap
= (immap_t
*)CFG_IMMR
;
48 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
49 unsigned long size_b0
, size_b1
;
52 /* Init: no FLASHes known */
53 for (i
=0; i
<CFG_MAX_FLASH_BANKS
; ++i
) {
54 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
57 /* Static FLASH Bank configuration here - FIXME XXX */
59 debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM
);
61 size_b0
= flash_get_size((vu_long
*)FLASH_BASE0_PRELIM
, &flash_info
[0]);
63 debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM
);
65 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
66 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
67 size_b0
, size_b0
<<20);
70 size_b1
= flash_get_size((vu_long
*)FLASH_BASE1_PRELIM
, &flash_info
[1]);
72 debug ("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0
,size_b1
);
74 if (size_b1
> size_b0
) {
76 "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
80 flash_info
[0].flash_id
= FLASH_UNKNOWN
;
81 flash_info
[1].flash_id
= FLASH_UNKNOWN
;
82 flash_info
[0].sector_count
= -1;
83 flash_info
[1].sector_count
= -1;
84 flash_info
[0].size
= 0;
85 flash_info
[1].size
= 0;
89 debug ("## Before remap: "
90 "BR0: 0x%08x OR0: 0x%08x "
91 "BR1: 0x%08x OR1: 0x%08x\n",
92 memctl
->memc_br0
, memctl
->memc_or0
,
93 memctl
->memc_br1
, memctl
->memc_or1
);
95 /* Remap FLASH according to real size */
96 memctl
->memc_or0
= CFG_OR_TIMING_FLASH
| (-size_b0
& OR_AM_MSK
);
97 memctl
->memc_br0
= (CFG_FLASH_BASE
& BR_BA_MSK
) | BR_MS_GPCM
| BR_V
;
99 debug ("## BR0: 0x%08x OR0: 0x%08x\n",
100 memctl
->memc_br0
, memctl
->memc_or0
);
102 /* Re-do sizing to get full correct info */
103 size_b0
= flash_get_size((vu_long
*)CFG_FLASH_BASE
, &flash_info
[0]);
105 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
106 /* monitor protection ON by default */
107 debug ("Protect monitor: %08lx ... %08lx\n",
108 (ulong
)CFG_MONITOR_BASE
,
109 (ulong
)CFG_MONITOR_BASE
+ monitor_flash_len
- 1);
111 flash_protect(FLAG_PROTECT_SET
,
113 CFG_MONITOR_BASE
+ monitor_flash_len
- 1,
117 #ifdef CFG_ENV_IS_IN_FLASH
118 /* ENV protection ON by default */
119 debug ("Protect %senvironment: %08lx ... %08lx\n",
120 # ifdef CFG_ENV_ADDR_REDUND
126 (ulong
)CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1);
128 flash_protect(FLAG_PROTECT_SET
,
130 CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1,
134 #ifdef CFG_ENV_ADDR_REDUND
135 debug ("Protect redundand environment: %08lx ... %08lx\n",
136 (ulong
)CFG_ENV_ADDR_REDUND
,
137 (ulong
)CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1);
139 flash_protect(FLAG_PROTECT_SET
,
141 CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1,
146 memctl
->memc_or1
= CFG_OR_TIMING_FLASH
| (-size_b1
& 0xFFFF8000);
147 memctl
->memc_br1
= ((CFG_FLASH_BASE
+ size_b0
) & BR_BA_MSK
) |
150 debug ("## BR1: 0x%08x OR1: 0x%08x\n",
151 memctl
->memc_br1
, memctl
->memc_or1
);
153 /* Re-do sizing to get full correct info */
154 size_b1
= flash_get_size((vu_long
*)(CFG_FLASH_BASE
+ size_b0
),
157 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
158 /* monitor protection ON by default */
159 flash_protect(FLAG_PROTECT_SET
,
161 CFG_MONITOR_BASE
+monitor_flash_len
-1,
165 #ifdef CFG_ENV_IS_IN_FLASH
166 /* ENV protection ON by default */
167 flash_protect(FLAG_PROTECT_SET
,
169 CFG_ENV_ADDR
+CFG_ENV_SIZE
-1,
173 memctl
->memc_br1
= 0; /* invalidate bank */
175 flash_info
[1].flash_id
= FLASH_UNKNOWN
;
176 flash_info
[1].sector_count
= -1;
177 flash_info
[1].size
= 0;
179 debug ("## DISABLE BR1: 0x%08x OR1: 0x%08x\n",
180 memctl
->memc_br1
, memctl
->memc_or1
);
183 debug ("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0
,size_b1
);
185 flash_info
[0].size
= size_b0
;
186 flash_info
[1].size
= size_b1
;
188 return (size_b0
+ size_b1
);
191 /*-----------------------------------------------------------------------
193 void flash_print_info (flash_info_t
*info
)
197 if (info
->flash_id
== FLASH_UNKNOWN
) {
198 printf ("missing or unknown FLASH type\n");
202 switch (info
->flash_id
& FLASH_VENDMASK
) {
203 case FLASH_MAN_AMD
: printf ("AMD "); break;
204 case FLASH_MAN_FUJ
: printf ("FUJITSU "); break;
205 default: printf ("Unknown Vendor "); break;
208 switch (info
->flash_id
& FLASH_TYPEMASK
) {
209 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
210 case FLASH_AMLV128U
: printf ("AM29LV128ML (128Mbit, uniform sector size)\n");
212 # else /* ! TQM8xxM */
213 case FLASH_AM400B
: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
215 case FLASH_AM400T
: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
217 case FLASH_AM800B
: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
219 case FLASH_AM800T
: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
221 case FLASH_AM160B
: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
223 case FLASH_AM160T
: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
225 case FLASH_AM320B
: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
227 case FLASH_AM320T
: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
230 default: printf ("Unknown Chip Type\n");
234 printf (" Size: %ld MB in %d Sectors\n",
235 info
->size
>> 20, info
->sector_count
);
237 printf (" Sector Start Addresses:");
238 for (i
=0; i
<info
->sector_count
; ++i
) {
243 info
->protect
[i
] ? " (RO)" : " "
250 /*-----------------------------------------------------------------------
254 /*-----------------------------------------------------------------------
258 * The following code cannot be run from FLASH!
261 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
)
265 ulong base
= (ulong
)addr
;
267 /* Write auto select command: read Manufacturer ID */
268 addr
[0x0555] = 0x00AA00AA;
269 addr
[0x02AA] = 0x00550055;
270 addr
[0x0555] = 0x00900090;
274 debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong
)addr
, value
);
278 info
->flash_id
= FLASH_MAN_AMD
;
281 info
->flash_id
= FLASH_MAN_FUJ
;
284 info
->flash_id
= FLASH_UNKNOWN
;
285 info
->sector_count
= 0;
287 return (0); /* no or unknown flash */
290 value
= addr
[1]; /* device ID */
292 debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong
)(&addr
[1]), value
);
295 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
298 case AMD_ID_LV128U_2
:
299 if (addr
[15] != AMD_ID_LV128U_3
) {
300 info
->flash_id
= FLASH_UNKNOWN
;
303 info
->flash_id
+= FLASH_AMLV128U
;
304 info
->sector_count
= 256;
305 info
->size
= 0x02000000;
307 break; /* => 32 MB */
309 info
->flash_id
= FLASH_UNKNOWN
;
313 # else /* ! TQM8xxM */
315 info
->flash_id
+= FLASH_AM400T
;
316 info
->sector_count
= 11;
317 info
->size
= 0x00100000;
321 info
->flash_id
+= FLASH_AM400B
;
322 info
->sector_count
= 11;
323 info
->size
= 0x00100000;
327 info
->flash_id
+= FLASH_AM800T
;
328 info
->sector_count
= 19;
329 info
->size
= 0x00200000;
333 info
->flash_id
+= FLASH_AM800B
;
334 info
->sector_count
= 19;
335 info
->size
= 0x00200000;
339 info
->flash_id
+= FLASH_AM160T
;
340 info
->sector_count
= 35;
341 info
->size
= 0x00400000;
345 info
->flash_id
+= FLASH_AM160B
;
346 info
->sector_count
= 35;
347 info
->size
= 0x00400000;
351 info
->flash_id
+= FLASH_AM320T
;
352 info
->sector_count
= 71;
353 info
->size
= 0x00800000;
357 info
->flash_id
+= FLASH_AM320B
;
358 info
->sector_count
= 71;
359 info
->size
= 0x00800000;
363 info
->flash_id
= FLASH_UNKNOWN
;
364 return (0); /* => no or unknown flash */
367 /* set up sector start address table */
369 #ifdef CONFIG_TQM8xxM /* mirror bit flash */
371 switch (info
->flash_id
& FLASH_TYPEMASK
) {
372 /* only known types here - no default */
374 for (i
= 0; i
< info
->sector_count
; i
++) {
375 info
->start
[i
] = base
;
381 # else /* ! TQM8xxM */
385 /* set sector offsets for bottom boot block type */
386 info
->start
[0] = base
+ 0x00000000;
387 info
->start
[1] = base
+ 0x00008000;
388 info
->start
[2] = base
+ 0x0000C000;
389 info
->start
[3] = base
+ 0x00010000;
390 for (i
= 4; i
< info
->sector_count
; i
++) {
391 info
->start
[i
] = base
+ (i
* 0x00020000) - 0x00060000;
397 /* set sector offsets for top boot block type */
398 i
= info
->sector_count
- 1;
399 info
->start
[i
--] = base
+ info
->size
- 0x00008000;
400 info
->start
[i
--] = base
+ info
->size
- 0x0000C000;
401 info
->start
[i
--] = base
+ info
->size
- 0x00010000;
402 for (; i
>= 0; i
--) {
403 info
->start
[i
] = base
+ i
* 0x00020000;
407 for (i
= 0; i
< info
->sector_count
; i
++) {
408 info
->start
[i
] = base
;
410 * The first 8 sectors are 8 kB,
411 * all the other ones are 64 kB
419 for (i
= 0; i
< info
->sector_count
; i
++) {
420 info
->start
[i
] = base
;
422 * The last 8 sectors are 8 kB,
423 * all the other ones are 64 kB
425 base
+= (i
< (info
->sector_count
- 8))
436 /* check for protected sectors */
437 for (i
= 0; i
< info
->sector_count
; i
++) {
438 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
439 /* D0 = 1 if protected */
440 addr
= (volatile unsigned long *)(info
->start
[i
]);
441 info
->protect
[i
] = addr
[2] & 1;
445 * Prevent writes to uninitialized FLASH.
447 if (info
->flash_id
!= FLASH_UNKNOWN
) {
448 addr
= (volatile unsigned long *)info
->start
[0];
450 *addr
= 0x00F000F0; /* reset bank */
457 /*-----------------------------------------------------------------------
460 int flash_erase (flash_info_t
*info
, int s_first
, int s_last
)
462 vu_long
*addr
= (vu_long
*)(info
->start
[0]);
463 int flag
, prot
, sect
, l_sect
;
464 ulong start
, now
, last
;
466 debug ("flash_erase: first: %d last: %d\n", s_first
, s_last
);
468 if ((s_first
< 0) || (s_first
> s_last
)) {
469 if (info
->flash_id
== FLASH_UNKNOWN
) {
470 printf ("- missing\n");
472 printf ("- no sectors to erase\n");
477 if ((info
->flash_id
== FLASH_UNKNOWN
) ||
478 (info
->flash_id
> FLASH_AMD_COMP
)) {
479 printf ("Can't erase unknown flash type %08lx - aborted\n",
485 for (sect
=s_first
; sect
<=s_last
; ++sect
) {
486 if (info
->protect
[sect
]) {
492 printf ("- Warning: %d protected sectors will not be erased!\n",
500 /* Disable interrupts which might cause a timeout here */
501 flag
= disable_interrupts();
503 addr
[0x0555] = 0x00AA00AA;
504 addr
[0x02AA] = 0x00550055;
505 addr
[0x0555] = 0x00800080;
506 addr
[0x0555] = 0x00AA00AA;
507 addr
[0x02AA] = 0x00550055;
509 /* Start erase on unprotected sectors */
510 for (sect
= s_first
; sect
<=s_last
; sect
++) {
511 if (info
->protect
[sect
] == 0) { /* not protected */
512 addr
= (vu_long
*)(info
->start
[sect
]);
513 addr
[0] = 0x00300030;
518 /* re-enable interrupts if necessary */
522 /* wait at least 80us - let's wait 1 ms */
526 * We wait for the last triggered sector
531 start
= get_timer (0);
533 addr
= (vu_long
*)(info
->start
[l_sect
]);
534 while ((addr
[0] & 0x00800080) != 0x00800080) {
535 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
536 printf ("Timeout\n");
539 /* show that we're waiting */
540 if ((now
- last
) > 1000) { /* every second */
547 /* reset to read mode */
548 addr
= (volatile unsigned long *)info
->start
[0];
549 addr
[0] = 0x00F000F0; /* reset bank */
555 /*-----------------------------------------------------------------------
556 * Copy memory to flash, returns:
559 * 2 - Flash not erased
562 int write_buff (flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
567 wp
= (addr
& ~3); /* get lower word aligned address */
570 * handle unaligned start bytes
572 if ((l
= addr
- wp
) != 0) {
574 for (i
=0, cp
=wp
; i
<l
; ++i
, ++cp
) {
575 data
= (data
<< 8) | (*(uchar
*)cp
);
577 for (; i
<4 && cnt
>0; ++i
) {
578 data
= (data
<< 8) | *src
++;
582 for (; cnt
==0 && i
<4; ++i
, ++cp
) {
583 data
= (data
<< 8) | (*(uchar
*)cp
);
586 if ((rc
= write_word(info
, wp
, data
)) != 0) {
593 * handle word aligned part
597 for (i
=0; i
<4; ++i
) {
598 data
= (data
<< 8) | *src
++;
600 if ((rc
= write_word(info
, wp
, data
)) != 0) {
612 * handle unaligned tail bytes
615 for (i
=0, cp
=wp
; i
<4 && cnt
>0; ++i
, ++cp
) {
616 data
= (data
<< 8) | *src
++;
619 for (; i
<4; ++i
, ++cp
) {
620 data
= (data
<< 8) | (*(uchar
*)cp
);
623 return (write_word(info
, wp
, data
));
626 /*-----------------------------------------------------------------------
627 * Write a word to Flash, returns:
630 * 2 - Flash not erased
632 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
)
634 vu_long
*addr
= (vu_long
*)(info
->start
[0]);
638 /* Check if Flash is (sufficiently) erased */
639 if ((*((vu_long
*)dest
) & data
) != data
) {
642 /* Disable interrupts which might cause a timeout here */
643 flag
= disable_interrupts();
645 addr
[0x0555] = 0x00AA00AA;
646 addr
[0x02AA] = 0x00550055;
647 addr
[0x0555] = 0x00A000A0;
649 *((vu_long
*)dest
) = data
;
651 /* re-enable interrupts if necessary */
655 /* data polling for D7 */
656 start
= get_timer (0);
657 while ((*((vu_long
*)dest
) & 0x00800080) != (data
& 0x00800080)) {
658 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
) {
665 /*-----------------------------------------------------------------------