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git.ipfire.org Git - people/ms/u-boot.git/blob - board/netphone/flash.c
2 * (C) Copyright 2000-2004
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,
27 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
]; /* info for FLASH chips */
29 /*-----------------------------------------------------------------------
32 static ulong
flash_get_size(vu_long
* addr
, flash_info_t
* info
);
33 static int write_byte(flash_info_t
* info
, ulong dest
, uchar data
);
34 static void flash_get_offsets(ulong base
, flash_info_t
* info
);
36 /*-----------------------------------------------------------------------
39 unsigned long flash_init(void)
41 volatile immap_t
*immap
= (immap_t
*) CFG_IMMR
;
42 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
46 /* Init: no FLASHes known */
47 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; ++i
)
48 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
50 size
= flash_get_size((vu_long
*) FLASH_BASE0_PRELIM
, &flash_info
[0]);
52 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
53 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
57 /* Remap FLASH according to real size */
58 memctl
->memc_or0
= CFG_OR_TIMING_FLASH
| (-size
& 0xFFFF8000);
59 memctl
->memc_br0
= (CFG_FLASH_BASE
& BR_BA_MSK
) | (memctl
->memc_br0
& ~(BR_BA_MSK
));
61 /* Re-do sizing to get full correct info */
62 size
= flash_get_size((vu_long
*) CFG_FLASH_BASE
, &flash_info
[0]);
64 flash_get_offsets(CFG_FLASH_BASE
, &flash_info
[0]);
66 /* monitor protection ON by default */
67 flash_protect(FLAG_PROTECT_SET
,
68 CFG_FLASH_BASE
, CFG_FLASH_BASE
+ monitor_flash_len
- 1,
71 flash_protect ( FLAG_PROTECT_SET
,
73 CFG_ENV_ADDR
+ CFG_ENV_SIZE
- 1,
76 #ifdef CFG_ENV_ADDR_REDUND
77 flash_protect ( FLAG_PROTECT_SET
,
79 CFG_ENV_ADDR_REDUND
+ CFG_ENV_SIZE_REDUND
- 1,
83 flash_info
[0].size
= size
;
88 /*-----------------------------------------------------------------------
90 static void flash_get_offsets(ulong base
, flash_info_t
* info
)
94 /* set up sector start address table */
95 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM040
) {
96 for (i
= 0; i
< info
->sector_count
; i
++) {
97 info
->start
[i
] = base
+ (i
* 0x00010000);
99 } else if (info
->flash_id
& FLASH_BTYPE
) {
100 /* set sector offsets for bottom boot block type */
101 info
->start
[0] = base
+ 0x00000000;
102 info
->start
[1] = base
+ 0x00004000;
103 info
->start
[2] = base
+ 0x00006000;
104 info
->start
[3] = base
+ 0x00008000;
105 for (i
= 4; i
< info
->sector_count
; i
++) {
106 info
->start
[i
] = base
+ (i
* 0x00010000) - 0x00030000;
109 /* set sector offsets for top boot block type */
110 i
= info
->sector_count
- 1;
111 info
->start
[i
--] = base
+ info
->size
- 0x00004000;
112 info
->start
[i
--] = base
+ info
->size
- 0x00006000;
113 info
->start
[i
--] = base
+ info
->size
- 0x00008000;
114 for (; i
>= 0; i
--) {
115 info
->start
[i
] = base
+ i
* 0x00010000;
120 /*-----------------------------------------------------------------------
122 void flash_print_info(flash_info_t
* info
)
126 if (info
->flash_id
== FLASH_UNKNOWN
) {
127 printf("missing or unknown FLASH type\n");
131 switch (info
->flash_id
& FLASH_VENDMASK
) {
142 printf("Unknown Vendor ");
146 switch (info
->flash_id
& FLASH_TYPEMASK
) {
148 printf("AM29LV040B (4 Mbit, bottom boot sect)\n");
151 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
154 printf("AM29LV400T (4 Mbit, top boot sector)\n");
157 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
160 printf("AM29LV800T (8 Mbit, top boot sector)\n");
163 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
166 printf("AM29LV160T (16 Mbit, top boot sector)\n");
169 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
172 printf("AM29LV320T (32 Mbit, top boot sector)\n");
175 printf("Unknown Chip Type\n");
179 printf(" Size: %ld MB in %d Sectors\n", info
->size
>> 20, info
->sector_count
);
181 printf(" Sector Start Addresses:");
182 for (i
= 0; i
< info
->sector_count
; ++i
) {
185 printf(" %08lX%s", info
->start
[i
], info
->protect
[i
] ? " (RO)" : " ");
190 /*-----------------------------------------------------------------------
194 /*-----------------------------------------------------------------------
198 * The following code cannot be run from FLASH!
201 static ulong
flash_get_size(vu_long
* addr
, flash_info_t
* info
)
206 vu_char
*caddr
= (vu_char
*) addr
;
207 ulong base
= (ulong
) addr
;
209 /* Write auto select command: read Manufacturer ID */
210 caddr
[0x0555] = 0xAA;
211 caddr
[0x02AA] = 0x55;
212 caddr
[0x0555] = 0x90;
216 case (AMD_MANUFACT
& 0xFF):
217 info
->flash_id
= FLASH_MAN_AMD
;
219 case (FUJ_MANUFACT
& 0xFF):
220 info
->flash_id
= FLASH_MAN_FUJ
;
222 case (MX_MANUFACT
& 0xFF):
223 info
->flash_id
= FLASH_MAN_MX
;
225 case (STM_MANUFACT
& 0xFF):
226 info
->flash_id
= FLASH_MAN_STM
;
229 info
->flash_id
= FLASH_UNKNOWN
;
230 info
->sector_count
= 0;
232 return (0); /* no or unknown flash */
235 pid
= caddr
[1]; /* device ID */
237 case (AMD_ID_LV400T
& 0xFF):
238 info
->flash_id
+= FLASH_AM400T
;
239 info
->sector_count
= 11;
240 info
->size
= 0x00080000;
241 break; /* => 512 kB */
243 case (AMD_ID_LV400B
& 0xFF):
244 info
->flash_id
+= FLASH_AM400B
;
245 info
->sector_count
= 11;
246 info
->size
= 0x00080000;
247 break; /* => 512 kB */
249 case (AMD_ID_LV800T
& 0xFF):
250 info
->flash_id
+= FLASH_AM800T
;
251 info
->sector_count
= 19;
252 info
->size
= 0x00100000;
255 case (AMD_ID_LV800B
& 0xFF):
256 info
->flash_id
+= FLASH_AM800B
;
257 info
->sector_count
= 19;
258 info
->size
= 0x00100000;
261 case (AMD_ID_LV160T
& 0xFF):
262 info
->flash_id
+= FLASH_AM160T
;
263 info
->sector_count
= 35;
264 info
->size
= 0x00200000;
267 case (AMD_ID_LV160B
& 0xFF):
268 info
->flash_id
+= FLASH_AM160B
;
269 info
->sector_count
= 35;
270 info
->size
= 0x00200000;
273 case (AMD_ID_LV040B
& 0xFF):
274 info
->flash_id
+= FLASH_AM040
;
275 info
->sector_count
= 8;
276 info
->size
= 0x00080000;
279 case (STM_ID_M29W040B
& 0xFF):
280 info
->flash_id
+= FLASH_AM040
;
281 info
->sector_count
= 8;
282 info
->size
= 0x00080000;
285 #if 0 /* enable when device IDs are available */
286 case (AMD_ID_LV320T
& 0xFF):
287 info
->flash_id
+= FLASH_AM320T
;
288 info
->sector_count
= 67;
289 info
->size
= 0x00400000;
292 case (AMD_ID_LV320B
& 0xFF):
293 info
->flash_id
+= FLASH_AM320B
;
294 info
->sector_count
= 67;
295 info
->size
= 0x00400000;
299 info
->flash_id
= FLASH_UNKNOWN
;
300 return (0); /* => no or unknown flash */
305 /* set up sector start address table */
306 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM040
) {
307 for (i
= 0; i
< info
->sector_count
; i
++) {
308 info
->start
[i
] = base
+ (i
* 0x00010000);
310 } else if (info
->flash_id
& FLASH_BTYPE
) {
311 /* set sector offsets for bottom boot block type */
312 info
->start
[0] = base
+ 0x00000000;
313 info
->start
[1] = base
+ 0x00004000;
314 info
->start
[2] = base
+ 0x00006000;
315 info
->start
[3] = base
+ 0x00008000;
316 for (i
= 4; i
< info
->sector_count
; i
++) {
317 info
->start
[i
] = base
+ (i
* 0x00010000) - 0x00030000;
320 /* set sector offsets for top boot block type */
321 i
= info
->sector_count
- 1;
322 info
->start
[i
--] = base
+ info
->size
- 0x00004000;
323 info
->start
[i
--] = base
+ info
->size
- 0x00006000;
324 info
->start
[i
--] = base
+ info
->size
- 0x00008000;
325 for (; i
>= 0; i
--) {
326 info
->start
[i
] = base
+ i
* 0x00010000;
330 /* check for protected sectors */
331 for (i
= 0; i
< info
->sector_count
; i
++) {
332 /* read sector protection: D0 = 1 if protected */
333 caddr
= (volatile unsigned char *)(info
->start
[i
]);
334 info
->protect
[i
] = caddr
[2] & 1;
338 * Prevent writes to uninitialized FLASH.
340 if (info
->flash_id
!= FLASH_UNKNOWN
) {
341 caddr
= (vu_char
*) info
->start
[0];
343 caddr
[0x0555] = 0xAA;
344 caddr
[0x02AA] = 0x55;
345 caddr
[0x0555] = 0xF0;
354 /*-----------------------------------------------------------------------
357 int flash_erase(flash_info_t
* info
, int s_first
, int s_last
)
359 vu_char
*addr
= (vu_char
*) (info
->start
[0]);
360 int flag
, prot
, sect
, l_sect
;
361 ulong start
, now
, last
;
363 if ((s_first
< 0) || (s_first
> s_last
)) {
364 if (info
->flash_id
== FLASH_UNKNOWN
) {
365 printf("- missing\n");
367 printf("- no sectors to erase\n");
372 if ((info
->flash_id
== FLASH_UNKNOWN
) ||
373 (info
->flash_id
> FLASH_AMD_COMP
)) {
374 printf("Can't erase unknown flash type %08lx - aborted\n", info
->flash_id
);
379 for (sect
= s_first
; sect
<= s_last
; ++sect
) {
380 if (info
->protect
[sect
]) {
386 printf("- Warning: %d protected sectors will not be erased!\n", prot
);
393 /* Disable interrupts which might cause a timeout here */
394 flag
= disable_interrupts();
402 /* Start erase on unprotected sectors */
403 for (sect
= s_first
; sect
<= s_last
; sect
++) {
404 if (info
->protect
[sect
] == 0) { /* not protected */
405 addr
= (vu_char
*) (info
->start
[sect
]);
411 /* re-enable interrupts if necessary */
415 /* wait at least 80us - let's wait 1 ms */
419 * We wait for the last triggered sector
424 start
= get_timer(0);
426 addr
= (vu_char
*) (info
->start
[l_sect
]);
427 while ((addr
[0] & 0x80) != 0x80) {
428 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
432 /* show that we're waiting */
433 if ((now
- last
) > 1000) { /* every second */
440 /* reset to read mode */
441 addr
= (vu_char
*) info
->start
[0];
442 addr
[0] = 0xF0; /* reset bank */
448 /*-----------------------------------------------------------------------
449 * Copy memory to flash, returns:
452 * 2 - Flash not erased
455 int write_buff(flash_info_t
* info
, uchar
* src
, ulong addr
, ulong cnt
)
460 if ((rc
= write_byte(info
, addr
++, *src
++)) != 0) {
469 /*-----------------------------------------------------------------------
470 * Write a word to Flash, returns:
473 * 2 - Flash not erased
475 static int write_byte(flash_info_t
* info
, ulong dest
, uchar data
)
477 vu_char
*addr
= (vu_char
*) (info
->start
[0]);
481 /* Check if Flash is (sufficiently) erased */
482 if ((*((vu_char
*) dest
) & data
) != data
) {
485 /* Disable interrupts which might cause a timeout here */
486 flag
= disable_interrupts();
492 *((vu_char
*) dest
) = data
;
494 /* re-enable interrupts if necessary */
498 /* data polling for D7 */
499 start
= get_timer(0);
500 while ((*((vu_char
*) dest
) & 0x80) != (data
& 0x80)) {
501 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
) {