]>
git.ipfire.org Git - people/ms/u-boot.git/blob - board/mvblue/flash.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 * (C) Copyright 2001-2003
6 * Changes for MATRIX Vision mvBLUE devices
7 * MATRIX Vision GmbH / hg,as info@matrix-vision.de
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #define mvdebug(p) printf ##p
34 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
];
36 #define FLASH_BUS_WIDTH 8
38 #if (FLASH_BUS_WIDTH==32)
39 #define FLASH_DATA_MASK 0xffffffff
42 #elif (FLASH_BUS_WIDTH==16)
43 #define FLASH_DATA_MASK 0xff
46 #elif (FLASH_BUS_WIDTH==8)
47 #define FLASH_DATA_MASK 0xff
51 #error FLASH_BUS_WIDTH undefined
54 /*-----------------------------------------------------------------------
57 static ulong
flash_get_size (vu_long
*address
, flash_info_t
*info
);
58 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
);
59 static void flash_get_offsets (ulong base
, flash_info_t
*info
);
61 /*-----------------------------------------------------------------------
63 unsigned long flash_init (void)
65 unsigned long size_b0
;
68 for (i
=0; i
<CFG_MAX_FLASH_BANKS
; ++i
) {
69 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
72 size_b0
= flash_get_size((vu_long
*)0xffc00000, &flash_info
[0]);
74 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
75 printf ("## Unknown FLASH : Size = 0x%08lx = %ld MB\n",
76 size_b0
, size_b0
<<20);
79 flash_get_offsets (0xffc00000, &flash_info
[0]);
80 flash_info
[0].size
= size_b0
;
82 /* monitor protection OFF by default */
83 flash_protect ( FLAG_PROTECT_CLEAR
, 0xffc00000, 0x2000, flash_info
);
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_BTYPE
)
96 { /* bottom boot sector types - these are the useful ones! */
97 /* set sector offsets for bottom boot block type */
98 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM320B
)
99 { /* AMDLV320B has 8 x 8k bottom boot sectors */
100 for (i
= 0; i
< 8; i
++) /* +8k */
101 info
->start
[i
] = base
+ (i
* (0x00002000 << FLASH_SHIFT
));
102 for (; i
< info
->sector_count
; i
++) /* +64k */
103 info
->start
[i
] = base
+ (i
* (0x00010000 << FLASH_SHIFT
)) - (0x00070000 << FLASH_SHIFT
);
106 { /* other types have 4 bottom boot sectors (16,8,8,32) */
108 info
->start
[i
++] = base
+ 0x00000000; /* - */
109 info
->start
[i
++] = base
+ (0x00004000 << FLASH_SHIFT
); /* +16k */
110 info
->start
[i
++] = base
+ (0x00006000 << FLASH_SHIFT
); /* +8k */
111 info
->start
[i
++] = base
+ (0x00008000 << FLASH_SHIFT
); /* +8k */
112 info
->start
[i
++] = base
+ (0x00010000 << FLASH_SHIFT
); /* +32k */
113 for (; i
< info
->sector_count
; i
++) /* +64k */
114 info
->start
[i
] = base
+ (i
* (0x00010000 << FLASH_SHIFT
)) - (0x00030000 << FLASH_SHIFT
);
118 { /* top boot sector types - not so useful */
119 /* set sector offsets for top boot block type */
120 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM320T
)
121 { /* AMDLV320T has 8 x 8k top boot sectors */
122 for (i
= 0; i
< info
->sector_count
- 8; i
++) /* +64k */
123 info
->start
[i
] = base
+ (i
* (0x00010000 << FLASH_SHIFT
));
124 for (; i
< info
->sector_count
; i
++) /* +8k */
125 info
->start
[i
] = base
+ (i
* (0x00002000 << FLASH_SHIFT
));
128 { /* other types have 4 top boot sectors (32,8,8,16) */
129 for (i
= 0; i
< info
->sector_count
- 4; i
++) /* +64k */
130 info
->start
[i
] = base
+ (i
* (0x00010000 << FLASH_SHIFT
));
132 info
->start
[i
++] = base
+ info
->size
- (0x00010000 << FLASH_SHIFT
); /* -32k */
133 info
->start
[i
++] = base
+ info
->size
- (0x00008000 << FLASH_SHIFT
); /* -8k */
134 info
->start
[i
++] = base
+ info
->size
- (0x00006000 << FLASH_SHIFT
); /* -8k */
135 info
->start
[i
] = base
+ info
->size
- (0x00004000 << FLASH_SHIFT
); /* -16k */
140 /*-----------------------------------------------------------------------
142 void flash_print_info (flash_info_t
*info
)
146 if (info
->flash_id
== FLASH_UNKNOWN
) {
147 printf ("missing or unknown FLASH type\n");
151 switch (info
->flash_id
& FLASH_VENDMASK
) {
152 case FLASH_MAN_AMD
: printf ("AMD "); break;
153 case FLASH_MAN_FUJ
: printf ("FUJITSU "); break;
154 case FLASH_MAN_STM
: printf ("ST "); break;
155 default: printf ("Unknown Vendor "); break;
158 switch (info
->flash_id
& FLASH_TYPEMASK
) {
159 case FLASH_AM160B
: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
161 case FLASH_AM160T
: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
163 case FLASH_AM320B
: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
165 case FLASH_AM320T
: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
167 case FLASH_STMW320DB
: printf ("M29W320B (32 Mbit, bottom boot sect)\n");
169 case FLASH_STMW320DT
: printf ("M29W320T (32 Mbit, top boot sector)\n");
171 default: printf ("Unknown Chip Type\n");
175 printf (" Size: %ld MB in %d Sectors\n", info
->size
>> 20, info
->sector_count
);
177 printf (" Sector Start Addresses:");
178 for (i
=0; i
<info
->sector_count
; ++i
) {
181 printf (" %08lX%s", info
->start
[i
], info
->protect
[i
] ? " (RO)" : " ");
187 * The following code cannot be run from FLASH!
190 #define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK)
191 #define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK)
192 #define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK)
193 #define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK)
194 #define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK)
195 #define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK)
196 #define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK)
197 #define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK)
198 #define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK)
200 #if (FLASH_BUS_WIDTH >= 16)
201 #define AUTOSELECT_ADDR1 0x0555
202 #define AUTOSELECT_ADDR2 0x02AA
203 #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
205 #define AUTOSELECT_ADDR1 0x0AAA
206 #define AUTOSELECT_ADDR2 0x0555
207 #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
210 #define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
211 #define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK)
212 #define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK)
214 #define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK)
217 static ulong
flash_get_size (vu_long
*address
, flash_info_t
*info
)
221 FDT
*addr
= (FDT
*)address
;
223 ulong base
= (ulong
)address
;
224 addr
[AUTOSELECT_ADDR1
] = AUTOSELECT_DATA1
;
225 addr
[AUTOSELECT_ADDR2
] = AUTOSELECT_DATA2
;
226 addr
[AUTOSELECT_ADDR3
] = AUTOSELECT_DATA3
;
227 __asm__
__volatile__("sync");
231 value
= addr
[0]; /* manufacturer ID */
233 case AMD_MANUFACT_MVS
:
234 info
->flash_id
= FLASH_MAN_AMD
;
236 case FUJ_MANUFACT_MVS
:
237 info
->flash_id
= FLASH_MAN_FUJ
;
239 case STM_MANUFACT_MVS
:
240 info
->flash_id
= FLASH_MAN_STM
;
243 info
->flash_id
= FLASH_UNKNOWN
;
244 info
->sector_count
= 0;
246 return (0); /* no or unknown flash */
248 #if (FLASH_BUS_WIDTH >= 16)
249 value
= addr
[1]; /* device ID */
251 value
= addr
[2]; /* device ID */
255 case AMD_ID_LV160T_MVS
:
256 info
->flash_id
+= FLASH_AM160T
;
257 info
->sector_count
= 37;
258 info
->size
= (0x00200000 << FLASH_SHIFT
);
259 break; /* => 2 or 4 MB */
261 case AMD_ID_LV160B_MVS
:
262 info
->flash_id
+= FLASH_AM160B
;
263 info
->sector_count
= 37;
264 info
->size
= (0x00200000 << FLASH_SHIFT
);
265 break; /* => 2 or 4 MB */
267 case AMD_ID_LV320T_MVS
:
268 info
->flash_id
+= FLASH_AM320T
;
269 info
->sector_count
= 71;
270 info
->size
= (0x00400000 << FLASH_SHIFT
);
271 break; /* => 4 or 8 MB */
273 case AMD_ID_LV320B_MVS
:
274 info
->flash_id
+= FLASH_AM320B
;
275 info
->sector_count
= 71;
276 info
->size
= (0x00400000 << FLASH_SHIFT
);
277 break; /* => 4 or 8MB */
279 case STM_ID_W320DT_MVS
:
280 info
->flash_id
+= FLASH_STMW320DT
;
281 info
->sector_count
= 67;
282 info
->size
= (0x00400000 << FLASH_SHIFT
);
283 break; /* => 4 or 8 MB */
285 case STM_ID_W320DB_MVS
:
286 info
->flash_id
+= FLASH_STMW320DB
;
287 info
->sector_count
= 67;
288 info
->size
= (0x00400000 << FLASH_SHIFT
);
289 break; /* => 4 or 8MB */
292 info
->flash_id
= FLASH_UNKNOWN
;
293 return (0); /* => no or unknown flash */
297 /* set up sector start address table */
298 flash_get_offsets (base
, info
);
300 /* check for protected sectors */
301 for (i
= 0; i
< info
->sector_count
; i
++) {
302 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
303 /* D0 = 1 if protected */
304 addr
= (FDT
*)(info
->start
[i
]);
305 info
->protect
[i
] = addr
[2] & 1;
309 * Prevent writes to uninitialized FLASH.
311 if (info
->flash_id
!= FLASH_UNKNOWN
) {
312 addr
= (FDT
*)info
->start
[0];
313 *addr
= RESET_BANK_DATA
; /* reset bank */
319 /*-----------------------------------------------------------------------
322 #if (FLASH_BUS_WIDTH >= 16)
323 #define ERASE_ADDR1 0x0555
324 #define ERASE_ADDR2 0x02AA
326 #define ERASE_ADDR1 0x0AAA
327 #define ERASE_ADDR2 0x0555
330 #define ERASE_ADDR3 ERASE_ADDR1
331 #define ERASE_ADDR4 ERASE_ADDR1
332 #define ERASE_ADDR5 ERASE_ADDR2
334 #define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
335 #define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK)
336 #define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK)
337 #define ERASE_DATA4 ERASE_DATA1
338 #define ERASE_DATA5 ERASE_DATA2
340 #define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK)
341 #define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK)
342 #define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK)
344 int flash_erase (flash_info_t
*info
, int s_first
, int s_last
)
346 FDT
*addr
= (FDT
*)(info
->start
[0]);
348 int prot
, sect
, l_sect
, flag
;
349 ulong start
, now
, last
;
351 __asm__
__volatile__ ("sync");
355 printf("\nflash_erase: first = %d @ 0x%08lx\n", s_first
, info
->start
[s_first
] );
356 printf(" last = %d @ 0x%08lx\n", s_last
, info
->start
[s_last
] );
358 if ((s_first
< 0) || (s_first
> s_last
)) {
359 if (info
->flash_id
== FLASH_UNKNOWN
) {
360 printf ("- missing\n");
362 printf ("- no sectors to erase\n");
367 if ((info
->flash_id
== FLASH_UNKNOWN
) || (info
->flash_id
> FLASH_AMD_COMP
)) {
368 printf ("Can't erase unknown flash type %08lx - aborted\n", info
->flash_id
);
373 for (sect
=s_first
; sect
<=s_last
; ++sect
) {
374 if (info
->protect
[sect
]) {
380 printf ("- Warning: %d protected sectors will not be erased!\n",
388 /* Disable interrupts which might cause a timeout here */
389 flag
= disable_interrupts();
391 addr
[ERASE_ADDR1
] = ERASE_DATA1
;
392 addr
[ERASE_ADDR2
] = ERASE_DATA2
;
393 addr
[ERASE_ADDR3
] = ERASE_DATA3
;
394 addr
[ERASE_ADDR4
] = ERASE_DATA4
;
395 addr
[ERASE_ADDR5
] = ERASE_DATA5
;
397 for (sect
= s_first
; sect
<= s_last
; sect
++) {
398 if (info
->protect
[sect
] == 0) {
399 addr
= (FDT
*)(info
->start
[sect
]);
400 addr
[0] = ERASE_SECTOR_DATA
;
409 * We wait for the last triggered sector
414 start
= get_timer (0);
416 addr
= (FDT
*)(info
->start
[l_sect
]);
418 while ((addr
[0] & ERASE_CONFIRM_DATA
) != ERASE_CONFIRM_DATA
) {
419 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
420 printf ("Timeout\n");
423 /* show that we're waiting */
424 if ((now
- last
) > 1000) { /* every second */
435 /*-----------------------------------------------------------------------
436 * Copy memory to flash, returns:
439 * 2 - Flash not erased
442 int write_buff (flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
448 mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src
, addr
, cnt
));
450 wp
= (addr
& ~3); /* get lower word aligned address */
452 * handle unaligned start bytes
454 if ((l
= addr
- wp
) != 0) {
455 mvdebug ((" handle unaligned start bytes (cnt = 0x%08lx)\n", cnt
));
457 for (i
=0, cp
=wp
; i
<l
; ++i
, ++cp
) {
458 data
= (data
<< 8) | (*(uchar
*)cp
);
460 for (; i
<BUFF_INC
&& cnt
>0; ++i
) {
461 data
= (data
<< 8) | *src
++;
465 for (; cnt
==0 && i
<BUFF_INC
; ++i
, ++cp
) {
466 data
= (data
<< 8) | (*(uchar
*)cp
);
469 if ((rc
= write_word(info
, wp
, data
)) != 0) {
476 * handle (half)word aligned part
478 mvdebug ((" handle word aligned part (cnt = 0x%08lx)\n", cnt
));
479 while (cnt
>= BUFF_INC
) {
481 for (i
=0; i
<BUFF_INC
; ++i
) {
482 data
= (data
<< 8) | *src
++;
484 if ((rc
= write_word(info
, wp
, data
)) != 0) {
496 * handle unaligned tail bytes
498 mvdebug ((" handle unaligned tail bytes (cnt = 0x%08lx)\n", cnt
));
500 for (i
=0, cp
=wp
; i
<BUFF_INC
&& cnt
>0; ++i
, ++cp
) {
501 data
= (data
<< 8) | *src
++;
504 for (; i
<BUFF_INC
; ++i
, ++cp
) {
505 data
= (data
<< 8) | (*(uchar
*)cp
);
508 return (write_word(info
, wp
, data
));
511 #if (FLASH_BUS_WIDTH >= 16)
512 #define WRITE_ADDR1 0x0555
513 #define WRITE_ADDR2 0x02AA
515 #define WRITE_ADDR1 0x0AAA
516 #define WRITE_ADDR2 0x0555
517 #define WRITE_ADDR3 WRITE_ADDR1
520 #define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
521 #define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK)
522 #define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK)
524 #define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA
526 /*-----------------------------------------------------------------------
527 * Write a byte to Flash, returns:
530 * 2 - Flash not erased
532 static int write_char (flash_info_t
*info
, ulong dest
, uchar data
)
534 vu_char
*addr
= (vu_char
*)(info
->start
[0]);
538 /* Check if Flash is (sufficiently) erased */
539 if ((*((vu_char
*)dest
) & data
) != data
) {
540 printf(" *** ERROR: Flash not erased !\n");
543 flag
= disable_interrupts();
545 addr
[WRITE_ADDR1
] = WRITE_DATA1
;
546 addr
[WRITE_ADDR2
] = WRITE_DATA2
;
547 addr
[WRITE_ADDR3
] = WRITE_DATA3
;
548 *((vu_char
*)dest
) = data
;
553 /* data polling for D7 */
554 start
= get_timer (0);
555 addr
= (vu_char
*)dest
;
556 while (( (*addr
) & WRITE_CONFIRM_DATA
) != (data
& WRITE_CONFIRM_DATA
)) {
557 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
) {
558 printf(" *** ERROR: Flash write timeout !");
562 mvdebug (("-write_byte\n"));
566 /*-----------------------------------------------------------------------
567 * Write a word to Flash, returns:
570 * 2 - Flash not erased
572 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
)
577 mvdebug (("+write_word : 0x%08lx @ 0x%08lx\n", data
, dest
));
578 for ( i
=0; (i
< 4) && (result
== 0); i
++, dest
+=1 )
579 result
= write_char (info
, dest
, (data
>> (8*(3-i
))) & 0xff );
580 mvdebug (("-write_word\n"));
583 /*---------------------------------------------------------------- */