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git.ipfire.org Git - people/ms/u-boot.git/blob - board/MAI/AmigaOneG3SE/flash_new.c
3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 /*---------------------------------------------------------------------*/
37 #define DEBUGF(fmt,args...) printf(fmt ,##args)
39 #define DEBUGF(fmt,args...)
41 /*---------------------------------------------------------------------*/
43 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
];
45 static ulong
flash_get_size (ulong addr
, flash_info_t
*info
);
46 static int flash_get_offsets (ulong base
, flash_info_t
*info
);
47 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
);
48 static void flash_reset (ulong addr
);
52 static void flash_to_xd(void)
58 if (flash_xd_nest
== 1)
60 DEBUGF("Flash on XD\n");
61 x
= pci_read_cfg_byte(0, 0, 0x74);
62 pci_write_cfg_byte(0, 0, 0x74, x
|1);
66 static void flash_to_mem(void)
72 if (flash_xd_nest
== 0)
74 DEBUGF("Flash on memory bus\n");
75 x
= pci_read_cfg_byte(0, 0, 0x74);
76 pci_write_cfg_byte(0, 0, 0x74, x
&0xFE);
80 unsigned long flash_init_old(void)
84 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; i
++)
86 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
87 flash_info
[i
].sector_count
= 0;
88 flash_info
[i
].size
= 0;
95 unsigned long flash_init (void)
98 unsigned long flash_size
= 0;
104 /* Init: no FLASHes known */
105 for (i
=0; i
<CFG_MAX_FLASH_BANKS
; ++i
) {
106 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
107 flash_info
[i
].sector_count
= 0;
108 flash_info
[i
].size
= 0;
111 DEBUGF("\n## Get flash size @ 0x%08x\n", CFG_FLASH_BASE
);
113 flash_size
= flash_get_size (CFG_FLASH_BASE
, flash_info
);
115 DEBUGF("## Flash bank size: %08lx\n", flash_size
);
118 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE && \
119 CFG_MONITOR_BASE < CFG_FLASH_BASE + CFG_FLASH_MAX_SIZE
120 /* monitor protection ON by default */
121 flash_protect(FLAG_PROTECT_SET
,
123 CFG_MONITOR_BASE
+ monitor_flash_len
- 1,
127 #ifdef CFG_ENV_IS_IN_FLASH
128 /* ENV protection ON by default */
129 flash_protect(FLAG_PROTECT_SET
,
131 CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1,
136 puts ("Warning: the BOOT Flash is not initialised !");
145 * The following code cannot be run from FLASH!
147 static ulong
flash_get_size (ulong addr
, flash_info_t
*info
)
151 uchar
*x
= (uchar
*)addr
;
155 /* Write auto select command: read Manufacturer ID */
157 __asm
volatile ("sync\n eieio");
159 __asm
volatile ("sync\n eieio");
161 __asm
volatile ("sync\n eieio");
164 __asm
volatile ("sync\n eieio");
166 DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (ulong
)addr
, value
);
168 switch (value
| (value
<< 16)) {
170 info
->flash_id
= FLASH_MAN_AMD
;
174 info
->flash_id
= FLASH_MAN_FUJ
;
178 info
->flash_id
= FLASH_MAN_STM
;
182 info
->flash_id
= FLASH_UNKNOWN
;
183 info
->sector_count
= 0;
190 __asm
volatile ("sync\n eieio");
192 DEBUGF("Device ID @ 0x%08lx: 0x%08x\n", addr
+1, value
);
196 DEBUGF("Am29F040B\n");
197 info
->flash_id
+= FLASH_AM040
;
198 info
->sector_count
= 8;
199 info
->size
= 0x00080000;
200 break; /* => 512 kB */
203 DEBUGF("Am29LV040B\n");
204 info
->flash_id
+= FLASH_AM040
;
205 info
->sector_count
= 8;
206 info
->size
= 0x00080000;
207 break; /* => 512 kB */
210 DEBUGF("Am29LV400T\n");
211 info
->flash_id
+= FLASH_AM400T
;
212 info
->sector_count
= 11;
213 info
->size
= 0x00100000;
217 DEBUGF("Am29LV400B\n");
218 info
->flash_id
+= FLASH_AM400B
;
219 info
->sector_count
= 11;
220 info
->size
= 0x00100000;
224 DEBUGF("Am29LV800T\n");
225 info
->flash_id
+= FLASH_AM800T
;
226 info
->sector_count
= 19;
227 info
->size
= 0x00200000;
231 DEBUGF("Am29LV400B\n");
232 info
->flash_id
+= FLASH_AM800B
;
233 info
->sector_count
= 19;
234 info
->size
= 0x00200000;
238 DEBUGF("Am29LV160T\n");
239 info
->flash_id
+= FLASH_AM160T
;
240 info
->sector_count
= 35;
241 info
->size
= 0x00400000;
245 DEBUGF("Am29LV160B\n");
246 info
->flash_id
+= FLASH_AM160B
;
247 info
->sector_count
= 35;
248 info
->size
= 0x00400000;
252 DEBUGF("Am29LV320T\n");
253 info
->flash_id
+= FLASH_AM320T
;
254 info
->sector_count
= 67;
255 info
->size
= 0x00800000;
259 /* Has the same ID as AMD_ID_LV320T, to be fixed */
261 DEBUGF("Am29LV320B\n");
262 info
->flash_id
+= FLASH_AM320B
;
263 info
->sector_count
= 67;
264 info
->size
= 0x00800000;
269 DEBUGF("Am29LV033C\n");
270 info
->flash_id
+= FLASH_AM033C
;
271 info
->sector_count
= 64;
272 info
->size
= 0x01000000;
276 DEBUGF("M29F040B\n");
277 info
->flash_id
+= FLASH_AM040
;
278 info
->sector_count
= 8;
279 info
->size
= 0x00080000;
280 break; /* => 512 kB */
283 info
->flash_id
= FLASH_UNKNOWN
;
286 return (0); /* => no or unknown flash */
290 if (info
->sector_count
> CFG_MAX_FLASH_SECT
) {
291 printf ("** ERROR: sector count %d > max (%d) **\n",
292 info
->sector_count
, CFG_MAX_FLASH_SECT
);
293 info
->sector_count
= CFG_MAX_FLASH_SECT
;
296 if (! flash_get_offsets (addr
, info
)) {
302 /* check for protected sectors */
303 for (i
= 0; i
< info
->sector_count
; i
++) {
304 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
305 /* D0 = 1 if protected */
306 value
= in8(info
->start
[i
] + 2);
308 info
->protect
[i
] = (value
& 1) != 0;
312 * Reset bank to read mode
321 static int flash_get_offsets (ulong base
, flash_info_t
*info
)
325 switch (info
->flash_id
& FLASH_TYPEMASK
) {
327 /* set sector offsets for uniform sector type */
328 for (i
= 0; i
< info
->sector_count
; i
++) {
329 info
->start
[i
] = base
+ i
* info
->size
/
340 int flash_erase (flash_info_t
*info
, int s_first
, int s_last
)
342 volatile ulong addr
= info
->start
[0];
343 int flag
, prot
, sect
, l_sect
;
344 ulong start
, now
, last
;
348 if (s_first
< 0 || s_first
> s_last
) {
349 if (info
->flash_id
== FLASH_UNKNOWN
) {
350 printf ("- missing\n");
352 printf ("- no sectors to erase\n");
358 if (info
->flash_id
== FLASH_UNKNOWN
) {
359 printf ("Can't erase unknown flash type %08lx - aborted\n",
366 for (sect
=s_first
; sect
<=s_last
; ++sect
) {
367 if (info
->protect
[sect
]) {
373 printf ("- Warning: %d protected sectors will not be erased!\n",
381 /* Disable interrupts which might cause a timeout here */
382 flag
= disable_interrupts();
384 out8(addr
+ 0x555, 0xAA);
386 out8(addr
+ 0x2AA, 0x55);
388 out8(addr
+ 0x555, 0x80);
390 out8(addr
+ 0x555, 0xAA);
392 out8(addr
+ 0x2AA, 0x55);
395 /* Start erase on unprotected sectors */
396 for (sect
= s_first
; sect
<=s_last
; sect
++) {
397 if (info
->protect
[sect
] == 0) { /* not protected */
398 addr
= info
->start
[sect
];
405 /* re-enable interrupts if necessary */
409 /* wait at least 80us - let's wait 1 ms */
413 * We wait for the last triggered sector
418 start
= get_timer (0);
420 addr
= info
->start
[l_sect
];
422 DEBUGF ("Start erase timeout: %d\n", CFG_FLASH_ERASE_TOUT
);
424 while ((in8(addr
) & 0x80) != 0x80) {
425 if ((now
= get_timer(start
)) > CFG_FLASH_ERASE_TOUT
) {
426 printf ("Timeout\n");
427 flash_reset (info
->start
[0]);
431 /* show that we're waiting */
432 if ((now
- last
) > 1000) { /* every second */
440 /* reset to read mode */
441 flash_reset (info
->start
[0]);
449 * Copy memory to flash, returns:
452 * 2 - Flash not erased
454 int write_buff (flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
461 wp
= (addr
& ~3); /* get lower word aligned address */
464 * handle unaligned start bytes
466 if ((l
= addr
- wp
) != 0) {
468 for (i
=0, cp
=wp
; i
<l
; ++i
, ++cp
) {
469 data
= (data
<< 8) | (*(uchar
*)cp
);
471 for (; i
<4 && cnt
>0; ++i
) {
472 data
= (data
<< 8) | *src
++;
476 for (; cnt
==0 && i
<4; ++i
, ++cp
) {
477 data
= (data
<< 8) | (*(uchar
*)cp
);
480 if ((rc
= write_word(info
, wp
, data
)) != 0) {
488 * handle word aligned part
492 for (i
=0; i
<4; ++i
) {
493 data
= (data
<< 8) | *src
++;
495 if ((rc
= write_word(info
, wp
, data
)) != 0) {
509 * handle unaligned tail bytes
512 for (i
=0, cp
=wp
; i
<4 && cnt
>0; ++i
, ++cp
) {
513 data
= (data
<< 8) | *src
++;
516 for (; i
<4; ++i
, ++cp
) {
517 data
= (data
<< 8) | (*(uchar
*)cp
);
522 return (write_word(info
, wp
, data
));
526 * Write a word to Flash, returns:
529 * 2 - Flash not erased
531 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
)
533 volatile ulong addr
= info
->start
[0];
539 /* Check if Flash is (sufficiently) erased */
540 if ((in32(dest
) & data
) != data
) {
545 /* write each byte out */
546 for (i
= 0; i
< 4; i
++) {
547 char *data_ch
= (char *)&data
;
548 int flag
= disable_interrupts();
550 out8(addr
+ 0x555, 0xAA);
552 out8(addr
+ 0x2AA, 0x55);
554 out8(addr
+ 0x555, 0xA0);
556 out8(dest
+i
, data_ch
[i
]);
559 /* re-enable interrupts if necessary */
563 /* data polling for D7 */
564 start
= get_timer (0);
565 while ((in8(dest
+i
) & 0x80) != (data_ch
[i
] & 0x80)) {
566 if (get_timer(start
) > CFG_FLASH_WRITE_TOUT
) {
581 * Reset bank to read mode
583 static void flash_reset (ulong addr
)
586 out8(addr
, 0xF0); /* reset bank */
591 void flash_print_info (flash_info_t
*info
)
595 if (info
->flash_id
== FLASH_UNKNOWN
) {
596 printf ("missing or unknown FLASH type\n");
600 switch (info
->flash_id
& FLASH_VENDMASK
) {
601 case FLASH_MAN_AMD
: printf ("AMD "); break;
602 case FLASH_MAN_FUJ
: printf ("FUJITSU "); break;
603 case FLASH_MAN_BM
: printf ("BRIGHT MICRO "); break;
604 case FLASH_MAN_STM
: printf ("SGS THOMSON "); break;
605 default: printf ("Unknown Vendor "); break;
608 switch (info
->flash_id
& FLASH_TYPEMASK
) {
609 case FLASH_AM040
: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
611 case FLASH_AM400B
: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
613 case FLASH_AM400T
: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
615 case FLASH_AM800B
: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
617 case FLASH_AM800T
: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
619 case FLASH_AM160B
: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
621 case FLASH_AM160T
: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
623 case FLASH_AM320B
: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
625 case FLASH_AM320T
: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
627 default: printf ("Unknown Chip Type\n");
631 if (info
->size
% 0x100000 == 0) {
632 printf (" Size: %ld MB in %d Sectors\n",
633 info
->size
/ 0x100000, info
->sector_count
);
634 } else if (info
->size
% 0x400 == 0) {
635 printf (" Size: %ld KB in %d Sectors\n",
636 info
->size
/ 0x400, info
->sector_count
);
638 printf (" Size: %ld B in %d Sectors\n",
639 info
->size
, info
->sector_count
);
642 printf (" Sector Start Addresses:");
643 for (i
=0; i
<info
->sector_count
; ++i
) {
648 info
->protect
[i
] ? " (RO)" : " "