3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/ppc4xx.h>
12 #include <asm/processor.h>
16 /* info for FLASH chips */
17 flash_info_t flash_info
[CONFIG_SYS_MAX_FLASH_BANKS
];
22 static ulong
flash_get_size(vu_long
*addr
, flash_info_t
*info
);
23 static int write_word8(flash_info_t
*info
, ulong dest
, ulong data
);
24 static int write_word32(flash_info_t
*info
, ulong dest
, ulong data
);
25 static void flash_get_offsets(ulong base
, flash_info_t
*info
);
27 unsigned long flash_init(void)
30 unsigned long size_b0
, base_b0
;
31 unsigned long size_b1
;
33 /* Init: no FLASHes known */
34 for (i
= 0; i
< CONFIG_SYS_MAX_FLASH_BANKS
; ++i
)
35 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
37 /* Get Size of Boot and Main Flashes */
38 size_b0
= flash_get_size((vu_long
*) FLASH_BASE0_PRELIM
,
40 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
41 printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
42 size_b0
, size_b0
<< 20);
46 flash_get_size((vu_long
*) FLASH_BASE1_PRELIM
,
48 if (flash_info
[1].flash_id
== FLASH_UNKNOWN
) {
49 printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
50 size_b1
, size_b1
<< 20);
54 /* Calculate base addresses */
57 /* Setup offsets for Boot Flash */
58 flash_get_offsets(base_b0
, &flash_info
[0]);
60 /* Protect board level data */
61 (void) flash_protect(FLAG_PROTECT_SET
,
63 flash_info
[0].start
[1] - 1, &flash_info
[0]);
65 /* Monitor protection ON by default */
66 (void) flash_protect(FLAG_PROTECT_SET
,
67 base_b0
+ size_b0
- monitor_flash_len
,
68 base_b0
+ size_b0
- 1, &flash_info
[0]);
70 /* Protect the FPGA image */
71 (void) flash_protect(FLAG_PROTECT_SET
,
73 FLASH_BASE1_PRELIM
+ CONFIG_SYS_FPGA_IMAGE_LEN
-
76 /* Protect the default boot image */
77 (void) flash_protect(FLAG_PROTECT_SET
,
78 FLASH_BASE1_PRELIM
+ CONFIG_SYS_FPGA_IMAGE_LEN
,
79 FLASH_BASE1_PRELIM
+ CONFIG_SYS_FPGA_IMAGE_LEN
+
80 0x600000 - 1, &flash_info
[1]);
82 /* Setup offsets for Main Flash */
83 flash_get_offsets(FLASH_BASE1_PRELIM
, &flash_info
[1]);
85 return size_b0
+ size_b1
;
88 static void flash_get_offsets(ulong base
, flash_info_t
*info
)
92 /* set up sector start address table - FOR BOOT ROM ONLY!!! */
93 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM040
) {
94 for (i
= 0; i
< info
->sector_count
; i
++)
95 info
->start
[i
] = base
+ (i
* 0x00010000);
97 } /* end flash_get_offsets() */
99 void flash_print_info(flash_info_t
*info
)
105 volatile unsigned long *flash
;
107 if (info
->flash_id
== FLASH_UNKNOWN
) {
108 printf("missing or unknown FLASH type\n");
112 switch (info
->flash_id
& FLASH_VENDMASK
) {
119 case FLASH_MAN_INTEL
:
120 printf("2 x Intel ");
123 printf("Unknown Vendor ");
126 switch (info
->flash_id
& FLASH_TYPEMASK
) {
128 if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_AMD
)
129 printf("AM29LV040 (4096 Kbit, uniform sector size)\n");
130 else if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_STM
)
131 printf("M29W040B (4096 Kbit, uniform block size)\n");
133 printf("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n");
135 case FLASH_28F320J3A
:
136 printf("28F320J3A (32 Mbit = 128K x 32)\n");
138 case FLASH_28F640J3A
:
139 printf("28F640J3A (64 Mbit = 128K x 64)\n");
141 case FLASH_28F128J3A
:
142 printf("28F128J3A (128 Mbit = 128K x 128)\n");
145 printf("Unknown Chip Type\n");
148 if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_STM
) {
149 printf(" Size: %ld KB in %d Blocks\n",
150 info
->size
>> 10, info
->sector_count
);
152 printf(" Size: %ld KB in %d Sectors\n",
153 info
->size
>> 10, info
->sector_count
);
156 printf(" Sector Start Addresses:");
157 for (i
= 0; i
< info
->sector_count
; ++i
) {
159 * Check if whole sector is erased
161 if (i
!= (info
->sector_count
- 1))
162 size
= info
->start
[i
+ 1] - info
->start
[i
];
164 size
= info
->start
[0] + info
->size
- info
->start
[i
];
166 flash
= (volatile unsigned long *) info
->start
[i
];
167 size
= size
>> 2; /* divide by 4 for longword access */
168 for (k
= 0; k
< size
; k
++) {
169 if (*flash
++ != 0xffffffff) {
180 info
->protect
[i
] ? "RO " : " ");
183 } /* end flash_print_info() */
186 * The following code cannot be run from FLASH!
188 static ulong
flash_get_size(vu_long
*addr
, flash_info_t
*info
)
191 ulong base
= (ulong
) addr
;
193 /* Setup default type */
194 info
->flash_id
= FLASH_UNKNOWN
;
195 info
->sector_count
= 0;
198 /* Test for Boot Flash */
199 if (base
== FLASH_BASE0_PRELIM
) {
201 volatile unsigned char *addr2
= (unsigned char *) addr
;
203 /* Write auto select command: read Manufacturer ID */
204 *(addr2
+ 0x555) = 0xaa;
205 *(addr2
+ 0x2aa) = 0x55;
206 *(addr2
+ 0x555) = 0x90;
211 case (unsigned char) AMD_MANUFACT
:
212 info
->flash_id
= FLASH_MAN_AMD
;
214 case (unsigned char) STM_MANUFACT
:
215 info
->flash_id
= FLASH_MAN_STM
;
218 *addr2
= 0xf0; /* no or unknown flash */
223 value
= *(addr2
+ 1);
225 case (unsigned char) AMD_ID_LV040B
:
226 case (unsigned char) STM_ID_29W040B
:
227 info
->flash_id
+= FLASH_AM040
;
228 info
->sector_count
= 8;
229 info
->size
= 0x00080000;
230 break; /* => 512Kb */
232 *addr2
= 0xf0; /* => no or unknown flash */
235 } else { /* MAIN Flash */
237 volatile unsigned long *addr2
= (unsigned long *) addr
;
239 /* Write auto select command: read Manufacturer ID */
245 case (unsigned long) INTEL_MANUFACT
:
246 info
->flash_id
= FLASH_MAN_INTEL
;
249 *addr2
= 0xff; /* no or unknown flash */
253 /* Device ID - This shit is interleaved... */
254 value
= *(addr2
+ 1);
256 case (unsigned long) INTEL_ID_28F320J3A
:
257 info
->flash_id
+= FLASH_28F320J3A
;
258 info
->sector_count
= 32;
259 info
->size
= 0x00400000 * 2;
260 break; /* => 2 X 4 MB */
261 case (unsigned long) INTEL_ID_28F640J3A
:
262 info
->flash_id
+= FLASH_28F640J3A
;
263 info
->sector_count
= 64;
264 info
->size
= 0x00800000 * 2;
265 break; /* => 2 X 8 MB */
266 case (unsigned long) INTEL_ID_28F128J3A
:
267 info
->flash_id
+= FLASH_28F128J3A
;
268 info
->sector_count
= 128;
269 info
->size
= 0x01000000 * 2;
270 break; /* => 2 X 16 MB */
272 *addr2
= 0xff; /* => no or unknown flash */
276 /* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */
277 if (info
->sector_count
> CONFIG_SYS_MAX_FLASH_SECT
) {
278 printf("** ERROR: sector count %d > max (%d) **\n",
279 info
->sector_count
, CONFIG_SYS_MAX_FLASH_SECT
);
280 info
->sector_count
= CONFIG_SYS_MAX_FLASH_SECT
;
283 /* set up sector start address table */
284 switch (info
->flash_id
& FLASH_TYPEMASK
) {
286 for (i
= 0; i
< info
->sector_count
; i
++)
287 info
->start
[i
] = base
+ (i
* 0x00010000);
289 case FLASH_28F320J3A
:
290 case FLASH_28F640J3A
:
291 case FLASH_28F128J3A
:
292 for (i
= 0; i
< info
->sector_count
; i
++)
293 info
->start
[i
] = base
+
294 (i
* 0x00020000 * 2); /* 2 Banks */
298 /* Test for Boot Flash */
299 if (base
== FLASH_BASE0_PRELIM
) {
300 volatile unsigned char *addr2
;
302 /* check for protected sectors */
303 for (i
= 0; i
< info
->sector_count
; i
++) {
305 * read sector protection at sector address,
307 * D0 = 1 if protected
309 addr2
= (volatile unsigned char *) (info
->start
[i
]);
310 info
->protect
[i
] = *(addr2
+ 2) & 1;
313 /* Restore read mode */
314 *(unsigned char *) base
= 0xF0; /* Reset NORMAL Flash */
315 } else { /* Main Flash */
316 volatile unsigned long *addr2
;
318 /* check for protected sectors */
319 for (i
= 0; i
< info
->sector_count
; i
++) {
321 * read sector protection at sector address,
323 * D0 = 1 if protected
325 addr2
= (volatile unsigned long *) (info
->start
[i
]);
326 info
->protect
[i
] = *(addr2
+ 2) & 0x1;
329 /* Restore read mode */
330 *(unsigned long *) base
= 0xFFFFFFFF; /* Reset Flash */
334 } /* end flash_get_size() */
336 static int wait_for_DQ7(ulong addr
, uchar cmp_val
, ulong tout
)
340 volatile uchar
*vaddr
= (uchar
*) addr
;
343 for (i
= 1; i
<= (100 * tout
); i
++) { /* Wait up to tout ms */
347 /* Check for completion */
348 if ((vaddr
[0] & 0x80) == (cmp_val
& 0x80))
351 /* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */
355 /* Kick the dog if needed */
360 } /* wait_for_DQ7() */
362 static int flash_erase8(flash_info_t
*info
, int s_first
, int s_last
)
364 int tcode
, rcode
= 0;
365 volatile uchar
*addr
= (uchar
*) (info
->start
[0]);
366 volatile uchar
*sector_addr
;
367 int flag
, prot
, sect
;
369 /* Validate arguments */
370 if ((s_first
< 0) || (s_first
> s_last
)) {
371 if (info
->flash_id
== FLASH_UNKNOWN
)
372 printf("- missing\n");
374 printf("- no sectors to erase\n");
378 /* Check for KNOWN flash type */
379 if (info
->flash_id
== FLASH_UNKNOWN
) {
380 printf("Can't erase unknown flash type - aborted\n");
384 /* Check for protected sectors */
386 for (sect
= s_first
; sect
<= s_last
; ++sect
) {
387 if (info
->protect
[sect
])
391 printf("- Warning: %d protected sectors will not be erased!\n",
397 /* Start erase on unprotected sectors */
398 for (sect
= s_first
; sect
<= s_last
; sect
++) {
399 if (info
->protect
[sect
] == 0) { /* not protected */
400 sector_addr
= (uchar
*) (info
->start
[sect
]);
402 if ((info
->flash_id
& FLASH_VENDMASK
) ==
404 printf("Erasing block %p\n", sector_addr
);
406 printf("Erasing sector %p\n", sector_addr
);
408 /* Disable interrupts which might cause timeout */
409 flag
= disable_interrupts();
411 *(addr
+ 0x555) = (uchar
) 0xAA;
412 *(addr
+ 0x2aa) = (uchar
) 0x55;
413 *(addr
+ 0x555) = (uchar
) 0x80;
414 *(addr
+ 0x555) = (uchar
) 0xAA;
415 *(addr
+ 0x2aa) = (uchar
) 0x55;
416 *sector_addr
= (uchar
) 0x30; /* sector erase */
419 * Wait for each sector to complete, it's more
420 * reliable. According to AMD Spec, you must
421 * issue all erase commands within a specified
422 * timeout. This has been seen to fail, especially
423 * if printf()s are included (for debug)!!
424 * Takes up to 6 seconds.
426 tcode
= wait_for_DQ7((ulong
) sector_addr
, 0x80, 6000);
428 /* re-enable interrupts if necessary */
432 /* Make sure we didn't timeout */
440 /* wait at least 80us - let's wait 1 ms */
443 /* reset to read mode */
444 addr
= (uchar
*) info
->start
[0];
445 *addr
= (uchar
) 0xF0; /* reset bank */
449 } /* end flash_erase8() */
451 static int flash_erase32(flash_info_t
*info
, int s_first
, int s_last
)
454 ulong start
, now
, last
;
457 /* Validate arguments */
458 if ((s_first
< 0) || (s_first
> s_last
)) {
459 if (info
->flash_id
== FLASH_UNKNOWN
)
460 printf("- missing\n");
462 printf("- no sectors to erase\n");
466 /* Check for KNOWN flash type */
467 if ((info
->flash_id
& FLASH_VENDMASK
) != FLASH_MAN_INTEL
) {
468 printf("Can erase only Intel flash types - aborted\n");
472 /* Check for protected sectors */
473 for (sect
= s_first
; sect
<= s_last
; ++sect
) {
474 if (info
->protect
[sect
])
478 printf("- Warning: %d protected sectors will not be erased!\n",
484 start
= get_timer(0);
486 /* Start erase on unprotected sectors */
487 for (sect
= s_first
; sect
<= s_last
; sect
++) {
489 if (info
->protect
[sect
] == 0) { /* not protected */
490 vu_long
*addr
= (vu_long
*) (info
->start
[sect
]);
491 unsigned long status
;
493 /* Disable interrupts which might cause a timeout */
494 flag
= disable_interrupts();
496 *addr
= 0x00500050; /* clear status register */
497 *addr
= 0x00200020; /* erase setup */
498 *addr
= 0x00D000D0; /* erase confirm */
500 /* re-enable interrupts if necessary */
504 /* Wait at least 80us - let's wait 1 ms */
507 while (((status
= *addr
) & 0x00800080) != 0x00800080) {
508 now
= get_timer(start
);
509 if (now
> CONFIG_SYS_FLASH_ERASE_TOUT
) {
513 /* reset to read mode */
519 * show that we're waiting
522 if ((now
- last
) > 990) {
527 *addr
= 0x00FF00FF; /* reset to read mode */
534 int flash_erase(flash_info_t
*info
, int s_first
, int s_last
)
536 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM040
)
537 return flash_erase8(info
, s_first
, s_last
);
539 return flash_erase32(info
, s_first
, s_last
);
543 * Copy memory to flash, returns:
546 * 2 - Flash not erased
548 static int write_buff8(flash_info_t
*info
, uchar
*src
, ulong addr
,
555 start
= get_timer(0);
557 wp
= (addr
& ~3); /* get lower word
561 * handle unaligned start bytes
566 for (i
= 0, cp
= wp
; i
< l
; ++i
, ++cp
)
567 data
= (data
<< 8) | (*(uchar
*) cp
);
569 for (; i
< 4 && cnt
> 0; ++i
) {
570 data
= (data
<< 8) | *src
++;
575 for (; cnt
== 0 && i
< 4; ++i
, ++cp
)
576 data
= (data
<< 8) | (*(uchar
*) cp
);
578 rc
= write_word8(info
, wp
, data
);
586 * handle word aligned part
590 for (i
= 0; i
< 4; ++i
)
591 data
= (data
<< 8) | *src
++;
593 rc
= write_word8(info
, wp
, data
);
599 if (get_timer(start
) > 1000) { /* every second */
602 start
= get_timer(0);
610 * handle unaligned tail bytes
613 for (i
= 0, cp
= wp
; i
< 4 && cnt
> 0; ++i
, ++cp
) {
614 data
= (data
<< 8) | *src
++;
618 for (; i
< 4; ++i
, ++cp
)
619 data
= (data
<< 8) | (*(uchar
*) cp
);
621 return write_word8(info
, wp
, data
);
624 #define FLASH_WIDTH 4 /* flash bus width in bytes */
625 static int write_buff32(flash_info_t
*info
, uchar
*src
, ulong addr
,
632 start
= get_timer(0);
634 if (info
->flash_id
== FLASH_UNKNOWN
)
637 /* get lower FLASH_WIDTH aligned address */
638 wp
= (addr
& ~(FLASH_WIDTH
- 1));
641 * handle unaligned start bytes
643 if ((l
= addr
- wp
) != 0) {
645 for (i
= 0, cp
= wp
; i
< l
; ++i
, ++cp
)
646 data
= (data
<< 8) | (*(uchar
*) cp
);
648 for (; i
< FLASH_WIDTH
&& cnt
> 0; ++i
) {
649 data
= (data
<< 8) | *src
++;
654 for (; cnt
== 0 && i
< FLASH_WIDTH
; ++i
, ++cp
)
655 data
= (data
<< 8) | (*(uchar
*) cp
);
657 rc
= write_word32(info
, wp
, data
);
665 * handle FLASH_WIDTH aligned part
667 while (cnt
>= FLASH_WIDTH
) {
669 for (i
= 0; i
< FLASH_WIDTH
; ++i
)
670 data
= (data
<< 8) | *src
++;
672 rc
= write_word32(info
, wp
, data
);
678 if (get_timer(start
) > 990) { /* every second */
680 start
= get_timer(0);
688 * handle unaligned tail bytes
691 for (i
= 0, cp
= wp
; i
< FLASH_WIDTH
&& cnt
> 0; ++i
, ++cp
) {
692 data
= (data
<< 8) | *src
++;
696 for (; i
< FLASH_WIDTH
; ++i
, ++cp
)
697 data
= (data
<< 8) | (*(uchar
*) cp
);
699 return write_word32(info
, wp
, data
);
702 int write_buff(flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
706 if ((info
->flash_id
& FLASH_TYPEMASK
) == FLASH_AM040
)
707 retval
= write_buff8(info
, src
, addr
, cnt
);
709 retval
= write_buff32(info
, src
, addr
, cnt
);
715 * Write a word to Flash, returns:
718 * 2 - Flash not erased
721 static int write_word8(flash_info_t
*info
, ulong dest
, ulong data
)
723 volatile uchar
*addr2
= (uchar
*) (info
->start
[0]);
724 volatile uchar
*dest2
= (uchar
*) dest
;
725 volatile uchar
*data2
= (uchar
*) &data
;
727 int i
, tcode
, rcode
= 0;
729 /* Check if Flash is (sufficently) erased */
730 if ((*((volatile uchar
*)dest
) & (uchar
)data
) != (uchar
)data
)
733 for (i
= 0; i
< (4 / sizeof(uchar
)); i
++) {
734 /* Disable interrupts which might cause a timeout here */
735 flag
= disable_interrupts();
737 *(addr2
+ 0x555) = (uchar
) 0xAA;
738 *(addr2
+ 0x2aa) = (uchar
) 0x55;
739 *(addr2
+ 0x555) = (uchar
) 0xA0;
743 /* Wait for write to complete, up to 1ms */
744 tcode
= wait_for_DQ7((ulong
) &dest2
[i
], data2
[i
], 1);
746 /* re-enable interrupts if necessary */
750 /* Make sure we didn't timeout */
758 static int write_word32(flash_info_t
*info
, ulong dest
, ulong data
)
760 vu_long
*addr
= (vu_long
*) dest
;
765 /* Check if Flash is (sufficiently) erased */
766 if ((*addr
& data
) != data
)
769 /* Disable interrupts which might cause a timeout here */
770 flag
= disable_interrupts();
772 *addr
= 0x00400040; /* write setup */
775 /* re-enable interrupts if necessary */
779 start
= get_timer(0);
781 while (((status
= *addr
) & 0x00800080) != 0x00800080) {
783 if (get_timer(start
) > CONFIG_SYS_FLASH_WRITE_TOUT
) {
784 *addr
= 0x00FF00FF; /* restore read mode */
789 *addr
= 0x00FF00FF; /* restore read mode */
794 static int _flash_protect(flash_info_t
*info
, long sector
)
800 volatile long *addr
= (long *)sector
;
802 switch (info
->flash_id
& FLASH_TYPEMASK
) {
803 case FLASH_28F320J3A
:
804 case FLASH_28F640J3A
:
805 case FLASH_28F128J3A
:
806 /* Disable interrupts which might cause Flash to timeout */
807 flag
= disable_interrupts();
810 *addr
= 0x00500050L
; /* Clear the status register */
811 *addr
= 0x00600060L
; /* Set lock bit setup */
812 *addr
= 0x00010001L
; /* Set lock bit confirm */
814 /* Wait for command completion */
815 for (i
= 0; i
< 10; i
++) { /* 75us timeout, wait 100us */
817 if ((*addr
& 0x00800080L
) == 0x00800080L
)
821 /* Not successful? */
823 if (status
!= 0x00800080L
) {
824 printf("Protect %x sector failed: %x\n",
825 (uint
) sector
, (uint
) status
);
829 /* Restore read mode */
832 /* re-enable interrupts if necessary */
837 case FLASH_AM040
: /* No soft sector protection */
841 /* Turn protection on for this sector */
842 for (i
= 0; i
< info
->sector_count
; i
++) {
843 if (info
->start
[i
] == sector
) {
844 info
->protect
[i
] = 1;
852 static int _flash_unprotect(flash_info_t
*info
, long sector
)
858 volatile long *addr
= (long *) sector
;
860 switch (info
->flash_id
& FLASH_TYPEMASK
) {
861 case FLASH_28F320J3A
:
862 case FLASH_28F640J3A
:
863 case FLASH_28F128J3A
:
864 /* Disable interrupts which might cause Flash to timeout */
865 flag
= disable_interrupts();
867 *addr
= 0x00500050L
; /* Clear the status register */
868 *addr
= 0x00600060L
; /* Clear lock bit setup */
869 *addr
= 0x00D000D0L
; /* Clear lock bit confirm */
871 /* Wait for command completion */
872 for (i
= 0; i
< 80; i
++) { /* 700ms timeout, wait 800 */
873 udelay(10000); /* Delay 10ms */
874 if ((*addr
& 0x00800080L
) == 0x00800080L
)
878 /* Not successful? */
880 if (status
!= 0x00800080L
) {
881 printf("Un-protect %x sector failed: %x\n",
882 (uint
) sector
, (uint
) status
);
887 /* restore read mode */
890 /* re-enable interrupts if necessary */
895 case FLASH_AM040
: /* No soft sector protection */
900 * Fix Intel's little red wagon. Reprotect
901 * sectors that were protected before we undid
902 * protection on a specific sector.
904 for (i
= 0; i
< info
->sector_count
; i
++) {
905 if (info
->start
[i
] != sector
) {
906 if (info
->protect
[i
]) {
907 if (_flash_protect(info
, info
->start
[i
]))
910 } else /* Turn protection off for this sector */
911 info
->protect
[i
] = 0;
917 int flash_real_protect(flash_info_t
*info
, long sector
, int prot
)
922 rcode
= _flash_protect(info
, info
->start
[sector
]);
924 rcode
= _flash_unprotect(info
, info
->start
[sector
]);