3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
5 * SPDX-License-Identifier: GPL-2.0+
9 * flash.c - flash support for the 512k, 8bit boot flash
10 and the 8MB 32bit extra flash on the DB64360
11 * most of this file was based on the existing U-Boot
14 * written or collected and sometimes rewritten by
15 * Ingo Assmus <ingo.assmus@keymile.com>
21 #include "../include/mv_gen_reg.h"
22 #include "../include/memory.h"
23 #include "intel_flash.h"
25 #define FLASH_ROM 0xFFFD /* unknown flash type */
26 #define FLASH_RAM 0xFFFE /* unknown flash type */
27 #define FLASH_MAN_UNKNOWN 0xFFFF0000
31 /* Intel flash commands */
32 int flash_erase_intel (flash_info_t * info, int s_first, int s_last);
33 int write_word_intel (bank_addr_t addr, bank_word_t value);
35 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
37 /*-----------------------------------------------------------------------
40 static ulong flash_get_size (int portwidth, vu_long * addr,
42 static int write_word (flash_info_t * info, ulong dest, ulong data);
43 static void flash_get_offsets (ulong base, flash_info_t * info);
45 /*-----------------------------------------------------------------------
48 unsigned long flash_init (void)
51 unsigned long size_b0 = 0, size_b1 = 0;
52 unsigned long base, flash_size;
54 /* Init: no FLASHes known */
55 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
56 flash_info[i].flash_id = FLASH_UNKNOWN;
60 base = CONFIG_SYS_FLASH_BASE;
62 flash_get_size (CONFIG_SYS_BOOT_FLASH_WIDTH, (vu_long *) base,
65 printf ("[%ldkB@%lx] ", size_b0 / 1024, base);
67 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
68 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b0, size_b0 << 20);
71 base = memoryGetDeviceBaseAddress (CONFIG_SYS_EXTRA_FLASH_DEVICE);
72 /* base = memoryGetDeviceBaseAddress(DEV_CS3_BASE_ADDR);*/
73 for (i = 1; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
75 flash_get_size (CONFIG_SYS_EXTRA_FLASH_WIDTH,
76 (vu_long *) base, &flash_info[i]);
78 printf ("[%ldMB@%lx] ", size >> 20, base);
80 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
82 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b1, size_b1 << 20);
90 flash_size = size_b0 + size_b1;
94 /*-----------------------------------------------------------------------
96 static void flash_get_offsets (ulong base, flash_info_t * info)
101 if (!info->sector_count)
104 /* set up sector start address table */
105 switch (info->flash_id & FLASH_TYPEMASK) {
107 case FLASH_28F128J3A:
108 case FLASH_28F640J3A:
110 /* this chip has uniformly spaced sectors */
111 sector_size = info->size / info->sector_count;
112 for (i = 0; i < info->sector_count; i++)
113 info->start[i] = base + (i * sector_size);
116 if (info->flash_id & FLASH_BTYPE) {
117 /* set sector offsets for bottom boot block type */
118 info->start[0] = base + 0x00000000;
119 info->start[1] = base + 0x00008000;
120 info->start[2] = base + 0x0000C000;
121 info->start[3] = base + 0x00010000;
122 for (i = 4; i < info->sector_count; i++) {
124 base + (i * 0x00020000) - 0x00060000;
127 /* set sector offsets for top boot block type */
128 i = info->sector_count - 1;
129 info->start[i--] = base + info->size - 0x00008000;
130 info->start[i--] = base + info->size - 0x0000C000;
131 info->start[i--] = base + info->size - 0x00010000;
132 for (; i >= 0; i--) {
133 info->start[i] = base + i * 0x00020000;
139 /*-----------------------------------------------------------------------
141 void flash_print_info (flash_info_t * info)
145 if (info->flash_id == FLASH_UNKNOWN) {
146 printf ("missing or unknown FLASH type\n");
150 switch (info->flash_id & FLASH_VENDMASK) {
160 case FLASH_MAN_INTEL:
164 printf ("Unknown Vendor ");
168 switch (info->flash_id & FLASH_TYPEMASK) {
170 printf ("AM29LV040B (4 Mbit, bottom boot sect)\n");
173 printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
176 printf ("AM29LV400T (4 Mbit, top boot sector)\n");
179 printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
182 printf ("AM29LV800T (8 Mbit, top boot sector)\n");
185 printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
188 printf ("AM29LV160T (16 Mbit, top boot sector)\n");
191 printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
194 printf ("AM29LV320T (32 Mbit, top boot sector)\n");
196 case FLASH_28F640J3A:
197 printf ("28F640J3A (64 Mbit)\n");
199 case FLASH_28F128J3A:
200 printf ("28F128J3A (128 Mbit)\n");
209 printf ("Unknown Chip Type\n");
213 if ((info->size >> 20) > 0) {
214 printf (" Size: %ld MB in %d Sectors\n",
215 info->size >> 20, info->sector_count);
217 printf (" Size: %ld kB in %d Sectors\n",
218 info->size >> 10, info->sector_count);
221 printf (" Sector Start Addresses:");
222 for (i = 0; i < info->sector_count; ++i) {
226 info->start[i], info->protect[i] ? " (RO)" : " ");
232 /*-----------------------------------------------------------------------
236 /*-----------------------------------------------------------------------
240 * The following code cannot be run from FLASH!
243 static inline void flash_cmd (int width, volatile unsigned char *addr,
244 int offset, unsigned char cmd)
246 /* supports 1x8, 1x16, and 2x16 */
247 /* 2x8 and 4x8 are not supported */
249 /* assuming chips are in 16 bit mode */
251 unsigned long cmd32 = (cmd << 16) | cmd;
253 *(volatile unsigned long *) (addr + offset * 2) = cmd32;
256 *(volatile unsigned char *) (addr + offset) = cmd;
261 flash_get_size (int portwidth, vu_long * addr, flash_info_t * info)
264 volatile unsigned char *caddr = (unsigned char *) addr;
265 volatile unsigned short *saddr = (unsigned short *) addr;
266 volatile unsigned long *laddr = (unsigned long *) addr;
268 ulong id = 0, manu = 0, base = (ulong) addr;
271 printf ("%s: enter\n", __FUNCTION__);
273 info->portwidth = portwidth;
277 flash_cmd (portwidth, caddr, 0, 0xf0);
278 flash_cmd (portwidth, caddr, 0, 0xf0);
286 if (old[0] != 0xf0) {
287 flash_cmd (portwidth, caddr, 0, 0xf0);
288 flash_cmd (portwidth, caddr, 0, 0xf0);
292 if (*caddr == 0xf0) {
293 /* this area is ROM */
295 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
296 info->sector_count = 8;
297 info->size = 0x80000;
298 flash_get_offsets (base, info);
307 /* this area is RAM */
309 info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
310 info->sector_count = 8;
311 info->size = 0x80000;
312 flash_get_offsets (base, info);
315 flash_cmd (portwidth, caddr, 0, 0xf0);
320 /* Write auto select command: read Manufacturer ID */
321 flash_cmd (portwidth, caddr, 0x555, 0xAA);
322 flash_cmd (portwidth, caddr, 0x2AA, 0x55);
323 flash_cmd (portwidth, caddr, 0x555, 0x90);
327 if ((caddr[0] == old[0]) && (caddr[1] == old[1])) {
329 /* this area is ROM */
330 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
331 info->sector_count = 8;
332 info->size = 0x80000;
333 flash_get_offsets (base, info);
337 printf ("%px%d: %02x:%02x -> %02x:%02x\n",
338 caddr, portwidth, old[0], old[1], caddr[0], caddr[1]);
361 flash_cmd (portwidth, caddr, 0, 0xf0);
363 printf ("\n%08lx:%08lx:%08lx\n", base, manu, id);
364 printf ("%08lx %08lx %08lx %08lx\n",
365 laddr[0], laddr[1], laddr[2], laddr[3]);
370 info->flash_id = FLASH_MAN_STM;
373 info->flash_id = FLASH_MAN_AMD;
376 info->flash_id = FLASH_MAN_FUJ;
379 info->flash_id = FLASH_MAN_INTEL;
382 flash_cmd (portwidth, caddr, 0, 0xf0);
384 printf ("Unknown Mfr [%08lx]:%08lx\n", manu, id);
385 info->flash_id = FLASH_UNKNOWN;
386 info->sector_count = 0;
388 return (0); /* no or unknown flash */
393 info->flash_id += FLASH_AM400T;
394 info->sector_count = 11;
395 info->size = 0x00100000;
400 info->flash_id += FLASH_AM400B;
401 info->sector_count = 11;
402 info->size = 0x00100000;
407 info->flash_id += FLASH_AM800T;
408 info->sector_count = 19;
409 info->size = 0x00200000;
414 info->flash_id += FLASH_AM800B;
415 info->sector_count = 19;
416 info->size = 0x00200000;
421 info->flash_id += FLASH_AM160T;
422 info->sector_count = 35;
423 info->size = 0x00400000;
428 info->flash_id += FLASH_AM160B;
429 info->sector_count = 35;
430 info->size = 0x00400000;
433 #if 0 /* enable when device IDs are available */
435 info->flash_id += FLASH_AM320T;
436 info->sector_count = 67;
437 info->size = 0x00800000;
441 info->flash_id += FLASH_AM320B;
442 info->sector_count = 67;
443 info->size = 0x00800000;
447 info->flash_id += FLASH_AM040;
448 info->sector_count = 8;
449 info->size = 0x80000;
451 break; /* => 512 kB */
453 case INTEL_ID_28F640J3A:
454 info->flash_id += FLASH_28F640J3A;
455 info->sector_count = 64;
456 info->size = 128 * 1024 * 64; /* 128kbytes x 64 blocks */
459 info->size *= 2; /* 2x16 */
462 case INTEL_ID_28F128J3A:
463 info->flash_id += FLASH_28F128J3A;
464 info->sector_count = 128;
465 info->size = 128 * 1024 * 128; /* 128kbytes x 128 blocks */
468 info->size *= 2; /* 2x16 */
472 flash_cmd (portwidth, caddr, 0, 0xf0);
474 printf ("Unknown id %lx:[%lx]\n", manu, id);
475 info->flash_id = FLASH_UNKNOWN;
477 return (0); /* => no or unknown flash */
481 flash_get_offsets (base, info);
484 /* check for protected sectors */
485 for (i = 0; i < info->sector_count; i++) {
486 /* read sector protection at sector address, (A7 .. A0)=0x02 */
487 /* D0 = 1 if protected */
488 caddr = (volatile unsigned char *) (info->start[i]);
489 saddr = (volatile unsigned short *) (info->start[i]);
490 laddr = (volatile unsigned long *) (info->start[i]);
492 info->protect[i] = caddr[2] & 1;
493 else if (portwidth == 2)
494 info->protect[i] = saddr[2] & 1;
496 info->protect[i] = laddr[2] & 1;
500 * Prevent writes to uninitialized FLASH.
502 if (info->flash_id != FLASH_UNKNOWN) {
503 caddr = (volatile unsigned char *) info->start[0];
505 flash_cmd (portwidth, caddr, 0, 0xF0); /* reset bank */
511 int flash_erase (flash_info_t * info, int s_first, int s_last)
513 volatile unsigned char *addr = (uchar *) (info->start[0]);
514 int flag, prot, sect, l_sect;
515 ulong start, now, last;
517 /* modified to support 2x16 Intel flash */
518 /* Note that the code will not exit on a flash erasure error or timeout */
519 /* but will print and error message and continue processing sectors */
520 /* until they are all erased. */
521 /* 10-16-2002 P. Marchese */
525 if (info->portwidth == 4)
527 printf ("- Warning: erasing of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
531 /* make sure it's Intel flash */
532 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
533 /* yup! it's an Intel flash */
534 /* is it 16-bits wide? */
535 if (info->chipwidth == 2) {
536 /* yup! it's 16-bits wide */
537 /* are there any sectors to process? */
538 if ((s_first < 0) || (s_first > s_last)) {
539 printf ("Error: There are no sectors to erase\n");
540 printf ("Either sector %d is less than zero\n", s_first);
541 printf ("or sector %d is greater than sector %d\n", s_first, s_last);
544 /* check for protected sectors */
546 for (sect = s_first; sect <= s_last; ++sect)
547 if (info->protect[sect])
549 /* if variable "prot" is nonzero, there are protected sectors */
551 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
552 /* reset the flash */
553 flash_cmd (info->portwidth, addr, 0,
555 /* Disable interrupts which might cause a timeout here */
556 flag = disable_interrupts ();
557 /* Clear the status register */
558 flash_cmd (info->portwidth, addr, 0,
560 flash_cmd (info->portwidth, addr, 0,
562 /* Start erase on unprotected sectors */
563 for (sect = s_first; sect <= s_last; sect++) {
564 /* is the sector unprotected? */
565 if (info->protect[sect] == 0) { /* not protected */
566 /* issue the single block erase command, 0x20 */
567 flash_cmd (info->portwidth,
572 /* issue the erase confirm command, 0xD0 */
573 flash_cmd (info->portwidth,
579 /* re-enable interrupts if necessary */
581 enable_interrupts ();
582 /* poll for erasure completion */
583 /* put flash into read status mode by writing 0x70 to it */
584 flash_cmd (info->portwidth,
587 /* setup the status register mask */
588 mask = CHIP_STAT_RDY |
589 (CHIP_STAT_RDY << 16);
590 /* init. the timeout counter */
591 start = get_timer (0);
592 /* keep looping while the flash is not ready */
593 /* exit the loop by timing out or the flash */
594 /* becomes ready again */
599 start[sect] & mask) !=
601 /* has the timeout limit been reached? */
602 if (get_timer (start)
604 CONFIG_SYS_FLASH_ERASE_TOUT)
606 /* timeout limit reached */
607 printf ("Time out limit reached erasing sector at address %08lx\n", info->start[sect]);
608 printf ("Continuing with next sector\n");
610 goto timed_out_error;
612 /* put flash into read status mode by writing 0x70 to it */
618 /* did we timeout? */
619 timed_out_error:if (timeout == 0)
621 /* didn't timeout, so check the status register */
622 /* create the status mask to check for errors */
623 mask = CHIP_STAT_ECLBS;
624 mask = mask | (mask <<
626 /* put flash into read status mode by writing 0x70 to it */
631 /* are there any errors? */
638 /* We got an erasure error */
639 printf ("Flash erasure error at address 0x%08lx\n", info->start[sect]);
640 printf ("Continuing with next sector\n");
641 /* reset the flash */
650 /* erasure completed without errors */
651 /* reset the flash */
652 flash_cmd (info->portwidth,
655 } /* end if not protected */
657 printf ("Flash erasure done\n");
660 /* The Intel flash is not 16-bit wide */
661 /* print and error message and return */
662 /* NOTE: you can add routines here to handle other size flash */
663 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
664 printf ("The erasure code only handles Intel 16-bit wide flash memory\n");
668 /* Not Intel flash so return an error as a write timeout */
669 /* NOTE: if it's another type flash, stick its routine here */
670 printf ("Error: The flash device is not Intel type\n");
671 printf ("The erasure code only supports Intel flash in a 32-bit port width\n");
676 /* end 32-bit wide flash code */
677 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
678 return 1; /* Rom can not be erased */
679 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { /* RAM just copy 0s to RAM */
680 for (sect = s_first; sect <= s_last; sect++) {
681 int sector_size = info->size / info->sector_count;
683 addr = (uchar *) (info->start[sect]);
684 memset ((void *) addr, 0, sector_size);
689 if ((s_first < 0) || (s_first > s_last)) {
690 if (info->flash_id == FLASH_UNKNOWN) {
691 printf ("- missing\n");
693 printf ("- no sectors to erase\n");
698 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { /* Intel works spezial */
699 return flash_erase_intel (info,
700 (unsigned short) s_first,
701 (unsigned short) s_last);
704 if ((info->flash_id == FLASH_UNKNOWN) || /* Flash is unknown to PPCBoot */
705 (info->flash_id > FLASH_AMD_COMP)) {
706 printf ("Can't erase unknown flash type %08lx - aborted\n",
713 for (sect = s_first; sect <= s_last; ++sect) {
714 if (info->protect[sect]) {
720 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
727 /* Disable interrupts which might cause a timeout here */
728 flag = disable_interrupts ();
730 flash_cmd (info->portwidth, addr, 0x555, 0xAA); /* start erase routine */
731 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
732 flash_cmd (info->portwidth, addr, 0x555, 0x80);
733 flash_cmd (info->portwidth, addr, 0x555, 0xAA);
734 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
736 /* Start erase on unprotected sectors */
737 for (sect = s_first; sect <= s_last; sect++) {
738 if (info->protect[sect] == 0) { /* not protected */
739 addr = (uchar *) (info->start[sect]);
740 flash_cmd (info->portwidth, addr, 0, 0x30);
745 /* re-enable interrupts if necessary */
747 enable_interrupts ();
749 /* wait at least 80us - let's wait 1 ms */
753 * We wait for the last triggered sector
758 start = get_timer (0);
760 addr = (volatile unsigned char *) (info->start[l_sect]);
761 /* broken for 2x16: TODO */
762 while ((addr[0] & 0x80) != 0x80) {
763 if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
764 printf ("Timeout\n");
767 /* show that we're waiting */
768 if ((now - last) > 1000) { /* every second */
775 /* reset to read mode */
776 addr = (volatile unsigned char *) info->start[0];
777 flash_cmd (info->portwidth, addr, 0, 0xf0);
778 flash_cmd (info->portwidth, addr, 0, 0xf0);
784 /*-----------------------------------------------------------------------
785 * Copy memory to flash, returns:
788 * 2 - Flash not erased
791 /* broken for 2x16: TODO */
792 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
797 /* Commented out since the below code should work for 32-bit(2x 16 flash) */
798 /* 10-16-2002 P. Marchese */
799 /* if(info->portwidth==4) return 1; */
800 /* if(info->portwidth==4) {
801 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
805 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
807 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
808 memcpy ((void *) addr, src, cnt);
812 wp = (addr & ~3); /* get lower word aligned address */
815 * handle unaligned start bytes
817 if ((l = addr - wp) != 0) {
819 for (i = 0, cp = wp; i < l; ++i, ++cp) {
820 data = (data << 8) | (*(uchar *) cp);
822 for (; i < 4 && cnt > 0; ++i) {
823 data = (data << 8) | *src++;
827 for (; cnt == 0 && i < 4; ++i, ++cp) {
828 data = (data << 8) | (*(uchar *) cp);
831 if ((rc = write_word (info, wp, data)) != 0) {
838 * handle word aligned part
842 for (i = 0; i < 4; ++i) {
843 data = (data << 8) | *src++;
845 if ((rc = write_word (info, wp, data)) != 0) {
857 * handle unaligned tail bytes
860 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
861 data = (data << 8) | *src++;
864 for (; i < 4; ++i, ++cp) {
865 data = (data << 8) | (*(uchar *) cp);
868 return (write_word (info, wp, data));
871 /*-----------------------------------------------------------------------
872 * Write a word to Flash, returns:
875 * 2 - Flash not erased
877 /* broken for 2x16: TODO */
878 static int write_word (flash_info_t * info, ulong dest, ulong data)
880 volatile unsigned char *addr = (uchar *) (info->start[0]);
885 /* modified so that it handles 32-bit(2x16 Intel flash programming */
886 /* 10-16-2002 P. Marchese */
888 if (info->portwidth == 4)
890 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
894 /* make sure it's Intel flash */
895 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
896 /* yup! it's an Intel flash */
897 /* is it 16-bits wide? */
898 if (info->chipwidth == 2) {
899 /* yup! it's 16-bits wide */
900 /* so we know how to program it */
901 /* reset the flash */
902 flash_cmd (info->portwidth, addr, 0,
904 /* Disable interrupts which might cause a timeout here */
905 flag = disable_interrupts ();
906 /* Clear the status register */
907 flash_cmd (info->portwidth, addr, 0,
909 flash_cmd (info->portwidth, addr, 0,
911 /* 1st cycle of word/byte program */
912 /* write 0x40 to the location to program */
913 flash_cmd (info->portwidth, (uchar *) dest, 0,
915 /* 2nd cycle of word/byte program */
916 /* write the data to the destination address */
917 *(ulong *) dest = data;
918 /* re-enable interrupts if necessary */
920 enable_interrupts ();
921 /* setup the status register mask */
922 mask = CHIP_STAT_RDY | (CHIP_STAT_RDY << 16);
923 /* put flash into read status mode by writing 0x70 to it */
924 flash_cmd (info->portwidth, addr, 0,
926 /* init. the timeout counter */
927 start = get_timer (0);
928 /* keep looping while the flash is not ready */
929 /* exit the loop by timing out or the flash */
930 /* becomes ready again */
931 /* 11-13-2002 Paul Marchese */
932 /* modified while loop conditional statement */
933 /* because we were always timing out. */
934 /* there is a type mismatch, "addr[0]" */
935 /* returns a byte but "mask" is a 32-bit value */
936 while ((*(volatile unsigned long *) info->
937 start[0] & mask) != mask)
939 /* while (addr[0] & mask) != mask) */
941 /* has the timeout limit been reached? */
942 if (get_timer (start) >
943 CONFIG_SYS_FLASH_WRITE_TOUT) {
944 /* timeout limit reached */
945 printf ("Time out limit reached programming address %08lx with data %08lx\n", dest, data);
946 /* reset the flash */
947 flash_cmd (info->portwidth,
952 /* put flash into read status mode by writing 0x70 to it */
953 flash_cmd (info->portwidth, addr, 0,
956 /* flash is ready, so check the status */
957 /* create the status mask to check for errors */
958 mask = CHIP_STAT_DPS | CHIP_STAT_VPPS |
960 mask = mask | (mask << 16);
961 /* put flash into read status mode by writing 0x70 to it */
962 flash_cmd (info->portwidth, addr, 0,
964 /* are there any errors? */
965 if ((addr[0] & mask) != 0) {
966 /* We got a one of the following errors: */
967 /* Voltage range, Device protect, or programming */
968 /* return the error as a device timeout */
969 /* put flash into read status mode by writing 0x70 to it */
970 flash_cmd (info->portwidth, addr, 0,
972 printf ("Flash programming error at address 0x%08lx\n", dest);
973 printf ("Flash status register contains 0x%08lx\n", (unsigned long) addr[0]);
974 /* reset the flash */
975 flash_cmd (info->portwidth, addr, 0,
979 /* write completed without errors */
980 /* reset the flash */
981 flash_cmd (info->portwidth, addr, 0,
985 /* it's not 16-bits wide, so return an error as a write timeout */
986 /* NOTE: you can add routines here to handle other size flash */
987 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
988 printf ("The write code only handles Intel 16-bit wide flash memory\n");
992 /* not Intel flash so return an error as a write timeout */
993 /* NOTE: if it's another type flash, stick its routine here */
994 printf ("Error: The flash device is not Intel type\n");
995 printf ("The code only supports Intel flash in a 32-bit port width\n");
1000 /* end of 32-bit flash code */
1001 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
1003 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
1004 *(unsigned long *) dest = data;
1007 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
1008 unsigned short low = data & 0xffff;
1009 unsigned short hi = (data >> 16) & 0xffff;
1010 int ret = write_word_intel ((bank_addr_t) dest, hi);
1013 ret = write_word_intel ((bank_addr_t) (dest + 2),
1019 /* Check if Flash is (sufficiently) erased */
1020 if ((*((vu_long *) dest) & data) != data) {
1023 /* Disable interrupts which might cause a timeout here */
1024 flag = disable_interrupts ();
1026 /* first, perform an unlock bypass command to speed up flash writes */
1031 /* write each byte out */
1032 for (i = 0; i < 4; i++) {
1033 char *data_ch = (char *) &data;
1036 *(((char *) dest) + i) = data_ch[i];
1037 udelay (10); /* XXX */
1040 /* we're done, now do an unlock bypass reset */
1044 /* re-enable interrupts if necessary */
1046 enable_interrupts ();
1048 /* data polling for D7 */
1049 start = get_timer (0);
1050 while ((*((vu_long *) dest) & 0x00800080) != (data & 0x00800080)) {
1051 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {