3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
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,
25 * flash.c - flash support for the 512k, 8bit boot flash
26 and the 8MB 32bit extra flash on the DB64360
27 * most of this file was based on the existing U-Boot
30 * written or collected and sometimes rewritten by
31 * Ingo Assmus <ingo.assmus@keymile.com>
37 #include "../include/mv_gen_reg.h"
38 #include "../include/memory.h"
39 #include "intel_flash.h"
41 #define FLASH_ROM 0xFFFD /* unknown flash type */
42 #define FLASH_RAM 0xFFFE /* unknown flash type */
43 #define FLASH_MAN_UNKNOWN 0xFFFF0000
47 /* Intel flash commands */
48 int flash_erase_intel (flash_info_t * info, int s_first, int s_last);
49 int write_word_intel (bank_addr_t addr, bank_word_t value);
51 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
53 /*-----------------------------------------------------------------------
56 static ulong flash_get_size (int portwidth, vu_long * addr,
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 /*-----------------------------------------------------------------------
64 unsigned long flash_init (void)
67 unsigned long size_b0 = 0, size_b1 = 0;
68 unsigned long base, flash_size;
70 /* Init: no FLASHes known */
71 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
72 flash_info[i].flash_id = FLASH_UNKNOWN;
76 base = CFG_FLASH_BASE;
78 flash_get_size (CFG_BOOT_FLASH_WIDTH, (vu_long *) base,
81 printf ("[%ldkB@%lx] ", size_b0 / 1024, base);
83 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
84 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b0, size_b0 << 20);
87 base = memoryGetDeviceBaseAddress (CFG_EXTRA_FLASH_DEVICE);
88 /* base = memoryGetDeviceBaseAddress(DEV_CS3_BASE_ADDR);*/
89 for (i = 1; i < CFG_MAX_FLASH_BANKS; i++) {
91 flash_get_size (CFG_EXTRA_FLASH_WIDTH,
92 (vu_long *) base, &flash_info[i]);
94 printf ("[%ldMB@%lx] ", size >> 20, base);
96 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
98 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b1, size_b1 << 20);
106 flash_size = size_b0 + size_b1;
110 /*-----------------------------------------------------------------------
112 static void flash_get_offsets (ulong base, flash_info_t * info)
117 if (!info->sector_count)
120 /* set up sector start address table */
121 switch (info->flash_id & FLASH_TYPEMASK) {
123 case FLASH_28F128J3A:
124 case FLASH_28F640J3A:
126 /* this chip has uniformly spaced sectors */
127 sector_size = info->size / info->sector_count;
128 for (i = 0; i < info->sector_count; i++)
129 info->start[i] = base + (i * sector_size);
132 if (info->flash_id & FLASH_BTYPE) {
133 /* set sector offsets for bottom boot block type */
134 info->start[0] = base + 0x00000000;
135 info->start[1] = base + 0x00008000;
136 info->start[2] = base + 0x0000C000;
137 info->start[3] = base + 0x00010000;
138 for (i = 4; i < info->sector_count; i++) {
140 base + (i * 0x00020000) - 0x00060000;
143 /* set sector offsets for top boot block type */
144 i = info->sector_count - 1;
145 info->start[i--] = base + info->size - 0x00008000;
146 info->start[i--] = base + info->size - 0x0000C000;
147 info->start[i--] = base + info->size - 0x00010000;
148 for (; i >= 0; i--) {
149 info->start[i] = base + i * 0x00020000;
155 /*-----------------------------------------------------------------------
157 void flash_print_info (flash_info_t * info)
161 if (info->flash_id == FLASH_UNKNOWN) {
162 printf ("missing or unknown FLASH type\n");
166 switch (info->flash_id & FLASH_VENDMASK) {
176 case FLASH_MAN_INTEL:
180 printf ("Unknown Vendor ");
184 switch (info->flash_id & FLASH_TYPEMASK) {
186 printf ("AM29LV040B (4 Mbit, bottom boot sect)\n");
189 printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
192 printf ("AM29LV400T (4 Mbit, top boot sector)\n");
195 printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
198 printf ("AM29LV800T (8 Mbit, top boot sector)\n");
201 printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
204 printf ("AM29LV160T (16 Mbit, top boot sector)\n");
207 printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
210 printf ("AM29LV320T (32 Mbit, top boot sector)\n");
212 case FLASH_28F640J3A:
213 printf ("28F640J3A (64 Mbit)\n");
215 case FLASH_28F128J3A:
216 printf ("28F128J3A (128 Mbit)\n");
225 printf ("Unknown Chip Type\n");
229 if ((info->size >> 20) > 0) {
230 printf (" Size: %ld MB in %d Sectors\n",
231 info->size >> 20, info->sector_count);
233 printf (" Size: %ld kB in %d Sectors\n",
234 info->size >> 10, info->sector_count);
237 printf (" Sector Start Addresses:");
238 for (i = 0; i < info->sector_count; ++i) {
242 info->start[i], info->protect[i] ? " (RO)" : " ");
248 /*-----------------------------------------------------------------------
252 /*-----------------------------------------------------------------------
256 * The following code cannot be run from FLASH!
259 static inline void flash_cmd (int width, volatile unsigned char *addr,
260 int offset, unsigned char cmd)
262 /* supports 1x8, 1x16, and 2x16 */
263 /* 2x8 and 4x8 are not supported */
265 /* assuming chips are in 16 bit mode */
267 unsigned long cmd32 = (cmd << 16) | cmd;
269 *(volatile unsigned long *) (addr + offset * 2) = cmd32;
272 *(volatile unsigned char *) (addr + offset) = cmd;
277 flash_get_size (int portwidth, vu_long * addr, flash_info_t * info)
280 volatile unsigned char *caddr = (unsigned char *) addr;
281 volatile unsigned short *saddr = (unsigned short *) addr;
282 volatile unsigned long *laddr = (unsigned long *) addr;
284 ulong id = 0, manu = 0, base = (ulong) addr;
287 printf ("%s: enter\n", __FUNCTION__);
289 info->portwidth = portwidth;
293 flash_cmd (portwidth, caddr, 0, 0xf0);
294 flash_cmd (portwidth, caddr, 0, 0xf0);
302 if (old[0] != 0xf0) {
303 flash_cmd (portwidth, caddr, 0, 0xf0);
304 flash_cmd (portwidth, caddr, 0, 0xf0);
308 if (*caddr == 0xf0) {
309 /* this area is ROM */
311 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
312 info->sector_count = 8;
313 info->size = 0x80000;
314 flash_get_offsets (base, info);
323 /* this area is RAM */
325 info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
326 info->sector_count = 8;
327 info->size = 0x80000;
328 flash_get_offsets (base, info);
331 flash_cmd (portwidth, caddr, 0, 0xf0);
336 /* Write auto select command: read Manufacturer ID */
337 flash_cmd (portwidth, caddr, 0x555, 0xAA);
338 flash_cmd (portwidth, caddr, 0x2AA, 0x55);
339 flash_cmd (portwidth, caddr, 0x555, 0x90);
343 if ((caddr[0] == old[0]) && (caddr[1] == old[1])) {
345 /* this area is ROM */
346 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
347 info->sector_count = 8;
348 info->size = 0x80000;
349 flash_get_offsets (base, info);
353 printf ("%px%d: %02x:%02x -> %02x:%02x\n",
354 caddr, portwidth, old[0], old[1], caddr[0], caddr[1]);
377 flash_cmd (portwidth, caddr, 0, 0xf0);
379 printf ("\n%08lx:%08lx:%08lx\n", base, manu, id);
380 printf ("%08lx %08lx %08lx %08lx\n",
381 laddr[0], laddr[1], laddr[2], laddr[3]);
386 info->flash_id = FLASH_MAN_STM;
389 info->flash_id = FLASH_MAN_AMD;
392 info->flash_id = FLASH_MAN_FUJ;
395 info->flash_id = FLASH_MAN_INTEL;
398 flash_cmd (portwidth, caddr, 0, 0xf0);
400 printf ("Unknown Mfr [%08lx]:%08lx\n", manu, id);
401 info->flash_id = FLASH_UNKNOWN;
402 info->sector_count = 0;
404 return (0); /* no or unknown flash */
409 info->flash_id += FLASH_AM400T;
410 info->sector_count = 11;
411 info->size = 0x00100000;
416 info->flash_id += FLASH_AM400B;
417 info->sector_count = 11;
418 info->size = 0x00100000;
423 info->flash_id += FLASH_AM800T;
424 info->sector_count = 19;
425 info->size = 0x00200000;
430 info->flash_id += FLASH_AM800B;
431 info->sector_count = 19;
432 info->size = 0x00200000;
437 info->flash_id += FLASH_AM160T;
438 info->sector_count = 35;
439 info->size = 0x00400000;
444 info->flash_id += FLASH_AM160B;
445 info->sector_count = 35;
446 info->size = 0x00400000;
449 #if 0 /* enable when device IDs are available */
451 info->flash_id += FLASH_AM320T;
452 info->sector_count = 67;
453 info->size = 0x00800000;
457 info->flash_id += FLASH_AM320B;
458 info->sector_count = 67;
459 info->size = 0x00800000;
463 info->flash_id += FLASH_AM040;
464 info->sector_count = 8;
465 info->size = 0x80000;
467 break; /* => 512 kB */
469 case INTEL_ID_28F640J3A:
470 info->flash_id += FLASH_28F640J3A;
471 info->sector_count = 64;
472 info->size = 128 * 1024 * 64; /* 128kbytes x 64 blocks */
475 info->size *= 2; /* 2x16 */
478 case INTEL_ID_28F128J3A:
479 info->flash_id += FLASH_28F128J3A;
480 info->sector_count = 128;
481 info->size = 128 * 1024 * 128; /* 128kbytes x 128 blocks */
484 info->size *= 2; /* 2x16 */
488 flash_cmd (portwidth, caddr, 0, 0xf0);
490 printf ("Unknown id %lx:[%lx]\n", manu, id);
491 info->flash_id = FLASH_UNKNOWN;
493 return (0); /* => no or unknown flash */
497 flash_get_offsets (base, info);
500 /* check for protected sectors */
501 for (i = 0; i < info->sector_count; i++) {
502 /* read sector protection at sector address, (A7 .. A0)=0x02 */
503 /* D0 = 1 if protected */
504 caddr = (volatile unsigned char *) (info->start[i]);
505 saddr = (volatile unsigned short *) (info->start[i]);
506 laddr = (volatile unsigned long *) (info->start[i]);
508 info->protect[i] = caddr[2] & 1;
509 else if (portwidth == 2)
510 info->protect[i] = saddr[2] & 1;
512 info->protect[i] = laddr[2] & 1;
516 * Prevent writes to uninitialized FLASH.
518 if (info->flash_id != FLASH_UNKNOWN) {
519 caddr = (volatile unsigned char *) info->start[0];
521 flash_cmd (portwidth, caddr, 0, 0xF0); /* reset bank */
527 int flash_erase (flash_info_t * info, int s_first, int s_last)
529 volatile unsigned char *addr = (uchar *) (info->start[0]);
530 int flag, prot, sect, l_sect;
531 ulong start, now, last;
533 /* modified to support 2x16 Intel flash */
534 /* Note that the code will not exit on a flash erasure error or timeout */
535 /* but will print and error message and continue processing sectors */
536 /* until they are all erased. */
537 /* 10-16-2002 P. Marchese */
541 if (info->portwidth == 4)
543 printf ("- Warning: erasing of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
547 /* make sure it's Intel flash */
548 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
549 /* yup! it's an Intel flash */
550 /* is it 16-bits wide? */
551 if (info->chipwidth == 2) {
552 /* yup! it's 16-bits wide */
553 /* are there any sectors to process? */
554 if ((s_first < 0) || (s_first > s_last)) {
555 printf ("Error: There are no sectors to erase\n");
556 printf ("Either sector %d is less than zero\n", s_first);
557 printf ("or sector %d is greater than sector %d\n", s_first, s_last);
560 /* check for protected sectors */
562 for (sect = s_first; sect <= s_last; ++sect)
563 if (info->protect[sect])
565 /* if variable "prot" is nonzero, there are protected sectors */
567 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
568 /* reset the flash */
569 flash_cmd (info->portwidth, addr, 0,
571 /* Disable interrupts which might cause a timeout here */
572 flag = disable_interrupts ();
573 /* Clear the status register */
574 flash_cmd (info->portwidth, addr, 0,
576 flash_cmd (info->portwidth, addr, 0,
578 /* Start erase on unprotected sectors */
579 for (sect = s_first; sect <= s_last; sect++) {
580 /* is the sector unprotected? */
581 if (info->protect[sect] == 0) { /* not protected */
582 /* issue the single block erase command, 0x20 */
583 flash_cmd (info->portwidth,
588 /* issue the erase confirm command, 0xD0 */
589 flash_cmd (info->portwidth,
595 /* re-enable interrupts if necessary */
597 enable_interrupts ();
598 /* poll for erasure completion */
599 /* put flash into read status mode by writing 0x70 to it */
600 flash_cmd (info->portwidth,
603 /* setup the status register mask */
604 mask = CHIP_STAT_RDY |
605 (CHIP_STAT_RDY << 16);
606 /* init. the timeout counter */
607 start = get_timer (0);
608 /* keep looping while the flash is not ready */
609 /* exit the loop by timing out or the flash */
610 /* becomes ready again */
615 start[sect] & mask) !=
617 /* has the timeout limit been reached? */
618 if (get_timer (start)
620 CFG_FLASH_ERASE_TOUT)
622 /* timeout limit reached */
623 printf ("Time out limit reached erasing sector at address %08lx\n", info->start[sect]);
624 printf ("Continuing with next sector\n");
626 goto timed_out_error;
628 /* put flash into read status mode by writing 0x70 to it */
634 /* did we timeout? */
635 timed_out_error:if (timeout == 0)
637 /* didn't timeout, so check the status register */
638 /* create the status mask to check for errors */
639 mask = CHIP_STAT_ECLBS;
640 mask = mask | (mask <<
642 /* put flash into read status mode by writing 0x70 to it */
647 /* are there any errors? */
654 /* We got an erasure error */
655 printf ("Flash erasure error at address 0x%08lx\n", info->start[sect]);
656 printf ("Continuing with next sector\n");
657 /* reset the flash */
666 /* erasure completed without errors */
667 /* reset the flash */
668 flash_cmd (info->portwidth,
671 } /* end if not protected */
673 printf ("Flash erasure done\n");
676 /* The Intel flash is not 16-bit wide */
677 /* print and error message and return */
678 /* NOTE: you can add routines here to handle other size flash */
679 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
680 printf ("The erasure code only handles Intel 16-bit wide flash memory\n");
684 /* Not Intel flash so return an error as a write timeout */
685 /* NOTE: if it's another type flash, stick its routine here */
686 printf ("Error: The flash device is not Intel type\n");
687 printf ("The erasure code only supports Intel flash in a 32-bit port width\n");
692 /* end 32-bit wide flash code */
693 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
694 return 1; /* Rom can not be erased */
695 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { /* RAM just copy 0s to RAM */
696 for (sect = s_first; sect <= s_last; sect++) {
697 int sector_size = info->size / info->sector_count;
699 addr = (uchar *) (info->start[sect]);
700 memset ((void *) addr, 0, sector_size);
705 if ((s_first < 0) || (s_first > s_last)) {
706 if (info->flash_id == FLASH_UNKNOWN) {
707 printf ("- missing\n");
709 printf ("- no sectors to erase\n");
714 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { /* Intel works spezial */
715 return flash_erase_intel (info,
716 (unsigned short) s_first,
717 (unsigned short) s_last);
720 if ((info->flash_id == FLASH_UNKNOWN) || /* Flash is unknown to PPCBoot */
721 (info->flash_id > FLASH_AMD_COMP)) {
722 printf ("Can't erase unknown flash type %08lx - aborted\n",
729 for (sect = s_first; sect <= s_last; ++sect) {
730 if (info->protect[sect]) {
736 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
743 /* Disable interrupts which might cause a timeout here */
744 flag = disable_interrupts ();
746 flash_cmd (info->portwidth, addr, 0x555, 0xAA); /* start erase routine */
747 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
748 flash_cmd (info->portwidth, addr, 0x555, 0x80);
749 flash_cmd (info->portwidth, addr, 0x555, 0xAA);
750 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
752 /* Start erase on unprotected sectors */
753 for (sect = s_first; sect <= s_last; sect++) {
754 if (info->protect[sect] == 0) { /* not protected */
755 addr = (uchar *) (info->start[sect]);
756 flash_cmd (info->portwidth, addr, 0, 0x30);
761 /* re-enable interrupts if necessary */
763 enable_interrupts ();
765 /* wait at least 80us - let's wait 1 ms */
769 * We wait for the last triggered sector
774 start = get_timer (0);
776 addr = (volatile unsigned char *) (info->start[l_sect]);
777 /* broken for 2x16: TODO */
778 while ((addr[0] & 0x80) != 0x80) {
779 if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
780 printf ("Timeout\n");
783 /* show that we're waiting */
784 if ((now - last) > 1000) { /* every second */
791 /* reset to read mode */
792 addr = (volatile unsigned char *) info->start[0];
793 flash_cmd (info->portwidth, addr, 0, 0xf0);
794 flash_cmd (info->portwidth, addr, 0, 0xf0);
800 /*-----------------------------------------------------------------------
801 * Copy memory to flash, returns:
804 * 2 - Flash not erased
807 /* broken for 2x16: TODO */
808 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
813 /* Commented out since the below code should work for 32-bit(2x 16 flash) */
814 /* 10-16-2002 P. Marchese */
815 /* if(info->portwidth==4) return 1; */
816 /* if(info->portwidth==4) {
817 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
821 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
823 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
824 memcpy ((void *) addr, src, cnt);
828 wp = (addr & ~3); /* get lower word aligned address */
831 * handle unaligned start bytes
833 if ((l = addr - wp) != 0) {
835 for (i = 0, cp = wp; i < l; ++i, ++cp) {
836 data = (data << 8) | (*(uchar *) cp);
838 for (; i < 4 && cnt > 0; ++i) {
839 data = (data << 8) | *src++;
843 for (; cnt == 0 && i < 4; ++i, ++cp) {
844 data = (data << 8) | (*(uchar *) cp);
847 if ((rc = write_word (info, wp, data)) != 0) {
854 * handle word aligned part
858 for (i = 0; i < 4; ++i) {
859 data = (data << 8) | *src++;
861 if ((rc = write_word (info, wp, data)) != 0) {
873 * handle unaligned tail bytes
876 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
877 data = (data << 8) | *src++;
880 for (; i < 4; ++i, ++cp) {
881 data = (data << 8) | (*(uchar *) cp);
884 return (write_word (info, wp, data));
887 /*-----------------------------------------------------------------------
888 * Write a word to Flash, returns:
891 * 2 - Flash not erased
893 /* broken for 2x16: TODO */
894 static int write_word (flash_info_t * info, ulong dest, ulong data)
896 volatile unsigned char *addr = (uchar *) (info->start[0]);
901 /* modified so that it handles 32-bit(2x16 Intel flash programming */
902 /* 10-16-2002 P. Marchese */
904 if (info->portwidth == 4)
906 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
910 /* make sure it's Intel flash */
911 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
912 /* yup! it's an Intel flash */
913 /* is it 16-bits wide? */
914 if (info->chipwidth == 2) {
915 /* yup! it's 16-bits wide */
916 /* so we know how to program it */
917 /* reset the flash */
918 flash_cmd (info->portwidth, addr, 0,
920 /* Disable interrupts which might cause a timeout here */
921 flag = disable_interrupts ();
922 /* Clear the status register */
923 flash_cmd (info->portwidth, addr, 0,
925 flash_cmd (info->portwidth, addr, 0,
927 /* 1st cycle of word/byte program */
928 /* write 0x40 to the location to program */
929 flash_cmd (info->portwidth, (uchar *) dest, 0,
931 /* 2nd cycle of word/byte program */
932 /* write the data to the destination address */
933 *(ulong *) dest = data;
934 /* re-enable interrupts if necessary */
936 enable_interrupts ();
937 /* setup the status register mask */
938 mask = CHIP_STAT_RDY | (CHIP_STAT_RDY << 16);
939 /* put flash into read status mode by writing 0x70 to it */
940 flash_cmd (info->portwidth, addr, 0,
942 /* init. the timeout counter */
943 start = get_timer (0);
944 /* keep looping while the flash is not ready */
945 /* exit the loop by timing out or the flash */
946 /* becomes ready again */
947 /* 11-13-2002 Paul Marchese */
948 /* modified while loop conditional statement */
949 /* because we were always timing out. */
950 /* there is a type mismatch, "addr[0]" */
951 /* returns a byte but "mask" is a 32-bit value */
952 while ((*(volatile unsigned long *) info->
953 start[0] & mask) != mask)
955 /* while (addr[0] & mask) != mask) */
957 /* has the timeout limit been reached? */
958 if (get_timer (start) >
959 CFG_FLASH_WRITE_TOUT) {
960 /* timeout limit reached */
961 printf ("Time out limit reached programming address %08lx with data %08lx\n", dest, data);
962 /* reset the flash */
963 flash_cmd (info->portwidth,
968 /* put flash into read status mode by writing 0x70 to it */
969 flash_cmd (info->portwidth, addr, 0,
972 /* flash is ready, so check the status */
973 /* create the status mask to check for errors */
974 mask = CHIP_STAT_DPS | CHIP_STAT_VPPS |
976 mask = mask | (mask << 16);
977 /* put flash into read status mode by writing 0x70 to it */
978 flash_cmd (info->portwidth, addr, 0,
980 /* are there any errors? */
981 if ((addr[0] & mask) != 0) {
982 /* We got a one of the following errors: */
983 /* Voltage range, Device protect, or programming */
984 /* return the error as a device timeout */
985 /* put flash into read status mode by writing 0x70 to it */
986 flash_cmd (info->portwidth, addr, 0,
988 printf ("Flash programming error at address 0x%08lx\n", dest);
989 printf ("Flash status register contains 0x%08lx\n", (unsigned long) addr[0]);
990 /* reset the flash */
991 flash_cmd (info->portwidth, addr, 0,
995 /* write completed without errors */
996 /* reset the flash */
997 flash_cmd (info->portwidth, addr, 0,
1001 /* it's not 16-bits wide, so return an error as a write timeout */
1002 /* NOTE: you can add routines here to handle other size flash */
1003 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
1004 printf ("The write code only handles Intel 16-bit wide flash memory\n");
1008 /* not Intel flash so return an error as a write timeout */
1009 /* NOTE: if it's another type flash, stick its routine here */
1010 printf ("Error: The flash device is not Intel type\n");
1011 printf ("The code only supports Intel flash in a 32-bit port width\n");
1016 /* end of 32-bit flash code */
1017 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
1019 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
1020 *(unsigned long *) dest = data;
1023 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
1024 unsigned short low = data & 0xffff;
1025 unsigned short hi = (data >> 16) & 0xffff;
1026 int ret = write_word_intel ((bank_addr_t) dest, hi);
1029 ret = write_word_intel ((bank_addr_t) (dest + 2),
1035 /* Check if Flash is (sufficiently) erased */
1036 if ((*((vu_long *) dest) & data) != data) {
1039 /* Disable interrupts which might cause a timeout here */
1040 flag = disable_interrupts ();
1042 /* first, perform an unlock bypass command to speed up flash writes */
1047 /* write each byte out */
1048 for (i = 0; i < 4; i++) {
1049 char *data_ch = (char *) &data;
1052 *(((char *) dest) + i) = data_ch[i];
1053 udelay (10); /* XXX */
1056 /* we're done, now do an unlock bypass reset */
1060 /* re-enable interrupts if necessary */
1062 enable_interrupts ();
1064 /* data polling for D7 */
1065 start = get_timer (0);
1066 while ((*((vu_long *) dest) & 0x00800080) != (data & 0x00800080)) {
1067 if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {