9 * Originated from ppcboot-2.0.0/board/esd/cpci440/strataflash.c
12 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 #include <asm/processor.h>
38 * This file implements a Common Flash Interface (CFI) driver for ppcboot.
39 * The width of the port and the width of the chips are determined at initialization.
40 * These widths are used to calculate the address for access CFI data structures.
41 * It has been tested on an Intel Strataflash implementation.
44 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
45 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
46 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
47 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
50 * Use Primary Extended Query table (PRI) and Alternate Algorithm Query Table (ALT) to determine if protection is available
51 * Add support for other command sets Use the PRI and ALT to determine command set
52 * Verify erase and program timeouts.
55 #define FLASH_CMD_CFI 0x98
56 #define FLASH_CMD_READ_ID 0x90
57 #define FLASH_CMD_RESET 0xff
58 #define FLASH_CMD_BLOCK_ERASE 0x20
59 #define FLASH_CMD_ERASE_CONFIRM 0xD0
60 #define FLASH_CMD_WRITE 0x40
61 #define FLASH_CMD_PROTECT 0x60
62 #define FLASH_CMD_PROTECT_SET 0x01
63 #define FLASH_CMD_PROTECT_CLEAR 0xD0
64 #define FLASH_CMD_CLEAR_STATUS 0x50
65 #define FLASH_CMD_WRITE_TO_BUFFER 0xE8
66 #define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
68 #define FLASH_STATUS_DONE 0x80
69 #define FLASH_STATUS_ESS 0x40
70 #define FLASH_STATUS_ECLBS 0x20
71 #define FLASH_STATUS_PSLBS 0x10
72 #define FLASH_STATUS_VPENS 0x08
73 #define FLASH_STATUS_PSS 0x04
74 #define FLASH_STATUS_DPS 0x02
75 #define FLASH_STATUS_R 0x01
76 #define FLASH_STATUS_PROTECT 0x01
78 #define FLASH_OFFSET_CFI 0x55
79 #define FLASH_OFFSET_CFI_RESP 0x10
80 #define FLASH_OFFSET_WTOUT 0x1F
81 #define FLASH_OFFSET_WBTOUT 0x20
82 #define FLASH_OFFSET_ETOUT 0x21
83 #define FLASH_OFFSET_CETOUT 0x22
84 #define FLASH_OFFSET_WMAX_TOUT 0x23
85 #define FLASH_OFFSET_WBMAX_TOUT 0x24
86 #define FLASH_OFFSET_EMAX_TOUT 0x25
87 #define FLASH_OFFSET_CEMAX_TOUT 0x26
88 #define FLASH_OFFSET_SIZE 0x27
89 #define FLASH_OFFSET_INTERFACE 0x28
90 #define FLASH_OFFSET_BUFFER_SIZE 0x2A
91 #define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
92 #define FLASH_OFFSET_ERASE_REGIONS 0x2D
93 #define FLASH_OFFSET_PROTECT 0x02
94 #define FLASH_OFFSET_USER_PROTECTION 0x85
95 #define FLASH_OFFSET_INTEL_PROTECTION 0x81
97 #define FLASH_MAN_CFI 0x01000000
111 #define NUM_ERASE_REGIONS 4
113 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
115 /*-----------------------------------------------------------------------
119 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c);
120 static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf);
121 static void flash_write_cmd (flash_info_t * info, int sect, uchar offset,
123 static int flash_isequal (flash_info_t * info, int sect, uchar offset,
125 static int flash_isset (flash_info_t * info, int sect, uchar offset,
127 static int flash_detect_cfi (flash_info_t * info);
128 static ulong flash_get_size (ulong base, int banknum);
129 static int flash_write_cfiword (flash_info_t * info, ulong dest,
131 static int flash_full_status_check (flash_info_t * info, ulong sector,
132 ulong tout, char *prompt);
133 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
134 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
137 /*-----------------------------------------------------------------------
138 * create an address based on the offset and the port width
140 uchar *flash_make_addr (flash_info_t * info, int sect, int offset)
142 return ((uchar *) (info->start[sect] + (offset * info->chipwidth)));
145 /*-----------------------------------------------------------------------
146 * read a character at a port width address
148 uchar flash_read_uchar (flash_info_t * info, uchar offset)
150 if (info->portwidth == FLASH_CFI_8BIT) {
154 cp = flash_make_addr (info, 0, offset);
157 printf ("flash_read_uchar offset=%04x ptr=%08x c=%02x\n",
158 offset, (unsigned int) cp, c);
162 } else if (info->portwidth == FLASH_CFI_16BIT) {
167 sp = (ushort *) flash_make_addr (info, 0, offset);
171 printf ("flash_read_uchar offset=%04x ptr=%08x s=%04x c=%02x\n", offset, (unsigned int) sp, s, c);
180 /*-----------------------------------------------------------------------
181 * read a short word by swapping for ppc format.
183 ushort flash_read_ushort (flash_info_t * info, int sect, uchar offset)
185 if (info->portwidth == FLASH_CFI_8BIT) {
190 cp = flash_make_addr (info, 0, offset);
195 printf ("flash_read_ushort offset=%04x ptr=%08x c1=%02x c0=%02x s=%04x\n", offset, (unsigned int) cp, c1, c0, s);
199 } else if (info->portwidth == FLASH_CFI_16BIT) {
204 sp = (ushort *) flash_make_addr (info, 0, offset);
210 printf ("flash_read_ushort offset=%04x ptr=%08x c1=%02x c0=%02x s=%04x\n", offset, (unsigned int) sp, c1, c0, s);
219 /*-----------------------------------------------------------------------
220 * read a long word by picking the least significant byte of each maiximum
221 * port size word. Swap for ppc format.
223 ulong flash_read_long (flash_info_t * info, int sect, uchar offset)
225 if (info->portwidth == FLASH_CFI_8BIT) {
227 uchar c0, c1, c2, c3;
230 cp = flash_make_addr (info, 0, offset);
235 l = c3 << 24 | c2 << 16 | c1 << 8 | c0;
237 printf ("flash_read_long offset=%04x ptr=%08x c3=%02x c2=%02x c1=%02x c0=%02x l=%08x\n", offset, (unsigned int) cp, c3, c2, c1, c0, l);
241 } else if (info->portwidth == FLASH_CFI_16BIT) {
243 uchar c0, c1, c2, c3;
246 sp = (ushort *) flash_make_addr (info, 0, offset);
251 l = c3 << 24 | c2 << 16 | c1 << 8 | c0;
253 printf ("flash_read_long offset=%04x ptr=%08x c3=%02x c2=%02x c1=%02x c0=%02x l=%08x\n", offset, (unsigned int) sp, c3, c2, c1, c0, l);
262 /*-----------------------------------------------------------------------
264 unsigned long flash_init (void)
270 flash_info[0].flash_id = FLASH_UNKNOWN;
271 flash_info[0].portwidth = FLASH_CFI_16BIT;
272 flash_info[0].chipwidth = FLASH_CFI_16BIT;
273 size += flash_info[0].size = flash_get_size (CONFIG_SYS_PROGFLASH_BASE, 0);
274 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
275 printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", 1, flash_info[0].size, flash_info[0].size << 20);
278 flash_info[1].flash_id = FLASH_UNKNOWN;
279 flash_info[1].portwidth = FLASH_CFI_8BIT;
280 flash_info[1].chipwidth = FLASH_CFI_16BIT;
281 size += flash_info[1].size = flash_get_size (CONFIG_SYS_CONFFLASH_BASE, 1);
282 if (flash_info[1].flash_id == FLASH_UNKNOWN) {
283 printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", 2, flash_info[1].size, flash_info[1].size << 20);
289 /*-----------------------------------------------------------------------
291 int flash_erase (flash_info_t * info, int s_first, int s_last)
297 if (info->flash_id != FLASH_MAN_CFI) {
298 printf ("Can't erase unknown flash type - aborted\n");
301 if ((s_first < 0) || (s_first > s_last)) {
302 printf ("- no sectors to erase\n");
307 for (sect = s_first; sect <= s_last; ++sect) {
308 if (info->protect[sect]) {
313 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
318 for (sect = s_first; sect <= s_last; sect++) {
319 if (info->protect[sect] == 0) { /* not protected */
320 flash_write_cmd (info, sect, 0,
321 FLASH_CMD_CLEAR_STATUS);
322 flash_write_cmd (info, sect, 0,
323 FLASH_CMD_BLOCK_ERASE);
324 flash_write_cmd (info, sect, 0,
325 FLASH_CMD_ERASE_CONFIRM);
327 if (flash_full_status_check
328 (info, sect, info->erase_blk_tout, "erase")) {
338 /*-----------------------------------------------------------------------
340 void flash_print_info (flash_info_t * info)
344 if (info->flash_id != FLASH_MAN_CFI) {
345 printf ("missing or unknown FLASH type\n");
349 printf ("CFI conformant FLASH (x%d device in x%d mode)",
350 (info->chipwidth << 3), (info->portwidth << 3));
351 printf (" Size: %ld MB in %d Sectors\n",
352 info->size >> 20, info->sector_count);
353 printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", info->erase_blk_tout, info->write_tout, info->buffer_write_tout, info->buffer_size);
355 printf (" Sector Start Addresses:");
356 for (i = 0; i < info->sector_count; ++i) {
360 info->start[i], info->protect[i] ? " (RO)" : " ");
366 /*-----------------------------------------------------------------------
367 * Copy memory to flash, returns:
370 * 2 - Flash not erased
372 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
380 /* get lower aligned address */
381 wp = (addr & ~(info->portwidth - 1));
383 /* handle unaligned start */
384 if ((aln = addr - wp) != 0) {
387 for (i = 0; i < aln; ++i, ++cp)
388 flash_add_byte (info, &cword, (*(uchar *) cp));
390 for (; (i < info->portwidth) && (cnt > 0); i++) {
391 flash_add_byte (info, &cword, *src++);
395 for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp)
396 flash_add_byte (info, &cword, (*(uchar *) cp));
397 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
401 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
402 while (cnt >= info->portwidth) {
403 i = info->buffer_size > cnt ? cnt : info->buffer_size;
404 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
411 /* handle the aligned part */
412 while (cnt >= info->portwidth) {
414 for (i = 0; i < info->portwidth; i++) {
415 flash_add_byte (info, &cword, *src++);
417 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
419 wp += info->portwidth;
420 cnt -= info->portwidth;
422 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
428 * handle unaligned tail bytes
431 for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
432 flash_add_byte (info, &cword, *src++);
435 for (; i < info->portwidth; ++i, ++cp) {
436 flash_add_byte (info, &cword, (*(uchar *) cp));
439 return flash_write_cfiword (info, wp, cword);
442 /*-----------------------------------------------------------------------
444 int flash_real_protect (flash_info_t * info, long sector, int prot)
448 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
449 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
451 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
453 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
456 flash_full_status_check (info, sector, info->erase_blk_tout,
457 prot ? "protect" : "unprotect")) == 0) {
459 info->protect[sector] = prot;
460 /* Intel's unprotect unprotects all locking */
464 for (i = 0; i < info->sector_count; i++) {
465 if (info->protect[i])
466 flash_real_protect (info, i, 1);
474 /*-----------------------------------------------------------------------
475 * wait for XSR.7 to be set. Time out with an error if it does not.
476 * This routine does not set the flash to read-array mode.
478 static int flash_status_check (flash_info_t * info, ulong sector, ulong tout,
483 /* Wait for command completion */
484 start = get_timer (0);
485 while (!flash_isset (info, sector, 0, FLASH_STATUS_DONE)) {
486 if (get_timer (start) > info->erase_blk_tout) {
487 printf ("Flash %s timeout at address %lx\n", prompt,
488 info->start[sector]);
489 flash_write_cmd (info, sector, 0, FLASH_CMD_RESET);
496 /*-----------------------------------------------------------------------
497 * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
498 * This routine sets the flash to read-array mode.
500 static int flash_full_status_check (flash_info_t * info, ulong sector,
501 ulong tout, char *prompt)
505 retcode = flash_status_check (info, sector, tout, prompt);
506 if ((retcode == ERR_OK)
507 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
509 printf ("Flash %s error at address %lx\n", prompt,
510 info->start[sector]);
513 FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
514 printf ("Command Sequence Error.\n");
515 } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
516 printf ("Block Erase Error.\n");
517 retcode = ERR_NOT_ERASED;
518 } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
519 printf ("Locking Error\n");
521 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
522 printf ("Block locked.\n");
523 retcode = ERR_PROTECTED;
525 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
526 printf ("Vpp Low Error.\n");
528 flash_write_cmd (info, sector, 0, FLASH_CMD_RESET);
532 /*-----------------------------------------------------------------------
534 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
536 switch (info->portwidth) {
540 case FLASH_CFI_16BIT:
541 cword->w = (cword->w << 8) | c;
543 case FLASH_CFI_32BIT:
544 cword->l = (cword->l << 8) | c;
548 /*-----------------------------------------------------------------------
549 * make a proper sized command based on the port and chip widths
551 static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
554 uchar *cp = (uchar *) cmdbuf;
556 /* for(i=0; i< info->portwidth; i++) */
557 /* *cp++ = ((i+1) % info->chipwidth) ? '\0':cmd; */
558 if (info->portwidth == FLASH_CFI_8BIT
559 && info->chipwidth == FLASH_CFI_16BIT) {
561 } else if (info->portwidth == FLASH_CFI_16BIT
562 && info->chipwidth == FLASH_CFI_16BIT) {
569 * Write a proper sized command to the correct address
571 static void flash_write_cmd (flash_info_t * info, int sect, uchar offset,
575 volatile cfiptr_t addr;
578 addr.cp = flash_make_addr (info, sect, offset);
579 flash_make_cmd (info, cmd, &cword);
580 switch (info->portwidth) {
584 case FLASH_CFI_16BIT:
587 case FLASH_CFI_32BIT:
593 /*-----------------------------------------------------------------------
595 static int flash_isequal (flash_info_t * info, int sect, uchar offset,
602 cptr.cp = flash_make_addr (info, sect, offset);
603 flash_make_cmd (info, cmd, &cword);
604 switch (info->portwidth) {
606 retval = (cptr.cp[0] == cword.c);
608 case FLASH_CFI_16BIT:
609 retval = (cptr.wp[0] == cword.w);
611 case FLASH_CFI_32BIT:
612 retval = (cptr.lp[0] == cword.l);
621 /*-----------------------------------------------------------------------
623 static int flash_isset (flash_info_t * info, int sect, uchar offset,
630 cptr.cp = flash_make_addr (info, sect, offset);
631 flash_make_cmd (info, cmd, &cword);
632 switch (info->portwidth) {
634 retval = ((cptr.cp[0] & cword.c) == cword.c);
636 case FLASH_CFI_16BIT:
637 retval = ((cptr.wp[0] & cword.w) == cword.w);
639 case FLASH_CFI_32BIT:
640 retval = ((cptr.lp[0] & cword.l) == cword.l);
649 /*-----------------------------------------------------------------------
650 * detect if flash is compatible with the Common Flash Interface (CFI)
651 * http://www.jedec.org/download/search/jesd68.pdf
654 static int flash_detect_cfi (flash_info_t * info)
658 for (info->portwidth = FLASH_CFI_8BIT;
659 info->portwidth <= FLASH_CFI_32BIT; info->portwidth <<= 1) {
660 for (info->chipwidth = FLASH_CFI_BY8;
661 info->chipwidth <= info->portwidth;
662 info->chipwidth <<= 1) {
663 flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
664 flash_write_cmd (info, 0, FLASH_OFFSET_CFI,
667 (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
668 && flash_isequal (info, 0,
669 FLASH_OFFSET_CFI_RESP + 1, 'R')
670 && flash_isequal (info, 0,
671 FLASH_OFFSET_CFI_RESP + 2, 'Y'))
676 flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
677 flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI);
678 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') &&
679 flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') &&
680 flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
688 * The following code cannot be run from FLASH!
691 static ulong flash_get_size (ulong base, int banknum)
693 flash_info_t *info = &flash_info[banknum];
696 unsigned long sector;
699 uchar num_erase_regions;
700 int erase_region_size;
701 int erase_region_count;
703 info->start[0] = base;
705 if (flash_detect_cfi (info)) {
707 printf ("portwidth=%d chipwidth=%d\n", info->portwidth, info->chipwidth); /* test-only */
709 size_ratio = 1; /* info->portwidth / info->chipwidth; */
711 flash_read_uchar (info,
712 FLASH_OFFSET_NUM_ERASE_REGIONS);
714 printf ("found %d erase regions\n", num_erase_regions);
718 for (i = 0; i < num_erase_regions; i++) {
719 if (i > NUM_ERASE_REGIONS) {
720 printf ("%d erase regions found, only %d used\n", num_erase_regions, NUM_ERASE_REGIONS);
723 tmp = flash_read_long (info, 0,
724 FLASH_OFFSET_ERASE_REGIONS);
725 erase_region_count = (tmp & 0xffff) + 1;
728 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
729 for (j = 0; j < erase_region_count; j++) {
730 info->start[sect_cnt] = sector;
731 sector += (erase_region_size * size_ratio);
732 info->protect[sect_cnt] =
733 flash_isset (info, sect_cnt,
734 FLASH_OFFSET_PROTECT,
735 FLASH_STATUS_PROTECT);
740 info->sector_count = sect_cnt;
741 /* multiply the size by the number of chips */
743 (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) *
747 flash_read_ushort (info, 0,
748 FLASH_OFFSET_BUFFER_SIZE));
749 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
750 info->erase_blk_tout =
753 flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
754 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
755 info->buffer_write_tout =
758 flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
759 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT);
763 flash_read_uchar (info,
764 FLASH_OFFSET_WMAX_TOUT))) / 1000;
765 info->flash_id = FLASH_MAN_CFI;
768 flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
772 /*-----------------------------------------------------------------------
774 static int flash_write_cfiword (flash_info_t * info, ulong dest,
782 ctladdr.cp = flash_make_addr (info, 0, 0);
783 cptr.cp = (uchar *) dest;
785 /* Check if Flash is (sufficiently) erased */
786 switch (info->portwidth) {
788 flag = ((cptr.cp[0] & cword.c) == cword.c);
790 case FLASH_CFI_16BIT:
791 flag = ((cptr.wp[0] & cword.w) == cword.w);
793 case FLASH_CFI_32BIT:
794 flag = ((cptr.lp[0] & cword.l) == cword.l);
802 /* Disable interrupts which might cause a timeout here */
803 flag = disable_interrupts ();
805 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
806 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
808 switch (info->portwidth) {
810 cptr.cp[0] = cword.c;
812 case FLASH_CFI_16BIT:
813 cptr.wp[0] = cword.w;
815 case FLASH_CFI_32BIT:
816 cptr.lp[0] = cword.l;
820 /* re-enable interrupts if necessary */
822 enable_interrupts ();
824 return flash_full_status_check (info, 0, info->write_tout, "write");
827 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
829 /* loop through the sectors from the highest address
830 * when the passed address is greater or equal to the sector address
833 static int find_sector (flash_info_t * info, ulong addr)
837 for (sector = info->sector_count - 1; sector >= 0; sector--) {
838 if (addr >= info->start[sector])
844 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
851 volatile cfiptr_t src;
852 volatile cfiptr_t dst;
855 dst.cp = (uchar *) dest;
856 sector = find_sector (info, dest);
857 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
858 flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
860 flash_status_check (info, sector, info->buffer_write_tout,
861 "write to buffer")) == ERR_OK) {
862 switch (info->portwidth) {
866 case FLASH_CFI_16BIT:
869 case FLASH_CFI_32BIT:
876 flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
878 switch (info->portwidth) {
880 *dst.cp++ = *src.cp++;
882 case FLASH_CFI_16BIT:
883 *dst.wp++ = *src.wp++;
885 case FLASH_CFI_32BIT:
886 *dst.lp++ = *src.lp++;
893 flash_write_cmd (info, sector, 0,
894 FLASH_CMD_WRITE_BUFFER_CONFIRM);
896 flash_full_status_check (info, sector,
897 info->buffer_write_tout,
900 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
903 #endif /* CONFIG_SYS_USE_FLASH_BUFFER_WRITE */