diff options
Diffstat (limited to 'board/esd/cpci5200/strataflash.c')
| -rw-r--r-- | board/esd/cpci5200/strataflash.c | 786 |
1 files changed, 0 insertions, 786 deletions
diff --git a/board/esd/cpci5200/strataflash.c b/board/esd/cpci5200/strataflash.c deleted file mode 100644 index 7dc2e58..0000000 --- a/board/esd/cpci5200/strataflash.c +++ /dev/null @@ -1,786 +0,0 @@ -/* - * (C) Copyright 2002 - * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/processor.h> -#include <asm/cache.h> - -#undef DEBUG_FLASH -/* - * This file implements a Common Flash Interface (CFI) driver for U-Boot. - * The width of the port and the width of the chips are determined at initialization. - * These widths are used to calculate the address for access CFI data structures. - * It has been tested on an Intel Strataflash implementation. - * - * References - * JEDEC Standard JESD68 - Common Flash Interface (CFI) - * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes - * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets - * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet - * - * TODO - * Use Primary Extended Query table (PRI) and Alternate Algorithm Query Table (ALT) to determine if protection is available - * Add support for other command sets Use the PRI and ALT to determine command set - * Verify erase and program timeouts. - */ - -#define FLASH_CMD_CFI 0x98 -#define FLASH_CMD_READ_ID 0x90 -#define FLASH_CMD_RESET 0xff -#define FLASH_CMD_BLOCK_ERASE 0x20 -#define FLASH_CMD_ERASE_CONFIRM 0xD0 -#define FLASH_CMD_WRITE 0x40 -#define FLASH_CMD_PROTECT 0x60 -#define FLASH_CMD_PROTECT_SET 0x01 -#define FLASH_CMD_PROTECT_CLEAR 0xD0 -#define FLASH_CMD_CLEAR_STATUS 0x50 -#define FLASH_CMD_WRITE_TO_BUFFER 0xE8 -#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 - -#define FLASH_STATUS_DONE 0x80 -#define FLASH_STATUS_ESS 0x40 -#define FLASH_STATUS_ECLBS 0x20 -#define FLASH_STATUS_PSLBS 0x10 -#define FLASH_STATUS_VPENS 0x08 -#define FLASH_STATUS_PSS 0x04 -#define FLASH_STATUS_DPS 0x02 -#define FLASH_STATUS_R 0x01 -#define FLASH_STATUS_PROTECT 0x01 - -#define FLASH_OFFSET_CFI 0x55 -#define FLASH_OFFSET_CFI_RESP 0x10 -#define FLASH_OFFSET_WTOUT 0x1F -#define FLASH_OFFSET_WBTOUT 0x20 -#define FLASH_OFFSET_ETOUT 0x21 -#define FLASH_OFFSET_CETOUT 0x22 -#define FLASH_OFFSET_WMAX_TOUT 0x23 -#define FLASH_OFFSET_WBMAX_TOUT 0x24 -#define FLASH_OFFSET_EMAX_TOUT 0x25 -#define FLASH_OFFSET_CEMAX_TOUT 0x26 -#define FLASH_OFFSET_SIZE 0x27 -#define FLASH_OFFSET_INTERFACE 0x28 -#define FLASH_OFFSET_BUFFER_SIZE 0x2A -#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C -#define FLASH_OFFSET_ERASE_REGIONS 0x2D -#define FLASH_OFFSET_PROTECT 0x02 -#define FLASH_OFFSET_USER_PROTECTION 0x85 -#define FLASH_OFFSET_INTEL_PROTECTION 0x81 - -#define FLASH_MAN_CFI 0x01000000 - -typedef union { - unsigned char c; - unsigned short w; - unsigned long l; -} cfiword_t; - -typedef union { - unsigned char *cp; - unsigned short *wp; - unsigned long *lp; -} cfiptr_t; - -#define NUM_ERASE_REGIONS 4 - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * Functions - */ - -static void flash_add_byte(flash_info_t * info, cfiword_t * cword, uchar c); -static void flash_make_cmd(flash_info_t * info, uchar cmd, void *cmdbuf); -static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, - uchar cmd); -static int flash_isequal(flash_info_t * info, int sect, uchar offset, - uchar cmd); -static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd); -static int flash_detect_cfi(flash_info_t * info); -static ulong flash_get_size(ulong base, int banknum); -static int flash_write_cfiword(flash_info_t * info, ulong dest, - cfiword_t cword); -static int flash_full_status_check(flash_info_t * info, ulong sector, - ulong tout, char *prompt); -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE -static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, - int len); -#endif -/*----------------------------------------------------------------------- - * create an address based on the offset and the port width - */ -inline uchar *flash_make_addr(flash_info_t * info, int sect, int offset) -{ - return ((uchar *) (info->start[sect] + (offset * info->portwidth))); -} - -/*----------------------------------------------------------------------- - * read a character at a port width address - */ -inline uchar flash_read_uchar(flash_info_t * info, uchar offset) -{ - uchar *cp; - cp = flash_make_addr(info, 0, offset); - return (cp[info->portwidth - 1]); -} - -/*----------------------------------------------------------------------- - * read a short word by swapping for ppc format. - */ -ushort flash_read_ushort(flash_info_t * info, int sect, uchar offset) -{ - uchar *addr; - - addr = flash_make_addr(info, sect, offset); - return ((addr[(2 * info->portwidth) - 1] << 8) | - addr[info->portwidth - 1]); - -} - -/*----------------------------------------------------------------------- - * read a long word by picking the least significant byte of each maiximum - * port size word. Swap for ppc format. - */ -ulong flash_read_long(flash_info_t * info, int sect, uchar offset) -{ - uchar *addr; - - addr = flash_make_addr(info, sect, offset); - return ((addr[(2 * info->portwidth) - 1] << 24) | - (addr[(info->portwidth) - 1] << 16) | - (addr[(4 * info->portwidth) - 1] << 8) | - addr[(3 * info->portwidth) - 1]); - -} - -/*----------------------------------------------------------------------- - */ -unsigned long flash_init(void) -{ - unsigned long size; - int i; - unsigned long address; - - /* The flash is positioned back to back, with the demultiplexing of the chip - * based on the A24 address line. - * - */ - - address = CONFIG_SYS_FLASH_BASE; - size = 0; - - /* Init: no FLASHes known */ - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - size += flash_info[i].size = flash_get_size(address, i); - address += CONFIG_SYS_FLASH_INCREMENT; - if (flash_info[i].flash_id == FLASH_UNKNOWN) { - printf - ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", - i, flash_info[0].size, flash_info[i].size << 20); - } - } - -#if 0 /* test-only */ - /* Monitor protection ON by default */ -#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) - for (i = 0; - flash_info[0].start[i] < CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1; - i++) - (void)flash_real_protect(&flash_info[0], i, 1); -#endif -#endif - - return (size); -} - -/*----------------------------------------------------------------------- - */ -int flash_erase(flash_info_t * info, int s_first, int s_last) -{ - int rcode = 0; - int prot; - int sect; - - if (info->flash_id != FLASH_MAN_CFI) { - printf("Can't erase unknown flash type - aborted\n"); - return 1; - } - if ((s_first < 0) || (s_first > s_last)) { - printf("- no sectors to erase\n"); - return 1; - } - - prot = 0; - for (sect = s_first; sect <= s_last; ++sect) { - if (info->protect[sect]) { - prot++; - } - } - if (prot) { - printf("- Warning: %d protected sectors will not be erased!\n", - prot); - } else { - printf("\n"); - } - - for (sect = s_first; sect <= s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - flash_write_cmd(info, sect, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd(info, sect, 0, FLASH_CMD_BLOCK_ERASE); - flash_write_cmd(info, sect, 0, FLASH_CMD_ERASE_CONFIRM); - - if (flash_full_status_check - (info, sect, info->erase_blk_tout, "erase")) { - rcode = 1; - } else - printf("."); - } - } - printf(" done\n"); - return rcode; -} - -/*----------------------------------------------------------------------- - */ -void flash_print_info(flash_info_t * info) -{ - int i; - - if (info->flash_id != FLASH_MAN_CFI) { - printf("missing or unknown FLASH type\n"); - return; - } - - printf("CFI conformant FLASH (%d x %d)", - (info->portwidth << 3), (info->chipwidth << 3)); - printf(" Size: %ld MB in %d Sectors\n", - info->size >> 20, info->sector_count); - 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); - - printf(" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - if ((i % 5) == 0) - printf("\n"); - printf(" %08lX%5s", - info->start[i], info->protect[i] ? " (RO)" : " "); - } - printf("\n"); - return; -} - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - ulong wp; - ulong cp; - int aln; - cfiword_t cword; - int i, rc; - - /* get lower aligned address */ - wp = (addr & ~(info->portwidth - 1)); - - /* handle unaligned start */ - if ((aln = addr - wp) != 0) { - cword.l = 0; - cp = wp; - for (i = 0; i < aln; ++i, ++cp) - flash_add_byte(info, &cword, (*(uchar *) cp)); - - for (; (i < info->portwidth) && (cnt > 0); i++) { - flash_add_byte(info, &cword, *src++); - cnt--; - cp++; - } - for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp) - flash_add_byte(info, &cword, (*(uchar *) cp)); - if ((rc = flash_write_cfiword(info, wp, cword)) != 0) - return rc; - wp = cp; - } -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE - while (cnt >= info->portwidth) { - i = info->buffer_size > cnt ? cnt : info->buffer_size; - if ((rc = flash_write_cfibuffer(info, wp, src, i)) != ERR_OK) - return rc; - wp += i; - src += i; - cnt -= i; - } -#else - /* handle the aligned part */ - while (cnt >= info->portwidth) { - cword.l = 0; - for (i = 0; i < info->portwidth; i++) { - flash_add_byte(info, &cword, *src++); - } - if ((rc = flash_write_cfiword(info, wp, cword)) != 0) - return rc; - wp += info->portwidth; - cnt -= info->portwidth; - } -#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - cword.l = 0; - for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) { - flash_add_byte(info, &cword, *src++); - --cnt; - } - for (; i < info->portwidth; ++i, ++cp) { - flash_add_byte(info, &cword, (*(uchar *) cp)); - } - - return flash_write_cfiword(info, wp, cword); -} - -/*----------------------------------------------------------------------- - */ -int flash_real_protect(flash_info_t * info, long sector, int prot) -{ - int retcode = 0; - - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); - if (prot) - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET); - else - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR); - - if ((retcode = - flash_full_status_check(info, sector, info->erase_blk_tout, - prot ? "protect" : "unprotect")) == 0) { - - info->protect[sector] = prot; - /* Intel's unprotect unprotects all locking */ - if (prot == 0) { - int i; - for (i = 0; i < info->sector_count; i++) { - if (info->protect[i]) - flash_real_protect(info, i, 1); - } - } - } - - return retcode; -} - -/*----------------------------------------------------------------------- - * wait for XSR.7 to be set. Time out with an error if it does not. - * This routine does not set the flash to read-array mode. - */ -static int flash_status_check(flash_info_t * info, ulong sector, ulong tout, - char *prompt) -{ - ulong start; - - /* Wait for command completion */ - start = get_timer(0); - while (!flash_isset(info, sector, 0, FLASH_STATUS_DONE)) { - if (get_timer(start) > info->erase_blk_tout) { - printf("Flash %s timeout at address %lx\n", prompt, - info->start[sector]); - flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); - return ERR_TIMOUT; - } - } - return ERR_OK; -} - -/*----------------------------------------------------------------------- - * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check. - * This routine sets the flash to read-array mode. - */ -static int flash_full_status_check(flash_info_t * info, ulong sector, - ulong tout, char *prompt) -{ - int retcode; - retcode = flash_status_check(info, sector, tout, prompt); - if ((retcode == ERR_OK) - && !flash_isequal(info, sector, 0, FLASH_STATUS_DONE)) { - retcode = ERR_INVAL; - printf("Flash %s error at address %lx\n", prompt, - info->start[sector]); - if (flash_isset - (info, sector, 0, - FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) { - printf("Command Sequence Error.\n"); - } else if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS)) { - printf("Block Erase Error.\n"); - retcode = ERR_NOT_ERASED; - } else if (flash_isset(info, sector, 0, FLASH_STATUS_PSLBS)) { - printf("Locking Error\n"); - } - if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) { - printf("Block locked.\n"); - retcode = ERR_PROTECTED; - } - if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS)) - printf("Vpp Low Error.\n"); - } - flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); - return retcode; -} - -/*----------------------------------------------------------------------- - */ -static void flash_add_byte(flash_info_t * info, cfiword_t * cword, uchar c) -{ - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cword->c = c; - break; - case FLASH_CFI_16BIT: - cword->w = (cword->w << 8) | c; - break; - case FLASH_CFI_32BIT: - cword->l = (cword->l << 8) | c; - } -} - -/*----------------------------------------------------------------------- - * make a proper sized command based on the port and chip widths - */ -static void flash_make_cmd(flash_info_t * info, uchar cmd, void *cmdbuf) -{ - int i; - uchar *cp = (uchar *) cmdbuf; - for (i = 0; i < info->portwidth; i++) - *cp++ = ((i + 1) % info->chipwidth) ? '\0' : cmd; -} - -/* - * Write a proper sized command to the correct address - */ -static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, - uchar cmd) -{ - - volatile cfiptr_t addr; - cfiword_t cword; - addr.cp = flash_make_addr(info, sect, offset); - flash_make_cmd(info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: - *addr.cp = cword.c; - break; - case FLASH_CFI_16BIT: - *addr.wp = cword.w; - break; - case FLASH_CFI_32BIT: - *addr.lp = cword.l; - break; - } -} - -/*----------------------------------------------------------------------- - */ -static int flash_isequal(flash_info_t * info, int sect, uchar offset, uchar cmd) -{ - cfiptr_t cptr; - cfiword_t cword; - int retval; - cptr.cp = flash_make_addr(info, sect, offset); - flash_make_cmd(info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: - retval = (cptr.cp[0] == cword.c); - break; - case FLASH_CFI_16BIT: - retval = (cptr.wp[0] == cword.w); - break; - case FLASH_CFI_32BIT: - retval = (cptr.lp[0] == cword.l); - break; - default: - retval = 0; - break; - } - return retval; -} - -/*----------------------------------------------------------------------- - */ -static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd) -{ - cfiptr_t cptr; - cfiword_t cword; - int retval; - cptr.cp = flash_make_addr(info, sect, offset); - flash_make_cmd(info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: - retval = ((cptr.cp[0] & cword.c) == cword.c); - break; - case FLASH_CFI_16BIT: - retval = ((cptr.wp[0] & cword.w) == cword.w); - break; - case FLASH_CFI_32BIT: - retval = ((cptr.lp[0] & cword.l) == cword.l); - break; - default: - retval = 0; - break; - } - return retval; -} - -/*----------------------------------------------------------------------- - * detect if flash is compatible with the Common Flash Interface (CFI) - * http://www.jedec.org/download/search/jesd68.pdf - * - */ -static int flash_detect_cfi(flash_info_t * info) -{ - - for (info->portwidth = FLASH_CFI_8BIT; - info->portwidth <= FLASH_CFI_32BIT; info->portwidth <<= 1) { - for (info->chipwidth = FLASH_CFI_BY8; - info->chipwidth <= info->portwidth; - info->chipwidth <<= 1) { - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); - flash_write_cmd(info, 0, FLASH_OFFSET_CFI, - FLASH_CMD_CFI); - if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') - && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, - 'R') - && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, - 'Y')) - return 1; - } - } - return 0; -} - -/* - * The following code cannot be run from FLASH! - * - */ -static ulong flash_get_size(ulong base, int banknum) -{ - flash_info_t *info = &flash_info[banknum]; - int i, j; - int sect_cnt; - unsigned long sector; - unsigned long tmp; - int size_ratio = 0; - uchar num_erase_regions; - int erase_region_size; - int erase_region_count; - - info->start[0] = base; -#if 0 - invalidate_dcache_range(base, base + 0x400); -#endif - if (flash_detect_cfi(info)) { - - size_ratio = info->portwidth / info->chipwidth; - num_erase_regions = - flash_read_uchar(info, FLASH_OFFSET_NUM_ERASE_REGIONS); - - sect_cnt = 0; - sector = base; - for (i = 0; i < num_erase_regions; i++) { - if (i > NUM_ERASE_REGIONS) { - printf("%d erase regions found, only %d used\n", - num_erase_regions, NUM_ERASE_REGIONS); - break; - } - tmp = - flash_read_long(info, 0, - FLASH_OFFSET_ERASE_REGIONS); - erase_region_size = - (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; - tmp >>= 16; - erase_region_count = (tmp & 0xffff) + 1; - for (j = 0; j < erase_region_count; j++) { - info->start[sect_cnt] = sector; - sector += (erase_region_size * size_ratio); - info->protect[sect_cnt] = - flash_isset(info, sect_cnt, - FLASH_OFFSET_PROTECT, - FLASH_STATUS_PROTECT); - sect_cnt++; - } - } - - info->sector_count = sect_cnt; - /* multiply the size by the number of chips */ - info->size = - (1 << flash_read_uchar(info, FLASH_OFFSET_SIZE)) * - size_ratio; - info->buffer_size = - (1 << flash_read_ushort(info, 0, FLASH_OFFSET_BUFFER_SIZE)); - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_ETOUT); - info->erase_blk_tout = - (tmp * - (1 << flash_read_uchar(info, FLASH_OFFSET_EMAX_TOUT))); - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WBTOUT); - info->buffer_write_tout = - (tmp * - (1 << flash_read_uchar(info, FLASH_OFFSET_WBMAX_TOUT))); - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WTOUT); - info->write_tout = - (tmp * - (1 << flash_read_uchar(info, FLASH_OFFSET_WMAX_TOUT))) / - 1000; - info->flash_id = FLASH_MAN_CFI; - } - - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); -#ifdef DEBUG_FLASH - printf("portwidth=%d chipwidth=%d\n", info->portwidth, info->chipwidth); /* test-only */ -#endif -#ifdef DEBUG_FLASH - printf("found %d erase regions\n", num_erase_regions); -#endif -#ifdef DEBUG_FLASH - printf("size=%08x sectors=%08x \n", info->size, info->sector_count); -#endif - return (info->size); -} - -/*----------------------------------------------------------------------- - */ -static int flash_write_cfiword(flash_info_t * info, ulong dest, cfiword_t cword) -{ - - cfiptr_t cptr; - int flag; - - cptr.cp = (uchar *)dest; - - /* Check if Flash is (sufficiently) erased */ - switch (info->portwidth) { - case FLASH_CFI_8BIT: - flag = ((cptr.cp[0] & cword.c) == cword.c); - break; - case FLASH_CFI_16BIT: - flag = ((cptr.wp[0] & cword.w) == cword.w); - break; - case FLASH_CFI_32BIT: - flag = ((cptr.lp[0] & cword.l) == cword.l); - break; - default: - return 2; - } - if (!flag) - return 2; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE); - - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cptr.cp[0] = cword.c; - break; - case FLASH_CFI_16BIT: - cptr.wp[0] = cword.w; - break; - case FLASH_CFI_32BIT: - cptr.lp[0] = cword.l; - break; - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - return flash_full_status_check(info, 0, info->write_tout, "write"); -} - -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE - -/* loop through the sectors from the highest address - * when the passed address is greater or equal to the sector address - * we have a match - */ -static int find_sector(flash_info_t * info, ulong addr) -{ - int sector; - for (sector = info->sector_count - 1; sector >= 0; sector--) { - if (addr >= info->start[sector]) - break; - } - return sector; -} - -static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, - int len) -{ - - int sector; - int cnt; - int retcode; - volatile cfiptr_t src; - volatile cfiptr_t dst; - - src.cp = cp; - dst.cp = (uchar *) dest; - sector = find_sector(info, dest); - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); - if ((retcode = flash_status_check(info, sector, info->buffer_write_tout, - "write to buffer")) == ERR_OK) { - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cnt = len; - break; - case FLASH_CFI_16BIT: - cnt = len >> 1; - break; - case FLASH_CFI_32BIT: - cnt = len >> 2; - break; - default: - return ERR_INVAL; - break; - } - flash_write_cmd(info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) { - switch (info->portwidth) { - case FLASH_CFI_8BIT: - *dst.cp++ = *src.cp++; - break; - case FLASH_CFI_16BIT: - *dst.wp++ = *src.wp++; - break; - case FLASH_CFI_32BIT: - *dst.lp++ = *src.lp++; - break; - default: - return ERR_INVAL; - break; - } - } - flash_write_cmd(info, sector, 0, - FLASH_CMD_WRITE_BUFFER_CONFIRM); - retcode = - flash_full_status_check(info, sector, - info->buffer_write_tout, - "buffer write"); - } - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); - return retcode; -} -#endif /* CONFIG_SYS_USE_FLASH_BUFFER_WRITE */ |