Patch by Yuli Barcohen, 22 Aug 2004:

- remove ZPC.1900 board-specific flash driver;
  switch the port to generic CFI driver;
- port clean-up

1 files changed, 0 insertions, 818 deletions

diff --git a/board/zpc1900/flash.c b/board/zpc1900/flash.c
deleted file mode 100644
index d515dbc..0000000
--- a/board/zpc1900/flash.c
+++ /dev/null
@@ -1,818 +0,0 @@
-/*
- * (C) Copyright 2002
- * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
- *
- * Copyright (C) 2003 Arabella Software Ltd.
- * Yuli Barcohen <yuli@arabellasw.com>
- * Modified to work with AMD flashes
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/processor.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 and AMD 29F016D.
- *
- * 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 AMD_CMD_RESET			0xF0
-#define AMD_CMD_WRITE			0xA0
-#define AMD_CMD_ERASE_START		0x80
-#define AMD_CMD_ERASE_SECTOR		0x30
-
-#define AMD_STATUS_TOGGLE		0x40
-#define AMD_STATUS_ERROR		0x20
-
-#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 {
-	volatile unsigned char  *cp;
-	volatile unsigned short *wp;
-	volatile unsigned long  *lp;
-} cfiptr_t;
-
-#define NUM_ERASE_REGIONS 4
-
-static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
-
-flash_info_t flash_info[CFG_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, uint offset, uchar cmd);
-static void flash_unlock_seq(flash_info_t *info);
-static int flash_isequal(flash_info_t * info, int sect, uint offset, uchar cmd);
-static int flash_isset(flash_info_t * info, int sect, uint offset, uchar cmd);
-static int flash_toggle(flash_info_t * info, int sect, uint 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 CFG_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, uint 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, uint 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,  uint 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,  uint 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 = 0;
-	int i;
-
-	/* Init: no FLASHes known */
-	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
-		flash_info[i].flash_id = FLASH_UNKNOWN;
-		size += flash_info[i].size = flash_get_size(bank_base[i], i);
-		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
-			printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
-				i, flash_info[i].size, flash_info[i].size << 20);
-		}
-	}
-
-	/* Monitor protection ON by default */
-#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-	flash_protect(FLAG_PROTECT_SET,
-		      CFG_MONITOR_BASE,
-		      CFG_MONITOR_BASE + monitor_flash_len - 1,
-		      &flash_info[0]);
-#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 */
-#ifdef INTEL_COMMANDS
-			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);
-#else
-			flash_unlock_seq(info);
-			flash_write_cmd(info, sect, 0x555, AMD_CMD_ERASE_START);
-			flash_unlock_seq(info);
-			flash_write_cmd(info, sect, 0, AMD_CMD_ERASE_SECTOR);
-#endif
-
-			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 CFG_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 /* CFG_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);
-}
-
-/*-----------------------------------------------------------------------
- */
-#ifdef CFG_FLASH_PROTECTION
-
-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;
-}
-
-#endif /* CFG_FLASH_PROTECTION */
-/*-----------------------------------------------------------------------
- *  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 (
-#ifdef INTEL_COMMANDS
-		!flash_isset(info, sector, 0, FLASH_STATUS_DONE)
-#else
-		flash_toggle(info, sector, 0, AMD_STATUS_TOGGLE)
-#endif
-	      ) {
-		if (get_timer(start) > info->erase_blk_tout) {
-			printf("Flash %s timeout at address %lx\n", prompt, info->start[sector]);
-#ifdef INTEL_COMMANDS
-			flash_write_cmd(info, sector, 0, FLASH_CMD_RESET);
-#else
-			flash_write_cmd(info, sector, 0, AMD_CMD_RESET);
-#endif
-			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);
-#ifdef INTEL_COMMANDS
-	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);
-#endif
-	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, uint 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 void flash_unlock_seq(flash_info_t *info)
-{
-	flash_write_cmd(info, 0, 0x555, 0xAA);
-	flash_write_cmd(info, 0, 0x2AA, 0x55);
-}
-/*-----------------------------------------------------------------------
- */
-static int flash_isequal(flash_info_t * info, int sect, uint 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, uint 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;
-}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_toggle(flash_info_t * info, int sect, uint 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) != (cptr.cp[0] & cword.c));
-		break;
-	case FLASH_CFI_16BIT:
-		retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
-		break;
-	case FLASH_CFI_32BIT:
-		retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & 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;
-	uchar num_erase_regions;
-	int  erase_region_size;
-	int  erase_region_count;
-
-	info->start[0] = base;
-
-	if(flash_detect_cfi(info)){
-		size_ratio = info->portwidth / info->chipwidth;
-		num_erase_regions = flash_read_uchar(info, FLASH_OFFSET_NUM_ERASE_REGIONS);
-#ifdef DEBUG_FLASH
-		printf("found %d erase regions\n", num_erase_regions);
-#endif
-		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);
-	return(info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-static int flash_write_cfiword (flash_info_t *info, ulong dest, cfiword_t cword)
-{
-
-	cfiptr_t ctladdr;
-	cfiptr_t cptr;
-	int flag;
-
-	ctladdr.cp = flash_make_addr(info, 0, 0);
-	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();
-
-#ifdef INTEL_COMMANDS
-	flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS);
-	flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE);
-#else
-	flash_unlock_seq(info);
-	flash_write_cmd(info, 0, 0x555, AMD_CMD_WRITE);
-#endif
-
-	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 CFG_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 /* CFG_USE_FLASH_BUFFER_WRITE */