cfi_flash: remove old driver and switch to new one

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 0 insertions, 997 deletions

diff --git a/drivers/nor/cfi_flash_new.c b/drivers/nor/cfi_flash_new.c
deleted file mode 100644
index 88432c8507..0000000000
--- a/drivers/nor/cfi_flash_new.c
+++ /dev/null
@@ -1,997 +0,0 @@
-/*
- * (C) Copyright 2002-2004
- * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
- *
- * Copyright (C) 2003 Arabella Software Ltd.
- * Yuli Barcohen <yuli@arabellasw.com>
- *
- * Copyright (C) 2004
- * Ed Okerson
- *
- * Copyright (C) 2006
- * Tolunay Orkun <listmember@orkun.us>
- *
- * 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
- *
- */
-
-/* The DEBUG define must be before common to enable debugging */
-/* #define DEBUG	*/
-
-#include <common.h>
-#include <asm/byteorder.h>
-#include <environment.h>
-#include <clock.h>
-#include <init.h>
-#include <malloc.h>
-#include <cfi_flash_new.h>
-#include <asm/io.h>
-#include <errno.h>
-
-/*
- * This file implements a Common Flash Interface (CFI) driver for barebox.
- * 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.
- *
- * 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
- * AMD CFI Specification, Release 2.0 December 1, 2001
- * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
- *   Device IDs, Publication Number 25538 Revision A, November 8, 2001
- *
- */
-
-#define NUM_ERASE_REGIONS	4 /* max. number of erase regions */
-
-static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT};
-
-/*
- * Check if chip width is defined. If not, start detecting with 8bit.
- */
-#ifndef CFG_FLASH_CFI_WIDTH
-#define CFG_FLASH_CFI_WIDTH	FLASH_CFI_8BIT
-#endif
-
-
-/*
- * Functions
- */
-
-static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
-{
-#if defined(__LITTLE_ENDIAN)
-	unsigned short	w;
-	unsigned int	l;
-	unsigned long long ll;
-#endif
-
-	if (bankwidth_is_1(info)) {
-		cword->c = c;
-	} else if (bankwidth_is_2(info)) {
-#if defined(__LITTLE_ENDIAN)
-		w = c;
-		w <<= 8;
-		cword->w = (cword->w >> 8) | w;
-#else
-		cword->w = (cword->w << 8) | c;
-#endif
-	} else if (bankwidth_is_4(info)) {
-#if defined(__LITTLE_ENDIAN)
-		l = c;
-		l <<= 24;
-		cword->l = (cword->l >> 8) | l;
-#else
-		cword->l = (cword->l << 8) | c;
-#endif
-	} else if (bankwidth_is_8(info)) {
-#if defined(__LITTLE_ENDIAN)
-		ll = c;
-		ll <<= 56;
-		cword->ll = (cword->ll >> 8) | ll;
-#else
-		cword->ll = (cword->ll << 8) | c;
-#endif
-	}
-}
-
-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 */
-	if (bankwidth_is_1(info)) {
-		flag = ((cptr.cp[0] & cword.c) == cword.c);
-	} else if (bankwidth_is_2(info)) {
-		flag = ((cptr.wp[0] & cword.w) == cword.w);
-	} else if (bankwidth_is_4(info)) {
-		flag = ((cptr.lp[0] & cword.l) == cword.l);
-	} else if (bankwidth_is_8(info)) {
-		flag = ((cptr.llp[0] & cword.ll) == cword.ll);
-	} else
-		return 2;
-
-	if (!flag)
-		return 2;
-
-	/* Disable interrupts which might cause a timeout here */
-//	flag = disable_interrupts ();
-
-	info->cfi_cmd_set->flash_prepare_write(info);
-
-	if (bankwidth_is_1(info)) {
-		cptr.cp[0] = cword.c;
-	} else if (bankwidth_is_2(info)) {
-		cptr.wp[0] = cword.w;
-	} else if (bankwidth_is_4(info)) {
-		cptr.lp[0] = cword.l;
-	} else if (bankwidth_is_8(info)) {
-		cptr.llp[0] = cword.ll;
-	}
-
-	/* re-enable interrupts if necessary */
-	if (flag)
-		enable_interrupts ();
-
-	return flash_status_check (info, find_sector (info, dest),
-					info->write_tout, "write");
-}
-
-#ifdef DEBUG
-/*
- * Debug support
- */
-void print_longlong (char *str, unsigned long long data)
-{
-	int i;
-	char *cp;
-
-	cp = (unsigned char *) &data;
-	for (i = 0; i < 8; i++)
-		sprintf (&str[i * 2], "%2.2x", *cp++);
-}
-
-static void flash_printqry (flash_info_t * info, flash_sect_t sect)
-{
-	cfiptr_t cptr;
-	int x, y;
-
-	for (x = 0; x < 0x40; x += 16U / info->portwidth) {
-		cptr.cp =
-			flash_make_addr (info, sect,
-					 x + FLASH_OFFSET_CFI_RESP);
-		debug ("%p : ", cptr.cp);
-		for (y = 0; y < 16; y++) {
-			debug ("%2.2x ", cptr.cp[y]);
-		}
-		debug (" ");
-		for (y = 0; y < 16; y++) {
-			if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) {
-				debug ("%c", cptr.cp[y]);
-			} else {
-				debug (".");
-			}
-		}
-		debug ("\n");
-	}
-}
-#endif
-
-/*
- * read a short word by swapping for ppc format.
- */
-static ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset)
-{
-	uchar *addr;
-	ushort retval;
-
-#ifdef DEBUG
-	int x;
-#endif
-	addr = flash_make_addr (info, sect, offset);
-
-#ifdef DEBUG
-	debug ("ushort addr is at %p info->portwidth = %d\n", addr,
-	       info->portwidth);
-	for (x = 0; x < 2 * info->portwidth; x++) {
-		debug ("addr[%x] = 0x%x\n", x, addr[x]);
-	}
-#endif
-#if defined(__LITTLE_ENDIAN)
-	retval = ((addr[(info->portwidth)] << 8) | addr[0]);
-#else
-	retval = ((addr[(2 * info->portwidth) - 1] << 8) |
-		  addr[info->portwidth - 1]);
-#endif
-
-	debug ("retval = 0x%x\n", retval);
-	return retval;
-}
-
-/*
- * read a long word by picking the least significant byte of each maximum
- * port size word. Swap for ppc format.
- */
-static ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
-{
-	uchar *addr;
-	ulong retval;
-
-#ifdef DEBUG
-	int x;
-#endif
-	addr = flash_make_addr (info, sect, offset);
-
-#ifdef DEBUG
-	debug ("long addr is at %p info->portwidth = %d\n", addr,
-	       info->portwidth);
-	for (x = 0; x < 4 * info->portwidth; x++) {
-		debug ("addr[%x] = 0x%x\n", x, addr[x]);
-	}
-#endif
-#if defined(__LITTLE_ENDIAN)
-	retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) |
-		(addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8);
-#else
-	retval = (addr[(2 * info->portwidth) - 1] << 24) |
-		(addr[(info->portwidth) - 1] << 16) |
-		(addr[(4 * info->portwidth) - 1] << 8) |
-		addr[(3 * info->portwidth) - 1];
-#endif
-	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)
-{
-	int cfi_offset;
-	debug ("flash detect cfi\n");
-
-	for (info->portwidth = CFG_FLASH_CFI_WIDTH;
-	     info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
-		for (info->chipwidth = FLASH_CFI_BY8;
-		     info->chipwidth <= info->portwidth;
-		     info->chipwidth <<= 1) {
-			flash_write_cmd (info, 0, 0, info->cmd_reset);
-			for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) {
-				flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], 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')) {
-					info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
-					info->cfi_offset=flash_offset_cfi[cfi_offset];
-					debug ("device interface is %d\n",
-						info->interface);
-					debug ("found port %d chip %d ",
-						info->portwidth, info->chipwidth);
-					debug ("port %d bits chip %d bits\n",
-						info->portwidth << CFI_FLASH_SHIFT_WIDTH,
-						info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
-					return 1;
-				}
-			}
-		}
-	}
-	debug ("not found\n");
-	return 0;
-}
-
-/*
- * The following code cannot be run from FLASH!
- */
-static ulong flash_get_size (flash_info_t *info, ulong base)
-{
-	int i, j;
-	flash_sect_t sect_cnt;
-	unsigned long sector;
-	unsigned long tmp;
-	int size_ratio;
-	uchar num_erase_regions;
-	int erase_region_size;
-	int erase_region_count;
-	int geometry_reversed = 0;
-
-	info->ext_addr = 0;
-	info->cfi_version = 0;
-#ifdef CFG_FLASH_PROTECTION
-	info->legacy_unlock = 0;
-#endif
-
-	/* first only malloc space for the first sector */
-	info->start = malloc(sizeof(ulong));
-
-	info->start[0] = base;
-	info->protect = 0;
-
-	if (flash_detect_cfi (info)) {
-		info->vendor = flash_read_ushort (info, 0,
-					FLASH_OFFSET_PRIMARY_VENDOR);
-		switch (info->vendor) {
-#ifdef CONFIG_DRIVER_CFI_INTEL
-		case CFI_CMDSET_INTEL_EXTENDED:
-		case CFI_CMDSET_INTEL_STANDARD:
-			info->cfi_cmd_set = &cfi_cmd_set_intel;
-			break;
-#endif
-#ifdef CONFIG_DRIVER_CFI_AMD
-		case CFI_CMDSET_AMD_STANDARD:
-		case CFI_CMDSET_AMD_EXTENDED:
-			info->cfi_cmd_set = &cfi_cmd_set_amd;
-			break;
-#endif
-		default:
-			printf("unsupported vendor\n");
-			return 0;
-		}
-		info->cfi_cmd_set->flash_read_jedec_ids (info);
-		flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI);
-		num_erase_regions = flash_read_uchar (info,
-					FLASH_OFFSET_NUM_ERASE_REGIONS);
-		info->ext_addr = flash_read_ushort (info, 0,
-					FLASH_OFFSET_EXT_QUERY_T_P_ADDR);
-		if (info->ext_addr) {
-			info->cfi_version = (ushort) flash_read_uchar (info,
-						info->ext_addr + 3) << 8;
-			info->cfi_version |= (ushort) flash_read_uchar (info,
-						info->ext_addr + 4);
-		}
-#ifdef DEBUG
-		flash_printqry (info, 0);
-#endif
-		switch (info->vendor) {
-		case CFI_CMDSET_INTEL_STANDARD:
-		case CFI_CMDSET_INTEL_EXTENDED:
-		default:
-			info->cmd_reset = FLASH_CMD_RESET;
-#ifdef CFG_FLASH_PROTECTION
-			/* read legacy lock/unlock bit from intel flash */
-			if (info->ext_addr) {
-				info->legacy_unlock = flash_read_uchar (info,
-						info->ext_addr + 5) & 0x08;
-			}
-#endif
-			break;
-		case CFI_CMDSET_AMD_STANDARD:
-		case CFI_CMDSET_AMD_EXTENDED:
-			info->cmd_reset = AMD_CMD_RESET;
-			/* check if flash geometry needs reversal */
-			if (num_erase_regions <= 1)
-				break;
-			/* reverse geometry if top boot part */
-			if (info->cfi_version < 0x3131) {
-				/* CFI < 1.1, try to guess from device id */
-				if ((info->device_id & 0x80) != 0) {
-					geometry_reversed = 1;
-				}
-				break;
-			}
-			/* CFI >= 1.1, deduct from top/bottom flag */
-			/* note: ext_addr is valid since cfi_version > 0 */
-			if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
-				geometry_reversed = 1;
-			}
-			break;
-		}
-
-		debug ("manufacturer is %d\n", info->vendor);
-		debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
-		debug ("device id is 0x%x\n", info->device_id);
-		debug ("device id2 is 0x%x\n", info->device_id2);
-		debug ("cfi version is 0x%04x\n", info->cfi_version);
-
-		size_ratio = info->portwidth / info->chipwidth;
-		/* if the chip is x8/x16 reduce the ratio by half */
-		if ((info->interface == FLASH_CFI_X8X16)
-		    && (info->chipwidth == FLASH_CFI_BY8)) {
-			size_ratio >>= 1;
-		}
-		debug ("size_ratio %d port %d bits chip %d bits\n",
-		       size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
-		       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
-		debug ("found %d erase regions\n", 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;
-			}
-			if (geometry_reversed)
-				tmp = flash_read_long (info, 0,
-					       FLASH_OFFSET_ERASE_REGIONS +
-					       (num_erase_regions - 1 - i) * 4);
-			else
-				tmp = flash_read_long (info, 0,
-					       FLASH_OFFSET_ERASE_REGIONS +
-					       i * 4);
-			erase_region_size =
-				(tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
-			tmp >>= 16;
-			erase_region_count = (tmp & 0xffff) + 1;
-			debug ("erase_region_count = %d erase_region_size = %d\n",
-				erase_region_count, erase_region_size);
-
-			/* increase the space malloced for the sector start addresses */
-			info->start = realloc(info->start, sizeof(ulong) * (erase_region_count + sect_cnt));
-			info->protect = realloc(info->protect, sizeof(uchar) * (erase_region_count + sect_cnt));
-
-			for (j = 0; j < erase_region_count; j++) {
-				info->start[sect_cnt] = sector;
-				sector += (erase_region_size * size_ratio);
-
-				/*
-				 * Only read protection status from supported devices (intel...)
-				 */
-				switch (info->vendor) {
-				case CFI_CMDSET_INTEL_EXTENDED:
-				case CFI_CMDSET_INTEL_STANDARD:
-					info->protect[sect_cnt] =
-						flash_isset (info, sect_cnt,
-							     FLASH_OFFSET_PROTECT,
-							     FLASH_STATUS_PROTECT);
-					break;
-				default:
-					info->protect[sect_cnt] = 0; /* default: not protected */
-				}
-
-				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)) *
-			(1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT));
-		info->buffer_write_tout = tmp * 1000;
-		tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) *
-		      (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT));
-		info->write_tout = tmp * 1000;
-		info->flash_id = FLASH_MAN_CFI;
-		if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
-			info->portwidth >>= 1;	/* XXX - Need to test on x8/x16 in parallel. */
-		}
-	}
-
-	flash_write_cmd (info, 0, 0, info->cmd_reset);
-	return info->size;
-}
-
-/* loop through the sectors from the highest address
- * when the passed address is greater or equal to the sector address
- * we have a match
- */
-flash_sect_t find_sector (flash_info_t * info, ulong addr)
-{
-	flash_sect_t sector;
-
-	for (sector = info->sector_count - 1; sector >= 0; sector--) {
-		if (addr >= info->start[sector])
-			break;
-	}
-	return sector;
-}
-
-static int cfi_erase(struct cdev *cdev, size_t count, unsigned long offset)
-{
-        flash_info_t *finfo = (flash_info_t *)cdev->priv;
-        unsigned long start, end;
-        int i, ret = 0;
-
-	printf("%s: erase 0x%08x (size %d)\n", __FUNCTION__, offset, count);
-
-        start = find_sector(finfo, cdev->dev->map_base + offset);
-        end   = find_sector(finfo, cdev->dev->map_base + offset + count - 1);
-
-        for (i = start; i <= end; i++) {
-                ret = finfo->cfi_cmd_set->flash_erase_one(finfo, i);
-                if (ret)
-                        goto out;
-		printf(".");
-        }
-out:
-        putchar('\n');
-        return ret;
-}
-
-/*
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong cnt)
-{
-	ulong wp;
-	ulong cp;
-	int aln;
-	cfiword_t cword;
-	int i, rc;
-
-#ifdef CONFIG_CFI_BUFFER_WRITE
-	int buffered_size;
-#endif
-	/* get lower aligned address */
-	/* 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));
-
-		rc = flash_write_cfiword (info, wp, cword);
-		if (rc)
-			return rc;
-		wp = cp;
-	}
-
-	/* handle the aligned part */
-#ifdef CONFIG_CFI_BUFFER_WRITE
-	buffered_size = (info->portwidth / info->chipwidth);
-	buffered_size *= info->buffer_size;
-	while (cnt >= info->portwidth) {
-		/* prohibit buffer write when buffer_size is 1 */
-		if (info->buffer_size == 1) {
-			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;
-			continue;
-		}
-
-		/* write buffer until next buffered_size aligned boundary */
-		i = buffered_size - (wp % buffered_size);
-		if (i > cnt)
-			i = cnt;
-		if ((rc = info->cfi_cmd_set->flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
-			return rc;
-		i -= i & (info->portwidth - 1);
-		wp += i;
-		src += i;
-		cnt -= i;
-	}
-#else
-	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_CFI_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);
-}
-
-static 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_status_check (info, sector, info->erase_blk_tout,
-				      prot ? "protect" : "unprotect")) == 0) {
-
-		info->protect[sector] = prot;
-
-		/*
-		 * On some of Intel's flash chips (marked via legacy_unlock)
-		 * unprotect unprotects all locking.
-		 */
-		if ((prot == 0) && (info->legacy_unlock)) {
-			flash_sect_t i;
-
-			for (i = 0; i < info->sector_count; i++) {
-				if (info->protect[i])
-					flash_real_protect (info, i, 1);
-			}
-		}
-	}
-	return retcode;
-}
-
-static int cfi_protect(struct cdev *cdev, size_t count, unsigned long offset, int prot)
-{
-	flash_info_t *finfo = (flash_info_t *)cdev->priv;
-	unsigned long start, end;
-	int i, ret = 0;
-	const char *action = (prot? "protect" : "unprotect");
-
-	printf("%s: %s 0x%08x (size %d)\n", __FUNCTION__,
-		action, cdev->dev->map_base + offset, count);
-
-	start = find_sector(finfo, cdev->dev->map_base + offset);
-	end   = find_sector(finfo, cdev->dev->map_base + offset + count - 1);
-
-	for (i = start; i <= end; i++) {
-		ret = flash_real_protect (finfo, i, prot);
-		if (ret)
-			goto out;
-	}
-out:
-	putchar('\n');
-	return ret;
-}
-
-static ssize_t cfi_write(struct cdev *cdev, const void *buf, size_t count, unsigned long offset, ulong flags)
-{
-        flash_info_t *finfo = (flash_info_t *)cdev->priv;
-        int ret;
-
-	debug("cfi_write: buf=0x%08x addr=0x%08x count=0x%08x\n",buf, cdev->dev->map_base + offset, count);
-
-        ret = write_buff (finfo, buf, cdev->dev->map_base + offset, count);
-        return ret == 0 ? count : -1;
-}
-
-static void cfi_info (struct device_d* dev)
-{
-        flash_info_t *info = (flash_info_t *)dev->priv;
-	int i;
-
-	if (info->flash_id != FLASH_MAN_CFI) {
-		puts ("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 ("  ");
-	switch (info->vendor) {
-		case CFI_CMDSET_INTEL_STANDARD:
-			printf ("Intel Standard");
-			break;
-		case CFI_CMDSET_INTEL_EXTENDED:
-			printf ("Intel Extended");
-			break;
-		case CFI_CMDSET_AMD_STANDARD:
-			printf ("AMD Standard");
-			break;
-		case CFI_CMDSET_AMD_EXTENDED:
-			printf ("AMD Extended");
-			break;
-		default:
-			printf ("Unknown (%d)", info->vendor);
-			break;
-	}
-	printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
-		info->manufacturer_id, info->device_id);
-	if (info->device_id == 0x7E) {
-		printf("%04X", info->device_id2);
-	}
-	printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
-		info->erase_blk_tout,
-		info->write_tout);
-	if (info->buffer_size > 1) {
-		printf ("  Buffer write timeout: %ld ms, buffer size: %d bytes\n",
-		info->buffer_write_tout,
-		info->buffer_size);
-	}
-
-	puts ("\n  Sector Start Addresses:");
-	for (i = 0; i < info->sector_count; ++i) {
-		if ((i % 5) == 0)
-			printf ("\n");
-#ifdef CFG_FLASH_EMPTY_INFO
-	{
-		int k;
-		int size;
-		int erased;
-		volatile unsigned long *flash;
-
-		/*
-		 * Check if whole sector is erased
-		 */
-		if (i != (info->sector_count - 1))
-			size = info->start[i + 1] - info->start[i];
-		else
-			size = info->start[0] + info->size - info->start[i];
-		erased = 1;
-		flash = (volatile unsigned long *) info->start[i];
-		size = size >> 2;	/* divide by 4 for longword access */
-		for (k = 0; k < size; k++) {
-			if (*flash++ != 0xffffffff) {
-				erased = 0;
-				break;
-			}
-		}
-
-		/* print empty and read-only info */
-		printf ("  %08lX %c %s ",
-			info->start[i],
-			erased ? 'E' : ' ',
-			info->protect[i] ? "RO" : "  ");
-	}
-#else	/* ! CFG_FLASH_EMPTY_INFO */
-		printf ("  %08lX   %s ",
-			info->start[i],
-			info->protect[i] ? "RO" : "  ");
-#endif
-	}
-	putchar('\n');
-	return;
-}
-
-#if 0
-/*
- * flash_read_user_serial - read the OneTimeProgramming cells
- */
-static void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
-			     int len)
-{
-	uchar *src;
-	uchar *dst;
-
-	dst = buffer;
-	src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
-	flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
-	memcpy (dst, src + offset, len);
-	flash_write_cmd (info, 0, 0, info->cmd_reset);
-}
-
-/*
- * flash_read_factory_serial - read the device Id from the protection area
- */
-static void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
-				int len)
-{
-	uchar *src;
-
-	src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
-	flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
-	memcpy (buffer, src + offset, len);
-	flash_write_cmd (info, 0, 0, info->cmd_reset);
-}
-
-#endif 
-
-int flash_status_check (flash_info_t * info, flash_sect_t sector,
-			       uint64_t tout, char *prompt)
-{
-	return info->cfi_cmd_set->flash_status_check(info, sector, tout, prompt);
-}
-
-/*
- *  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.
- */
-int flash_generic_status_check (flash_info_t * info, flash_sect_t sector,
-			       uint64_t tout, char *prompt)
-{
-	uint64_t start;
-
-        tout *= 1000000;
-
-	/* Wait for command completion */
-	start = get_time_ns();
-	while (info->cfi_cmd_set->flash_is_busy (info, sector)) {
-		if (is_timeout(start, tout)) {
-			printf ("Flash %s timeout at address %lx data %lx\n",
-				prompt, info->start[sector],
-				flash_read_long (info, sector, 0));
-			flash_write_cmd (info, sector, 0, info->cmd_reset);
-			return ERR_TIMOUT;
-		}
-		udelay (1);		/* also triggers watchdog */
-	}
-	return ERR_OK;
-}
-
-/*
- * make a proper sized command based on the port and chip widths
- */
-void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
-{
-	int i;
-	uchar *cp = (uchar *) cmdbuf;
-
-#if defined(__LITTLE_ENDIAN)
-	for (i = info->portwidth; i > 0; i--)
-#else
-	for (i = 1; i <= info->portwidth; i++)
-#endif
-		*cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd;
-}
-		
-/*
- * Write a proper sized command to the correct address
- */
-void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
-{
-
-	uchar *addr;
-	cfiword_t cword;
-
-	addr = flash_make_addr (info, sect, offset);
-	flash_make_cmd (info, cmd, &cword);
-	flash_write_word(info, cword, addr);
-}
-
-int flash_isequal (flash_info_t * info, flash_sect_t 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);
-
-	debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
-	if (bankwidth_is_1(info)) {
-		debug ("is= %x %x\n", cptr.cp[0], cword.c);
-		retval = (cptr.cp[0] == cword.c);
-	} else if (bankwidth_is_2(info)) {
-		debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
-		retval = (cptr.wp[0] == cword.w);
-	} else if (bankwidth_is_4(info)) {
-		debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
-		retval = (cptr.lp[0] == cword.l);
-	} else if (bankwidth_is_8(info)) {
-#ifdef DEBUG
-		{
-			char str1[20];
-			char str2[20];
-
-			print_longlong (str1, cptr.llp[0]);
-			print_longlong (str2, cword.ll);
-			debug ("is= %s %s\n", str1, str2);
-		}
-#endif
-		retval = (cptr.llp[0] == cword.ll);
-	} else
-		retval = 0;
-
-	return retval;
-}
-
-int flash_isset (flash_info_t * info, flash_sect_t 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);
-	if (bankwidth_is_1(info)) {
-		retval = ((cptr.cp[0] & cword.c) == cword.c);
-	} else if (bankwidth_is_2(info)) {
-		retval = ((cptr.wp[0] & cword.w) == cword.w);
-	} else if (bankwidth_is_4(info)) {
-		retval = ((cptr.lp[0] & cword.l) == cword.l);
-	} else if (bankwidth_is_8(info)) {
-		retval = ((cptr.llp[0] & cword.ll) == cword.ll);
-	} else
-		retval = 0;
-
-	return retval;
-}
-
-struct file_operations cfi_ops = {
-	.read    = mem_read,
-	.write   = cfi_write,
-	.lseek  = dev_lseek_default,
-	.erase   = cfi_erase,
-	.protect = cfi_protect,
-	.memmap  = generic_memmap_ro,
-};
-
-static int cfi_probe (struct device_d *dev)
-{
-	unsigned long size = 0;
-	flash_info_t *info = xzalloc(sizeof(flash_info_t));
-
-	dev->priv = (void *)info;
-
-	printf("cfi_probe: %s base: 0x%08x size: 0x%08x\n", dev->name, dev->map_base, dev->size);
-
-	/* Init: no FLASHes known */
-	info->flash_id = FLASH_UNKNOWN;
-	size += info->size = flash_get_size(info, dev->map_base);
-
-	if (dev->size == 0) {
-		printf("cfi_probe: size : 0x%08x\n", info->size);
-		dev->size = info->size;
-	}
-
-	if (info->flash_id == FLASH_UNKNOWN) {
-		printf ("## Unknown FLASH on Bank at 0x%08x - Size = 0x%08lx = %ld MB\n",
-			dev->map_base, info->size, info->size << 20);
-		return -ENODEV;
-	}
-
-	info->cdev.name = asprintf("nor%d", dev->id);
-	info->cdev.size = info->size;
-	info->cdev.dev = dev;
-	info->cdev.ops = &cfi_ops;
-	info->cdev.priv = info;
-	devfs_create(&info->cdev);
-
-	return 0;
-}
-
-static struct driver_d cfi_driver = {
-        .name    = "cfi_flash",
-        .probe   = cfi_probe,
-        .info    = cfi_info,
-};
-
-static int cfi_init(void)
-{
-        return register_driver(&cfi_driver);
-}
-
-device_initcall(cfi_init);
-