ppc4xx: Remove unused APC405 strataflash driver
authorMatthias Fuchs <matthias.fuchs@esd-electronics.com>
Mon, 21 Apr 2008 12:42:21 +0000 (14:42 +0200)
committerStefan Roese <sr@denx.de>
Tue, 22 Apr 2008 11:48:32 +0000 (13:48 +0200)
The APC405 board support has been migrated to use the common
CFI flash driver.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
board/esd/apc405/strataflash.c [deleted file]

diff --git a/board/esd/apc405/strataflash.c b/board/esd/apc405/strataflash.c
deleted file mode 100644 (file)
index ad7a71d..0000000
+++ /dev/null
@@ -1,789 +0,0 @@
-/*
- * (C) Copyright 2002
- * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
- *
- * 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 ppcboot.
- * 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[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, 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 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, 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 = CFG_FLASH_BASE;
-       size = 0;
-
-       /* 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(address, i);
-               address += CFG_FLASH_INCREMENT;
-               if (flash_info[0].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 (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-       for(i=0; flash_info[0].start[i] < CFG_MONITOR_BASE+CFG_MONITOR_LEN-1; i++)
-               (void)flash_real_protect(&flash_info[0], i, 1);
-#endif
-#else
-       /* monitor protection ON by default */
-       flash_protect (FLAG_PROTECT_SET,
-                      - CFG_MONITOR_LEN,
-                      - 1, &flash_info[1]);
-#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) {
-#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;
-                     }
-                 }
-
-               if ((i % 5) == 0)
-                       printf ("\n   ");
-               /* print empty and read-only info */
-               printf (" %08lX%s%s",
-                       info->start[i],
-                       erased ? " E" : "  ",
-                       info->protect[i] ? "RO " : "   ");
-#else
-               if ((i % 5) == 0)
-                       printf ("\n   ");
-               printf (" %08lX%s",
-                       info->start[i],
-                       info->protect[i] ? " (RO)" : "     ");
-#endif
-       }
-       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);
-}
-
-/*-----------------------------------------------------------------------
- */
-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;
-       uchar num_erase_regions;
-       int  erase_region_size;
-       int  erase_region_count;
-
-       info->start[0] = base;
-
-       if(flash_detect_cfi(info)){
-#ifdef DEBUG_FLASH
-               printf("portwidth=%d chipwidth=%d\n", info->portwidth, info->chipwidth); /* test-only */
-#endif
-               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();
-
-       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 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 */