diff options
Diffstat (limited to 'drivers/cfi_flash.c')
| -rw-r--r-- | drivers/cfi_flash.c | 41 |
1 files changed, 13 insertions, 28 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index a834cb4..696f9a4 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -2,7 +2,7 @@ * (C) Copyright 2002-2004 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com * - * Copyright (C) 2003, 2006 Arabella Software Ltd. + * Copyright (C) 2003 Arabella Software Ltd. * Yuli Barcohen <yuli@arabellasw.com> * * Copyright (C) 2004 @@ -35,13 +35,10 @@ /* #define DEBUG */ #include <common.h> - -#ifdef CFG_FLASH_CFI_DRIVER - -#include <watchdog.h> #include <asm/processor.h> #include <asm/byteorder.h> #include <environment.h> +#ifdef CFG_FLASH_CFI_DRIVER /* * This file implements a Common Flash Interface (CFI) driver for U-Boot. @@ -57,12 +54,10 @@ * AMD/Spansion Application Note: Migration from Single-byte to Three-byte * Device IDs, Publication Number 25538 Revision A, November 8, 2001 * + * define CFG_WRITE_SWAPPED_DATA, if you have to swap the Bytes between + * reading and writing ... (yes there is such a Hardware). */ -#if defined(__LITTLE_ENDIAN) && !defined(CFG_FLASH_CFI_SWAP) -#define CFG_FLASH_CFI_SWAP -#endif - #ifndef CFG_FLASH_BANKS_LIST #define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE } #endif @@ -263,7 +258,7 @@ inline uchar flash_read_uchar (flash_info_t * info, uint offset) uchar *cp; cp = flash_make_addr (info, 0, offset); -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) return (cp[0]); #else return (cp[info->portwidth - 1]); @@ -290,7 +285,7 @@ ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) debug ("addr[%x] = 0x%x\n", x, addr[x]); } #endif -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) retval = ((addr[(info->portwidth)] << 8) | addr[0]); #else retval = ((addr[(2 * info->portwidth) - 1] << 8) | @@ -322,7 +317,7 @@ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) debug ("addr[%x] = 0x%x\n", x, addr[x]); } #endif -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) | (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8); #else @@ -863,7 +858,7 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, */ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) { -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) unsigned short w; unsigned int l; unsigned long long ll; @@ -874,7 +869,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) cword->c = c; break; case FLASH_CFI_16BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) w = c; w <<= 8; cword->w = (cword->w >> 8) | w; @@ -883,7 +878,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) #endif break; case FLASH_CFI_32BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) l = c; l <<= 24; cword->l = (cword->l >> 8) | l; @@ -892,7 +887,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) #endif break; case FLASH_CFI_64BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) ll = c; ll <<= 56; cword->ll = (cword->ll >> 8) | ll; @@ -912,22 +907,12 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) int i; uchar *cp = (uchar *) cmdbuf; -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) for (i = info->portwidth; i > 0; i--) #else for (i = 1; i <= info->portwidth; i++) #endif *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd; -#ifdef CFG_FLASH_CFI_2x16 - if ((info->portwidth == FLASH_CFI_32BIT) && (info->chipwidth == FLASH_CFI_BY16)) - { - uchar tmp; - cp = (uchar *) cmdbuf; - tmp = cp[1]; - cp[1] = cp[2]; - cp[2] = tmp; - } -#endif /* CFG_FLASH_CFI_2x16 */ } /* @@ -1376,7 +1361,6 @@ static int flash_write_cfiword (flash_info_t * info, ulong dest, 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: @@ -1548,4 +1532,5 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, } } #endif /* CFG_FLASH_USE_BUFFER_WRITE */ + #endif /* CFG_FLASH_CFI */ |