diff options
Diffstat (limited to 'drivers/cfi_flash.c')
| -rw-r--r-- | drivers/cfi_flash.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index fd0a186..33a5822 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -2,9 +2,12 @@ * (C) Copyright 2002-2004 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com * - * Copyright (C) 2003 Arabella Software Ltd. + * Copyright (C) 2003, 2006 Arabella Software Ltd. * Yuli Barcohen <yuli@arabellasw.com> * Modified to work with AMD flashes + * Added support for byte lanes swap + * Added support for 32-bit chips consisting of two 16-bit devices + * (for example, S70GL256M00) * * Copyright (C) 2004 * Ed Okerson @@ -45,10 +48,13 @@ /* #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. @@ -71,6 +77,10 @@ * Verify erase and program timeouts. */ +#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 @@ -268,7 +278,7 @@ inline uchar flash_read_uchar (flash_info_t * info, uint offset) uchar *cp; cp = flash_make_addr (info, 0, offset); -#if defined(__LITTLE_ENDIAN) +#if defined(CFG_FLASH_CFI_SWAP) return (cp[0]); #else return (cp[info->portwidth - 1]); @@ -295,7 +305,7 @@ 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(__LITTLE_ENDIAN) +#if defined(CFG_FLASH_CFI_SWAP) retval = ((addr[(info->portwidth)] << 8) | addr[0]); #else retval = ((addr[(2 * info->portwidth) - 1] << 8) | @@ -327,7 +337,7 @@ 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(__LITTLE_ENDIAN) +#if defined(CFG_FLASH_CFI_SWAP) retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) | (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8); #else @@ -892,12 +902,22 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) int i; uchar *cp = (uchar *) cmdbuf; -#if defined(__LITTLE_ENDIAN) +#if defined(CFG_FLASH_CFI_SWAP) 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 */ } /* |