[PATCH] CFI: define CFG_WRITE_SWAPPED_DATA for the CFI-Flash driver
if you must swap the bytes between reading/writing.
(Needed for the SC3 board)
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index 665d8e7..696f9a4 100644
--- a/drivers/cfi_flash.c
+++ b/drivers/cfi_flash.c
@@ -40,10 +40,6 @@
#include <environment.h>
#ifdef CFG_FLASH_CFI_DRIVER
-#if defined(CONFIG_SOLIDCARD3)
-#define __LITTLE_ENDIAN
-#endif
-
/*
* 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.
@@ -58,6 +54,8 @@
* 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).
*/
#ifndef CFG_FLASH_BANKS_LIST
@@ -260,7 +258,7 @@
uchar *cp;
cp = flash_make_addr (info, 0, offset);
-#if defined(__LITTLE_ENDIAN)
+#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
return (cp[0]);
#else
return (cp[info->portwidth - 1]);
@@ -287,7 +285,7 @@
debug ("addr[%x] = 0x%x\n", x, addr[x]);
}
#endif
-#if defined(__LITTLE_ENDIAN)
+#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
retval = ((addr[(info->portwidth)] << 8) | addr[0]);
#else
retval = ((addr[(2 * info->portwidth) - 1] << 8) |
@@ -319,7 +317,7 @@
debug ("addr[%x] = 0x%x\n", x, addr[x]);
}
#endif
-#if defined(__LITTLE_ENDIAN)
+#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
@@ -860,7 +858,7 @@
*/
static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
{
-#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SOLIDCARD3)
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
unsigned short w;
unsigned int l;
unsigned long long ll;
@@ -871,7 +869,7 @@
cword->c = c;
break;
case FLASH_CFI_16BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SOLIDCARD3)
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
w = c;
w <<= 8;
cword->w = (cword->w >> 8) | w;
@@ -880,7 +878,7 @@
#endif
break;
case FLASH_CFI_32BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SOLIDCARD3)
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
l = c;
l <<= 24;
cword->l = (cword->l >> 8) | l;
@@ -889,7 +887,7 @@
#endif
break;
case FLASH_CFI_64BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SOLIDCARD3)
+#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
ll = c;
ll <<= 56;
cword->ll = (cword->ll >> 8) | ll;
@@ -909,7 +907,7 @@
int i;
uchar *cp = (uchar *) cmdbuf;
-#if defined(__LITTLE_ENDIAN)
+#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
for (i = info->portwidth; i > 0; i--)
#else
for (i = 1; i <= info->portwidth; i++)
@@ -1535,8 +1533,4 @@
}
#endif /* CFG_FLASH_USE_BUFFER_WRITE */
-#if defined(CONFIG_SOLIDCARD3)
-#undef __LITTLE_ENDIAN
-#endif
-
#endif /* CFG_FLASH_CFI */