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cfi_flash: fix flash on BE machines with CFG_WRITE_SWAPPED_DATA 

This got broken by commits 93c56f212c
 [cfi_flash: support of long cmd in U-boot.]

That command needs to be in little endian format on BE machines
with CFG_WRITE_SWAPPED_DATA. Without this patch, the command 0xf0
gets saved on stack as 0x00 00 00 f0 and 0x00 gets written into
the cmdbuf in case portwidth = chipwidth = 8bit.

Cc: Alexey Korolev <akorolev@infradead.org>
Cc: Vasiliy Leonenko <vasiliy.leonenko@mail.ru>
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
This commit is contained in:
Sebastian Siewior 2008-07-16 20:04:49 +02:00 committed by Stefan Roese
parent 699f051255
commit 340ccb260f
1 changed files with 4 additions and 1 deletions
drivers/mtd
cfi_flash.c

5
drivers/mtd/cfi_flash.c
View File

@ -306,6 +306,9 @@ static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
int i;
int cword_offset;
int cp_offset;
#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
u32 cmd_le = cpu_to_le32(cmd);
#endif
uchar val;
uchar *cp = (uchar *) cmdbuf;
@ -313,7 +316,7 @@ static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
cword_offset = (info->portwidth-i)%info->chipwidth;
#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
cp_offset = info->portwidth - i;
val = *((uchar*)&cmd + cword_offset);
val = *((uchar*)&cmd_le + cword_offset);
#else
cp_offset = i - 1;
val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);