[U-Boot-Users] Problem in CFI driver (Spansion flash 8-bit mode)

[laba <selathu@gmail.com>]

laba wrote:
> 
> Hai,
>     I am using MPC8641D processor. 16MB flash with 8bit mode(part
> number:S29GL128N90FFIRR). From the BDI prompt i am able to prog the uboot.
> The output is
> 
> 8641>md 0xfff00000
> 0_fff00000 : 27051956 552d426f 6f742031 2e322e30  '..VU-Boot 1.2.0
> 0_fff00010 : 20284a75 6e203239 20323030 37202d20   (Jun 29 2007 -
> 0_fff00020 : 31333a32 313a3432 29000000 00000000  13:21:42).......
> 
>    Then i give the go command in the BDI prompt means the uboot booted i
> got the prompt. From the u-boot prompt i try the erase the flash and
> program i get the following result.
> 
> MPC8641D-AMC> md 0xfff00000
> fff00000: 05275619 2d556f42 746f3120 322e302e    .'V.-UoBto1 2.0.
> fff00010: 2820754a 206e3932 32203030 2037202d    ( uJ n922 00 7 -
> fff00020: 3431333a 3a383630 00290000 00000000    413::860.)......
> 
>    the result looks like swapped. The u-boot version is 1.1.6. processor
> d7-d0 is connected to flash d0-d7. Byte pin in the flash is connected to
> the ground. it indicates 0 -> 8bit mode.
> 
>    How can i overcome this problem? Does the currect cfi driver in uboot
> support 8bit mode or not? if it is means why i got this problem? 
> 
> Thanks,
>          Laba
> 
Hai,
    I forgot to mention my flash configuration. here i mentioned that

#define CFG_FLASH_CFI
#define CFG_FLASH_CFI_DRIVER
#define CFG_FLASH_EMPTY_INFO
#define CFG_FLASH_USE_BUFFER_WRITE 1

#define CFG_FLASH_BASE          0xff000000     /* start of FLASH 16MB */

#define CFG_BR0_PRELIM          0xff000801      /* port size 8-bit  */
#define CFG_OR0_PRELIM          0xff006ff7      /* 16MB Boot Flash area*/

#define CFG_MAX_FLASH_BANKS     1               /* number of banks */
#define CFG_MAX_FLASH_SECT      128             /* sectors per device */

#undef  CFG_FLASH_CHECKSUM
#define CFG_FLASH_ERASE_TOUT    60000   /* Flash Erase Timeout (ms) */
#define CFG_FLASH_WRITE_TOUT    500     /* Flash Write Timeout (ms) */

   In cfi_flash.c the port width configuration is

#ifndef CFG_FLASH_CFI_WIDTH
#define CFG_FLASH_CFI_WIDTH     FLASH_CFI_8BIT
#endif

Thanks
laba


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