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