From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Roese <sr@denx.de>
Date: Tue, 27 Nov 2007 07:11:28 +0100
Subject: [U-Boot-Users] Problem using cfi_flash driver for s29GL512N
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On Tuesday 27 November 2007, santigopal_mondal at mindtree.com wrote:
>  Greetings everybody..I am using u-boot1.1.5 for at91rm9200ek type
> board(arm).

U-Boot 1.1.5 is *old*. I suggest upgrading to the current version. Lot's of 
things got fixed here.

> The flash memory used here is s29GL512N(128k sectors).I am able 
> to configure the board/config flle properly it seems. The driver also
> erases/writes properly it seems. The problem is when I am trying to save
> environment variables it is getting set but in some cases after a reset it
> is showing Bad CRC and getting to the default environment. The other thing
> is I am not able to boot the kernel image from the flash due to some bad
> checksum error. Everywhere the problem is related to crc. I am a bit
> confused why the CRC check fails everytime? Is it not writing properly and
> if it is not writing properly then how it is able to get the u-boot
> prompt..
>
> The required configurations defined
>
> #define CFG_ENV_ADDR (CFG_FLASH_BASE + 0x20000)
> #define CFG_ENV_SIZE 0x2000
> #define CFG_ENV_SECT_SIZE 0x20000
> #define CFG_MALLOC_LEN (CFG_ENV_SIZE + 128*1024)
> #define CONFIG_STACKSIZE (32 * 1024)
>
> The TEXT_BASE in config.mk :
>
>  TEXT_BASE 0x21F00000
>
>  Please help as soon as possible...

Debugging this problem in the old U-Boot version doesn't seem to make sense to 
me. Please try to upgrade.

Best regards,
Stefan

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