Hi Stephan , Thanks for your help. The same problem remains with the upgraded version also.
Is it something to do with the TEXT_BASE. The probelm is the data for environment is written to flash properly. But when it checks for crc in env_init() the crc32 function fails. the env_ptr->crc is correct.
The environment sector when allocated in malloc area in main memory seems to get corrupted because the crc field does not seem to be correct.
the Ram is 32 MB TEXT_BASE 21F00000 CFG_GBL_DATA_SIZE 128 CFG_ENV_ADDR (CFG_FLASH_BASE + 0x20000) CFG_ENV_SIZE 0x2000 CFG_ENV_SECT_SIZE 0x20000 CONFIG_STACKSIZE (32 * 1024) CFG_MALLOC_LEN (CFG_ENV_SIZE + 128*1024)
thanks & regards santi gopal
Santi Gopal Mondal Senior Engineer, R&D Services Mindtree Consulting Mobile: 09886325167
-----Original Message----- From: Stefan Roese [mailto:sr@denx.de] Sent: Tue 11/27/2007 11:41 AM To: u-boot-users@lists.sourceforge.net Cc: Santigopal Mondal Subject: Re: [U-Boot-Users] Problem using cfi_flash driver for s29GL512N flashes
On Tuesday 27 November 2007, santigopal_mondal@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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