Dear Wolfagng, Wolfgang Denk wrote:
Dear Rahanesh,
In message 4ACAEEA9.1020602@tataelxsi.co.in you wrote:
But when i type the command fw_printenv i get the following message first
"*Read error on /dev/mtd1: Success*" then u-boot environment variables are printed.
I gave up trying to reply to your questions. You supply _zero_ information. We don't know which board this is, which exact version of U-Boot you are running on it, which modifications you made to the code you are running, how you configured and built U-Boot for this board, what the MTD configuration in your Linux kernel is, nor how you set up the fw_env configuration file, etc. etc. etc.
I am trying to give as much information as possible.
This is mips processor based A100 board. Uboot version is uboot 1.2. There are no modifications to u-boot code as such. These are the MTD configurations in Linux kernel. MTD0 - Firmware + U-Boot + Environment variables of u-boot MTD1- JFFS (Linux + Apps) MTD1 - CONFIG
fw_env.config file is shown below
# MTD device name Device offset Env. size Flash sector size Number of sectors /dev/mtd0 0x3F000 0x1000 0x1000
When i use this configuration file i am able to see all environment variables from Linux. even setting Environment variables also was success.
But when i reboot the system to see the modified changes i get a boot failed message.
Thanks Rahanesh