Hi Deepak,
im using u-boot-1.1.5_atmel_1.2 and want to add a new environment variable
I doubt that you will get much support with this U-Boot version here on the list. Use latest code if you want to get help.
for uboot version...my doubt --is it enough that i add this in the env_t environment __PPCENV__ .
This all sounds very fishy - you're working on an ARM platform and you change something with a tag __PPCENV__? Well, let's see, oh it looks like you're looking at what is common/env_embedded.c in latest code.
Note that this is only for board configuration which embed the environment *inside* the text segment, because of unusal requirements of the flash layout. This is definitely not the norm - does your configuration use CONFIG_ENV_IS_EMBEDDED?
Also for each entry in this structure there is a macro defined, so if i add version as a new env variable..so this is wat i have made change in common/environment.c line 179 where env_t environment __PPCENV__ is defined
#ifdef U_BOOT_VERSION "u-boot_version=" U_BOOT_VERSION #endif
is this enough...?
The environment is a dynamic data section which usually lives outside of U-Boot code in its own data location. Of course we can change the environment in a running system, so the compiled in default environment - or even the embedded environment is only relevant if the "normal" environment is not accessible, e.g. when flashing a module for the first time or after a complete erase operation.
Otherwise the "normal" envirnment will be used and even if you change the compiled in set, you will not see much difference if you don't erase the environment on an update.
Do you see the conceptual differences here?
Cheers Detlev