[U-Boot] U-boot common/environment.c

Hi im using u-boot-1.1.5_atmel_1.2 and want to add a new environment variable for uboot version...my doubt --is it enough that i add this in the env_t environment __PPCENV__ . 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...? thanks & regards, Deepak Gopalakrishnan