I get the following error during startup from u-boot
U-Boot SPL 2012.07-00002-g5da8247 (Sep 30 2012 - 17:22:13)
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img


U-Boot 2012.07-00002-g5da8247 (Sep 30 2012 - 17:22:13)

OMAP36XX/37XX-GP ES1.2, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
Gumstix Overo board + LPDDR/NAND
I2C:   ready
DRAM:  256 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment
U-Boot SPL 2012.07-00002-g5da8247 (Sep 30 2012 - 17:22:13)
OMAP SD/MMC: 0

How do i get rid of the readenv() failed warning?