[U-Boot] post tests in arm uboot

[shobin b]

Hi,  I enabled post in u boot(I am using toradex colibrit20 board).In post i enabled memory and i2c tests in u boot. Its working fine.After that i did watchdog test and then i flashed my u boot to board.It shows following it is hanged up to post watchdog,                                                                                                           U-Boot 2011.06-00001-g2715f5b-dirty (Apr 02 2014 - 13:31:05)                                                                                                                                                              TEGRA2                                                                                                                                                                                                                     In memory_post_test1                                                                                                                                                                                                      In memory_post_test1                                                                                                                                                                                                      In memory_post_test1                                                                                                                                                                                                      In memory_post_test1                                                                                        MEMORY POST TEST 1 OK..........                                                                                                                                                                                            In memory_post_test2                                                                                        MEMORY POST TEST 2 OK..........                                                                                                                                                                                            In memory_post_test3                                                                                        MEMORY POST TEST 3 OK..........
 In memory_post_test4MEMORY POST TEST 4 OK..........DRAM:  256 MiBPOST memory PASSEDNAND:  512 MiBMMC:   Tegra2 SD/MMC: 0*** Warning - bad CRC, using default environment
Board: Toradex Colibri T20Missing Colibri config blockNet:   Net Initialization SkippedNo ethernet found.POST watchdog 
Please give me a solution.