Hi Jian,

1. x-loader and u-boot is compiling fine with devkit release 2.0

2. It seems you have forgot to put correct configuration paramenter while compiling u-boot.

for you log you are trying to do...

shijian@shijian-R458:~/rowboat-android/u-boot-omap3$ make CROSS_COMPILE=arm-eabi- ARCH=arm <default_config_sd>
which is incorrect, <default_config_sd> should be replaced by configuration of  the platform for which you want to build u-boot..

     ti8148_evm_min_sd    : For TI814X EVM
     ti8168_evm_min_sd    : For TI816X EVM

ex.

to comiple for ti8148 it should be...

shijian@shijian-R458:~/rowboat-android/u-boot-omap3$ make CROSS_COMPILE=arm-eabi- ARCH=arm ti8148_evm_min_sd

or to compile for ti8168

shijian@shijian-R458:~/rowboat-android/u-boot-omap3$ make CROSS_COMPILE=arm-eabi- ARCH=arm ti8168_evm_min_sd

Kindly refer

http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3-DevKit-2.0_DeveloperGuide#x-loader_and_u-boot

for more details.

-

satish