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dm8147 SD卡启动停止在第一阶段uboot



串口打印信息如下:

U-Boot 2010.06 (Sep 10 2012 - 09:14:10)

TI8148-GP rev 2.1

ARM clk: 600MHz

DDR clk: 266MHz

DRAM:  2 GiB

MMC:   OMAP SD/MMC: 0

Using default environment

The 2nd stage U-Boot will now be auto-loaded

Please do not interrupt the countdown till TI8148_EVM prompt if 2nd stage is already flashed

Hit any key to stop autoboot:  0

reading u-boot.bin

185548 bytes read

## Starting application at 0x80800000 ...

2级Uboot被读入DDR,但跳转后无打印消息,本人所使用的硬件平台是DM8147+micro DDR2,无NAND FLASH,启动模式配置为SD启动模式,MLO及u-boot.bin均按SD的配置方式编译产生。

麻烦工程师帮忙分析下,通过哪几个方面进行问题查找,谢谢