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AM3352在u-boot下加载kernel后,控制台打印starting kernel...后无打印

Other Parts Discussed in Thread: TPS650250

1. 内核linux3.2.0

2.u-boot2013.1.1

3.CPU:AM3352BZCZ60

4.ddr:K4B1G1646I(ddr3,1gb)

5:flash:MT29F1G08ABAEAWP

情景描述:

 小系统配置从sd卡优先加载启动,sd卡存放MLO\uboot.img\uImage\ubi.img,板子上电后通过加载运行sd卡中的小系统,然后烧写到NAND FLASH中,下电再上电后发现UBOOT加载内核成功,但内核无法解压自启动

同时在内核没有启动的时候,测DDR信号,发现DDR没有读写信号,进一步确定DDR未启动

在UBOOT打印starting kernel之后,打印出内核的入口地址EP与uImage的入口地址一致,见图

针对这种情况现在如何定位问题