自己做的8127的开发板,参考TI8148evm的原理图,从sd卡启动uboot的时候,总是卡在第一阶段uboot_min,多次复位偶尔能够成功启动进入第二阶段;跟sd相关的硬件配置都检查过了,不知道造成这种现象的原因是什么,有碰到过类似的问题的指点一下。下面是启动是串口输出:
U-Boot 2010.06 (Apr 07 2016 - 10:09:41)
TI8148-GP rev 2.1
ARM clk: 600MHz
DDR clk: 400MHz
DRAM: 512 MiB
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 ald
Hit any key to stop autoboot: 0
** Can't read from device 0 **
** Unable to use mmc 0:1 for fatload **
## Starting application at 0x80800000 ...