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sd卡启动正常,在sd卡启动下(10111),用uboot烧写MLO,U-boot,uImage到nand中烧写成功,配置成nand启动(10010),串口没有任何输出,在UART0中有ccc打印。我尝试换成(10011),插上sd卡能启动,uImage为nand中的uImage。在(10011)下拔掉sd卡,也不能正常启动。想请问是什么原因导致无法nand启动。
U-Boot #mmc rescan
U-Boot #nand erase 0x0 0x280000
U-Boot #fatload mmc 0 0x82000000 MLO
U-Boot #nand write 0x82000000 0x0 0x20000
U-Boot #fatload mmc 0 0x82000000 u-boot.img
U-Boot #nand write 0x82000000 0x80000 0x1E0000
U-Boot #nand erase 0x280000 0x500000
U-Boot #fatload mmc 0 0x82000000 uImage
U-Boot #nand write 0x82000000 0x280000 0x500000
ecc设置对了吗?建议你参考这个,核对一下,是不是有什么疏漏的地方:
http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User%27s_Guide#NAND_2