1、重置环境变量
U-Boot > env default -f
## Resetting to default environment
2、设置DDR内存分配
U-Boot > setenv bootcmd 'setenv mem_args "mem=32M@0xc0000000 mem=192M@0xc4000000";run commonargs;run mmcboot;run nandboot;run spiboot;'
3、保存环境变量
U-Boot > saveenv
Saving Environment to NAND...
Erasing Nand...
Erasing at 0x0 -- 100% complete.
Writing to Nand... done
U-Boot >
4、然后断电重启。
5、重启后使用如下命令查看:
root@tl:~# cat /proc/cmdline
console=ttyS2,115200n8 mem=32M@0xc0000000 mem=192@0xc4000000 eth=06:00:90:09:8e:c0 da850-panel=TL070A da850-emac=mii root=ubi0_0 ubi.mtd=4,2048 rootfstype=ubifs
root@tl:~#