HI3516DV300笔记（四）修改uboot环境变量

开发板烧写uboot后，会修改环境变量到默认配置，可以修改配置文件，修改默认的环境变量。

修改u-boot-2016.11/include/configs/hi3516dv300.h

/* Assume we boot with root on the seventh partition of eMMC */
#define CONFIG_BOOTARGS "mem=512M console=ttyAMA0,115200 root=/dev/mtdblock2 rw rootfstype=yaffs2 mtdparts=hinand:1M(boot),4M(kernel),-(rootfs)"
#define CONFIG_BOOTCOMMAND "nand read 0x82000000 0x100000 0x400000;bootm 0x82000000"
#define CONFIG_IPADDR 192.168.1.100
#define CONFIG_SERVERIP 192.168.1.120
#define CONFIG_GATEWAYIP 192.168.1.1
#define CONFIG_NETMASK 255.255.255.0