配置U-Boot支持dm9000网卡
原理图
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLiAzNvwVZ2x2bzNXak9CX90TQNNkRrFlQKBTSvwFbslmZvwFMwQzLcVmepNHdu9mZvwFVywUNMZTY18CX052bm9CX9gTMihGaykFbWhUZuVzVZ9GczwEMW1mY1RzRapnTtxkb5ckYplTeMZTTINGMShUYvwFd4VGdvwlMvw1ayFWbyVGdhd3P3gTMygjMwEzMwYDM4EDMy8CX0Vmbu4GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.jpg)
# vi drivers/net/Makefile
obj-$(CONFIG_DRIVER_NET_CS8900) += cs890.o
obj-$(CONFIG_DRIVER_NET_SMC911X) += smc911x.o
obj-$(CONFIG_DRIVER_NET_DM9000) += dm900.o
obj-$(CONFIG_DRIVER_NET_NETX) += netx_eth.o
obj-$(CONFIG_DRIVER_NET_AT91_ETHER) += at91_ether.o
obj-$(CONFIG_DRIVER_NET_MPC5200) += fec_mpc520.o
obj-$(CONFIG_DRIVER_NET_IMX27) += fec_imx27.o
obj-$(CONFIG_DRIVER_NET_TAP) += tap.o
obj-$(CONFIG_MIIPHY) += miiphy.o
内存控制器
片选信号基地址
CMD地址
CMD接在cpu的ADDR2,也就是bit2有效
位宽设置
配置内存控制器