uboot 中对网路默认支持的是 cs8900 ，我们板子上的芯片用的是 DM9000，驱动中有 DM9000 部分，因此，我们改动的较小：
1. 更改配置的宏：include/configs/lip2440.h
@@ -36,10 +36,13 @@
/*
* Hardware drivers
*/
-#define CONFIG_CS8900 /* we have a CS8900 on-board */
-#define CONFIG_CS8900_BASE 0x19000300
-#define CONFIG_CS8900_BUS16 /* the Linux driver does accesses as shorts */
-
+#define CONFIG_DRIVER_DM9000
+#define CONFIG_DM9000_NO_SROM /* not use the dm9000 eeprom */
+#define CONFIG_NET_RANDOM_ETHADDR /* set the ethaddr */
+#define CONFIG_LIB_RAND /* random_ethadd need rand function */
+#define CONFIG_DM9000_BASE 0x20000300
+#define DM9000_IO CONFIG_DM9000_BASE
+#define DM9000_DATA (CONFIG_DM9000_BASE + 4)
/*
* select serial console configuration
*/
@@ -93,8 +96,8 @@
#define CONFIG_ZERO_BOOTDELAY_CHECK
#define CONFIG_NETMASK 255.255.255.0
-#define CONFIG_IPADDR 10.0.0.110
-#define CONFIG_SERVERIP 10.0.0.1
+#define CONFIG_IPADDR 10.100.151.110
+#define CONFIG_SERVERIP 10.100.151.122
#if defined(CONFIG_CMD_KGDB)
#define CONFIG_KGDB_BAUDRATE 115200 /* speed to run kgdb serial port */
2. 更改初始化函数：board/samsung/lip2440/lip2440.c
@@ -122,6 +122,9 @@ int board_eth_init(bd_t *bis)
#ifdef CONFIG_CS8900
rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
#endif
+#ifdef CONFIG_DRIVER_DM9000
+ rc = dm9000_initialize(bis);
+#endif
return rc;
}
#endif
去掉“could not establish link”字样，并加快运行速度，可以删除 drivers/net/dm9000x.c文件中的dm9000_init函数内的下面语句：
i= 0;
while(!(dm9000_phy_read(1) & 0x20)) { /*autonegation complete bit */
udelay(1000);
i++;
if(i == 10000) {
printf("couldnot establish link\n");
return0;
}
}
/*see what we've got */
lnk= dm9000_phy_read(17) >> 12;
printf("operatingat ");
switch(lnk) {
case1:
printf("10M half duplex ");
break;
case2:
printf("10M full duplex ");
break;
case4:
printf("100M half duplex ");
break;
case8:
printf("100M full duplex ");
break;
default:
printf("unknown:%d ", lnk);
break;
}
最后的运行结果是：
U-Boot 2016.03-00004-gf2f5c9e-dirty (May 06 2016 - 17:31:38 +0800)
CPUID: 32440001
FCLK: 400 MHz
HCLK: 100 MHz
PCLK: 50 MHz
DRAM: 64 MiB
WARNING: Caches not enabled
Flash: 2 MiB
NAND: 256 MiB
In: serial
Out: serial
Err: serial
Net: dm9000
Warning: dm9000 (eth0) using random MAC address - e6:07:43:45:ff:94
LIP2440 #
