Linux2.6.39 for Utu2440(2)

TurnToJPG -->

Serial Port Support

Enable the Device Driver—-> Character deivces —-> Serial drivers —-> Samsung related settings, My setting is listed as following:

Then you will see serial output during kernel boot.

DM9000 Support

Add following code into the linux/arch/arm/mach-s3c2440/mach-smdk2440.c:

#include <linux/serial_core.h>
+ /* Added dm9000 support for utu2400 */
+ #include <linux/dm9000.h>
#include <linux/platform_device.h>

#include <plat/common-smdk.h>

+ /* DM9000 Base address for SMDK2440 */
+ #define MACH_SMDK2440_DM9K_BASE (S3C2410_CS3 + 0x300)

static struct map_desc smdk2440_iodesc[] __initdata = {

+ /* Added for dm9000 */
+ static struct resource smdk2440_dm9k_resource[] = 
+ {
+     [0] = 
+      {
+           .start = MACH_SMDK2440_DM9K_BASE,
+           .end   = MACH_SMDK2440_DM9K_BASE + 3,
+           .flags = IORESOURCE_MEM
+      },
+     [1] = 
+      {
+           .start = MACH_SMDK2440_DM9K_BASE + 4,
+           .end   = MACH_SMDK2440_DM9K_BASE + 7,
+           .flags = IORESOURCE_MEM
+      },
+     [2] = 
+     {
+         .start = IRQ_EINT9,
+         .end   = IRQ_EINT9,
+         .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
+     }
+ };
+ 
+ /*
+  * The DM9000 has no eeprom, and it's MAC address is set by
+  * the bootloader before starting the kernel.
+  */
+ static struct dm9000_plat_data smdk2440_dm9k_pdata = 
+ {
+ 	.flags        = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
+ };
+ 
+ static struct platform_device smdk2440_device_eth = 
+ {
+ 	.name        = "dm9000",
+ 	.id      = -1,
+ 	.num_resources = ARRAY_SIZE(smdk2440_dm9k_resource),
+ 	.resource  = smdk2440_dm9k_resource,
+ 	.dev       = {
+ 		.platform_data   = &smdk2440_dm9k_pdata,
+ 	},
+ };

static struct platform_device *smdk2440_devices[] __initdata = {
	&s3c_device_ohci,
	&s3c_device_lcd,
	&s3c_device_wdt,
	&s3c_device_i2c0,
	&s3c_device_iis,
+  	&smdk2440_device_eth,
};

Then select the dm9000 support from:
Device Driver—-> Network device support -> Ethernet(10 or 100Mbit) —-> DM9000 support
Now testing the kernel, you will see the kernel starts with dm9000 support, thus we could use NFS for booting the system.