omap: Devkit8000: Use DIE id to initialize dm9000 MAC address

The devkit8000 boards often come with empty EEPROM thus without
valid ethernet MAC address. The DIE id to MAC formula is copied from
u-boot.

Signed-off-by: Kan-Ru Chen <kanru@0xlab.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-devkit8000.c

@@ -33,6 +33,7 @@
 #include <linux/i2c/twl.h>
 
 #include <mach/hardware.h>
+#include <mach/id.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -560,13 +561,26 @@ static struct platform_device omap_dm9000_dev = {
 
 static void __init omap_dm9000_init(void)
 {
+	unsigned char *eth_addr = omap_dm9000_platdata.dev_addr;
+	struct omap_die_id odi;
+
 	if (gpio_request(OMAP_DM9000_GPIO_IRQ, "dm9000 irq") < 0) {
 		printk(KERN_ERR "Failed to request GPIO%d for dm9000 IRQ\n",
 			OMAP_DM9000_GPIO_IRQ);
 		return;
 		}
 
 	gpio_direction_input(OMAP_DM9000_GPIO_IRQ);
+
+	/* init the mac address using DIE id */
+	omap_get_die_id(&odi);
+
+	eth_addr[0] = 0x02; /* locally administered */
+	eth_addr[1] = odi.id_1 & 0xff;
+	eth_addr[2] = (odi.id_0 & 0xff000000) >> 24;
+	eth_addr[3] = (odi.id_0 & 0x00ff0000) >> 16;
+	eth_addr[4] = (odi.id_0 & 0x0000ff00) >> 8;
+	eth_addr[5] = (odi.id_0 & 0x000000ff);
 }
 
 static struct platform_device *devkit8000_devices[] __initdata = {