Index: linux-2.6.21-armeb/arch/arm/mach-ixp4xx/nslu2-setup.c
===================================================================
--- linux-2.6.21-armeb.orig/arch/arm/mach-ixp4xx/nslu2-setup.c	2007-05-09 07:22:15.000000000 -0700
+++ linux-2.6.21-armeb/arch/arm/mach-ixp4xx/nslu2-setup.c	2007-05-09 07:22:17.000000000 -0700
@@ -18,6 +18,7 @@
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
 #include <linux/leds.h>
+#include <linux/mtd/mtd.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -182,6 +183,30 @@
 	&nslu2_npe_ucode,
 };
 
+static void nslu2_flash_add(struct mtd_info *mtd)
+{
+	if (strcmp(mtd->name, "RedBoot") == 0) {
+		size_t retlen;
+		u_char mac[6];
+
+		if (mtd->read(mtd, 0x3FFB0, 6, &retlen, mac) == 0 && retlen == 6) {
+			printk(KERN_INFO "nslu2 mac: %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
+				mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+			memcpy(plat_mac0.hwaddr, mac, 6);
+		} else {
+			printk(KERN_ERR "nslu2 mac: read failed\n");
+		}
+	}
+}
+
+static void nslu2_flash_remove(struct mtd_info *mtd) {
+}
+
+static struct mtd_notifier nslu2_flash_notifier = {
+	.add = nslu2_flash_add,
+	.remove = nslu2_flash_remove,
+};
+
 static void nslu2_power_off(void)
 {
 	/* This causes the box to drop the power and go dead. */
@@ -224,6 +249,8 @@
 	(void)platform_device_register(&nslu2_uart);
 
 	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
+
+	register_mtd_user(&nslu2_flash_notifier);
 }
 
 MACHINE_START(NSLU2, "Linksys NSLU2")