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arch/arm/mach-ixp4xx/nslu2-setup.c | 62 +++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
--- linux-ixp4xx.orig/arch/arm/mach-ixp4xx/nslu2-setup.c 2006-03-27 14:42:07.000000000 +0200
+++ linux-ixp4xx/arch/arm/mach-ixp4xx/nslu2-setup.c 2006-03-27 14:45:45.000000000 +0200
@@ -16,6 +16,9 @@
#include <linux/kernel.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
+#include <linux/mtd/mtd.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -117,6 +120,59 @@ static void nslu2_power_off(void)
gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
}
+/*
+ * When the RedBoot config partition is added the MAC address is read from
+ * it.
+ */
+static struct sockaddr mac;
+
+static void nslu2_flash_add(struct mtd_info *mtd) {
+ if (strcmp(mtd->name, "RedBoot") == 0) {
+ size_t retlen;
+ int err;
+ /* the mac addr is at a known offset */
+ err = mtd->read(mtd, 0x3FFD8, 6, &retlen, (u8 *) &mac.sa_data);
+ if (err != 0 || retlen != 6)
+ printk(KERN_ERR "nslu2: mac addr read failed\n");
+ else
+ printk(KERN_INFO
+ "nslu2: mac %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
+ mac.sa_data[0], mac.sa_data[1], mac.sa_data[2],
+ mac.sa_data[3], mac.sa_data[4], mac.sa_data[5]);
+ }
+}
+
+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 int nslu2_netdev_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = ptr;
+
+ /* identify the ixp4xx eth, port 1 */
+ if (dev->dev_addr[1] != 0x02 || dev->dev_addr[2] != 0xB3
+ || dev->dev_addr[5] != 0x01)
+ return NOTIFY_DONE;
+
+ if (event == NETDEV_REGISTER && is_valid_ether_addr(mac.sa_data)) {
+ mac.sa_family = dev->type;
+ dev_set_mac_address(dev, &mac);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block nslu2_netdev_notifier = {
+ .notifier_call = nslu2_netdev_event,
+};
+
static void __init nslu2_init(void)
{
/* The NSLU2 has a 33MHz crystal on board - 1.01% different
@@ -124,6 +180,12 @@ static void __init nslu2_init(void)
*/
ixp4xx_set_board_tick_rate(66000000);
+ /* The flash has an ethernet MAC embedded in it which we need,
+ * that is all this notifier does.
+ */
+ register_mtd_user(&nslu2_flash_notifier);
+ register_netdevice_notifier(&nslu2_netdev_notifier);
+
ixp4xx_sys_init();
nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
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