From: John Bowler <[email protected]>
Implement maclist support for the Linksys NSLU2. The MAC address is read
from the RedBoot partition in flash.
Signed-off-by: John Bowler <[email protected]>
Signed-off-by: Martin Michlmayr <[email protected]>
Signed-off-by: Alessandro Zummo <[email protected]>
Signed-off-by: Rod Whitby <[email protected]>
--
arch/arm/mach-ixp4xx/Kconfig | 4 +--
arch/arm/mach-ixp4xx/nslu2-setup.c | 39 +++++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+), 2 deletions(-)
--- linux-nslu2.orig/arch/arm/mach-ixp4xx/nslu2-setup.c 2006-02-06 22:34:55.000000000 +0100
+++ linux-nslu2/arch/arm/mach-ixp4xx/nslu2-setup.c 2006-02-06 22:35:31.000000000 +0100
@@ -16,11 +16,14 @@
#include <linux/kernel.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
+#include <linux/mtd/mtd.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
+#include <net/maclist.h>
+
static struct flash_platform_data nslu2_flash_data = {
.map_name = "cfi_probe",
.width = 2,
@@ -117,6 +120,37 @@ static void nslu2_power_off(void)
gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
}
+/*
+ * When the RedBoot partition is added the MAC address is read from
+ * it.
+ */
+static void nslu2_flash_add(struct mtd_info *mtd) {
+ if (strcmp(mtd->name, "RedBoot") == 0) {
+ size_t retlen;
+ u_char mac[6];
+
+ /* The MAC is at a known offset... */
+ 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]);
+ maclist_add(mac);
+ } else {
+ printk(KERN_ERR "NSLU2 MAC: read failed\n");
+ }
+ }
+}
+
+/*
+ * Nothing to do on remove at present.
+ */
+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 __init nslu2_init(void)
{
/* The NSLU2 has a 33MHz crystal on board - 1.01% different
@@ -124,6 +158,11 @@ 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);
+
ixp4xx_sys_init();
pm_power_off = nslu2_power_off;
--
Martin Michlmayr
http://www.cyrius.com/