The devkit8000 debug 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@xxxxxxxxx>
---
arch/arm/mach-omap2/board-devkit8000.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index a2a8afe..807ceee 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -45,6 +45,7 @@
#include <plat/usb.h>
#include <plat/timer-gp.h>
#include <plat/display.h>
+#include <plat/io.h>
#include <plat/mcspi.h>
#include <linux/input/matrix_keypad.h>
@@ -66,6 +67,10 @@
#define OMAP_DM9000_GPIO_IRQ 25
#define OMAP3_DEVKIT_TS_GPIO 27
+#define DIE_ID_REG_BASE (L4_34XX_PHYS + 0xA000)
+#define DIE_ID_REG_0 0x218
+#define DIE_ID_REG_1 0x21C
+
struct flash_partitions {
struct mtd_partition *parts;
int nr_parts;
@@ -603,6 +608,9 @@ static struct platform_device omap_dm9000_dev = {
static void __init omap_dm9000_init(void)
{
+ unsigned char *eth_addr = omap_dm9000_platdata.dev_addr;
+ unsigned int die_id_0;
+
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);
@@ -610,6 +618,15 @@ static void __init omap_dm9000_init(void)
}
gpio_direction_input(OMAP_DM9000_GPIO_IRQ);
+
+ /* init the mac address using DIE id */
+ die_id_0 = omap_readl(DIE_ID_REG_BASE + DIE_ID_REG_0);
+ eth_addr[0] = 0x02; /* locally administered */
+ eth_addr[1] = omap_readl(DIE_ID_REG_BASE + DIE_ID_REG_1) & 0xff;
+ eth_addr[2] = (die_id_0 & 0xff000000) >> 24;
+ eth_addr[3] = (die_id_0 & 0x00ff0000) >> 16;
+ eth_addr[4] = (die_id_0 & 0x0000ff00) >> 8;
+ eth_addr[5] = (die_id_0 & 0x000000ff);
}
static struct platform_device *devkit8000_devices[] __initdata = {
--
1.7.1
--
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