ARM: omap4-panda: Add MAC address creation for panda
Add a MAC address create based on the OMAP die ID registers.
Then poplulate the ethaddr enviroment variable so that the device
tree alias can be updated prior to boot.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c
index e838ffd..bc3c292 100644
--- a/board/ti/panda/panda.c
+++ b/board/ti/panda/panda.c
@@ -133,6 +133,7 @@
{
int phy_type;
u32 auxclk, altclksrc;
+ uint8_t device_mac[6];
/* EHCI is not supported on ES1.0 */
if (omap_revision() == OMAP4430_ES1_0)
@@ -186,6 +187,21 @@
writel(altclksrc, &scrm->altclksrc);
+ if (!getenv("usbethaddr")) {
+ /*
+ * create a fake MAC address from the processor ID code.
+ * first byte is 0x02 to signify locally administered.
+ */
+ device_mac[0] = 0x02;
+ device_mac[1] = readl(STD_FUSE_DIE_ID_3) & 0xff;
+ device_mac[2] = readl(STD_FUSE_DIE_ID_2) & 0xff;
+ device_mac[3] = readl(STD_FUSE_DIE_ID_1) & 0xff;
+ device_mac[4] = readl(STD_FUSE_DIE_ID_0) & 0xff;
+ device_mac[5] = (readl(STD_FUSE_DIE_ID_0) >> 8) & 0xff;
+
+ eth_setenv_enetaddr("usbethaddr", device_mac);
+ }
+
return 0;
}