+#if defined(CONFIG_AX88796)
+#define ETHER_ADDR_LEN 6
+static u8 ether_mac_addr[ETHER_ADDR_LEN];
+
+void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
+{
+ int i;
+ u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
+
+ /*
+ * If the bootloader passed in a serial boot tag, which contains a
+ * valid ethernet MAC, pass it to the interface. Toradex ships the
+ * modules with their own bootloader which provides a valid MAC
+ * this way.
+ */
+
+ for (i = 0; i < ETHER_ADDR_LEN; i++) {
+ ether_mac_addr[i] = serial & 0xff;
+ serial >>= 8;
+ }
+
+ if (is_valid_ether_addr(ether_mac_addr)) {
+ plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
+ plat_data->mac_addr = ether_mac_addr;
+ printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
+ __func__);
+ } else {
+ plat_data->flags |= AXFLG_MAC_FROMDEV;
+ printk(KERN_INFO "%s(): no valid serial boot tag found, "
+ "taking MAC from device\n", __func__);
+ }
+}
+#endif
+