+/*
+ * ADMBoot specific prom routines
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <asm/addrspace.h>
+#include <asm/byteorder.h>
+
+#include <asm/mach-adm5120/adm5120_defs.h>
+#include <prom/admboot.h>
+#include "prom_read.h"
+
+#define ADMBOOT_MAGIC_MAC_BASE 0x636D676D /* 'mgmc' */
+
+int __init admboot_get_mac_base(u32 offset, u32 len, u8 *mac)
+{
+ u8 *cfg;
+ int i;
+
+ cfg = (u8 *) KSEG1ADDR(ADM5120_SRAM0_BASE + offset);
+ for (i = 0; i < len; i += 4) {
+ u32 magic;
+
+ magic = prom_read_le32(cfg + i);
+ if (magic == ADMBOOT_MAGIC_MAC_BASE) {
+ int j;
+
+ for (j = 0; j < 6; j++)
+ mac[j] = cfg[i + 4 + j];
+
+ return 0;
+ }
+ }
+
+ return -ENXIO;
+}