openwrtv4/target/linux/brcm63xx/patches-3.9/038-MIPS-BCM63XX-provide-a-MAC-address-for-BCM3368-chips.patch

From 404fdc457082772ff52e22988e09e82c0d6e8780 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <florian@openwrt.org>
Date: Tue, 18 Jun 2013 16:55:42 +0000
Subject: [PATCH 4/6] MIPS: BCM63XX: provide a MAC address for BCM3368 chips

The BCM3368 SoC uses a NVRAM format which is not compatible with the one
used by CFE, provide a default MAC address which is suitable for use and
which is the default one also being used by the bootloader on these
chips.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/5498/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/bcm63xx/nvram.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/arch/mips/bcm63xx/nvram.c
+++ b/arch/mips/bcm63xx/nvram.c
@@ -45,6 +45,7 @@ void __init bcm63xx_nvram_init(void *add
 {
 	unsigned int check_len;
 	u32 crc, expected_crc;
+	u8 hcs_mac_addr[ETH_ALEN] = { 0x00, 0x10, 0x18, 0xff, 0xff, 0xff };
 
 	/* extract nvram data */
 	memcpy(&nvram, addr, sizeof(nvram));
@@ -65,6 +66,15 @@ void __init bcm63xx_nvram_init(void *add
 	if (crc != expected_crc)
 		pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
 			expected_crc, crc);
+
+	/* Cable modems have a different NVRAM which is embedded in the eCos
+	 * firmware and not easily extractible, give at least a MAC address
+	 * pool.
+	 */
+	if (BCMCPU_IS_3368()) {
+		memcpy(nvram.mac_addr_base, hcs_mac_addr, ETH_ALEN);
+		nvram.mac_addr_count = 2;
+	}
 }
 
 u8 *bcm63xx_nvram_get_name(void)