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From 2e852db8367da3d3f60230419bd36bab2535c0ff Mon Sep 17 00:00:00 2001
From: Hugo Villeneuve <hugo@hugovil.com>
Date: Thu, 5 Mar 2009 17:11:05 -0500
Subject: [PATCH 04/12] Davinci: Enable MAC address to be specified on kernel cmd line
Signed-off-by: Hugo Villeneuve <hugo@hugovil.com>
---
arch/arm/mach-davinci/devices.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index a0f5a60..db433be 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -353,6 +353,27 @@ static struct platform_device dm646x_emac_device = {
}
};
+/* Get Ethernet address from kernel boot params */
+static u8 davinci_bootloader_mac_addr[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+static int /*__init */ davinci_bootloader_mac_setup(char *str)
+{
+ int i;
+
+ if (str == NULL)
+ return 0;
+
+ /* Conversion of a MAC address from a string (AA:BB:CC:DD:EE:FF)
+ * to a 6 bytes array. */
+ for (i = 0; i < 6; i++)
+ davinci_bootloader_mac_addr[i] =
+ simple_strtol(&str[i*3], (char **)NULL, 16);
+
+ return 1;
+}
+/* Get MAC address from kernel boot parameter eth=AA:BB:CC:DD:EE:FF */
+__setup("eth=", davinci_bootloader_mac_setup);
+
void davinci_init_emac(char *mac_addr)
{
DECLARE_MAC_BUF(buf);
@@ -366,6 +387,8 @@ void davinci_init_emac(char *mac_addr)
if (mac_addr && is_valid_ether_addr(mac_addr))
memcpy(emac_pdata.mac_addr, mac_addr, 6);
+ else if (is_valid_ether_addr(davinci_bootloader_mac_addr))
+ memcpy(emac_pdata.mac_addr, davinci_bootloader_mac_addr, 6);
else {
/* Use random MAC if none passed */
random_ether_addr(emac_pdata.mac_addr);
--
1.5.4.5
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