ENGR00161617 - [MX6] : FEC get MAC address from OCOTP.

- FEC get the default MAC address from OCOTP.
- If the MAC address is all zero, get the random address.
- But, if add para "fec_mac=xx:xx:xx:xx:xx:xx" in uboot,
  FEC will get the last MAC address from uboot para.

 Signed-off-by: Fugang Duan  <B38611@freescale.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/arch/arm/mach-mx6/mx6_fec.c b/arch/arm/mach-mx6/mx6_fec.c
new file mode 100644
index 000000000000..9d3c82442ace
--- /dev/null
+++ b/arch/arm/mach-mx6/mx6_fec.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include <linux/fec.h>
+#include <linux/etherdevice.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include "devices-imx6q.h"
+
+#define HW_OCOTP_MACn(n)        (0x00000250 + (n) * 0x10)
+
+static int fec_get_mac_addr(unsigned char *mac)
+{
+	unsigned int value;
+
+	value = readl(MX6_IO_ADDRESS(OCOTP_BASE_ADDR) + HW_OCOTP_MACn(0));
+	mac[5] = value & 0xff;
+	mac[4] = (value >> 8) & 0xff;
+	mac[3] = (value >> 16) & 0xff;
+	mac[2] = (value >> 24) & 0xff;
+	value = readl(MX6_IO_ADDRESS(OCOTP_BASE_ADDR) + HW_OCOTP_MACn(1));
+	mac[1] = value & 0xff;
+	mac[0] = (value >> 8) & 0xff;
+
+	return 0;
+}
+
+void imx6_init_fec(struct fec_platform_data fec_data)
+{
+	fec_get_mac_addr(fec_data.mac);
+	if (!is_valid_ether_addr(fec_data.mac))
+		random_ether_addr(fec_data.mac);
+
+	imx6q_add_fec(&fec_data);
+}