board: atmel: Create board/$(VENDOR)/common folder

Create board/$(VENDOR)/common folder to accommodate the common code
shared by other atmel boards, now put the code to set ethernet mac
address from eeprom, which uses the i2c eeprom driver.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 59 insertions, 0 deletions

diff --git a/board/atmel/common/Makefile b/board/atmel/common/Makefile
new file mode 100644
index 0000000..6d9c685
--- /dev/null
+++ b/board/atmel/common/Makefile
@@ -0,0 +1,11 @@
+#
+# Copyright (C) 2017 Microchip
+#		      Wenyou Yang <wenyou.yang@microchip.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += board.o
+ifndef CONFIG_SPL_BUILD
+obj-$(CONFIG_I2C_EEPROM) += mac_eeprom.o
+endif
diff --git a/board/atmel/common/board.c b/board/atmel/common/board.c
new file mode 100644
index 0000000..7e326d9
--- /dev/null
+++ b/board/atmel/common/board.c
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2017 Microchip
+ *		      Wenyou Yang <wenyou.yang@microchip.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+void dummy(void)
+{
+}
diff --git a/board/atmel/common/mac_eeprom.c b/board/atmel/common/mac_eeprom.c
new file mode 100644
index 0000000..60ddf00
--- /dev/null
+++ b/board/atmel/common/mac_eeprom.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2017 Microchip
+ *		      Wenyou Yang <wenyou.yang@microchip.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c_eeprom.h>
+#include <netdev.h>
+
+int at91_set_ethaddr(int offset)
+{
+	const int ETH_ADDR_LEN = 6;
+	unsigned char ethaddr[ETH_ADDR_LEN];
+	const char *ETHADDR_NAME = "ethaddr";
+	struct udevice *dev;
+	int ret;
+
+	if (env_get(ETHADDR_NAME))
+		return 0;
+
+	ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
+	if (ret)
+		return ret;
+
+	ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
+	if (ret)
+		return ret;
+
+	if (is_valid_ethaddr(ethaddr))
+		eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
+
+	return 0;
+}