If 'ethaddr' is not set, we will get the ethernet address from AT24MAC,
and set it to 'ethaddr' variable.
Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
Signed-off-by: Songjun Wu <songjun...@microchip.com>
Reviewed-by: Andreas Bießmann <biessm...@corscience.de>
---
Changes in v3:
- Collect Reviewed-by tag.
- Rename CONFIG_AT24MAC_ADDR and CONFIG_AT24MAC_REG to AT24MAC_ADDR
and AT24MAC_REG, removing the prefix CONFIG_, to avoid compile
warning.
Changes in v2: None
board/atmel/sama5d2_xplained/sama5d2_xplained.c | 51 +++++++++++++++++++++++++
include/configs/sama5d2_xplained.h | 6 +++
2 files changed, 57 insertions(+)
diff --git a/board/atmel/sama5d2_xplained/sama5d2_xplained.c
b/board/atmel/sama5d2_xplained/sama5d2_xplained.c
index 7ccadf2..cceccd2 100644
--- a/board/atmel/sama5d2_xplained/sama5d2_xplained.c
+++ b/board/atmel/sama5d2_xplained/sama5d2_xplained.c
@@ -7,6 +7,8 @@
#include <common.h>
#include <atmel_hlcdc.h>
+#include <dm.h>
+#include <i2c.h>
#include <lcd.h>
#include <mmc.h>
#include <net.h>
@@ -192,6 +194,55 @@ int board_eth_init(bd_t *bis)
return rc;
}
+#ifdef CONFIG_CMD_I2C
+static int set_ethaddr_from_eeprom(void)
+{
+ const int ETH_ADDR_LEN = 6;
+ unsigned char ethaddr[ETH_ADDR_LEN];
+ const char *ETHADDR_NAME = "ethaddr";
+ struct udevice *bus, *dev;
+
+ if (getenv(ETHADDR_NAME))
+ return 0;
+
+ if (uclass_get_device_by_seq(UCLASS_I2C, 1, &bus)) {
+ printf("Cannot find I2C bus 1\n");
+ return -1;
+ }
+
+ if (dm_i2c_probe(bus, AT24MAC_ADDR, 0, &dev)) {
+ printf("Failed to probe I2C chip\n");
+ return -1;
+ }
+
+ if (dm_i2c_read(dev, AT24MAC_REG, ethaddr, ETH_ADDR_LEN)) {
+ printf("Failed to read ethernet address from EEPROM\n");
+ return -1;
+ }
+
+ if (!is_valid_ethaddr(ethaddr)) {
+ printf("The ethernet address read from EEPROM is not valid!\n");
+ return -1;
+ }
+
+ return eth_setenv_enetaddr(ETHADDR_NAME, ethaddr);
+}
+#else
+static int set_ethaddr_from_eeprom(void)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+ set_ethaddr_from_eeprom();
+
+ return 0;
+}
+#endif
+
/* SPL */
#ifdef CONFIG_SPL_BUILD
void spl_board_init(void)
diff --git a/include/configs/sama5d2_xplained.h
b/include/configs/sama5d2_xplained.h
index 399d40f..c3515cc 100644
--- a/include/configs/sama5d2_xplained.h
+++ b/include/configs/sama5d2_xplained.h
@@ -15,6 +15,8 @@
#include "at91-sama5_common.h"
+#define CONFIG_MISC_INIT_R
+
/* SDRAM */
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SYS_SDRAM_BASE ATMEL_BASE_DDRCS
@@ -54,6 +56,10 @@
#define CONFIG_DOS_PARTITION
#endif
+/* I2C */
+#define AT24MAC_ADDR 0x5c
+#define AT24MAC_REG 0x9a
+
/* Ethernet Hardware */
#define CONFIG_MACB
#define CONFIG_RMII
--
2.7.4
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