[U-Boot] [PATCH 6/6] da850: read MAC address from I2C EEPROM on AM18xx EVM

[nagabhushana.netagunte at ti.com]

From: Nagabhushana Netagunte <nagabhushana.netagunte at ti.com>

The AM18xx EVM contains MAC address in I2C EEPROM. Introduced
a new macro CONFIG_MAC_ADDR_IN_EEPROM to where to look for mac
address. This patch reads MAC address from I2C EEPROM and updates
environment variable.

Signed-off-by: Manjunathappa, Prakash <prakash.pm at ti.com>
Signed-off-by: Nagabhushana Netagunte <nagabhushana.netagunte at ti.com>
---
 board/davinci/da8xxevm/da850evm.c |    9 ++++++++-
 include/configs/da850_am18xxevm.h |    7 +++++++
 2 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 31ab0d6..bcdaf2b 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -267,8 +267,9 @@ int misc_init_r(void)
 
 	dspwake();
 
-#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
+#if defined(CONFIG_MAC_ADDR_IN_SPIFLASH) || defined(CONFIG_MAC_ADDR_IN_EEPROM)
 	if (!eth_getenv_enetaddr("ethaddr", buff)) {
+#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
 		ret = get_mac_addr(buff);
 		if (ret != 0)
 			return -EINVAL;
@@ -282,6 +283,12 @@ int misc_init_r(void)
 		sprintf((char *)enetaddr, "%pM", buff);
 
 		eth_setenv_enetaddr("ethaddr", enetaddr);
+#else
+		/* Read Ethernet MAC address from EEPROM */
+		if (dvevm_read_mac_address(enetaddr))
+			/* Set Ethernet MAC address from EEPROM */
+			davinci_sync_env_enetaddr(enetaddr);
+#endif
 	}
 #endif
 	return 0;
diff --git a/include/configs/da850_am18xxevm.h b/include/configs/da850_am18xxevm.h
index 29d580b..b525f14 100644
--- a/include/configs/da850_am18xxevm.h
+++ b/include/configs/da850_am18xxevm.h
@@ -93,6 +93,12 @@
 #define CONFIG_SYS_I2C_EXPANDER_ADDR   0x20
 
 /*
+ * I2C EEPROM definitions EEPROM chip
+ */
+#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	2
+#define CONFIG_SYS_I2C_EEPROM_ADDR	0x50
+
+/*
  * Flash & Environment
  */
 #ifdef CONFIG_USE_NAND
@@ -173,6 +179,7 @@
 #define CONFIG_SYS_LONGHELP
 #define CONFIG_CRC32_VERIFY
 #define CONFIG_MX_CYCLIC
+#define CONFIG_MAC_ADDR_IN_EEPROM
 
 /*
  * Linux Information
-- 
1.6.2.4