[U-Boot] [PATCH 2/2] calimain: Generate random MAC address for factory tests

[Christian Riesch]

Signed-off-by: Christian Riesch <christian.riesch at omicron.at>
---
 board/omicron/calimain/calimain.c |   31 ++++++++++++++++++++++++++++++-
 include/configs/calimain.h        |    2 ++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/board/omicron/calimain/calimain.c b/board/omicron/calimain/calimain.c
index 1060a1f..80e3893 100644
--- a/board/omicron/calimain/calimain.c
+++ b/board/omicron/calimain/calimain.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011 OMICRON electronics GmbH
+ * Copyright (C) 2011-2013 OMICRON electronics GmbH
  *
  * Based on da850evm.c. Original Copyrights follow:
  *
@@ -136,6 +136,35 @@ int board_init(void)
 	return 0;
 }
 
+/* seed random number generator with uninitialized SRAM content */
+static void srand_sram(void)
+{
+	int *p;
+	int seed = 0;
+
+	for (p = (int *) 0x80000000; p < (int *) 0x8001ffff; p++)
+		seed ^= *p;
+
+	srand(seed);
+}
+
+int board_late_init(void)
+{
+	uchar enetaddr[6];
+
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
+		srand_sram();
+		eth_random_enetaddr(enetaddr);
+		if (eth_setenv_enetaddr("ethaddr", enetaddr)) {
+			printf("Failed to set random ethernet address\n");
+		} else {
+			printf("Setting random ethernet address %pM.\n",
+			       enetaddr);
+		}
+	}
+	return 0;
+}
+
 #ifdef CONFIG_DRIVER_TI_EMAC
 /*
  * Initializes on-board ethernet controllers.
diff --git a/include/configs/calimain.h b/include/configs/calimain.h
index 5c2b35d..8cea0d9 100644
--- a/include/configs/calimain.h
+++ b/include/configs/calimain.h
@@ -30,6 +30,7 @@
 #define CONFIG_DRIVER_TI_EMAC
 #define MACH_TYPE_CALIMAIN	3528
 #define CONFIG_MACH_TYPE	MACH_TYPE_CALIMAIN
+#define CONFIG_BOARD_LATE_INIT
 
 /*
  * SoC Configuration
@@ -202,6 +203,7 @@
 #define CONFIG_BOOTP_DNS2
 #define CONFIG_BOOTP_SEND_HOSTNAME
 #define CONFIG_NET_RETRY_COUNT	10
+#define CONFIG_RANDOM_MACADDR
 #endif
 
 /*
-- 
1.7.9.5