Program net device MAC addresses after initializing

Add a new function to the eth_device struct for programming a network
controller's hardware address.

After all network devices have been initialized and the proper MAC address
for each has been determined, make a device driver call to program the
address into the device.  Only device instances with valid unicast addresses
will be programmed.

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Acked-by: Detlev Zundel <dzu@denx.de>
Tested-by: Prafulla Wadaskar <prafulla@marvell.com>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Thomas Chou <thomas@wytron.com.tw>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/eth.c b/net/eth.c
index aff6987..45e4a26 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -60,6 +60,14 @@ int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr)
 	return eth_getenv_enetaddr(enetvar, enetaddr);
 }
 
+static int eth_mac_skip(int index)
+{
+	char enetvar[15];
+	char *skip_state;
+	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
+	return ((skip_state = getenv(enetvar)) != NULL);
+}
+
 #ifdef CONFIG_NET_MULTI
 
 /*
@@ -242,6 +250,11 @@ int eth_initialize(bd_t *bis)
 
 				memcpy(dev->enetaddr, env_enetaddr, 6);
 			}
+			if (dev->write_hwaddr &&
+				!eth_mac_skip(eth_number) &&
+				is_valid_ether_addr(dev->enetaddr)) {
+				dev->write_hwaddr(dev);
+			}
 
 			eth_number++;
 			dev = dev->next;