[U-Boot] [PATCH] - save the server's mac address...

[Robin Getz]

On Tue 21 Jul 2009 02:37, Ben Warren pondered:
> Can you please re-submit using git tools?

From: Robin Getz <rgetz at blackfin.uclinux.org>

Linux's netconsole works much better when you can pass it the MAC address of
the server. (otherwise it just uses broadcast, which everyone else on my
network complains about :)
 
This sets the env var "serveraddr" (to match ethaddr), so that you can pass
it to linux with whatever bootargs you want to....
 
addnetconsole=set bootargs $(bootargs) netconsole=@$(ipaddr)/eth0,@$(serverip)/$(serveraddr)

Signed-of-by: Robin Getz <rgetz at blackfin.uclinux.org>

-----

diff --git a/README b/README
index 4c74cb7..9071472 100644
--- a/README
+++ b/README
@@ -1184,6 +1184,11 @@ The following options need to be configured:
 		Defines a default value for the IP address of a TFTP
 		server to contact when using the "tftboot" command.
 
+		CONFIG_KEEP_SERVERADDR
+
+		Keeps the server's MAC address, in the env 'serveraddr'
+		for passing to bootargs (like Linux's netconsole option)
+
 - Multicast TFTP Mode:
 		CONFIG_MCAST_TFTP
 
diff --git a/net/net.c b/net/net.c
index 7ce947d..641c37c 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1287,6 +1287,15 @@ NetReceive(volatile uchar * inpkt, int len)
 			/* are we waiting for a reply */
 			if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
 				break;
+
+#ifdef CONFIG_KEEP_SERVERADDR
+			if (NetServerIP == NetArpWaitPacketIP) {
+				char buf[20];
+				sprintf(buf, "%pM", arp->ar_data);
+				setenv("serveraddr", buf);
+			}
+#endif
+
 #ifdef ET_DEBUG
 			printf("Got ARP REPLY, set server/gtwy eth addr (%pM)\n",
 				arp->ar_data);