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

[Robin Getz]

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>


---

Index: net/net.c
===================================================================
--- net/net.c	(revision 1968)
+++ net/net.c	(working copy)
@@ -1273,6 +1274,15 @@
 			/* 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);

Index: README
===================================================================
--- README	(revision 1968)
+++ README	(working copy)
@@ -1165,6 +1165,11 @@
 		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