[U-Boot-Users] [PATCH] lan91c96 driver MAC address detection

[George G. Davis <davis_g@comcast.net>]

On Thu, Apr 29, 2004 at 06:02:01PM +0100, Dave Peverley wrote:
> Hi all,
> 
>  This is a small patch for the lan91c96 ethernet driver that adds the
> capability to automatically detect the MAC address stored in EPROM in the
> absence of a valid MAC address in the environment. It is modelled on the
> system used by the smc91111 driver as suggested by Marius Groeger 
> (thanks!)
> 
> The patch itself was created against the CVS repository tag 
> "U-Boot-1_1_0" using the command :
>  diff -purN u-boot u-boot-omap730p2 > u-boot-1.1.0-omap730p2.patch
> 
> All comments and feedback welcome.

Cool! Thanks for that! I have a minor suggestion though. Can we squelch
the warning for the "setenv ethaddr" case? Like so:

--- drivers/lan91c96.c.orig	2004-04-29 13:15:14.000000000 -0400
+++ drivers/lan91c96.c	2004-04-30 15:47:45.000000000 -0400
@@ -886,9 +886,7 @@
 	uchar v_rom_mac[6];
 
 	env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac));
-	if (env_size != sizeof(es)) {	/* Ignore if env is bad or not set */
-		printf ("\n*** Warning: ethaddr is not set properly, ignoring!!\n");
-	} else {
+	if (env_size == sizeof(es)) {
 		env_present = 1;
 		s = s_env_mac;
 
@@ -897,7 +895,8 @@
 			if (s)
 				s = (*e) ? e + 1 : e;
 		}
-	}
+	} else if (env_size >= 0)	/* Ignore if env is bad */
+		printf ("\n*** Warning: ethaddr is not set properly, ignoring!!\n");
 
 	rom_valid = get_rom_mac (v_rom_mac);	/* get ROM mac value if any */
 

I've tested your patch with the above change and it works for me:

OMAP1510 Innovator # bootp
Using MAC Address 08:00:28:32:0F:FF
BOOTP broadcast 1
DHCP client bound to address 192.168.1.91
OMAP1510 Innovator # setenv ethaddr 00:11:22:33:44
OMAP1510 Innovator # bootp

*** Warning: ethaddr is not set properly, ignoring!!
Using MAC Address 08:00:28:32:0F:FF
BOOTP broadcast 1
DHCP client bound to address 192.168.1.91
OMAP1510 Innovator # setenv ethaddr
OMAP1510 Innovator # bootp
Using MAC Address 08:00:28:32:0F:FF
BOOTP broadcast 1
DHCP client bound to address 192.168.1.91


Thanks again!

--
Regards,
George
> 
> Best Wishes,
> 
> Dave Peverley

<snip>