summaryrefslogtreecommitdiff
path: root/drivers/net
diff options
context:
space:
mode:
authorAndrew Ruder <andrew.ruder@elecsyscorp.com>2013-10-22 19:09:02 -0500
committerJoe Hershberger <joe.hershberger@ni.com>2013-11-22 17:03:19 -0600
commitc583ee16cb5db73fc299bb679ecb75a5abb3ca47 (patch)
tree6b3963bf25765c45b3ec13eab3325f6e1c183e1c /drivers/net
parent8712adfd0595ea68ce06fb22420489dacc3a6cc6 (diff)
downloadu-boot-imx-c583ee16cb5db73fc299bb679ecb75a5abb3ca47.zip
u-boot-imx-c583ee16cb5db73fc299bb679ecb75a5abb3ca47.tar.gz
u-boot-imx-c583ee16cb5db73fc299bb679ecb75a5abb3ca47.tar.bz2
net: dm9000: random mac address support
When an unprogrammed EEPROM is attached to a dm9000, the dm9000 will come up with a invalid MAC address of ff:ff:ff:ff:ff:ff. Add code that gets enabled if CONFIG_RANDOM_MACADDR is enabled that generates a random (and valid) locally administered MAC address that allows the system to network boot until a real MAC address can be configured. Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/dm9000x.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c
index f7170e0..b68d808 100644
--- a/drivers/net/dm9000x.c
+++ b/drivers/net/dm9000x.c
@@ -342,6 +342,15 @@ static int dm9000_init(struct eth_device *dev, bd_t *bd)
DM9000_iow(DM9000_ISR, ISR_ROOS | ISR_ROS | ISR_PTS | ISR_PRS);
printf("MAC: %pM\n", dev->enetaddr);
+ if (!is_valid_ether_addr(dev->enetaddr)) {
+#ifdef CONFIG_RANDOM_MACADDR
+ printf("Bad MAC address (uninitialized EEPROM?), randomizing\n");
+ eth_random_enetaddr(dev->enetaddr);
+ printf("MAC: %pM\n", dev->enetaddr);
+#else
+ printf("WARNING: Bad MAC address (uninitialized EEPROM?)\n");
+#endif
+ }
/* fill device MAC address registers */
for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++)