Hi all,
I am trying to flash a new MAC address into the NVM of the X540 controller
using the Linux 3.5 kernel with option CONFIG_IXGBE set to yes.
# uname -a
Linux (none) 3.5.5 #2 SMP Wed Oct 3 11:00:33 PDT 2012 x86_64 GNU/Linux
# ethtool -i eth0
driver: ixgbe
version: 3.9.15-k
firmware-version: 0x80000314
bus-info: 0000:44:00.0
After reading the X540 Controller datasheet, I have figured out the offset of
the MAC address start at location 1220 in the NVM (this is for the one of the
two functions of the PCI device). I verify the correctness of the offset by
doing the following.
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:11:22:33:44:55
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
# /sbin/ethtool -e eth0 offset 1220 length 6
Offset Values
------ ------
0x04c4 00 11 22 33 44 55
Then, I program the MAC address by doing the following:
# /sbin/ethtool -e eth0 offset 1220 length 6
Offset Values
------ ------
0x04c4 00 11 22 33 44 55
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1220 value 0
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1221 value 0x0e
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1222 value 0xb1
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1223 value 0xdf
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1224 value 0xd5
# /sbin/ethtool -E eth0 magic 0x15288086 offset 1225 value 0xa8
I verify that the content of the NVM has been changed to the new MAC address.
# /sbin/ethtool -e eth0 offset 1220 length 6
Offset Values
------ ------
0x04c4 00 0e b1 df d5 a8
After rebooting the machine and power cycling the box, the kernel comes up but
the content of the NVM has not been changed, and it is still the original value
(00:11:22:33:44:55).
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:11:22:33:44:55
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
# /sbin/ethtool -e eth0 offset 1220 length 6
Offset Values
------ ------
0x04c4 00 11 22 33 44 55
I would really appreciate that if anyone can tell me what is wrong with this?
Also, I have obtained a utility "eeupdate64e" and a driver "iqvlinux.ko" from
Intel and it works fine. So, it is not a hardware design problem at all.
Thank you very much.
--Steven
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