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GUIDs and MACs can be changed separately on ConnectX4
Preparing a Binary Firmware Image for Pre-assembly
Burning
In some cases, OEMs may prefer to pre-burn the flash before it is assembled on board.When pre-
burning, the GUIDs/MACs inside the image should be unique per device. Thefollowing are two methods
to pre-burn an image. You can choose the best method suitable foryour needs.
Method 1: Pre-burn an Image with Blank GUIDs/MACs
In this method, the image is generated with blank GUIDs and CRCs. The GUIDs are set after thedevice
is assembled using the mstflint "sg" command. To set GUIDs take less than 1 second whenrunning on
an image with blank GUIDs (through a PCI device).
To pre-burn an image with blank GUIDs/MACs:
Burn the image to a flash using an external burner.
(Optional) After assembly, query the image on flash to verify there are no GUIDs on the
device.
# mstflint -d 41:00.0 q
Image type: FS2
FW Version: 2.31.5050
FW Release Date: 4.5.2014
Device ID: 4099
Description: Node Port1 Port2 Sys image
GUIDs: ffffffffffffffff ffffffffffffffff ffffffffffffffff
ffffffffffffffff
MACs: ffffffffffffffff ffffffffffffffff
VSD: n/a
PSID: MT_1090120019
-W- GUIDs/MACs values and their CRC are not set.
Set the correct GUIDs. Since the image is with blank GUIDs, this operation takes less
than 1 second.
# mstflint -d 41:00.0 -guid 0x0002c9030abcdef0 -mac 0x0002c9bcdef1 sg
Query the image on flash to verify that the GUIDs are set correctly.
A device that is burnt with blank GUIDs/MACs will not boot as a functional network device as
long as the GUIDs/MACs are not set.
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