RE: [microblaze-uclinux] Changing ethernet MAC for production(speeding up the process)

[hoefle marco <marco.hoefle@xxxxxxxxxxxxx>]

> Hi,
> > From: hoefle marco [mailto:marco.hoefle@xxxxxxxxxxxxx]:
> > When ethaddr and macaddr are set correctly the ethernet lite driver
> > should use the "new" mac address, right?
> Yes, the bootloader will pass your edited flash data to the kernel as command-line parameters.
> You must tweek the CRC checksum of the flash data to avoid the CRC failure. Then you edited data will be accepted when the bootloader reads the flash sector.
> CU, Falk

Hi Falk,
your hint helped. After getting the 5 "golden mtdblocks" from a working
board I modify that on containing the u-boot environment with the new
MAC. Afterward I do:

uboot_envcrc ./mtdblock2 mtdblock_out 
(I used the CRC routine from u-boot for this tool, if anybody is
interested I am happy to forward it)

cat mtdblock0 mtdblock1 mtdblock_out mtdblock3 mtdblock4 mtdblock5 >
spartan_flash_image

The spartan_flash_image can now be programmed via EDK flashwriter
utility directly to the board.

Petalinux is using mtdblock3 as "config". I want to get rid of that
partition but it would be good to know first what its for :-)
Cheers,
Marco


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