On 18/09/2024 18:29, Steve McIntyre wrote:
On Wed, Sep 18, 2024 at 05:30:35PM +0100, Michael Howard wrote:
On 18/09/2024 16:38, YOYO wrote:
It seems it a ideal idea to switch from u-Boot to UEFI on AR0.
Would you please share about how you install UEFI and how to revert to
u-Boot when needed? I've found some tutorials, but the urls of the UEFI
firmware seemed to be invalid.
I can't be of much help I'm afraid as it was a long time ago and I just used
the information and files available on the net at the time. I'm not at home at
the moment but when I am I will see if I still have the relevant files, if
nobody else chirps up before then. It will be a long shot though.
I've got the files needed for switching the APM Mustang here at
https://www.einval.com/mustang/easy-uefi/
The instructions are for APM's own Mustang dev board - the Gigabyte
AR0 might be compatible here or it might be different, be careful!
So, the uefi image needed at the time was 'mp30ar0_tianocore_media.img'
which was provided by Phong Vo, in the archive
mp30ar0_tianocore_binaries.tar.xz. I do still have the file.
The basic process was;
a) Place mp30ar0_tianocore_media.img on a TFTP server as
`mp30ar0/mp30ar0_tianocore_media.img'.
b) Within u-boot run thr following;
setenv ipaddr xx.xx.xx.xx # server's own IP address
setenv serverip yy.yy.yy.yy # IP address of TFTP server
setenv media_img mp30ar0_tianocore_media.img
run spi_load # check this command succeeds
run spi_update
reset
I think that the above instructions rely upon 'user_dir' being set to
'mp30ar0'.
Obviously, as Steve says, be careful.
--
Michael Howard.
