Thank you for your instructions.
But I still have some questions to ask.
1. Are following two urls right?
Tutorial:
https://lists.centos.org/pipermail/arm-dev/
\
2016-March/001743.html
Required UEFI image:
https://dl.dropboxusercontent.com/u/20403943/ \
mp30ar0_tianocore_binaries.tar.xz
2. Is the UEFI image burnt into the on-borad SPI flash(or perhaps EEPROM)
or I need to re-load it every time I startup the machine.
3. If the image is burnt into the on-board storage,
then what should I do if I want to return to u-Boot mode?
4. Is there any way to rescue the motherboard if something unexpected
happens
during flashing and the board is not bootable? Do I need a BIOS
programmer
to rescue? If so, which chip is the BIOS program on?
Thank you again for your patient guidance and generous help.
Best Regards,
Richard
BTW: the UEFI image urs seems not working and I can't get access to it.
Would you please help me test if it's still working so that I
could know
whether my network is to be blamed.
------------------ Origin ------------------
From:
"Michael Howard"
<[email protected]>;
Date: 2024-09-19(Thu) 1:57am
To: "debian-arm"<[email protected]>;
Subject: Re: Problems about installing Debian on Arm64
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.
