[Trisquel-devel] Trying to boot Trisquel on rockpro64

[Denis 'GNUtoo' Carikli]

On Fri, 31 Jan 2025 18:53:24 +0100
David Lecompte <trisquel at metani.fr> wrote:

> I followed the advice at
> https://wiki.debian.org/FreedomBox/Hardware/RockPro64 to flash U-boot to the
> SPI flash.
> 
> If I try booting the debian installer from 
> https://d-i.debian.org/daily-images/arm64/daily/netboot/SD-card-images/, (I
> dot the concatenation as in the README) it works (I continued to
> install Debian on an SSB connected via USB, afterwards, it boots).
> 
> In
> https://builds.trisquel.org/debian-installer-images/debian-installer-images_20210731+deb11u12+11.0trisquel18_arm64.tar.gz, I did the same using similar files found in installer-
> arm64/20210731+deb11u12+11/images/netboot/SD-card-images, after
> "Starting kernel ...", nothing happens any more.
> 
> I attach the boot logs obtained via serial console. I noticed
> differences in addresses at the end, I don't know whether this
> reflects a problem or it is just something normal.
You could try to get more logs in this way:

First locate the address of the __log_buf symbol inside the kernel:
> $ sudo grep __log_buf boot/System.map-5.15.0-130-generic 
> ffffffff8423a770 b __log_buf

In the above it's on x86, so you'd need to do the same with the ARM
Trisquel installation.

Then you need to boot the Trisquel installation, and find the reset
button on your rockpro64. Press the reset button and in u-boot
interrupt the boot with ctrl+c.

Once in u-boot you can try to see the kernel logs with the 'md' u-boot
command: you need to give it the __log_buf address (here maybe it's
0x8423a770 or 0xffffffff8423a770 I'm not sure) and then it will print
the 'dmesg' content.

And you can then press enter multiple times and it will repeat the
last command and this way give you the full log.

The log is then not very convenient to read as you get 8 or 16
characters per line but it's better than nothing at all.

Also note that I also have a rockpro64 but I use it with Guix.

Denis.
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