Re: Fwd: Debian on Linux-SH4

Hi Robert!

On 1/11/22 15:49, Robert Święcki wrote:
> Ha.. I didn't. debian's cross-sh4-gcc (I think I tried versions 11 10
> 8 and 6) doesn't build "working" kernels. Dunno why. It compiles, but
> doesn't boot.
> 
> In the end I had to compile it myself with one of those
> https://toolchains.bootlin.com/releases_sh-sh4.html and use it with
> istaller's initrd.

OK, that is very interesting. We need to figure out what the problem with
Debian's compiler is what causes the kernel to be non-bootable.

I have already had a discussion with QEMU upstream and we hadn't come up
with a solution yet, so your successful boot with QEMU is a very useful
result.

> Fortunately it allowed me to proceed even if the
> *-di* modules couldn't be loaded. The only thing I had to do was to
> trick the installer into thinking that my custom kernel is the same
> kernel version as the *di* version in pool-sh4 via EXTRAVERSION in
> kernel's Makefile, because the "anna" thingy stops the installation
> process w/o it.

Yes, but that's a different problem and doesn't normally happen when using
the standard kernel.

> $ ./sh-sh4--glibc--stable/bin/sh4-linux-gcc --version
> sh4-linux-gcc.br_real (Buildroot 2017.05) 5.4.0
> 
> [    0.000000] Linux version 5.15.0 (jagger@jd)
> (sh4-buildroot-linux-gnu-gcc.br_real (Buildroot 2017.05) 5.4.0, GNU ld
> (GNU Binutils) 2.27) #37 Tue Jan 11 12:58:34 CET 2022

Thanks for the information.

If you can find out anything else on the kernel/GCC issue that would be much
appreciated. I have been quite stuck on this issue in the past although it
works on real hardware.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - [email protected]
`. `'   Freie Universitaet Berlin - [email protected]
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