Re: On integrating LoongArch EDK2 firmware into QEMU build process

[gaosong]

在 2023/3/31 下午8:12, Gerd Hoffmann 写道:
> On Fri, Mar 31, 2023 at 08:54:16AM +0800, maobibo wrote:
> > Xuerui,
> >
> > Thanks for your mail, it is a good suggestion. Now we are planing to
> > move LoongArch uefi bios from edk2-platform to edk2 repo, so that uefi
> > bios supporting LoongArch can be auto compiled and uploaded to qemu
> > repo. Only that process is somwhat slow since lacking of hands,
> > however we are doing this.
> Good, so I think it makes sense for qemu to just wait for that to
> happen.
>
> Related question:  What are the requirements to build the firmware?
> Fedora 38 ships cross compiler packages ...
>
>    binutils-loongarch64-linux-gnu-2.39-3.fc38.x86_64
>    gcc-loongarch64-linux-gnu-12.2.1-5.fc38.x86_64
>
> ... but when trying to use them to compile the loongarch firmware gcc
> throws errors:
>
> loongarch64-linux-gnu-gcc: error: unrecognized command-line option 
> ‘-mno-explicit-relocs’
>
> I suspect gcc-12 is just too old?
Yes.

[gaosong@kvm-dev1 BIOS]$ loongarch64-unknown-linux-gnu-gcc --version
loongarch64-unknown-linux-gnu-gcc (GCC) 13.0.0 20220906 (experimental)

See:
https://github.com/tianocore/edk2-platforms/tree/master/Platform/Loongson/LoongArchQemuPkg#readme
or
docs/system/loongarch/virt.rst

Thanks.
Song Gao