Re: On integrating LoongArch EDK2 firmware into QEMU build process

[maobibo]

On 2023/3/31 20:12, Gerd Hoffmann wrote:
> 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?
There is a little different about relocation between gcc-12 and gcc-13 
on LoongArch, gcc-13 is required for edk2 compiler now.

However I think it is actually is one issue if gcc-12 can not be used 
and gcc-12 is popular latest compiler for all architectures. We will 
solve this problem.

Regards
Bibo, Mao


> take care,
>    Gerd