Re: QEMU boot kernel for ppc e300c3 problem

[Thomas Huth]

On 06/09/2021 09.40, Ali Vatankhah wrote:
> Thank you Thomas for your reply.
>  > You definitly need to select the right CPU type, too. So for your case,
>  > you'd need to add the "-cpu e300c3" command line switch
>   Also added this option but nothing changed and the command does not print 
> anything.
>  > But the CPU is only a part of the hardware, you also need to select a
>  > supported board with the "-M" command line parameter
>   How can I add a machine to Qemu for this CPU? I have a real MPC8308 board 
> and am really interested in contributing to Qemu.
> and another question, is it required to specify a machine type? I built a 
> kernel for Powerpc g4 (7400) with the same Yocto (standard qemuppc machine) 
> and Qemu runs the kernel without specifying cpu or machine, although Qemu 
> supports PowerPC 7400 (g4) and a machine that uses this CPU (mac99):
> qemu-system-ppc -kernel vmlinux -nographic

If you don't specify a machine type, QEMU uses a default machine. Run with 
"-M help" and look for the word "default" in the output. For 
qemu-system-ppc, it's the g3beige machine, which is likely compatible enough 
with the kernel that you've built.

 Thomas