On 04/09/2021 12.59, Ali Vatankhah wrote:
I am new to QEMU. I built a Linux kernel 4.14 and rootfs for MPC8308 (this
CPU has e300c3 ppc core with Yocto (thud version) and it works on real
hardware well.
When I run this command to run kernel with QEMU:
qemu-system-ppc -kernel vmlinux.bin -nographic
it prints this output and hangs up with 100% CPU usage on one CPU core:
>> =============================================================
>> OpenBIOS 1.1 [Mar 16 2021 08:16]
>> Configuration device id QEMU version 1 machine id 2
>> CPUs: 1
>> Memory: 128M
>> UUID: 00000000-0000-0000-0000-000000000000
>> CPU type PowerPC,750
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. See "-cpu help" for
a complete list.
But the CPU is only a part of the hardware, you also need to select a
supported board with the "-M" command line parameter. See "-M help" for a
list. I don't think that QEMU supports any machine that features the e300
CPU, so your case likely does not work. You could try "-M ppce500", maybe
you're lucky and that works, too, but I guess it will rather crash instead.
Thomas
