On Sunday, 2 August, 2020 7:57:03 PM IST Oscar Carter wrote: > Hi, > > I'm working in a new feature for the powerpc (64 bits little endian) > architecture. Since I can't test it in a real environment, I need to > emulate this arch. To do this I use qemu-ppc. My problem is that the > built kernel don't boot in qemu. > > To build the kernel: > > make defconfig ARCH=powerpc > > Then I set to NO the CONFIG_KEXEC option as I found that qemu can't > boot a KEXEC kernel. And now: > > make ARCH=powerpc CROSS_COMPILE=powerpc-linux-gnu- -j4 > > Finally I obtain a zImage in arch/powerpc/boot/ directory. > > Before to run qemu I create a rootfs with debootstrap. Then I run qemu > with the following parameters: > > qemu-system-ppc -kernel /media/ubuntu/Data/linux/arch/powerpc/boot/zImage \ > -append "root=/dev/sda console=ttyS0" \ > -drive file=qemu_image.img,index=0,media=disk,format=raw \ > --nographic > > If I add the "-prom-env boot-args=-v" to the end of the last command I get > > the same result. The qemu always stops at this point: > >> ============================================================= > >> OpenBIOS 1.1 [Dec 27 2018 23:11] > >> Configuration device id QEMU version 1 machine id 2 > >> CPUs: 1 > >> Memory: 128M > >> UUID: 00000000-0000-0000-0000-000000000000 > >> CPU type PowerPC,750 > > milliseconds isn't unique. > Welcome to OpenBIOS v1.1 built on Dec 27 2018 23:11 > > >> [ppc] Kernel already loaded (0x01000000 + 0x009085d8) (initrd 0x00000000 > >> + 0x00000000) [ppc] Kernel command line: root=/dev/sda console=ttyS0 > > >> switching to new context: > Also, I've tried to build the kernel with a DTB embedded in the image, > but not luck. The same result again. > > make ps3_defconfig ARCH=powerpc > make ARCH=powerpc simpleImage.ps3 CROSS_COMPILE=powerpc-linux-gnu- -j4 > > I'm stuck at this point. I don't know how to configure the kernel to be > able to boot with qemu. Any help to point me to the right direction > will be greatly appreciated. I used `pseries_defconfig` and have also used `pseries_le_defconfig` and have done successful boots. You should probably give the machine type in your qemu command line. `-M pseries` or whatever is the machine type is for ps3 Thanks, Santosh > > Thank's in advance. > Oscar Carter > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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