On Mon, Aug 10, 2020 at 3:15 AM Santosh S <santosh@xxxxxxxxxx> wrote: > > 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: > > I would recommend you try virtme, particularly virtme-config-kernel [jimc@frodo build-v1]$ virtme-configkernel --help usage: virtme-configkernel [-h] [--arch ARCHITECTURE] [--allnoconfig | --defconfig | --update] Configure a kernel for virtme optional arguments: -h, --help show this help message and exit --arch ARCHITECTURE Target architecture Mode: --allnoconfig Overwrite configuration with a virtme-suitable allnoconfig (unlikely to work) --defconfig Overwrite configuration with a virtme-suitable defconfig --update Update existing config for virtme > > 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 > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
