----- Original Message ----- > On 11/19/2014 03:47 PM, Paul Whalen wrote: > > > > > > ----- Original Message ----- > >> On 11/19/2014 10:23 AM, Peter Robinson wrote: > >>>>>>> Just trying the F21 beta (and > >>>>>>> Fedora-Minimal-armhfp-21-20141117-sda.raw) > >>>>>>> under > >>>>>>> qemu. Seems like these versions both require explicitly passing in a > >>>>>>> dtb > >>>>>>> to > >>>>>>> qemu to actually boot. Well, maybe it's booting and I'm just not > >>>>>>> getting > >>>>>>> any > >>>>>>> serial output, can't really tell. > >>>>>>> > >>>>>>> Passing a dtb to qemu wasn't required for the F20 GA release at > >>>>>>> least, > >>>>>>> and > >>>>>>> still isn't required with F21 qemu-system-arm, so presumably it's not > >>>>>>> a > >>>>>>> qemu > >>>>>>> regression. > >>>>> > >>>>> > >>>>> Fedora 21 requires the use of a dtb to boot the multiplatform kernel. > >>>>> This > >>>>> changed > >>>>> around the 3.16 RC's (iirc). > >>>>> > >>>>>>> > >>>>>>> Having to pass a dtb is kind of a pain for management tools, it's > >>>>>>> another > >>>>>>> file > >>>>>>> that needs to handled. And the docs say it shouldn't be required: > >>>>>>> > >>>>>>> https://fedoraproject.org/wiki/Architectures/ARM/F21/Installation#For_Versatile_Express_Emulation_with_QEMU > >>>>> > >>>>> > >>>>> Thanks, I will adjust the page. > >>>>> > >>>> > >>>> Medium/long term we should consider changing the docs to recommend using > >>>> qemu-system-arm -M virt, since that's where all the virt improvements > >>>> are > >>>> generally going to take place, and it doesn't require an explicit dtb > >>>> (since > >>>> it generates ones behind the scene). That will also be the virt machine > >>>> type > >>>> used for aarch64, so it will be nice to have parity there. > > > > What command should be used? When I add in -M virt and do not include a > > dtb, I > > dont get any output on the serial console (a9, a15) using > > qemu-system-arm-2.1.2-6.fc21.x86_64. > > > > I did this with virt-install: > > sudo virt-install --name f21-arm-machvirt --ram 1024 --arch armv7l --disk > Fedora-Minimal-armhfp-21-20141117-sda.raw --import --boot > kernel=vmlinuz-3.17.2-300.fc21.armv7hl,initrd=initramfs-3.17.2-300.fc21.armv7hl.img,kernel_args="console=ttyAMA0 > rw root=/dev/vda3 rootwait" > > But looking at the libvirt generated qemu command line is probably more > confusing than enlightening. What command line did you use? Maybe I can spot > the problem >From our wiki (only added -M virt): sudo qemu-system-arm -M virt -cpu cortex-a15 -m 1024 -nographic -net nic -net user \ -append "console=ttyAMA0,115200n8 rw root=/dev/mmcblk0p3 rootwait physmap.enabled=0" \ -kernel $KERN \ -initrd $INTRD \ -sd Fedora-$TYPE-armhfp-21_Beta-4-sda.raw Gives serial output, but the machine type is listed as: Machine model: linux,dummy-virt , system doesnt find the rootfs. > > - Cole > _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
