----- Original Message ----- > On 11/19/2014 09:44 AM, Paul Whalen wrote: > > > > Hi Cole, > > > > ----- Original Message ----- > >> On 11/18/2014 04:33 PM, Cole Robinson wrote: > >>> Hey all, > >>> > >>> 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. I discovered this yesterday when booting our F21 Beta for aarch64 with qemu-system-aarch64, it works great *only* when no dtb was used. Passing a dtb gave me no output at all. I'll test out that change today and update the wiki, if you see any other optimization's, please feel free to let us know, or edit away :) Many thanks, Paul > > - Cole > > _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
