On 15/08/12 16:13, Jessica Allison wrote: > > >> Date: Wed, 15 Aug 2012 16:06:49 +0100 >> From: marc.zyngier@xxxxxxx >> To: peter.maydell@xxxxxxxxxx >> CC: jessica.allison.2012@xxxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx >> Subject: Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree >> >> On 15/08/12 15:50, Peter Maydell wrote: >>> On 15 August 2012 15:45, Jessica Allison >>> <jessica.allison.2012@xxxxxxxxxxx> wrote: >>>> Yes, when I quickly remove that check in the code, it boots up just fine. >>> >>> Good (although we should probably do a proper fix and make sure >>> we handle 64 bit sizes correctly in the following code). >>> >>>> Is there already a way to boot up a full graphical user environment on the >>>> FastModel simulator with the KVM on ARM kernel? >>>> I use >>>> http://git.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=summary >>>> for my kernel and the system boots fine into a root shell. >>>> Is there a kernel driver for the LCD by now, and included in the device >>>> tree? >>> >>> Graphics via the pl11x should work fine, but I don't think anybody has >>> actually tested because the effect of stacking KVM on top of the Fast >>> Model means it would run pretty slowly. Try getting it running with >>> plain QEMU on x86 first, then the same kernel config should behave >>> the same on KVM. >> >> Only the A9 tile code has some support for its private pl111. The new DT >> code has no knowledge of the VE baseboard pl111. Not to mention the >> HDLCD on TC1/TC2, which doesn't even have a driver. >> >> As mentioned in an email to Jessica a while ago, this bit is waiting for >> a kind soul who'd actually cares about video output to pick it up... > > When my kernel boots with the rtsm_ve-cortex_a15x2.dts device tree I see the following error which, I assume, is related to the pl111 not working? > > clcd-pl11x: probe of 1c1f0000.clcd failed with error -22 That's one of the many problems. I have a really ugly workaround in one of my branches that allows the frame buffer to be used, but that patch will not go anywhere near mainline: http://git.us.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=commitdiff;h=de81b299148b84548fe6c563d8d70dcfddf3145c;hp=edf2c53a89824cb5752d42b89997ae8bc96dcff8 > If I had proper graphics hardware (as opposed to the really slow FastModel simulator), then I would definitely be interested in working on the graphics kernel code. But I don't have that yet... See? Nobody really cares, not even you! ;-) This thing is doomed... M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
