Hello Peter, On Sun, Oct 9, 2011 at 12:48 PM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 9 October 2011 09:28, Francis Moreau <francis.m...@gmail.com> wrote: >> I'm trying to use qemu to emulate the ARM realview-pb-a8 and more >> specifically I'd like to boot using the SD interface. >> >> However it looks like some devices are not emulated at all on this >> platform. > > Correct; not all devices are emulated. >
May I suggest to report that a platform is partially supported when doing "qemu -M ?" >> The "mmci" host driver needs some gpio in order to work. >> >> Is that correct that with qemu 0.14.1, I can't use the SD card interface ? > > You need a newer QEMU. The GPIO modules and the wiring for > the MMC card status outputs should be present in QEMU 0.15. > 0.14.1 has a number of known ARM bugs (especially in Neon > and VFP emulation) and I do not recommend it for ARM targets. Yes that what I saw when trying the tip of qemu git repo. However, those are still missing: amba_device_register failed to register dev:smc amba_device_register failed to register dev:sctl amba_device_register failed to register dev:wdog amba_device_register failed to register dev:sci0 amba_device_register failed to register dev:ssp0 amba_device_register failed to register fpga:aaci In your opinion, which plateform should I use to get a fully supported platform based on ARMv7 cpu ? > NB: when booting off SD card make sure you use > "-drive if=sd,cache=writeback,file=your-sd.img", otherwise you > will get the writethrough cache and really poor I/O performance. > [the slight catch is that if your *host* system crashes you > may get disk corruption, but typically for ARM emulation use > cases that is acceptable.] Thanks for the tip but why not making writeback the defaut ? -- Francis
