Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU

[Paolo Bonzini]

On 27/05/2015 13:54, Peter Maydell wrote:
> On 27 May 2015 at 10:30, Paolo Bonzini <address@hidden> wrote:
>> > For example, ARM's "-M virt" uses a pl011 block for the RTC, and also
>> > uses fw_cfg.  Another commonly used ISA device is the UART, for which
>> > again -M virt uses a pl031.
> Partly we do that because there were a number of reports that trying
> to use virtio for the console didn't work reliably... Using the
> stock UART that is widely supported in UEFI/uboot/kernel was a
> conservative design choice.
> 
> The next thing that's likely to appear in "virt" is a PL061
> GPIO device, which you need for CPU hotplug and external-shutdown-request
> notifications.

Indeed, and the x86 Q35 chipset puts the ACPI registers... in the
ISA/LPC bridge. :)

Paolo