Re: [Qemu-devel] [PATCH 0/4] alpha-softmmu fixes

[Rob Landley]

On 07/10/2013 08:49:35 AM, Richard Henderson wrote:
> On 07/09/2013 10:43 AM, Rob Landley wrote:
> > Do you have a kernel .config that boots on this board? I'd really  
> like to try
> > this out myself...
>
> I haven't worked on this in quite some time.  But I've located two  
> branches
> that look like they might be the code corresponding to my image.  Try
>
>   git://github.com/rth7680/linux.git axp-qemu-{1,2}

Do I just do 'make defconfig'? Or do I need to involve  
arch/alpha/defconfig somehow?

> The -1 branch looks newer, but the -2 branch contains more code  
> specific to
> qemu.  Both are over 2 years old, so I'm not sure what I was going  
> for...

There are now -3 and -4 branches...

Wow, -4 is current with upstream I think? Cool, I'll try that. Still no  
obvious arch/alpha/config, but I'll just try "make defconfig" and hope  
for the best...

> The most important bits are trivial to Kconfig, enabling the pci  
> virtio
> devices, as they don't require a working IOMMU.

Many moons ago (2009?) I built an alpha toolchain, userspace, and  
kernel, but couldn't boot it under qemu because there was no  
qemu-system-alpha.

what I'd like to do is build a 3.10 kernel with:

1) Serial console on qemu's stdin/stdout.
2) Block device driver of some kind (ide, scsi, virtio...)
3) network card
4) at least 256 megs memory
5) battery backed up clock

> The IOMMU was a bit of a pipe dream 2 years ago, and only in the last  
> 3-4
> months has the code enabling that actually gotten merged.  Perhaps  
> I'll find
> some time to actually write the code to emulate that now...
>
> As for configury, choose dp264 or generic.

"clipper" seems to be default, and that's dp264...

Rob