Re: [Xen-users] Xen on Raspberry Pi

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Hi Iain,

Also see "Booting Xen under EFI platform" in the following doc on how to
boot Xen directly from UEFI:

https://wiki.xenproject.org/wiki/Xen_EFI

This is a concrete tutorial for qemu-system-aarch64; it has a few QEMU
specific things in there, but it should give you a good overview on how
to setup UEFI boot with Xen on ARM:

https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions/qemu-system-aarch64

Cheers,

Stefano


On Fri, 8 Jun 2018, Iain Hunter wrote:
> Hi Andre,
> 
> Thanks for the tips. I will let you know the results.
> 
> Iain
> 
>  
> 
> Sent from Mail for Windows 10
> 
>  
> 
> From: Andre Przywara
> Sent: 08 June 2018 14:51
> To: Julien Grall; Iain Hunter; xen-users@xxxxxxxxxxxxxxxxxxxx; Stefano 
> Stabellini
> Subject: Re: [Xen-users] Xen on Raspberry Pi
> 
>  
> 
> Hi,
> 
>  
> 
> On 08/06/18 14:21, Julien Grall wrote:
> 
> > Hi,
> 
> >
> 
> > I am CCing Andre and Stefano. They might be able to help boot Xen on the
> 
> > Orange Pi PC2.
> 
> >
> 
> > Cheers,
> 
> >
> 
> > On 08/06/18 14:04, Iain Hunter wrote:
> 
> >> Hi Julien,
> 
> >> 
> 
> >> I actually need 64 bit kernel on A53. I tried Orange Pi PC2 but found
> 
> >> a K4.14 u-boot and Linux painful with a lack of documentation and
> 
> >> forum activity to search . Raspberry Pi gave me the documentation to
> 
> >> get it up and running natively.
> 
>  
> 
> Mainline Linux 4.14 supports Allwinner A64/H5 quite well, but 4.15 is
> 
> even better, since it adds Ethernet support.
> 
> You can avoid most of the fiddling by using a generic, prebaked firmware
> 
> image: https://github.com/apritzel/pine64/tree/master/images
> 
> This boots UEFI apps or arm64 kernels, from USB drives, MMC or from PXE.
> 
> If you play with your own kernel, defconfig should have everything you
> 
> need. Also newer distribution kernels, for instance the one from Ubuntu
> 
> 18.04, should work.
> 
> Distribution installers based on grub work with that image.
> 
> Unfortunately many *installers* lacks some modules for USB and SD, so
> 
> you can't directly install it (yet), but if you use an existing rootfs,
> 
> it should work (you might need to create a suitable initrd first, though).
> 
> Once you have Linux booting, using Xen shouldn't be much of an issue.
> 
> See
> 
> https://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/Allwinner
> 
> for the magic U-Boot bits.
> 
>  
> 
> HTH,
> 
>  
> 
> Cheers,
> 
> Andre.
> 
>  
> 
> >> 
> 
> >> So, I’ll go back to the Orange Pi.
> 
> >> 
> 
> >> Thanks for the advice,
> 
> >> 
> 
> >> Iain
> 
> >> 
> 
> >> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> 
> >> Windows 10
> 
> >> 
> 
> >> *From: *Julien Grall <mailto:julien.grall@xxxxxxx>
> 
> >> *Sent: *08 June 2018 13:49
> 
> >> *To: *Iain Hunter <mailto:drhunter95@xxxxxxxxx>;
> 
> >> xen-users@xxxxxxxxxxxxxxxxxxxx <mailto:xen-users@xxxxxxxxxxxxxxxxxxxx>
> 
> >> *Subject: *Re: [Xen-users] Xen on Raspberry Pi
> 
> >> 
> 
> >> On 08/06/18 13:16, Iain Hunter wrote:
> 
> >> 
> 
> >>  > Hi,
> 
> >> 
> 
> >> Hello,
> 
> >> 
> 
> >>  > Could someone confirm that there is no support for raspberry pi in
> 
> >> Xen?
> 
> >> 
> 
> >>  > I found a mail from Ian Campbell that original Pi used a custom
> 
> >> 
> 
> >>  > interrupt handler on the Broadcom device that did not match Xen
> 
> >> 
> 
> >>  > implementation. Is this still the case for Pi3 and its A53s?
> 
> >> 
> 
> >> Yes. The RPI 3 is still using the Broadcom interrupt controller. It does
> 
> >> 
> 
> >> not have virtualization extension provided and not based on the GIC
> 
> >> 
> 
> >> specification.
> 
> >> 
> 
> >> Do you have any requirement to use RPI? If not, I would recommend
> 
> >> 
> 
> >> platform such as Pine64, they are cheap and have similar spec as the Pi3.
> 
> >> 
> 
> >> Cheers,
> 
> >> 
> 
> >> -- 
> 
> >> 
> 
> >> Julien Grall
> 
> >> 
> 
> >
> 
>  
> 
> 
>

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