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Re: Xen 4.14.1 on RPI4: device tree generation failed

On Sun, Jan 31, 2021 at 6:33 PM Elliott Mitchell <ehem+undef@xxxxxxx> wrote:
> On Sun, Jan 31, 2021 at 02:06:17PM -0500, Tamas K Lengyel wrote:
> > (XEN) Unable to retrieve address 0 for /scb/pcie@7d500000/pci@1,0/usb@1,0
> > (XEN) Device tree generation failed (-22).
> > Does anyone have an idea what might be going wrong here? I tried
> > building the dtb without using the dtb overlay but it didn't seem to
> > do anything.
> If you go to line 1412 of the file xen/arch/arm/domain_build.c and
> replace the "return res;" with "continue;" that will bypass the issue.
> The 3 people I'm copying on this message though may wish to ask questions
> about the state of your build tree.

I'll try that but it's a pretty hacky work-around ;)

> Presently the rpixen script is grabbing the RPF's 4.19 branch, dates
> point to that last being touched last year.  Their tree is at
> cc39f1c9f82f6fe5a437836811d906c709e0661c.

I've moved the Linux branch up to 5.10 because there had been a fair
amount of work that went into fixing Xen on RPI4, which got merged
into 5.9 and I would like to be able to build upstream everything
without the custom patches coming with the rpixen script repo.




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