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Re: [Xen-devel] Initial Mini-OS port to ARM64

On 16/02/14 15:51, Chen Baozi wrote:
Hi all,

Hello Chen,

It is much later than I used to expect. I guess it might be help
to publish my work, though it is still not finished (and might not
be finished very soon...).

I began to try to port mini-os to ARM64 since last summer. Since
the 64-bit guest support is not quite well at that time, this
work had been stopped for a long time until two months ago.

Though it is still at very early stage, it at least can be built,
setup a early page table for booting, parse the DTB passed by the
hypervisor, and be debugged by printk at present. So I put it
on github in case someone might be interested in it. Here is the
url: https://github.com/baozich/minios-arm64

Good job!

Right now, there are some troubles to make GIC work properly,
as I didn’t consider mapping GIC’s interface in address space and
follows x86’s memory layout which make the kernel virtual address
starts at 0x0. I’ll fix it as soon as possible.

I think you should try to sync up with Karim (in CC). He has started to port mini-OS on arm32. Except assembly code (which should be fairly small) everything can be shared between the both architecture.

If I remember correctly, Karim already wrote a GIC support but without FDT support.

Besides, there is still lots of work to be done. So any comments
or patches are welcome.


Julien Grall

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