Re: Initial Mini-OS port to ARM64

[Julien Grall <julien.grall@linaro.org>]

You forget to reply all.

On 02/24/2014 03:30 PM, karim.allah.ahmed@gmail.com wrote:
> On Sun, Feb 16, 2014 at 8:44 PM, Julien Grall <julien.grall@linaro.org> wrote:
>> 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.
> 
> +1
> 
> I totally agree with Julien.
> 
> I don't know how far are you at the moment, but would it be easy to
> rebase your work on top of mine ( or the other way around ? ).
> Let me know what can I do to sync up with your work
> 
>>
>> If I remember correctly, Karim already wrote a GIC support but without FDT
>> support.
> 
> Yes, that's correct. All addresses ( not just for GIC ) at the moment
> are fixed, so once the memory layout changes everything will crash :)
> 
>>
>>
>>> Besides, there is still lots of work to be done. So any comments
>>> or patches are welcome.
>>
>>
>> Regards,
>>
>> --
>> Julien Grall
> 
> 
> 


-- 
Julien Grall