Re: [Qemu-devel] [PATCH] hw/arm/boot: Load the Non Linux initrd to the memory

[gengdongjiu]

On 2019/8/27 17:47, Peter Maydell wrote:
> On Tue, 27 Aug 2019 at 10:42, Dongjiu Geng <address@hidden> wrote:
>>
>> Except support linux operation system, qemu also supports other
>> operation system which is non linux, such as microkernel system.
>>
>> But now Qemu only load linux initrd, so change it to load both
>> linux and Non-linux initrd Image.
> 
> We currently support two methods of booting:
>  (1) using the boot protocol defined by the Linux kernel
>      (which includes how to find the DTB, initrd, what the
>      secondary CPUs do, and so on)
>  (2) you're a 'bare-metal' image, in which case you get
>      complete control of all the CPUs at once in the same
>      way the hardware does. Raw hardware doesn't provide
>      initrd files, and nor does QEMU.
> 
> This patch seems to be trying to introduce a third hybrid
> thing. Is there a specification for whatever this boot
> protocol is? How many guest OSes use it? Are they common?
> 
> If you want an initrd, you can always wrap your guest OS in
> a shim which complies with the Linux kernel boot protocol.
> I think that would be a better approach than this patch.

OK， thanks for the suggestion, I will use your suggested method.

> 
> thanks
> -- PMM
> .
>