Re: [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image

[Alexander Graf]

On 04.04.2013, at 11:46, Artyom Tarasenko wrote:

> On Thu, Apr 4, 2013 at 10:37 AM, Fabien Chouteau <address@hidden> wrote:
>> 
>> On 04/03/2013 06:59 PM, Alexander Graf wrote:
>>> 
>>> On 03.04.2013, at 18:40, Fabien Chouteau wrote:
>>> 
>>>> If we use an ELF kernel there's no need for bios. '-bios -' means no
>>>> bios.
>>> 
>>> This sounds like you're actually looking for a way to load an ELF blob
>>> as bios using -bios, not a kernel, no?
>>> 
>> 
>> No, we load the kernel with -kernel, that's what the first patch does.
>> But the board is implemented in such way that you can't start without a
>> bios. If the -bios switch is not present, then the board uses the
>> default bios. This patch allows to start without a bios:
>> 
>> -kernel <PROGRAM> -bios -
> 
> Regardless of the firmware vs. kernel discussion, I think the syntax
> may be improved. Under *nix '-' is commonly used for stdin. Would it
> be possible to specify /dev/null (under *NIX) or NUL (in the
> MS-World)? I think it would make the syntax more explicit.

I'd be inclined to say that running -kernel without -bios is simply bogus and 
shouldn't ever happen.


Alex