On 04/04/2013 04:57:32 AM, Artyom Tarasenko wrote:
On Thu, Apr 4, 2013 at 11:50 AM, Alexander Graf <ag...@suse.de> wrote:
>
> On 04.04.2013, at 11:46, Artyom Tarasenko wrote:
>
>> On Thu, Apr 4, 2013 at 10:37 AM, Fabien Chouteau
<chout...@adacore.com> 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.
QEMU does it at least in one other architectures though:
leon3_generic.
sh4 runs without bios, arm versatile runs without bios, mips runs
without bios...
http://landley.net/aboriginal/bin/system-image-armv5l.tar.bz2 (or
system-image-sh4.tar.bz2 or system-image-mips.tar.bz2) and
./run-emulator.sh in that. Boots to a shell prompt, no bios.
Rob
