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Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios i
From: |
Alexander Graf |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image |
Date: |
Sat, 6 Apr 2013 22:12:49 +0200 |
On 06.04.2013, at 22:07, Edgar E. Iglesias wrote:
> On Sat, Apr 06, 2013 at 01:38:52PM +0200, Alexander Graf wrote:
>>
>> On 06.04.2013, at 13:27, Peter Maydell wrote:
>>
>>> On 6 April 2013 10:07, Alexander Graf <address@hidden> wrote:
>>>> On ARM, look at highbank. Because we're not running we're lacking
>>>> a monitor mode blob that provides sys calls for flushing caches.
>>>> Thus today the highbank machine doesn't boot anymore with Linux.
>>>> If we ran firmware like the real board, that would provide for the
>>>> sys call.
>>>
>>> We also flat out don't implement enough monitor mode to allow
>>> a hypothetical firmware blob to work.
>>
>> Why don't we implement enough monitor mode? Because we're not running
>> firmware :). It's a chicken and egg thing. Bottom line is that Linux validly
>> expects that firmware exists. If we don't run firmware, we diverge, thus we
>> potentially break.
>
>
> Hi guys, A question - For linux kernels that depend on preivous stages to
> setup
> HW state. What is the prefered way to handle it?
>
> In particular, if the boot loader chain depends on for example a boot rom
> that is not Open Source. Is providing a QEMU specific loader in pc-bios/ a
> good
> option?
That's pretty much what we do for all PPC machines that do execute firmware,
yes :). Just make sure to license your own firmware code under an open source
license.
Alex
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, (continued)
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Andreas Färber, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Scott Wood, 2013/04/05
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Scott Wood, 2013/04/08
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Edgar E. Iglesias, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image,
Alexander Graf <=
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Edgar E. Iglesias, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Fabien Chouteau, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Artyom Tarasenko, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04