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From: Fabien Chouteau <chouteau@adacore.com>
To: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org,
	"Andreas Färber" <afaerber@suse.de>
Subject: Re: [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image
Date: Thu, 04 Apr 2013 10:37:50 +0200	[thread overview]
Message-ID: <515D3BDE.20400@adacore.com> (raw)
In-Reply-To: <7C0E04C3-1FDF-460E-8F78-1E24E5759C93@suse.de>


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 -

> The preferred way to load a kernel with -kernel is to load firmware
> which then detects that a kernel was loaded with -kernel and jumps in.
> Once Andreas moves PReP to OpenBIOS, this will be the normal mode of
> operation there too.
>

I'll have a look at Andreas' branch and see if it fits our scheme.

Thanks,

-- 
Fabien Chouteau

  reply	other threads:[~2013-04-04  8:38 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-03 16:40 [Qemu-devel] [PATCH 0/3] PPC PReP: Use ElF kernel on PReP Fabien Chouteau
2013-04-03 16:40 ` [Qemu-devel] [PATCH 1/3] PPC PReP: Load ELF kernel Fabien Chouteau
2013-04-03 16:40 ` [Qemu-devel] [PATCH 2/3] PPC PReP: Use kernel entry to set nip at reset Fabien Chouteau
2013-04-03 16:40 ` [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image Fabien Chouteau
2013-04-03 16:59   ` Alexander Graf
2013-04-04  8:37     ` Fabien Chouteau [this message]
2013-04-04  9:26       ` Alexander Graf
2013-04-04 16:19         ` Fabien Chouteau
2013-04-04  9:46       ` Artyom Tarasenko
2013-04-04  9:50         ` Alexander Graf
2013-04-04  9:57           ` Artyom Tarasenko
2013-04-04 11:53             ` Andreas Färber
2013-04-04 11:59               ` Alexander Graf
2013-04-05 23:00                 ` Scott Wood
2013-04-06  9:01                   ` Alexander Graf
2013-04-08 17:52                     ` Scott Wood
2013-07-04  8:35                       ` Julio Guerra
2013-07-10  9:16                         ` Julio Guerra
2013-04-06  9:07                   ` Alexander Graf
2013-04-06 11:27                     ` Peter Maydell
2013-04-06 11:38                       ` Alexander Graf
2013-04-06 13:08                         ` Peter Maydell
2013-04-06 20:07                         ` [Qemu-devel] [Qemu-ppc] " Edgar E. Iglesias
2013-04-06 20:12                           ` Alexander Graf
2013-04-07  0:52                             ` Edgar E. Iglesias
2013-04-04 12:43               ` [Qemu-devel] " Peter Maydell
2013-04-04 16:17                 ` Fabien Chouteau
2013-04-04 16:20                   ` Peter Maydell
2013-04-04 16:26                     ` Artyom Tarasenko
2013-04-04 16:30                       ` Peter Maydell
2013-04-04 16:34                         ` Alexander Graf
2013-04-04 16:41                           ` Peter Maydell
2013-04-04 16:51                             ` Alexander Graf
2013-04-04 16:52                               ` Peter Maydell
2013-04-04 22:32                                 ` Alexander Graf
2013-04-04 22:35                                   ` Peter Maydell
2013-04-04 16:46                         ` Artyom Tarasenko
2013-04-04 16:51                           ` Peter Maydell
2013-04-04 17:08                             ` Artyom Tarasenko
2013-04-04 17:22                       ` Andreas Färber
2013-04-05  9:19                         ` Fabien Chouteau
2013-04-05  9:30                           ` Peter Maydell
2013-04-04 17:05                   ` Andreas Färber
2013-04-05  2:32             ` Rob Landley
2013-04-04 11:16       ` Andreas Färber
2013-04-04 16:18         ` Fabien Chouteau
2013-04-03 16:47 ` [Qemu-devel] [PATCH 0/3] PPC PReP: Use ElF kernel on PReP Alexander Graf
2013-04-03 17:32   ` Andreas Färber
2013-04-04  8:17     ` Fabien Chouteau

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