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Date: Sat, 14 Jan 2017 14:11:50 +0100
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Subject: Re: [Qemu-devel] [PATCH 0/6] ppc: add a IBM 40p machine (RS/6000,
 PReP)
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To: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Giancarlo Teodori <gteodori@gmail.com>, Thomas Huth <thuth@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, qemu-ppc@nongnu.org, David Gibson <david@gibson.dropbear.id.au>

Le 13/01/2017 =C3=A0 13:23, Mark Cave-Ayland a =C3=A9crit :
>>
>> OpenBIOS doesn't support PReP boot partitions (type 0x41) nor PReP
>> kernels so this is a no-go yet.
>
> Just out of interest, is it just the PReP boot partition support that i=
s
> missing from OpenBIOS? If so, that should be fairly easy to implement i=
f
> there's a spec lying around somewhere.

2 things are missing to boot from hard disk/cdrom:
- support for LSI SCSI adapter
- support for PReP boot partition support

However, if you want to boot with -kernel, you only need to have support =
for PReP boot partition.
Partial specification is available at:
ftp://ftp.software.ibm.com/rs6000/technology/spec/srp1_1.exe
section 5.3 (Loading the Load Image)
and
section 5.4 (Transferring System Control to Load Image)


> It would be great if we could finally remove OHW from QEMU :)

I fully agree on that!

Herv=C3=A9