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Re: [Qemu-ppc] [Qemu-devel] [PATCH 0/6] ppc: add a IBM 40p machine (RS/6

From: Hervé Poussineau
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH 0/6] ppc: add a IBM 40p machine (RS/6000, PReP)
Date: Sat, 14 Jan 2017 14:11:50 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.5.1

Le 13/01/2017 à 13:23, Mark Cave-Ayland a écrit :

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 is
missing from OpenBIOS? If so, that should be fairly easy to implement if
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:
section 5.3 (Loading the Load Image)
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!


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