Re: [Qemu-devel] [PATCH] PPC: Support flags -boot, -uuid and -kernel using fw_cfg

["Blue Swirl" <blauwirbel@gmail.com>]

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On 12/21/08, Laurent Vivier <Laurent@lvivier.info> wrote:
>
>  Le 21 déc. 08 à 20:46, Blue Swirl a écrit :
>
>
> >
> > Hi,
> >
> > These two patches (Qemu/OpenBIOS) add support for giving OpenBIOS/PPC
> > a boot device with -boot command line flag, use a UUID (print only)
> > and call a preloaded kernel. These are passed from Qemu to OpenBIOS
> > using the firmware configuration device and NVRAM.
> >
> > Using the -boot switch works, but I can't boot anything yet so it's
> > not very well tested. UUID works, but it's not added to the device
> > tree. Kernel crashes after the first instruction, maybe the memory
> > size probe corrupts memory.
> >
> >
> > >
> > > >
> =============================================================
> > > > OpenBIOS 1.0RC1 [Dec 21 2008 11:55]
> > > > Configuration device id QEMU version 1 machine id 2
> > > > CPUs: 1
> > > > UUID: 12345678-1234-abcd-7654-123456789abc
> > > > Initializing PCI devices...
> > > > 0:0.0 - 1057:2 - /pci/pci - pci
> > > > 0:1.0 - 1234:1111 - /pci/QEMU,VGA - QEMU,VGA
> > > > 0:2.0 - 10ec:8029 - /pci/NE2000 - NE2000
> > > > 0:3.0 - 1095:646 - /pci/pci-ata - pci-ata
> > > > ata-1: [io ports 0x100-0x107,0x182]
> > > >   drive1 [ATAPI cdrom]: QEMU DVD-ROM
> > > > ata-2: [io ports 0x200-0x207,0x282]
> > > > 0:4.0 - 106b:17 - /pci/mac-io - mac-io
> > > >
> > >
> > No disk found.
> >
> > >
> > > > [ppc] Kernel already loaded (0x01000000 + 0x003cadc8)
> > > >
> > >
> > <q_ppc_use_fw_cfg.diff><o_ppc_use_fw_cfg.diff>
> >
>
>  The ISA IO base depends on the architecture, so I don't think you can use
> I/O port to read the architecture from the fw cfg device.

This version uses MMIO so we can check the architecture early.

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