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Re: [Qemu-ppc] [Qemu-devel] [PATCH 2/2] m48t59: add mem_base value to m4

From: Peter Maydell
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH 2/2] m48t59: add mem_base value to m48t59_init_isa()
Date: Mon, 19 Jan 2015 16:50:50 +0000

On 19 January 2015 at 16:48, Mark Cave-Ayland
<address@hidden> wrote:
> I'm not sure this would work for SPARC64 since potentially OpenBIOS can
> program the I/O BAR for the ebus anywhere (and the NVRAM is located on
> the ebus). At the moment we cheat by creating an alias to I/O space at
> the top of memory so that OpenBIOS can always access it at a fixed address.

The MemoryRegion APIs should provide enough flexibility that you
can make QEMU do whatever the hardware does here (whether that is
"builtin devices higher priority than PCI window" or vice versa).
All you have to do is figure out what that actually is...

-- PMM

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