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Re: [Qemu-devel] [PATCH v2 7/9] hw/vexpress.c: Instantiate the motherboa
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH v2 7/9] hw/vexpress.c: Instantiate the motherboard CLCD |
Date: |
Wed, 25 Jan 2012 19:28:36 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111220 Thunderbird/9.0 |
Am 24.01.2012 13:39, schrieb Peter Maydell:
> Instantiate the CLCD on the vexpress motherboard as well as one on
> the daughterboard -- the A15 daughterboard does not have a CLCD
> and so relies on the motherboard one.
>
> At the moment QEMU doesn't provide infrastructure for selecting
> which display device gets to actually show graphics -- the first
> one registered is it. Fortunately this works for the major use
> case (Linux): if the daughterboard has a CLCD it will come first
> and be used, otherwise we fall back to the motherboard CLCD.
> So we don't (currently) need to implement the control register
> which allows software to tell the mux which video output to pass
> through to the outside world.
>
> Signed-off-by: Peter Maydell <address@hidden>
Reviewed-by: Andreas Färber <address@hidden>
I do hope we find a solution to deal with n displays in the future. I
consider that a post-QOM topic and maybe Anthony's planned DisplayState
refactoring helps with that.
The Origen Board has (provisions for) an LCD in addition to HDMI output,
for instance.
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
- [Qemu-devel] [PATCH v2 0/9] Add support for Cortex-A15 and vexpress-a15, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 7/9] hw/vexpress.c: Instantiate the motherboard CLCD, Peter Maydell, 2012/01/24
- Re: [Qemu-devel] [PATCH v2 7/9] hw/vexpress.c: Instantiate the motherboard CLCD,
Andreas Färber <=
- [Qemu-devel] [PATCH v2 3/9] hw/a15mpcore.c: Add Cortex-A15 private peripheral model, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 9/9] hw/vexpress.c: Add vexpress-a15 machine, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 4/9] hw/vexpress.c: Make motherboard peripheral memory map table-driven, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 5/9] hw/vexpress.c: Move secondary CPU boot code to SRAM, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 2/9] Add Cortex-A15 CPU definition, Peter Maydell, 2012/01/24
- [Qemu-devel] [PATCH v2 1/9] Add dummy implementation of generic timer cp15 registers, Peter Maydell, 2012/01/24