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a90d469007
This patch adds a dummy legacy ISA device whose responsibility is to deploy sgabios, an option rom for a serial graphics adapter. The proposal is that this device is always-on when -nographics, but can otherwise be enable in any setup when -device sga is used. [v2: suggestions on qdev by Markus ] [v3: cleanups and documentation, per list suggestions ] Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
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* QEMU dummy ISA device for loading sgabios option rom.
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*
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* Copyright (c) 2011 Glauber Costa, Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* sgabios code originally available at code.google.com/p/sgabios
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*
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*/
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#include "pci.h"
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#include "pc.h"
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#include "loader.h"
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#include "sysemu.h"
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#define SGABIOS_FILENAME "sgabios.bin"
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typedef struct ISAGAState {
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ISADevice dev;
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} ISASGAState;
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static int isa_cirrus_vga_initfn(ISADevice *dev)
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{
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rom_add_vga(SGABIOS_FILENAME);
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return 0;
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}
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static ISADeviceInfo sga_info = {
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.qdev.name = "sga",
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.qdev.desc = "Serial Graphics Adapter",
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.qdev.size = sizeof(ISASGAState),
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.init = isa_cirrus_vga_initfn,
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};
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static void sga_register(void)
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{
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isa_qdev_register(&sga_info);
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}
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device_init(sga_register);
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