hw/misc/sga.c

   1 /*
   2  * QEMU dummy ISA device for loading sgabios option rom.
   3  *
   4  * Copyright (c) 2011 Glauber Costa, Red Hat Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  *
  24  * sgabios code originally available at code.google.com/p/sgabios
  25  *
  26  */
  27 #include "hw/pci/pci.h"
  28 #include "hw/i386/pc.h"
  29 #include "hw/loader.h"
  30 #include "sysemu/sysemu.h"
  31
  32 #define SGABIOS_FILENAME "sgabios.bin"
  33
  34 #define TYPE_SGA "sga"
  35 #define SGA(obj) OBJECT_CHECK(ISASGAState, (obj), TYPE_SGA)
  36
  37 typedef struct ISASGAState {
  38     ISADevice parent_obj;
  39 } ISASGAState;
  40
  41 static void sga_realizefn(DeviceState *dev, Error **errp)
  42 {
  43     rom_add_vga(SGABIOS_FILENAME);
  44 }
  45
  46 static void sga_class_initfn(ObjectClass *klass, void *data)
  47 {
  48     DeviceClass *dc = DEVICE_CLASS(klass);
  49
  50     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
  51     dc->realize = sga_realizefn;
  52     dc->desc = "Serial Graphics Adapter";
  53 }
  54
  55 static const TypeInfo sga_info = {
  56     .name          = TYPE_SGA,
  57     .parent        = TYPE_ISA_DEVICE,
  58     .instance_size = sizeof(ISASGAState),
  59     .class_init    = sga_class_initfn,
  60 };
  61
  62 static void sga_register_types(void)
  63 {
  64     type_register_static(&sga_info);
  65 }
  66
  67 type_init(sga_register_types)