mirror of
https://github.com/qemu/qemu.git
synced 2025-08-10 21:34:57 +00:00
d5fcf0d960
ramfb is a sysbus device so it can only used for machine types where it is explicitly enabled: # git grep machine_class_allow_dynamic_sysbus_dev.*TYPE_RAMFB_DEVICE hw/arm/virt.c: machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); hw/i386/microvm.c: machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); hw/i386/pc_piix.c: machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); hw/i386/pc_q35.c: machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); hw/loongarch/virt.c: machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); hw/riscv/virt.c: machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); So these six are the only machine types we have to worry about. The three x86 machine types (pc, q35, microvm) will actually use the rom (when booting with seabios). For arm/riscv/loongarch virt we want to disable the rom. This patch sets ramfb romfile option to false by default, except for x86 machines types (pc, q35, microvm) which need the rom file when booting with seabios and machine types <= 10.0 (handling the case of arm virt, for compat reasons). At the same time, set the "use-legacy-x86-rom" property to true on those historical versioned machine types in order to avoid the memory layout being changed. Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Shaoqin Huang <shahuang@redhat.com> Message-ID: <20250717100941.2230408-4-shahuang@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
#include "qemu/osdep.h"
|
|
#include "migration/vmstate.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/module.h"
|
|
#include "hw/loader.h"
|
|
#include "hw/qdev-properties.h"
|
|
#include "hw/display/ramfb.h"
|
|
#include "ui/console.h"
|
|
#include "qom/object.h"
|
|
|
|
typedef struct RAMFBStandaloneState RAMFBStandaloneState;
|
|
DECLARE_INSTANCE_CHECKER(RAMFBStandaloneState, RAMFB,
|
|
TYPE_RAMFB_DEVICE)
|
|
|
|
struct RAMFBStandaloneState {
|
|
SysBusDevice parent_obj;
|
|
QemuConsole *con;
|
|
RAMFBState *state;
|
|
bool migrate;
|
|
bool use_legacy_x86_rom;
|
|
};
|
|
|
|
static void display_update_wrapper(void *dev)
|
|
{
|
|
RAMFBStandaloneState *ramfb = RAMFB(dev);
|
|
|
|
if (0 /* native driver active */) {
|
|
/* non-standalone device would run native display update here */;
|
|
} else {
|
|
ramfb_display_update(ramfb->con, ramfb->state);
|
|
}
|
|
}
|
|
|
|
static const GraphicHwOps wrapper_ops = {
|
|
.gfx_update = display_update_wrapper,
|
|
};
|
|
|
|
static void ramfb_realizefn(DeviceState *dev, Error **errp)
|
|
{
|
|
RAMFBStandaloneState *ramfb = RAMFB(dev);
|
|
|
|
ramfb->con = graphic_console_init(dev, 0, &wrapper_ops, dev);
|
|
ramfb->state = ramfb_setup(ramfb->use_legacy_x86_rom, errp);
|
|
}
|
|
|
|
static bool migrate_needed(void *opaque)
|
|
{
|
|
RAMFBStandaloneState *ramfb = RAMFB(opaque);
|
|
|
|
return ramfb->migrate;
|
|
}
|
|
|
|
static const VMStateDescription ramfb_dev_vmstate = {
|
|
.name = "ramfb-dev",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.needed = migrate_needed,
|
|
.fields = (const VMStateField[]) {
|
|
VMSTATE_STRUCT_POINTER(state, RAMFBStandaloneState, ramfb_vmstate, RAMFBState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static const Property ramfb_properties[] = {
|
|
DEFINE_PROP_BOOL("x-migrate", RAMFBStandaloneState, migrate, true),
|
|
DEFINE_PROP_BOOL("use-legacy-x86-rom", RAMFBStandaloneState,
|
|
use_legacy_x86_rom, false),
|
|
};
|
|
|
|
static void ramfb_class_initfn(ObjectClass *klass, const void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
|
|
dc->vmsd = &ramfb_dev_vmstate;
|
|
dc->realize = ramfb_realizefn;
|
|
dc->desc = "ram framebuffer standalone device";
|
|
device_class_set_props(dc, ramfb_properties);
|
|
}
|
|
|
|
static const TypeInfo ramfb_info = {
|
|
.name = TYPE_RAMFB_DEVICE,
|
|
.parent = TYPE_DYNAMIC_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(RAMFBStandaloneState),
|
|
.class_init = ramfb_class_initfn,
|
|
};
|
|
|
|
static void ramfb_register_types(void)
|
|
{
|
|
type_register_static(&ramfb_info);
|
|
}
|
|
|
|
type_init(ramfb_register_types)
|