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hw/uefi-vars-sysbus: add x64 variant

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The x86 variant of the device is mapped on the fixed address 0xfef10000
and uses etc/hardware-info instead of FDT to pass the mapping location
to the edk2 firmware.  The latter allows to move the device to a
different location should that turn out to be necessary in the future.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20250225163031.1409078-21-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2025-02-25 17:30:24 +01:00
parent 03223b665c
commit 69392de913
1 changed files with 32 additions and 0 deletions
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32
hw/uefi/var-service-sysbus.c
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@ -9,6 +9,7 @@
#include "hw/qdev-properties.h"
#include "hw/sysbus.h"
#include "hw/uefi/hardware-info.h"
#include "hw/uefi/var-service.h"
#include "hw/uefi/var-service-api.h"
@ -75,6 +76,7 @@ static void uefi_vars_sysbus_class_init(ObjectClass *klass, void *data)
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
/* generic: hardware discovery via FDT */
static const TypeInfo uefi_vars_sysbus_info = {
.name = TYPE_UEFI_VARS_SYSBUS,
.parent = TYPE_SYS_BUS_DEVICE,
@ -84,9 +86,39 @@ static const TypeInfo uefi_vars_sysbus_info = {
};
module_obj(TYPE_UEFI_VARS_SYSBUS);
static void uefi_vars_x64_realize(DeviceState *dev, Error **errp)
{
HARDWARE_INFO_SIMPLE_DEVICE hwinfo = {
.mmio_address = cpu_to_le64(0xfef10000),
};
SysBusDevice *sysbus = SYS_BUS_DEVICE(dev);
uefi_vars_sysbus_realize(dev, errp);
hardware_info_register(HardwareInfoQemuUefiVars,
&hwinfo, sizeof(hwinfo));
sysbus_mmio_map(sysbus, 0, hwinfo.mmio_address);
}
static void uefi_vars_x64_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = uefi_vars_x64_realize;
}
/* x64: hardware discovery via etc/hardware-info fw_cfg */
static const TypeInfo uefi_vars_x64_info = {
.name = TYPE_UEFI_VARS_X64,
.parent = TYPE_UEFI_VARS_SYSBUS,
.class_init = uefi_vars_x64_class_init,
};
module_obj(TYPE_UEFI_VARS_X64);
static void uefi_vars_sysbus_register_types(void)
{
type_register_static(&uefi_vars_sysbus_info);
type_register_static(&uefi_vars_x64_info);
}
type_init(uefi_vars_sysbus_register_types)