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From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>, graf@amazon.com,
Eric Blake <eblake@redhat.com>, Peter Maydell <peter.maydell@linaro.org>,
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=?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>,
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=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>,
Ard Biesheuvel <ardb@kernel.org>
Subject: [PATCH v3 17/23] hw/uefi: add uefi-vars-sysbus device
Date: Tue, 11 Feb 2025 10:23:15 +0100
Message-ID: <20250211092324.965440-18-kraxel@redhat.com>
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This adds sysbus bindings for the variable service.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/uefi/var-service-sysbus.c | 89 ++++++++++++++++++++++++++++++++++++
hw/uefi/meson.build | 3 +-
2 files changed, 91 insertions(+), 1 deletion(-)
create mode 100644 hw/uefi/var-service-sysbus.c
diff --git a/hw/uefi/var-service-sysbus.c b/hw/uefi/var-service-sysbus.c
new file mode 100644
index 000000000000..1815c0b8d27f
--- /dev/null
+++ b/hw/uefi/var-service-sysbus.c
@@ -0,0 +1,89 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * uefi vars device - sysbus variant.
+ */
+#include "qemu/osdep.h"
+#include "migration/vmstate.h"
+
+#include "hw/qdev-properties.h"
+#include "hw/sysbus.h"
+
+#include "hw/uefi/var-service.h"
+#include "hw/uefi/var-service-api.h"
+
+OBJECT_DECLARE_SIMPLE_TYPE(uefi_vars_sysbus_state, UEFI_VARS_SYSBUS)
+
+struct uefi_vars_sysbus_state {
+ SysBusDevice parent_obj;
+ struct uefi_vars_state state;
+};
+
+static const VMStateDescription vmstate_uefi_vars_sysbus =3D {
+ .name =3D TYPE_UEFI_VARS_SYSBUS,
+ .fields =3D (VMStateField[]) {
+ VMSTATE_STRUCT(state, uefi_vars_sysbus_state, 0,
+ vmstate_uefi_vars, uefi_vars_state),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const Property uefi_vars_sysbus_properties[] =3D {
+ DEFINE_PROP_SIZE("size", uefi_vars_sysbus_state, state.max_storage,
+ 256 * 1024),
+ DEFINE_PROP_STRING("jsonfile", uefi_vars_sysbus_state, state.jsonfile),
+ DEFINE_PROP_BOOL("force-secure-boot", uefi_vars_sysbus_state,
+ state.force_secure_boot, false),
+ DEFINE_PROP_BOOL("disable-custom-mode", uefi_vars_sysbus_state,
+ state.disable_custom_mode, false),
+};
+
+static void uefi_vars_sysbus_init(Object *obj)
+{
+ uefi_vars_sysbus_state *uv =3D UEFI_VARS_SYSBUS(obj);
+
+ uefi_vars_init(obj, &uv->state);
+}
+
+static void uefi_vars_sysbus_reset(DeviceState *dev)
+{
+ uefi_vars_sysbus_state *uv =3D UEFI_VARS_SYSBUS(dev);
+
+ uefi_vars_hard_reset(&uv->state);
+}
+
+static void uefi_vars_sysbus_realize(DeviceState *dev, Error **errp)
+{
+ uefi_vars_sysbus_state *uv =3D UEFI_VARS_SYSBUS(dev);
+ SysBusDevice *sysbus =3D SYS_BUS_DEVICE(dev);
+
+ sysbus_init_mmio(sysbus, &uv->state.mr);
+ uefi_vars_realize(&uv->state, errp);
+}
+
+static void uefi_vars_sysbus_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc =3D DEVICE_CLASS(klass);
+
+ dc->realize =3D uefi_vars_sysbus_realize;
+ dc->vmsd =3D &vmstate_uefi_vars_sysbus;
+ device_class_set_legacy_reset(dc, uefi_vars_sysbus_reset);
+ device_class_set_props(dc, uefi_vars_sysbus_properties);
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+}
+
+static const TypeInfo uefi_vars_sysbus_info =3D {
+ .name =3D TYPE_UEFI_VARS_SYSBUS,
+ .parent =3D TYPE_SYS_BUS_DEVICE,
+ .instance_size =3D sizeof(uefi_vars_sysbus_state),
+ .instance_init =3D uefi_vars_sysbus_init,
+ .class_init =3D uefi_vars_sysbus_class_init,
+};
+module_obj(TYPE_UEFI_VARS_SYSBUS);
+
+static void uefi_vars_sysbus_register_types(void)
+{
+ type_register_static(&uefi_vars_sysbus_info);
+}
+
+type_init(uefi_vars_sysbus_register_types)
diff --git a/hw/uefi/meson.build b/hw/uefi/meson.build
index d280881f457a..cf2d26e9bf9a 100644
--- a/hw/uefi/meson.build
+++ b/hw/uefi/meson.build
@@ -6,7 +6,8 @@ if (config_all_devices.has_key('CONFIG_UEFI_VARS'))
'var-service-auth.c',
'var-service-guid.c',
'var-service-utils.c',
- 'var-service-policy.c'))
+ 'var-service-policy.c',
+ 'var-service-sysbus.c'))
uefi_vars_ss.add(when: gnutls,
if_true: files('var-service-pkcs7.c'),
if_false: files('var-service-pkcs7-stub.c'))
--=20
2.48.1