efi_loader: add missing runtime services stubs

Add stubs for UpdateCapsule, QueryCapsuleCapabilities, and
QueryVariableInfo.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

include/efi_api.h

@@ -187,6 +187,17 @@ enum efi_reset_type {
 #define EFI_RUNTIME_SERVICES_SIGNATURE	0x5652453544e5552ULL
 #define EFI_RUNTIME_SERVICES_REVISION	0x00010000
 
+#define CAPSULE_FLAGS_PERSIST_ACROSS_RESET	0x00010000
+#define CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE	0x00020000
+#define CAPSULE_FLAGS_INITIATE_RESET		0x00040000
+
+struct efi_capsule_header {
+	efi_guid_t *capsule_guid;
+	u32 header_size;
+	u32 flags;
+	u32 capsule_image_size;
+};
+
 struct efi_runtime_services {
 	struct efi_table_hdr hdr;
 	efi_status_t (EFIAPI *get_time)(struct efi_time *time,
@@ -216,9 +227,20 @@ struct efi_runtime_services {
 	void (EFIAPI *reset_system)(enum efi_reset_type reset_type,
 				    efi_status_t reset_status,
 				    unsigned long data_size, void *reset_data);
-	void *update_capsule;
-	void *query_capsule_caps;
-	void *query_variable_info;
+	efi_status_t (EFIAPI *update_capsule)(
+			struct efi_capsule_header **capsule_header_array,
+			efi_uintn_t capsule_count,
+			u64 scatter_gather_list);
+	efi_status_t (EFIAPI *query_capsule_caps)(
+			struct efi_capsule_header **capsule_header_array,
+			efi_uintn_t capsule_count,
+			u64 maximum_capsule_size,
+			u32 reset_type);
+	efi_status_t (EFIAPI *query_variable_info)(
+			u32 attributes,
+			u64 maximum_variable_storage_size,
+			u64 remaining_variable_storage_size,
+			u64 maximum_variable_size);
 };
 
 /* EFI Configuration Table and GUID definitions */

lib/efi_loader/efi_runtime.c

@@ -381,6 +381,32 @@ static efi_status_t __efi_runtime EFIAPI efi_invalid_parameter(void)
 	return EFI_INVALID_PARAMETER;
 }
 
+efi_status_t __efi_runtime EFIAPI efi_update_capsule(
+			struct efi_capsule_header **capsule_header_array,
+			efi_uintn_t capsule_count,
+			u64 scatter_gather_list)
+{
+	return EFI_UNSUPPORTED;
+}
+
+efi_status_t __efi_runtime EFIAPI efi_query_capsule_caps(
+			struct efi_capsule_header **capsule_header_array,
+			efi_uintn_t capsule_count,
+			u64 maximum_capsule_size,
+			u32 reset_type)
+{
+	return EFI_UNSUPPORTED;
+}
+
+efi_status_t __efi_runtime EFIAPI efi_query_variable_info(
+			u32 attributes,
+			u64 maximum_variable_storage_size,
+			u64 remaining_variable_storage_size,
+			u64 maximum_variable_size)
+{
+	return EFI_UNSUPPORTED;
+}
+
 struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
 	.hdr = {
 		.signature = EFI_RUNTIME_SERVICES_SIGNATURE,
@@ -398,4 +424,7 @@ struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
 	.set_variable = efi_set_variable,
 	.get_next_high_mono_count = (void *)&efi_device_error,
 	.reset_system = &efi_reset_system_boottime,
+	.update_capsule = efi_update_capsule,
+	.query_capsule_caps = efi_query_capsule_caps,
+	.query_variable_info = efi_query_variable_info,
 };