efi_loader: create stub for CreateEventEx
Currently we set the function pointer for the CreateEventEx boot service
to NULL. When called this would lead to an immediate failure.
A function stub is provided which handles the case that the boot service
is called without an event group and returns EFI_UNSUPPORTED otherwise.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 205f8f1..10598a2 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -166,7 +166,14 @@
void (EFIAPI *copy_mem)(void *destination, const void *source,
size_t length);
void (EFIAPI *set_mem)(void *buffer, size_t size, uint8_t value);
- void *create_event_ex;
+ efi_status_t (EFIAPI *create_event_ex)(
+ uint32_t type, efi_uintn_t notify_tpl,
+ void (EFIAPI *notify_function) (
+ struct efi_event *event,
+ void *context),
+ void *notify_context,
+ efi_guid_t *event_group,
+ struct efi_event **event);
};
/* Types and defines for EFI ResetSystem */
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index da93498..2cea712 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -526,6 +526,38 @@
}
/*
+ * Create an event in a group.
+ *
+ * This function implements the CreateEventEx service.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ * TODO: Support event groups
+ *
+ * @type type of the event to create
+ * @notify_tpl task priority level of the event
+ * @notify_function notification function of the event
+ * @notify_context pointer passed to the notification function
+ * @event created event
+ * @event_group event group
+ * @return status code
+ */
+efi_status_t EFIAPI efi_create_event_ex(uint32_t type, efi_uintn_t notify_tpl,
+ void (EFIAPI *notify_function) (
+ struct efi_event *event,
+ void *context),
+ void *notify_context,
+ efi_guid_t *event_group,
+ struct efi_event **event)
+{
+ EFI_ENTRY("%d, 0x%zx, %p, %p, %pUl", type, notify_tpl, notify_function,
+ notify_context, event_group);
+ if (event_group)
+ return EFI_EXIT(EFI_UNSUPPORTED);
+ return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
+ notify_context, event));
+}
+
+/*
* Create an event.
*
* This function implements the CreateEvent service.
@@ -2851,6 +2883,7 @@
.calculate_crc32 = efi_calculate_crc32,
.copy_mem = efi_copy_mem,
.set_mem = efi_set_mem,
+ .create_event_ex = efi_create_event_ex,
};