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 --- include/efi_api.h | 9 ++++++++- lib/efi_loader/efi_boottime.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/include/efi_api.h b/include/efi_api.h index a2706a0ae42..d51fb1b6216 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -166,7 +166,14 @@ struct efi_boot_services { 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 599f0c597d6..013e0353c3a 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -525,6 +525,38 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, return EFI_OUT_OF_RESOURCES; }
+/* + * 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. * @@ -2846,6 +2878,7 @@ static const struct efi_boot_services efi_boot_services = { .calculate_crc32 = efi_calculate_crc32, .copy_mem = efi_copy_mem, .set_mem = efi_set_mem, + .create_event_ex = efi_create_event_ex, };