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efi_loader: implement event groups

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If an event of a group event is signaled all other events of the same
group are signaled too.

Function efi_signal_event is renamed to efi_queue_event.
A new function efi_signal_event is introduced that checks if an event
belongs to a group and than signals all events of the group.
Event group notifciation is implemented for ExitBootServices,
InstallConfigurationTable, and ResetSystem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt
2018-02-18 15:17:52 +01:00
committed by Alexander Graf
parent a3a28f5f0c
commit b095f3c85f
6 changed files with 101 additions and 28 deletions
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7
include/efi_loader.h
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@@ -165,6 +165,7 @@ struct efi_object {
* @notify_tpl: Task priority level of notifications
* @nofify_function: Function to call when the event is triggered
* @notify_context: Data to be passed to the notify function
* @group: Event group
* @trigger_time: Period of the timer
* @trigger_next: Next time to trigger the timer
* @trigger_type: Type of timer, see efi_set_timer
@@ -177,6 +178,7 @@ struct efi_event {
efi_uintn_t notify_tpl;
void (EFIAPI *notify_function)(struct efi_event *event, void *context);
void *notify_context;
const efi_guid_t *group;
u64 trigger_next;
u64 trigger_time;
enum efi_timer_delay trigger_type;
@@ -186,6 +188,8 @@ struct efi_event {
/* This list contains all UEFI objects we know of */
extern struct list_head efi_obj_list;
/* List of all events */
extern struct list_head efi_events;
/* Called by bootefi to make console interface available */
int efi_console_register(void);
@@ -252,7 +256,8 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
void *notify_context, struct efi_event **event);
void *notify_context, efi_guid_t *group,
struct efi_event **event);
/* Call this to set a timer */
efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
uint64_t trigger_time);