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efi_loader: EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES

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Implement the EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES event group
handling.

Add the definition of EFI_EVENT_GROUP_AFTER_READY_TO_BOOT.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2021-11-16 18:46:27 +01:00
parent 5d49b32f0a
commit 43eaf5b13f
2 changed files with 22 additions and 0 deletions
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9
include/efi_api.h
View File

@ -360,10 +360,15 @@ struct efi_runtime_services {
};
/* EFI event group GUID definitions */
#define EFI_EVENT_GROUP_EXIT_BOOT_SERVICES \
EFI_GUID(0x27abf055, 0xb1b8, 0x4c26, 0x80, 0x48, \
0x74, 0x8f, 0x37, 0xba, 0xa2, 0xdf)
#define EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES \
EFI_GUID(0x8be0e274, 0x3970, 0x4b44, 0x80, 0xc5, \
0x1a, 0xb9, 0x50, 0x2f, 0x3b, 0xfc)
#define EFI_EVENT_GROUP_VIRTUAL_ADDRESS_CHANGE \
EFI_GUID(0x13fa7698, 0xc831, 0x49c7, 0x87, 0xea, \
0x8f, 0x43, 0xfc, 0xc2, 0x51, 0x96)
@ -376,6 +381,10 @@ struct efi_runtime_services {
EFI_GUID(0x7ce88fb3, 0x4bd7, 0x4679, 0x87, 0xa8, \
0xa8, 0xd8, 0xde, 0xe5, 0x0d, 0x2b)
#define EFI_EVENT_GROUP_AFTER_READY_TO_BOOT \
EFI_GUID(0x3a2a00ad, 0x98b9, 0x4cdf, 0xa4, 0x78, \
0x70, 0x27, 0x77, 0xf1, 0xc1, 0xb)
#define EFI_EVENT_GROUP_RESET_SYSTEM \
EFI_GUID(0x62da6a56, 0x13fb, 0x485a, 0xa8, 0xda, \
0xa3, 0xdd, 0x79, 0x12, 0xcb, 0x6b)

13
lib/efi_loader/efi_boottime.c
View File

@ -71,6 +71,9 @@ const efi_guid_t efi_guid_driver_binding_protocol =
/* event group ExitBootServices() invoked */
const efi_guid_t efi_guid_event_group_exit_boot_services =
EFI_EVENT_GROUP_EXIT_BOOT_SERVICES;
/* event group before ExitBootServices() invoked */
const efi_guid_t efi_guid_event_group_before_exit_boot_services =
EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES;
/* event group SetVirtualAddressMap() invoked */
const efi_guid_t efi_guid_event_group_virtual_address_change =
EFI_EVENT_GROUP_VIRTUAL_ADDRESS_CHANGE;
@ -2123,6 +2126,16 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
if (!systab.boottime)
goto out;
/* Notify EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES event group. */
list_for_each_entry(evt, &efi_events, link) {
if (evt->group &&
!guidcmp(evt->group,
&efi_guid_event_group_before_exit_boot_services)) {
efi_signal_event(evt);
break;
}
}
/* Stop all timer related activities */
timers_enabled = false;