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efi_loader: add return to efibootmgr event group

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When the image loaded by efibootmgr returns, efibootmgr
needs to clean the resources. Adding the event of returning
to efibootmgr is useful to simplify the implementation.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Masahisa Kojima 2023-11-10 13:25:39 +09:00 • committed by Ilias Apalodimas
parent e23c8e81eb
commit e0d1a1ea68
4 changed files with 20 additions and 0 deletions
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12
cmd/bootefi.c
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@ -356,6 +356,7 @@ static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options)
efi_status_t ret;
efi_uintn_t exit_data_size = 0;
u16 *exit_data = NULL;
struct efi_event *evt;
/* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
switch_to_non_secure_mode();
@ -394,6 +395,17 @@ out:
log_err("Failed to remove loadfile2 for initrd\n");
}
/* Notify EFI_EVENT_GROUP_RETURN_TO_EFIBOOTMGR event group. */
list_for_each_entry(evt, &efi_events, link) {
if (evt->group &&
!guidcmp(evt->group,
&efi_guid_event_group_return_to_efibootmgr)) {
efi_signal_event(evt);
EFI_CALL(systab.boottime->close_event(evt));
break;
}
}
/* Control is returned to U-Boot, disable EFI watchdog */
efi_set_watchdog(0);