The UEFI standard requires a watchdog timer that is preset to five minutes. After this period the system is reset.
The watchdog shall be disabled by ExitBootServices.
An EFI application can call efi_set_watchdog_timer to either reset the watchdog timer or disable it. This may be necessary if the EFI application has an interactive interface which may be used for more than five minutes, e.g. the grub console.
U-Boot currently does not implement this watchdog.
If efi_set_watchdog_timer is called to reset the watchdog we can safely return EFI_SUCCESS to signal that we will not interrupt the EFI application in the timeout interval.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 2674c5187e..de6646feb0 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -887,7 +887,7 @@ static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, { EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, data_size, watchdog_data); - return efi_unsupported(__func__); + return EFI_EXIT(EFI_SUCCESS); }
static efi_status_t EFIAPI efi_connect_controller(