diff options
| -rw-r--r-- | src/interface/efi/efidrvprefix.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/interface/efi/efidrvprefix.c b/src/interface/efi/efidrvprefix.c index f9bfa4c..ac7d943 100644 --- a/src/interface/efi/efidrvprefix.c +++ b/src/interface/efi/efidrvprefix.c @@ -34,6 +34,8 @@ FILE_LICENCE ( GPL2_OR_LATER ); */ EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab ) { + EFI_BOOT_SERVICES *bs; + EFI_TPL saved_tpl; EFI_STATUS efirc; /* Initialise stack cookie */ @@ -43,10 +45,17 @@ EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle, if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 ) return efirc; + /* Raise TPL */ + bs = efi_systab->BootServices; + saved_tpl = bs->RaiseTPL ( TPL_CALLBACK ); + /* Initialise iPXE environment */ initialise(); startup(); + /* Restore TPL */ + bs->RestoreTPL ( saved_tpl ); + return 0; } |