diff options
Diffstat (limited to 'src/drivers/intel/ptt/ptt.h')
-rw-r--r-- | src/drivers/intel/ptt/ptt.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/drivers/intel/ptt/ptt.h b/src/drivers/intel/ptt/ptt.h new file mode 100644 index 0000000000..ed5e90f599 --- /dev/null +++ b/src/drivers/intel/ptt/ptt.h @@ -0,0 +1,27 @@ +/* + * This file is part of the coreboot project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This driver checks if the PTT Bit is set correctly within the FWSTS4 + * register. This is needed in order to use the iTPM, because we have to + * check prior using the interface that this bit is set correctly - otherwise + * it could work unpredictable. The bit should already be set if the Intel ME + * is still in the preboot phase. + * + */ +#include <stdint.h> +/* + * ptt_active + * + * Checks if the Intel PTT is active. If PTT is active, returns true, + * false otherwise. + */ +bool ptt_active(void); |