diff options
Diffstat (limited to 'drivers/char/tpm/tpm_crb_ffa.h')
| -rw-r--r-- | drivers/char/tpm/tpm_crb_ffa.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_crb_ffa.h b/drivers/char/tpm/tpm_crb_ffa.h new file mode 100644 index 000000000000..645c41ede10e --- /dev/null +++ b/drivers/char/tpm/tpm_crb_ffa.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2024 Arm Ltd. + * + * This device driver implements the TPM CRB start method + * as defined in the TPM Service Command Response Buffer + * Interface Over FF-A (DEN0138). + */ +#ifndef _TPM_CRB_FFA_H +#define _TPM_CRB_FFA_H + +#if IS_REACHABLE(CONFIG_TCG_ARM_CRB_FFA) +int tpm_crb_ffa_init(void); +int tpm_crb_ffa_get_interface_version(u16 *major, u16 *minor); +int tpm_crb_ffa_start(int request_type, int locality); +#else +static inline int tpm_crb_ffa_init(void) { return 0; } +static inline int tpm_crb_ffa_get_interface_version(u16 *major, u16 *minor) { return 0; } +static inline int tpm_crb_ffa_start(int request_type, int locality) { return 0; } +#endif + +#define CRB_FFA_START_TYPE_COMMAND 0 +#define CRB_FFA_START_TYPE_LOCALITY_REQUEST 1 + +#endif |