diff options
Diffstat (limited to 'src/lib/tlcl.c')
| -rw-r--r-- | src/lib/tlcl.c | 48 |
1 files changed, 32 insertions, 16 deletions
diff --git a/src/lib/tlcl.c b/src/lib/tlcl.c index fc989dea32..34da816adc 100644 --- a/src/lib/tlcl.c +++ b/src/lib/tlcl.c @@ -47,27 +47,31 @@ static int tpm_send_receive(const uint8_t *request, } /* Sets the size field of a TPM command. */ -static inline void set_tpm_command_size(uint8_t *buffer, uint32_t size) { +static inline void set_tpm_command_size(uint8_t *buffer, uint32_t size) +{ to_tpm_uint32(buffer + sizeof(uint16_t), size); } /* Gets the size field of a TPM command. */ __attribute__((unused)) -static inline int tpm_command_size(const uint8_t *buffer) { +static inline int tpm_command_size(const uint8_t *buffer) +{ uint32_t size; from_tpm_uint32(buffer + sizeof(uint16_t), &size); return (int) size; } /* Gets the code field of a TPM command. */ -static inline int tpm_command_code(const uint8_t *buffer) { +static inline int tpm_command_code(const uint8_t *buffer) +{ uint32_t code; from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); return code; } /* Gets the return code field of a TPM result. */ -static inline int tpm_return_code(const uint8_t *buffer) { +static inline int tpm_return_code(const uint8_t *buffer) +{ return tpm_command_code(buffer); } @@ -75,7 +79,8 @@ static inline int tpm_return_code(const uint8_t *buffer) { * DOING_SELFTEST errors are returned. */ static uint32_t tlcl_send_receive_no_retry(const uint8_t *request, - uint8_t *response, int max_length) { + uint8_t *response, int max_length) +{ uint32_t response_length = max_length; uint32_t result; @@ -104,7 +109,8 @@ return result; /* Sends a TPM command and gets a response. Returns 0 if success or the TPM * error code if error. Waits for the self test to complete if needed. */ uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, - int max_length) { + int max_length) +{ uint32_t result = tlcl_send_receive_no_retry(request, response, max_length); /* If the command fails because the self test has not completed, try it @@ -133,7 +139,8 @@ uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, } /* Sends a command and returns the error code. */ -static uint32_t send(const uint8_t *command) { +static uint32_t send(const uint8_t *command) +{ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; return tlcl_send_receive(command, response, sizeof(response)); } @@ -142,7 +149,8 @@ static uint32_t send(const uint8_t *command) { static uint8_t tlcl_init_done CAR_GLOBAL; -uint32_t tlcl_lib_init(void) { +uint32_t tlcl_lib_init(void) +{ uint8_t done = car_get_var(tlcl_init_done); if (done) return VB2_SUCCESS; @@ -157,12 +165,14 @@ uint32_t tlcl_lib_init(void) { return VB2_SUCCESS; } -uint32_t tlcl_startup(void) { +uint32_t tlcl_startup(void) +{ VBDEBUG("TPM: Startup\n"); return send(tpm_startup_cmd.buffer); } -uint32_t tlcl_resume(void) { +uint32_t tlcl_resume(void) +{ VBDEBUG("TPM: Resume\n"); return send(tpm_resume_cmd.buffer); } @@ -236,32 +246,38 @@ uint32_t tlcl_read(uint32_t index, void *data, uint32_t length) } -uint32_t tlcl_assert_physical_presence(void) { +uint32_t tlcl_assert_physical_presence(void) +{ VBDEBUG("TPM: Asserting physical presence\n"); return send(tpm_ppassert_cmd.buffer); } -uint32_t tlcl_physical_presence_cmd_enable(void) { +uint32_t tlcl_physical_presence_cmd_enable(void) +{ VBDEBUG("TPM: Enable the physical presence command\n"); return send(tpm_ppenable_cmd.buffer); } -uint32_t tlcl_finalize_physical_presence(void) { +uint32_t tlcl_finalize_physical_presence(void) +{ VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); return send(tpm_finalizepp_cmd.buffer); } -uint32_t tlcl_set_nv_locked(void) { +uint32_t tlcl_set_nv_locked(void) +{ VBDEBUG("TPM: Set NV locked\n"); return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); } -uint32_t tlcl_force_clear(void) { +uint32_t tlcl_force_clear(void) +{ VBDEBUG("TPM: Force clear\n"); return send(tpm_forceclear_cmd.buffer); } -uint32_t tlcl_set_enable(void) { +uint32_t tlcl_set_enable(void) +{ VBDEBUG("TPM: Enabling TPM\n"); return send(tpm_physicalenable_cmd.buffer); } |