diff options
Diffstat (limited to 'src/security/tpm')
| -rw-r--r-- | src/security/tpm/tss/tcg-2.0/tss.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/security/tpm/tss/tcg-2.0/tss.c b/src/security/tpm/tss/tcg-2.0/tss.c index e6ec57c811..c67fdfaa49 100644 --- a/src/security/tpm/tss/tcg-2.0/tss.c +++ b/src/security/tpm/tss/tcg-2.0/tss.c @@ -61,12 +61,24 @@ static uint32_t tlcl_send_startup(TPM_SU type) startup.startup_type = type; response = tpm_process_command(TPM2_Startup, &startup); - if (response && (response->hdr.tpm_code == 0 || - response->hdr.tpm_code == TPM_RC_INITIALIZE)) { - return TPM_SUCCESS; + /* IO error, tpm2_response pointer is empty. */ + if (response == NULL) { + printk(BIOS_ERR, "%s: TPM communication error\n", __func__); + return TPM_E_IOERROR; } + printk(BIOS_INFO, "%s: Startup return code is %x\n", __func__, response->hdr.tpm_code); + + switch (response->hdr.tpm_code) { + case TPM_RC_INITIALIZE: + /* TPM already initialized. */ + return TPM_E_INVALID_POSTINIT; + case TPM2_RC_SUCCESS: + return TPM_SUCCESS; + } + + /* Collapse any other errors into TPM_E_IOERROR. */ return TPM_E_IOERROR; } |