diff options
Diffstat (limited to 'src/drivers/pc80/tpm/romstage.c')
| -rw-r--r-- | src/drivers/pc80/tpm/romstage.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/drivers/pc80/tpm/romstage.c b/src/drivers/pc80/tpm/romstage.c index 5e29e3a14d..96760e22f4 100644 --- a/src/drivers/pc80/tpm/romstage.c +++ b/src/drivers/pc80/tpm/romstage.c @@ -51,6 +51,12 @@ static const struct { }; static const struct { + u8 buffer[12]; +} tpm_deactivate_cmd = { + {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x3 } +}; + +static const struct { u8 buffer[10]; } tpm_continueselftest_cmd = { { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53 } @@ -181,6 +187,19 @@ void init_tpm(int s3resume) u32 result; u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + if (CONFIG_TPM_DEACTIVATE) { + printk(BIOS_SPEW, "TPM: Deactivate\n"); + result = TlclSendReceive(tpm_deactivate_cmd.buffer, + response, sizeof(response)); + if (result == TPM_SUCCESS) { + printk(BIOS_SPEW, "TPM: OK.\n"); + return; + } + + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + /* Doing TPM startup when we're not coming in on the S3 resume path * saves us roughly 20ms in boot time only. This does not seem to * be worth an API change to vboot_reference-firmware right now, so |