diff options
| author | Frans Hendriks <fhendriks@eltan.com> | 2019-06-26 10:43:40 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-07-19 09:56:56 +0000 |
| commit | 589eff7e476f452773bb3cc2ca1469446e2097f4 (patch) | |
| tree | 7b948ca7e244f840b3553bde2f8814820ede765f /src/security/tpm/tss/tcg-2.0/tss.c | |
| parent | 73c405ae309719315f75d6b51895e8066287c369 (diff) | |
security/tpm/tss/tcg-2.0: Add TPM2 function tlcl_getcapability()
Add function tlcl_getcapability() to return TPM2 capability.
To support TPM2 capability TPM_CAP_PCRS handling is added to
unmarshal_get_capability().
BUG=N/A
TEST=Build binary and verified logging on Facebook FBG-1701
Change-Id: I85e1bd2822aa6e7fd95ff2b9faa25cf183e6de37
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30826
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/security/tpm/tss/tcg-2.0/tss.c')
| -rw-r--r-- | src/security/tpm/tss/tcg-2.0/tss.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/security/tpm/tss/tcg-2.0/tss.c b/src/security/tpm/tss/tcg-2.0/tss.c index c4b553840f..08a7caa1a9 100644 --- a/src/security/tpm/tss/tcg-2.0/tss.c +++ b/src/security/tpm/tss/tcg-2.0/tss.c @@ -1,5 +1,6 @@ /* * Copyright 2016 The Chromium OS Authors. All rights reserved. + * Copyright 2017-2019 Eltan B.V. * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -366,3 +367,31 @@ uint32_t tlcl_disable_platform_hierarchy(void) return TPM_SUCCESS; } + +uint32_t tlcl_get_capability(TPM_CAP capability, uint32_t property, + uint32_t property_count, + TPMS_CAPABILITY_DATA *capability_data) +{ + struct tpm2_get_capability cmd; + struct tpm2_response *response; + + cmd.capability = capability; + cmd.property = property; + cmd.propertyCount = property_count; + + if (property_count > 1) { + printk(BIOS_ERR, "%s: property_count more than one not " + "supported yet\n", __func__); + return TPM_E_IOERROR; + } + + response = tpm_process_command(TPM2_GetCapability, &cmd); + + if (!response) { + printk(BIOS_ERR, "%s: Command Failed\n", __func__); + return TPM_E_IOERROR; + } + + memcpy(capability_data, &response->gc.cd, sizeof(TPMS_CAPABILITY_DATA)); + return TPM_SUCCESS; +} |