diff options
| author | Werner Zeh <werner.zeh@siemens.com> | 2018-10-23 07:40:08 +0200 |
|---|---|---|
| committer | Philipp Deppenwiese <zaolin.daisuki@gmail.com> | 2018-10-31 14:14:16 +0000 |
| commit | 30cf14ff3fdd9fbbaa3ffb841359c2ee1a0bfcad (patch) | |
| tree | fcce3ab226d884749d707697fcbcd1a873fd6eab /src/security/tpm/tspi.h | |
| parent | 5220aeab6ef62e26f92e64ce4bab20d26e53420f (diff) | |
| download | coreboot-30cf14ff3fdd9fbbaa3ffb841359c2ee1a0bfcad.tar.xz | |
security/tpm: Add function to measure a region device
Add a new function which can hash a given region device and extend a PCR
in the TPM with the result. The needed SHA algorithms are included from
3rdparty/vboot and thus not duplicated in the coreboot tree.
For now VB2_LIB is not usable in postcar stage. Follow-up commits will
add the ability to use the lib in postcar as well. Once this feature is
ready, the library will be included in postcar stage to make this
function available in every stage.
Change-Id: I126cc3500fd039d63743db78002a04d201ab18aa
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/29234
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Diffstat (limited to 'src/security/tpm/tspi.h')
| -rw-r--r-- | src/security/tpm/tspi.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/security/tpm/tspi.h b/src/security/tpm/tspi.h index e4ddefcdd3..d69b97695d 100644 --- a/src/security/tpm/tspi.h +++ b/src/security/tpm/tspi.h @@ -3,6 +3,7 @@ * * Copyright (c) 2013 The Chromium OS Authors. All rights reserved. * Copyright 2018 Facebook Inc. + * Copyright 2018 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,6 +20,10 @@ #include <security/tpm/tss.h> #include <commonlib/tcpa_log_serialized.h> +#include <commonlib/region.h> + +#define TPM_PCR_MAX_LEN 64 +#define HASH_DATA_CHUNK_SIZE 1024 /** * Add table entry for cbmem TCPA log. @@ -51,4 +56,14 @@ uint32_t tpm_clear_and_reenable(void); */ uint32_t tpm_setup(int s3flag); +/** + * Measure a given region device and extend given PCR with the result. + * @param *rdev Pointer to the region device to measure + * @param pcr Index of the PCR which will be extended by this measure + * @param *rname Name of the region that is measured + * @return TPM error code in case of error otherwise TPM_SUCCESS + */ +uint32_t tpm_measure_region(const struct region_device *rdev, uint8_t pcr, + const char *rname); + #endif /* TSPI_H_ */ |