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security/tpm: Add TCPA logging functionality

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* TCG spec only applies to BIOS or UEFI.
* Therefore implement coreboot TCPA compliant log
in CBMEM.
* Write CBMEM log into the coreboot table for CBMEM tool access

Change-Id: I0a52494f647d21e2587231af26ed13d62b3a72f5
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/22867
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Philipp Deppenwiese
2017-12-14 15:49:32 +01:00
committed by Philipp Deppenwiese
parent ef8c559e53
commit f18dc5c72c
6 changed files with 141 additions and 8 deletions
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2
src/commonlib/include/commonlib/cbmem_id.h
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@@ -64,6 +64,7 @@
#define CBMEM_ID_STAGEx_RAW 0x57a9e200
#define CBMEM_ID_STORAGE_DATA 0x53746f72
#define CBMEM_ID_TCPA_LOG 0x54435041
#define CBMEM_ID_TCPA_COMPLIANT_LOG 0x54445041
#define CBMEM_ID_TIMESTAMP 0x54494d45
#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
#define CBMEM_ID_VBOOT_SEL_REG 0x780074f1
@@ -120,6 +121,7 @@
{ CBMEM_ID_SMM_SAVE_SPACE, "SMM BACKUP " }, \
{ CBMEM_ID_STORAGE_DATA, "SD/MMC/eMMC" }, \
{ CBMEM_ID_TCPA_LOG, "TCPA LOG " }, \
{ CBMEM_ID_TCPA_COMPLIANT_LOG, "TCPA COMPLIANT LOG " }, \
{ CBMEM_ID_TIMESTAMP, "TIME STAMP " }, \
{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " }, \
{ CBMEM_ID_VBOOT_SEL_REG, "VBOOT SEL " }, \

41
src/commonlib/include/commonlib/tcpa_log_serialized.h Normal file
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@@ -0,0 +1,41 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018 Facebook Inc.
*
* 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
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __TCPA_LOG_SERIALIZED_H__
#define __TCPA_LOG_SERIALIZED_H__
#include <compiler.h>
#include <stdint.h>
#define MAX_TCPA_LOG_ENTRIES 50
#define TCPA_LOG_STRING_LENGTH 512
#define TCPA_FORMAT_HASH_LENGTH 128
#define TCPA_DIGEST_MAX_LENGTH 64
#define TCPA_PCR_HASH_NAME 256
struct tcpa_entry {
uint32_t pcr;
uint8_t digest[TCPA_DIGEST_MAX_LENGTH];
uint32_t digest_length;
uint8_t name[TCPA_PCR_HASH_NAME];
} __packed;
struct tcpa_table {
uint16_t max_entries;
uint16_t num_entries;
struct tcpa_entry entries[0]; /* Variable number of entries */
} __packed;
#endif