blob: 96375aba5bb8ac6b94146d43689d618bed5e22ed [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Intel Corporation
* Copyright (C) 2018-2019 Eltan B.V.
*
* 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 MBOOT_H
#define MBOOT_H
#include <arch/io.h>
#include <arch/acpi.h>
#include <string.h>
#include <cb_sha.h>
#include <console/console.h>
#include <cbfs.h>
#include <lib.h>
#include <boot/coreboot_tables.h>
#include <security/tpm/tss/tcg-2.0/tss_structures.h>
#include <security/tpm/tss.h>
#include <swab.h>
/* TPM2 interface */
#define EFI_TPM2_ACPI_TABLE_START_METHOD_TIS 6
#define TPM_SHA1_160_HASH_LEN 0x14
/* Part 2, section 5.4: TPM_DIGEST */
/* Index to a PCR register */
typedef uint32_t TPM_PCRINDEX;
typedef uint32_t TCG_EVENTTYPE;
typedef TPM_PCRINDEX TCG_PCRINDEX;
typedef int8_t TCG_DIGEST;
/* TCG_PCR_EVENT_HDR */
typedef struct {
TCG_PCRINDEX pcrIndex;
TCG_EVENTTYPE eventType;
TCG_DIGEST digest[TPM_SHA1_160_HASH_LEN];
uint32_t eventSize;
} __packed TCG_PCR_EVENT_HDR;
/* TCG_PCR_EVENT2_HDR */
typedef struct {
TCG_PCRINDEX pcrIndex;
TCG_EVENTTYPE eventType;
TPML_DIGEST_VALUES digest;
uint32_t eventSize;
} __packed TCG_PCR_EVENT2_HDR;
typedef uint32_t EFI_TCG2_EVENT_ALGORITHM_BITMAP;
#define EFI_TCG2_BOOT_HASH_ALG_SHA1 0x00000001
#define EFI_TCG2_BOOT_HASH_ALG_SHA256 0x00000002
#define EFI_TCG2_BOOT_HASH_ALG_SHA384 0x00000004
#define EFI_TCG2_BOOT_HASH_ALG_SHA512 0x00000008
#define EFI_TCG2_BOOT_HASH_ALG_SM3_256 0x00000010
/* Standard event types */
#define EV_POST_CODE ((TCG_EVENTTYPE) 0x00000001)
#define EV_NO_ACTION ((TCG_EVENTTYPE) 0x00000003)
#define EV_SEPARATOR ((TCG_EVENTTYPE) 0x00000004)
#define EV_S_CRTM_CONTENTS ((TCG_EVENTTYPE) 0x00000007)
#define EV_S_CRTM_VERSION ((TCG_EVENTTYPE) 0x00000008)
#define EV_CPU_MICROCODE ((TCG_EVENTTYPE) 0x00000009)
#define EV_TABLE_OF_DEVICES ((TCG_EVENTTYPE) 0x0000000B)
#define MBOOT_PCR_INDEX_0 0x0
#define MBOOT_PCR_INDEX_1 0x1
#define MBOOT_PCR_INDEX_2 0x2
#define MBOOT_PCR_INDEX_3 0x3
#define MBOOT_PCR_INDEX_4 0x4
#define MBOOT_PCR_INDEX_5 0x5
#define MBOOT_PCR_INDEX_6 0x6
#define MBOOT_PCR_INDEX_7 0x7
/*
* used to indicate a hash is provide so there is no need to perform the
* measurement
*/
#define MBOOT_HASH_PROVIDED (0x00000001)
int is_zero_buffer(void *buffer, unsigned int size);
int mboot_hash_extend_log(EFI_TCG2_EVENT_ALGORITHM_BITMAP activePcr,
uint64_t flags, uint8_t *hashData, uint32_t hashDataLen,
TCG_PCR_EVENT2_HDR *newEventHdr, uint8_t *eventLog, uint8_t invalid);
void mboot_print_buffer(uint8_t *buffer, uint32_t bufferSize);
int mb_crtm(EFI_TCG2_EVENT_ALGORITHM_BITMAP activePcr);
typedef struct {
const char *cbfs_name;
uint32_t cbfs_type;
uint32_t pcr;
TCG_EVENTTYPE eventType;
const char *event_msg;
} mboot_measure_item_t;
int mb_measure_log_worker(EFI_TCG2_EVENT_ALGORITHM_BITMAP activePcr,
const char *name, uint32_t type, uint32_t pcr,
TCG_EVENTTYPE eventType, const char *event_msg);
int mb_measure_log_start(void);
void invalidate_pcrs(void);
EFI_TCG2_EVENT_ALGORITHM_BITMAP tpm2_get_active_pcrs(void);
int tpm2_get_capability_pcrs(TPML_PCR_SELECTION *Pcrs);
int mb_measure(int wake_from_s3);
int mb_entry(int wake_from_s3);
int log_efi_specid_event(EFI_TCG2_EVENT_ALGORITHM_BITMAP ActivePcrs);
int log_event_tcg_20_format(TCG_PCR_EVENT2_HDR *EventHdr, uint8_t *EventLog);
int log_event_tcg_12_format(TCG_PCR_EVENT2_HDR *EventHdr, uint8_t *EventLog);
int get_intel_me_hash(uint8_t *hash);
#endif /* MBOOT_H */