tpm_eventlog.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __TPM_EVENTLOG_H__
#define __TPM_EVENTLOG_H__
#include <crypto/hash_info.h>
#define TCG_EVENT_NAME_LEN_MAX 255
#define MAX_TEXT_EVENT 1000 /* Max event string length */
#define ACPI_TCPA_SIG "TCPA" /* 0x41504354 /'TCPA' */
#define TPM2_ACTIVE_PCR_BANKS 3
#ifdef CONFIG_PPC64
#define do_endian_conversion(x) be32_to_cpu(x)
#else
#define do_endian_conversion(x) x
#endif
enum bios_platform_class {
BIOS_CLIENT = 0x00,
BIOS_SERVER = 0x01,
};
struct tcpa_event {
u32 pcr_index;
u32 event_type;
u8 pcr_value[20]; /* SHA1 */
u32 event_size;
u8 event_data[0];
};
enum tcpa_event_types {
PREBOOT = 0,
POST_CODE,
UNUSED,
NO_ACTION,
SEPARATOR,
ACTION,
EVENT_TAG,
SCRTM_CONTENTS,
SCRTM_VERSION,
CPU_MICROCODE,
PLATFORM_CONFIG_FLAGS,
TABLE_OF_DEVICES,
COMPACT_HASH,
IPL,
IPL_PARTITION_DATA,
NONHOST_CODE,
NONHOST_CONFIG,
NONHOST_INFO,
};
struct tcpa_pc_event {
u32 event_id;
u32 event_size;
u8 event_data[0];
};
enum tcpa_pc_event_ids {
SMBIOS = 1,
BIS_CERT,
POST_BIOS_ROM,
ESCD,
CMOS,
NVRAM,
OPTION_ROM_EXEC,
OPTION_ROM_CONFIG,
OPTION_ROM_MICROCODE = 10,
S_CRTM_VERSION,
S_CRTM_CONTENTS,
POST_CONTENTS,
HOST_TABLE_OF_DEVICES,
};
/* http://www.trustedcomputinggroup.org/tcg-efi-protocol-specification/ */
struct tcg_efi_specid_event_algs {
u16 alg_id;
u16 digest_size;
} __packed;
struct tcg_efi_specid_event {
u8 signature[16];
u32 platform_class;
u8 spec_version_minor;
u8 spec_version_major;
u8 spec_errata;
u8 uintnsize;
u32 num_algs;
struct tcg_efi_specid_event_algs digest_sizes[TPM2_ACTIVE_PCR_BANKS];
u8 vendor_info_size;
u8 vendor_info[0];
} __packed;
struct tcg_pcr_event {
u32 pcr_idx;
u32 event_type;
u8 digest[20];
u32 event_size;
u8 event[0];
} __packed;
struct tcg_event_field {
u32 event_size;
u8 event[0];
} __packed;
struct tcg_pcr_event2 {
u32 pcr_idx;
u32 event_type;
u32 count;
struct tpm2_digest digests[TPM2_ACTIVE_PCR_BANKS];
struct tcg_event_field event;
} __packed;
extern const struct seq_operations tpm2_binary_b_measurements_seqops;
#if defined(CONFIG_ACPI)
int tpm_read_log_acpi(struct tpm_chip *chip);
#else
static inline int tpm_read_log_acpi(struct tpm_chip *chip)
{
return -ENODEV;
}
#endif
#if defined(CONFIG_OF)
int tpm_read_log_of(struct tpm_chip *chip);
#else
static inline int tpm_read_log_of(struct tpm_chip *chip)
{
return -ENODEV;
}
#endif
int tpm_bios_log_setup(struct tpm_chip *chip);
void tpm_bios_log_teardown(struct tpm_chip *chip);
#endif