LXR linux/include/linux/tpm

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef __LINUX_TPM_EVENTLOG_H__
   4#define __LINUX_TPM_EVENTLOG_H__
   5
   6#include <crypto/hash_info.h>
   7
   8#define TCG_EVENT_NAME_LEN_MAX  255
   9#define MAX_TEXT_EVENT          1000    /* Max event string length */
  10#define ACPI_TCPA_SIG           "TCPA"  /* 0x41504354 /'TCPA' */
  11#define TPM2_ACTIVE_PCR_BANKS   3
  12
  13#define EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 0x1
  14#define EFI_TCG2_EVENT_LOG_FORMAT_TCG_2   0x2
  15
  16#ifdef CONFIG_PPC64
  17#define do_endian_conversion(x) be32_to_cpu(x)
  18#else
  19#define do_endian_conversion(x) x
  20#endif
  21
  22enum bios_platform_class {
  23        BIOS_CLIENT = 0x00,
  24        BIOS_SERVER = 0x01,
  25};
  26
  27struct tcpa_event {
  28        u32 pcr_index;
  29        u32 event_type;
  30        u8 pcr_value[20];       /* SHA1 */
  31        u32 event_size;
  32        u8 event_data[0];
  33};
  34
  35enum tcpa_event_types {
  36        PREBOOT = 0,
  37        POST_CODE,
  38        UNUSED,
  39        NO_ACTION,
  40        SEPARATOR,
  41        ACTION,
  42        EVENT_TAG,
  43        SCRTM_CONTENTS,
  44        SCRTM_VERSION,
  45        CPU_MICROCODE,
  46        PLATFORM_CONFIG_FLAGS,
  47        TABLE_OF_DEVICES,
  48        COMPACT_HASH,
  49        IPL,
  50        IPL_PARTITION_DATA,
  51        NONHOST_CODE,
  52        NONHOST_CONFIG,
  53        NONHOST_INFO,
  54};
  55
  56struct tcpa_pc_event {
  57        u32 event_id;
  58        u32 event_size;
  59        u8 event_data[0];
  60};
  61
  62enum tcpa_pc_event_ids {
  63        SMBIOS = 1,
  64        BIS_CERT,
  65        POST_BIOS_ROM,
  66        ESCD,
  67        CMOS,
  68        NVRAM,
  69        OPTION_ROM_EXEC,
  70        OPTION_ROM_CONFIG,
  71        OPTION_ROM_MICROCODE = 10,
  72        S_CRTM_VERSION,
  73        S_CRTM_CONTENTS,
  74        POST_CONTENTS,
  75        HOST_TABLE_OF_DEVICES,
  76};
  77
  78/* http://www.trustedcomputinggroup.org/tcg-efi-protocol-specification/ */
  79
  80struct tcg_efi_specid_event_algs {
  81        u16 alg_id;
  82        u16 digest_size;
  83} __packed;
  84
  85struct tcg_efi_specid_event {
  86        u8 signature[16];
  87        u32 platform_class;
  88        u8 spec_version_minor;
  89        u8 spec_version_major;
  90        u8 spec_errata;
  91        u8 uintnsize;
  92        u32 num_algs;
  93        struct tcg_efi_specid_event_algs digest_sizes[TPM2_ACTIVE_PCR_BANKS];
  94        u8 vendor_info_size;
  95        u8 vendor_info[0];
  96} __packed;
  97
  98struct tcg_pcr_event {
  99        u32 pcr_idx;
 100        u32 event_type;
 101        u8 digest[20];
 102        u32 event_size;
 103        u8 event[0];
 104} __packed;
 105
 106struct tcg_event_field {
 107        u32 event_size;
 108        u8 event[0];
 109} __packed;
 110
 111struct tpm2_digest {
 112        u16 alg_id;
 113        u8 digest[SHA512_DIGEST_SIZE];
 114} __packed;
 115
 116struct tcg_pcr_event2 {
 117        u32 pcr_idx;
 118        u32 event_type;
 119        u32 count;
 120        struct tpm2_digest digests[TPM2_ACTIVE_PCR_BANKS];
 121        struct tcg_event_field event;
 122} __packed;
 123
 124#endif
 125