include/linux/tpm_eventlog.h

   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
  22 enum bios_platform_class {
  23         BIOS_CLIENT = 0x00,
  24         BIOS_SERVER = 0x01,
  25 };
  26
  27 struct 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
  35 enum 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
  56 struct tcpa_pc_event {
  57         u32 event_id;
  58         u32 event_size;
  59         u8 event_data[0];
  60 };
  61
  62 enum 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
  80 struct tcg_efi_specid_event_algs {
  81         u16 alg_id;
  82         u16 digest_size;
  83 } __packed;
  84
  85 struct 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
  98 struct 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
 106 struct tcg_event_field {
 107         u32 event_size;
 108         u8 event[0];
 109 } __packed;
 110
 111 struct tpm2_digest {
 112         u16 alg_id;
 113         u8 digest[SHA512_DIGEST_SIZE];
 114 } __packed;
 115
 116 struct 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