drivers/char/tpm/tpm_eventlog.h

   1
   2 #ifndef __TPM_EVENTLOG_H__
   3 #define __TPM_EVENTLOG_H__
   4
   5 #include <crypto/hash_info.h>
   6
   7 #define TCG_EVENT_NAME_LEN_MAX  255
   8 #define MAX_TEXT_EVENT          1000    /* Max event string length */
   9 #define ACPI_TCPA_SIG           "TCPA"  /* 0x41504354 /'TCPA' */
  10 #define TPM2_ACTIVE_PCR_BANKS   3
  11
  12 #ifdef CONFIG_PPC64
  13 #define do_endian_conversion(x) be32_to_cpu(x)
  14 #else
  15 #define do_endian_conversion(x) x
  16 #endif
  17
  18 enum bios_platform_class {
  19         BIOS_CLIENT = 0x00,
  20         BIOS_SERVER = 0x01,
  21 };
  22
  23 struct tcpa_event {
  24         u32 pcr_index;
  25         u32 event_type;
  26         u8 pcr_value[20];       /* SHA1 */
  27         u32 event_size;
  28         u8 event_data[0];
  29 };
  30
  31 enum tcpa_event_types {
  32         PREBOOT = 0,
  33         POST_CODE,
  34         UNUSED,
  35         NO_ACTION,
  36         SEPARATOR,
  37         ACTION,
  38         EVENT_TAG,
  39         SCRTM_CONTENTS,
  40         SCRTM_VERSION,
  41         CPU_MICROCODE,
  42         PLATFORM_CONFIG_FLAGS,
  43         TABLE_OF_DEVICES,
  44         COMPACT_HASH,
  45         IPL,
  46         IPL_PARTITION_DATA,
  47         NONHOST_CODE,
  48         NONHOST_CONFIG,
  49         NONHOST_INFO,
  50 };
  51
  52 struct tcpa_pc_event {
  53         u32 event_id;
  54         u32 event_size;
  55         u8 event_data[0];
  56 };
  57
  58 enum tcpa_pc_event_ids {
  59         SMBIOS = 1,
  60         BIS_CERT,
  61         POST_BIOS_ROM,
  62         ESCD,
  63         CMOS,
  64         NVRAM,
  65         OPTION_ROM_EXEC,
  66         OPTION_ROM_CONFIG,
  67         OPTION_ROM_MICROCODE = 10,
  68         S_CRTM_VERSION,
  69         S_CRTM_CONTENTS,
  70         POST_CONTENTS,
  71         HOST_TABLE_OF_DEVICES,
  72 };
  73
  74 /* http://www.trustedcomputinggroup.org/tcg-efi-protocol-specification/ */
  75
  76 struct tcg_efi_specid_event_algs {
  77         u16 alg_id;
  78         u16 digest_size;
  79 } __packed;
  80
  81 struct tcg_efi_specid_event {
  82         u8 signature[16];
  83         u32 platform_class;
  84         u8 spec_version_minor;
  85         u8 spec_version_major;
  86         u8 spec_errata;
  87         u8 uintnsize;
  88         u32 num_algs;
  89         struct tcg_efi_specid_event_algs digest_sizes[TPM2_ACTIVE_PCR_BANKS];
  90         u8 vendor_info_size;
  91         u8 vendor_info[0];
  92 } __packed;
  93
  94 struct tcg_pcr_event {
  95         u32 pcr_idx;
  96         u32 event_type;
  97         u8 digest[20];
  98         u32 event_size;
  99         u8 event[0];
 100 } __packed;
 101
 102 struct tcg_event_field {
 103         u32 event_size;
 104         u8 event[0];
 105 } __packed;
 106
 107 struct tcg_pcr_event2 {
 108         u32 pcr_idx;
 109         u32 event_type;
 110         u32 count;
 111         struct tpm2_digest digests[TPM2_ACTIVE_PCR_BANKS];
 112         struct tcg_event_field event;
 113 } __packed;
 114
 115 extern const struct seq_operations tpm2_binary_b_measurements_seqops;
 116
 117 #if defined(CONFIG_ACPI)
 118 int tpm_read_log_acpi(struct tpm_chip *chip);
 119 #else
 120 static inline int tpm_read_log_acpi(struct tpm_chip *chip)
 121 {
 122         return -ENODEV;
 123 }
 124 #endif
 125 #if defined(CONFIG_OF)
 126 int tpm_read_log_of(struct tpm_chip *chip);
 127 #else
 128 static inline int tpm_read_log_of(struct tpm_chip *chip)
 129 {
 130         return -ENODEV;
 131 }
 132 #endif
 133
 134 int tpm_bios_log_setup(struct tpm_chip *chip);
 135 void tpm_bios_log_teardown(struct tpm_chip *chip);
 136
 137 #endif