1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef __TPM_EVENTLOG_H__
4 #define __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 #ifdef CONFIG_PPC64
14 #define do_endian_conversion(x) be32_to_cpu(x)
15 #else
16 #define do_endian_conversion(x) x
17 #endif
18
19 enum bios_platform_class {
20 BIOS_CLIENT = 0x00,
21 BIOS_SERVER = 0x01,
22 };
23
24 struct tcpa_event {
25 u32 pcr_index;
26 u32 event_type;
27 u8 pcr_value[20]; /* SHA1 */
28 u32 event_size;
29 u8 event_data[0];
30 };
31
32 enum tcpa_event_types {
33 PREBOOT = 0,
34 POST_CODE,
35 UNUSED,
36 NO_ACTION,
37 SEPARATOR,
38 ACTION,
39 EVENT_TAG,
40 SCRTM_CONTENTS,
41 SCRTM_VERSION,
42 CPU_MICROCODE,
43 PLATFORM_CONFIG_FLAGS,
44 TABLE_OF_DEVICES,
45 COMPACT_HASH,
46 IPL,
47 IPL_PARTITION_DATA,
48 NONHOST_CODE,
49 NONHOST_CONFIG,
50 NONHOST_INFO,
51 };
52
53 struct tcpa_pc_event {
54 u32 event_id;
55 u32 event_size;
56 u8 event_data[0];
57 };
58
59 enum tcpa_pc_event_ids {
60 SMBIOS = 1,
61 BIS_CERT,
62 POST_BIOS_ROM,
63 ESCD,
64 CMOS,
65 NVRAM,
66 OPTION_ROM_EXEC,
67 OPTION_ROM_CONFIG,
68 OPTION_ROM_MICROCODE = 10,
69 S_CRTM_VERSION,
70 S_CRTM_CONTENTS,
71 POST_CONTENTS,
72 HOST_TABLE_OF_DEVICES,
73 };
74
75 /* http://www.trustedcomputinggroup.org/tcg-efi-protocol-specification/ */
76
77 struct tcg_efi_specid_event_algs {
78 u16 alg_id;
79 u16 digest_size;
80 } __packed;
81
82 struct tcg_efi_specid_event {
83 u8 signature[16];
84 u32 platform_class;
85 u8 spec_version_minor;
86 u8 spec_version_major;
87 u8 spec_errata;
88 u8 uintnsize;
89 u32 num_algs;
90 struct tcg_efi_specid_event_algs digest_sizes[TPM2_ACTIVE_PCR_BANKS];
91 u8 vendor_info_size;
92 u8 vendor_info[0];
93 } __packed;
94
95 struct tcg_pcr_event {
96 u32 pcr_idx;
97 u32 event_type;
98 u8 digest[20];
99 u32 event_size;
100 u8 event[0];
101 } __packed;
102
103 struct tcg_event_field {
104 u32 event_size;
105 u8 event[0];
106 } __packed;
107
108 struct tcg_pcr_event2 {
109 u32 pcr_idx;
110 u32 event_type;
111 u32 count;
112 struct tpm2_digest digests[TPM2_ACTIVE_PCR_BANKS];
113 struct tcg_event_field event;
114 } __packed;
115
116 extern const struct seq_operations tpm2_binary_b_measurements_seqops;
117
118 #if defined(CONFIG_ACPI)
119 int tpm_read_log_acpi(struct tpm_chip *chip);
120 #else
tpm_read_log_acpi(struct tpm_chip * chip)121 static inline int tpm_read_log_acpi(struct tpm_chip *chip)
122 {
123 return -ENODEV;
124 }
125 #endif
126 #if defined(CONFIG_OF)
127 int tpm_read_log_of(struct tpm_chip *chip);
128 #else
tpm_read_log_of(struct tpm_chip * chip)129 static inline int tpm_read_log_of(struct tpm_chip *chip)
130 {
131 return -ENODEV;
132 }
133 #endif
134
135 int tpm_bios_log_setup(struct tpm_chip *chip);
136 void tpm_bios_log_teardown(struct tpm_chip *chip);
137
138 #endif
139