efi_event.h
/* SPDX-License-Identifier: BSD-2-Clause */
#ifndef TCG_EFI_EVENT_H
#define TCG_EFI_EVENT_H 1
#include <uuid/uuid.h>
#include <uchar.h>
#include "tss2_tpm2_types.h"
/*
* Log event types. These are spread out over 2 specs:
* "TCG EFI Protocol Specification For TPM Family 1.1 or 1.2" and
* "TCG PC Client Specific Implementation Specification for Conventional BIOS"
*/
#define EV_PREBOOT_CERT 0x0
#define EV_POST_CODE 0x1
#define EV_UNUSED 0x2
#define EV_NO_ACTION 0x3
#define EV_SEPARATOR 0x4
#define EV_ACTION 0x5
#define EV_EVENT_TAG 0x6
#define EV_S_CRTM_CONTENTS 0x7
#define EV_S_CRTM_VERSION 0x8
#define EV_CPU_MICROCODE 0x9
#define EV_PLATFORM_CONFIG_FLAGS 0xa
#define EV_TABLE_OF_DEVICES 0xb
#define EV_COMPACT_HASH 0xc
#define EV_IPL 0xd
#define EV_IPL_PARTITION_DATA 0xe
#define EV_NONHOST_CODE 0xf
#define EV_NONHOST_CONFIG 0x10
#define EV_NONHOST_INFO 0x11
#define EV_OMIT_BOOT_DEVICE_EVENTS 0x12
/* TCG EFI Platform Specification For TPM Family 1.1 or 1.2 */
#define EV_EFI_EVENT_BASE 0x80000000
#define EV_EFI_VARIABLE_DRIVER_CONFIG EV_EFI_EVENT_BASE + 0x1
#define EV_EFI_VARIABLE_BOOT EV_EFI_EVENT_BASE + 0x2
#define EV_EFI_BOOT_SERVICES_APPLICATION EV_EFI_EVENT_BASE + 0x3
#define EV_EFI_BOOT_SERVICES_DRIVER EV_EFI_EVENT_BASE + 0x4
#define EV_EFI_RUNTIME_SERVICES_DRIVER EV_EFI_EVENT_BASE + 0x5
#define EV_EFI_GPT_EVENT EV_EFI_EVENT_BASE + 0x6
#define EV_EFI_ACTION EV_EFI_EVENT_BASE + 0x7
#define EV_EFI_PLATFORM_FIRMWARE_BLOB EV_EFI_EVENT_BASE + 0x8
#define EV_EFI_HANDOFF_TABLES EV_EFI_EVENT_BASE + 0x9
#define EV_EFI_HCRTM_EVENT EV_EFI_EVENT_BASE + 0x10
#define EV_EFI_VARIABLE_AUTHORITY EV_EFI_EVENT_BASE + 0xe0
#ifndef PACKED
#define PACKED __attribute__((__packed__))
#endif
typedef struct {
UINT16 AlgorithmId;
UINT8 Digest[];
} PACKED TCG_DIGEST2;
typedef struct {
UINT32 EventSize;
UINT8 Event [];
} PACKED TCG_EVENT2;
typedef struct {
UINT32 PCRIndex;
UINT32 EventType;
UINT32 DigestCount;
TCG_DIGEST2 Digests [];
/* TCG_EVENT2 comes next */
} PACKED TCG_EVENT_HEADER2;
/* Helper structure for dealing with unaligned char16_t */
typedef struct {
char16_t c;
} PACKED UTF16_CHAR;
typedef struct {
uuid_t VariableName;
UINT64 UnicodeNameLength;
UINT64 VariableDataLength;
char16_t UnicodeName[];
/* INT8 VariableData[] comes next */
} PACKED UEFI_VARIABLE_DATA;
typedef UINT64 UEFI_PHYSICAL_ADDRESS;
typedef struct {
UEFI_PHYSICAL_ADDRESS BlobBase;
UINT64 BlobLength;
} PACKED UEFI_PLATFORM_FIRMWARE_BLOB;
typedef struct {
UINT32 pcrIndex;
UINT32 eventType;
BYTE digest[20];
UINT32 eventDataSize;
BYTE event[];
} PACKED TCG_EVENT;
typedef struct {
UINT16 algorithmId;
UINT16 digestSize;
} PACKED TCG_SPECID_ALG;
typedef struct {
UINT8 vendorInfoSize;
BYTE vendorInfo[];
} PACKED TCG_VENDOR_INFO;
typedef struct {
BYTE Signature[16];
UINT32 platformClass;
UINT8 specVersionMinor;
UINT8 specVersionMajor;
UINT8 specErrata;
UINT8 uintnSize;
UINT32 numberOfAlgorithms;
TCG_SPECID_ALG digestSizes[];
/* then TCG_VendorStuff */
} PACKED TCG_SPECID_EVENT;
typedef struct {
UEFI_PHYSICAL_ADDRESS ImageLocationInMemory;
UINT64 ImageLengthInMemory;
UINT64 ImageLinkTimeAddress;
UINT64 LengthOfDevicePath;
BYTE DevicePath[];
} PACKED UEFI_IMAGE_LOAD_EVENT;
/*
* EV_NO_ACTION_STRUCT is the structure of an EV_NO_ACTION event.
* Described in TCG PCClient PFP section 9.4.5.
* The Signature identifies which arm of the union applies.
*/
typedef struct {
BYTE Signature[16];
union {
BYTE StartupLocality;
} Cases;
} PACKED EV_NO_ACTION_STRUCT;
static const BYTE STARTUP_LOCALITY_SIGNATURE[16] = {0x53, 0x74, 0x61, 0x72, 0x74, 0x75, 0x70, 0x4C,
0x6F, 0x63, 0x61, 0x6C, 0x69, 0x74, 0x79, 0};
#endif