1 files changed, 94 insertions, 0 deletions
diff --git a/include/efi_tcg2.h b/include/efi_tcg2.h
new file mode 100644
index 00000000000..4214f767eab
--- /dev/null
+++ b/include/efi_tcg2.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Defines data structures and APIs that allow an OS to interact with UEFI
+ * firmware to query information about the device
+ *
+ * Copyright (c) 2020, Linaro Limited
+ */
+
+#if !defined _EFI_TCG2_PROTOCOL_H_
+#define _EFI_TCG2_PROTOCOL_H_
+
+#include <tpm-v2.h>
+
+#define EFI_TCG2_PROTOCOL_GUID \
+	EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, \
+		 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f)
+
+/* TPMV2 only */
+#define TCG2_EVENT_LOG_FORMAT_TCG_2 0x00000002
+
+/* SHA1, SHA256, SHA384, SHA512, TPM_ALG_SM3_256 */
+#define MAX_HASH_COUNT 5
+/* Algorithm Registry */
+#define EFI_TCG2_BOOT_HASH_ALG_SHA1    0x00000001
+#define EFI_TCG2_BOOT_HASH_ALG_SHA256  0x00000002
+#define EFI_TCG2_BOOT_HASH_ALG_SHA384  0x00000004
+#define EFI_TCG2_BOOT_HASH_ALG_SHA512  0x00000008
+#define EFI_TCG2_BOOT_HASH_ALG_SM3_256 0x00000010
+
+typedef u32 efi_tcg_event_log_bitmap;
+typedef u32 efi_tcg_event_log_format;
+typedef u32 efi_tcg_event_algorithm_bitmap;
+
+struct efi_tcg2_version {
+	u8 major;
+	u8 minor;
+};
+
+struct efi_tcg2_event_header {
+	u32 header_size;
+	u16 header_version;
+	u32 pcr_index;
+	u32 event_type;
+} __packed;
+
+struct efi_tcg2_event {
+	u32 size;
+	struct efi_tcg2_event_header header;
+	u8 event[];
+} __packed;
+
+struct efi_tcg2_boot_service_capability {
+	u8 size;
+	struct efi_tcg2_version structure_version;
+	struct efi_tcg2_version protocol_version;
+	efi_tcg_event_algorithm_bitmap hash_algorithm_bitmap;
+	efi_tcg_event_log_bitmap supported_event_logs;
+	u8 tpm_present_flag;
+	u16 max_command_size;
+	u16 max_response_size;
+	u32 manufacturer_id;
+	u32 number_of_pcr_banks;
+	efi_tcg_event_algorithm_bitmap active_pcr_banks;
+};
+
+#define boot_service_capability_min \
+	sizeof(struct efi_tcg2_boot_service_capability) - \
+	offsetof(struct efi_tcg2_boot_service_capability, number_of_pcr_banks)
+
+struct efi_tcg2_protocol {
+	efi_status_t (EFIAPI * get_capability)(struct efi_tcg2_protocol *this,
+					       struct efi_tcg2_boot_service_capability *capability);
+	efi_status_t (EFIAPI * get_eventlog)(struct efi_tcg2_protocol *this,
+					     efi_tcg_event_log_format log_format,
+					     u64 *event_log_location, u64 *event_log_last_entry,
+					     bool *event_log_truncated);
+	efi_status_t (EFIAPI * hash_log_extend_event)(struct efi_tcg2_protocol *this,
+						      u64 flags, u64 data_to_hash,
+						      u64 data_to_hash_len,
+						      struct efi_tcg2_event *efi_tcg_event);
+	efi_status_t (EFIAPI * submit_command)(struct efi_tcg2_protocol *this,
+					       u32 input_parameter_block_size,
+					       u8 *input_parameter_block,
+					       u32 output_parameter_block_size,
+					       u8 *output_parameter_block);
+	efi_status_t (EFIAPI * get_active_pcr_banks)(struct efi_tcg2_protocol *this,
+						     u32 *active_pcr_banks);
+	efi_status_t (EFIAPI * set_active_pcr_banks)(struct efi_tcg2_protocol *this,
+						     u32 active_pcr_banks);
+	efi_status_t (EFIAPI * get_result_of_set_active_pcr_banks)(struct efi_tcg2_protocol *this,
+								   u32 *operation_present,
+								   u32 *response);
+};
+#endif