From 4787be0c2f1c13552b080c35bc8d294f19c300a0 Mon Sep 17 00:00:00 2001
From: jinlun <jinlun@huawei.com>
Date: Tue, 28 Feb 2023 19:50:44 +0800
Subject: [PATCH] add tpcm support with ipmi channel

---
 Makefile |   4 +-
 shim.c   |   9 +-
 tpcm.c   | 299 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tpcm.h   | 195 ++++++++++++++++++++++++++++++++++++
 4 files changed, 503 insertions(+), 4 deletions(-)
 create mode 100644 tpcm.c
 create mode 100644 tpcm.h

diff --git a/Makefile b/Makefile
index 115e7f0..795be0f 100644
--- a/Makefile
+++ b/Makefile
@@ -33,9 +33,9 @@ CFLAGS += -DENABLE_SHIM_CERT
 else
 TARGETS += $(MMNAME) $(FBNAME)
 endif
-OBJS	= shim.o mok.o netboot.o cert.o replacements.o tpm.o version.o errlog.o
+OBJS	= shim.o mok.o netboot.o cert.o replacements.o tpm.o version.o errlog.o tpcm.o
 KEYS	= shim_cert.h ocsp.* ca.* shim.crt shim.csr shim.p12 shim.pem shim.key shim.cer
-ORIG_SOURCES	= shim.c mok.c netboot.c replacements.c tpm.c errlog.c shim.h version.h $(wildcard include/*.h)
+ORIG_SOURCES	= shim.c mok.c netboot.c replacements.c tpm.c errlog.c shim.h version.h $(wildcard include/*.h) tpcm.h
 MOK_OBJS = MokManager.o PasswordCrypt.o crypt_blowfish.o
 ORIG_MOK_SOURCES = MokManager.c PasswordCrypt.c crypt_blowfish.c shim.h $(wildcard include/*.h)
 FALLBACK_OBJS = fallback.o tpm.o errlog.o
diff --git a/shim.c b/shim.c
index c81d7ea..0119a69 100644
--- a/shim.c
+++ b/shim.c
@@ -51,7 +51,7 @@
 #include <Library/BaseCryptLib.h>
 
 #include <stdint.h>
-
+#include "tpcm.h"
 #define OID_EKU_MODSIGN "1.3.6.1.4.1.2312.16.1.2"
 
 static EFI_SYSTEM_TABLE *systab;
@@ -1899,7 +1899,12 @@ EFI_STATUS start_image(EFI_HANDLE image_handle, CHAR16 *ImagePath)
 		efi_status = EFI_INVALID_PARAMETER;
 		goto done;
 	}
-
+	efi_status = tpcm_ipmi_write(ImagePath, data, datasize,image_handle);
+	if (EFI_ERROR(efi_status)) {
+		PrintErrors();
+		ClearErrors();
+		goto done;
+	}
 	/*
 	 * We need to modify the loaded image protocol entry before running
 	 * the new binary, so back it up
diff --git a/tpcm.c b/tpcm.c
new file mode 100644
index 0000000..358fe6d
--- /dev/null
+++ b/tpcm.c
@@ -0,0 +1,299 @@
+#include "tpcm.h"
+#include "shim.h"
+
+#define TRANS(value)  ((((UINT32)value <<24 )&0xFF000000)|(((UINT32)value<<8)&0x00FF0000)|(((UINT32)value>>8)&0x0000FF00)|(((UINT32)value>>24)&0x000000FF))
+
+static EFI_GUID hash2_service_binding_guid = SHIM_EFI_HASH2_SERVICE_BINDING_PROTOCOL_GUID;
+static EFI_GUID hash2_guid = SHIM_EFI_HASH2_PROTOCOL_GUID;
+static EFI_GUID sm3_guid = SHIM_HASH_ALGORITHM_SM3_GUID;
+static EFI_GUID gIpmiInterfaceProtocolGuid = EFI_TPCM_GUID;
+
+static shim_efi_ipmi_interface_protocol_t *tpcm_ipmi;
+static UINT32 bm_stage_base = 1500;
+
+static void httc_util_dump_hex (const CHAR16 *name, void *p, int bytes)
+{
+
+        int i = 0;
+        char *data = p;
+        int add_newline = 1;
+        console_print(L"%s length=%d:\n", name, bytes);
+        if (bytes != 0) {
+                console_print(L"%02x ", (unsigned char)data[i]);
+                i++;
+        }
+        while (i < bytes) {
+            console_print(L"%02x ", (unsigned char)data[i]);
+            i++;
+            if (i % 16 == 0) {
+                console_print(L"\n");
+                add_newline = 0;
+            } else {
+                add_newline = 1;
+            }
+        }
+        if (add_newline) {
+            console_print(L"\n");
+        }
+}
+
+static EFI_HANDLE
+shim_efi_service_binding (EFI_GUID *service_binding_guid, EFI_HANDLE image_handle)
+{
+    EFI_SERVICE_BINDING *service;
+    EFI_STATUS efi_status;
+    EFI_HANDLE child_dev = NULL;
+
+    efi_status = LibLocateProtocol(service_binding_guid, (VOID **) &service);
+    if (EFI_ERROR(efi_status)) {
+        console_print(L"LibLocateProtocol failed\n");
+		return NULL;
+    }
+    if (!service) {
+        console_print(L"couldn't open efi service binding protocol\n");
+        return NULL;
+    }
+	efi_status = service->CreateChild(service, &child_dev);
+	if (EFI_ERROR(efi_status)) {
+        console_print(L"Failed to create child device of http service %x\n", efi_status);
+        return NULL;
+	}
+    return child_dev;
+}
+
+static EFI_STATUS
+shim_efi_hash (unsigned char *buf, size_t size, EFI_HANDLE image_handle, unsigned char *content)
+{
+    EFI_STATUS efi_status = EFI_SUCCESS;
+    shim_efi_hash2_protocol_t *hash2;
+    EFI_HANDLE hash_handle = NULL;
+    unsigned char output[DEFAULT_HASH_SIZE] = {0};
+    console_print(L"shim_efi_hash binding service.\n");
+    hash_handle = shim_efi_service_binding (&hash2_service_binding_guid, image_handle);
+    if (!hash_handle) {
+        console_print(L"hash2 service binding failed.\n");
+        return EFI_INVALID_PARAMETER;
+    }
+    console_print(L"shim_efi_hash binding service success.\n");
+
+    efi_status = gBS->OpenProtocol(hash_handle, &hash2_guid,
+				                   (VOID **) &hash2, image_handle, NULL,
+				                   EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+	if (EFI_ERROR(efi_status)) {
+        console_print(L"shim_efi_hash: gBS->OpenProtocol fail\n");
+		return efi_status;
+    }
+    if (!hash2) {
+        console_print(L"hash2 protocol open failed.\n");
+        return EFI_INVALID_PARAMETER;
+    }
+    console_print(L"shim_efi_hash get protocol success.\n");
+    efi_status = hash2->hash_init(hash2, &sm3_guid);
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"hash_init failed.\n");
+        return efi_status;
+    }
+    efi_status = hash2->hash_update(hash2, buf, size);
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"hash_update failed.\n");
+        return efi_status;
+    }
+    efi_status = hash2->hash_final(hash2, (shim_efi_hash2_output *)output);
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"hash_final failed.\n");
+        return efi_status;
+    }
+    httc_util_dump_hex (L"tpcm BIOS hash output: ", output, DEFAULT_HASH_SIZE);
+    memcpy (content, output, DEFAULT_HASH_SIZE);
+    return EFI_SUCCESS;
+}
+
+static BOOLEAN
+shim_tpcm_measure_switch ()
+{
+    EFI_STATUS efi_status = EFI_SUCCESS;
+    shim_ipmi_cmd_header request = {IPMI_BMC_LUN,
+                                    IPMI_NETFN_OEM,
+                                    IPMI_CMD_GET_MEASURE_PARM};
+    OEM_BMC_GET_RESULT_REQUSET get_tpcm_request_value;
+    OEM_BMC_GET_RESULT_RESPONSE get_tpcm_response_value;
+    UINT8 response_length;
+
+    memset(&get_tpcm_request_value, 0, sizeof(get_tpcm_request_value));
+    memset(&get_tpcm_response_value, 0, sizeof(get_tpcm_response_value));
+    get_tpcm_request_value.OemSignature[0] = 0xDB;
+    get_tpcm_request_value.OemSignature[1] = 0x07;
+    get_tpcm_request_value.OemSignature[2] = 0x00;
+    get_tpcm_request_value.SubCmd = IPMI_SUB_CMD_SWITCH_REQ;
+    get_tpcm_request_value.FirmwareType = IPMI_FW_OS;
+    get_tpcm_request_value.FirmwareDetailType = IPMI_FW_DETAIL_GRUB;
+    response_length = sizeof(OEM_BMC_GET_RESULT_RESPONSE);
+
+    efi_status = tpcm_ipmi->excute_ipmi_cmd(tpcm_ipmi, request, &get_tpcm_request_value,
+                            sizeof(get_tpcm_request_value), &get_tpcm_response_value,
+                            &response_length, NULL);
+
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"ipmi get tpcm switch failed.\n");
+        return FALSE;
+    }
+
+    if (get_tpcm_response_value.ControlResult != IPMI_SWITCH_OPEN) {
+        console_print(L"tpcm switch close, skip measure.\n");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static void
+shim_tpcm_fillup_content (OEM_BMC_MEASURE_REQUSET *request_data, unsigned char *output, CHAR16 *description)
+{
+  UINT32 filename_len = StrLen (description) * 2 + 1;
+  request_data->FirmwareHashContent.uiCmdTag = TRANS (TPCM_TAG_REQ_COMMAND);
+  request_data->FirmwareHashContent.uiCmdLength = TRANS (sizeof (extern_simple_bmeasure_req_st));
+  request_data->FirmwareHashContent.uiCmdCode = TRANS (TPCM_ORD_ExternSimpleBootMeasure);
+  request_data->FirmwareHashContent.uiPcr = TRANS (0);
+
+  UINT32 stage_base = bm_stage_base++;
+  request_data->FirmwareHashContent.uiStage = TRANS (stage_base);
+
+  memcpy ((UINT8 *)(request_data->FirmwareHashContent.uaDigest),
+               output, DEFAULT_HASH_SIZE);
+  request_data->FirmwareHashContent.uiObjLen = TRANS (filename_len);
+
+  memcpy ((UINT8 *)(request_data->FirmwareHashContent.uaObj),
+               description, filename_len);
+  request_data->FirmwareHashContent.uaObj[filename_len - 1] = '\0';
+}
+
+static EFI_STATUS
+shim_tpcm_log_event (unsigned char *buf, size_t size, CHAR16 *description, EFI_HANDLE image_handle)
+{
+    EFI_STATUS efi_status = EFI_SUCCESS;
+    shim_ipmi_cmd_header request = {IPMI_BMC_LUN,
+                                    IPMI_NETFN_OEM,
+                                    IPMI_CMD_GET_MEASURE_PARM};
+    OEM_BMC_MEASURE_REQUSET *request_data = NULL;
+    OEM_BMC_MEASURE_RESPONSE response_data;
+    OEM_BMC_GET_RESULT_REQUSET get_result_request_data;
+    OEM_BMC_GET_RESULT_RESPONSE get_result_response_data;
+
+    unsigned char output[DEFAULT_HASH_SIZE] = {0};
+    UINT8 response_length;
+    UINT16 timeout_ms = SHIM_IPMI_TIMEOUT_MS;
+    UINT32 cmd_len = sizeof(extern_simple_bmeasure_req_st);
+
+    request_data = (OEM_BMC_MEASURE_REQUSET *)malloc(sizeof(OEM_BMC_MEASURE_REQUSET));
+    memset(request_data, 0, sizeof(OEM_BMC_MEASURE_REQUSET));
+    memset(&response_data, 0, sizeof(response_data));
+    memset(&get_result_request_data, 0, sizeof(get_result_request_data));
+    memset(&get_result_response_data, 0, sizeof(get_result_response_data));
+console_print(L"shim start\n");
+    request_data->OemSignature[0] = 0xDB;
+    request_data->OemSignature[1] = 0x07;
+    request_data->OemSignature[2] = 0x00;
+    request_data->SubCmd = IPMI_SUB_CMD_MEASURE_REQ;
+    request_data->FirmwareType = IPMI_FW_SHIM_GRUB;
+    request_data->FirmwareDetailType = IPMI_FW_DETAIL_GRUB;
+    request_data->FirmwareHashAlgorithmType = SM3_HASH;
+    get_result_request_data.FirmwareDetailType = IPMI_FW_DETAIL_GRUB;
+    response_length = sizeof(OEM_BMC_MEASURE_RESPONSE);
+//计算grub度量
+// 是否需要判断
+    //efi_status = get_firmware_hash_content(buf, size, output, image_handle);
+    efi_status = shim_efi_hash (buf, size, image_handle, output);
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"get firmware hash content failed\n");
+        goto out;
+    }
+    request_data->FirmwareHashLen = cmd_len;
+    shim_tpcm_fillup_content (request_data, output, description);
+
+    console_print(L"get_firmware_hash_content\n");
+    console_print(L"sizeof(request_data)=%d\n", sizeof(request_data));
+    console_print(L"sizeof(OEM_BMC_MEASURE_REQUSET)=%d\n", sizeof(OEM_BMC_MEASURE_REQUSET));
+
+//发送度量请求
+    efi_status = tpcm_ipmi->excute_ipmi_cmd(tpcm_ipmi, request, request_data,
+                                (UINT8) sizeof(OEM_BMC_MEASURE_REQUSET), &response_data,
+                                &response_length, NULL);
+    if (efi_status != EFI_SUCCESS) {
+        console_print(L"ipmi protocol open failed\n");
+        goto out;
+    }
+    console_print(L"ipmi protocol: send tpcm measure request success\n");
+
+//获取度量结果
+    get_result_request_data.OemSignature[0] = 0xDB;
+    get_result_request_data.OemSignature[1] = 0x07;
+    get_result_request_data.OemSignature[2] = 0x00;
+    get_result_request_data.SubCmd = IPMI_SUB_CMD_CONTROL_REQ;
+    get_result_request_data.FirmwareType = IPMI_FW_SHIM_GRUB;
+
+    response_length = sizeof(OEM_BMC_GET_RESULT_RESPONSE);
+
+    while (timeout_ms > 0) {
+        msleep(200);
+        timeout_ms -= 200;
+        console_print(L"get result request: request_size[%d], response_length[%d]\n", sizeof(get_result_request_data), response_length);
+        efi_status = tpcm_ipmi->excute_ipmi_cmd(tpcm_ipmi, request, &get_result_request_data,
+                                  sizeof(get_result_request_data), &get_result_response_data,
+                                  &response_length, NULL);
+        console_print(L"huawe iana = [ 0x%X %X %X ], ControlResult = %d\n", get_result_response_data.OemSignature[0], get_result_response_data.OemSignature[1], get_result_response_data.OemSignature[2], get_result_response_data.ControlResult);
+        if (efi_status != EFI_SUCCESS) {
+            console_print(L"EFI : attempt to get measurement result failed, ret=%d\n", efi_status);
+            continue;
+        }
+	    if (response_length == sizeof(OEM_BMC_GET_RESULT_RESPONSE) && get_result_response_data.ControlResult != IPMI_MEASURE_UNKNOW) {
+            console_print(L"ipmi protocol: get tpcm measurement result success\n");
+            break;
+        }
+    }
+
+// 决定是否启动grub
+    if (get_result_response_data.ControlResult == IPMI_MEASURE_SUCCESS) {
+        efi_status = EFI_SUCCESS;
+    } else {
+        efi_status = EFI_INVALID_PARAMETER;
+        console_print(L"Error: the tpcm measurement result does not pass, and the startup is rejected");
+    }
+
+out:
+    if(request_data){
+        free(request_data);
+        request_data = NULL;
+    }
+    return efi_status;
+}
+
+static EFI_STATUS
+tpcm_ipmi_measure (unsigned char *buf, size_t size, void *description, EFI_HANDLE image_handle)
+{
+    EFI_STATUS efi_status;
+    BOOLEAN switch_flag = TRUE;
+    efi_status = LibLocateProtocol(&gIpmiInterfaceProtocolGuid,
+					  (VOID **) &tpcm_ipmi);
+    if (EFI_ERROR(efi_status))
+		return EFI_SUCCESS; // support no tpcm scenes
+    if (!tpcm_ipmi) {
+        console_print(L"Error: tpcm_ipmi is NULL");
+        return EFI_INVALID_PARAMETER;
+    }
+
+    switch_flag = shim_tpcm_measure_switch();
+    if (switch_flag == TRUE) {
+        return shim_tpcm_log_event(buf, size, description, image_handle);
+    }
+    return EFI_SUCCESS;
+}
+
+EFI_STATUS
+tpcm_ipmi_write (void *context __attribute__ ((unused)), unsigned char *buf, size_t size, EFI_HANDLE image_handle)
+{
+    EFI_STATUS efi_status;
+    efi_status = tpcm_ipmi_measure (buf, size, context, image_handle);
+    return efi_status;
+}
+
+
diff --git a/tpcm.h b/tpcm.h
new file mode 100644
index 0000000..8e23a84
--- /dev/null
+++ b/tpcm.h
@@ -0,0 +1,195 @@
+#ifndef SHIM_EFI_TPCM_HEADER
+#define SHIM_EFI_TPCM_HEADER 1
+
+#include <openssl/err.h>
+#include <openssl/bn.h>
+#include <openssl/dh.h>
+#include <openssl/ocsp.h>
+#include <openssl/pkcs12.h>
+#include <openssl/rand.h>
+#include <openssl/crypto.h>
+#include <openssl/ssl.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/rsa.h>
+#include <openssl/dso.h>
+
+#include <Library/BaseCryptLib.h>
+
+#define EFI_TPCM_GUID {0xa37e200e, 0xda90, 0x473b, {0x8b, 0xb5, 0x1d, 0x7b, 0x11, 0xba, 0x32, 0x33}}
+#define SHIM_EFI_HASH2_SERVICE_BINDING_PROTOCOL_GUID {0xda836f8d, 0x217f, 0x4ca0, { 0x99, 0xc2, 0x1c, 0xa4, 0xe1, 0x60, 0x77, 0xea}}
+#define SHIM_EFI_HASH2_PROTOCOL_GUID {0x55b1d734, 0xc5e1, 0x49db, { 0x96, 0x47, 0xb1, 0x6a, 0xfb, 0xe, 0x30, 0x5b}}
+#define SHIM_HASH_ALGORITHM_SM3_GUID {0x9DCD754B, 0x3479, 0x27AD, { 0x56, 0x4C, 0x68, 0x7C, 0x68, 0xEC, 0xF9, 0xB9}}
+
+#define OEM_SIG_SIZE                3
+#define FIRMWARE_VERSION_SIZE       32
+#define FIRMWARE_HASH_CONYENT_SIZE  32
+#define FIRMWARE_NAME_SIZE          32
+#define SHIM_IPMI_TIMEOUT_MS        7000
+//
+// LUN
+//
+#define IPMI_BMC_LUN                0x00
+// Net Function Definition
+#define IPMI_NETFN_OEM              0x30
+
+#define IPMI_CMD_GET_MEASURE_PARM   0x92 //change a name
+
+#define IPMI_SUB_CMD_MEASURE_REQ       0x57 //change a name
+#define IPMI_SUB_CMD_CONTROL_REQ       0x58
+#define IPMI_SUB_CMD_SWITCH_REQ        0x59
+
+//bmeasure
+#define DEFAULT_HASH_SIZE 32
+#define MEASURE_DATA_MEM_SIZE   0x100000
+
+#define TPCM_TAG_REQ_COMMAND	0x000000C1
+#define TPCM_ORD_ExternSimpleBootMeasure		0x00001053
+
+typedef struct{
+	UINT32 uiCmdTag;
+	UINT32 uiCmdLength;
+	UINT32 uiCmdCode;
+	UINT32 uiPcr;
+	UINT32 uiStage;
+	UINT8  uaDigest[DEFAULT_HASH_SIZE];
+	UINT32 uiObjLen;
+	UINT8  uaObj[FIRMWARE_NAME_SIZE];
+}extern_simple_bmeasure_req_st;
+
+typedef struct {
+    UINT8  OemSignature[OEM_SIG_SIZE];
+    UINT8  SubCmd;
+    UINT8  FirmwareType;
+    UINT8  FirmwareDetailType;
+    UINT8  FirmwareHashAlgorithmType;
+    UINT8  FirmwareHashLen;
+    extern_simple_bmeasure_req_st  FirmwareHashContent;
+    UINT8  FirmwareVerionLen;
+    UINT8  FirmwareVerion[FIRMWARE_VERSION_SIZE];
+} OEM_BMC_MEASURE_REQUSET;
+
+typedef struct {
+    UINT8  CompletionCode;
+    UINT8  OemSignature[OEM_SIG_SIZE];
+} OEM_BMC_MEASURE_RESPONSE;
+
+typedef struct {
+    UINT8  OemSignature[OEM_SIG_SIZE];
+    UINT8  SubCmd;
+    UINT8  FirmwareType;
+    UINT8  FirmwareDetailType;
+} OEM_BMC_GET_RESULT_REQUSET;
+
+typedef struct {
+//    UINT8  CompletionCode;
+    UINT8  OemSignature[OEM_SIG_SIZE];
+    UINT8  ControlResult;
+} OEM_BMC_GET_RESULT_RESPONSE;
+
+typedef enum {
+    IPMI_SYSTEM_INTERFACE_UNKNOWN,  // IPMI_SYSTEM_INTERFACE_TYPE->UNKNOWN
+    IPMI_SYSTEM_INTERFACE_KCS,
+    IPMI_SYSTEM_INTERFACE_SMIC,
+    IPMI_SYSTEM_INTERFACE_BT, // IPMI_SYSTEM_INTERFACE_TYPE->BT
+    IPMI_SYSTEM_INTERFACE_SSIF,
+    IPMI_SYSTEM_INTERFACE_MAX_TYPE // IPMI_SYSTEM_INTERFACE_TYPE->MAX_TYPE
+} shim_ipmi_system_interface_type;
+
+
+typedef struct {
+    UINT8 lun : 2;
+    UINT8 net_fn : 6;
+    UINT8 cmd;
+} shim_ipmi_cmd_header;
+
+typedef enum {
+    IPMI_MEMORY,
+    IPMI_IO, // IPMI_IO
+    IPMI_MAX_INTERFACE_ADDRESS_TYPE
+} shim_ipmi_interface_address_type;
+
+typedef enum {
+    IPMI_FW_SHIM,
+    IPMI_FW_SHIM_GRUB,
+    IPMI_FW_OS
+} shim_ipmi_firmware_type;
+
+typedef enum {
+    IPMI_FW_DETAIL_GRUB,
+    RESERVED1,
+    RESERVED2
+} shim_ipmi_firmware_detail_type;
+
+typedef enum {
+    SM3_HASH,
+    HASH_RESERVED1,
+    HASH_RESERVED2
+} shim_ipmi_firmware_hash_type;
+
+typedef enum {
+    IPMI_MEASURE_UNKNOW,
+    IPMI_MEASURE_SUCCESS,
+    IPMI_MEASURE_FAIL
+} shim_ipmi_measure_result_type;
+
+typedef enum {
+    IPMI_SWITCH_UNKNOW,
+    IPMI_SWITCH_OPEN,
+    IPMI_SWITCH_CLOSE
+} shim_ipmi_get_switch_result_type;
+
+typedef union {
+    UINT8 Md5Hash[16];
+    UINT8 Sha1Hash[20];
+    UINT8 Sha224Hash[28];
+    UINT8 Sha256Hash[32];
+    UINT8 Sha384Hash[48];
+    UINT8 Sha512Hash[64];
+    UINT8 Sm3Hash[32];
+} shim_efi_hash2_output;
+
+struct shim_efi_hash2_protocol {
+    EFI_STATUS (*get_hash_size) (struct shim_efi_hash2_protocol *this,
+                                 EFI_GUID *hash_algorithm,
+                                 UINT64 hash_size);
+
+    EFI_STATUS (*hash) (struct shim_efi_hash2_protocol *this,
+                        EFI_GUID *hash_algorithm,
+                        UINT8 *message,
+                        UINT64 message_size,
+                        shim_efi_hash2_output *hash);
+
+    EFI_STATUS (*hash_init) (struct shim_efi_hash2_protocol *this,
+                             EFI_GUID *hash_algorithm);
+
+    EFI_STATUS (*hash_update) (struct shim_efi_hash2_protocol *this,
+                               UINT8 *message,
+                               UINT64 message_size);
+
+    EFI_STATUS (*hash_final) (struct shim_efi_hash2_protocol *this,
+                              shim_efi_hash2_output *hash);
+};
+
+typedef struct shim_efi_hash2_protocol shim_efi_hash2_protocol_t;
+
+struct shim_efi_ipmi_interface_protocol
+{
+    EFI_STATUS (*excute_ipmi_cmd) (struct shim_efi_ipmi_interface_protocol *this,
+                                   shim_ipmi_cmd_header request,
+                                   void *send_data,
+                                   UINT8 send_length,
+                                   void *recv_data,
+                                   UINT8 *recv_length,
+                                   UINT16 *status_codes);
+    shim_ipmi_system_interface_type (*get_ipmi_interface_type) (struct shim_efi_ipmi_interface_protocol *this);
+    UINT16 (*get_ipmi_base_address) (struct shim_efi_ipmi_interface_protocol *this);
+    shim_ipmi_interface_address_type (*get_ipmi_base_address_type) (struct shim_efi_ipmi_interface_protocol *this);
+    UINT8 (*get_ipmi_version) (struct shim_efi_ipmi_interface_protocol *this);
+};
+
+typedef struct shim_efi_ipmi_interface_protocol shim_efi_ipmi_interface_protocol_t;
+
+EFI_STATUS tpcm_ipmi_write (void *context __attribute__ ((unused)), unsigned char *buf, size_t size, EFI_HANDLE image_handle);
+
+#endif
-- 
2.27.0

