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|
// SPDX-License-Identifier: GPL-2.0+
/*
* efi_selftest_devicepath
*
* Copyright (c) 2020 Heinrich Schuchardt <xypron.glpk@gmx.de>
*
* Test the EFI_TCG2_PROTOCOL
*/
#include <efi_selftest.h>
#include <efi_tcg2.h>
/*
* Include containing the miniapp.efi application.
* Note that tcg2 selftest measures the PE/COFF image,
* so we must have the pre-build efi application for
* each architecture.
*/
#if defined(__arm__)
#include "efi_miniapp_tcg2_arm.h"
#elif defined(__aarch64__)
#include "efi_miniapp_tcg2_arm64.h"
#elif defined(__i386__)
#include "efi_miniapp_tcg2_ia32.h"
#elif defined(__x86_64__)
#include "efi_miniapp_tcg2_x86_64.h"
#elif defined(__riscv) && (__riscv_xlen == 32)
#include "efi_miniapp_tcg2_riscv32.h"
#elif defined(__riscv) && (__riscv_xlen == 64)
#include "efi_miniapp_tcg2_riscv64.h"
#endif
#include <linux/unaligned/be_byteshift.h>
#include <linux/unaligned/le_byteshift.h>
#include <mapmem.h>
#include <smbios.h>
#include <tables_csum.h>
static struct efi_boot_services *boottime;
static const efi_guid_t guid_tcg2 = EFI_TCG2_PROTOCOL_GUID;
/* Block size of compressed disk image */
#define COMPRESSED_DISK_IMAGE_BLOCK_SIZE 8
static efi_handle_t image_handle;
/* Decompressed file image */
static u8 *image;
/* One 8 byte block of the compressed disk image */
struct line {
size_t addr;
char *line;
};
/* Compressed file image */
struct compressed_file_image {
size_t length;
struct line lines[];
};
static struct compressed_file_image img = EFI_ST_DISK_IMG;
static struct efi_tcg2_event *efi_tcg2_event;
static struct efi_runtime_services *runtime;
#define BOOT_NAME_1000 u"Boot1000"
#define BOOT_NAME_1001 u"Boot1001"
#define BOOT_NAME_1002 u"Boot1002"
#define DEFAULT_ATTR (EFI_VARIABLE_NON_VOLATILE | \
EFI_VARIABLE_BOOTSERVICE_ACCESS | \
EFI_VARIABLE_RUNTIME_ACCESS)
/* "efidebug boot add -b 1000 test1000 virtio 0:1 /EFI/debian/grubaa64.efi" */
static const u8 boot_1000[] = {
0x01, 0x00, 0x00, 0x00, 0x8d, 0x00, 0x74, 0x00, 0x65, 0x00, 0x73, 0x00,
0x74, 0x00, 0x30, 0x00, 0x00, 0x00, 0x01, 0x04, 0x14, 0x00, 0xb9, 0x73,
0x1d, 0xe6, 0x84, 0xa3, 0xcc, 0x4a, 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3,
0x62, 0x8b, 0x01, 0x04, 0x15, 0x00, 0x92, 0x37, 0x29, 0x63, 0xf5, 0xad,
0x25, 0x93, 0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e, 0x00, 0x04,
0x01, 0x2a, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57,
0x5a, 0x47, 0xc2, 0x35, 0x27, 0x44, 0x47, 0x9f, 0x01, 0x67, 0xfe, 0xfa,
0x1d, 0x06, 0xae, 0x02, 0x02, 0x04, 0x04, 0x36, 0x00, 0x5c, 0x00, 0x45,
0x00, 0x46, 0x00, 0x49, 0x00, 0x5c, 0x00, 0x64, 0x00, 0x65, 0x00, 0x62,
0x00, 0x69, 0x00, 0x61, 0x00, 0x6e, 0x00, 0x5c, 0x00, 0x67, 0x00, 0x72,
0x00, 0x75, 0x00, 0x62, 0x00, 0x61, 0x00, 0x61, 0x00, 0x36, 0x00, 0x34,
0x00, 0x2e, 0x00, 0x65, 0x00, 0x66, 0x00, 0x69, 0x00, 0x00, 0x00, 0x7f,
0xff, 0x04, 0x00 };
/* "efidebug boot add -b 1001 test1001 virtio 0:1 /EFI/debian/grubaa64.efi" */
static const u8 boot_1001[] = {
0x01, 0x00, 0x00, 0x00, 0x8d, 0x00, 0x74, 0x00, 0x65, 0x00, 0x73, 0x00,
0x74, 0x00, 0x31, 0x00, 0x00, 0x00, 0x01, 0x04, 0x14, 0x00, 0xb9, 0x73,
0x1d, 0xe6, 0x84, 0xa3, 0xcc, 0x4a, 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3,
0x62, 0x8b, 0x01, 0x04, 0x15, 0x00, 0x92, 0x37, 0x29, 0x63, 0xf5, 0xad,
0x25, 0x93, 0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e, 0x00, 0x04,
0x01, 0x2a, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57,
0x5a, 0x47, 0xc2, 0x35, 0x27, 0x44, 0x47, 0x9f, 0x01, 0x67, 0xfe, 0xfa,
0x1d, 0x06, 0xae, 0x02, 0x02, 0x04, 0x04, 0x36, 0x00, 0x5c, 0x00, 0x45,
0x00, 0x46, 0x00, 0x49, 0x00, 0x5c, 0x00, 0x64, 0x00, 0x65, 0x00, 0x62,
0x00, 0x69, 0x00, 0x61, 0x00, 0x6e, 0x00, 0x5c, 0x00, 0x67, 0x00, 0x72,
0x00, 0x75, 0x00, 0x62, 0x00, 0x61, 0x00, 0x61, 0x00, 0x36, 0x00, 0x34,
0x00, 0x2e, 0x00, 0x65, 0x00, 0x66, 0x00, 0x69, 0x00, 0x00, 0x00, 0x7f,
0xff, 0x04, 0x00 };
/* "efidebug boot add -b 1002 test1002 virtio 0:1 /EFI/debian/grubaa64.efi" */
static const u8 boot_1002[] = {
0x01, 0x00, 0x00, 0x00, 0x8d, 0x00, 0x74, 0x00, 0x65, 0x00, 0x73, 0x00,
0x74, 0x00, 0x32, 0x00, 0x00, 0x00, 0x01, 0x04, 0x14, 0x00, 0xb9, 0x73,
0x1d, 0xe6, 0x84, 0xa3, 0xcc, 0x4a, 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3,
0x62, 0x8b, 0x01, 0x04, 0x15, 0x00, 0x92, 0x37, 0x29, 0x63, 0xf5, 0xad,
0x25, 0x93, 0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e, 0x00, 0x04,
0x01, 0x2a, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57,
0x5a, 0x47, 0xc2, 0x35, 0x27, 0x44, 0x47, 0x9f, 0x01, 0x67, 0xfe, 0xfa,
0x1d, 0x06, 0xae, 0x02, 0x02, 0x04, 0x04, 0x36, 0x00, 0x5c, 0x00, 0x45,
0x00, 0x46, 0x00, 0x49, 0x00, 0x5c, 0x00, 0x64, 0x00, 0x65, 0x00, 0x62,
0x00, 0x69, 0x00, 0x61, 0x00, 0x6e, 0x00, 0x5c, 0x00, 0x67, 0x00, 0x72,
0x00, 0x75, 0x00, 0x62, 0x00, 0x61, 0x00, 0x61, 0x00, 0x36, 0x00, 0x34,
0x00, 0x2e, 0x00, 0x65, 0x00, 0x66, 0x00, 0x69, 0x00, 0x00, 0x00, 0x7f,
0xff, 0x04, 0x00};
/* "efidebug boot order 1002 1000 1001" */
static u8 boot_order[] = {0x02, 0x10, 0x00, 0x10, 0x01, 0x10};
static void *orig_smbios_table;
static u64 dmi_addr = U32_MAX;
#define SMBIOS_ENTRY_HEADER_SIZE 0x20
/* smbios table for the measurement test */
static u8 smbios_table_test[] = {
0x5f, 0x53, 0x4d, 0x5f, 0x2c, 0x1f, 0x03, 0x00, 0x54, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x5f, 0x44, 0x4d, 0x49, 0x5f, 0xe4, 0x5c, 0x01,
0x20, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00,
0x01, 0x02, 0x00, 0x00, 0x03, 0x00, 0x80, 0x08, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x0c, 0x15, 0x0a, 0xff, 0xff, 0x55, 0x2d, 0x42, 0x6f,
0x6f, 0x74, 0x00, 0x32, 0x30, 0x32, 0x31, 0x2e, 0x31, 0x30, 0x2d, 0x72,
0x63, 0x34, 0x2d, 0x30, 0x30, 0x30, 0x30, 0x35, 0x2d, 0x67, 0x37, 0x32,
0x37, 0x63, 0x33, 0x66, 0x33, 0x32, 0x35, 0x39, 0x2d, 0x64, 0x69, 0x72,
0x74, 0x79, 0x00, 0x31, 0x30, 0x2f, 0x30, 0x31, 0x2f, 0x32, 0x30, 0x32,
0x31, 0x00, 0x00, 0x01, 0x1b, 0x01, 0x00, 0x01, 0x02, 0x00, 0x03, 0x31,
0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x55, 0x6e, 0x6b, 0x6e, 0x6f, 0x77,
0x6e, 0x00, 0x55, 0x6e, 0x6b, 0x6e, 0x6f, 0x77, 0x6e, 0x20, 0x50, 0x72,
0x6f, 0x64, 0x75, 0x63, 0x74, 0x00, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
0x37, 0x38, 0x00, 0x00, 0x02, 0x0e, 0x02, 0x00, 0x01, 0x02, 0x00, 0x04,
0x03, 0x01, 0x01, 0x01, 0x00, 0x0a, 0x55, 0x6e, 0x6b, 0x6e, 0x6f, 0x77,
0x6e, 0x00, 0x55, 0x6e, 0x6b, 0x6e, 0x6f, 0x77, 0x6e, 0x20, 0x50, 0x72,
0x6f, 0x64, 0x75, 0x63, 0x74, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33,
0x33, 0x33, 0x00, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x00,
0x00, 0x03, 0x15, 0x03, 0x00, 0x01, 0x03, 0x00, 0x02, 0x03, 0x03, 0x03,
0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x6e,
0x6b, 0x6e, 0x6f, 0x77, 0x6e, 0x00, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
0x37, 0x38, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x00,
0x00, 0x04, 0x30, 0x04, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x06, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x02, 0x03, 0x04,
0x04, 0x04, 0x08, 0x00, 0x00, 0x02, 0x00, 0x08, 0x00, 0x08, 0x00, 0x01,
0x00, 0x55, 0x6e, 0x6b, 0x6e, 0x6f, 0x77, 0x6e, 0x00, 0x31, 0x32, 0x33,
0x34, 0x35, 0x36, 0x37, 0x38, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33,
0x33, 0x33, 0x00, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x35, 0x00,
0x00, 0x20, 0x0b, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7f, 0x04, 0x06, 0x00, 0x00, 0x00
};
#define IDX_ARRAY_SZ 3 /* support 24 PCRs */
#define TPM2_CMD_BUF_SIZE 64
/* TPM command is big endian */
#define __MSB(x) ((x) >> 8)
#define __LSB(x) ((x) & 0xFF)
#define tpm_u16(x) __MSB(x), __LSB(x)
#define tpm_u32(x) tpm_u16((x) >> 16), tpm_u16((x) & 0xFFFF)
#define TPM2_PCR_READ_HEADER_SIZE 30
static u8 (*pcrs)[TPM2_SHA256_DIGEST_SIZE];
static u8 expected_pcrs[EFI_TCG2_MAX_PCR_INDEX + 1][TPM2_SHA256_DIGEST_SIZE] = {
{0x91, 0x21, 0x37, 0xc7, 0x1a, 0x49, 0x19, 0xc8,
0xf1, 0xfb, 0xa9, 0x84, 0x5c, 0x65, 0xa9, 0xdd,
0x7b, 0xb9, 0xfe, 0xa1, 0xcd, 0x64, 0x49, 0xdd,
0xed, 0xe2, 0x65, 0x82, 0xc5, 0x3e, 0xf4, 0xc4},
{0xf5, 0x79, 0xf3, 0x20, 0x62, 0x6e, 0x8b, 0x58,
0x62, 0xa3, 0x4e, 0x2f, 0xb7, 0x10, 0xac, 0x34,
0x4e, 0x68, 0x94, 0x37, 0x87, 0x29, 0xc4, 0xbe,
0xa3, 0xc4, 0xd9, 0x14, 0x2b, 0x66, 0x79, 0x9b},
{0x3d, 0x45, 0x8c, 0xfe, 0x55, 0xcc, 0x03, 0xea,
0x1f, 0x44, 0x3f, 0x15, 0x62, 0xbe, 0xec, 0x8d,
0xf5, 0x1c, 0x75, 0xe1, 0x4a, 0x9f, 0xcf, 0x9a,
0x72, 0x34, 0xa1, 0x3f, 0x19, 0x8e, 0x79, 0x69},
{0x3d, 0x45, 0x8c, 0xfe, 0x55, 0xcc, 0x03, 0xea,
0x1f, 0x44, 0x3f, 0x15, 0x62, 0xbe, 0xec, 0x8d,
0xf5, 0x1c, 0x75, 0xe1, 0x4a, 0x9f, 0xcf, 0x9a,
0x72, 0x34, 0xa1, 0x3f, 0x19, 0x8e, 0x79, 0x69},
/* PCR[4] is different per architecture */
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x3d, 0x45, 0x8c, 0xfe, 0x55, 0xcc, 0x03, 0xea,
0x1f, 0x44, 0x3f, 0x15, 0x62, 0xbe, 0xec, 0x8d,
0xf5, 0x1c, 0x75, 0xe1, 0x4a, 0x9f, 0xcf, 0x9a,
0x72, 0x34, 0xa1, 0x3f, 0x19, 0x8e, 0x79, 0x69},
/* PCR[6] is different per architecture */
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x96, 0x74, 0xae, 0xcd, 0x3f, 0x40, 0xb4, 0xa9,
0x36, 0xae, 0x19, 0xc8, 0x84, 0x8a, 0xb9, 0x5a,
0x87, 0x99, 0xd8, 0x89, 0x7f, 0xfc, 0x40, 0x48,
0x05, 0x99, 0x65, 0x2e, 0x55, 0xd4, 0x93, 0x32},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
};
/*
* PCR[4] and PCR[6] have the PE/COFF image measurement,
* this PCRs have different value in each architecture.
*/
#if defined(__arm__)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0xcd, 0xa2, 0x06, 0xad, 0x83, 0x9b, 0x8f, 0x92,
0x01, 0xf9, 0xc8, 0x3d, 0xc9, 0x54, 0x66, 0xb3,
0x97, 0x35, 0x88, 0xe1, 0xea, 0xd3, 0x1a, 0xd6,
0x56, 0xee, 0x43, 0x1c, 0xdb, 0x4b, 0xf9, 0x1f},
/* PCR[6] */
{0x9c, 0xb8, 0x9d, 0x4a, 0xf6, 0x63, 0x95, 0xb0,
0x95, 0xfe, 0x44, 0x30, 0x0f, 0x3a, 0x0b, 0x7c,
0xef, 0xc7, 0xb6, 0x6a, 0x59, 0xae, 0xcb, 0xf6,
0xbd, 0x2d, 0xb5, 0xb9, 0xb4, 0x95, 0x7d, 0xaf}
};
#elif defined(__aarch64__)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0x69, 0xdb, 0x01, 0x5e, 0x07, 0xed, 0x9c, 0xbb,
0x27, 0x65, 0xb1, 0xf0, 0x7b, 0x04, 0xbc, 0x31,
0xd1, 0xec, 0x00, 0xe4, 0xe1, 0x49, 0xdb, 0x1e,
0x8b, 0x2d, 0xa2, 0x26, 0xb5, 0x8d, 0x07, 0xe2},
/* PCR[6] */
{0x53, 0x1b, 0x27, 0xb2, 0x6f, 0x2d, 0xab, 0x9b,
0x6f, 0xbc, 0xd1, 0x8f, 0xc9, 0x14, 0x48, 0xe7,
0x6d, 0x1b, 0xfb, 0x1b, 0x53, 0xc5, 0x8e, 0xf4,
0x41, 0x50, 0x79, 0x24, 0x66, 0x57, 0x7b, 0xf8}
};
#elif defined(__i386__)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0xec, 0x5e, 0xdb, 0x68, 0x13, 0x48, 0x36, 0x0a,
0x3a, 0xbc, 0x7b, 0x7b, 0xbc, 0x74, 0x7a, 0xa5,
0x55, 0xea, 0xb9, 0x09, 0x6a, 0x6e, 0xc3, 0x21,
0x51, 0x46, 0x22, 0xd2, 0x9d, 0xc9, 0xd5, 0x6a},
/* PCR[6] */
{0x26, 0x14, 0xe7, 0xde, 0x91, 0xd1, 0xf3, 0xde,
0x7a, 0xc2, 0x78, 0xaf, 0x4b, 0x2e, 0x05, 0x9d,
0x35, 0x17, 0xee, 0xcc, 0x0e, 0x77, 0x8d, 0x3f,
0x7e, 0x20, 0x75, 0xfa, 0xbc, 0xbc, 0x24, 0x3e}
};
#elif defined(__x86_64__)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0x9a, 0x75, 0x99, 0x8b, 0x74, 0x45, 0xb6, 0x26,
0x50, 0xe0, 0xbb, 0xfa, 0x2a, 0xa6, 0x19, 0xec,
0x97, 0x12, 0x0c, 0xb5, 0xc8, 0x2a, 0xfe, 0xe5,
0x29, 0xc8, 0xd3, 0x98, 0xe9, 0xd1, 0x9d, 0xd5},
/* PCR[6] */
{0xa2, 0xa2, 0xd3, 0xa7, 0x84, 0xc2, 0x95, 0x2a,
0xab, 0x6f, 0xe7, 0xe8, 0x86, 0x9f, 0x99, 0xc6,
0x6a, 0x8c, 0xcc, 0x5c, 0xb8, 0x83, 0xfa, 0x86,
0x56, 0x5e, 0x91, 0x17, 0x0b, 0x5f, 0x54, 0xa8}
};
#elif defined(__riscv) && (__riscv_xlen == 32)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0x64, 0xe9, 0x25, 0xb3, 0xd8, 0x33, 0xb3, 0x1b,
0x74, 0x0c, 0x81, 0x45, 0xef, 0x61, 0xf1, 0x87,
0xef, 0x65, 0x67, 0x28, 0x1a, 0x54, 0x97, 0xb2,
0xd3, 0x62, 0x00, 0xe7, 0xb6, 0x7a, 0xd5, 0x8e},
/* PCR[6] */
{0x82, 0xab, 0xc5, 0x6a, 0xbf, 0x08, 0x43, 0x3f,
0x85, 0xbd, 0x8f, 0x8e, 0x23, 0x62, 0x48, 0x4a,
0x44, 0x53, 0xf0, 0xae, 0x8d, 0x4c, 0xda, 0x04,
0x89, 0x9c, 0x0b, 0x81, 0x3a, 0x53, 0xf3, 0xac}
};
#elif defined(__riscv) && (__riscv_xlen == 64)
static u8 expected_pcrs_per_arch[][TPM2_SHA256_DIGEST_SIZE] = {
/* PCR[4] */
{0x9b, 0x5f, 0x10, 0x24, 0x28, 0x5d, 0x7d, 0x1f,
0x9f, 0xee, 0xe9, 0x90, 0xf1, 0x7a, 0x03, 0xb1,
0x68, 0x7b, 0x28, 0x45, 0x98, 0x5e, 0xf5, 0x5e,
0xc1, 0x22, 0x61, 0x8c, 0x2f, 0xb5, 0xbf, 0x80},
/* PCR[6] */
{0x6d, 0x16, 0x17, 0xf4, 0x9a, 0xa8, 0x49, 0xc2,
0xf4, 0x9c, 0x35, 0x30, 0x0c, 0xde, 0x65, 0xdb,
0xd3, 0x37, 0x9c, 0xe2, 0x9f, 0x14, 0x81, 0x74,
0xc3, 0x94, 0x8a, 0x9e, 0x26, 0xbf, 0xfb, 0xb2}
};
#endif
struct boot_variable {
u16 name[16];
u8 *buf;
efi_uintn_t size;
u32 attr;
const u8 *test_data;
efi_uintn_t test_data_size;
};
static struct boot_variable boot_variable_test[] = {
{u"BootOrder", NULL, 0, DEFAULT_ATTR, boot_order, sizeof(boot_order)},
{BOOT_NAME_1000, NULL, 0, DEFAULT_ATTR, boot_1000, sizeof(boot_1000)},
{BOOT_NAME_1001, NULL, 0, DEFAULT_ATTR, boot_1001, sizeof(boot_1001)},
{BOOT_NAME_1002, NULL, 0, DEFAULT_ATTR, boot_1002, sizeof(boot_1002)},
};
/*
* efi_status_t decompress() - Decompress the disk image.
*
* @image decompressed disk image
* Return: status code
*/
static efi_status_t decompress(u8 **image)
{
u8 *buf;
size_t i;
size_t addr;
size_t len;
efi_status_t ret;
ret = boottime->allocate_pool(EFI_LOADER_DATA, img.length,
(void **)&buf);
if (ret != EFI_SUCCESS) {
efi_st_error("Out of memory\n");
return ret;
}
boottime->set_mem(buf, img.length, 0);
for (i = 0; ; ++i) {
if (!img.lines[i].line)
break;
addr = img.lines[i].addr;
len = COMPRESSED_DISK_IMAGE_BLOCK_SIZE;
if (addr + len > img.length)
len = img.length - addr;
boottime->copy_mem(buf + addr, img.lines[i].line, len);
}
*image = buf;
return ret;
}
/*
* efi_status_t setup_boot_variable() - configure dummy boot variables
*
* Preexisting variable values are saved and will be restored by
* calling restore_boot_variable().
*
* Return: status code
*/
static efi_status_t setup_boot_variable(void)
{
efi_status_t ret;
u32 i;
efi_uintn_t size;
for (i = 0; i < ARRAY_SIZE(boot_variable_test); i++) {
size = 0;
ret = runtime->get_variable(boot_variable_test[i].name,
&efi_global_variable_guid,
&boot_variable_test[i].attr,
&size,
NULL);
if (ret == EFI_BUFFER_TOO_SMALL) {
/* Variable exists, save the current value */
boot_variable_test[i].size = size;
ret = boottime->allocate_pool(EFI_LOADER_DATA,
boot_variable_test[i].size,
(void **)&boot_variable_test[i].buf);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to allocate buffer for boot variable\n");
return ret;
}
ret = runtime->get_variable(boot_variable_test[i].name,
&efi_global_variable_guid,
&boot_variable_test[i].attr,
&boot_variable_test[i].size,
boot_variable_test[i].buf);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to get current boot variable\n");
return ret;
}
}
/* set boot variable for the measurement test */
ret = runtime->set_variable(boot_variable_test[i].name,
&efi_global_variable_guid,
boot_variable_test[i].attr,
boot_variable_test[i].test_data_size,
boot_variable_test[i].test_data);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to set test boot variable(%d)n", i);
return ret;
}
}
return 0;
}
/*
* efi_status_t restore_boot_variable() - restore original values
*
* Restore the variable values saved in setup_boot_variable().
*
* Return: status code
*/
static efi_status_t restore_boot_variable(void)
{
int i;
efi_status_t ret;
for (i = 0; i < ARRAY_SIZE(boot_variable_test); i++) {
if (boot_variable_test[i].buf) {
ret = runtime->set_variable(boot_variable_test[i].name,
&efi_global_variable_guid,
boot_variable_test[i].attr,
boot_variable_test[i].size,
boot_variable_test[i].buf);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to restore boot variable\n");
return ret;
}
ret = boottime->free_pool(boot_variable_test[i].buf);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to free boot variable\n");
return ret;
}
} else {
/* delete the variable used only for testing */
ret = runtime->set_variable(boot_variable_test[i].name,
&efi_global_variable_guid,
0, 0, NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to delete boot variable\n");
return ret;
}
}
}
return EFI_SUCCESS;
}
/**
* void *find_smbios_table() - Find smbios table
*
* @systable system table
* Return: status code
*/
static void *find_smbios_table(const struct efi_system_table *systable)
{
u32 i;
for (i = 0; i < systable->nr_tables; i++) {
if (!guidcmp(&smbios_guid, &systable->tables[i].guid))
return systable->tables[i].table;
}
return NULL;
}
/**
* efi_status_t setup_smbios_table() - Prepare the dummy SMBIOS table
*
* @systable system table
* Return: status code
*/
static efi_status_t setup_smbios_table(const struct efi_system_table *systable)
{
struct smbios_entry *se;
efi_status_t ret;
/* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
void *dmi;
char *istart;
int isize;
if (sizeof(smbios_table_test) > EFI_PAGE_SIZE)
return EFI_OUT_OF_RESOURCES;
orig_smbios_table = find_smbios_table(systable);
/* Reserve 4kiB page for SMBIOS */
ret = boottime->allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
EFI_RUNTIME_SERVICES_DATA, 1, &dmi_addr);
if (ret != EFI_SUCCESS) {
/* Could not find space in lowmem, use highmem instead */
ret = boottime->allocate_pages(EFI_ALLOCATE_ANY_PAGES,
EFI_RUNTIME_SERVICES_DATA, 1,
&dmi_addr);
if (ret != EFI_SUCCESS)
return ret;
}
dmi = (void *)(uintptr_t)dmi_addr;
se = dmi;
boottime->copy_mem(se, smbios_table_test, sizeof(smbios_table_test));
/* update smbios table start address */
se->struct_table_address = (uintptr_t)((u8 *)dmi + SMBIOS_ENTRY_HEADER_SIZE);
/* calculate checksums */
istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
se->intermediate_checksum = table_compute_checksum(istart, isize);
se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
/* Install SMBIOS information as configuration table */
ret = boottime->install_configuration_table(&smbios_guid, dmi);
if (ret != EFI_SUCCESS) {
efi_st_error("Cannot install SMBIOS table\n");
boottime->free_pages(dmi_addr, 1);
}
return ret;
}
/**
* efi_st_tcg2_setup() - setup test
*
* @handle: handle of the loaded image
* @systable: system table
* Return: status code
*/
static int efi_st_tcg2_setup(const efi_handle_t img_handle,
const struct efi_system_table *systable)
{
efi_status_t ret;
struct uefi_image_load_event image_load_event;
image_handle = img_handle;
boottime = systable->boottime;
runtime = systable->runtime;
/* Load the application image into memory */
decompress(&image);
ret = boottime->allocate_pool(EFI_LOADER_DATA,
sizeof(struct efi_tcg2_event) +
sizeof(struct uefi_image_load_event),
(void **)&efi_tcg2_event);
if (ret != EFI_SUCCESS) {
efi_st_error("Out of memory\n");
return EFI_ST_FAILURE;
}
efi_tcg2_event->size = sizeof(struct efi_tcg2_event) +
sizeof(struct uefi_image_load_event);
efi_tcg2_event->header.header_size = sizeof(struct efi_tcg2_event_header);
efi_tcg2_event->header.header_version = 1;
efi_tcg2_event->header.pcr_index = 6;
efi_tcg2_event->header.event_type = EV_EFI_RUNTIME_SERVICES_DRIVER;
image_load_event.image_location_in_memory = 0x12345678;
image_load_event.image_length_in_memory = 0x300000;
image_load_event.image_link_time_address = 0x87654321;
image_load_event.length_of_device_path = 0;
boottime->copy_mem(efi_tcg2_event->event, &image_load_event,
sizeof(struct uefi_image_load_event));
ret = setup_boot_variable();
if (ret != EFI_SUCCESS)
return EFI_ST_FAILURE;
ret = setup_smbios_table(systable);
if (ret != EFI_SUCCESS)
return EFI_ST_FAILURE;
ret = boottime->allocate_pool(EFI_LOADER_DATA,
(EFI_TCG2_MAX_PCR_INDEX + 1) *
TPM2_SHA256_DIGEST_SIZE,
(void **)&pcrs);
if (ret != EFI_SUCCESS) {
efi_st_error("Out of memory\n");
return EFI_ST_FAILURE;
}
boottime->set_mem(pcrs, (EFI_TCG2_MAX_PCR_INDEX + 1) * TPM2_SHA256_DIGEST_SIZE, 0);
/* setup expected PCRs per architecture */
boottime->copy_mem(&expected_pcrs[4], &expected_pcrs_per_arch[0], TPM2_SHA256_DIGEST_SIZE);
boottime->copy_mem(&expected_pcrs[6], &expected_pcrs_per_arch[1], TPM2_SHA256_DIGEST_SIZE);
return EFI_ST_SUCCESS;
}
/**
* efi_status_t get_manufacturer_id() - Get manufacturer_id through submit_command API
*
* @tcg2 tcg2 protocol
* @manufacturer_id pointer to the manufacturer_id
* Return: status code
*/
static efi_status_t get_manufacturer_id(struct efi_tcg2_protocol *tcg2, u32 *manufacturer_id)
{
efi_status_t ret;
u8 cmd[TPM2_CMD_BUF_SIZE] = {
tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
tpm_u32(22), /* Length */
tpm_u32(TPM2_CC_GET_CAPABILITY), /* Command code */
tpm_u32(TPM2_CAP_TPM_PROPERTIES), /* Capability */
tpm_u32(TPM2_PT_MANUFACTURER), /* Property */
tpm_u32(1), /* Property count */
};
u8 resp[TPM2_CMD_BUF_SIZE];
unsigned int value_off;
ret = tcg2->submit_command(tcg2, 22, cmd,
TPM2_CMD_BUF_SIZE, resp);
if (ret != EFI_SUCCESS)
return ret;
/*
* In the response buffer, the properties are located after the:
* tag (u16), response size (u32), response code (u32),
* YES/NO flag (u8), TPM_CAP (u32).
* The value is located after count (u32), property (u32).
*/
value_off = sizeof(u16) + sizeof(u32) + sizeof(u32) +
sizeof(u8) + sizeof(u32) + sizeof(u32) + sizeof(u32);
*manufacturer_id = get_unaligned_be32(&resp[value_off]);
return ret;
}
/**
* efi_status_t get_manufacturer_id_buffer_small() - call submit_command with small resp buffer
*
* @tcg2 tcg2 protocol
* @manufacturer_id pointer to the manufacturer_id
* Return: status code
*/
static efi_status_t get_manufacturer_id_buffer_small(struct efi_tcg2_protocol *tcg2)
{
efi_status_t ret;
u8 cmd[TPM2_CMD_BUF_SIZE] = {
tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
tpm_u32(22), /* Length */
tpm_u32(TPM2_CC_GET_CAPABILITY), /* Command code */
tpm_u32(TPM2_CAP_TPM_PROPERTIES), /* Capability */
tpm_u32(TPM2_PT_MANUFACTURER), /* Property */
tpm_u32(1), /* Property count */
};
u8 resp[1]; /* set smaller buffer than expected */
ret = tcg2->submit_command(tcg2, 22, cmd, 1, resp);
return ret;
}
/**
* efi_status_t read_pcr() - Read the PCR from the TPM device
*
* @tcg2 tcg2 protocol
* @idx pcr index to read
* Return: status code
*/
static efi_status_t read_pcr(struct efi_tcg2_protocol *tcg2, u32 idx)
{
efi_status_t ret;
u32 cmd_len = 17 + IDX_ARRAY_SZ;
u8 cmd[TPM2_CMD_BUF_SIZE] = {
tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
tpm_u32(cmd_len), /* Length */
tpm_u32(TPM2_CC_PCR_READ), /* Command code */
/* TPML_PCR_SELECTION */
tpm_u32(1), /* Number of selections */
tpm_u16(TPM2_ALG_SHA256), /* Algorithm of the hash */
IDX_ARRAY_SZ, /* Array size for selection */
/* bitmap(idx), Selected PCR bitmap */
};
u8 resp[TPM2_CMD_BUF_SIZE];
u32 pcr_sel_idx = idx / 8;
u8 pcr_sel_bit = BIT(idx % 8);
cmd[17 + pcr_sel_idx] = pcr_sel_bit;
ret = tcg2->submit_command(tcg2, cmd_len, cmd,
TPM2_CMD_BUF_SIZE, resp);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->submit_command fail to read PCR\n");
return ret;
}
boottime->copy_mem(pcrs[idx], &resp[TPM2_PCR_READ_HEADER_SIZE],
TPM2_SHA256_DIGEST_SIZE);
return ret;
}
/**
* int validate_pcrs() - Compare the expected and actual pcrs
*
* Return: status code
*/
static int validate_pcrs(void)
{
u32 i;
/*
* - Skip PCR[0] validation. PCR[0] contains U-Boot version measurement
* it contains the commit hash, so the measurement varies every build
* with different commit hash.
* - Skip PCR[7] validation. PCR[7] contains UEFI Secure Boot variables
* measurement. These variables can not be updated through efi_selftest and
* vary depending on the platform.
* - Skip PCR[17..22] validation, they are not used in TCG PC Client
* Platform Firmware Profile Specification
*/
for (i = 1; i < (EFI_TCG2_MAX_PCR_INDEX + 1); i++) {
if (i == 7 || (i > 16 && i < 23))
continue; /* skip validation */
if (memcmp(pcrs[i], expected_pcrs[i], TPM2_SHA256_DIGEST_SIZE)) {
efi_st_error("PCR[%d] is not the expected value\n", i);
return EFI_ST_FAILURE;
}
}
return EFI_ST_SUCCESS;
}
/**
* efi_st_tcg2_execute() - execute test
*
* Call EFI_TCG2_PROTOCOL services and check the
* Measured Boot behavior.
*
* Return: status code
*/
static int efi_st_tcg2_execute(void)
{
struct efi_tcg2_protocol *tcg2;
struct efi_tcg2_boot_service_capability capability;
efi_status_t ret;
u32 active_pcr_banks;
u64 eventlog, eventlog_last_entry;
bool eventlog_truncated;
efi_handle_t handle;
efi_uintn_t exit_data_size = 0;
u16 *exit_data = NULL;
u32 i;
u32 manufacturer_id;
ret = boottime->locate_protocol(&guid_tcg2, NULL, (void **)&tcg2);
if (ret != EFI_SUCCESS) {
efi_st_error("TCG2 protocol is not available.\n");
return EFI_ST_FAILURE;
}
/* EFI_TCG2_PROTOCOL.GetCapability test */
capability.size = sizeof(struct efi_tcg2_boot_service_capability) - 1;
ret = tcg2->get_capability(tcg2, &capability);
if (ret != EFI_BUFFER_TOO_SMALL) {
efi_st_error("tcg2->get_capability on small buffer failed\n");
return EFI_ST_FAILURE;
}
capability.size = sizeof(struct efi_tcg2_boot_service_capability);
ret = tcg2->get_capability(tcg2, &capability);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->get_capability failed\n");
return EFI_ST_FAILURE;
}
if (!capability.tpm_present_flag) {
efi_st_error("TPM not present\n");
return EFI_ST_FAILURE;
}
efi_st_printf("TPM supports 0x%.8x event logs\n",
capability.supported_event_logs);
/* EFI_TCG2_PROTOCOL.GetActivePcrBanks test */
ret = tcg2->get_active_pcr_banks(tcg2, &active_pcr_banks);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->get_active_pcr_banks failed\n");
return EFI_ST_FAILURE;
}
if (active_pcr_banks != capability.active_pcr_banks) {
efi_st_error("tcg2->get_active_pcr_banks return wrong value\n");
return EFI_ST_FAILURE;
}
/* EFI_TCG2_PROTOCOL.HashLogExtendEvent test */
ret = tcg2->hash_log_extend_event(tcg2, EFI_TCG2_EXTEND_ONLY,
(uintptr_t)image,
img.length, efi_tcg2_event);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->hash_log_extend_event(EXTEND_ONLY) failed\n");
return EFI_ST_FAILURE;
}
ret = tcg2->hash_log_extend_event(tcg2, PE_COFF_IMAGE, (uintptr_t)image,
img.length, efi_tcg2_event);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->hash_log_extend_event(PE_COFF_IMAGE) failed\n");
return EFI_ST_FAILURE;
}
/* EFI_TCG2_PROTOCOL.SubmitCommand test */
ret = get_manufacturer_id_buffer_small(tcg2);
if (ret != EFI_OUT_OF_RESOURCES) {
efi_st_error("get_manufacturer_id buffer too small failed\n");
return EFI_ST_FAILURE;
}
ret = get_manufacturer_id(tcg2, &manufacturer_id);
if (ret != EFI_SUCCESS) {
efi_st_error("get_manufacturer_id failed\n");
return EFI_ST_FAILURE;
}
if (capability.manufacturer_id != manufacturer_id) {
efi_st_error("tcg2->submit_command test failed\n");
return EFI_ST_FAILURE;
}
/* tcg2_measure_pe_image test */
ret = boottime->load_image(false, image_handle, NULL, image,
img.length, &handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to load image\n");
return EFI_ST_FAILURE;
}
/* measure ready_to_boot event(boot variables, smbios table, etc.) */
/* TODO: add GPT measurement test */
ret = boottime->start_image(handle, &exit_data_size, &exit_data);
if (ret != EFI_UNSUPPORTED) {
efi_st_error("Wrong return value from application\n");
return EFI_ST_FAILURE;
}
ret = boottime->free_pool(exit_data);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to free exit data\n");
return EFI_ST_FAILURE;
}
/* validate PCR read from the TPM device */
for (i = 0; i < (EFI_TCG2_MAX_PCR_INDEX + 1); i++) {
ret = read_pcr(tcg2, i);
if (ret != EFI_SUCCESS) {
efi_st_error("read pcr error\n");
return EFI_ST_FAILURE;
}
}
if (validate_pcrs()) {
efi_st_error("PCR validation failed\n");
return EFI_ST_FAILURE;
}
/* EFI_TCG2_PROTOCOL.GetEventLog test */
ret = tcg2->get_eventlog(tcg2, TCG2_EVENT_LOG_FORMAT_TCG_2, &eventlog,
&eventlog_last_entry, &eventlog_truncated);
if (ret != EFI_SUCCESS) {
efi_st_error("tcg2->get_eventlog failed\n");
return EFI_ST_FAILURE;
}
/* TODO: eventlog format check */
return EFI_ST_SUCCESS;
}
/*
* efi_st_tcg2_teardown() - Tear down unit test
*
* Return: EFI_ST_SUCCESS for success
*/
static int efi_st_tcg2_teardown(void)
{
efi_status_t r = EFI_ST_SUCCESS;
if (image) {
r = boottime->free_pool(image);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to free image\n");
return EFI_ST_FAILURE;
}
}
if (efi_tcg2_event) {
r = boottime->free_pool(efi_tcg2_event);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to free efi_tcg2_event\n");
return EFI_ST_FAILURE;
}
}
if (pcrs) {
r = boottime->free_pool(pcrs);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to free pcr\n");
return EFI_ST_FAILURE;
}
}
r = restore_boot_variable();
if (r != EFI_SUCCESS) {
efi_st_error("Failed to restore boot variables\n");
return EFI_ST_FAILURE;
}
/*
* Restore SMBIOS table
* If orig_smbios_table is NULL, calling install_configuration_table()
* removes dummy SMBIOS table form systab.
*/
r = boottime->install_configuration_table(&smbios_guid, orig_smbios_table);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to restore SMBOIS table\n");
return EFI_ST_FAILURE;
}
if (dmi_addr) {
r = boottime->free_pages(dmi_addr, 1);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to free dummy smbios table\n");
return EFI_ST_FAILURE;
}
}
return r;
}
EFI_UNIT_TEST(tcg2) = {
.name = "tcg2",
.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
.execute = efi_st_tcg2_execute,
.setup = efi_st_tcg2_setup,
.teardown = efi_st_tcg2_teardown,
.on_request = true,
};
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