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authorPhilipp Deppenwiese <zaolin@das-labor.org>2017-10-18 17:13:07 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2018-01-18 01:35:31 +0000
commit64e2d19082636de9e82674ccfca574269bb34712 (patch)
treedfe44c9b1cebbb611b99474c1ee096e23f930796 /src/security/tpm
parent4fef7818ecd002e5971ea6287e402fd9276b7266 (diff)
downloadcoreboot-64e2d19082636de9e82674ccfca574269bb34712.tar.xz
security/tpm: Move tpm TSS and TSPI layer to security section
* Move code from src/lib and src/include into src/security/tpm * Split TPM TSS 1.2 and 2.0 * Fix header includes * Add a new directory structure with kconfig and makefile includes Change-Id: Id15a9aa6bd367560318dfcfd450bf5626ea0ec2b Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22103 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/security/tpm')
-rw-r--r--src/security/tpm/Kconfig69
-rw-r--r--src/security/tpm/Makefile.inc12
-rw-r--r--src/security/tpm/antirollback.h81
-rw-r--r--src/security/tpm/tcg-1.2/tlcl.c353
-rw-r--r--src/security/tpm/tcg-1.2/tlcl_internal.h65
-rw-r--r--src/security/tpm/tcg-1.2/tlcl_structures.h164
-rw-r--r--src/security/tpm/tcg-2.0/tpm2_marshaling.c559
-rw-r--r--src/security/tpm/tcg-2.0/tpm2_marshaling.h46
-rw-r--r--src/security/tpm/tcg-2.0/tpm2_tlcl.c438
-rw-r--r--src/security/tpm/tcg-2.0/tpm2_tlcl_structures.h373
-rw-r--r--src/security/tpm/tlcl.h177
-rw-r--r--src/security/tpm/tpm.h102
-rw-r--r--src/security/tpm/tpm_error_messages.h255
-rw-r--r--src/security/tpm/tss_constants.h100
14 files changed, 2794 insertions, 0 deletions
diff --git a/src/security/tpm/Kconfig b/src/security/tpm/Kconfig
new file mode 100644
index 0000000000..111f91a5c1
--- /dev/null
+++ b/src/security/tpm/Kconfig
@@ -0,0 +1,69 @@
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2017 Philipp Deppenwiese, Facebook, Inc.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+
+menu "Trusted Platform Module"
+
+config TPM
+ bool
+ default n
+ select LPC_TPM if MAINBOARD_HAS_LPC_TPM
+ select I2C_TPM if !MAINBOARD_HAS_LPC_TPM && !SPI_TPM
+ help
+ Enable this option to enable TPM support in coreboot.
+
+ If unsure, say N.
+
+config TPM2
+ bool
+ select LPC_TPM if MAINBOARD_HAS_LPC_TPM
+ select I2C_TPM if !MAINBOARD_HAS_LPC_TPM && !SPI_TPM
+ help
+ Enable this option to enable TPM2 support in coreboot.
+
+ If unsure, say N.
+
+config DEBUG_TPM
+ bool "Output verbose TPM debug messages"
+ default n
+ depends on TPM || TPM2
+ help
+ This option enables additional TPM related debug messages.
+
+config MAINBOARD_HAS_TPM_CR50
+ bool
+ default y if MAINBOARD_HAS_SPI_TPM_CR50 || MAINBOARD_HAS_I2C_TPM_CR50
+ default n
+ select MAINBOARD_HAS_TPM2
+ select POWER_OFF_ON_CR50_UPDATE if ARCH_X86
+
+config POWER_OFF_ON_CR50_UPDATE
+ bool
+ help
+ Power off machine while waiting for CR50 update to take effect.
+
+config MAINBOARD_HAS_LPC_TPM
+ bool
+ default n
+ help
+ Board has TPM support
+
+config MAINBOARD_HAS_TPM2
+ bool
+ default n
+ help
+ There is a TPM device installed on the mainboard, and it is
+ compliant with version 2 TCG TPM specification. Could be connected
+ over LPC, SPI or I2C.
+
+endmenu # Trusted Platform Module (tpm)
diff --git a/src/security/tpm/Makefile.inc b/src/security/tpm/Makefile.inc
new file mode 100644
index 0000000000..48e70107e0
--- /dev/null
+++ b/src/security/tpm/Makefile.inc
@@ -0,0 +1,12 @@
+verstage-$(CONFIG_TPM) += tcg-1.2/tlcl.c
+verstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_marshaling.c
+verstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_tlcl.c
+
+ifeq ($(CONFIG_VBOOT_SEPARATE_VERSTAGE),y)
+romstage-$(CONFIG_TPM) += tcg-1.2/tlcl.c
+romstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_marshaling.c
+romstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_tlcl.c
+endif # CONFIG_VBOOT_SEPARATE_VERSTAGE
+
+ramstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_marshaling.c
+ramstage-$(CONFIG_TPM2) += tcg-2.0/tpm2_tlcl.c
diff --git a/src/security/tpm/antirollback.h b/src/security/tpm/antirollback.h
new file mode 100644
index 0000000000..d1bc433dcd
--- /dev/null
+++ b/src/security/tpm/antirollback.h
@@ -0,0 +1,81 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Functions for querying, manipulating and locking rollback indices
+ * stored in the TPM NVRAM.
+ */
+
+#ifndef ANTIROLLBACK_H_
+#define ANTIROLLBACK_H_
+
+#include "tss_constants.h"
+
+struct vb2_context;
+enum vb2_pcr_digest;
+
+/* TPM NVRAM location indices. */
+#define FIRMWARE_NV_INDEX 0x1007
+#define KERNEL_NV_INDEX 0x1008
+/* 0x1009 used to be used as a backup space. Think of conflicts if you
+ * want to use 0x1009 for something else. */
+#define BACKUP_NV_INDEX 0x1009
+#define FWMP_NV_INDEX 0x100a
+#define REC_HASH_NV_INDEX 0x100b
+#define REC_HASH_NV_SIZE VB2_SHA256_DIGEST_SIZE
+
+/* Structure definitions for TPM spaces */
+
+/* Flags for firmware space */
+
+/*
+ * Last boot was developer mode. TPM ownership is cleared when transitioning
+ * to/from developer mode.
+ */
+#define FLAG_LAST_BOOT_DEVELOPER 0x01
+
+/* All functions return TPM_SUCCESS (zero) if successful, non-zero if error */
+
+uint32_t antirollback_read_space_firmware(struct vb2_context *ctx);
+
+/**
+ * Write may be called if the versions change.
+ */
+uint32_t antirollback_write_space_firmware(struct vb2_context *ctx);
+
+/**
+ * Lock must be called.
+ */
+uint32_t antirollback_lock_space_firmware(void);
+
+/* Read recovery hash data from TPM. */
+uint32_t antirollback_read_space_rec_hash(uint8_t *data, uint32_t size);
+/* Write new hash data to recovery space in TPM. */
+uint32_t antirollback_write_space_rec_hash(const uint8_t *data, uint32_t size);
+/* Lock down recovery hash space in TPM. */
+uint32_t antirollback_lock_space_rec_hash(void);
+
+/****************************************************************************/
+
+/*
+ * The following functions are internal apis, listed here for use by unit tests
+ * only.
+ */
+
+/**
+ * Ask vboot for a digest and extend a TPM PCR with it.
+ */
+uint32_t tpm_extend_pcr(struct vb2_context *ctx, int pcr,
+ enum vb2_pcr_digest which_digest);
+
+/**
+ * Issue a TPM_Clear and reenable/reactivate the TPM.
+ */
+uint32_t tpm_clear_and_reenable(void);
+
+/**
+ * Start the TPM and establish the root of trust for the antirollback mechanism.
+ */
+uint32_t setup_tpm(struct vb2_context *ctx);
+
+#endif /* ANTIROLLBACK_H_ */
diff --git a/src/security/tpm/tcg-1.2/tlcl.c b/src/security/tpm/tcg-1.2/tlcl.c
new file mode 100644
index 0000000000..c7fcfcb7d6
--- /dev/null
+++ b/src/security/tpm/tcg-1.2/tlcl.c
@@ -0,0 +1,353 @@
+/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* A lightweight TPM command library.
+ *
+ * The general idea is that TPM commands are array of bytes whose
+ * fields are mostly compile-time constant. The goal is to build much
+ * of the commands at compile time (or build time) and change some of
+ * the fields at run time as needed. The code in
+ * utility/tlcl_generator.c builds structures containing the commands,
+ * as well as the offsets of the fields that need to be set at run
+ * time.
+ */
+
+#include <arch/early_variables.h>
+#include <assert.h>
+#include <string.h>
+#include <security/tpm/tpm.h>
+#include <vb2_api.h>
+#include "tlcl_internal.h"
+#include "tlcl_structures.h"
+#include "../tlcl.h"
+
+#ifdef FOR_TEST
+#include <stdio.h>
+#define VBDEBUG(format, args...) printf(format, ## args)
+#else
+#include <console/console.h>
+#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args)
+#endif
+
+static int tpm_send_receive(const uint8_t *request,
+ uint32_t request_length,
+ uint8_t *response,
+ uint32_t *response_length)
+{
+ size_t len = *response_length;
+ if (tis_sendrecv(request, request_length, response, &len))
+ return VB2_ERROR_UNKNOWN;
+ /* check 64->32bit overflow and (re)check response buffer overflow */
+ if (len > *response_length)
+ return VB2_ERROR_UNKNOWN;
+ *response_length = len;
+ return VB2_SUCCESS;
+}
+
+/* Sets the size field of a TPM command. */
+static inline void set_tpm_command_size(uint8_t *buffer, uint32_t size)
+{
+ to_tpm_uint32(buffer + sizeof(uint16_t), size);
+}
+
+/* Gets the size field of a TPM command. */
+__attribute__((unused))
+static inline int tpm_command_size(const uint8_t *buffer)
+{
+ uint32_t size;
+ from_tpm_uint32(buffer + sizeof(uint16_t), &size);
+ return (int) size;
+}
+
+/* Gets the code field of a TPM command. */
+static inline int tpm_command_code(const uint8_t *buffer)
+{
+ uint32_t code;
+ from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code);
+ return code;
+}
+
+/* Gets the return code field of a TPM result. */
+static inline int tpm_return_code(const uint8_t *buffer)
+{
+ return tpm_command_code(buffer);
+}
+
+/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or
+ * DOING_SELFTEST errors are returned.
+ */
+static uint32_t tlcl_send_receive_no_retry(const uint8_t *request,
+ uint8_t *response, int max_length)
+{
+ uint32_t response_length = max_length;
+ uint32_t result;
+
+ result = tpm_send_receive(request, tpm_command_size(request),
+ response, &response_length);
+ if (result != 0) {
+ /* Communication with TPM failed, so response is garbage */
+ VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n",
+ tpm_command_code(request), result);
+ return result;
+ }
+ /* Otherwise, use the result code from the response */
+ result = tpm_return_code(response);
+
+ /* TODO: add paranoia about returned response_length vs. max_length
+ * (and possibly expected length from the response header). See
+ * crosbug.com/17017 */
+
+ VBDEBUG("TPM: command 0x%x returned 0x%x\n",
+ tpm_command_code(request), result);
+
+return result;
+}
+
+
+/* Sends a TPM command and gets a response. Returns 0 if success or the TPM
+ * error code if error. Waits for the self test to complete if needed. */
+uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response,
+ int max_length)
+{
+ uint32_t result = tlcl_send_receive_no_retry(request, response,
+ max_length);
+ /* If the command fails because the self test has not completed, try it
+ * again after attempting to ensure that the self test has completed. */
+ if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) {
+ result = tlcl_continue_self_test();
+ if (result != TPM_SUCCESS)
+ return result;
+#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE)
+ /* Retry only once */
+ result = tlcl_send_receive_no_retry(request, response,
+ max_length);
+#else
+ /* This needs serious testing. The TPM specification says: "iii.
+ * The caller MUST wait for the actions of TPM_ContinueSelfTest
+ * to complete before reissuing the command C1." But, if
+ * ContinueSelfTest is non-blocking, how do we know that the
+ * actions have completed other than trying again? */
+ do {
+ result = tlcl_send_receive_no_retry(request, response,
+ max_length);
+ } while (result == TPM_E_DOING_SELFTEST);
+#endif
+ }
+ return result;
+}
+
+/* Sends a command and returns the error code. */
+static uint32_t send(const uint8_t *command)
+{
+ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
+ return tlcl_send_receive(command, response, sizeof(response));
+}
+
+/* Exported functions. */
+
+static uint8_t tlcl_init_done CAR_GLOBAL;
+
+uint32_t tlcl_lib_init(void)
+{
+ uint8_t done = car_get_var(tlcl_init_done);
+ if (done)
+ return VB2_SUCCESS;
+
+ if (tis_init())
+ return VB2_ERROR_UNKNOWN;
+ if (tis_open())
+ return VB2_ERROR_UNKNOWN;
+
+ car_set_var(tlcl_init_done, 1);
+
+ return VB2_SUCCESS;
+}
+
+uint32_t tlcl_startup(void)
+{
+ VBDEBUG("TPM: Startup\n");
+ return send(tpm_startup_cmd.buffer);
+}
+
+uint32_t tlcl_resume(void)
+{
+ VBDEBUG("TPM: Resume\n");
+ return send(tpm_resume_cmd.buffer);
+}
+
+uint32_t tlcl_self_test_full(void)
+{
+ VBDEBUG("TPM: Self test full\n");
+ return send(tpm_selftestfull_cmd.buffer);
+}
+
+uint32_t tlcl_continue_self_test(void)
+{
+ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
+ VBDEBUG("TPM: Continue self test\n");
+ /* Call the No Retry version of SendReceive to avoid recursion. */
+ return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer,
+ response, sizeof(response));
+}
+
+uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size)
+{
+ struct s_tpm_nv_definespace_cmd cmd;
+ VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size);
+ memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd));
+ to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index);
+ to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm);
+ to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size);
+ return send(cmd.buffer);
+}
+
+uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length)
+{
+ struct s_tpm_nv_write_cmd cmd;
+ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
+ const int total_length =
+ kTpmRequestHeaderLength + kWriteInfoLength + length;
+
+ VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length);
+ memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd));
+ assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE);
+ set_tpm_command_size(cmd.buffer, total_length);
+
+ to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index);
+ to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length);
+ memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length);
+
+ return tlcl_send_receive(cmd.buffer, response, sizeof(response));
+}
+
+uint32_t tlcl_read(uint32_t index, void *data, uint32_t length)
+{
+ struct s_tpm_nv_read_cmd cmd;
+ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
+ uint32_t result_length;
+ uint32_t result;
+
+ VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length);
+ memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd));
+ to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index);
+ to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length);
+
+ result = tlcl_send_receive(cmd.buffer, response, sizeof(response));
+ if (result == TPM_SUCCESS && length > 0) {
+ uint8_t *nv_read_cursor = response + kTpmResponseHeaderLength;
+ from_tpm_uint32(nv_read_cursor, &result_length);
+ nv_read_cursor += sizeof(uint32_t);
+ memcpy(data, nv_read_cursor, result_length);
+ }
+
+ return result;
+}
+
+
+uint32_t tlcl_assert_physical_presence(void)
+{
+ VBDEBUG("TPM: Asserting physical presence\n");
+ return send(tpm_ppassert_cmd.buffer);
+}
+
+uint32_t tlcl_physical_presence_cmd_enable(void)
+{
+ VBDEBUG("TPM: Enable the physical presence command\n");
+ return send(tpm_ppenable_cmd.buffer);
+}
+
+uint32_t tlcl_finalize_physical_presence(void)
+{
+ VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n");
+ return send(tpm_finalizepp_cmd.buffer);
+}
+
+uint32_t tlcl_set_nv_locked(void)
+{
+ VBDEBUG("TPM: Set NV locked\n");
+ return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0);
+}
+
+uint32_t tlcl_force_clear(void)
+{
+ VBDEBUG("TPM: Force clear\n");
+ return send(tpm_forceclear_cmd.buffer);
+}
+
+uint32_t tlcl_set_enable(void)
+{
+ VBDEBUG("TPM: Enabling TPM\n");
+ return send(tpm_physicalenable_cmd.buffer);
+}
+
+uint32_t tlcl_set_deactivated(uint8_t flag)
+{
+ struct s_tpm_physicalsetdeactivated_cmd cmd;
+ VBDEBUG("TPM: SetDeactivated(%d)\n", flag);
+ memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd));
+ *(cmd.buffer + cmd.deactivated) = flag;
+ return send(cmd.buffer);
+}
+
+uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags)
+{
+ uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
+ uint32_t size;
+ uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response,
+ sizeof(response));
+ if (result != TPM_SUCCESS)
+ return result;
+ from_tpm_uint32(response + kTpmResponseHeaderLength, &size);
+ assert(size == sizeof(TPM_PERMANENT_FLAGS));
+ memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size),
+ sizeof(TPM_PERMANENT_FLAGS));
+ return result;
+}
+
+uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated,
+ uint8_t *nvlocked)
+{
+ TPM_PERMANENT_FLAGS pflags;
+ uint32_t result = tlcl_get_permanent_flags(&pflags);
+ if (result == TPM_SUCCESS) {
+ if (disable)
+ *disable = pflags.disable;
+ if (deactivated)
+ *deactivated = pflags.deactivated;
+ if (nvlocked)
+ *nvlocked = pflags.nvLocked;
+ VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n",
+ pflags.disable, pflags.deactivated, pflags.nvLocked);
+ }
+ return result;
+}
+
+uint32_t tlcl_set_global_lock(void)
+{
+ uint32_t x;
+ VBDEBUG("TPM: Set global lock\n");
+ return tlcl_write(TPM_NV_INDEX0, (uint8_t *) &x, 0);
+}
+
+uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest,
+ uint8_t *out_digest)
+{
+ struct s_tpm_extend_cmd cmd;
+ uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength];
+ uint32_t result;
+
+ memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd));
+ to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num);
+ memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength);
+
+ result = tlcl_send_receive(cmd.buffer, response, sizeof(response));
+ if (result != TPM_SUCCESS)
+ return result;
+
+ if (out_digest)
+ memcpy(out_digest, response + kTpmResponseHeaderLength,
+ kPcrDigestLength);
+ return result;
+}
diff --git a/src/security/tpm/tcg-1.2/tlcl_internal.h b/src/security/tpm/tcg-1.2/tlcl_internal.h
new file mode 100644
index 0000000000..3648be622a
--- /dev/null
+++ b/src/security/tpm/tcg-1.2/tlcl_internal.h
@@ -0,0 +1,65 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef TPM_LITE_TLCL_INTERNAL_H_
+#define TPM_LITE_TLCL_INTERNAL_H_
+
+/*
+ * These numbers derive from adding the sizes of command fields as shown in the
+ * TPM commands manual.
+ */
+#define kTpmRequestHeaderLength 10
+#define kTpmResponseHeaderLength 10
+#define kTpmReadInfoLength 12
+#define kEncAuthLength 20
+#define kPcrDigestLength 20
+
+
+/*
+ * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM
+ * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command
+ * buffer into a variable.
+ */
+__attribute__((unused))
+static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x)
+{
+ buffer[0] = (uint8_t)(x >> 24);
+ buffer[1] = (uint8_t)((x >> 16) & 0xff);
+ buffer[2] = (uint8_t)((x >> 8) & 0xff);
+ buffer[3] = (uint8_t)(x & 0xff);
+}
+
+/*
+ * See comment for above function.
+ */
+__attribute__((unused))
+static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x)
+{
+ *x = ((buffer[0] << 24) |
+ (buffer[1] << 16) |
+ (buffer[2] << 8) |
+ buffer[3]);
+}
+
+/*
+ * See comment for above function.
+ */
+__attribute__((unused))
+static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x)
+{
+ buffer[0] = (uint8_t)(x >> 8);
+ buffer[1] = (uint8_t)(x & 0xff);
+}
+
+/*
+ * See comment for above function.
+ */
+__attribute__((unused))
+static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x)
+{
+ *x = (buffer[0] << 8) | buffer[1];
+}
+
+#endif /* TPM_LITE_TLCL_INTERNAL_H_ */
diff --git a/src/security/tpm/tcg-1.2/tlcl_structures.h b/src/security/tpm/tcg-1.2/tlcl_structures.h
new file mode 100644
index 0000000000..880864ee50
--- /dev/null
+++ b/src/security/tpm/tcg-1.2/tlcl_structures.h
@@ -0,0 +1,164 @@
+/* This file is automatically generated */
+
+const struct s_tpm_extend_cmd{
+ uint8_t buffer[34];
+ uint16_t pcrNum;
+ uint16_t inDigest;
+} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, },
+10, 14, };
+
+const struct s_tpm_get_random_cmd{
+ uint8_t buffer[14];
+ uint16_t bytesRequested;
+} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, },
+10, };
+
+const struct s_tpm_getownership_cmd{
+ uint8_t buffer[22];
+} tpm_getownership_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65,
+ 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, },
+};
+
+const struct s_tpm_getpermissions_cmd{
+ uint8_t buffer[22];
+ uint16_t index;
+} tpm_getpermissions_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65,
+ 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, },
+18, };
+
+const struct s_tpm_getstclearflags_cmd{
+ uint8_t buffer[22];
+} tpm_getstclearflags_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65,
+ 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, },
+};
+
+const struct s_tpm_getflags_cmd{
+ uint8_t buffer[22];
+} tpm_getflags_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65,
+ 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, },
+};
+
+const struct s_tpm_physicalsetdeactivated_cmd{
+ uint8_t buffer[11];
+ uint16_t deactivated;
+} tpm_physicalsetdeactivated_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, },
+10, };
+
+const struct s_tpm_physicalenable_cmd{
+ uint8_t buffer[10];
+} tpm_physicalenable_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, },
+};
+
+const struct s_tpm_physicaldisable_cmd{
+ uint8_t buffer[10];
+} tpm_physicaldisable_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, },
+};
+
+const struct s_tpm_forceclear_cmd{
+ uint8_t buffer[10];
+} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, },
+};
+
+const struct s_tpm_readpubek_cmd{
+ uint8_t buffer[30];
+} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, },
+};
+
+const struct s_tpm_continueselftest_cmd{
+ uint8_t buffer[10];
+} tpm_continueselftest_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, },
+};
+
+const struct s_tpm_selftestfull_cmd{
+ uint8_t buffer[10];
+} tpm_selftestfull_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, },
+};
+
+const struct s_tpm_resume_cmd{
+ uint8_t buffer[12];
+} tpm_resume_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, },
+};
+
+const struct s_tpm_savestate_cmd{
+ uint8_t buffer[10];
+} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, },
+};
+
+const struct s_tpm_startup_cmd{
+ uint8_t buffer[12];
+} tpm_startup_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, },
+};
+
+const struct s_tpm_finalizepp_cmd{
+ uint8_t buffer[12];
+} tpm_finalizepp_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, },
+};
+
+const struct s_tpm_pplock_cmd{
+ uint8_t buffer[12];
+} tpm_pplock_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, },
+};
+
+const struct s_tpm_ppenable_cmd{
+ uint8_t buffer[12];
+} tpm_ppenable_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, },
+};
+
+const struct s_tpm_ppassert_cmd{
+ uint8_t buffer[12];
+} tpm_ppassert_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, },
+};
+
+const struct s_tpm_pcr_read_cmd{
+ uint8_t buffer[14];
+ uint16_t pcrNum;
+} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, },
+10, };
+
+const struct s_tpm_nv_read_cmd{
+ uint8_t buffer[22];
+ uint16_t index;
+ uint16_t length;
+} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, },
+10, 18, };
+
+const struct s_tpm_nv_write_cmd{
+ uint8_t buffer[256];
+ uint16_t index;
+ uint16_t length;
+ uint16_t data;
+} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, },
+10, 18, 22, };
+
+const struct s_tpm_nv_definespace_cmd{
+ uint8_t buffer[101];
+ uint16_t index;
+ uint16_t perm;
+ uint16_t size;
+} tpm_nv_definespace_cmd = {
+ {0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc,
+ 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17,
+ },
+ 12, 70, 77,
+};
+
+const int kWriteInfoLength = 12;
+const int kNvDataPublicPermissionsOffset = 60;
diff --git a/src/security/tpm/tcg-2.0/tpm2_marshaling.c b/src/security/tpm/tcg-2.0/tpm2_marshaling.c
new file mode 100644
index 0000000000..3ce09a4f8d
--- /dev/null
+++ b/src/security/tpm/tcg-2.0/tpm2_marshaling.c
@@ -0,0 +1,559 @@
+/*
+ * Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <arch/early_variables.h>
+#include <commonlib/iobuf.h>
+#include <console/console.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tpm2_marshaling.h"
+
+static uint16_t tpm_tag CAR_GLOBAL; /* Depends on the command type. */
+
+#define unmarshal_TPM_CAP(a, b) ibuf_read_be32(a, b)
+#define unmarshal_TPM_CC(a, b) ibuf_read_be32(a, b)
+#define unmarshal_TPM_PT(a, b) ibuf_read_be32(a, b)
+#define unmarshal_TPM_HANDLE(a, b) ibuf_read_be32(a, b)
+
+#define marshal_TPM_HANDLE(a, b) obuf_write_be32(a, b)
+#define marshal_TPMI_ALG_HASH(a, b) obuf_write_be16(a, b)
+
+static int marshal_startup(struct obuf *ob, struct tpm2_startup *cmd_body)
+{
+ return obuf_write_be16(ob, cmd_body->startup_type);
+}
+
+static int marshal_get_capability(struct obuf *ob,
+ struct tpm2_get_capability *cmd_body)
+{
+ int rc = 0;
+
+ rc |= obuf_write_be32(ob, cmd_body->capability);
+ rc |= obuf_write_be32(ob, cmd_body->property);
+ rc |= obuf_write_be32(ob, cmd_body->propertyCount);
+
+ return rc;
+}
+
+static int marshal_TPM2B(struct obuf *ob, TPM2B *data)
+{
+ int rc = 0;
+
+ rc |= obuf_write_be16(ob, data->size);
+ rc |= obuf_write(ob, data->buffer, data->size);
+
+ return rc;
+}
+
+static int marshal_TPMA_NV(struct obuf *ob, TPMA_NV *nv)
+{
+ uint32_t v;
+
+ memcpy(&v, nv, sizeof(v));
+ return obuf_write_be32(ob, v);
+}
+
+static int marshal_TPMS_NV_PUBLIC(struct obuf *ob, TPMS_NV_PUBLIC *nvpub)
+{
+ int rc = 0;
+
+ rc |= marshal_TPM_HANDLE(ob, nvpub->nvIndex);
+ rc |= marshal_TPMI_ALG_HASH(ob, nvpub->nameAlg);
+ rc |= marshal_TPMA_NV(ob, &nvpub->attributes);
+ rc |= marshal_TPM2B(ob, &nvpub->authPolicy.b);
+ rc |= obuf_write_be16(ob, nvpub->dataSize);
+
+ return rc;
+}
+
+static int marshal_TPMT_HA(struct obuf *ob, TPMT_HA *tpmtha)
+{
+ int rc = 0;
+
+ rc |= marshal_TPMI_ALG_HASH(ob, tpmtha->hashAlg);
+ rc |= obuf_write(ob, tpmtha->digest.sha256,
+ sizeof(tpmtha->digest.sha256));
+
+ return rc;
+}
+
+static int marshal_TPML_DIGEST_VALUES(struct obuf *ob,
+ TPML_DIGEST_VALUES *dvalues)
+{
+ int i;
+ int rc = 0;
+
+ rc |= obuf_write_be32(ob, dvalues->count);
+ for (i = 0; i < dvalues->count; i++)
+ rc |= marshal_TPMT_HA(ob, &dvalues->digests[i]);
+
+ return rc;
+}
+
+static int marshal_session_header(struct obuf *ob,
+ struct tpm2_session_header *session_header)
+{
+ int rc = 0;
+ struct obuf ob_sz;
+ size_t prev_written;
+
+ /* Snapshot current location to place size of header. */
+ if (obuf_splice_current(ob, &ob_sz, sizeof(uint32_t)) < 0)
+ return -1;
+
+ /* Write a size placeholder. */
+ rc |= obuf_write_be32(ob, 0);
+
+ /* Keep track of session header data size by tracking num written. */
+ prev_written = obuf_nr_written(ob);
+
+ rc |= obuf_write_be32(ob, session_header->session_handle);
+ rc |= obuf_write_be16(ob, session_header->nonce_size);
+ rc |= obuf_write(ob, session_header->nonce, session_header->nonce_size);
+ rc |= obuf_write_be8(ob, session_header->session_attrs);
+ rc |= obuf_write_be16(ob, session_header->auth_size);
+ rc |= obuf_write(ob, session_header->auth, session_header->auth_size);
+
+ /* Fill back in proper size of session header. */
+ rc |= obuf_write_be32(&ob_sz, obuf_nr_written(ob) - prev_written);
+
+ return rc;
+}
+
+/*
+ * Common session header can include one or two handles and an empty
+ * session_header structure.
+ */
+static int marshal_common_session_header(struct obuf *ob,
+ const uint32_t *handles,
+ size_t handle_count)
+{
+ size_t i;
+ struct tpm2_session_header session_header;
+ int rc = 0;
+
+ car_set_var(tpm_tag, TPM_ST_SESSIONS);
+
+ for (i = 0; i < handle_count; i++)
+ rc |= marshal_TPM_HANDLE(ob, handles[i]);
+
+ memset(&session_header, 0, sizeof(session_header));
+ session_header.session_handle = TPM_RS_PW;
+ rc |= marshal_session_header(ob, &session_header);
+
+ return rc;
+}
+
+static int marshal_nv_define_space(struct obuf *ob,
+ struct tpm2_nv_define_space_cmd *nvd_in)
+{
+ const uint32_t handle[] = { TPM_RH_PLATFORM };
+ struct obuf ob_sz;
+ size_t prev_written;
+ int rc = 0;
+
+ rc |= marshal_common_session_header(ob, handle, ARRAY_SIZE(handle));
+ rc |= marshal_TPM2B(ob, &nvd_in->auth.b);
+
+ /* Snapshot current location to place size field. */
+ if (obuf_splice_current(ob, &ob_sz, sizeof(uint16_t)) < 0)
+ return -1;
+
+ /* Put placeholder for size */
+ rc |= obuf_write_be16(ob, 0);
+
+ /* Keep track of nv define space data size by tracking num written. */
+ prev_written = obuf_nr_written(ob);
+
+ rc |= marshal_TPMS_NV_PUBLIC(ob, &nvd_in->publicInfo);
+ rc |= obuf_write_be16(&ob_sz, obuf_nr_written(ob) - prev_written);
+
+ return rc;
+}
+
+static int marshal_nv_write(struct obuf *ob,
+ struct tpm2_nv_write_cmd *command_body)
+{
+ int rc = 0;
+ uint32_t handles[] = { TPM_RH_PLATFORM, command_body->nvIndex };
+
+ rc |= marshal_common_session_header(ob, handles, ARRAY_SIZE(handles));
+ rc |= marshal_TPM2B(ob, &command_body->data.b);
+ rc |= obuf_write_be16(ob, command_body->offset);
+
+ return rc;
+}
+
+static int marshal_nv_write_lock(struct obuf *ob,
+ struct tpm2_nv_write_lock_cmd *command_body)
+{
+ uint32_t handles[] = { TPM_RH_PLATFORM, command_body->nvIndex };
+
+ return marshal_common_session_header(ob, handles, ARRAY_SIZE(handles));
+}
+
+static int marshal_pcr_extend(struct obuf *ob,
+ struct tpm2_pcr_extend_cmd *command_body)
+{
+ int rc = 0;
+ uint32_t handles[] = { command_body->pcrHandle };
+
+ rc |= marshal_common_session_header(ob, handles, ARRAY_SIZE(handles));
+ rc |= marshal_TPML_DIGEST_VALUES(ob, &command_body->digests);
+
+ return rc;
+}
+
+static int marshal_nv_read(struct obuf *ob,
+ struct tpm2_nv_read_cmd *command_body)
+{
+ int rc = 0;
+ uint32_t handles[] = { TPM_RH_PLATFORM, command_body->nvIndex };
+
+ rc |= marshal_common_session_header(ob, handles, ARRAY_SIZE(handles));
+ rc |= obuf_write_be16(ob, command_body->size);
+ rc |= obuf_write_be16(ob, command_body->offset);
+
+ return rc;
+}
+
+/* TPM2_Clear command does not require paramaters. */
+static int marshal_clear(struct obuf *ob)
+{
+ const uint32_t handle[] = { TPM_RH_PLATFORM };
+
+ return marshal_common_session_header(ob, handle, ARRAY_SIZE(handle));
+}
+
+static int marshal_selftest(struct obuf *ob,
+ struct tpm2_self_test *command_body)
+{
+ return obuf_write_be8(ob, command_body->yes_no);
+}
+
+static int marshal_hierarchy_control(struct obuf *ob,
+ struct tpm2_hierarchy_control_cmd *command_body)
+{
+ int rc = 0;
+ struct tpm2_session_header session_header;
+
+ car_set_var(tpm_tag, TPM_ST_SESSIONS);
+
+ rc |= marshal_TPM_HANDLE(ob, TPM_RH_PLATFORM);
+ memset(&session_header, 0, sizeof(session_header));
+ session_header.session_handle = TPM_RS_PW;
+ rc |= marshal_session_header(ob, &session_header);
+
+ rc |= marshal_TPM_HANDLE(ob, command_body->enable);
+ rc |= obuf_write_be8(ob, command_body->state);
+
+ return rc;
+}
+
+static int marshal_cr50_vendor_command(struct obuf *ob, void *command_body)
+{
+ int rc = 0;
+ uint16_t *sub_command = command_body;
+
+ switch (*sub_command) {
+ case TPM2_CR50_SUB_CMD_NVMEM_ENABLE_COMMITS:
+ rc |= obuf_write_be16(ob, *sub_command);
+ break;
+ case TPM2_CR50_SUB_CMD_TURN_UPDATE_ON:
+ rc |= obuf_write_be16(ob, sub_command[0]);
+ rc |= obuf_write_be16(ob, sub_command[1]);
+ break;
+ default:
+ /* Unsupported subcommand. */
+ printk(BIOS_WARNING, "Unsupported cr50 subcommand: 0x%04x\n",
+ *sub_command);
+ rc = -1;
+ break;
+ }
+ return rc;
+}
+
+int tpm_marshal_command(TPM_CC command, void *tpm_command_body, struct obuf *ob)
+{
+ struct obuf ob_hdr;
+ const size_t hdr_sz = sizeof(uint16_t) + 2 * sizeof(uint32_t);
+ int rc = 0;
+
+ car_set_var(tpm_tag, TPM_ST_NO_SESSIONS);
+
+ if (obuf_splice_current(ob, &ob_hdr, hdr_sz) < 0)
+ return -1;
+
+ /* Write TPM command header with placeholder field values. */
+ rc |= obuf_write_be16(ob, 0);
+ rc |= obuf_write_be32(ob, 0);
+ rc |= obuf_write_be32(ob, command);
+
+ if (rc != 0)
+ return rc;
+
+ switch (command) {
+ case TPM2_Startup:
+ rc |= marshal_startup(ob, tpm_command_body);
+ break;
+
+ case TPM2_GetCapability:
+ rc |= marshal_get_capability(ob, tpm_command_body);
+ break;
+
+ case TPM2_NV_Read:
+ rc |= marshal_nv_read(ob, tpm_command_body);
+ break;
+
+ case TPM2_NV_DefineSpace:
+ rc |= marshal_nv_define_space(ob, tpm_command_body);
+ break;
+
+ case TPM2_NV_Write:
+ rc |= marshal_nv_write(ob, tpm_command_body);
+ break;
+
+ case TPM2_NV_WriteLock:
+ rc |= marshal_nv_write_lock(ob, tpm_command_body);
+ break;
+
+ case TPM2_SelfTest:
+ rc |= marshal_selftest(ob, tpm_command_body);
+ break;
+
+ case TPM2_Hierarchy_Control:
+ rc |= marshal_hierarchy_control(ob, tpm_command_body);
+ break;
+
+ case TPM2_Clear:
+ rc |= marshal_clear(ob);
+ break;
+
+ case TPM2_PCR_Extend:
+ rc |= marshal_pcr_extend(ob, tpm_command_body);
+ break;
+
+ case TPM2_CR50_VENDOR_COMMAND:
+ rc |= marshal_cr50_vendor_command(ob, tpm_command_body);
+ break;
+
+ default:
+ printk(BIOS_INFO, "%s:%d:Request to marshal unsupported command %#x\n",
+ __FILE__, __LINE__, command);
+ rc = -1;
+ }
+
+ if (rc != 0)
+ return rc;
+
+ /* Fix up the command header with known values. */
+ rc |= obuf_write_be16(&ob_hdr, car_get_var(tpm_tag));
+ rc |= obuf_write_be32(&ob_hdr, obuf_nr_written(ob));
+
+ return rc;
+}
+
+static int unmarshal_get_capability(struct ibuf *ib,
+ struct get_cap_response *gcr)
+{
+ int i;
+ int rc = 0;
+
+ rc |= ibuf_read_be8(ib, &gcr->more_data);
+ rc |= unmarshal_TPM_CAP(ib, &gcr->cd.capability);
+
+ if (rc != 0)
+ return rc;
+
+ switch (gcr->cd.capability) {
+ case TPM_CAP_TPM_PROPERTIES:
+ if (ibuf_read_be32(ib, &gcr->cd.data.tpmProperties.count))
+ return -1;
+ if (gcr->cd.data.tpmProperties.count > ARRAY_SIZE
+ (gcr->cd.data.tpmProperties.tpmProperty)) {
+ printk(BIOS_INFO, "%s:%s:%d - %d - too many properties\n",
+ __FILE__, __func__, __LINE__,
+ gcr->cd.data.tpmProperties.count);
+ return -1;
+ }
+ for (i = 0; i < gcr->cd.data.tpmProperties.count; i++) {
+ TPMS_TAGGED_PROPERTY *pp;
+
+ pp = gcr->cd.data.tpmProperties.tpmProperty + i;
+ rc |= unmarshal_TPM_PT(ib, &pp->property);
+ rc |= ibuf_read_be32(ib, &pp->value);
+ }
+ break;
+ default:
+ printk(BIOS_ERR,
+ "%s:%d - unable to unmarshal capability response",
+ __func__, __LINE__);
+ printk(BIOS_ERR, " for %d\n", gcr->cd.capability);
+ rc = -1;
+ break;
+ }
+
+ return rc;
+}
+
+static int unmarshal_TPM2B_MAX_NV_BUFFER(struct ibuf *ib,
+ TPM2B_MAX_NV_BUFFER *nv_buffer)
+{
+ if (ibuf_read_be16(ib, &nv_buffer->t.size))
+ return -1;
+
+ nv_buffer->t.buffer = ibuf_oob_drain(ib, nv_buffer->t.size);
+
+ if (nv_buffer->t.buffer == NULL) {
+ printk(BIOS_ERR, "%s:%d - "
+ "size mismatch: expected %d, remaining %zd\n",
+ __func__, __LINE__, nv_buffer->t.size,
+ ibuf_remaining(ib));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int unmarshal_nv_read(struct ibuf *ib, struct nv_read_response *nvr)
+{
+ /* Total size of the parameter field. */
+ if (ibuf_read_be32(ib, &nvr->params_size))
+ return -1;
+
+ if (unmarshal_TPM2B_MAX_NV_BUFFER(ib, &nvr->buffer))
+ return -1;
+
+ if (nvr->params_size !=
+ (nvr->buffer.t.size + sizeof(nvr->buffer.t.size))) {
+ printk(BIOS_ERR,
+ "%s:%d - parameter/buffer %d/%d size mismatch",
+ __func__, __LINE__, nvr->params_size,
+ nvr->buffer.t.size);
+ return -1;
+ }
+
+ /*
+ * Let's ignore the authorisation section. It should be 5 bytes total,
+ * just confirm that this is the case and report any discrepancy.
+ */
+ if (ibuf_remaining(ib) != 5)
+ printk(BIOS_ERR,
+ "%s:%d - unexpected authorisation seciton size %zd\n",
+ __func__, __LINE__, ibuf_remaining(ib));
+
+ ibuf_oob_drain(ib, ibuf_remaining(ib));
+
+ return 0;
+}
+
+static int unmarshal_vendor_command(struct ibuf *ib,
+ struct vendor_command_response *vcr)
+{
+ if (ibuf_read_be16(ib, &vcr->vc_subcommand))
+ return -1;
+
+ switch (vcr->vc_subcommand) {
+ case TPM2_CR50_SUB_CMD_NVMEM_ENABLE_COMMITS:
+ break;
+ case TPM2_CR50_SUB_CMD_TURN_UPDATE_ON:
+ return ibuf_read_be8(ib, &vcr->num_restored_headers);
+ break;
+ default:
+ printk(BIOS_ERR,
+ "%s:%d - unsupported vendor command %#04x!\n",
+ __func__, __LINE__, vcr->vc_subcommand);
+ return -1;
+ }
+
+ return 0;
+}
+
+struct tpm2_response *tpm_unmarshal_response(TPM_CC command, struct ibuf *ib)
+{
+ static struct tpm2_response tpm2_static_resp CAR_GLOBAL;
+ struct tpm2_response *tpm2_resp = car_get_var_ptr(&tpm2_static_resp);
+ int rc = 0;
+
+ rc |= ibuf_read_be16(ib, &tpm2_resp->hdr.tpm_tag);
+ rc |= ibuf_read_be32(ib, &tpm2_resp->hdr.tpm_size);
+ rc |= unmarshal_TPM_CC(ib, &tpm2_resp->hdr.tpm_code);
+
+ if (rc != 0)
+ return NULL;
+
+ if (ibuf_remaining(ib) == 0) {
+ if (tpm2_resp->hdr.tpm_size != ibuf_nr_read(ib))
+ printk(BIOS_ERR,
+ "%s: size mismatch in response to command %#x\n",
+ __func__, command);
+ return tpm2_resp;
+ }
+
+ switch (command) {
+ case TPM2_Startup:
+ break;
+
+ case TPM2_GetCapability:
+ rc |= unmarshal_get_capability(ib, &tpm2_resp->gc);
+ break;
+
+ case TPM2_NV_Read:
+ rc |= unmarshal_nv_read(ib, &tpm2_resp->nvr);
+ break;
+
+ case TPM2_Hierarchy_Control:
+ case TPM2_Clear:
+ case TPM2_NV_DefineSpace:
+ case TPM2_NV_Write:
+ case TPM2_NV_WriteLock:
+ case TPM2_PCR_Extend:
+ /* Session data included in response can be safely ignored. */
+ ibuf_oob_drain(ib, ibuf_remaining(ib));
+ break;
+
+ case TPM2_CR50_VENDOR_COMMAND:
+ rc |= unmarshal_vendor_command(ib, &tpm2_resp->vcr);
+ break;
+
+ default:
+ {
+ size_t i;
+ size_t sz_left;
+ const uint8_t *data;
+
+ printk(BIOS_INFO, "%s:%d:"
+ "Request to unmarshal unexpected command %#x,"
+ " code %#x",
+ __func__, __LINE__, command,
+ tpm2_resp->hdr.tpm_code);
+
+ sz_left = ibuf_remaining(ib);
+ data = ibuf_oob_drain(ib, sz_left);
+
+ for (i = 0; i < sz_left; i++) {
+ if (!(i % 16))
+ printk(BIOS_INFO, "\n");
+ printk(BIOS_INFO, "%2.2x ", data[i]);
+ }
+ }
+ printk(BIOS_INFO, "\n");
+ return NULL;
+ }
+
+ if (ibuf_remaining(ib)) {
+ printk(BIOS_INFO,
+ "%s:%d got %d bytes back in response to %#x,"
+ " failed to parse (%zd)\n",
+ __func__, __LINE__, tpm2_resp->hdr.tpm_size,
+ command, ibuf_remaining(ib));
+ return NULL;
+ }
+
+ /* The entire message have been parsed. */
+ return tpm2_resp;
+}
diff --git a/src/security/tpm/tcg-2.0/tpm2_marshaling.h b/src/security/tpm/tcg-2.0/tpm2_marshaling.h
new file mode 100644
index 0000000000..5802044378
--- /dev/null
+++ b/src/security/tpm/tcg-2.0/tpm2_marshaling.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef __SRC_LIB_TPM2_MARSHALING_H
+#define __SRC_LIB_TPM2_MARSHALING_H
+
+#include <commonlib/iobuf.h>
+#include "tpm2_tlcl_structures.h"
+
+/* The below functions are used to serialize/deserialize TPM2 commands. */
+
+/**
+ * tpm_marshal_command
+ *
+ * Given a structure containing a TPM2 command, serialize the structure for
+ * sending it to the TPM.
+ *
+ * @command: code of the TPM2 command to marshal
+ * @tpm_command_body: a pointer to the command specific structure
+ * @ob: output buffer where command is marshaled to
+ *
+ * Returns 0 on success or -1 on error.
+ *
+ */
+int tpm_marshal_command(TPM_CC command, void *tpm_command_body,
+ struct obuf *ob);
+
+/**
+ * tpm_unmarshal_response
+ *
+ * Given a buffer received from the TPM in response to a certain command,
+ * deserialize the buffer into the expeced response structure.
+ *
+ * struct tpm2_response is a union of all possible responses.
+ *
+ * @command: code of the TPM2 command for which a response is unmarshaled
+ * @ib: input buffer containing the serialized response.
+ *
+ * Returns a pointer to the deserialized response or NULL in case of
+ * unmarshaling problems.
+ */
+struct tpm2_response *tpm_unmarshal_response(TPM_CC command, struct ibuf *ib);
+
+#endif // __SRC_LIB_TPM2_MARSHALING_H
diff --git a/src/security/tpm/tcg-2.0/tpm2_tlcl.c b/src/security/tpm/tcg-2.0/tpm2_tlcl.c
new file mode 100644
index 0000000000..e111b89ae2
--- /dev/null
+++ b/src/security/tpm/tcg-2.0/tpm2_tlcl.c
@@ -0,0 +1,438 @@
+/*
+ * Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <arch/early_variables.h>
+#include <console/console.h>
+#include <endian.h>
+#include <string.h>
+#include <vb2_api.h>
+
+#include "tpm2_tlcl_structures.h"
+#include "tpm2_marshaling.h"
+#include "../tpm.h"
+#include "../antirollback.h"
+
+/*
+ * This file provides interface between firmware and TPM2 device. The TPM1.2
+ * API was copied as is and relevant functions modified to comply with the
+ * TPM2 specification.
+ */
+
+static void *tpm_process_command(TPM_CC command, void *command_body)
+{
+ struct obuf ob;
+ struct ibuf ib;
+ size_t out_size;
+ size_t in_size;
+ const uint8_t *sendb;
+ /* Command/response buffer. */
+ static uint8_t cr_buffer[TPM_BUFFER_SIZE] CAR_GLOBAL;
+
+ uint8_t *cr_buffer_ptr = car_get_var_ptr(cr_buffer);
+
+ obuf_init(&ob, cr_buffer_ptr, sizeof(cr_buffer));
+
+ if (tpm_marshal_command(command, command_body, &ob) < 0) {
+ printk(BIOS_ERR, "command %#x\n", command);
+ return NULL;
+ }
+
+ sendb = obuf_contents(&ob, &out_size);
+
+ in_size = sizeof(cr_buffer);
+ if (tis_sendrecv(sendb, out_size, cr_buffer_ptr, &in_size)) {
+ printk(BIOS_ERR, "tpm transaction failed\n");
+ return NULL;
+ }
+
+ ibuf_init(&ib, cr_buffer_ptr, in_size);
+
+ return tpm_unmarshal_response(command, &ib);
+}
+
+
+uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags)
+{
+ printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__);
+ return TPM_SUCCESS;
+}
+
+static uint32_t tlcl_send_startup(TPM_SU type)
+{
+ struct tpm2_startup startup;
+ struct tpm2_response *response;
+
+ startup.startup_type = type;
+ response = tpm_process_command(TPM2_Startup, &startup);
+
+ if (response && response->hdr.tpm_code &&
+ (response->hdr.tpm_code != TPM_RC_INITIALIZE)) {
+ printk(BIOS_INFO, "%s: Startup return code is %x\n",
+ __func__, response->hdr.tpm_code);
+ return TPM_E_IOERROR;
+ }
+ return TPM_SUCCESS;
+
+}
+
+uint32_t tlcl_resume(void)
+{
+ return tlcl_send_startup(TPM_SU_STATE);
+}
+
+uint32_t tlcl_assert_physical_presence(void)
+{
+ /*
+ * Nothing to do on TPM2 for this, use platform hierarchy availability
+ * instead.
+ */
+ return TPM_SUCCESS;
+}
+
+/*
+ * The caller will provide the digest in a 32 byte buffer, let's consider it a
+ * sha256 digest.
+ */
+uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest,
+ uint8_t *out_digest)
+{
+ struct tpm2_pcr_extend_cmd pcr_ext_cmd;
+ struct tpm2_response *response;
+
+ pcr_ext_cmd.pcrHandle = HR_PCR + pcr_num;
+ pcr_ext_cmd.digests.count = 1;
+ pcr_ext_cmd.digests.digests[0].hashAlg = TPM_ALG_SHA256;
+ memcpy(pcr_ext_cmd.digests.digests[0].digest.sha256, in_digest,
+ sizeof(pcr_ext_cmd.digests.digests[0].digest.sha256));
+
+ response = tpm_process_command(TPM2_PCR_Extend, &pcr_ext_cmd);
+
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_IOERROR;
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_finalize_physical_presence(void)
+{
+ /* Nothing needs to be done with tpm2. */
+ printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__);
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_force_clear(void)
+{
+ struct tpm2_response *response;
+
+ response = tpm_process_command(TPM2_Clear, NULL);
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_IOERROR;
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated,
+ uint8_t *nvlocked)
+{
+ /*
+ * TPM2 does not map directly into these flags TPM1.2 based firmware
+ * expects to be able to retrieve.
+ *
+ * In any case, if any of these conditions are present, the following
+ * firmware flow would be interrupted and will have a chance to report
+ * an error. Let's just hardcode an "All OK" response for now.
+ */
+
+ if (disable)
+ *disable = 0;
+
+ if (nvlocked)
+ *nvlocked = 1;
+
+ if (deactivated)
+ *deactivated = 0;
+
+ return TPM_SUCCESS;
+}
+
+static uint8_t tlcl_init_done CAR_GLOBAL;
+
+/* This function is called directly by vboot, uses vboot return types. */
+uint32_t tlcl_lib_init(void)
+{
+ uint8_t done = car_get_var(tlcl_init_done);
+ if (done)
+ return VB2_SUCCESS;
+
+ if (tis_init())
+ return VB2_ERROR_UNKNOWN;
+ if (tis_open())
+ return VB2_ERROR_UNKNOWN;
+
+ car_set_var(tlcl_init_done, 1);
+
+ return VB2_SUCCESS;
+}
+
+uint32_t tlcl_physical_presence_cmd_enable(void)
+{
+ printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__);
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_read(uint32_t index, void *data, uint32_t length)
+{
+ struct tpm2_nv_read_cmd nv_readc;
+ struct tpm2_response *response;
+
+ memset(&nv_readc, 0, sizeof(nv_readc));
+
+ nv_readc.nvIndex = HR_NV_INDEX + index;
+ nv_readc.size = length;
+
+ response = tpm_process_command(TPM2_NV_Read, &nv_readc);
+
+ /* Need to map tpm error codes into internal values. */
+ if (!response)
+ return TPM_E_READ_FAILURE;
+
+ printk(BIOS_INFO, "%s:%d index %#x return code %x\n",
+ __FILE__, __LINE__, index, response->hdr.tpm_code);
+ switch (response->hdr.tpm_code) {
+ case 0:
+ break;
+
+ /* Uninitialized, returned if the space hasn't been written. */
+ case TPM_RC_NV_UNINITIALIZED:
+ /*
+ * Bad index, cr50 specific value, returned if the space
+ * hasn't been defined.
+ */
+ case TPM_RC_CR50_NV_UNDEFINED:
+ return TPM_E_BADINDEX;
+
+ default:
+ return TPM_E_READ_FAILURE;
+ }
+
+ if (length > response->nvr.buffer.t.size)
+ return TPM_E_RESPONSE_TOO_LARGE;
+
+ if (length < response->nvr.buffer.t.size)
+ return TPM_E_READ_EMPTY;
+
+ memcpy(data, response->nvr.buffer.t.buffer, length);
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_self_test_full(void)
+{
+ struct tpm2_self_test st;
+ struct tpm2_response *response;
+
+ st.yes_no = 1;
+
+ response = tpm_process_command(TPM2_SelfTest, &st);
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_set_deactivated(uint8_t flag)
+{
+ printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__);
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_set_enable(void)
+{
+ printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__);
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_lock_nv_write(uint32_t index)
+{
+ struct tpm2_response *response;
+ /* TPM Wll reject attempts to write at non-defined index. */
+ struct tpm2_nv_write_lock_cmd nv_wl = {
+ .nvIndex = HR_NV_INDEX + index,
+ };
+
+ response = tpm_process_command(TPM2_NV_WriteLock, &nv_wl);
+
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_IOERROR;
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_startup(void)
+{
+ return tlcl_send_startup(TPM_SU_CLEAR);
+}
+
+uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length)
+{
+ struct tpm2_nv_write_cmd nv_writec;
+ struct tpm2_response *response;
+
+ memset(&nv_writec, 0, sizeof(nv_writec));
+
+ nv_writec.nvIndex = HR_NV_INDEX + index;
+ nv_writec.data.t.size = length;
+ nv_writec.data.t.buffer = data;
+
+ response = tpm_process_command(TPM2_NV_Write, &nv_writec);
+
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+
+ /* Need to map tpm error codes into internal values. */
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_WRITE_FAILURE;
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_define_space(uint32_t space_index, size_t space_size)
+{
+ struct tpm2_nv_define_space_cmd nvds_cmd;
+ struct tpm2_response *response;
+ /*
+ * Different sets of NVRAM space attributes apply to the "ro" spaces,
+ * i.e. those which should not be possible to delete or modify once
+ * the RO exits, and the rest of the NVRAM spaces.
+ */
+ const TPMA_NV ro_space_attributes = {
+ .TPMA_NV_PPWRITE = 1,
+ .TPMA_NV_AUTHREAD = 1,
+ .TPMA_NV_PPREAD = 1,
+ .TPMA_NV_PLATFORMCREATE = 1,
+ .TPMA_NV_WRITE_STCLEAR = 1,
+ .TPMA_NV_POLICY_DELETE = 1,
+ };
+ const TPMA_NV default_space_attributes = {
+ .TPMA_NV_PPWRITE = 1,
+ .TPMA_NV_AUTHREAD = 1,
+ .TPMA_NV_PPREAD = 1,
+ .TPMA_NV_PLATFORMCREATE = 1,
+ };
+
+ /* Prepare the define space command structure. */
+ memset(&nvds_cmd, 0, sizeof(nvds_cmd));
+
+ nvds_cmd.publicInfo.dataSize = space_size;
+ nvds_cmd.publicInfo.nvIndex = HR_NV_INDEX + space_index;
+ nvds_cmd.publicInfo.nameAlg = TPM_ALG_SHA256;
+
+ /* RO only NV spaces should be impossible to destroy. */
+ if ((space_index == FIRMWARE_NV_INDEX) ||
+ (space_index == REC_HASH_NV_INDEX)) {
+ /*
+ * This policy digest was obtained using TPM2_PolicyPCR
+ * selecting only PCR_0 with a value of all zeros.
+ */
+ const uint8_t pcr0_unchanged_policy[] = {
+ 0x09, 0x93, 0x3C, 0xCE, 0xEB, 0xB4, 0x41, 0x11,
+ 0x18, 0x81, 0x1D, 0xD4, 0x47, 0x78, 0x80, 0x08,
+ 0x88, 0x86, 0x62, 0x2D, 0xD7, 0x79, 0x94, 0x46,
+ 0x62, 0x26, 0x68, 0x8E, 0xEE, 0xE6, 0x6A, 0xA1
+ };
+
+ nvds_cmd.publicInfo.attributes = ro_space_attributes;
+ /*
+ * Use policy digest based on default pcr0 value. This makes
+ * sure that the space can not be deleted as soon as PCR0
+ * value has been extended from default.
+ */
+ nvds_cmd.publicInfo.authPolicy.t.buffer = pcr0_unchanged_policy;
+ nvds_cmd.publicInfo.authPolicy.t.size =
+ sizeof(pcr0_unchanged_policy);
+ } else {
+ nvds_cmd.publicInfo.attributes = default_space_attributes;
+ }
+
+ response = tpm_process_command(TPM2_NV_DefineSpace, &nvds_cmd);
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+
+ if (!response)
+ return TPM_E_NO_DEVICE;
+
+ /* Map TPM2 retrun codes into common vboot represenation. */
+ switch (response->hdr.tpm_code) {
+ case TPM2_RC_SUCCESS:
+ return TPM_SUCCESS;
+ case TPM2_RC_NV_DEFINED:
+ return TPM_E_NV_DEFINED;
+ default:
+ return TPM_E_INTERNAL_INCONSISTENCY;
+ }
+}
+
+uint32_t tlcl_disable_platform_hierarchy(void)
+{
+ struct tpm2_response *response;
+ struct tpm2_hierarchy_control_cmd hc = {
+ .enable = TPM_RH_PLATFORM,
+ .state = 0,
+ };
+
+ response = tpm_process_command(TPM2_Hierarchy_Control, &hc);
+
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_INTERNAL_INCONSISTENCY;
+
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_cr50_enable_nvcommits(void)
+{
+ uint16_t sub_command = TPM2_CR50_SUB_CMD_NVMEM_ENABLE_COMMITS;
+ struct tpm2_response *response;
+
+ printk(BIOS_INFO, "Enabling cr50 nvmem commmits\n");
+
+ response = tpm_process_command(TPM2_CR50_VENDOR_COMMAND, &sub_command);
+
+ if (response == NULL || (response && response->hdr.tpm_code)) {
+ if (response)
+ printk(BIOS_INFO, "%s: failed %x\n", __func__,
+ response->hdr.tpm_code);
+ else
+ printk(BIOS_INFO, "%s: failed\n", __func__);
+ return TPM_E_IOERROR;
+ }
+ return TPM_SUCCESS;
+}
+
+uint32_t tlcl_cr50_enable_update(uint16_t timeout_ms,
+ uint8_t *num_restored_headers)
+{
+ struct tpm2_response *response;
+ uint16_t command_body[] = {
+ TPM2_CR50_SUB_CMD_TURN_UPDATE_ON, timeout_ms
+ };
+
+ printk(BIOS_INFO, "Checking cr50 for pending updates\n");
+
+ response = tpm_process_command(TPM2_CR50_VENDOR_COMMAND, command_body);
+
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_INTERNAL_INCONSISTENCY;
+
+ *num_restored_headers = response->vcr.num_restored_headers;
+ return TPM_SUCCESS;
+}
diff --git a/src/security/tpm/tcg-2.0/tpm2_tlcl_structures.h b/src/security/tpm/tcg-2.0/tpm2_tlcl_structures.h
new file mode 100644
index 0000000000..acd9e74aec
--- /dev/null
+++ b/src/security/tpm/tcg-2.0/tpm2_tlcl_structures.h
@@ -0,0 +1,373 @@
+/*
+ * Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef __SRC_LIB_TPM2_TLCL_STRUCTURES_H
+#define __SRC_LIB_TPM2_TLCL_STRUCTURES_H
+
+/*
+ * This file includes a subset of definitions of TPM protocol version 2.x
+ * constants and structures needed for functions used in coreboot.
+ */
+#include <stdint.h>
+#include <compiler.h>
+#include <types.h>
+
+#include "../tlcl.h"
+
+/* This should be plenty for what firmware needs. */
+#define TPM_BUFFER_SIZE 256
+
+/* Basic TPM2 types. */
+typedef uint16_t TPM_SU;
+typedef uint16_t TPM_ALG_ID;
+typedef uint32_t TPM_CC;
+typedef uint32_t TPM_HANDLE;
+typedef uint32_t TPM_RC;
+typedef uint8_t TPMI_YES_NO;
+typedef TPM_ALG_ID TPMI_ALG_HASH;
+typedef TPM_HANDLE TPMI_DH_PCR;
+typedef TPM_HANDLE TPMI_RH_NV_INDEX;
+typedef TPM_HANDLE TPMI_RH_ENABLES;
+typedef TPM_HANDLE TPMI_SH_AUTH_SESSION;
+typedef TPM_HANDLE TPM_RH;
+
+/* Some hardcoded algorithm values. */
+#define TPM_ALG_HMAC ((TPM_ALG_ID)0x0005)
+#define TPM_ALG_NULL ((TPM_ALG_ID)0x0010)
+#define TPM_ALG_SHA1 ((TPM_ALG_ID)0x0004)
+#define TPM_ALG_SHA256 ((TPM_ALG_ID)0x000b)
+
+#define SHA256_DIGEST_SIZE 32
+
+/* Some hardcoded hierarchies. */
+#define TPM_RH_NULL 0x40000007
+#define TPM_RS_PW 0x40000009
+#define TPM_RH_PLATFORM 0x4000000C
+
+typedef struct {
+ uint16_t size;
+ uint8_t *buffer;
+} TPM2B;
+
+/* Relevant TPM Command's structures. */
+/* Common command/response header. */
+struct tpm_header {
+ uint16_t tpm_tag;
+ uint32_t tpm_size;
+ TPM_CC tpm_code;
+} __packed;
+
+/* TPM command codes. */
+#define TPM2_Hierarchy_Control ((TPM_CC)0x00000121)
+#define TPM2_Clear ((TPM_CC)0x00000126)
+#define TPM2_NV_DefineSpace ((TPM_CC)0x0000012A)
+#define TPM2_NV_Write ((TPM_CC)0x00000137)
+#define TPM2_NV_WriteLock ((TPM_CC)0x00000138)
+#define TPM2_SelfTest ((TPM_CC)0x00000143)
+#define TPM2_Startup ((TPM_CC)0x00000144)
+#define TPM2_NV_Read ((TPM_CC)0x0000014E)
+#define TPM2_GetCapability ((TPM_CC)0x0000017A)
+#define TPM2_PCR_Extend ((TPM_CC)0x00000182)
+/* TPM2 specifies vendor commands need to have this bit set. Vendor command
+ space is defined by the lower 16 bits. */
+#define TPM_CC_VENDOR_BIT_MASK 0x20000000
+/* FIXME: below is not enough to differentiate between vendors commands
+ of numerous devices. However, the current tpm2 APIs aren't very amenable
+ to extending generically because the marshaling code is assuming all
+ knowledge of all commands. */
+#define TPM2_CR50_VENDOR_COMMAND ((TPM_CC)(TPM_CC_VENDOR_BIT_MASK | 0))
+#define TPM2_CR50_SUB_CMD_NVMEM_ENABLE_COMMITS (21)
+#define TPM2_CR50_SUB_CMD_TURN_UPDATE_ON (24)
+
+/* Startup values. */
+#define TPM_SU_CLEAR 0
+#define TPM_SU_STATE 1
+
+#define TPM_HT_PCR 0x00
+#define TPM_HT_NV_INDEX 0x01
+#define TPM_HT_HMAC_SESSION 0x02
+#define TPM_HT_POLICY_SESSION 0x03
+
+#define HR_SHIFT 24
+#define HR_PCR (TPM_HT_PCR << HR_SHIFT)
+#define HR_HMAC_SESSION (TPM_HT_HMAC_SESSION << HR_SHIFT)
+#define HR_POLICY_SESSION (TPM_HT_POLICY_SESSION << HR_SHIFT)
+#define HR_TRANSIENT (TPM_HT_TRANSIENT << HR_SHIFT)
+#define HR_PERSISTENT (TPM_HT_PERSISTENT << HR_SHIFT)
+#define HR_NV_INDEX (TPM_HT_NV_INDEX << HR_SHIFT)
+#define HR_PERMANENT (TPM_HT_PERMANENT << HR_SHIFT)
+#define PCR_FIRST (HR_PCR + 0)
+#define PCR_LAST (PCR_FIRST + IMPLEMENTATION_PCR-1)
+#define HMAC_SESSION_FIRST (HR_HMAC_SESSION + 0)
+#define HMAC_SESSION_LAST (HMAC_SESSION_FIRST+MAX_ACTIVE_SESSIONS-1)
+#define LOADED_SESSION_FIRST HMAC_SESSION_FIRST
+#define LOADED_SESSION_LAST HMAC_SESSION_LAST
+#define POLICY_SESSION_FIRST (HR_POLICY_SESSION + 0)
+#define POLICY_SESSION_LAST (POLICY_SESSION_FIRST + MAX_ACTIVE_SESSIONS-1)
+#define TRANSIENT_FIRST (HR_TRANSIENT + 0)
+#define ACTIVE_SESSION_FIRST POLICY_SESSION_FIRST
+#define ACTIVE_SESSION_LAST POLICY_SESSION_LAST
+#define TRANSIENT_LAST (TRANSIENT_FIRST+MAX_LOADED_OBJECTS-1)
+#define PERSISTENT_FIRST (HR_PERSISTENT + 0)
+#define PERSISTENT_LAST (PERSISTENT_FIRST + 0x00FFFFFF)
+#define PLATFORM_PERSISTENT (PERSISTENT_FIRST + 0x00800000)
+#define NV_INDEX_FIRST (HR_NV_INDEX + 0)
+#define NV_INDEX_LAST (NV_INDEX_FIRST + 0x00FFFFFF)
+#define PERMANENT_FIRST TPM_RH_FIRST
+#define PERMANENT_LAST TPM_RH_LAST
+
+/* Tpm2 command tags. */
+#define TPM_ST_NO_SESSIONS 0x8001
+#define TPM_ST_SESSIONS 0x8002
+
+/* Values copied from tpm2/tpm_types.h */
+#define RC_VER1 0x100
+#define TPM_RC_INITIALIZE ((TPM_RC)(RC_VER1 + 0x000))
+#define TPM_RC_NV_UNINITIALIZED ((TPM_RC)(RC_VER1 + 0x04A))
+
+/*
+ * Cr50 returns this code when an attempt is made to read an NV location which
+ * has not yet been defined. This is an aggregation of various return code
+ * extensions which may or may not match if a different TPM2 device is
+ * used.
+ */
+#define TPM_RC_CR50_NV_UNDEFINED 0x28b
+
+/* TPM command structures. */
+
+struct tpm2_startup {
+ TPM_SU startup_type;
+};
+
+/* Various TPM capability types to use when querying the device. */
+typedef uint32_t TPM_CAP;
+#define TPM_CAP_TPM_PROPERTIES ((TPM_CAP)0x00000006)
+
+typedef TPM_HANDLE TPMI_RH_NV_AUTH;
+typedef TPM_HANDLE TPMI_RH_NV_INDEX;
+
+/* TPM Property capability constants. */
+typedef uint32_t TPM_PT;
+#define PT_GROUP 0x00000100
+#define PT_VAR (PT_GROUP * 2)
+#define TPM_PT_PERMANENT ((TPM_PT)(PT_VAR + 0))
+
+/* Structures of payloads of various TPM2 commands. */
+struct tpm2_get_capability {
+ TPM_CAP capability;
+ uint32_t property;
+ uint32_t propertyCount;
+};
+
+/* get_capability response when PT_PERMANENT is requested. */
+typedef struct {
+ uint32_t ownerAuthSet : 1;
+ uint32_t endorsementAuthSet : 1;
+ uint32_t lockoutAuthSet : 1;
+ uint32_t reserved3_7 : 5;
+ uint32_t disableClear : 1;
+ uint32_t inLockout : 1;
+ uint32_t tpmGeneratedEPS : 1;
+ uint32_t reserved11_31 : 21;
+} TPMA_PERMANENT;
+
+typedef struct {
+ uint32_t TPMA_NV_PPWRITE : 1;
+ uint32_t TPMA_NV_OWNERWRITE : 1;
+ uint32_t TPMA_NV_AUTHWRITE : 1;
+ uint32_t TPMA_NV_POLICYWRITE : 1;
+ uint32_t TPMA_NV_COUNTER : 1;
+ uint32_t TPMA_NV_BITS : 1;
+ uint32_t TPMA_NV_EXTEND : 1;
+ uint32_t reserved7_9 : 3;
+ uint32_t TPMA_NV_POLICY_DELETE : 1;
+ uint32_t TPMA_NV_WRITELOCKED : 1;
+ uint32_t TPMA_NV_WRITEALL : 1;
+ uint32_t TPMA_NV_WRITEDEFINE : 1;
+ uint32_t TPMA_NV_WRITE_STCLEAR : 1;
+ uint32_t TPMA_NV_GLOBALLOCK : 1;
+ uint32_t TPMA_NV_PPREAD : 1;
+ uint32_t TPMA_NV_OWNERREAD : 1;
+ uint32_t TPMA_NV_AUTHREAD : 1;
+ uint32_t TPMA_NV_POLICYREAD : 1;
+ uint32_t reserved20_24 : 5;
+ uint32_t TPMA_NV_NO_DA : 1;
+ uint32_t TPMA_NV_ORDERLY : 1;
+ uint32_t TPMA_NV_CLEAR_STCLEAR : 1;
+ uint32_t TPMA_NV_READLOCKED : 1;
+ uint32_t TPMA_NV_WRITTEN : 1;
+ uint32_t TPMA_NV_PLATFORMCREATE : 1;
+ uint32_t TPMA_NV_READ_STCLEAR : 1;
+} TPMA_NV;
+
+typedef union {
+ struct {
+ uint16_t size;
+ const uint8_t *buffer;
+ } t;
+ TPM2B b;
+} TPM2B_DIGEST;
+
+typedef TPM2B_DIGEST TPM2B_AUTH;
+typedef TPM2B_DIGEST TPM2B_NONCE;
+
+typedef struct {
+ TPM_PT property;
+ uint32_t value;
+} TPMS_TAGGED_PROPERTY;
+
+#define MAX_CAP_DATA (TPM_BUFFER_SIZE - sizeof(struct tpm_header) - \
+ sizeof(TPMI_YES_NO) - sizeof(TPM_CAP) - sizeof(uint32_t))
+#define MAX_TPM_PROPERTIES (MAX_CAP_DATA/sizeof(TPMS_TAGGED_PROPERTY))
+
+/* Somewhat arbitrary, leave enough room for command wrappers. */
+#define MAX_NV_BUFFER_SIZE (TPM_BUFFER_SIZE - sizeof(struct tpm_header) - 50)
+
+typedef struct {
+ uint32_t count;
+ TPMS_TAGGED_PROPERTY tpmProperty[MAX_TPM_PROPERTIES];
+} TPML_TAGGED_TPM_PROPERTY;
+
+typedef union {
+ TPML_TAGGED_TPM_PROPERTY tpmProperties;
+} TPMU_CAPABILITIES;
+
+typedef struct {
+ TPM_CAP capability;
+ TPMU_CAPABILITIES data;
+} TPMS_CAPABILITY_DATA;
+
+struct get_cap_response {
+ TPMI_YES_NO more_data;
+ TPMS_CAPABILITY_DATA cd;
+};
+
+typedef struct {
+ TPMI_RH_NV_INDEX nvIndex;
+ TPMI_ALG_HASH nameAlg;
+ TPMA_NV attributes;
+ TPM2B_DIGEST authPolicy;
+ uint16_t dataSize;
+} TPMS_NV_PUBLIC;
+
+typedef union {
+ struct {
+ uint16_t size;
+ TPMS_NV_PUBLIC nvPublic;
+ } t;
+ TPM2B b;
+} TPM2B_NV_PUBLIC;
+
+typedef union {
+ struct {
+ uint16_t size;
+ const uint8_t *buffer;
+ } t;
+ TPM2B b;
+} TPM2B_MAX_NV_BUFFER;
+
+/*
+ * This is a union, but as of now we support just one digest - sha256, so
+ * there is just one element.
+ */
+typedef union {
+ uint8_t sha256[SHA256_DIGEST_SIZE];
+} TPMU_HA;
+
+typedef struct {
+ TPMI_ALG_HASH hashAlg;
+ TPMU_HA digest;
+} TPMT_HA;
+
+typedef struct {
+ uint32_t count;
+ TPMT_HA digests[1]; /* Limit max number of hashes to 1. */
+} TPML_DIGEST_VALUES;
+
+struct nv_read_response {
+ uint32_t params_size;
+ TPM2B_MAX_NV_BUFFER buffer;
+};
+
+struct vendor_command_response {
+ uint16_t vc_subcommand;
+ union {
+ uint8_t num_restored_headers;
+ };
+};
+
+struct tpm2_session_attrs {
+ uint8_t continueSession : 1;
+ uint8_t auditExclusive : 1;
+ uint8_t auditReset : 1;
+ uint8_t reserved3_4 : 2;
+ uint8_t decrypt : 1;
+ uint8_t encrypt : 1;
+ uint8_t audit : 1;
+};
+
+/*
+ * TPM session header for commands requiring session information. Also
+ * included in the responses to those commands.
+ */
+struct tpm2_session_header {
+ uint32_t session_handle;
+ uint16_t nonce_size;
+ uint8_t *nonce;
+ union {
+ struct tpm2_session_attrs session_attr_bits;
+ uint8_t session_attrs;
+ } __packed;
+ uint16_t auth_size;
+ uint8_t *auth;
+};
+
+struct tpm2_response {
+ struct tpm_header hdr;
+ union {
+ struct get_cap_response gc;
+ struct nv_read_response nvr;
+ struct tpm2_session_header def_space;
+ struct vendor_command_response vcr;
+ };
+};
+
+struct tpm2_nv_define_space_cmd {
+ TPM2B_AUTH auth;
+ TPMS_NV_PUBLIC publicInfo;
+};
+
+struct tpm2_nv_write_cmd {
+ TPMI_RH_NV_INDEX nvIndex;
+ TPM2B_MAX_NV_BUFFER data;
+ uint16_t offset;
+};
+
+struct tpm2_self_test {
+ TPMI_YES_NO yes_no;
+};
+
+struct tpm2_nv_read_cmd {
+ TPMI_RH_NV_INDEX nvIndex;
+ uint16_t size;
+ uint16_t offset;
+};
+
+struct tpm2_nv_write_lock_cmd {
+ TPMI_RH_NV_INDEX nvIndex;
+};
+
+struct tpm2_pcr_extend_cmd {
+ TPMI_DH_PCR pcrHandle;
+ TPML_DIGEST_VALUES digests;
+};
+
+struct tpm2_hierarchy_control_cmd {
+ TPMI_RH_ENABLES enable;
+ TPMI_YES_NO state;
+};
+
+#endif // __SRC_LIB_TPM2_TLCL_STRUCTURES_H
diff --git a/src/security/tpm/tlcl.h b/src/security/tpm/tlcl.h
new file mode 100644
index 0000000000..8dd5d80685
--- /dev/null
+++ b/src/security/tpm/tlcl.h
@@ -0,0 +1,177 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/*
+ * TPM Lightweight Command Library.
+ *
+ * A low-level library for interfacing to TPM hardware or an emulator.
+ */
+
+#ifndef TPM_LITE_TLCL_H_
+#define TPM_LITE_TLCL_H_
+#include <stdint.h>
+#include <types.h>
+
+#include "tss_constants.h"
+
+/*****************************************************************************/
+/* Functions implemented in tlcl.c */
+
+/**
+ * Call this first. Returns 0 if success, nonzero if error.
+ */
+uint32_t tlcl_lib_init(void);
+
+/**
+ * Perform a raw TPM request/response transaction.
+ */
+uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response,
+ int max_length);
+
+/* Commands */
+
+/**
+ * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for
+ * success).
+ */
+uint32_t tlcl_startup(void);
+
+/**
+ * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned
+ * (0 for success).
+ */
+uint32_t tlcl_resume(void);
+
+/**
+ * Run the self test.
+ *
+ * Note---this is synchronous. To run this in parallel with other firmware,
+ * use ContinueSelfTest(). The TPM error code is returned.
+ */
+uint32_t tlcl_self_test_full(void);
+
+/**
+ * Run the self test in the background.
+ */
+uint32_t tlcl_continue_self_test(void);
+
+#if IS_ENABLED(CONFIG_TPM)
+/**
+ * Define a space with permission [perm]. [index] is the index for the space,
+ * [size] the usable data size. The TPM error code is returned.
+ */
+uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size);
+
+#elif IS_ENABLED(CONFIG_TPM2)
+
+/*
+ * Define a TPM space. The define space command TPM command used by the tlcl
+ * layer is enforcing the policy which would not allow to delete the created
+ * space after any PCR0 change from its initial value.
+ */
+uint32_t tlcl_define_space(uint32_t space_index, size_t space_size);
+#endif
+
+/**
+ * Write [length] bytes of [data] to space at [index]. The TPM error code is
+ * returned.
+ */
+uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length);
+
+/**
+ * Read [length] bytes from space at [index] into [data]. The TPM error code
+ * is returned.
+ */
+uint32_t tlcl_read(uint32_t index, void *data, uint32_t length);
+
+/**
+ * Assert physical presence in software. The TPM error code is returned.
+ */
+uint32_t tlcl_assert_physical_presence(void);
+
+/**
+ * Enable the physical presence command. The TPM error code is returned.
+ */
+uint32_t tlcl_physical_presence_cmd_enable(void);
+
+/**
+ * Finalize the physical presence settings: sofware PP is enabled, hardware PP
+ * is disabled, and the lifetime lock is set. The TPM error code is returned.
+ */
+uint32_t tlcl_finalize_physical_presence(void);
+
+/**
+ * Set the nvLocked bit. The TPM error code is returned.
+ */
+uint32_t tlcl_set_nv_locked(void);
+
+/**
+ * Issue a ForceClear. The TPM error code is returned.
+ */
+uint32_t tlcl_force_clear(void);
+
+/**
+ * Issue a PhysicalEnable. The TPM error code is returned.
+ */
+uint32_t tlcl_set_enable(void);
+
+/**
+ * Issue a SetDeactivated. Pass 0 to activate. Returns result code.
+ */
+uint32_t tlcl_set_deactivated(uint8_t flag);
+
+/**
+ * Get flags of interest. Pointers for flags you aren't interested in may
+ * be NULL. The TPM error code is returned.
+ */
+uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated,
+ uint8_t *nvlocked);
+
+/**
+ * Set the bGlobalLock flag, which only a reboot can clear. The TPM error
+ * code is returned.
+ */
+uint32_t tlcl_set_global_lock(void);
+
+/**
+ * Make an NV Ram location read_only. The TPM error code is returned.
+ */
+uint32_t tlcl_lock_nv_write(uint32_t index);
+
+/**
+ * Perform a TPM_Extend.
+ */
+uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest,
+ uint8_t *out_digest);
+
+/**
+ * Get the entire set of permanent flags.
+ */
+uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags);
+
+/**
+ * Disable platform hierarchy. Specific to TPM2. The TPM error code is returned.
+ */
+uint32_t tlcl_disable_platform_hierarchy(void);
+
+/**
+ * CR50 specific tpm command to enable nvmem commits before internal timeout
+ * expires.
+ */
+uint32_t tlcl_cr50_enable_nvcommits(void);
+
+/**
+ * CR50 specific tpm command to restore header(s) of the dormant RO/RW
+ * image(s) and in case there indeed was a dormant image, trigger reboot after
+ * the timeout milliseconds. Note that timeout of zero means "NO REBOOT", not
+ * "IMMEDIATE REBOOT".
+ *
+ * Return value indicates success or failure of accessing the TPM; in case of
+ * success the number of restored headers is saved in num_restored_headers.
+ */
+uint32_t tlcl_cr50_enable_update(uint16_t timeout_ms,
+ uint8_t *num_restored_headers);
+
+#endif /* TPM_LITE_TLCL_H_ */
diff --git a/src/security/tpm/tpm.h b/src/security/tpm/tpm.h
new file mode 100644
index 0000000000..32a44c17eb
--- /dev/null
+++ b/src/security/tpm/tpm.h
@@ -0,0 +1,102 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2011 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef TPM_H_
+#define TPM_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+enum tis_access {
+ TPM_ACCESS_VALID = (1 << 7),
+ TPM_ACCESS_ACTIVE_LOCALITY = (1 << 5),
+ TPM_ACCESS_REQUEST_PENDING = (1 << 2),
+ TPM_ACCESS_REQUEST_USE = (1 << 1),
+ TPM_ACCESS_ESTABLISHMENT = (1 << 0),
+};
+
+enum tis_status {
+ TPM_STS_FAMILY_SHIFT = 26,
+ TPM_STS_FAMILY_MASK = (0x3 << TPM_STS_FAMILY_SHIFT),
+ TPM_STS_FAMILY_TPM_2_0 = (1 << TPM_STS_FAMILY_SHIFT),
+ TPM_STS_FAMILY_TPM_1_2 = (0 << TPM_STS_FAMILY_SHIFT),
+ TPM_STS_RESET_ESTABLISHMENT = (1 << 25),
+ TPM_STS_COMMAND_CANCEL = (1 << 24),
+ TPM_STS_BURST_COUNT_SHIFT = 8,
+ TPM_STS_BURST_COUNT_MASK = (0xFFFF << TPM_STS_BURST_COUNT_SHIFT),
+ TPM_STS_VALID = (1 << 7),
+ TPM_STS_COMMAND_READY = (1 << 6),
+ TPM_STS_GO = (1 << 5),
+ TPM_STS_DATA_AVAIL = (1 << 4),
+ TPM_STS_DATA_EXPECT = (1 << 3),
+ TPM_STS_SELF_TEST_DONE = (1 << 2),
+ TPM_STS_RESPONSE_RETRY = (1 << 1),
+};
+
+/*
+ * tis_init()
+ *
+ * Initialize the TPM device. Returns 0 on success or -1 on
+ * failure (in case device probing did not succeed).
+ */
+int tis_init(void);
+
+/*
+ * tis_open()
+ *
+ * Requests access to locality 0 for the caller. After all commands have been
+ * completed the caller is supposed to call tis_close().
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+int tis_open(void);
+
+/*
+ * tis_close()
+ *
+ * terminate the currect session with the TPM by releasing the locked
+ * locality. Returns 0 on success of -1 on failure (in case lock
+ * removal did not succeed).
+ */
+int tis_close(void);
+
+/*
+ * tis_sendrecv()
+ *
+ * Send the requested data to the TPM and then try to get its response
+ *
+ * @sendbuf - buffer of the data to send
+ * @send_size size of the data to send
+ * @recvbuf - memory to save the response to
+ * @recv_len - pointer to the size of the response buffer
+ *
+ * Returns 0 on success (and places the number of response bytes at recv_len)
+ * or -1 on failure.
+ */
+int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf,
+ size_t *recv_len);
+
+void init_tpm(int s3resume);
+
+/*
+ * tis_plat_irq_status()
+ *
+ * Check tpm irq and clear it.
+ *
+ * Returns 1 when irq pending or 0 when not.
+ */
+int tis_plat_irq_status(void);
+
+#endif /* TPM_H_ */
diff --git a/src/security/tpm/tpm_error_messages.h b/src/security/tpm/tpm_error_messages.h
new file mode 100644
index 0000000000..ac7cd4e859
--- /dev/null
+++ b/src/security/tpm/tpm_error_messages.h
@@ -0,0 +1,255 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* TPM error codes.
+ *
+ * Copy-pasted and lightly edited from TCG TPM Main Part 2 TPM Structures
+ * Version 1.2 Level 2 Revision 103 26 October 2006 Draft.
+ */
+
+#ifndef TPM_ERROR_MESSAGES_H
+#define TPM_ERROR_MESSAGES_H
+
+#define TPM_E_BASE 0x0
+#define TPM_E_NON_FATAL 0x800
+
+typedef struct tpm_error_info {
+ const char *name;
+ uint32_t code;
+ const char *description;
+} tpm_error_info;
+
+tpm_error_info tpm_error_table[] = {
+ {"TPM_AUTHFAIL", TPM_E_BASE + 1,
+ "Authentication failed"},
+ {"TPM_BADINDEX", TPM_E_BASE + 2,
+ "The index to a PCR, DIR or other register is incorrect"},
+ {"TPM_BAD_PARAMETER", TPM_E_BASE + 3,
+ "One or more parameter is bad"},
+ {"TPM_AUDITFAILURE", TPM_E_BASE + 4,
+ "An operation completed successfully\n\
+but the auditing of that operation failed"},
+ {"TPM_CLEAR_DISABLED", TPM_E_BASE + 5,
+ "The clear disable flag is set and all clear operations now require\n\
+physical access"},
+ {"TPM_DEACTIVATED", TPM_E_BASE + 6,
+ "The TPM is deactivated"},
+ {"TPM_DISABLED", TPM_E_BASE + 7,
+ "The TPM is disabled"},
+ {"TPM_DISABLED_CMD", TPM_E_BASE + 8,
+ "The target command has been disabled"},
+ {"TPM_FAIL", TPM_E_BASE + 9,
+ "The operation failed"},
+ {"TPM_BAD_ORDINAL", TPM_E_BASE + 10,
+ "The ordinal was unknown or inconsistent"},
+ {"TPM_INSTALL_DISABLED", TPM_E_BASE + 11,
+ "The ability to install an owner is disabled"},
+ {"TPM_INVALID_KEYHANDLE", TPM_E_BASE + 12,
+ "The key handle can not be interpreted"},
+ {"TPM_KEYNOTFOUND", TPM_E_BASE + 13,
+ "The key handle points to an invalid key"},
+ {"TPM_INAPPROPRIATE_ENC", TPM_E_BASE + 14,
+ "Unacceptable encryption scheme"},
+ {"TPM_MIGRATEFAIL", TPM_E_BASE + 15,
+ "Migration authorization failed"},
+ {"TPM_INVALID_PCR_INFO", TPM_E_BASE + 16,
+ "PCR information could not be interpreted"},
+ {"TPM_NOSPACE", TPM_E_BASE + 17,
+ "No room to load key"},
+ {"TPM_NOSRK", TPM_E_BASE + 18,
+ "There is no SRK set"},
+ {"TPM_NOTSEALED_BLOB", TPM_E_BASE + 19,
+ "An encrypted blob is invalid or was not created by this TPM"},
+ {"TPM_OWNER_SET", TPM_E_BASE + 20,
+ "There is already an Owner"},
+ {"TPM_RESOURCES", TPM_E_BASE + 21,
+ "The TPM has insufficient internal resources to perform the requested \
+action"},
+ {"TPM_SHORTRANDOM", TPM_E_BASE + 22,
+ "A random string was too short"},
+ {"TPM_SIZE", TPM_E_BASE + 23,
+ "The TPM does not have the space to perform the operation"},
+ {"TPM_WRONGPCRVAL", TPM_E_BASE + 24,
+ "The named PCR value does not match the current PCR value"},
+ {"TPM_BAD_PARAM_SIZE", TPM_E_BASE + 25,
+ "The paramSize argument to the command has the incorrect value"},
+ {"TPM_SHA_THREAD", TPM_E_BASE + 26,
+ "There is no existing SHA-1 thread"},
+ {"TPM_SHA_ERROR", TPM_E_BASE + 27,
+ "The calculation is unable to proceed because the existing SHA-1\n\
+thread has already encountered an error"},
+ {"TPM_FAILEDSELFTEST", TPM_E_BASE + 28,
+ "Self-test has failed and the TPM has shutdown"},
+ {"TPM_AUTH2FAIL", TPM_E_BASE + 29,
+ "The authorization for the second key in a 2 key function\n\
+failed authorization"},
+ {"TPM_BADTAG", TPM_E_BASE + 30,
+ "The tag value sent to for a command is invalid"},
+ {"TPM_IOERROR", TPM_E_BASE + 31,
+ "An IO error occurred transmitting information to the TPM"},
+ {"TPM_ENCRYPT_ERROR", TPM_E_BASE + 32,
+ "The encryption process had a problem"},
+ {"TPM_DECRYPT_ERROR", TPM_E_BASE + 33,
+ "The decryption process did not complete"},
+ {"TPM_INVALID_AUTHHANDLE", TPM_E_BASE + 34,
+ "An invalid handle was used"},
+ {"TPM_NO_ENDORSEMENT", TPM_E_BASE + 35,
+ "The TPM does not a EK installed"},
+ {"TPM_INVALID_KEYUSAGE", TPM_E_BASE + 36,
+ "The usage of a key is not allowed"},
+ {"TPM_WRONG_ENTITYTYPE", TPM_E_BASE + 37,
+ "The submitted entity type is not allowed"},
+ {"TPM_INVALID_POSTINIT", TPM_E_BASE + 38,
+ "The command was received in the wrong sequence relative to TPM_Init\n\
+and a subsequent TPM_Startup"},
+ {"TPM_INAPPROPRIATE_SIG", TPM_E_BASE + 39,
+ "Signed data cannot include additional DER information"},
+ {"TPM_BAD_KEY_PROPERTY", TPM_E_BASE + 40,
+ "The key properties in TPM_KEY_PARMs are not supported by this TPM"},
+ {"TPM_BAD_MIGRATION", TPM_E_BASE + 41,
+ "The migration properties of this key are incorrect"},
+ {"TPM_BAD_SCHEME", TPM_E_BASE + 42,
+ "The signature or encryption scheme for this key is incorrect or not\n\
+permitted in this situation"},
+ {"TPM_BAD_DATASIZE", TPM_E_BASE + 43,
+ "The size of the data (or blob) parameter is bad or inconsistent\n\
+with the referenced key"},
+ {"TPM_BAD_MODE", TPM_E_BASE + 44,
+ "A mode parameter is bad, such as capArea or subCapArea for\n\
+TPM_GetCapability, physicalPresence parameter for TPM_PhysicalPresence,\n\
+or migrationType for, TPM_CreateMigrationBlob"},
+ {"TPM_BAD_PRESENCE", TPM_E_BASE + 45,
+ "Either the physicalPresence or physicalPresenceLock bits\n\
+have the wrong value"},
+ {"TPM_BAD_VERSION", TPM_E_BASE + 46,
+ "The TPM cannot perform this version of the capability"},
+ {"TPM_NO_WRAP_TRANSPORT", TPM_E_BASE + 47,
+ "The TPM does not allow for wrapped transport sessions"},
+ {"TPM_AUDITFAIL_UNSUCCESSFUL", TPM_E_BASE + 48,
+ "TPM audit construction failed and the underlying command\n\
+was returning a failure code also"},
+ {"TPM_AUDITFAIL_SUCCESSFUL", TPM_E_BASE + 49,
+ "TPM audit construction failed and the underlying command\n\
+was returning success"},
+ {"TPM_NOTRESETABLE", TPM_E_BASE + 50,
+ "Attempt to reset a PCR register that does not have the resettable \
+attribute"},
+ {"TPM_NOTLOCAL", TPM_E_BASE + 51,
+ "Attempt to reset a PCR register that requires locality\n\
+and locality modifier not part of command transport"},
+ {"TPM_BAD_TYPE", TPM_E_BASE + 52,
+ "Make identity blob not properly typed"},
+ {"TPM_INVALID_RESOURCE", TPM_E_BASE + 53,
+ "When saving context identified resource type does not match actual \
+resource"},
+ {"TPM_NOTFIPS", TPM_E_BASE + 54,
+ "The TPM is attempting to execute a command only available when in \
+FIPS mode"},
+ {"TPM_INVALID_FAMILY", TPM_E_BASE + 55,
+ "The command is attempting to use an invalid family ID"},
+ {"TPM_NO_NV_PERMISSION", TPM_E_BASE + 56,
+ "The permission to manipulate the NV storage is not available"},
+ {"TPM_REQUIRES_SIGN", TPM_E_BASE + 57,
+ "The operation requires a signed command"},
+ {"TPM_KEY_NOTSUPPORTED", TPM_E_BASE + 58,
+ "Wrong operation to load an NV key"},
+ {"TPM_AUTH_CONFLICT", TPM_E_BASE + 59,
+ "NV_LoadKey blob requires both owner and blob authorization"},
+ {"TPM_AREA_LOCKED", TPM_E_BASE + 60,
+ "The NV area is locked and not writable"},
+ {"TPM_BAD_LOCALITY", TPM_E_BASE + 61,
+ "The locality is incorrect for the attempted operation"},
+ {"TPM_READ_ONLY", TPM_E_BASE + 62,
+ "The NV area is read only and can't be written to"},
+ {"TPM_PER_NOWRITE", TPM_E_BASE + 63,
+ "There is no protection on the write to the NV area"},
+ {"TPM_FAMILYCOUNT", TPM_E_BASE + 64,
+ "The family count value does not match"},
+ {"TPM_WRITE_LOCKED", TPM_E_BASE + 65,
+ "The NV area has already been written to"},
+ {"TPM_BAD_ATTRIBUTES", TPM_E_BASE + 66,
+ "The NV area attributes conflict"},
+ {"TPM_INVALID_STRUCTURE", TPM_E_BASE + 67,
+ "The structure tag and version are invalid or inconsistent"},
+ {"TPM_KEY_OWNER_CONTROL", TPM_E_BASE + 68,
+ "The key is under control of the TPM Owner and can only be evicted\n\
+by the TPM Owner"},
+ {"TPM_BAD_COUNTER", TPM_E_BASE + 69,
+ "The counter handle is incorrect"},
+ {"TPM_NOT_FULLWRITE", TPM_E_BASE + 70,
+ "The write is not a complete write of the area"},
+ {"TPM_CONTEXT_GAP", TPM_E_BASE + 71,
+ "The gap between saved context counts is too large"},
+ {"TPM_MAXNVWRITES", TPM_E_BASE + 72,
+ "The maximum number of NV writes without an owner has been exceeded"},
+ {"TPM_NOOPERATOR", TPM_E_BASE + 73,
+ "No operator AuthData value is set"},
+ {"TPM_RESOURCEMISSING", TPM_E_BASE + 74,
+ "The resource pointed to by context is not loaded"},
+ {"TPM_DELEGATE_LOCK", TPM_E_BASE + 75,
+ "The delegate administration is locked"},
+ {"TPM_DELEGATE_FAMILY", TPM_E_BASE + 76,
+ "Attempt to manage a family other then the delegated family"},
+ {"TPM_DELEGATE_ADMIN", TPM_E_BASE + 77,
+ "Delegation table management not enabled"},
+ {"TPM_TRANSPORT_NOTEXCLUSIVE", TPM_E_BASE + 78,
+ "There was a command executed outside of an exclusive transport \
+session"},
+ {"TPM_OWNER_CONTROL", TPM_E_BASE + 79,
+ "Attempt to context save a owner evict controlled key"},
+ {"TPM_DAA_RESOURCES", TPM_E_BASE + 80,
+ "The DAA command has no resources available to execute the command"},
+ {"TPM_DAA_INPUT_DATA0", TPM_E_BASE + 81,
+ "The consistency check on DAA parameter inputData0 has failed"},
+ {"TPM_DAA_INPUT_DATA1", TPM_E_BASE + 82,
+ "The consistency check on DAA parameter inputData1 has failed"},
+ {"TPM_DAA_ISSUER_SETTINGS", TPM_E_BASE + 83,
+ "The consistency check on DAA_issuerSettings has failed"},
+ {"TPM_DAA_TPM_SETTINGS", TPM_E_BASE + 84,
+ "The consistency check on DAA_tpmSpecific has failed"},
+ {"TPM_DAA_STAGE", TPM_E_BASE + 85,
+ "The atomic process indicated by the submitted DAA command is not\n\
+the expected process"},
+ {"TPM_DAA_ISSUER_VALIDITY", TPM_E_BASE + 86,
+ "The issuer's validity check has detected an inconsistency"},
+ {"TPM_DAA_WRONG_W", TPM_E_BASE + 87,
+ "The consistency check on w has failed"},
+ {"TPM_BAD_HANDLE", TPM_E_BASE + 88,
+ "The handle is incorrect"},
+ {"TPM_BAD_DELEGATE", TPM_E_BASE + 89,
+ "Delegation is not correct"},
+ {"TPM_BADCONTEXT", TPM_E_BASE + 90,
+ "The context blob is invalid"},
+ {"TPM_TOOMANYCONTEXTS", TPM_E_BASE + 91,
+ "Too many contexts held by the TPM"},
+ {"TPM_MA_TICKET_SIGNATURE", TPM_E_BASE + 92,
+ "Migration authority signature validation failure"},
+ {"TPM_MA_DESTINATION", TPM_E_BASE + 93,
+ "Migration destination not authenticated"},
+ {"TPM_MA_SOURCE", TPM_E_BASE + 94,
+ "Migration source incorrect"},
+ {"TPM_MA_AUTHORITY", TPM_E_BASE + 95,
+ "Incorrect migration authority"},
+ {"TPM_PERMANENTEK", TPM_E_BASE + 97,
+ "Attempt to revoke the EK and the EK is not revocable"},
+ {"TPM_BAD_SIGNATURE", TPM_E_BASE + 98,
+ "Bad signature of CMK ticket"},
+ {"TPM_NOCONTEXTSPACE", TPM_E_BASE + 99,
+ "There is no room in the context list for additional contexts"},
+ {"TPM_RETRY", TPM_E_BASE + TPM_E_NON_FATAL,
+ "The TPM is too busy to respond to the command immediately, but\n\
+the command could be resubmitted at a later time. The TPM MAY\n\
+return TPM_RETRY for any command at any time"},
+ {"TPM_NEEDS_SELFTEST", TPM_E_BASE + TPM_E_NON_FATAL + 1,
+ "TPM_ContinueSelfTest has not been run"},
+ {"TPM_DOING_SELFTEST", TPM_E_BASE + TPM_E_NON_FATAL + 2,
+ "The TPM is currently executing the actions of TPM_ContinueSelfTest\n\
+because the ordinal required resources that have not been tested"},
+ {"TPM_DEFEND_LOCK_RUNNING", TPM_E_BASE + TPM_E_NON_FATAL + 3,
+ "The TPM is defending against dictionary attacks and is in some\n\
+time-out period"},
+};
+
+#endif /* TPM_ERROR_MESSAGES_H */
diff --git a/src/security/tpm/tss_constants.h b/src/security/tpm/tss_constants.h
new file mode 100644
index 0000000000..937e553969
--- /dev/null
+++ b/src/security/tpm/tss_constants.h
@@ -0,0 +1,100 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Some TPM constants and type definitions for standalone compilation for use
+ * in the firmware
+ */
+#ifndef VBOOT_REFERENCE_TSS_CONSTANTS_H_
+#define VBOOT_REFERENCE_TSS_CONSTANTS_H_
+#include <stdint.h>
+
+#define TPM_MAX_COMMAND_SIZE 4096
+#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */
+#define TPM_PUBEK_SIZE 256
+#define TPM_PCR_DIGEST 20
+
+#define TPM_E_NON_FATAL 0x800
+
+#define TPM_SUCCESS ((uint32_t)0x00000000)
+
+#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c)
+#define TPM_E_BADINDEX ((uint32_t)0x00000002)
+#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d)
+#define TPM_E_IOERROR ((uint32_t)0x0000001f)
+#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026)
+#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048)
+#define TPM_E_OWNER_SET ((uint32_t)0x00000014)
+
+#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1))
+#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2))
+
+#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */
+#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */
+#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */
+#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */
+#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */
+#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */
+#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */
+#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */
+#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */
+#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */
+#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */
+#define TPM_E_NV_DEFINED ((uint32_t)0x0000500b) /* vboot local */
+
+#define TPM_NV_INDEX0 ((uint32_t)0x00000000)
+#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff)
+#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15)
+#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0)
+#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31)
+#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14)
+
+#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1)
+#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2)
+#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3)
+
+#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4)
+#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5)
+#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6)
+
+/* Some TPM2 return codes used in this library. */
+#define TPM2_RC_SUCCESS 0
+#define TPM2_RC_NV_DEFINED 0x14c
+
+typedef uint8_t TSS_BOOL;
+typedef uint16_t TPM_STRUCTURE_TAG;
+
+typedef struct tdTPM_PERMANENT_FLAGS {
+ TPM_STRUCTURE_TAG tag;
+ TSS_BOOL disable;
+ TSS_BOOL ownership;
+ TSS_BOOL deactivated;
+ TSS_BOOL readPubek;
+ TSS_BOOL disableOwnerClear;
+ TSS_BOOL allowMaintenance;
+ TSS_BOOL physicalPresenceLifetimeLock;
+ TSS_BOOL physicalPresenceHWEnable;
+ TSS_BOOL physicalPresenceCMDEnable;
+ TSS_BOOL CEKPUsed;
+ TSS_BOOL TPMpost;
+ TSS_BOOL TPMpostLock;
+ TSS_BOOL FIPS;
+ TSS_BOOL Operator;
+ TSS_BOOL enableRevokeEK;
+ TSS_BOOL nvLocked;
+ TSS_BOOL readSRKPub;
+ TSS_BOOL tpmEstablished;
+ TSS_BOOL maintenanceDone;
+ TSS_BOOL disableFullDALogicInfo;
+} TPM_PERMANENT_FLAGS;
+
+typedef struct tdTPM_STCLEAR_FLAGS {
+ TPM_STRUCTURE_TAG tag;
+ TSS_BOOL deactivated;
+ TSS_BOOL disableForceClear;
+ TSS_BOOL physicalPresence;
+ TSS_BOOL physicalPresenceLock;
+ TSS_BOOL bGlobalLock;
+} TPM_STCLEAR_FLAGS;
+
+#endif /* VBOOT_REFERENCE_TSS_CONSTANTS_H_ */