Message-Id: <20200504232132.23570-15-daniel.kiper@oracle.com>
Date:   Tue,  5 May 2020 01:21:28 +0200
From:   Daniel Kiper <daniel.kiper@...cle.com>
To:     grub-devel@....org, linux-kernel@...r.kernel.org,
        trenchboot-devel@...glegroups.com, x86@...nel.org
Cc:     alexander.burmashev@...cle.com, andrew.cooper3@...rix.com,
        ard.biesheuvel@...aro.org, dpsmith@...rtussolutions.com,
        eric.snowberg@...cle.com, javierm@...hat.com,
        kanth.ghatraju@...cle.com, konrad.wilk@...cle.com,
        krystian.hebel@...eb.com, lukasz.hawrylko@...ux.intel.com,
        michal.zygowski@...eb.com, mjg59@...gle.com, phcoder@...il.com,
        pirot.krol@...eb.com, pjones@...hat.com, ross.philipson@...cle.com
Subject: [GRUB PATCH RFC 14/18] i386/txt: Add Intel TXT definitions header file

From: Ross Philipson <ross.philipson@...cle.com>

Signed-off-by: Ross Philipson <ross.philipson@...cle.com>
Signed-off-by: Daniel Kiper <daniel.kiper@...cle.com>
---
 include/grub/i386/txt.h | 690 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 690 insertions(+)
 create mode 100644 include/grub/i386/txt.h

diff --git a/include/grub/i386/txt.h b/include/grub/i386/txt.h
new file mode 100644
index 000000000..8280e461e
--- /dev/null
+++ b/include/grub/i386/txt.h
@@ -0,0 +1,690 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2020  Oracle and/or its affiliates.
+ *
+ *  GRUB 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, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Intel TXT definitions header file.
+ */
+
+#ifndef GRUB_TXT_H
+#define GRUB_TXT_H 1
+
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/i386/memory.h>
+#include <grub/i386/mmio.h>
+#include <grub/i386/slaunch.h>
+
+/* Intel TXT Software Developers Guide */
+
+/* Chapter 2, Table 2 MLE/SINIT Capabilities Field Bit Definitions */
+
+#define GRUB_TXT_PCR_EXT_MAX_AGILITY_POLICY	0
+#define GRUB_TXT_PCR_EXT_MAX_PERF_POLICY	1
+
+#define GRUB_TXT_PLATFORM_TYPE_LEGACY		0
+#define GRUB_TXT_PLATFORM_TYPE_CLIENT		1
+#define GRUB_TXT_PLATFORM_TYPE_SERVER		2
+#define GRUB_TXT_PLATFORM_TYPE_RESERVED		3
+
+#define GRUB_TXT_CAPS_GETSEC_WAKE_SUPPORT	(1<<0)
+#define GRUB_TXT_CAPS_MONITOR_SUPPORT		(1<<1)
+#define GRUB_TXT_CAPS_ECX_PT_SUPPORT		(1<<2)
+#define GRUB_TXT_CAPS_STM_SUPPORT		(1<<3)
+#define GRUB_TXT_CAPS_TPM_12_NO_LEGACY_PCR_USAGE	(1<<4)
+#define GRUB_TXT_CAPS_TPM_12_AUTH_PCR_USAGE	(1<<5)
+#define GRUB_TXT_CAPS_PLATFORM_TYPE		(3<<6)
+#define GRUB_TXT_CAPS_MAXPHYSADDR_SUPPORT	(1<<8)
+#define GRUB_TXT_CAPS_TPM_20_EVTLOG_SUPPORT	(1<<9)
+#define GRUB_TXT_CAPS_CBNT_SUPPORT		(1<<10)
+/* Rest is reserved */
+
+/* Appendix A TXT Execution Technology Authenticated Code Modules */
+/* A.1 Authenticated Code Module Format */
+
+#define GRUB_TXT_ACM_MODULE_TYPE		2
+
+#define GRUB_TXT_ACM_MODULE_SUB_TYPE_TXT_ACM	0
+#define GRUB_TXT_ACM_MODULE_SUB_TYPE_S_ACM	1
+
+#define GRUB_TXT_ACM_HEADER_LEN_0_0		161
+#define GRUB_TXT_ACM_HEADER_LEN_3_0		224
+
+#define GRUB_TXT_ACM_HEADER_VERSION_0_0		0x0000
+#define GRUB_TXT_ACM_HEADER_VERSION_3_0		0x0300
+
+#define GRUB_TXT_ACM_FLAG_PREPRODUCTION		(1<<14)
+#define GRUB_TXT_ACM_FLAG_DEBUG_SIGNED		(1<<15)
+
+#define GRUB_TXT_ACM_MODULE_VENDOR_INTEL	0x00008086
+
+#define GRUB_TXT_MLE_MAX_SIZE			0x40000000
+
+#define GRUB_MLE_AP_WAKE_BLOCK_SIZE		GRUB_PAGE_SIZE
+
+struct grub_txt_acm_header
+{
+  grub_uint16_t module_type;
+  grub_uint16_t module_sub_type;
+  grub_uint32_t header_len;
+  grub_uint32_t header_version;
+  grub_uint16_t chipset_id;
+  grub_uint16_t flags;
+  grub_uint32_t module_vendor;
+  grub_uint32_t date; /* e.g 20131231H == December 31, 2013 */
+  grub_uint32_t size; /* multiples of 4 bytes */
+  grub_uint16_t txt_svn;
+  grub_uint16_t se_svn;
+  grub_uint32_t code_control;
+  grub_uint32_t error_entry_point;
+  grub_uint32_t gdt_limit;
+  grub_uint32_t gdt_base;
+  grub_uint32_t seg_sel;
+  grub_uint32_t entry_point;
+  grub_uint8_t reserved2[64];
+  grub_uint32_t key_size;
+  grub_uint32_t scratch_size;
+  /* RSA Pub Key and Signature */
+} GRUB_PACKED;
+
+#define GRUB_TXT_ACM_UUID "\xaa\x3a\xc0\x7f\xa7\x46\xdb\x18\x2e\xac\x69\x8f\x8d\x41\x7f\x5a"
+
+#define GRUB_TXT_ACM_CHIPSET_TYPE_BIOS		0
+#define GRUB_TXT_ACM_CHIPSET_TYPE_SINIT		1
+#define GRUB_TXT_ACM_CHIPSET_TYPE_BIOS_RACM	8
+#define GRUB_TXT_ACM_CHIPSET_TYPE_SINIT_RACM	9
+
+struct grub_txt_acm_info_table
+{
+  grub_uint8_t uuid[16];
+  grub_uint8_t chipset_acm_type;
+  grub_uint8_t version;
+  grub_uint16_t length;
+  grub_uint32_t chipset_id_list;
+  grub_uint32_t os_sinit_data_ver;
+  grub_uint32_t min_mle_header_ver;
+  grub_uint32_t capabilities;
+  grub_uint32_t acm_version_revision;
+  grub_uint32_t processor_id_list;
+  /* Version >= 5 */
+  grub_uint32_t tpm_info_list;
+} GRUB_PACKED;
+
+struct grub_txt_acm_chipset_id_list
+{
+  grub_uint32_t count;
+        /* Array of chipset ID structs */
+} GRUB_PACKED;
+
+#define GRUB_TXT_ACM_REVISION_ID_MASK	(1<<0)
+
+struct grub_txt_acm_chipset_id
+{
+  grub_uint32_t flags;
+  grub_uint16_t vendor_id;
+  grub_uint16_t device_id;
+  grub_uint16_t revision_id;
+  grub_uint16_t reserved;
+  grub_uint32_t extended_id;
+} GRUB_PACKED;
+
+struct grub_txt_acm_processor_id_list
+{
+  grub_uint32_t count;
+        /* Array of processor ID structs */
+} GRUB_PACKED;
+
+struct grub_txt_acm_processor_id
+{
+  grub_uint32_t fms;
+  grub_uint32_t fms_mask;
+  grub_uint64_t platform_id;
+  grub_uint64_t platform_mask;
+} GRUB_PACKED;
+
+#define GRUB_TXT_TPM_CAPS_EXTPOL_NONE		0 /* TPM 1.2 */
+#define GRUB_TXT_TPM_CAPS_EXTPOL_MA		1
+#define GRUB_TXT_TPM_CAPS_EXTPOL_MP		2
+#define GRUB_TXT_TPM_CAPS_EXTPOL_BOTH		3
+
+#define GRUB_TXT_TPM_CAPS_FAMILY_DISCRETE_12	1
+#define GRUB_TXT_TPM_CAPS_FAMILY_DISCRETE_20	2
+#define GRUB_TXT_TPM_CAPS_FAMILY_FIRMWARE_20	8
+
+#define GRUB_TXT_TPM_CAPS_INITIAL_NV_INDICES	0
+#define GRUB_TXT_TPM_CAPS_TCP_NV_INDICES	1
+
+struct grub_txt_acm_tpm_info
+{
+  grub_uint32_t capabilities;
+  grub_uint16_t count;
+  /* List of supported hash algorithm per TPM2 spec */
+} GRUB_PACKED;
+
+/* Appendix B SMX Interaction with Platform */
+/* B.1 Intel Trusted Execution Technology Configuration Registers */
+
+#ifdef __x86_64__
+#define GRUB_TXT_CFG_REGS_PUB	0xfed30000ULL
+#else
+#define GRUB_TXT_CFG_REGS_PUB	0xfed30000
+#endif
+
+#define GRUB_TXT_STS			0x0000
+#define GRUB_TXT_ESTS			0x0008
+#define GRUB_TXT_ERRORCODE		0x0030
+#define GRUB_TXT_CMD_RESET		0x0038
+#define GRUB_TXT_CMD_CLOSE_PRIVATE	0x0048
+#define GRUB_TXT_VER_FSBIF		0x0100
+#define GRUB_TXT_DIDVID			0x0110
+#define GRUB_TXT_VER_QPIIF		0x0200
+#define GRUB_TXT_CMD_UNLOCK_MEM_CONFIG	0x0218
+#define GRUB_TXT_SINIT_BASE		0x0270
+#define GRUB_TXT_SINIT_SIZE		0x0278
+#define GRUB_TXT_MLE_JOIN		0x0290
+#define GRUB_TXT_HEAP_BASE		0x0300
+#define GRUB_TXT_HEAP_SIZE		0x0308
+#define GRUB_TXT_MSEG_BASE		0x0310
+#define GRUB_TXT_MSEG_SIZE		0x0318
+#define GRUB_TXT_DPR			0x0330
+#define GRUB_TXT_CMD_OPEN_LOCALITY1	0x0380
+#define GRUB_TXT_CMD_CLOSE_LOCALITY1	0x0388
+#define GRUB_TXT_CMD_OPEN_LOCALITY2	0x0390
+#define GRUB_TXT_CMD_CLOSE_LOCALITY2	0x0398
+#define GRUB_TXT_PUBLIC_KEY		0x0400
+#define GRUB_TXT_CMD_SECRETS		0x08e0
+#define GRUB_TXT_CMD_NO_SECRETS		0x08e8
+#define GRUB_TXT_E2STS			0x08f0
+
+#define GRUB_TXT_STS_SENTER_DONE	(1 << 0)
+#define GRUB_TXT_STS_SEXIT_DONE		(1 << 1)
+#define GRUB_TXT_STS_MEM_CONFIG_LOCK	(1 << 6)
+#define GRUB_TXT_STS_PRIVATE_OPEN	(1 << 7)
+#define GRUB_TXT_STS_LOCALITY1_OPEN	(1 << 15)
+#define GRUB_TXT_STS_LOCALITY2_OPEN	(1 << 16)
+
+#define GRUB_TXT_ESTS_TXT_RESET		(1 << 0)
+
+#define GRUB_TXT_VER_FSBIF_DEBUG_FUSE	(1 << 31)
+
+#define GRUB_TXT_VER_QPIIF_DEBUG_FUSE	(1 << 31)
+
+#define GRUB_TXT_E2STS_SECRETS		(1 << 1)
+
+union grub_txt_didvid
+{
+  grub_uint64_t value;
+  struct
+  {
+    grub_uint16_t vid;
+    grub_uint16_t did;
+    grub_uint16_t rid;
+    grub_uint16_t id_ext;
+  };
+} GRUB_PACKED;
+
+#define GRUB_TXT_VERSION_DEBUG_FUSED	(1<<31)
+
+/* Appendix C Intel TXT Heap Memory */
+
+/* Ext Data Structs */
+
+struct grub_txt_heap_uuid
+{
+  grub_uint32_t data1;
+  grub_uint16_t data2;
+  grub_uint16_t data3;
+  grub_uint16_t data4;
+  grub_uint8_t data5[6];
+} GRUB_PACKED;
+
+struct grub_txt_heap_ext_data_element
+{
+  grub_uint32_t type;
+  grub_uint32_t size;
+  grub_uint8_t data[];
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_END			0
+
+struct grub_txt_heap_end_element
+{
+  grub_uint32_t type;
+  grub_uint32_t size;
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_BIOS_SPEC_VER	1
+
+struct grub_txt_heap_bios_spec_ver_element
+{
+  grub_uint16_t spec_ver_major;
+  grub_uint16_t spec_ver_minor;
+  grub_uint16_t spec_ver_revision;
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_ACM			2
+
+struct grub_txt_heap_acm_element
+{
+  grub_uint32_t num_acms;
+  /* Array of num_acms grub_uint64_t addresses */
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_STM			3
+
+struct grub_txt_heap_stm_element
+{
+  /* STM specific BIOS properties */
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_CUSTOM		4
+
+struct grub_txt_heap_custom_element
+{
+  struct grub_txt_heap_uuid uuid;
+  /* Vendor Data */
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_TPM_EVENT_LOG_PTR	5
+
+struct grub_txt_heap_tpm_event_log_element
+{
+  grub_uint32_t type;
+  grub_uint32_t size;
+  grub_uint64_t event_log_phys_addr;
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_MADT			6
+
+struct grub_txt_heap_madt_element
+{
+  /* Copy of ACPI MADT table */
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_EVENT_LOG_POINTER2_1	8
+
+struct grub_txt_heap_event_log_pointer2_1_element
+{
+  grub_uint32_t type;
+  grub_uint32_t size;
+  grub_uint64_t phys_addr;
+  grub_uint32_t allocated_event_container_size;
+  grub_uint32_t first_record_offset;
+  grub_uint32_t next_record_offset;
+} GRUB_PACKED;
+
+#define GRUB_TXT_HEAP_EXTDATA_TYPE_MCFG			9
+
+struct grub_txt_heap_mcfg_element
+{
+  /* Copy of ACPI MCFG table */
+} GRUB_PACKED;
+
+/* TXT Heap Tables */
+
+struct grub_txt_bios_data
+{
+  grub_uint32_t version; /* Currently 5 for TPM 1.2 and 6 for TPM 2.0 */
+  grub_uint32_t bios_sinit_size;
+  grub_uint64_t reserved1;
+  grub_uint64_t reserved22;
+  grub_uint32_t num_logical_procs;
+  /* Versions >= 5 with updates in version 6 */
+  grub_uint32_t sinit_flags;
+  grub_uint32_t mle_flags;
+  /* Versions >= 4 */
+  /* Ext Data Elements */
+} GRUB_PACKED;
+
+/* GRUB SLAUNCH specific definitions OS-MLE data */
+#define GRUB_SL_BOOTPARAMS_OFFSET	0x12c
+#define GRUB_SL_MAX_EVENT_LOG_SIZE	(5*4*1024)   /* 4k*5 */
+#define GRUB_SL_MAX_VARIABLE_MTRRS	32
+#define GRUB_SL_OS_MLE_STRUCT_VERSION	1
+
+struct grub_slaunch_mtrr_pair
+{
+  grub_uint64_t mtrr_physbase;
+  grub_uint64_t mtrr_physmask;
+} GRUB_PACKED;
+
+struct grub_slaunch_mtrr_state
+{
+  grub_uint64_t default_mem_type;
+  grub_uint64_t mtrr_vcnt;
+  struct grub_slaunch_mtrr_pair mtrr_pair[GRUB_SL_MAX_VARIABLE_MTRRS];
+} GRUB_PACKED;
+
+struct grub_txt_os_mle_data
+{
+  grub_uint32_t version;
+  grub_uint32_t zero_page_addr;
+  grub_uint8_t msb_key_hash[20];
+  grub_uint64_t saved_misc_enable_msr;
+  struct grub_slaunch_mtrr_state saved_bsp_mtrrs;
+  grub_uint64_t ap_wake_ebp;
+  grub_uint64_t ap_wake_block;
+  grub_uint8_t event_log_buffer[GRUB_SL_MAX_EVENT_LOG_SIZE];
+} GRUB_PACKED;
+
+struct grub_txt_os_sinit_data
+{
+  grub_uint32_t version; /* Currently 6 for TPM 1.2 and 7 for TPM 2.0 */
+  grub_uint32_t flags;
+  grub_uint64_t mle_ptab;
+  grub_uint64_t mle_size;
+  grub_uint64_t mle_hdr_base;
+  grub_uint64_t vtd_pmr_lo_base;
+  grub_uint64_t vtd_pmr_lo_size;
+  grub_uint64_t vtd_pmr_hi_base;
+  grub_uint64_t vtd_pmr_hi_size;
+  grub_uint64_t lcp_po_base;
+  grub_uint64_t lcp_po_size;
+  grub_uint32_t capabilities;
+  /* Version = 5 */
+  grub_uint64_t    efi_rsdt_ptr;
+  /* Versions >= 6 */
+  /* Ext Data Elements */
+  grub_uint8_t ext_data_elts[];
+} GRUB_PACKED;
+
+struct grub_txt_sinit_mle_data
+{
+  grub_uint32_t version;             /* Current values are 6 through 9 */
+  /* Versions <= 8 */
+  grub_uint8_t bios_acm_id[20];
+  grub_uint32_t edx_senter_flags;
+  grub_uint64_t mseg_valid;
+  grub_uint8_t sinit_hash[20];
+  grub_uint8_t mle_hash[20];
+  grub_uint8_t stm_hash[20];
+  grub_uint8_t lcp_policy_hash[20];
+  grub_uint32_t lcp_policy_control;
+  /* Versions >= 7 */
+  grub_uint32_t rlp_wakeup_addr;
+  grub_uint32_t reserved;
+  grub_uint32_t num_of_sinit_mdrs;
+  grub_uint32_t sinit_mdrs_table_offset;
+  grub_uint32_t sinit_vtd_dmar_table_size;
+  grub_uint32_t sinit_vtd_dmar_table_offset;
+  /* Versions >= 8 */
+  grub_uint32_t processor_scrtm_status;
+  /* Versions >= 9 */
+  /* Ext Data Elements */
+} GRUB_PACKED;
+
+struct grub_txt_sinit_memory_descriptor_records
+{
+  grub_uint64_t address;
+  grub_uint64_t length;
+  grub_uint8_t type;
+  grub_uint8_t reserved[7];
+} GRUB_PACKED;
+
+/* Section 2 Measured Launch Environment */
+/* 2.1 MLE Architecture Overview */
+/* Table 1. MLE Header structure */
+
+struct grub_txt_mle_header
+{
+  grub_uint8_t uuid[16];
+  grub_uint32_t header_len;
+  grub_uint32_t version;
+  grub_uint32_t entry_point;
+  grub_uint32_t first_valid_page;
+  grub_uint32_t mle_start;
+  grub_uint32_t mle_end;
+  grub_uint32_t capabilities;
+  grub_uint32_t cmdline_start;
+  grub_uint32_t cmdline_end;
+} GRUB_PACKED;
+
+struct grub_txt_heap_event_log_ptr_elt
+{
+  grub_uint64_t event_log_phys_addr;
+} GRUB_PACKED;
+
+struct grub_txt_heap_event_log_ptr_elt2_1
+{
+  grub_uint64_t phys_addr;
+  grub_uint32_t allcoated_event_container_size;
+  grub_uint32_t first_record_offset;
+  grub_uint32_t next_record_offset;
+} GRUB_PACKED;
+
+/* TXT register and heap access */
+
+static inline grub_uint64_t
+grub_txt_reg_pub_readq (grub_uint32_t reg)
+{
+  return grub_readq ((void *) (GRUB_TXT_CFG_REGS_PUB + reg));
+}
+
+static inline grub_uint8_t *
+grub_txt_get_heap (void)
+{
+  return (grub_uint8_t *)(grub_addr_t) grub_txt_reg_pub_readq (GRUB_TXT_HEAP_BASE);
+}
+
+static inline grub_uint64_t
+grub_txt_bios_data_size (grub_uint8_t *heap)
+{
+  return *(grub_uint64_t *)heap;
+}
+
+static inline struct grub_txt_bios_data*
+grub_txt_bios_data_start (grub_uint8_t *heap)
+{
+  return (struct grub_txt_bios_data*)(heap + sizeof (grub_uint64_t));
+}
+
+static inline grub_uint64_t
+grub_txt_os_mle_data_size (grub_uint8_t *heap)
+{
+  return *(grub_uint64_t *)(heap + grub_txt_bios_data_size (heap));
+}
+
+static inline struct grub_txt_os_mle_data*
+grub_txt_os_mle_data_start (grub_uint8_t *heap)
+{
+  return (struct grub_txt_os_mle_data*)(heap + grub_txt_bios_data_size (heap) +
+                                        sizeof (grub_uint64_t));
+}
+
+static inline grub_uint64_t
+grub_txt_os_sinit_data_size (grub_uint8_t *heap)
+{
+  return *(grub_uint64_t *)(heap + grub_txt_bios_data_size (heap) +
+                            grub_txt_os_mle_data_size (heap));
+}
+
+static inline struct grub_txt_os_sinit_data *
+grub_txt_os_sinit_data_start (grub_uint8_t *heap)
+{
+  return (struct grub_txt_os_sinit_data*)(heap +
+                 grub_txt_bios_data_size (heap) +
+                 grub_txt_os_mle_data_size (heap) + sizeof (grub_uint64_t));
+}
+
+static inline grub_uint64_t
+grub_txt_sinit_mle_data_size (grub_uint8_t *heap)
+{
+  return *(grub_uint64_t *)(heap + grub_txt_bios_data_size (heap) +
+                            grub_txt_os_mle_data_size (heap) +
+                            grub_txt_os_sinit_data_size (heap));
+}
+
+static inline struct grub_txt_sinit_mle_data*
+grub_txt_sinit_mle_data_start (grub_uint8_t *heap)
+{
+  return (struct grub_txt_sinit_mle_data*)(heap +
+                 grub_txt_bios_data_size (heap) +
+                 grub_txt_os_mle_data_size (heap) +
+                 grub_txt_os_sinit_data_size (heap) +
+                 sizeof (grub_uint64_t));
+}
+
+/* Intel 64 and IA-32 Architectures Software Developer’s Manual */
+/* Volume 2 (2A, 2B, 2C & 2D): Instruction Set Reference, A-Z */
+
+/* CHAPTER 6 SAFER MODE EXTENSIONS REFERENCE */
+
+#define GRUB_SMX_LEAF_CAPABILITIES	0
+#define GRUB_SMX_LEAF_UNDEFINED		1
+#define GRUB_SMX_LEAF_ENTERACCS		2
+#define GRUB_SMX_LEAF_EXITAC 		3
+#define GRUB_SMX_LEAF_SENTER		4
+#define GRUB_SMX_LEAF_SEXIT		5
+#define GRUB_SMX_LEAF_PARAMETERS	6
+#define GRUB_SMX_LEAF_SMCTRL		7
+#define GRUB_SMX_LEAF_WAKEUP		8
+
+#define GRUB_SMX_CAPABILITY_CHIPSET_PRESENT	(1<<0)
+#define GRUB_SMX_CAPABILITY_UNDEFINED		(1<<1)
+#define GRUB_SMX_CAPABILITY_ENTERACCS		(1<<2)
+#define GRUB_SMX_CAPABILITY_EXITAC		(1<<3)
+#define GRUB_SMX_CAPABILITY_SENTER		(1<<4)
+#define GRUB_SMX_CAPABILITY_SEXIT		(1<<5)
+#define GRUB_SMX_CAPABILITY_PARAMETERS		(1<<6)
+#define GRUB_SMX_CAPABILITY_SMCTRL		(1<<7)
+#define GRUB_SMX_CAPABILITY_WAKEUP		(1<<8)
+#define GRUB_SMX_CAPABILITY_EXTENDED_LEAFS	(1<<31)
+
+static inline grub_uint32_t
+grub_txt_getsec_capabilities (grub_uint32_t index)
+{
+  grub_uint32_t caps;
+
+  asm volatile (".byte 0x0f,0x37\n"
+                        : "=a" (caps)
+                        : "a" (GRUB_SMX_LEAF_CAPABILITIES), "b" (index));
+  return caps;
+}
+
+static inline void
+grub_txt_getsec_enteraccs (grub_uint32_t acm_phys_addr, grub_uint32_t acm_size)
+{
+  asm volatile (".byte 0x0f,0x37\n" :
+                        : "a" (GRUB_SMX_LEAF_ENTERACCS),
+                          "b" (acm_phys_addr), "c" (acm_size));
+}
+
+static inline void
+grub_txt_getsec_exitac (grub_uint32_t near_jump)
+{
+  asm volatile (".byte 0x0f,0x37\n" :
+                        : "a" (GRUB_SMX_LEAF_EXITAC), "b" (near_jump));
+}
+
+static inline void
+grub_txt_getsec_senter (grub_uint32_t acm_phys_addr, grub_uint32_t acm_size)
+{
+  asm volatile (".byte 0x0f,0x37\n" :
+                        : "a" (GRUB_SMX_LEAF_SENTER),
+                          "b" (acm_phys_addr), "c" (acm_size));
+}
+
+static inline void
+grub_txt_getsec_sexit (void)
+{
+  asm volatile (".byte 0x0f,0x37\n" : : "a" (GRUB_SMX_LEAF_SEXIT));
+}
+
+#define GRUB_SMX_PARAMETER_TYPE_MASK		0x1f
+#define GRUB_SMX_PARAMETER_NULL			0
+#define GRUB_SMX_PARAMETER_ACM_VERSIONS		1
+#define GRUB_SMX_PARAMETER_MAX_ACM_SIZE		2
+#define GRUB_SMX_PARAMETER_ACM_MEMORY_TYPES	3
+#define GRUB_SMX_PARAMETER_SENTER_CONTROLS	4
+#define GRUB_SMX_PARAMETER_TXT_EXTENSIONS	5
+
+
+#define GRUB_SMX_PARAMETER_MAX_VERSIONS	0x20
+
+#define GRUB_SMX_GET_MAX_ACM_SIZE(v)	((v & ~GRUB_SMX_PARAMETER_TYPE_MASK)*0x20)
+
+#define GRUB_SMX_ACM_MEMORY_TYPE_UC	0x00000100
+#define GRUB_SMX_ACM_MEMORY_TYPE_WC	0x00000200
+#define GRUB_SMX_ACM_MEMORY_TYPE_WT	0x00001000
+#define GRUB_SMX_ACM_MEMORY_TYPE_WP	0x00002000
+#define GRUB_SMX_ACM_MEMORY_TYPE_WB	0x00004000
+
+#define GRUB_SMX_GET_ACM_MEMORY_TYPES(v) (v & ~GRUB_SMX_PARAMETER_TYPE_MASK)
+
+#define GRUB_SMX_GET_SENTER_CONTROLS(v)	((v & 0x7f00) >> 8)
+
+#define GRUB_SMX_PROCESSOR_BASE_SCRTM	0x00000020
+#define GRUB_SMX_MACHINE_CHECK_HANLDING	0x00000040
+#define GRUB_SMX_GET_TXT_EXT_FEATURES(v) (v & (GRUB_SMX_PROCESSOR_BASE_SCRTM|GRUB_SMX_MACHINE_CHECK_HANLDING))
+
+#define GRUB_SMX_DEFAULT_VERSION	0x0
+#define GRUB_SMX_DEFAULT_VERSION_MASK	0xffffffff
+#define GRUB_SMX_DEFAULT_MAX_ACM_SIZE	0x8000 /* 32K */
+#define GRUB_SMX_DEFAULT_ACM_MEMORY_TYPE GRUB_SMX_ACM_MEMORY_TYPE_UC
+#define GRUB_SMX_DEFAULT_SENTER_CONTROLS 0x0
+
+#define GRUB_TXT_PMR_ALIGN_SHIFT	21
+#define GRUB_TXT_PMR_ALIGN		(1 << GRUB_TXT_PMR_ALIGN_SHIFT)
+
+struct grub_smx_supported_versions
+{
+  grub_uint32_t mask;
+  grub_uint32_t version;
+} GRUB_PACKED;
+
+struct grub_smx_parameters
+{
+  struct grub_smx_supported_versions versions[GRUB_SMX_PARAMETER_MAX_VERSIONS];
+  grub_uint32_t version_count;
+  grub_uint32_t max_acm_size;
+  grub_uint32_t acm_memory_types;
+  grub_uint32_t senter_controls;
+  grub_uint32_t txt_feature_ext_flags;
+} GRUB_PACKED;
+
+static inline void
+grub_txt_getsec_parameters (grub_uint32_t index, grub_uint32_t *eax_out,
+                            grub_uint32_t *ebx_out, grub_uint32_t *ecx_out)
+{
+  if (!eax_out || !ebx_out || !ecx_out)
+    return;
+
+  asm volatile (".byte 0x0f,0x37\n"
+                        : "=a" (*eax_out), "=b" (*ebx_out), "=c" (*ecx_out)
+                        : "0" (GRUB_SMX_LEAF_PARAMETERS), "1" (index));
+}
+
+extern grub_uint32_t grub_txt_supported_os_sinit_data_ver (struct grub_txt_acm_header* hdr);
+
+extern grub_uint32_t grub_txt_get_sinit_capabilities (struct grub_txt_acm_header* hdr);
+
+extern int grub_txt_is_sinit_acmod (const void *acmod_base, grub_uint32_t acmod_size);
+
+extern int grub_txt_acmod_match_platform (struct grub_txt_acm_header *hdr);
+
+extern struct grub_txt_acm_header* grub_txt_sinit_select (struct grub_txt_acm_header *sinit);
+
+extern grub_err_t grub_txt_verify_platform (void);
+extern grub_err_t grub_txt_prepare_cpu (void);
+
+extern grub_uint32_t grub_txt_get_mle_ptab_size (grub_uint32_t mle_size);
+extern void grub_txt_setup_mle_ptab (struct grub_slaunch_params *slparams);
+
+extern grub_err_t grub_txt_init (void);
+extern void grub_txt_shutdown (void);
+extern void grub_txt_state_show (void);
+extern grub_err_t grub_txt_boot_prepare (struct grub_slaunch_params *slparams);
+
+#endif
-- 
2.11.0

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