1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* tboot.h: shared data structure with tboot and kernel and functions
* used by kernel for runtime support of Intel(R) Trusted
* Execution Technology
*
* Copyright (c) 2006-2009, Intel Corporation
*/
#ifndef _LINUX_TBOOT_H
#define _LINUX_TBOOT_H
/* these must have the values from 0-5 in this order */
enum {
TB_SHUTDOWN_REBOOT = 0,
TB_SHUTDOWN_S5,
TB_SHUTDOWN_S4,
TB_SHUTDOWN_S3,
TB_SHUTDOWN_HALT,
TB_SHUTDOWN_WFS
};
#ifdef CONFIG_INTEL_TXT
#include <linux/acpi.h>
/* used to communicate between tboot and the launched kernel */
#define TB_KEY_SIZE 64 /* 512 bits */
#define MAX_TB_MAC_REGIONS 32
struct tboot_mac_region {
u64 start; /* must be 64 byte -aligned */
u32 size; /* must be 64 byte -granular */
} __packed;
/* GAS - Generic Address Structure (ACPI 2.0+) */
struct tboot_acpi_generic_address {
u8 space_id;
u8 bit_width;
u8 bit_offset;
u8 access_width;
u64 address;
} __packed;
/*
* combines Sx info from FADT and FACS tables per ACPI 2.0+ spec
* (http://www.acpi.info/)
*/
struct tboot_acpi_sleep_info {
struct tboot_acpi_generic_address pm1a_cnt_blk;
struct tboot_acpi_generic_address pm1b_cnt_blk;
struct tboot_acpi_generic_address pm1a_evt_blk;
struct tboot_acpi_generic_address pm1b_evt_blk;
u16 pm1a_cnt_val;
u16 pm1b_cnt_val;
u64 wakeup_vector;
u32 vector_width;
u64 kernel_s3_resume_vector;
} __packed;
/*
* shared memory page used for communication between tboot and kernel
*/
struct tboot {
/*
* version 3+ fields:
*/
/* TBOOT_UUID */
u8 uuid[16];
/* version number: 5 is current */
u32 version;
/* physical addr of tb_log_t log */
u32 log_addr;
/*
* physical addr of entry point for tboot shutdown and
* type of shutdown (TB_SHUTDOWN_*) being requested
*/
u32 shutdown_entry;
u32 shutdown_type;
/* kernel-specified ACPI info for Sx shutdown */
struct tboot_acpi_sleep_info acpi_sinfo;
/* tboot location in memory (physical) */
u32 tboot_base;
u32 tboot_size;
/* memory regions (phys addrs) for tboot to MAC on S3 */
u8 num_mac_regions;
struct tboot_mac_region mac_regions[MAX_TB_MAC_REGIONS];
/*
* version 4+ fields:
*/
/* symmetric key for use by kernel; will be encrypted on S3 */
u8 s3_key[TB_KEY_SIZE];
/*
* version 5+ fields:
*/
/* used to 4byte-align num_in_wfs */
u8 reserved_align[3];
/* number of processors in wait-for-SIPI */
u32 num_in_wfs;
} __packed;
/*
* UUID for tboot data struct to facilitate matching
* defined as {663C8DFF-E8B3-4b82-AABF-19EA4D057A08} by tboot, which is
* represented as {} in the char array used here
*/
#define TBOOT_UUID {0xff, 0x8d, 0x3c, 0x66, 0xb3, 0xe8, 0x82, 0x4b, 0xbf,\
0xaa, 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8}
bool tboot_enabled(void);
extern void tboot_probe(void);
extern void tboot_shutdown(u32 shutdown_type);
extern struct acpi_table_header *tboot_get_dmar_table(
struct acpi_table_header *dmar_tbl);
extern int tboot_force_iommu(void);
#else
#define tboot_enabled() 0
#define tboot_probe() do { } while (0)
#define tboot_shutdown(shutdown_type) do { } while (0)
#define tboot_sleep(sleep_state, pm1a_control, pm1b_control) \
do { } while (0)
#define tboot_get_dmar_table(dmar_tbl) (dmar_tbl)
#define tboot_force_iommu() 0
#endif /* !CONFIG_INTEL_TXT */
#endif /* _LINUX_TBOOT_H */
|
