]>
Commit | Line | Data |
---|---|---|
a61127c2 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
31625340 JC |
2 | /* |
3 | * tboot.h: shared data structure with tboot and kernel and functions | |
4 | * used by kernel for runtime support of Intel(R) Trusted | |
5 | * Execution Technology | |
6 | * | |
7 | * Copyright (c) 2006-2009, Intel Corporation | |
31625340 JC |
8 | */ |
9 | ||
69575d38 SW |
10 | #ifndef _LINUX_TBOOT_H |
11 | #define _LINUX_TBOOT_H | |
31625340 JC |
12 | |
13 | /* these must have the values from 0-5 in this order */ | |
14 | enum { | |
15 | TB_SHUTDOWN_REBOOT = 0, | |
16 | TB_SHUTDOWN_S5, | |
17 | TB_SHUTDOWN_S4, | |
18 | TB_SHUTDOWN_S3, | |
19 | TB_SHUTDOWN_HALT, | |
20 | TB_SHUTDOWN_WFS | |
21 | }; | |
22 | ||
23 | #ifdef CONFIG_INTEL_TXT | |
8b48463f | 24 | #include <linux/acpi.h> |
31625340 JC |
25 | /* used to communicate between tboot and the launched kernel */ |
26 | ||
27 | #define TB_KEY_SIZE 64 /* 512 bits */ | |
28 | ||
29 | #define MAX_TB_MAC_REGIONS 32 | |
30 | ||
31 | struct tboot_mac_region { | |
32 | u64 start; /* must be 64 byte -aligned */ | |
33 | u32 size; /* must be 64 byte -granular */ | |
34 | } __packed; | |
35 | ||
36 | /* GAS - Generic Address Structure (ACPI 2.0+) */ | |
37 | struct tboot_acpi_generic_address { | |
38 | u8 space_id; | |
39 | u8 bit_width; | |
40 | u8 bit_offset; | |
41 | u8 access_width; | |
42 | u64 address; | |
43 | } __packed; | |
44 | ||
45 | /* | |
46 | * combines Sx info from FADT and FACS tables per ACPI 2.0+ spec | |
0585c1c0 | 47 | * (https://uefi.org/specifications) |
31625340 JC |
48 | */ |
49 | struct tboot_acpi_sleep_info { | |
50 | struct tboot_acpi_generic_address pm1a_cnt_blk; | |
51 | struct tboot_acpi_generic_address pm1b_cnt_blk; | |
52 | struct tboot_acpi_generic_address pm1a_evt_blk; | |
53 | struct tboot_acpi_generic_address pm1b_evt_blk; | |
54 | u16 pm1a_cnt_val; | |
55 | u16 pm1b_cnt_val; | |
56 | u64 wakeup_vector; | |
57 | u32 vector_width; | |
58 | u64 kernel_s3_resume_vector; | |
59 | } __packed; | |
60 | ||
61 | /* | |
62 | * shared memory page used for communication between tboot and kernel | |
63 | */ | |
64 | struct tboot { | |
65 | /* | |
66 | * version 3+ fields: | |
67 | */ | |
68 | ||
69 | /* TBOOT_UUID */ | |
70 | u8 uuid[16]; | |
71 | ||
72 | /* version number: 5 is current */ | |
73 | u32 version; | |
74 | ||
75 | /* physical addr of tb_log_t log */ | |
76 | u32 log_addr; | |
77 | ||
78 | /* | |
79 | * physical addr of entry point for tboot shutdown and | |
80 | * type of shutdown (TB_SHUTDOWN_*) being requested | |
81 | */ | |
82 | u32 shutdown_entry; | |
83 | u32 shutdown_type; | |
84 | ||
85 | /* kernel-specified ACPI info for Sx shutdown */ | |
86 | struct tboot_acpi_sleep_info acpi_sinfo; | |
87 | ||
88 | /* tboot location in memory (physical) */ | |
89 | u32 tboot_base; | |
90 | u32 tboot_size; | |
91 | ||
92 | /* memory regions (phys addrs) for tboot to MAC on S3 */ | |
93 | u8 num_mac_regions; | |
94 | struct tboot_mac_region mac_regions[MAX_TB_MAC_REGIONS]; | |
95 | ||
96 | ||
97 | /* | |
98 | * version 4+ fields: | |
99 | */ | |
100 | ||
101 | /* symmetric key for use by kernel; will be encrypted on S3 */ | |
102 | u8 s3_key[TB_KEY_SIZE]; | |
103 | ||
104 | ||
105 | /* | |
106 | * version 5+ fields: | |
107 | */ | |
108 | ||
109 | /* used to 4byte-align num_in_wfs */ | |
110 | u8 reserved_align[3]; | |
111 | ||
112 | /* number of processors in wait-for-SIPI */ | |
113 | u32 num_in_wfs; | |
114 | } __packed; | |
115 | ||
116 | /* | |
117 | * UUID for tboot data struct to facilitate matching | |
118 | * defined as {663C8DFF-E8B3-4b82-AABF-19EA4D057A08} by tboot, which is | |
119 | * represented as {} in the char array used here | |
120 | */ | |
121 | #define TBOOT_UUID {0xff, 0x8d, 0x3c, 0x66, 0xb3, 0xe8, 0x82, 0x4b, 0xbf,\ | |
122 | 0xaa, 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8} | |
123 | ||
767dea21 | 124 | bool tboot_enabled(void); |
31625340 | 125 | extern void tboot_probe(void); |
31625340 | 126 | extern void tboot_shutdown(u32 shutdown_type); |
31625340 JC |
127 | extern struct acpi_table_header *tboot_get_dmar_table( |
128 | struct acpi_table_header *dmar_tbl); | |
129 | extern int tboot_force_iommu(void); | |
130 | ||
69575d38 | 131 | #else |
31625340 | 132 | |
cafd6659 | 133 | #define tboot_enabled() 0 |
69575d38 SW |
134 | #define tboot_probe() do { } while (0) |
135 | #define tboot_shutdown(shutdown_type) do { } while (0) | |
136 | #define tboot_sleep(sleep_state, pm1a_control, pm1b_control) \ | |
137 | do { } while (0) | |
138 | #define tboot_get_dmar_table(dmar_tbl) (dmar_tbl) | |
139 | #define tboot_force_iommu() 0 | |
31625340 JC |
140 | |
141 | #endif /* !CONFIG_INTEL_TXT */ | |
142 | ||
69575d38 | 143 | #endif /* _LINUX_TBOOT_H */ |