2 * Userspace interface for AMD Secure Encrypted Virtualization (SEV)
3 * platform management commands.
5 * Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
7 * Author: Brijesh Singh <brijesh.singh@amd.com>
9 * SEV spec 0.14 is available at:
10 * http://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
17 #ifndef __PSP_SEV_USER_H__
18 #define __PSP_SEV_USER_H__
20 #include <linux/types.h>
23 * SEV platform commands
26 SEV_FACTORY_RESET = 0,
38 * SEV Firmware status code
42 SEV_RET_INVALID_PLATFORM_STATE,
43 SEV_RET_INVALID_GUEST_STATE,
44 SEV_RET_INAVLID_CONFIG,
46 SEV_RET_ALREADY_OWNED,
47 SEV_RET_INVALID_CERTIFICATE,
48 SEV_RET_POLICY_FAILURE,
50 SEV_RET_INVALID_ADDRESS,
51 SEV_RET_BAD_SIGNATURE,
52 SEV_RET_BAD_MEASUREMENT,
55 SEV_RET_WBINVD_REQUIRED,
56 SEV_RET_DFFLUSH_REQUIRED,
57 SEV_RET_INVALID_GUEST,
58 SEV_RET_INVALID_COMMAND,
60 SEV_RET_HWSEV_RET_PLATFORM,
61 SEV_RET_HWSEV_RET_UNSAFE,
67 * struct sev_user_data_status - PLATFORM_STATUS command parameters
69 * @major: major API version
70 * @minor: minor API version
71 * @state: platform state
72 * @flags: platform config flags
73 * @build: firmware build id for API version
74 * @guest_count: number of active guests
76 struct sev_user_data_status {
77 __u8 api_major; /* Out */
78 __u8 api_minor; /* Out */
80 __u32 flags; /* Out */
82 __u32 guest_count; /* Out */
86 * struct sev_user_data_pek_csr - PEK_CSR command parameters
88 * @address: PEK certificate chain
89 * @length: length of certificate
91 struct sev_user_data_pek_csr {
92 __u64 address; /* In */
93 __u32 length; /* In/Out */
97 * struct sev_user_data_cert_import - PEK_CERT_IMPORT command parameters
99 * @pek_address: PEK certificate chain
100 * @pek_len: length of PEK certificate
101 * @oca_address: OCA certificate chain
102 * @oca_len: length of OCA certificate
104 struct sev_user_data_pek_cert_import {
105 __u64 pek_cert_address; /* In */
106 __u32 pek_cert_len; /* In */
107 __u64 oca_cert_address; /* In */
108 __u32 oca_cert_len; /* In */
112 * struct sev_user_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
114 * @pdh_address: PDH certificate address
115 * @pdh_len: length of PDH certificate
116 * @cert_chain_address: PDH certificate chain
117 * @cert_chain_len: length of PDH certificate chain
119 struct sev_user_data_pdh_cert_export {
120 __u64 pdh_cert_address; /* In */
121 __u32 pdh_cert_len; /* In/Out */
122 __u64 cert_chain_address; /* In */
123 __u32 cert_chain_len; /* In/Out */
127 * struct sev_issue_cmd - SEV ioctl parameters
129 * @cmd: SEV commands to execute
130 * @opaque: pointer to the command structure
131 * @error: SEV FW return code on failure
133 struct sev_issue_cmd {
136 __u32 error; /* Out */
139 #define SEV_IOC_TYPE 'S'
140 #define SEV_ISSUE_CMD _IOWR(SEV_IOC_TYPE, 0x0, struct sev_issue_cmd)
142 #endif /* __PSP_USER_SEV_H */