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0b3a830bb4
The GET_ID command, added as of SEV API v0.16, allows the SEV firmware to be queried about a unique CPU ID. This unique ID can then be used to obtain the public certificate containing the Chip Endorsement Key (CEK) public key signed by the AMD SEV Signing Key (ASK). For more information please refer to "Section 5.12 GET_ID" of https://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
155 lines
3.7 KiB
C
155 lines
3.7 KiB
C
/*
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* Userspace interface for AMD Secure Encrypted Virtualization (SEV)
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* platform management commands.
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*
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* Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*
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* SEV spec 0.14 is available at:
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* http://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __PSP_SEV_USER_H__
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#define __PSP_SEV_USER_H__
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#include <linux/types.h>
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/**
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* SEV platform commands
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*/
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enum {
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SEV_FACTORY_RESET = 0,
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SEV_PLATFORM_STATUS,
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SEV_PEK_GEN,
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SEV_PEK_CSR,
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SEV_PDH_GEN,
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SEV_PDH_CERT_EXPORT,
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SEV_PEK_CERT_IMPORT,
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SEV_GET_ID,
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SEV_MAX,
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};
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/**
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* SEV Firmware status code
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*/
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typedef enum {
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SEV_RET_SUCCESS = 0,
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SEV_RET_INVALID_PLATFORM_STATE,
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SEV_RET_INVALID_GUEST_STATE,
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SEV_RET_INAVLID_CONFIG,
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SEV_RET_INVALID_LEN,
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SEV_RET_ALREADY_OWNED,
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SEV_RET_INVALID_CERTIFICATE,
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SEV_RET_POLICY_FAILURE,
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SEV_RET_INACTIVE,
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SEV_RET_INVALID_ADDRESS,
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SEV_RET_BAD_SIGNATURE,
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SEV_RET_BAD_MEASUREMENT,
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SEV_RET_ASID_OWNED,
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SEV_RET_INVALID_ASID,
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SEV_RET_WBINVD_REQUIRED,
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SEV_RET_DFFLUSH_REQUIRED,
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SEV_RET_INVALID_GUEST,
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SEV_RET_INVALID_COMMAND,
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SEV_RET_ACTIVE,
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SEV_RET_HWSEV_RET_PLATFORM,
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SEV_RET_HWSEV_RET_UNSAFE,
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SEV_RET_UNSUPPORTED,
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SEV_RET_MAX,
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} sev_ret_code;
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/**
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* struct sev_user_data_status - PLATFORM_STATUS command parameters
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*
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* @major: major API version
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* @minor: minor API version
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* @state: platform state
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* @flags: platform config flags
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* @build: firmware build id for API version
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* @guest_count: number of active guests
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*/
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struct sev_user_data_status {
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__u8 api_major; /* Out */
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__u8 api_minor; /* Out */
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__u8 state; /* Out */
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__u32 flags; /* Out */
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__u8 build; /* Out */
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__u32 guest_count; /* Out */
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} __packed;
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/**
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* struct sev_user_data_pek_csr - PEK_CSR command parameters
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*
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* @address: PEK certificate chain
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* @length: length of certificate
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*/
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struct sev_user_data_pek_csr {
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__u64 address; /* In */
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__u32 length; /* In/Out */
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} __packed;
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/**
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* struct sev_user_data_cert_import - PEK_CERT_IMPORT command parameters
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*
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* @pek_address: PEK certificate chain
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* @pek_len: length of PEK certificate
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* @oca_address: OCA certificate chain
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* @oca_len: length of OCA certificate
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*/
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struct sev_user_data_pek_cert_import {
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__u64 pek_cert_address; /* In */
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__u32 pek_cert_len; /* In */
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__u64 oca_cert_address; /* In */
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__u32 oca_cert_len; /* In */
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} __packed;
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/**
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* struct sev_user_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
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*
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* @pdh_address: PDH certificate address
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* @pdh_len: length of PDH certificate
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* @cert_chain_address: PDH certificate chain
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* @cert_chain_len: length of PDH certificate chain
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*/
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struct sev_user_data_pdh_cert_export {
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__u64 pdh_cert_address; /* In */
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__u32 pdh_cert_len; /* In/Out */
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__u64 cert_chain_address; /* In */
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__u32 cert_chain_len; /* In/Out */
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} __packed;
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/**
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* struct sev_user_data_get_id - GET_ID command parameters
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*
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* @socket1: Buffer to pass unique ID of first socket
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* @socket2: Buffer to pass unique ID of second socket
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*/
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struct sev_user_data_get_id {
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__u8 socket1[64]; /* Out */
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__u8 socket2[64]; /* Out */
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} __packed;
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/**
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* struct sev_issue_cmd - SEV ioctl parameters
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*
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* @cmd: SEV commands to execute
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* @opaque: pointer to the command structure
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* @error: SEV FW return code on failure
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*/
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struct sev_issue_cmd {
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__u32 cmd; /* In */
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__u64 data; /* In */
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__u32 error; /* Out */
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} __packed;
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#define SEV_IOC_TYPE 'S'
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#define SEV_ISSUE_CMD _IOWR(SEV_IOC_TYPE, 0x0, struct sev_issue_cmd)
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#endif /* __PSP_USER_SEV_H */
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