234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
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/*
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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 API specification is available at: https://developer.amd.com/sev/
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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, /* This command is deprecated, use SEV_GET_ID2 */
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SEV_GET_ID2,
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SNP_PLATFORM_STATUS,
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SNP_COMMIT,
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SNP_SET_CONFIG,
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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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/*
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* This error code is not in the SEV spec. Its purpose is to convey that
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* there was an error that prevented the SEV firmware from being called.
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* The SEV API error codes are 16 bits, so the -1 value will not overlap
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* with possible values from the specification.
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*/
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SEV_RET_NO_FW_CALL = -1,
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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_INVALID_PARAM,
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SEV_RET_RESOURCE_LIMIT,
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SEV_RET_SECURE_DATA_INVALID,
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SEV_RET_INVALID_KEY = 0x27,
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SEV_RET_INVALID_PAGE_SIZE,
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SEV_RET_INVALID_PAGE_STATE,
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SEV_RET_INVALID_MDATA_ENTRY,
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SEV_RET_INVALID_PAGE_OWNER,
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SEV_RET_INVALID_PAGE_AEAD_OFLOW,
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SEV_RET_RMP_INIT_REQUIRED,
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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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} __attribute__((packed));
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#define SEV_STATUS_FLAGS_CONFIG_ES 0x0100
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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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} __attribute__((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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} __attribute__((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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} __attribute__((packed));
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/**
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* struct sev_user_data_get_id - GET_ID command parameters (deprecated)
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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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} __attribute__((packed));
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/**
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* struct sev_user_data_get_id2 - GET_ID command parameters
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* @address: Buffer to store unique ID
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* @length: length of the unique ID
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*/
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struct sev_user_data_get_id2 {
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__u64 address; /* In */
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__u32 length; /* In/Out */
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} __attribute__((packed));
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/**
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* struct sev_user_data_snp_status - SNP status
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*
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* @api_major: API major version
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* @api_minor: API minor version
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* @state: current platform state
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* @is_rmp_initialized: whether RMP is initialized or not
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* @rsvd: reserved
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* @build_id: firmware build id for the API version
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* @mask_chip_id: whether chip id is present in attestation reports or not
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* @mask_chip_key: whether attestation reports are signed or not
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* @vlek_en: VLEK (Version Loaded Endorsement Key) hashstick is loaded
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* @rsvd1: reserved
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* @guest_count: the number of guest currently managed by the firmware
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* @current_tcb_version: current TCB version
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* @reported_tcb_version: reported TCB version
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*/
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struct sev_user_data_snp_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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__u8 is_rmp_initialized:1; /* Out */
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__u8 rsvd:7;
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__u32 build_id; /* Out */
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__u32 mask_chip_id:1; /* Out */
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__u32 mask_chip_key:1; /* Out */
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__u32 vlek_en:1; /* Out */
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__u32 rsvd1:29;
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__u32 guest_count; /* Out */
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__u64 current_tcb_version; /* Out */
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__u64 reported_tcb_version; /* Out */
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} __attribute__((packed));
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/**
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* struct sev_user_data_snp_config - system wide configuration value for SNP.
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*
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* @reported_tcb: the TCB version to report in the guest attestation report.
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* @mask_chip_id: whether chip id is present in attestation reports or not
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* @mask_chip_key: whether attestation reports are signed or not
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* @rsvd: reserved
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* @rsvd1: reserved
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*/
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struct sev_user_data_snp_config {
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__u64 reported_tcb ; /* In */
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__u32 mask_chip_id:1; /* In */
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__u32 mask_chip_key:1; /* In */
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__u32 rsvd:30; /* In */
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__u8 rsvd1[52];
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} __attribute__((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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} __attribute__((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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