93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SGX_H
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#define SGX_H
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#define CPUID_SGX_LEAF 0x12U
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#define CPUID_SGX_EPC_SUBLEAF_BASE 0x2U
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#define CPUID_SGX_EPC_TYPE_MASK 0xFU
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#define CPUID_SGX_EPC_TYPE_INVALID 0x0U
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#define CPUID_SGX_EPC_TYPE_VALID 0x1U
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#define CPUID_SGX_EPC_HIGH_MASK 0x000FFFFFU
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#define CPUID_SGX_EPC_LOW_MASK 0xFFFFF000U
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#define MAX_EPC_SECTIONS 4U
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/**
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* @file sgx.h
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*
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* @brief public APIs for SGX
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*/
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/**
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* @brief SGX
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*
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* @defgroup acrn_sgx ACRN SGX
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* @{
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*/
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struct epc_section
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{
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uint64_t base; /* EPC section base, must be page aligned */
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uint64_t size; /* EPC section size in byte, must be page aligned */
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};
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struct epc_map
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{
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uint64_t hpa; /* EPC reource address in host, must be page aligned */
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uint64_t gpa; /* EPC reource address in guest, must be page aligned */
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uint64_t size; /* EPC reource size in byte, must be page aligned */
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};
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/**
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* @brief Get physcial EPC sections of the platform.
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*
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* @retval Physical EPC sections of the platform
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*
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*/
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struct epc_section* get_phys_epc(void);
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/**
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* @brief Get EPC resource information for a specific VM.
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*
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* @param[in] vm_id VM ID to specify a VM
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*
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* @retval EPC sections for a VM
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*
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* @pre vm_id < CONFIG_MAX_VM_NUM
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*
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*/
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struct epc_map* get_epc_mapping(uint16_t vm_id);
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/**
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* @brief If SGX support is enabled or not for a specific VM.
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*
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* @param[in] vm_id VM ID to specify a VM
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*
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* @retval True when SGX is supported in the specific VM
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* @retval False When SGX is not supported in the specific VM
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*
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* @pre vm_id < CONFIG_MAX_VM_NUM
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*
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*/
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bool is_vsgx_supported(uint16_t vm_id);
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/**
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* @brief SGX initialization.
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*
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* Init SGX and parition EPC resource for VMs.
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*
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* @retval 0 on success
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* @retval <0 on failure
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*
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*/
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int32_t init_sgx(void);
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/**
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* @}
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*/
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#endif
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