1 /* 2 * Copyright (c) 2022-2022 Huawei Technologies Co., Ltd. All rights reserved. 3 * 4 * UniProton is licensed under Mulan PSL v2. 5 * You can use this software according to the terms and conditions of the Mulan PSL v2. 6 * You may obtain a copy of Mulan PSL v2 at: 7 * http://license.coscl.org.cn/MulanPSL2 8 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, 9 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, 10 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. 11 * See the Mulan PSL v2 for more details. 12 * Create: 2022-11-22 13 * Description: cpu架构相关的外部头文件 14 */ 15 #ifndef OS_CPU_ARMV8_H 16 #define OS_CPU_ARMV8_H 17 18 #include "prt_typedef.h" 19 20 #ifdef __cplusplus 21 #if __cplusplus 22 extern "C" { 23 #endif /* __cpluscplus */ 24 #endif /* __cpluscplus */ 25 26 // CurrentEl等级 27 #define CURRENT_EL_2 0x8 28 #define CURRENT_EL_1 0x4 29 #define CURRENT_EL_0 0x0 30 31 #define DAIF_DBG_BIT (1U << 3) 32 #define DAIF_ABT_BIT (1U << 2) 33 #define DAIF_IRQ_BIT (1U << 1) 34 #define DAIF_FIQ_BIT (1U << 0) 35 36 #define INT_MASK (1U << 7) 37 #define OS_CORE_ID_MASK 0xFFU 38 #define OS_CORE_MPID_CPUID(mpid) (((mpid) | ((mpid) >> 8)) & OS_CORE_ID_MASK) 39 40 /* 41 * 任务上下文的结构体定义。 42 */ 43 struct TskContext { 44 /* *< 当前物理寄存器R0-R12 */ 45 uintptr_t elr; // 返回地址 46 uintptr_t spsr; 47 uintptr_t far; 48 uintptr_t esr; 49 uintptr_t xzr; 50 uintptr_t x30; 51 uintptr_t x29; 52 uintptr_t x28; 53 uintptr_t x27; 54 uintptr_t x26; 55 uintptr_t x25; 56 uintptr_t x24; 57 uintptr_t x23; 58 uintptr_t x22; 59 uintptr_t x21; 60 uintptr_t x20; 61 uintptr_t x19; 62 uintptr_t x18; 63 uintptr_t x17; 64 uintptr_t x16; 65 uintptr_t x15; 66 uintptr_t x14; 67 uintptr_t x13; 68 uintptr_t x12; 69 uintptr_t x11; 70 uintptr_t x10; 71 uintptr_t x09; 72 uintptr_t x08; 73 uintptr_t x07; 74 uintptr_t x06; 75 uintptr_t x05; 76 uintptr_t x04; 77 uintptr_t x03; 78 uintptr_t x02; 79 uintptr_t x01; 80 uintptr_t x00; 81 }; 82 83 /* 84 * 描述: 读取当前核号 85 * 使用mpidr 寄存器 (64bit) 根据核的线程模式获取核号 86 * bit 63-40 39-32 31 30 29~25 24 23-16 15-8 7~0 87 * res0 aff3 res1 u res0 mt aff2 aff1 aff0 88 */ OsGetCoreID(void)89OS_SEC_ALW_INLINE INLINE U32 OsGetCoreID(void) 90 { 91 U64 mpid; 92 OS_EMBED_ASM("MRS %0, MPIDR_EL1" : "=r"(mpid)::"memory", "cc"); 93 OS_EMBED_ASM("dmb sy" ::: "memory"); 94 /* single-thread 模式下，核号取AFF0 AF1为0 */ 95 /* muti-thread 模式下，核号取AFF1 AF0为0 */ 96 /* 综上核号计算采用AFF0 + AFF1 */ 97 return OS_CORE_MPID_CPUID(mpid); 98 } 99 100 /* 101 * 获取当前核ID 102 */ PRT_GetCoreID(void)103OS_SEC_ALW_INLINE INLINE U32 PRT_GetCoreID(void) 104 { 105 return OsGetCoreID(); 106 } 107 108 #define PRT_DSB() OS_EMBED_ASM("DSB sy" : : : "memory") 109 #define PRT_DMB() OS_EMBED_ASM("DMB sy" : : : "memory") 110 #define PRT_ISB() OS_EMBED_ASM("ISB" : : : "memory") 111 112 #ifdef __cplusplus 113 #if __cplusplus 114 } 115 #endif /* __cpluscplus */ 116 #endif /* __cpluscplus */ 117 118 #endif /* OS_CPU_ARMV8_H */ 119