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: GUEST启动处理。 14 */ 15#include "prt_buildef.h" 16#include "prt_asm_arm_external.h" 17 18DAIF_MASK = 0x1C0 // disable Abort, IRQ, FIQ 19 20.macro REG_INIT xreg 21 mov \xreg, #0 22.endm 23 24 25 .global __os_sys_sp_end 26 .global g_cfgPrimaryCore 27 .global g_gicCoreMap 28 .global OsResetVector 29 .global OsBssInit 30 .global InitSystemSp 31 .global OsVectorTable 32 33 .type __os_sys_sp_end, object 34 .type g_cfgPrimaryCore, object 35 .type g_gicCoreMap, object 36 .type OsResetVector, function 37 .type OsBssInit, function 38 39 .section .text.startup, "ax" 40OsResetVector: 41OsVectTblInit: 42 LDR x0, =OsVectorTable 43 MSR VBAR_EL1, X0 44 45OsGeneralRegsInit: // The X30 general-purpose register is used as the procedure call link register 46 REG_INIT x0 47 REG_INIT x1 48 REG_INIT x2 49 REG_INIT x3 50 REG_INIT x4 51 REG_INIT x5 52 REG_INIT x6 53 REG_INIT x7 54 REG_INIT x8 55 REG_INIT x9 56 REG_INIT x10 57 REG_INIT x11 58 REG_INIT x12 59 REG_INIT x13 60 REG_INIT x14 61 REG_INIT x15 62 REG_INIT x16 63 REG_INIT x17 64 REG_INIT x18 65 REG_INIT x19 66 REG_INIT x20 67 REG_INIT x21 68 REG_INIT x22 69 REG_INIT x23 70 REG_INIT x24 71 REG_INIT x25 72 REG_INIT x26 73 REG_INIT x27 74 REG_INIT x28 75 REG_INIT x29 76 77OsStackBssInit: 78 LDR x0, =__os_sys_sp_end 79 BIC sp, x0, #0xf /* 16-byte alignment for ABI compliance */ 80 BL OsBssInit 81 BL InitSystemSp 82 B OsCoreMapInit 83 84OsCoreMapInit: 85 MRS x1, mpidr_el1 // 读取CoreMap 86 LDR x2, =g_gicCoreMap 87 STR x1, [x2] 88 89OsPrimaryMain: /* OsPrimaryMain函数主核调用 */ 90 BL PRT_HardBootInit /* 用户调用的第一个函数钩子，用户在此处完成Seed随机数生成 */ 91 /* Notes：X9存g_memCanaryRdm地址，X10存__stack_chk_guard地址，w11存g_memCanaryRdm的值 U32类型 */ 92 /* __stack_chk_guard赋值后 g_memCanaryRdm 以及 w11都会被销毁 */ 93#if defined(OS_OPTION_GUARD_STACK) 94 InitChkGuardRnd x9, x10, w11 /* RND 写入 StackChkGuard */ 95#endif 96 97OsEnterMain: 98 BL main 99 100 MOV x2, DAIF_MASK 101 MSR DAIF, x2 102 103EXITLOOP: 104 B EXITLOOP 105 106 .text 107