1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "los_context.h"
33 #include "securec.h"
34 #include "ARMCM3.h"
35 #include "los_arch_context.h"
36 #include "los_arch_interrupt.h"
37 #include "los_task.h"
38 #include "los_sched.h"
39 #include "los_interrupt.h"
40 #include "los_debug.h"
41
42 /* ****************************************************************************
43 Function : ArchInit
44 Description : arch init function
45 Input : None
46 Output : None
47 Return : None
48 **************************************************************************** */
ArchInit(VOID)49 LITE_OS_SEC_TEXT_INIT VOID ArchInit(VOID)
50 {
51 HalHwiInit();
52 }
53
54 /* ****************************************************************************
55 Function : ArchSysExit
56 Description : Task exit function
57 Input : None
58 Output : None
59 Return : None
60 **************************************************************************** */
ArchSysExit(VOID)61 LITE_OS_SEC_TEXT_MINOR VOID ArchSysExit(VOID)
62 {
63 (VOID)LOS_IntLock();
64 while (1) {
65 }
66 }
67
68 /* ****************************************************************************
69 Function : ArchTskStackInit
70 Description : Task stack initialization function
71 Input : taskID --- TaskID
72 stackSize --- Total size of the stack
73 topStack --- Top of task's stack
74 Output : None
75 Return : Context pointer
76 **************************************************************************** */
ArchTskStackInit(UINT32 taskID,UINT32 stackSize,VOID * topStack)77 LITE_OS_SEC_TEXT_INIT VOID *ArchTskStackInit(UINT32 taskID, UINT32 stackSize, VOID *topStack)
78 {
79 TaskContext *context = (TaskContext *)((UINTPTR)topStack + stackSize - sizeof(TaskContext));
80
81 #if ((defined(__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
82 (defined(__FPU_USED) && (__FPU_USED == 1U)))
83 context->S16 = 0xAA000010;
84 context->S17 = 0xAA000011;
85 context->S18 = 0xAA000012;
86 context->S19 = 0xAA000013;
87 context->S20 = 0xAA000014;
88 context->S21 = 0xAA000015;
89 context->S22 = 0xAA000016;
90 context->S23 = 0xAA000017;
91 context->S24 = 0xAA000018;
92 context->S25 = 0xAA000019;
93 context->S26 = 0xAA00001A;
94 context->S27 = 0xAA00001B;
95 context->S28 = 0xAA00001C;
96 context->S29 = 0xAA00001D;
97 context->S30 = 0xAA00001E;
98 context->S31 = 0xAA00001F;
99 context->S0 = 0xAA000000;
100 context->S1 = 0xAA000001;
101 context->S2 = 0xAA000002;
102 context->S3 = 0xAA000003;
103 context->S4 = 0xAA000004;
104 context->S5 = 0xAA000005;
105 context->S6 = 0xAA000006;
106 context->S7 = 0xAA000007;
107 context->S8 = 0xAA000008;
108 context->S9 = 0xAA000009;
109 context->S10 = 0xAA00000A;
110 context->S11 = 0xAA00000B;
111 context->S12 = 0xAA00000C;
112 context->S13 = 0xAA00000D;
113 context->S14 = 0xAA00000E;
114 context->S15 = 0xAA00000F;
115 context->FPSCR = 0x00000000;
116 context->NO_NAME = 0xAA000011;
117 #endif
118
119 context->uwR4 = 0x04040404L;
120 context->uwR5 = 0x05050505L;
121 context->uwR6 = 0x06060606L;
122 context->uwR7 = 0x07070707L;
123 context->uwR8 = 0x08080808L;
124 context->uwR9 = 0x09090909L;
125 context->uwR10 = 0x10101010L;
126 context->uwR11 = 0x11111111L;
127 context->uwPriMask = 0;
128 context->uwR0 = taskID;
129 context->uwR1 = 0x01010101L;
130 context->uwR2 = 0x02020202L;
131 context->uwR3 = 0x03030303L;
132 context->uwR12 = 0x12121212L;
133 context->uwLR = (UINT32)(UINTPTR)ArchSysExit;
134 context->uwPC = (UINT32)(UINTPTR)OsTaskEntry;
135 context->uwxPSR = 0x01000000L;
136
137 return (VOID *)context;
138 }
139
ArchStartSchedule(VOID)140 LITE_OS_SEC_TEXT_INIT UINT32 ArchStartSchedule(VOID)
141 {
142 (VOID)LOS_IntLock();
143 OsSchedStart();
144 HalStartToRun();
145 return LOS_OK; /* never return */
146 }
147