1/* 2 * Copyright (c) 2013-2020, 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#define OS_TASK_STATUS_RUNNING 0x0010 33#define VIC_TSPDR 0XE000EC08 34 35#ifdef CPU_CK804 36.section .text 37.align 2 38.type HalStartToRun, %function 39.global HalStartToRun 40HalStartToRun: 41 lrw r1, g_losTask 42 lrw r2, g_losTask + 4 43 44 ldw r0, (r2) 45 46 st.w r0, (r1) 47 st.w r0, (r2) 48 49 ldw sp, (r0) 50 51 ldw r0, (sp, 128) 52 mtcr r0, epc 53 ldw r0, (sp, 124) 54 mtcr r0, epsr 55 ldw r15, (sp, 56) 56 ldm r0-r13, (sp) 57 addi sp, 60 58 ldm r16-r31, (sp) 59 addi sp, 72 60 61 rte 62 63.align 2 64.type HalTaskContextSwitch, %function 65.global HalTaskContextSwitch 66HalTaskContextSwitch: 67 lrw r0, VIC_TSPDR 68 bgeni r1, 0 69 stw r1, (r0) 70 nop 71 nop 72 nop 73 rts 74 75.align 2 76.type tspend_handler, %function 77.global tspend_handler 78tspend_handler: 79 80 subi sp, 132 81 stm r0-r13, (sp) 82 stw r15, (sp, 56) 83 addi r0, sp, 60 84 stm r16-r31, (r0) 85 mfcr r1, epsr 86 stw r1, (sp, 124) 87 mfcr r1, epc 88 stw r1, (sp, 128) 89 90 jbsr OsSchedTaskSwitch 91 bez r0, ret_con 92 93 lrw r2, g_losTask 94 ldw r0, (r2) 95 stw sp, (r0) 96 97 lrw r3, g_losTask + 4 98 ldw r0, (r3) 99 stw r0, (r2) 100 101 ldw sp, (r0) 102 103 ret_con: 104 ldw r0, (sp, 128) 105 mtcr r0, epc 106 ldw r0, (sp, 124) 107 mtcr r0, epsr 108 ldw r15, (sp, 56) 109 ldm r0-r13, (sp) 110 addi sp, 60 111 ldm r16-r31, (sp) 112 113 addi sp, 72 114 115 rte 116 117#else 118.section .text 119.align 2 120.type HalStartToRun, %function 121.global HalStartToRun 122HalStartToRun: 123 lrw r1, g_losTask 124 lrw r2, g_losTask + 4 125 126 ldw r0, (r2) 127 128 st.w r0, (r1) 129 st.w r0, (r2) 130 131 ldw sp, (r0) 132 133 ldw r0, (sp, 64) 134 mtcr r0, epc 135 ldw r0, (sp, 60) 136 mtcr r0, epsr 137 ldw r15, (sp, 56) 138 ldm r0-r13, (sp) 139 140 rte 141 142.align 2 143.type HalTaskContextSwitch, %function 144.global HalTaskContextSwitch 145HalTaskContextSwitch: 146 147 subi sp, 68 148 stm r0-r13, (sp) 149 stw r15, (sp, 56) 150 mfcr r1, psr 151 stw r1, (sp, 60) 152 stw r15, (sp, 64) 153 lrw r2, g_losTask 154 ldw r0, (r2) 155 stw sp, (r0) 156 157 lrw r3, g_losTask + 4 158 ldw r0, (r3) 159 stw r0, (r2) 160 161 ldw sp, (r0) 162 ldw r0, (sp, 64) 163 mtcr r0, epc 164 ldw r0, (sp, 60) 165 mtcr r0, epsr 166 ldw r15, (sp, 56) 167 ldm r0-r13, (sp) 168 169 addi sp, 68 170 171 rte 172 173#endif 174