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_tick_pri.h"
33 #include "los_swtmr_pri.h"
34 #include "los_sched_pri.h"
35 #ifdef LOSCFG_KERNEL_VDSO
36 #include "los_vdso.h"
37 #endif
38
39
40 LITE_OS_SEC_DATA_INIT UINT32 g_sysClock;
41 LITE_OS_SEC_DATA_INIT UINT32 g_tickPerSecond;
42 LITE_OS_SEC_BSS DOUBLE g_cycle2NsScale;
43
44 /* spinlock for task module */
45 LITE_OS_SEC_BSS SPIN_LOCK_INIT(g_tickSpin);
46
47 /*
48 * Description : Tick interruption handler
49 */
OsTickHandler(VOID)50 LITE_OS_SEC_TEXT VOID OsTickHandler(VOID)
51 {
52 #ifdef LOSCFG_SCHED_TICK_DEBUG
53 OsSchedDebugRecordData();
54 #endif
55
56 #ifdef LOSCFG_KERNEL_VDSO
57 OsVdsoTimevalUpdate();
58 #endif
59
60 #ifdef LOSCFG_BASE_CORE_TICK_HW_TIME
61 HalClockIrqClear(); /* diff from every platform */
62 #endif
63
64 OsSchedTick();
65 }
66
67