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_sys_pri.h"
33 #include "los_hwi.h"
34
35
OsTickInit(UINT32 systemClock,UINT32 tickPerSecond)36 LITE_OS_SEC_TEXT_INIT UINT32 OsTickInit(UINT32 systemClock, UINT32 tickPerSecond)
37 {
38 if ((systemClock == 0) ||
39 (tickPerSecond == 0) ||
40 (tickPerSecond > systemClock)) {
41 return LOS_ERRNO_TICK_CFG_INVALID;
42 }
43 HalClockInit();
44
45 return LOS_OK;
46 }
47
OsTickStart(VOID)48 LITE_OS_SEC_TEXT_INIT VOID OsTickStart(VOID)
49 {
50 HalClockStart();
51 }
52
LOS_GetCpuCycle(UINT32 * highCnt,UINT32 * lowCnt)53 LITE_OS_SEC_TEXT_MINOR VOID LOS_GetCpuCycle(UINT32 *highCnt, UINT32 *lowCnt)
54 {
55 UINT64 cycle = HalClockGetCycles();
56
57 *highCnt = cycle >> 32; /* 32: offset 32 bits and retain high bits */
58 *lowCnt = cycle & 0xFFFFFFFFU;
59 }
60
LOS_CurrNanosec(VOID)61 LITE_OS_SEC_TEXT_MINOR UINT64 LOS_CurrNanosec(VOID)
62 {
63 UINT64 cycle = HalClockGetCycles();
64 return (cycle / g_sysClock) * OS_SYS_NS_PER_SECOND + (cycle % g_sysClock) * OS_SYS_NS_PER_SECOND / g_sysClock;
65 }
66
LOS_Udelay(UINT32 usecs)67 LITE_OS_SEC_TEXT_MINOR VOID LOS_Udelay(UINT32 usecs)
68 {
69 HalDelayUs(usecs);
70 }
71
LOS_Mdelay(UINT32 msecs)72 LITE_OS_SEC_TEXT_MINOR VOID LOS_Mdelay(UINT32 msecs)
73 {
74 HalDelayUs(msecs * 1000); /* 1000 : 1ms = 1000us */
75 }
76
77