1 /*
2 ** ###################################################################
3 ** Processors: MIMX8MM6CVTKZ
4 ** MIMX8MM6DVTLZ
5 **
6 ** Compilers: GNU C Compiler
7 ** IAR ANSI C/C++ Compiler for ARM
8 ** Keil ARM C/C++ Compiler
9 **
10 ** Reference manual: MX8MMRM, Rev.0, 02/2019
11 ** Version: rev. 4.0, 2019-02-18
12 ** Build: b211020
13 **
14 ** Abstract:
15 ** Provides a system configuration function and a global variable that
16 ** contains the system frequency. It configures the device and initializes
17 ** the oscillator (PLL) that is part of the microcontroller device.
18 **
19 ** Copyright 2016 Freescale Semiconductor, Inc.
20 ** Copyright 2016-2021 NXP
21 ** All rights reserved.
22 **
23 ** SPDX-License-Identifier: BSD-3-Clause
24 **
25 ** http: www.nxp.com
26 ** mail: support@nxp.com
27 **
28 ** Revisions:
29 ** - rev. 1.0 (2018-03-26)
30 ** Initial version.
31 ** - rev. 2.0 (2018-07-20)
32 ** Rev.A Header EAR
33 ** - rev. 3.0 (2018-10-24)
34 ** Rev.B Header PRC
35 ** - rev. 4.0 (2019-02-18)
36 ** Rev.0 Header RFP
37 **
38 ** ###################################################################
39 */
40
41 /*!
42 * @file MIMX8MM6_ca53
43 * @version 4.0
44 * @date 2019-02-18
45 * @brief Device specific configuration file for MIMX8MM6_ca53 (implementation
46 * file)
47 *
48 * Provides a system configuration function and a global variable that contains
49 * the system frequency. It configures the device and initializes the oscillator
50 * (PLL) that is part of the microcontroller device.
51 */
52
53 #include <stdint.h>
54 #include "fsl_device_registers.h"
55
56
57
58 /* ----------------------------------------------------------------------------
59 -- Core clock
60 ---------------------------------------------------------------------------- */
61
62 uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK;
63
64 /* ----------------------------------------------------------------------------
65 -- SystemInit()
66 ---------------------------------------------------------------------------- */
67
SystemInit(void)68 void SystemInit (void) {
69 #if ((__FPU_PRESENT == 1) && (__FPU_USED == 1))
70 __ASM volatile("mov x0, #(3 << 20) \n\t"
71 "msr cpacr_el1, x0");
72 #endif /* ((__FPU_PRESENT == 1) && (__FPU_USED == 1)) */
73 SystemInitHook();
74
75 ARM_TIMER_GetFreq(&SystemCoreClock);
76 }
77
78 /* ----------------------------------------------------------------------------
79 -- SystemCoreClockUpdate()
80 ---------------------------------------------------------------------------- */
81
SystemCoreClockUpdate(void)82 void SystemCoreClockUpdate (void) {
83 }
84
85 /* ----------------------------------------------------------------------------
86 -- SystemInitHook()
87 ---------------------------------------------------------------------------- */
88
SystemInitHook(void)89 __attribute__ ((weak)) void SystemInitHook (void) {
90 /* Void implementation of the weak function. */
91 }
92
