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  1. /**************************************************************************//**
  2.  * @file     system_ARMv8MBL.c
  3.  * @brief    CMSIS Device System Source File for
  4.  *           ARMv8MBL Device Series
  5.  * @version  V5.00
  6.  * @date     07. September 2016
  7.  ******************************************************************************/
  8. /*
  9.  * Copyright (c) 2009-2016 ARM Limited. All rights reserved.
  10.  *
  11.  * SPDX-License-Identifier: Apache-2.0
  12.  *
  13.  * Licensed under the Apache License, Version 2.0 (the License); you may
  14.  * not use this file except in compliance with the License.
  15.  * You may obtain a copy of the License at
  16.  *
  17.  * http://www.apache.org/licenses/LICENSE-2.0
  18.  *
  19.  * Unless required by applicable law or agreed to in writing, software
  20.  * distributed under the License is distributed on an AS IS BASIS, WITHOUT
  21.  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  22.  * See the License for the specific language governing permissions and
  23.  * limitations under the License.
  24.  */
  25.  
  26. #include "ARMv8MBL.h"
  27.  
  28. #if defined (__ARM_FEATURE_CMSE) &&  (__ARM_FEATURE_CMSE == 3U)
  29.   #include "partition_ARMv8MBL.h"
  30. #endif
  31.  
  32. /*----------------------------------------------------------------------------
  33.   Define clocks
  34.  *----------------------------------------------------------------------------*/
  35. #define  XTAL            ( 5000000UL)      /* Oscillator frequency */
  36.  
  37. #define  SYSTEM_CLOCK    (5U * XTAL)
  38.  
  39.  
  40. /*----------------------------------------------------------------------------
  41.   Externals
  42.  *----------------------------------------------------------------------------*/
  43. #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
  44.   extern uint32_t __Vectors;
  45. #endif
  46.  
  47. /*----------------------------------------------------------------------------
  48.   System Core Clock Variable
  49.  *----------------------------------------------------------------------------*/
  50. uint32_t SystemCoreClock = SYSTEM_CLOCK;
  51.  
  52.  
  53. /*----------------------------------------------------------------------------
  54.   System Core Clock update function
  55.  *----------------------------------------------------------------------------*/
  56. void SystemCoreClockUpdate (void)
  57. {
  58.   SystemCoreClock = SYSTEM_CLOCK;
  59. }
  60.  
  61. /*----------------------------------------------------------------------------
  62.   System initialization function
  63.  *----------------------------------------------------------------------------*/
  64. void SystemInit (void)
  65. {
  66.  
  67. #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
  68.   SCB->VTOR = (uint32_t) &__Vectors;
  69. #endif
  70.  
  71. #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
  72.   TZ_SAU_Setup();
  73. #endif
  74.  
  75.   SystemCoreClock = SYSTEM_CLOCK;
  76. }
  77.