sysinit.c

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/*
 * @brief Common SystemInit function for LPC18xx/LPC43xx chips
 *
 * @note
 * Copyright 2013-2014, 2019, 2020 NXP
 * All rights reserved.
 *
 * @par
 * NXP Confidential. This software is owned or controlled by NXP and may only be
 * used strictly in accordance with the applicable license terms.
 * 
 * By expressly accepting such terms or by downloading, installing, activating
 * and/or otherwise using the software, you are agreeing that you have read, and
 * that you agree to comply with and are bound by, such license terms.
 * 
 * If you do not agree to be bound by the applicable license terms, then you may not
 * retain, install, activate or otherwise use the software.
 */
 
#if defined(NO_BOARD_LIB)
#include "chip.h"
#else
#include "board.h"
#endif
 
/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/
 
/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/
 
#if defined(NO_BOARD_LIB)
const uint32_t ExtRateIn = 0;
const uint32_t OscRateIn = 12000000;
#endif
 
/*****************************************************************************
 * Private functions
 ****************************************************************************/
 
/*****************************************************************************
 * Public functions
 ****************************************************************************/
 
/* Set up and initialize hardware prior to call to main */
void SystemInit(void)
{
#if defined(CORE_M3) || defined(CORE_M4)
    unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08;
 
#if defined(__IAR_SYSTEMS_ICC__)
    extern void *__vector_table;
 
    *pSCB_VTOR = (unsigned int) &__vector_table;
#elif defined(__CODE_RED)
    extern void *g_pfnVectors;
 
    *pSCB_VTOR = (unsigned int) &g_pfnVectors;
#elif defined(__ARMCC_VERSION)
    extern void *__Vectors;
 
    *pSCB_VTOR = (unsigned int) &__Vectors;
#else
    extern void *g_pfnVectors;
 
    *pSCB_VTOR = (unsigned int) &g_pfnVectors;
#endif
 
#if defined(__FPU_PRESENT) && __FPU_PRESENT == 1
    fpuInit();
#endif
 
#if defined(NO_BOARD_LIB)
    /* Chip specific SystemInit */
    Chip_SystemInit();
#else
    /* Board specific SystemInit */
    Board_SystemInit();
#endif
 
#endif /* defined(CORE_M3) || defined(CORE_M4) */
}