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https://github.com/RIOT-OS/RIOT.git
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742bcad912
Unify cpu_init for all Kinetis CPUs to reduce code duplication. Updated the MCG driver implementation to make the configuration easier. Most clock settings are initialized by kinetis_mcg_init() called from cpu_init. Board specific external clock source initialization (FRDM-K64F, PhyNode) needs to be performed in board_init instead of in cpu_init.
41 lines
1019 B
C
41 lines
1019 B
C
/*
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* Copyright (C) 2017 SKF AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup cpu_kinetis_common
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* @{
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*
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* @file
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* @brief Kinetis CPU initialization
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*
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
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* @}
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*/
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#include "cpu.h"
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#include "periph/init.h"
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#include "mcg.h"
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/**
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* @brief Initialize the CPU, set IRQ priorities
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*/
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void cpu_init(void)
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{
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/* initialize the Cortex-M core */
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cortexm_init();
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/* Clear LLS protection */
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/* Clear VLPS, VLPW, VLPR protection */
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/* Note: This register can only be written once after each reset, so we must
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* enable all power modes that we wish to use. */
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SMC->PMPROT |= SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK;
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/* initialize the CPU clocking provided by the MCG module */
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kinetis_mcg_init();
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/* trigger static peripheral initialization */
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periph_init();
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}
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