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57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* cpu.c - MC1322X architecture common support functions
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* Copyright (C) 2013 Oliver Hahm <oliver.hahm@inria.fr>
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*
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* This source code is licensed under the GNU Lesser General Public License,
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* Version 2. See the file LICENSE for more details.
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*
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* This file is part of RIOT.
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*
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*/
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#include "mc1322x.h"
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#include "lpm.h"
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__attribute__((naked,noreturn)) void arm_reset(void)
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{
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dINT();
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CRM->SW_RST = SW_RST_VAL;
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while(1);
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}
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enum lpm_mode lpm_set(enum lpm_mode target) {
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return LPM_ON;
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}
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/******************************************************************************
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** Function name: cpu_install_irq
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**
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** Descriptions: Install interrupt handler
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** parameters: Interrupt number, interrupt handler address,
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** interrupt priority
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** Returned value: true or false, return false if IntNum is out of range
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**
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******************************************************************************/
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#define VIC_BASE_ADDR 0xFFFFF000
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bool cpu_install_irq(int IntNumber, void *HandlerAddr, int Priority)
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{
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int *vect_addr;
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int *vect_cntl;
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VICIntEnClr = 1 << IntNumber; /* Disable Interrupt */
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if (IntNumber >= VIC_SIZE) {
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return (false);
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}
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else {
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/* find first un-assigned VIC address for the handler */
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vect_addr = (int *)(VIC_BASE_ADDR + VECT_ADDR_INDEX + IntNumber * 4);
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vect_cntl = (int *)(VIC_BASE_ADDR + VECT_CNTL_INDEX + IntNumber * 4);
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*vect_addr = (int)HandlerAddr; /* set interrupt vector */
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*vect_cntl = Priority;
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VICIntEnable = 1 << IntNumber; /* Enable Interrupt */
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return(true);
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}
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}
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