forked from Mirror/GodMode9
30 lines
781 B
C
Executable File
30 lines
781 B
C
Executable File
#include <types.h>
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#include <arm.h>
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#include "arm/gic.h"
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#include "arm/timer.h"
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#define TIMER_INTERRUPT (0x1E)
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#define REG_TIMER(c, n) REG_ARM_PMR(0x700 + ((c) * 0x100) + (n), u32)
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#define TIMER_THIS_CPU (-1)
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#define REG_TIMER_LOAD(c) *REG_TIMER((c), 0x00)
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#define REG_TIMER_COUNT(c) *REG_TIMER((c), 0x04)
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#define REG_TIMER_CNT(c) *REG_TIMER((c), 0x08)
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#define REG_TIMER_IRQ(c) *REG_TIMER((c), 0x0C)
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#define TIMER_CNT_SCALE(n) ((n) << 8)
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#define TIMER_CNT_INT_EN BIT(2)
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#define TIMER_CNT_RELOAD BIT(1)
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#define TIMER_CNT_ENABLE BIT(0)
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void TIMER_WaitTicks(u32 ticks)
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{
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REG_TIMER_IRQ(TIMER_THIS_CPU) = 1;
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REG_TIMER_CNT(TIMER_THIS_CPU) = 0;
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REG_TIMER_LOAD(TIMER_THIS_CPU) = ticks;
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REG_TIMER_CNT(TIMER_THIS_CPU) = TIMER_CNT_ENABLE;
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while(REG_TIMER_COUNT(TIMER_THIS_CPU));
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}
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