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48 lines
1.5 KiB
C
Executable File
48 lines
1.5 KiB
C
Executable File
/*
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* This file is part of GodMode9
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* Copyright (C) 2019 Wolfvak
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#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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