mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-06-21 10:52:50 +02:00
626f0ecb98
- use recursive stage 1 page table (thanks @fincs for this idea) - NULL now unmapped - no identity mapping - image + GICv2 now mapped at the same address for every platform - tempbss mapped just after "real" bss, can now steal unused mem from the latter - no hardcoded VAs for other MMIO devices - tegra: remove timers, use the generic timer instead
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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* Copyright (c) 2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 "timer.h"
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#include "irq.h"
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#include "exceptions.h"
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u64 g_timerFreq = 0;
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void timerInit(void)
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{
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timerConfigure(false, false);
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if (currentCoreCtx->isBootCore) {
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g_timerFreq = GET_SYSREG(cntfrq_el0);
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}
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}
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void timerInterruptHandler(void)
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{
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// Mask the timer interrupt until reprogrammed
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timerConfigure(false, false);
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}
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void timerWaitUsecs(u64 us)
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{
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exceptionEnterInterruptibleHypervisorCode();
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u64 mask = unmaskIrq();
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timerSetTimeoutUs(us);
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do {
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__wfi();
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} while (!timerGetInterruptStatus());
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restoreInterruptFlags(mask);
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}
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