ca60e24ad9
* introduce new syscall (core-only) to create privileged threads * take the privilege level of the thread into account when doing a context switch * map kernel segment as accessable for privileged code only Ref #2091
39 lines
805 B
C++
39 lines
805 B
C++
/*
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* \brief Kernel cpu driver implementations specific to ARM
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* \author Martin Stein
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* \author Stefan Kalkowski
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* \date 2014-01-14
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*/
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/*
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* Copyright (C) 2014-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* core includes */
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#include <kernel/cpu.h>
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#include <kernel/pd.h>
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#include <kernel/perf_counter.h>
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#include <pic.h>
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void Kernel::Cpu::init(Kernel::Pic &pic)
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{
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/* enable performance counter */
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perf_counter()->enable();
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/* enable timer interrupt */
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pic.unmask(_timer.interrupt_id(), id());
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}
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void Kernel::Cpu_domain_update::_domain_update()
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{
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/* flush TLB by ASID */
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if (_domain_id)
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Cpu::Tlbiasid::write(_domain_id);
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else
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Cpu::Tlbiall::write(0);
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}
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