50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
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* \brief Programmable interrupt controller for core
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* \author Stefan Kalkowski
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* \date 2012-10-24
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*/
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/*
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* Copyright (C) 2012-2013 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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#include <spec/arm/pic.h>
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#include <platform.h>
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using Bootstrap::Platform;
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void Bootstrap::Pic::init_cpu_local()
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{
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/* disable the priority filter */
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_cpui.write<Cpu_interface::Pmr::Priority>(_distr.min_priority());
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/* disable preemption of IRQ handling by other IRQs */
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_cpui.write<Cpu_interface::Bpr::Binary_point>(~0);
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/* enable device */
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_cpui.write<Cpu_interface::Ctlr::Enable>(1);
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}
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Hw::Pic::Pic()
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: _distr(Board::Cpu_mmio::IRQ_CONTROLLER_DISTR_BASE),
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_cpui (Board::Cpu_mmio::IRQ_CONTROLLER_CPU_BASE),
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_last_iar(Cpu_interface::Iar::Irq_id::bits(spurious_id)),
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_max_irq(_distr.max_irq())
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{
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/* disable device */
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_distr.write<Distributor::Ctlr::Enable>(0);
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/* configure every shared peripheral interrupt */
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for (unsigned i = min_spi; i <= _max_irq; i++) {
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_distr.write<Distributor::Icfgr::Edge_triggered>(0, i);
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_distr.write<Distributor::Ipriorityr::Priority>(0, i);
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_distr.write<Distributor::Icenabler::Clear_enable>(1, i);
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}
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/* enable device */
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_distr.write<Distributor::Ctlr::Enable>(1);
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}
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