61 lines
1.5 KiB
C++
61 lines
1.5 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 General Public License version 2.
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*/
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/* core includes */
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#include <pic.h>
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using namespace Genode;
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void Pic::_init()
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{
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/* disable device */
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_distr.write<Distr::Ctlr>(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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/* mark as non-secure */
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_distr.write<Distr::Igroupr::Group_status>(1, i);
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_distr.write<Distr::Icfgr::Edge_triggered>(0, i);
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_distr.write<Distr::Ipriorityr::Priority>(0, i);
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_distr.write<Distr::Icenabler::Clear_enable>(1, i);
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}
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/* enable device */
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Distr::Ctlr::access_t v = 0;
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Distr::Ctlr::Enable_grp0::set(v, 1);
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Distr::Ctlr::Enable_grp1::set(v, 1);
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_distr.write<Distr::Ctlr>(v);
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}
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void Pic::init_cpu_local()
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{
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_cpui.write<Cpui::Ctlr>(0);
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/* mark software-generated IRQs as being non-secure */
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for (unsigned i = 0; i < min_spi; i++)
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_distr.write<Distr::Igroupr::Group_status>(1, i);
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/* disable the priority filter */
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_cpui.write<Cpui::Pmr::Priority>(_distr.min_priority());
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/* disable preemption of IRQ handling by other IRQs */
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_cpui.write<Cpui::Bpr::Binary_point>(~0);
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/* enable device */
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Cpui::Ctlr::access_t v = 0;
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Cpui::Ctlr::Enable_grp0::set(v, 1);
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Cpui::Ctlr::Enable_grp1::set(v, 1);
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Cpui::Ctlr::Fiq_en::set(v, 1);
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_cpui.write<Cpui::Ctlr>(v);
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}
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