59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
/*
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* \brief Platform implementations specific for x86
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* \author Norman Feske
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* \author Reto Buerki
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* \date 2013-04-05
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*/
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/*
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* Copyright (C) 2013-2015 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 <platform.h>
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#include <board.h>
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#include <cpu.h>
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using namespace Genode;
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void Platform::_init_io_port_alloc()
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{
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_io_port_alloc.add_range(0, 0x10000);
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}
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/**
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* Remove given exclude memory regions from specified allocator.
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*/
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static void alloc_exclude_regions(Range_allocator * const alloc,
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Region_pool excl_regions)
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{
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Native_region * r = excl_regions(0);
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for (unsigned i = 0; r; r = excl_regions(++i))
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alloc->remove_range(r->base, r->size);
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}
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void Platform::_init_io_mem_alloc()
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{
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/* add entire adress space minus the RAM memory regions */
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_io_mem_alloc.add_range(0, ~0x0UL);
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alloc_exclude_regions(&_io_mem_alloc, _ram_regions);
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alloc_exclude_regions(&_io_mem_alloc, _core_only_ram_regions);
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alloc_exclude_regions(&_io_mem_alloc, _core_only_mmio_regions);
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/* exclude all mmio regions from virt allocator of core */
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alloc_exclude_regions(_core_mem_alloc.virt_alloc(), _core_only_mmio_regions);
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}
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long Platform::irq(long const user_irq)
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{
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/* remap IRQ requests to fit I/O APIC configuration */
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if (user_irq) return user_irq + Board::VECTOR_REMAP_BASE;
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return Board::TIMER_VECTOR_USER;
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}
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