ed52d5a211
Instead of holding SPEC-variable dependent files and directories inline within the repository structure, move them into 'spec' subdirectories at the corresponding levels, e.g.: repos/base/include/spec repos/base/mk/spec repos/base/lib/mk/spec repos/base/src/core/spec ... Moreover, this commit removes the 'platform' directories. That term was used in an overloaded sense. All SPEC-relative 'platform' directories are now named 'spec'. Other files, like for instance those related to the kernel/architecture specific startup library, where moved from 'platform' directories to explicit, more meaningful places like e.g.: 'src/lib/startup'. Fix #1673
60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
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* \brief Structure of the Bios Data Area after preparation through Bender
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* \author Martin Stein
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* \date 2015-07-10
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*/
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/*
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* Copyright (C) 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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#ifndef _INCLUDE__SPEC__X86__BIOS_DATA_AREA_H_
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#define _INCLUDE__SPEC__X86__BIOS_DATA_AREA_H_
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/* Genode includes */
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#include <util/mmio.h>
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/* base includes */
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#include <unmanaged_singleton.h>
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namespace Genode { class Bios_data_area; }
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class Genode::Bios_data_area : Mmio
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{
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friend Unmanaged_singleton_constructor;
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private:
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struct Serial_base_com1 : Register<0x400, 16> { };
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struct Equipment : Register<0x410, 16>
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{
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struct Serial_count : Bitfield<9, 3> { };
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};
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static addr_t _mmio_base_virt();
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Bios_data_area() : Mmio(_mmio_base_virt()) { }
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public:
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/**
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* Obtain I/O ports of COM interfaces from BDA
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*/
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addr_t serial_port() const
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{
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Equipment::access_t count = read<Equipment::Serial_count>();
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return count ? read<Serial_base_com1>() : 0;
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}
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/**
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* Return BDA singleton
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*/
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static Bios_data_area * singleton() {
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return unmanaged_singleton<Bios_data_area>(); }
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};
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#endif /* _INCLUDE__SPEC__X86__BIOS_DATA_AREA_H_ */
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