93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
/*
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* \brief Multiboot handling
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* \author Christian Helmuth
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* \author Alexander Boettcher
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* \date 2006-05-09
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*/
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/*
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* Copyright (C) 2006-2015 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 _CORE__INCLUDE__MULTIBOOT_H_
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#define _CORE__INCLUDE__MULTIBOOT_H_
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/* base includes */
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#include <util/mmio.h>
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/* core includes */
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#include <rom_fs.h>
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namespace Genode { class Multiboot_info; }
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class Genode::Multiboot_info : Mmio
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{
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private:
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struct Flags : Register<0x00, 32> {
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struct Mem_map : Bitfield<6, 1> { };
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};
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struct Mods_count : Register<0x14, 32> { };
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struct Mods_addr : Register<0x18, 32> { };
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struct Mmap_length: Register<0x2c, 32> { };
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struct Mmap_addr : Register<0x30, 32> { };
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public:
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Multiboot_info(addr_t mbi) : Mmio(mbi) { }
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Multiboot_info(addr_t mbi, bool strip);
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struct Mmap : Genode::Mmio {
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struct Size : Register <0x00, 32> { };
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struct Addr : Register <0x04, 64> { };
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struct Length : Register <0x0c, 64> { };
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struct Type : Register <0x14, 8> {
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struct Memory : Bitfield<0, 1> { };
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struct Reserved : Bitfield<1, 1> { };
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};
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Mmap(addr_t mmap = 0) : Mmio(mmap) { }
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};
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struct Mods : Genode::Mmio {
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struct Start : Register <0x00, 32> { };
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struct End : Register <0x04, 32> { };
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struct Cmdline : Register <0x08, 32> { };
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struct Padding : Register <0x0c, 32> { };
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Mods(addr_t mods) : Mmio(mods) { }
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};
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private:
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Mods _get_mod(unsigned i) {
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Genode::addr_t mods_addr = read<Mods_addr>();
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enum { MODS_SIZE_OF = 16 };
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return Mods(mods_addr + i * MODS_SIZE_OF);
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}
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public:
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/**
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* Number of boot modules
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*/
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unsigned num_modules();
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/* Accessors */
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size_t size() const { return 0x1000; }
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/**
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* Use boot module num
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*
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* The module is marked as invalid in MBI and cannot be gotten again
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*/
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Rom_module get_module(unsigned num);
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};
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#endif /* _CORE__INCLUDE__MULTIBOOT_H_ */
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