Enrico Fraccaroli (Galfurian)
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/// @file boot.h
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/// @brief Bootloader structures
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/// @copyright (c) 2014-2022 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#pragma once
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#include "multiboot.h"
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/// @brief Mentos structure to communicate bootloader info to the kernel
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typedef struct boot_info_t {
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/// Boot magic number.
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unsigned int magic;
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/*
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* Bootloader physical range
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* it can be overwritten to do other things
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* */
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/// bootloader code start
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unsigned int bootloader_phy_start;
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/// bootloader code end
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unsigned int bootloader_phy_end;
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/*
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* Kernel virtual and physical range
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* must not be overwritten
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* it's assumed to be contiguous, so section holes are just wasted space
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* */
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/// kernel physical code start
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unsigned int kernel_phy_start;
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/// kernel physical code end
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unsigned int kernel_phy_end;
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/// kernel code start
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unsigned int kernel_start;
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/// kernel code end
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unsigned int kernel_end;
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/// kernel size.
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unsigned int kernel_size;
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/// Address after the modules.
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unsigned int module_end;
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/*
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* Range of addressable lowmemory, is memory that is available
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* (not used by the kernel executable nor by the bootloader)
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* and can be accessed by the kernel at any time
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* */
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/// lowmem physical addressable start
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unsigned int lowmem_phy_start;
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/// lowmem physical addressable end
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unsigned int lowmem_phy_end;
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/// lowmem addressable start
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unsigned int lowmem_start;
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/// lowmem addressable end
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unsigned int lowmem_end;
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/// stack end (comes after lowmem_end, and is the end of the low mapped memory)
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unsigned int stack_end;
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/*
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* Range of non-addressable highmemory, is memory that can be
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* accessed by the kernel only if previously mapped
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* */
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/// highmem addressable start
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unsigned int highmem_phy_start;
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/// highmem addressable end
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unsigned int highmem_phy_end;
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/// multiboot info
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multiboot_info_t *multiboot_header;
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/// stack suggested start address (also set by the bootloader)
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unsigned int stack_base;
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} boot_info_t;
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