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ladybird/Kernel/BootInfo.h

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Kernel: Move boot info declarations to a header file Instead of manually redeclaring those variables in various files this now adds a header file for them.
2021-07-19 15:54:51 +00:00
/*
* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
Prekernel: Use physical addresses for some of the BootInfo parameters The kernel would just turn those virtual addresses into physical addresses later on, so let's just use physical addresses right from the start.
2021-07-19 16:24:15 +00:00
#include <Kernel/Arch/x86/PageDirectory.h>
Prekernel: Export some multiboot parameters in our own BootInfo struct This allows us to specify virtual addresses for things the kernel should access via virtual addresses later on. By doing this we can make the kernel independent from specific physical addresses.
2021-07-26 13:09:36 +00:00
#include <Kernel/Multiboot.h>
Prekernel: Use physical addresses for some of the BootInfo parameters The kernel would just turn those virtual addresses into physical addresses later on, so let's just use physical addresses right from the start.
2021-07-19 16:24:15 +00:00
#include <Kernel/PhysicalAddress.h>
Kernel: Move boot info declarations to a header file Instead of manually redeclaring those variables in various files this now adds a header file for them.
2021-07-19 15:54:51 +00:00
#include <Kernel/VirtualAddress.h>
Prekernel: Use physical addresses for some of the BootInfo parameters The kernel would just turn those virtual addresses into physical addresses later on, so let's just use physical addresses right from the start.
2021-07-19 16:24:15 +00:00
extern "C" PhysicalAddress start_of_prekernel_image;
extern "C" PhysicalAddress end_of_prekernel_image;
Kernel: Make the kernel independent from specific physical addresses Previously the kernel relied on a fixed offset between virtual and physical addresses based on the kernel's load address. This allows us to specify an independent offset.
2021-07-22 11:05:04 +00:00
extern "C" size_t physical_to_virtual_offset;
Kernel: Support loading the kernel at almost arbitrary virtual addresses This enables further work on implementing KASLR by adding relocation support to the pre-kernel and updating the kernel to be less dependent on specific virtual memory layouts.
2021-07-26 13:10:51 +00:00
extern "C" FlatPtr kernel_mapping_base;
extern "C" FlatPtr kernel_load_base;
Kernel: Move boot info declarations to a header file Instead of manually redeclaring those variables in various files this now adds a header file for them.
2021-07-19 15:54:51 +00:00
#if ARCH(X86_64)
extern "C" u32 gdt64ptr;
extern "C" u16 code64_sel;
Prekernel: Use physical addresses for some of the BootInfo parameters The kernel would just turn those virtual addresses into physical addresses later on, so let's just use physical addresses right from the start.
2021-07-19 16:24:15 +00:00
extern "C" PhysicalAddress boot_pml4t;
Kernel: Move boot info declarations to a header file Instead of manually redeclaring those variables in various files this now adds a header file for them.
2021-07-19 15:54:51 +00:00
#endif
Prekernel: Use physical addresses for some of the BootInfo parameters The kernel would just turn those virtual addresses into physical addresses later on, so let's just use physical addresses right from the start.
2021-07-19 16:24:15 +00:00
extern "C" PhysicalAddress boot_pdpt;
extern "C" PhysicalAddress boot_pd0;
extern "C" PhysicalAddress boot_pd_kernel;
extern "C" Kernel::PageTableEntry* boot_pd_kernel_pt1023;
Kernel: Move boot info declarations to a header file Instead of manually redeclaring those variables in various files this now adds a header file for them.
2021-07-19 15:54:51 +00:00
extern "C" const char* kernel_cmdline;
Prekernel: Export some multiboot parameters in our own BootInfo struct This allows us to specify virtual addresses for things the kernel should access via virtual addresses later on. By doing this we can make the kernel independent from specific physical addresses.
2021-07-26 13:09:36 +00:00
extern "C" u32 multiboot_flags;
extern "C" multiboot_memory_map_t* multiboot_memory_map;
extern "C" size_t multiboot_memory_map_count;
extern "C" multiboot_module_entry_t* multiboot_modules;
extern "C" size_t multiboot_modules_count;
extern "C" PhysicalAddress multiboot_framebuffer_addr;
extern "C" u32 multiboot_framebuffer_pitch;
extern "C" u32 multiboot_framebuffer_width;
extern "C" u32 multiboot_framebuffer_height;
extern "C" u8 multiboot_framebuffer_bpp;
extern "C" u8 multiboot_framebuffer_type;
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