mirror of
https://github.com/SerenityOS/serenity
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4f8490b5ff
This commit reorganizes the BootInfo struct definition so it can be shared for all architectures. The existing free extern "C" boot info variables have been removed and replaced with a global BootInfo struct, 'g_boot_info'. On x86-64, the BootInfo is directly copied from the Prekernel-provided struct. On AArch64 and RISC-V, BootInfo is populated during pre_init.
100 lines
2.2 KiB
C++
100 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
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* Copyright (c) 2024, Sönke Holz <sholz8530@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#ifdef __cplusplus
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# include <Kernel/Boot/Multiboot.h>
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# include <Kernel/Memory/PhysicalAddress.h>
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# include <Kernel/Memory/VirtualAddress.h>
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# include <Kernel/Prekernel/Arch/ArchSpecificBootInfo.h>
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#endif
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#define MAX_KERNEL_SIZE 0x4000000
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#define KERNEL_PD_SIZE 0x31000000
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// FIXME: This should be using the define from Sections.h, but that currently is not possible
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// and causes linker errors, because Sections.h includes BootInfo.h.
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#define KERNEL_MAPPING_BASE 0x2000000000
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#ifdef __cplusplus
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extern "C" multiboot_info_t* multiboot_info_ptr;
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namespace Kernel {
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namespace Memory {
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class PageTableEntry;
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}
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struct Multiboot1BootInfo {
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u32 flags { 0 };
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multiboot_memory_map_t const* memory_map { 0 };
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u32 memory_map_count { 0 };
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PhysicalAddress module_physical_ptr { 0 };
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u32 module_length { 0 };
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PhysicalAddress start_of_prekernel_image { 0 };
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PhysicalAddress end_of_prekernel_image { 0 };
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PhysicalAddress boot_pd0 { 0 };
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};
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struct PreInitBootInfo {
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};
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enum class BootMethod {
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Multiboot1,
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PreInit,
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};
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enum class BootFramebufferType {
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None,
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BGRx8888,
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};
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struct BootFramebufferInfo {
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PhysicalAddress paddr { 0 };
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size_t pitch { 0 };
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size_t width { 0 };
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size_t height { 0 };
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u8 bpp { 0 };
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BootFramebufferType type { BootFramebufferType::None };
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};
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union BootMethodSpecificBootInfo {
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PreInitBootInfo pre_init {};
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Multiboot1BootInfo multiboot1;
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};
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struct BootInfo {
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ArchSpecificBootInfo arch_specific {};
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BootMethodSpecificBootInfo boot_method_specific {};
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BootMethod boot_method { BootMethod::PreInit };
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PhysicalAddress flattened_devicetree_paddr { 0 };
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size_t flattened_devicetree_size { 0 };
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size_t physical_to_virtual_offset { 0 };
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FlatPtr kernel_mapping_base { 0 };
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FlatPtr kernel_load_base { 0 };
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PhysicalAddress boot_pml4t { 0 };
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PhysicalAddress boot_pdpt { 0 };
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PhysicalAddress boot_pd_kernel { 0 };
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Memory::PageTableEntry* boot_pd_kernel_pt1023 { 0 };
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StringView cmdline;
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BootFramebufferInfo boot_framebuffer {};
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};
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}
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#endif
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