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Kernel: Start using multiboot2 instead of multiboot

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This allows better compatibility with (U)EFI and gives RSDP location
instead of me having to scan ram to find it.
This commit is contained in:
Bananymous
2023-10-17 01:06:24 +03:00
parent 19696bdad3
commit 69a39b7077
10 changed files with 185 additions and 153 deletions
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11
kernel/arch/x86_64/PageTable.cpp
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@@ -4,6 +4,7 @@
#include <kernel/LockGuard.h>
#include <kernel/Memory/kmalloc.h>
#include <kernel/Memory/PageTable.h>
#include <kernel/multiboot2.h>
extern uint8_t g_kernel_start[];
extern uint8_t g_kernel_end[];
@@ -138,6 +139,16 @@ namespace Kernel
// Map (0 -> phys_kernel_end) to (KERNEL_OFFSET -> virt_kernel_end)
map_range_at(0, KERNEL_OFFSET, (uintptr_t)g_kernel_end - KERNEL_OFFSET, Flags::ReadWrite | Flags::Present);
// Map multiboot info
vaddr_t multiboot_data_start = (vaddr_t)g_multiboot2_info & PAGE_ADDR_MASK;
vaddr_t multiboot_data_end = (vaddr_t)g_multiboot2_info + g_multiboot2_info->total_size;
map_range_at(
V2P(multiboot_data_start),
multiboot_data_start,
multiboot_data_end - multiboot_data_start,
Flags::ReadWrite | Flags::Present
);
// Map executable kernel memory as executable
map_range_at(
V2P(g_kernel_execute_start),