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Prekernel: Use physical addresses for some of the BootInfo parameters

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The kernel would just turn those virtual addresses into physical
addresses later on, so let's just use physical addresses right from the
start.
This commit is contained in:
Gunnar Beutner 2021-07-19 18:24:15 +02:00 • committed by Andreas Kling
parent dd42093b93
commit be795d5812
6 changed files with 58 additions and 59 deletions
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19
Kernel/Prekernel/init.cpp
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@ -8,6 +8,7 @@
#include <AK/Types.h>
#include <Kernel/Multiboot.h>
#include <Kernel/PhysicalAddress.h>
#include <Kernel/Prekernel/Prekernel.h>
#include <Kernel/VirtualAddress.h>
#include <LibC/elf.h>
@ -138,20 +139,20 @@ extern "C" [[noreturn]] void init()
};
BootInfo info;
info.start_of_prekernel_image = adjust_by_load_base(start_of_prekernel_image);
info.end_of_prekernel_image = adjust_by_load_base(end_of_prekernel_image);
info.start_of_prekernel_image = (PhysicalPtr)start_of_prekernel_image;
info.end_of_prekernel_image = (PhysicalPtr)end_of_prekernel_image;
info.kernel_base = kernel_load_base;
info.multiboot_info_ptr = adjust_by_load_base(multiboot_info_ptr);
info.multiboot_info_ptr = (FlatPtr)adjust_by_load_base(multiboot_info_ptr);
#if ARCH(X86_64)
info.gdt64ptr = (FlatPtr)gdt64ptr;
info.gdt64ptr = (PhysicalPtr)gdt64ptr;
info.code64_sel = code64_sel;
info.boot_pml4t = (FlatPtr)adjust_by_load_base(boot_pml4t);
info.boot_pml4t = (PhysicalPtr)boot_pml4t;
#endif
info.boot_pdpt = (FlatPtr)adjust_by_load_base(boot_pdpt);
info.boot_pd0 = (FlatPtr)adjust_by_load_base(boot_pd0);
info.boot_pd_kernel = (FlatPtr)adjust_by_load_base(boot_pd_kernel);
info.boot_pdpt = (PhysicalPtr)boot_pdpt;
info.boot_pd0 = (PhysicalPtr)boot_pd0;
info.boot_pd_kernel = (PhysicalPtr)boot_pd_kernel;
info.boot_pd_kernel_pt1023 = (FlatPtr)adjust_by_load_base(boot_pd_kernel_pt1023);
info.kernel_cmdline = adjust_by_load_base(kernel_cmdline);
info.kernel_cmdline = (FlatPtr)adjust_by_load_base(kernel_cmdline);
asm(
#if ARCH(I386)