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[boot] Virtualize memory in the bootloader

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Finish updating the page tables, call UEFI's `set_virtual_address_map`
and jump to the kernel!
This commit is contained in:
Justin C. Miller
2020-05-21 23:49:49 -07:00
parent 6a538ad4f3
commit b491a09686
6 changed files with 89 additions and 74 deletions
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14
src/boot/memory.h
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@@ -81,9 +81,17 @@ struct efi_mem_map
};
/// Add the kernel's memory map as a module to the kernel args.
/// \returns The uefi memory map key for the version used to build
/// this map
size_t build_kernel_mem_map(kernel::args::header *args, uefi::boot_services *bs);
/// \returns The uefi memory map used to build the kernel map
efi_mem_map build_kernel_mem_map(kernel::args::header *args, uefi::boot_services *bs);
/// Activate the given memory mappings. Sets the given page tables live as well
/// as informs UEFI runtime services of the new mappings.
/// \arg pml4 The root page table for the new mappings
/// \arg map The UEFI memory map, used to update runtime services
void virtualize(
void *pml4,
efi_mem_map &map,
uefi::runtime_services *rs);
} // namespace boot
} // namespace memory