Parse ELF and load kernel, specify mem types

* Very bare-bones ELF parsing to load the kernel
* Custom memory type values for allocated memory

src/boot/loader.h

@@ -1,11 +1,16 @@
 #pragma once
 
-#include "kernel_args.h"
-
 namespace boot {
 namespace loader {
 
-kernel::entrypoint load_elf(const void *data, size_t size, uefi::boot_services *bs);
+struct loaded_elf
+{
+	void *data;
+	uintptr_t vaddr;
+	uintptr_t entrypoint;
+};
+
+loaded_elf load(const void *data, size_t size, uefi::boot_services *bs);
 
 } // namespace loader
 } // namespace boot