[build] Copy uefi headers into project

Eventually the UEFI headers should be brought in from their own project,
but for now, like the other projects under external/, these are being
copied into this repository.

Tags: boot uefi

external/uefi/protos/loaded_image.h

@@ -0,0 +1,48 @@
+#pragma once
+#ifndef _uefi_protos_loaded_image_h_
+#define _uefi_protos_loaded_image_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+#include <uefi/tables.h>
+#include <uefi/protos/device_path.h>
+
+namespace uefi {
+namespace protos {
+struct loaded_image;
+
+struct loaded_image
+{
+    static constexpr uefi::guid guid{ 0x5b1b31a1,0x9562,0x11d2,{0x8e,0x3f,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    inline uefi::status unload(uefi::handle image_handle) {
+        return _unload(image_handle);
+    }
+
+    uint32_t revision;
+    uefi::handle parent_handle;
+    uefi::system_table * system_table;
+    uefi::handle device_handle;
+    uefi::protos::device_path * file_path;
+    void * reserved;
+    uint32_t load_options_size;
+    void * load_options;
+    void * image_base;
+    uint64_t image_size;
+    uefi::memory_type image_code_type;
+    uefi::memory_type image_data_type;
+
+protected:
+    using _unload_def = uefi::status (*)(uefi::handle);
+    _unload_def _unload;
+
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_loaded_image_h_