layout: Add MMIO memory attribute

Signed-off-by: Akira Moroo <retrage01@gmail.com>

Author: retrage

src/efi/mod.rs

@@ -976,6 +976,7 @@ fn populate_allocator(info: &dyn bootinfo::Info, image_address: u64, image_size:
             layout::MemoryAttribute::Code => efi::RUNTIME_SERVICES_CODE,
             layout::MemoryAttribute::Data => efi::RUNTIME_SERVICES_DATA,
             layout::MemoryAttribute::Unusable => efi::UNUSABLE_MEMORY,
+            layout::MemoryAttribute::Mmio => efi::MEMORY_MAPPED_IO,
         };
         ALLOCATOR.borrow_mut().allocate_pages(
             efi::ALLOCATE_ADDRESS,

src/layout.rs

@@ -3,12 +3,13 @@
 
 use core::ops::Range;
 
+#[allow(dead_code)]
 #[derive(Clone, Copy)]
 pub enum MemoryAttribute {
     Code,
     Data,
-    #[allow(dead_code)]
     Unusable,
+    Mmio,
 }
 
 #[derive(Clone, Copy)]