EFI READ MEMORY MAP

Brick-OS-PokeyManatee4 · Mar 9, 2022 · 61f25d1 · 61f25d1
1 parent 43c78bb
commit 61f25d1
Showing 1 changed file with 17 additions and 1 deletion.
diff --git a/kernel/src/kernel.cpp b/kernel/src/kernel.cpp
@@ -14,7 +14,23 @@ struct BootInfo {
 
 extern "C" void _start(BootInfo* bootInfo){
 
-    BasicRenderer newRenderer = BasicRenderer(bootInfo->framebuffer, bootInfo->psf1_Font); 
+    BasicRenderer newRenderer = BasicRenderer(bootInfo->framebuffer, bootInfo->psf1_Font);
+
     newRenderer.Print("© 2022 The Brick OS Team");
+
+
+    uint64_t mMapEntries = bootInfo->mMapSize / bootInfo->mMapDescSize;
+
+        for (int i = 0; i < mMapEntries; i++){
+        EFI_MEMORY_DESCRIPTOR* desc = (EFI_MEMORY_DESCRIPTOR*)((uint64_t)bootInfo->mMap + (i * bootInfo->mMapDescSize));
+        newRenderer.CursorPosition = {0, newRenderer.CursorPosition.Y + 16};
+        newRenderer.Print(EFI_MEMORY_TYPE_STRINGS[desc->type]);
+        newRenderer.Colour = 0xffff00ff;
+        newRenderer.Print(" ");
+        newRenderer.Print(to_string(desc->numPages * 4096 / 1024));
+        newRenderer.Print(" KB");
+        newRenderer.Colour = 0xffffffff;
+    }
+
     return ;
 }