Some work in progress of the MTRR support. Shouldn't do any harm yet :-)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15525 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/debug/debug.c

@@ -439,6 +439,13 @@ debug_init_post_vm(kernel_args *args)
 }
 
 
+status_t
+debug_init_post_modules(struct kernel_args *args)
+{
+	return frame_buffer_console_init_post_modules(args);
+}
+
+
 //	#pragma mark - public API
 
 

src/system/kernel/debug/frame_buffer_console.cpp

@@ -7,6 +7,7 @@
 #include <kernel.h>
 #include <lock.h>
 #include <boot_item.h>
+#include <vm.h>
 #include <fs/devfs.h>
 #include <boot/kernel_args.h>
 
@@ -110,7 +111,7 @@ render_glyph(int32 x, int32 y, uint8 glyph, uint8 attr)
 			+ x * CHAR_WIDTH * sConsole.bytes_per_pixel);
 		uint8 *color = get_palette_entry(foreground_color(attr));
 		uint8 *backgroundColor = get_palette_entry(background_color(attr));
-	
+
 		for (y = 0; y < CHAR_HEIGHT; y++) {
 			uint8 bits = FONT[CHAR_HEIGHT * glyph + y];
 			for (x = 0; x < CHAR_WIDTH; x++) {
@@ -122,7 +123,7 @@ render_glyph(int32 x, int32 y, uint8 glyph, uint8 attr)
 				}
 				bits >>= 1;
 			}
-	
+
 			base += sConsole.bytes_per_row;
 		}
 	} else {
@@ -426,6 +427,19 @@ frame_buffer_console_init(kernel_args *args)
 }
 
 
+status_t
+frame_buffer_console_init_post_modules(kernel_args *args)
+{
+	if (sConsole.frame_buffer == NULL)
+		return B_OK;
+
+	// try to set frame buffer memory to write combined
+
+	return vm_set_area_memory_type(sConsole.area,
+		args->frame_buffer.physical_buffer.start, B_MTR_WC);
+}
+
+
 //	#pragma mark -