vgabios: Initial support for coreboot native vga vgabios.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/vgasrc/cbvga.h b/vgasrc/cbvga.h
new file mode 100644
index 0000000..fb892c8
--- /dev/null
+++ b/vgasrc/cbvga.h
@@ -0,0 +1,20 @@
+#ifndef __CBVGA_H
+#define __CBVGA_H
+
+#include "types.h" // u16
+
+struct vgamode_s *cbvga_find_mode(int mode);
+void cbvga_list_modes(u16 seg, u16 *dest, u16 *last);
+int cbvga_get_window(struct vgamode_s *vmode_g, int window);
+int cbvga_set_window(struct vgamode_s *vmode_g, int window, int val);
+int cbvga_get_linelength(struct vgamode_s *vmode_g);
+int cbvga_set_linelength(struct vgamode_s *vmode_g, int val);
+int cbvga_get_displaystart(struct vgamode_s *vmode_g);
+int cbvga_set_displaystart(struct vgamode_s *vmode_g, int val);
+int cbvga_get_dacformat(struct vgamode_s *vmode_g);
+int cbvga_set_dacformat(struct vgamode_s *vmode_g, int val);
+int cbvga_save_restore(int cmd, u16 seg, void *data);
+int cbvga_set_mode(struct vgamode_s *vmode_g, int flags);
+int cbvga_setup(void);
+
+#endif // cbvga.h