Add VGA text mode driver

Add driver to deal with VGA text mode.

Also adds a simple vprintl function while I don't implement a print
library.

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 25 insertions, 0 deletions

diff --git a/src/include/vga.h b/src/include/vga.h
new file mode 100644
index 0000000..7aaa210
--- /dev/null
+++ b/src/include/vga.h
@@ -0,0 +1,25 @@
+#ifndef VGA_H
+#define VGA_H
+#include <stddef.h>
+
+#define VGA_ADDRESS 0xb8000
+#define VGA_WIDTH 80
+#define VGA_HEIGHT 20
+
+struct vga_display {
+	uint16_t	*buf;
+	uint16_t	color;
+	size_t		row;
+	size_t		col;
+};
+
+extern struct vga_display display;
+
+void vga_put_char(size_t row, size_t col, char c, uint16_t color);
+void vga_write_char(char c);
+void vprintl(char *str);
+
+void init_display(uint16_t color);
+
+
+#endif /* VGA_H */