Began work on tty driver

kernel/src/tty.c

@@ -0,0 +1,31 @@
+#include <kernel.h>
+#include <tty.h>
+
+struct {
+	size_t row;
+	size_t col;
+	uint8_t attr;
+	uint8_t* buf;
+} ctx;
+
+void tty_init(void) {
+	ctx.row = 0;
+	ctx.col = 0;
+	ctx.attr = 0x07;
+	ctx.buf = (u8*)VGA_MEMORY;
+
+	for (size_t y = 0; y < VGA_HEIGHT; y++) {
+		for (size_t x = 0; x < VGA_WIDTH; x++) {
+			size_t i = (y * VGA_WIDTH + x) * 2;
+			ctx.buf[i] = ' ';
+			ctx.buf[i + 1] = ctx.attr;
+		}
+	}
+}
+
+int tty_write(char* buf, size_t len) {}
+
+int tty_putc(char c) {}
+
+int tty_puts(char* s) {}
+