4 files changed, 12 insertions, 0 deletions
diff --git a/src/kernel/arch/i386/tty/serial.c b/src/kernel/arch/i386/tty/serial.c
index 6ddc05b..2b89ecf 100644
--- a/src/kernel/arch/i386/tty/serial.c
+++ b/src/kernel/arch/i386/tty/serial.c
@@ -35,6 +35,11 @@ static void serial_putchar(char c) {
 	port_outb(COM1, c);
 }
 
+char serial_read(void) {
+	while ((port_inb(COM1 + 5) & 0x01) == 0); // wait for DR
+	return port_inb(COM1);
+}
+
 void serial_write(const char *buf, size_t len) {
 	for (size_t i = 0; i < len; i++)
 		serial_putchar(buf[i]);
diff --git a/src/kernel/arch/i386/tty/serial.h b/src/kernel/arch/i386/tty/serial.h
index 2332113..751e528 100644
--- a/src/kernel/arch/i386/tty/serial.h
+++ b/src/kernel/arch/i386/tty/serial.h
@@ -1,5 +1,6 @@
 #pragma once
 #include <stddef.h>
 
+char serial_read(void);
 void serial_write(const char *buf, size_t len);
 void serial_init(void);
diff --git a/src/kernel/arch/i386/tty/tty.c b/src/kernel/arch/i386/tty/tty.c
index bae65c5..5a65221 100644
--- a/src/kernel/arch/i386/tty/tty.c
+++ b/src/kernel/arch/i386/tty/tty.c
@@ -11,6 +11,11 @@ void tty_init(void) {
 	serial_write("<3 ", 3);
 }
 
+void tty_read(char *buf, size_t len) {
+	for (size_t i = 0; i < len; i++)
+		buf[i] = serial_read();
+}
+
 void tty_write(const char *buf, size_t len) {
 	vga_write(buf, len);
 	serial_write(buf, len);
diff --git a/src/kernel/arch/io.h b/src/kernel/arch/io.h
index ef8cb17..acba67a 100644
--- a/src/kernel/arch/io.h
+++ b/src/kernel/arch/io.h
@@ -2,6 +2,7 @@
 #include <stddef.h>
 
 void tty_init(void);
+void tty_read(char *buf, size_t len);
 void tty_write(const char *buf, size_t len);
 
 static inline void _tty_hex(const char *buf, size_t len) {