1 files changed, 48 insertions, 0 deletions
diff --git a/kernel/src/arch/x86_64/drivers/serial.cpp b/kernel/src/arch/x86_64/drivers/serial.cpp
new file mode 100644
index 0000000..bf1a954
--- /dev/null
+++ b/kernel/src/arch/x86_64/drivers/serial.cpp
@@ -0,0 +1,48 @@
+#include <arch/x86_64/drivers/io.hpp>
+#include <arch/x86_64/drivers/serial.hpp>
+
+#define PORT 0x3f8
+int is_success_init_serial = 0;
+
+void x86_64::serial::init() {
+    x86_64::io::outb(PORT + 1, 0x00);   
+    x86_64::io::outb(PORT + 3, 0x80);    
+    x86_64::io::outb(PORT + 0, 0x03);   
+    x86_64::io::outb(PORT + 1, 0x00);    
+    x86_64::io::outb(PORT + 3, 0x03); 
+    x86_64::io::outb(PORT + 2, 0xC7);   
+    x86_64::io::outb(PORT + 4, 0x0B);    
+    x86_64::io::outb(PORT + 4, 0x1E);    
+    x86_64::io::outb(PORT + 0, 0xAE);    
+
+    if(x86_64::io::inb(PORT + 0) != 0xAE) {
+        is_success_init_serial = 0;
+        return;
+    }
+
+    is_success_init_serial = 1;
+    x86_64::io::outb(PORT + 4, 0x0F);
+}
+
+int is_transmit_empty() {
+   return x86_64::io::inb(PORT + 5) & 0x20;
+}
+
+void x86_64::serial::write(char c) {
+    if(!is_success_init_serial)
+        return;
+    while (is_transmit_empty() == 0);
+    x86_64::io::outb(PORT,c);
+}
+
+int serial_received() {
+    return x86_64::io::inb(PORT + 5) & 1;
+}
+
+char x86_64::serial::read() {
+    if(!is_success_init_serial)
+        return 0;
+    while (serial_received() == 0);
+
+    return x86_64::io::inb(PORT);
+}