[BOOT] Print functions for debugging

2016-07-29 23:07:29 +02:00
parent df86be2973
commit d149d4d20a
17 changed files with 450 additions and 31 deletions
--- a/kernel/drivers/serial.c
+++ b/kernel/drivers/serial.c
@@ -0,0 +1,23 @@
+#include <serial.h>
+#include <ports.h>
+
+
+void serial_init(uint16_t port)
+{
+  // Serial port initialization according to
+  // http://wiki.osdev.org/Serial_Ports
+  outb(port + 1, 0x00);
+  outb(port+ 3, 0x80);
+  outb(port+ 0, 0x03);
+  outb(port+ 1, 0x00);
+  outb(port+ 3, 0x03);
+  outb(port+ 2, 0xC7);
+  outb(port+ 4, 0x0B);
+}
+
+void serial_write(uint16_t port, uint8_t c)
+{
+  while(!(inb(port+ 5)&0x20));
+
+  outb(port, c);
+}