feat: add k_init function

k/k.c

@@ -27,6 +27,11 @@
 #include "stdio.h"
 #include "serial.h"
 
+static void k_init(void)
+{
+    init_serial();
+}
+
 void k_main(unsigned long magic, multiboot_info_t *info)
 {
     (void)magic;
@@ -35,8 +40,7 @@ void k_main(unsigned long magic, multiboot_info_t *info)
     char star[4] = "|/-\\";
     char *fb = (void *)0xb8000;
 
-    set_baud_rate();
-    init_serial();
+    k_init();
 
     printf("bonjour\r\n");
     for (unsigned i = 0; ; ) {

k/serial.c

@@ -3,7 +3,7 @@
 #include "serial.h"
 #include "io.h"
 
-void set_baud_rate(void)
+static void set_baud_rate(void)
 {
     u8 line_control_register = inb(COM1 + 3);
     outb(COM1 + 3, DLAB | line_control_register);
@@ -14,6 +14,8 @@ void set_baud_rate(void)
 
 void init_serial(void)
 {
+    set_baud_rate();
+
     outb(COM1 + 3, NO_PARITY | EIGHT_BITS_LENGTH);
     outb(COM1 + 2, FIFO | TRIGGER_LVL_14 | CLEAR_TRANSMIT_FIFO
             | CLEAR_RECEIVE_FIFO);

k/serial.h

@@ -20,7 +20,6 @@
 
 #define EMPTY_TRANSMITTER (0x1 << 5)
 
-void set_baud_rate(void);
 void init_serial(void);
 int write(const char *buf, size_t count);