feat: setup structure for block devices

added ide block device
added mbr block device driver
started fat block device driver

reordered boot
start timer before pci/ide/etc.
enable interrupts earlier

fixed exception from ide controller

cleanup code
more printfs

kernel/drivers/keyboard.c

@@ -3,10 +3,8 @@
 //
 #include "keyboard.h"
 
-#include <kprint.h>
 #include <drivers/ports.h>
 #include <cpu/isr.h>
-#include <libc/libc.h>
 #include <libc/stdbool.h>
 #include <libc/ringqueue.h>
 #include <mem/mem.h>
@@ -27,28 +25,6 @@ const char scancode_map_uppercase[] = {
         0, 0, 0, 0, 0, 0, 0, 0
 };
 
-//
-//char scancodes_ascii[] = {
-//        0, 0,
-//        '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0,
-//        0, 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', 0,
-//        0, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`',
-//        0, '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 0,
-//        '*',
-//        0, ' ',
-//        0,
-//        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // F1-F10
-//        0, 0,
-//        '7', '8', '9', '-',
-//        '4', '5', '6', '+',
-//        '1', '2', '3',
-//        '0', 0,
-//        0, // sysrq
-//        0, 0, // weird
-//        0, 0, // F11 F12
-//        // weid
-//};
-
 struct {
     u8 shift: 1;
     u8 ctrl: 1;
@@ -58,11 +34,9 @@ struct {
 
 void *keyboard_event_buffer = NULL;
 
-char *MSG_KEY = "Clicked on key 'x'\n";
-
 char getc() {
     while (true) {
-        KeyEvent* event = get_next_event();
+        KeyEvent *event = get_next_event();
         char retval = 0;
         if (event == NULL) {
             goto _getc_end;
@@ -154,7 +128,6 @@ static void keyboard_callback(registers_t regs) {
     }
     unsigned char scancode = port_byte_in(PORT_PS2_DATA);
     publish_key_event(scancode);
-//    print_scancode(scancode);
 }
 
 void init_keyboard() {
@@ -165,25 +138,3 @@ void init_keyboard() {
     keyboard_state.extended = 0;
     keyboard_event_buffer = create_buffer(256, sizeof(KeyEvent));
 }
-
-//void print_scancode(unsigned char scancode) {
-//    char msg[256];
-//    char release = 0;
-//    if (scancode > 0x80) {
-//        // release
-//        release = 1;
-//        scancode -= 0x80;
-//    }
-//    char code = scancodes_ascii[scancode];
-//    if (code == 0) {
-//        // special
-//    } else {
-//        if (release && code > 0x60 && code < 0x7B) {
-//            code -= 0x20; // to lowercase
-//        }
-//
-//        strcpy(msg, MSG_KEY);
-//        msg[strlen(msg) - 3] = code;
-//        kprint(msg);
-//    }
-//}