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/libc/kprintf.c

@@ -74,11 +74,22 @@ u32 vasprintf(char *buf, const char *fmt, va_list args) {
     return ptr;
 }
 
-void printf(const char *fmt, ...) {
+int printf(const char *fmt, ...) {
+    int result;
     char buf[1024] = {-1};
     va_list args;
     va_start(args, fmt);
-    vasprintf(buf, fmt, args);
+    result = vasprintf(buf, fmt, args);
     va_end(args);
     kprint(buf);
+    return result;
 }
+
+int sprintf(char* target, const char*fmt, ...) {
+    int result;
+    va_list args;
+    va_start(args, fmt);
+    result = vasprintf(target, fmt, args);
+    va_end(args);
+    return result;
+}

kernel/libc/kprintf.h

@@ -5,6 +5,8 @@
 #ifndef NEW_KERNEL_KPRINTF_H
 #define NEW_KERNEL_KPRINTF_H
 
-void printf(const char *fmt, ...);
+int printf(const char *fmt, ...);
+
+int sprintf(char *target, const char *fmt, ...);
 
 #endif //NEW_KERNEL_KPRINTF_H

kernel/libc/libc.c

@@ -5,9 +5,10 @@
  *      Author: rick
  */
 
+#include <types.h>
 #include "libc.h"
 
-int memcpy(char *dst, char *src, int amount) {
+int memcpy(u8 *dst, const u8 *src, int amount) {
     for (int i = 0; i < amount; i++) {
         dst[i] = src[i];
     }

kernel/libc/libc.h

@@ -8,7 +8,9 @@
 #ifndef KERNEL_LIBC_LIBC_H_
 #define KERNEL_LIBC_LIBC_H_
 
-int memcpy(char *dst, char *src, int amount);
+#include <types.h>
+
+int memcpy(u8 *dst, const u8 *src, int amount);
 
 int memset(char *dst, char data, int amount);