KERNEL: Implementing VMM & cleaning up

Folders now are alll lower case

Started working on the implementation of the Virtual memory manager. Implemented allocate and free page funtionality for as far as I can atm.

Implemented the

source/kernel/drivers/ps-2/keyboard.cpp

@@ -0,0 +1,51 @@
+#include "keyboard.h"
+
+KeyPressInfo keyPress {};
+
+void KeyHandled(){
+    keyPress.ScanCode= 0x00;
+    keyPress.PressedModifiers = 0x00;
+}
+
+
+char getASCIIKey(){
+    char keyPressed;
+    // Wait until a key is pressed  
+    while(keyPress.ScanCode == 0x00) {
+        asm volatile ("NOP");
+    }
+
+    
+    // Translate keycode to ascii 
+    // Probably a lookup table might be handy 
+    // Until 0x37
+     const char* ASCIILookUp =
+      "\01234567890-=\0\0QWERTYUIOP[]\0\0ASDFGHJKL;\'`\0\\ZXCVBNM,./\0"; 
+     
+     uint8_t ASCII_Index = keyPress.ScanCode - 3  ;
+     //printf("ASCII_INDEX: %x\n", ASCII_Index);
+     keyPressed = ASCIILookUp[ASCII_Index];
+
+    KeyHandled();
+
+    return keyPressed;
+}
+
+
+
+uint8_t getKey(){
+    // Wait until a key is pressed 
+    while(keyPress.ScanCode == 0x00){
+        asm volatile ("NOP");
+    }
+    
+    if( keyPress.ScanCode > 0x37){
+        keyPress.ScanCode = 0x00;
+        return 0;
+    }
+
+    uint8_t ScanCode = keyPress.ScanCode;
+   // KeyHandled();
+
+    return  ScanCode ;
+}

source/kernel/drivers/ps-2/keyboard.h

@@ -0,0 +1,34 @@
+#pragma once
+#include <stdint.h>
+#include "../../terminal/kterm.h"
+enum ScanCodeSet {
+    None            =   0,
+    ScanCodeSet1    =   1,
+    ScanCodeSet2    =   2,
+    ScanCodeSet3    =   3,
+};
+
+enum Modifiers {
+    LSHIFT  =   1,
+    RSHIFT  =   2,
+
+    LCTRL   =   3,
+    RCTRL   =   4,
+
+    LALT    =   5,
+    RALT    =   6
+};
+
+struct KeyPressInfo{ 
+    uint8_t PressedModifiers;
+    uint8_t ScanCode;
+};
+
+
+
+extern KeyPressInfo keyPress;
+
+void KeyHandled();
+
+char getASCIIKey();
+uint8_t getKey();