feat: GICv2 and timer

fix: TimerReset in GIC.c now uses kTimerFrequency

Kernel/Source/KernelMain.c

@@ -1,5 +1,8 @@
 #include "../Common/bootinfo.h"
 #include <Arch/DTB.h>
+#include <Arch/Timer.h>
+#include <Arch/CPU.h>
+#include <Arch/GIC.h>
 #include <VM/PMM.h>
 #include <VM/VMM.h>
 #include <VM/Heap.h>
@@ -15,9 +18,17 @@ void KernelMain(Bootinfo* bootinfo) {
     VMBootMemoryMap bootMap = {0};
     bootMap.reservedCount = 0;
     DTBParse(bootinfo->dtb, &bootMap);
+
     PMMInitialize(&bootMap);
     VMMInitialize(&bootMap, bootinfo);
     HeapInitialize();
 
+    GICInitialize(
+        (Pointer)VMPhysToHHDM(bootMap.GIC.GICD.base),
+        (Pointer)VMPhysToHHDM(bootMap.GIC.GICC.base)
+    );
+    TimerInitialize();
+    CPUEnableInterrupts();
+
     OSLog("Kernel initialized.\n");
-}
+}