diff --git a/Kernel/Include/Arch/CPU.h b/Kernel/Include/Arch/CPU.h
index d142bc9..83e2710 100644
--- a/Kernel/Include/Arch/CPU.h
+++ b/Kernel/Include/Arch/CPU.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 
 static inline void CPUYield() {
     __asm__ volatile ("yield" ::: "memory");
diff --git a/Kernel/Include/Arch/DTB.h b/Kernel/Include/Arch/DTB.h
new file mode 100644
index 0000000..c73efa9
--- /dev/null
+++ b/Kernel/Include/Arch/DTB.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <Types.h>
+
+typedef struct FDTHeader {
+    UInt32 magic;                // 0xd00dfeed
+    UInt32 totalSize;
+    UInt32 offDtStruct;
+    UInt32 offDtStrings;
+    UInt32 offMemRsvMap;
+    UInt32 version;
+    UInt32 lastCompVersion;
+    UInt32 bootCpuidPhys;
+    UInt32 sizeDtStrings;
+    UInt32 sizeDtStruct;
+} FDTHeader;
+
+typedef struct FDTProperty {
+    UInt32 length;
+    UInt32 nameOffset;
+} FDTProperty;
+
+typedef enum FDTToken {
+    FDTTokenBeginNode = 0x1,
+    FDTTokenEndNode = 0x2,
+    FDTTokenProperty = 0x3,
+    FDTTokenNOP = 0x4,
+    FDTTokenEnd = 0x9,
+} FDTToken;
+
+enum {
+    kFDTHeaderMagic = 0xd00dfeed,
+};
+
+void DTBParse(Pointer dtb);
\ No newline at end of file
diff --git a/Kernel/Include/Arch/Exceptions.h b/Kernel/Include/Arch/Exceptions.h
index df48045..fe069c1 100644
--- a/Kernel/Include/Arch/Exceptions.h
+++ b/Kernel/Include/Arch/Exceptions.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 
 typedef struct ExceptionsContext {
     UInt64 x0;
diff --git a/Kernel/Include/Arch/IO.h b/Kernel/Include/Arch/IO.h
index 91f494b..980f76a 100644
--- a/Kernel/Include/Arch/IO.h
+++ b/Kernel/Include/Arch/IO.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 
 static inline void IOAddressWrite32(Address address, UInt32 value) {
     __asm__ volatile ("dsb sy" ::: "memory"); // wait till all previous writes are finished physically
diff --git a/Kernel/Include/IO/Serial.h b/Kernel/Include/IO/Serial.h
index f2d7787..f87d102 100644
--- a/Kernel/Include/IO/Serial.h
+++ b/Kernel/Include/IO/Serial.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 
 enum {
     kUARTBaseAddress = 0x09000000, // TODO: make it dynamic by parsing DTB
diff --git a/Kernel/Include/Lib/Align.h b/Kernel/Include/Lib/Align.h
new file mode 100644
index 0000000..7d86a1b
--- /dev/null
+++ b/Kernel/Include/Lib/Align.h
@@ -0,0 +1,19 @@
+#pragma once 
+
+#include <Types.h>
+
+static inline UInt64 AlignUp64(UInt64 value, UInt64 alignment) {
+    return (value + alignment - 1) & ~(alignment - 1);
+}
+
+static inline UInt64 AlignDown64(UInt64 value, UInt64 alignment) {
+    return value & ~(alignment - 1);
+}
+
+static inline UInt32 AlignUp32(UInt32 value, UInt32 alignment) {
+    return (value + alignment - 1) & ~(alignment - 1);
+}
+
+static inline UInt32 AlignDown32(UInt32 value, UInt32 alignment) {
+    return value & ~(alignment - 1);
+}
diff --git a/Kernel/Include/Lib/Bytes.h b/Kernel/Include/Lib/Bytes.h
new file mode 100644
index 0000000..852c199
--- /dev/null
+++ b/Kernel/Include/Lib/Bytes.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <Types.h>
+
+static inline UInt32 BytesSwap32(UInt32 value) {
+    return __builtin_bswap32(value);
+}
+
+static inline UInt64 BytesSwap64(UInt64 value) {
+    return __builtin_bswap64(value);
+}
diff --git a/Kernel/Include/Lib/String.h b/Kernel/Include/Lib/String.h
index 201334f..89572df 100644
--- a/Kernel/Include/Lib/String.h
+++ b/Kernel/Include/Lib/String.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 #include <Lib/VAArgs.h>
 
 void* StringSet(BytePointer destination, ASCII value, Size count);
diff --git a/Kernel/Include/OS/Log.h b/Kernel/Include/OS/Log.h
index 5b9d1d2..a19fcd6 100644
--- a/Kernel/Include/OS/Log.h
+++ b/Kernel/Include/OS/Log.h
@@ -1,5 +1,5 @@
 #pragma once
-#include <types.h>
+#include <Types.h>
 
 enum {
     kOSLogBufferSize = 1024,
diff --git a/Kernel/Include/OS/Panic.h b/Kernel/Include/OS/Panic.h
index 2eb3722..cb31981 100644
--- a/Kernel/Include/OS/Panic.h
+++ b/Kernel/Include/OS/Panic.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <types.h>
+#include <Types.h>
 #include <Arch/Exceptions.h>
 
 __attribute__((noreturn)) void OSPanicException(ExceptionsContext* frame);
diff --git a/Kernel/Include/types.h b/Kernel/Include/types.h
index 3e4261f..8f9a059 100644
--- a/Kernel/Include/types.h
+++ b/Kernel/Include/types.h
@@ -3,12 +3,19 @@
 
 #pragma once
 
+#if defined(NDEBUG) || defined(__OPTIMIZE__)
+    #define IS_RELEASE 1
+#else
+    #define IS_RELEASE 0
+#endif
+
 typedef unsigned char      UInt8;
 typedef unsigned short     UInt16;
 typedef unsigned int       UInt32;
 typedef unsigned long long UInt64; 
 typedef unsigned long long UInt;
 
+typedef void* Pointer;
 typedef UInt Address;
 typedef UInt8* BytePointer;
 typedef UInt8* MemoryPointer;