diff --git a/tlsf.c b/tlsf.c
index 4f1dfdb..0287520 100644
--- a/tlsf.c
+++ b/tlsf.c
@@ -199,59 +199,6 @@ tlsf_decl int tlsf_fls_sizet(size_t size)
 
 #undef tlsf_decl
 
-/*
-** Constants.
-*/
-
-/* Public constants: may be modified. */
-enum tlsf_public
-{
-	/* log2 of number of linear subdivisions of block sizes. Larger
-	** values require more memory in the control structure. Values of
-	** 4 or 5 are typical.
-	*/
-	SL_INDEX_COUNT_LOG2 = 5,
-};
-
-/* Private constants: do not modify. */
-enum tlsf_private
-{
-#if defined (TLSF_64BIT)
-	/* All allocation sizes and addresses are aligned to 8 bytes. */
-	ALIGN_SIZE_LOG2 = 3,
-#else
-	/* All allocation sizes and addresses are aligned to 4 bytes. */
-	ALIGN_SIZE_LOG2 = 2,
-#endif
-	ALIGN_SIZE = (1 << ALIGN_SIZE_LOG2),
-
-	/*
-	** We support allocations of sizes up to (1 << FL_INDEX_MAX) bits.
-	** However, because we linearly subdivide the second-level lists, and
-	** our minimum size granularity is 4 bytes, it doesn't make sense to
-	** create first-level lists for sizes smaller than SL_INDEX_COUNT * 4,
-	** or (1 << (SL_INDEX_COUNT_LOG2 + 2)) bytes, as there we will be
-	** trying to split size ranges into more slots than we have available.
-	** Instead, we calculate the minimum threshold size, and place all
-	** blocks below that size into the 0th first-level list.
-	*/
-
-#if defined (TLSF_64BIT)
-	/*
-	** TODO: We can increase this to support larger sizes, at the expense
-	** of more overhead in the TLSF structure.
-	*/
-	FL_INDEX_MAX = 32,
-#else
-	FL_INDEX_MAX = 30,
-#endif
-	SL_INDEX_COUNT = (1 << SL_INDEX_COUNT_LOG2),
-	FL_INDEX_SHIFT = (SL_INDEX_COUNT_LOG2 + ALIGN_SIZE_LOG2),
-	FL_INDEX_COUNT = (FL_INDEX_MAX - FL_INDEX_SHIFT + 1),
-
-	SMALL_BLOCK_SIZE = (1 << FL_INDEX_SHIFT),
-};
-
 /*
 ** Cast and min/max macros.
 */
diff --git a/tlsf_common.h b/tlsf_common.h
index 5fa29fd..cbd8972 100644
--- a/tlsf_common.h
+++ b/tlsf_common.h
@@ -6,10 +6,53 @@
 
 #pragma once
 
+#if defined __has_include && __has_include("tlsf_platform.h")
+#include "tlsf_platform.h"
+#endif
+
 #if defined(__cplusplus)
 extern "C" {
 #endif
 
+enum tlsf_config
+{
+	/* log2 of number of linear subdivisions of block sizes. Larger
+	** values require more memory in the control structure. Values of
+	** 4 or 5 are typical.
+	*/
+	SL_INDEX_COUNT_LOG2  = 5,
+
+	/* All allocation sizes and addresses are aligned to 4 bytes. */
+	ALIGN_SIZE_LOG2 = 2,
+	ALIGN_SIZE = (1 << ALIGN_SIZE_LOG2),
+
+	/*
+	** We support allocations of sizes up to (1 << FL_INDEX_MAX) bits.
+	** However, because we linearly subdivide the second-level lists, and
+	** our minimum size granularity is 4 bytes, it doesn't make sense to
+	** create first-level lists for sizes smaller than SL_INDEX_COUNT * 4,
+	** or (1 << (SL_INDEX_COUNT_LOG2 + 2)) bytes, as there we will be
+	** trying to split size ranges into more slots than we have available.
+	** Instead, we calculate the minimum threshold size, and place all
+	** blocks below that size into the 0th first-level list.
+	*/
+
+	/* Tunning the first level, we can reduce TLSF pool overhead
+	 * in exchange of manage a pool smaller than 4GB
+	 */
+	#ifdef FL_INDEX_MAX_PLATFORM
+	FL_INDEX_MAX = FL_INDEX_MAX_PLATFORM,
+	#else
+	FL_INDEX_MAX = 30,
+	#endif
+
+	SL_INDEX_COUNT = (1 << SL_INDEX_COUNT_LOG2),
+	FL_INDEX_SHIFT = (SL_INDEX_COUNT_LOG2 + ALIGN_SIZE_LOG2),
+	FL_INDEX_COUNT = (FL_INDEX_MAX - FL_INDEX_SHIFT + 1),
+
+	SMALL_BLOCK_SIZE = (1 << FL_INDEX_SHIFT),
+};
+
 #if defined(__cplusplus)
 };
 #endif