diff --git a/include/bl32/payloads/tlk.h b/include/bl32/payloads/tlk.h
index 6ce1eb6..d355313 100644
--- a/include/bl32/payloads/tlk.h
+++ b/include/bl32/payloads/tlk.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -31,6 +31,8 @@
 #ifndef __TLK_H__
 #define __TLK_H__
 
+#include <utils.h>
+
 /*
  * Generate function IDs for the Trusted OS/Apps
  */
@@ -51,13 +53,13 @@
  * SMC function IDs that TLK uses to signal various forms of completions
  * to the secure payload dispatcher.
  */
-#define TLK_REQUEST_DONE	(0x32000001 | (1 << 31))
-#define TLK_PREEMPTED		(0x32000002 | (1 << 31))
-#define TLK_ENTRY_DONE		(0x32000003 | (1 << 31))
-#define TLK_VA_TRANSLATE	(0x32000004 | (1 << 31))
-#define TLK_SUSPEND_DONE	(0x32000005 | (1 << 31))
-#define TLK_RESUME_DONE		(0x32000006 | (1 << 31))
-#define TLK_SYSTEM_OFF_DONE	(0x32000007 | (1 << 31))
+#define TLK_REQUEST_DONE	(0x32000001 | (ULL(1) << 31))
+#define TLK_PREEMPTED		(0x32000002 | (ULL(1) << 31))
+#define TLK_ENTRY_DONE		(0x32000003 | (ULL(1) << 31))
+#define TLK_VA_TRANSLATE	(0x32000004 | (ULL(1) << 31))
+#define TLK_SUSPEND_DONE	(0x32000005 | (ULL(1) << 31))
+#define TLK_RESUME_DONE		(0x32000006 | (ULL(1) << 31))
+#define TLK_SYSTEM_OFF_DONE	(0x32000007 | (ULL(1) << 31))
 
 /*
  * Trusted Application specific function IDs
diff --git a/include/lib/smcc.h b/include/lib/smcc.h
index c415ba1..2f562c5 100644
--- a/include/lib/smcc.h
+++ b/include/lib/smcc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -31,6 +31,8 @@
 #ifndef __SMCC_H__
 #define __SMCC_H__
 
+#include <utils.h>
+
 /*******************************************************************************
  * Bit definitions inside the function id as per the SMC calling convention
  ******************************************************************************/
@@ -57,7 +59,7 @@
 #define SMC_64				1
 #define SMC_32				0
 #define SMC_UNK				0xffffffff
-#define SMC_TYPE_FAST			1
+#define SMC_TYPE_FAST			ULL(1)
 #define SMC_TYPE_STD			0
 #define SMC_PREEMPTED		0xfffffffe
 /*******************************************************************************
diff --git a/include/lib/utils.h b/include/lib/utils.h
index f7af8f6..b6bc9af 100644
--- a/include/lib/utils.h
+++ b/include/lib/utils.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -66,4 +66,18 @@
 #define check_uptr_overflow(ptr, inc)		\
 	(((ptr) > UINTPTR_MAX - (inc)) ? 1 : 0)
 
+/*
+ * For those constants to be shared between C and other sources, apply a 'ull'
+ * suffix to the argument only in C, to avoid undefined or unintended behaviour.
+ *
+ * The GNU assembler and linker do not support the 'ull' suffix (it causes the
+ * build process to fail) therefore the suffix is omitted when used in linker
+ * scripts and assembler files.
+*/
+#if defined(__LINKER__) || defined(__ASSEMBLY__)
+# define ULL(_x)	(_x)
+#else
+# define ULL(_x)	(_x##ull)
+#endif
+
 #endif /* __UTILS_H__ */
diff --git a/include/plat/arm/board/common/board_css_def.h b/include/plat/arm/board/common/board_css_def.h
index 975f1fc..65e3d32 100644
--- a/include/plat/arm/board/common/board_css_def.h
+++ b/include/plat/arm/board/common/board_css_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -68,7 +68,7 @@
  * development platforms
  */
 
-#define PLAT_ARM_DRAM2_SIZE			MAKE_ULL(0x180000000)
+#define PLAT_ARM_DRAM2_SIZE			ULL(0x180000000)
 
 /* UART related constants */
 #define PLAT_ARM_BOOT_UART_BASE			SOC_CSS_UART0_BASE
diff --git a/include/plat/arm/common/arm_def.h b/include/plat/arm/common/arm_def.h
index 6d7bcd1..4d26444 100644
--- a/include/plat/arm/common/arm_def.h
+++ b/include/plat/arm/common/arm_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -89,7 +89,7 @@
  *   - SCP TZC DRAM: If present, DRAM reserved for SCP use
  *   - AP TZC DRAM: The remaining TZC secured DRAM reserved for AP use
  */
-#define ARM_TZC_DRAM1_SIZE		MAKE_ULL(0x01000000)
+#define ARM_TZC_DRAM1_SIZE		ULL(0x01000000)
 
 #define ARM_SCP_TZC_DRAM1_BASE		(ARM_DRAM1_BASE +		\
 					 ARM_DRAM1_SIZE -		\
@@ -113,12 +113,12 @@
 #define ARM_NS_DRAM1_END		(ARM_NS_DRAM1_BASE +		\
 					 ARM_NS_DRAM1_SIZE - 1)
 
-#define ARM_DRAM1_BASE			MAKE_ULL(0x80000000)
-#define ARM_DRAM1_SIZE			MAKE_ULL(0x80000000)
+#define ARM_DRAM1_BASE			ULL(0x80000000)
+#define ARM_DRAM1_SIZE			ULL(0x80000000)
 #define ARM_DRAM1_END			(ARM_DRAM1_BASE +		\
 					 ARM_DRAM1_SIZE - 1)
 
-#define ARM_DRAM2_BASE			MAKE_ULL(0x880000000)
+#define ARM_DRAM2_BASE			ULL(0x880000000)
 #define ARM_DRAM2_SIZE			PLAT_ARM_DRAM2_SIZE
 #define ARM_DRAM2_END			(ARM_DRAM2_BASE +		\
 					 ARM_DRAM2_SIZE - 1)
diff --git a/include/plat/arm/soc/common/soc_css_def.h b/include/plat/arm/soc/common/soc_css_def.h
index f1396a6..316f8f9 100644
--- a/include/plat/arm/soc/common/soc_css_def.h
+++ b/include/plat/arm/soc/common/soc_css_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -98,7 +98,7 @@
  */
 
 /* 2MB used for SCP DDR retraining */
-#define PLAT_ARM_SCP_TZC_DRAM1_SIZE	MAKE_ULL(0x00200000)
+#define PLAT_ARM_SCP_TZC_DRAM1_SIZE	ULL(0x00200000)
 
 
 #endif /* __SOC_CSS_DEF_H__ */
diff --git a/include/plat/common/common_def.h b/include/plat/common/common_def.h
index 65f31e7..05588c1 100644
--- a/include/plat/common/common_def.h
+++ b/include/plat/common/common_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -54,26 +54,6 @@
  */
 #define FIRMWARE_WELCOME_STR		"Booting Trusted Firmware\n"
 
-/*
- * Some of the platform porting definitions use the 'ull' suffix in order to
- * avoid subtle integer overflow errors due to implicit integer type promotion
- * when working with 32-bit values.
- *
- * The TSP linker script includes some of these definitions to define the BL32
- * memory map, but the GNU LD does not support the 'ull' suffix, causing the
- * build process to fail. To solve this problem, the auxiliary macro MAKE_ULL(x)
- * will add the 'ull' suffix only when the macro __LINKER__  is not defined
- * (__LINKER__ is defined in the command line to preprocess the linker script).
- * Constants in the linker script will not have the 'ull' suffix, but this is
- * not a problem since the linker evaluates all constant expressions to 64 bit
- * (assuming the target architecture is 64 bit).
- */
-#ifndef __LINKER__
-  #define MAKE_ULL(x)			x##ull
-#else
-  #define MAKE_ULL(x)			x
-#endif
-
 #if LOAD_IMAGE_V2
 #define BL2_IMAGE_DESC {				\
 	.image_id = BL2_IMAGE_ID,			\