diff --git a/include/lib/el3_runtime/cpu_data.h b/include/lib/el3_runtime/cpu_data.h
index 1e8bfa7..c0c3a19 100644
--- a/include/lib/el3_runtime/cpu_data.h
+++ b/include/lib/el3_runtime/cpu_data.h
@@ -7,12 +7,15 @@
 #ifndef __CPU_DATA_H__
 #define __CPU_DATA_H__
 
+#include <platform_def.h>	/* CACHE_WRITEBACK_GRANULE required */
+
 #ifdef AARCH32
 
 #if CRASH_REPORTING
 #error "Crash reporting is not supported in AArch32"
 #endif
 #define CPU_DATA_CPU_OPS_PTR		0x0
+#define CPU_DATA_CRASH_BUF_OFFSET	0x4
 
 #else /* AARCH32 */
 
@@ -25,14 +28,18 @@
 #endif /* AARCH32 */
 
 #if CRASH_REPORTING
-#define CPU_DATA_LOG2SIZE		7
 #define CPU_DATA_CRASH_BUF_END		(CPU_DATA_CRASH_BUF_OFFSET + \
 						CPU_DATA_CRASH_BUF_SIZE)
 #else
-#define CPU_DATA_LOG2SIZE		6
 #define CPU_DATA_CRASH_BUF_END		CPU_DATA_CRASH_BUF_OFFSET
 #endif
 
+/* cpu_data size is the data size rounded up to the platform cache line size */
+#define CPU_DATA_SIZE			(((CPU_DATA_CRASH_BUF_END + \
+					CACHE_WRITEBACK_GRANULE - 1) / \
+						CACHE_WRITEBACK_GRANULE) * \
+							CACHE_WRITEBACK_GRANULE)
+
 #if ENABLE_RUNTIME_INSTRUMENTATION
 /* Temporary space to store PMF timestamps from assembly code */
 #define CPU_DATA_PMF_TS_COUNT		1
@@ -98,8 +105,8 @@
 	assert_cpu_data_crash_stack_offset_mismatch);
 #endif
 
-CASSERT((1 << CPU_DATA_LOG2SIZE) == sizeof(cpu_data_t),
-	assert_cpu_data_log2size_mismatch);
+CASSERT(CPU_DATA_SIZE == sizeof(cpu_data_t),
+		assert_cpu_data_size_mismatch);
 
 CASSERT(CPU_DATA_CPU_OPS_PTR == __builtin_offsetof
 		(cpu_data_t, cpu_ops_ptr),