diff --git a/include/common/ep_info.h b/include/common/ep_info.h
new file mode 100644
index 0000000..3613614
--- /dev/null
+++ b/include/common/ep_info.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 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:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __EP_INFO_H__
+#define __EP_INFO_H__
+
+#include <param_header.h>
+
+#define SECURE		0x0
+#define NON_SECURE	0x1
+#define sec_state_is_valid(s) (((s) == SECURE) || ((s) == NON_SECURE))
+
+/*******************************************************************************
+ * Constants that allow assembler code to access members of and the
+ * 'entry_point_info' structure at their correct offsets.
+ ******************************************************************************/
+#define ENTRY_POINT_INFO_PC_OFFSET	0x08
+#ifdef AARCH32
+#define ENTRY_POINT_INFO_ARGS_OFFSET	0x10
+#else
+#define ENTRY_POINT_INFO_ARGS_OFFSET	0x18
+#endif
+
+/* The following are used to set/get image attributes. */
+#define PARAM_EP_SECURITY_MASK		(0x1)
+
+#define GET_SECURITY_STATE(x) (x & PARAM_EP_SECURITY_MASK)
+#define SET_SECURITY_STATE(x, security) \
+			((x) = ((x) & ~PARAM_EP_SECURITY_MASK) | (security))
+
+#define EP_EE_MASK	0x2
+#define EP_EE_LITTLE	0x0
+#define EP_EE_BIG	0x2
+#define EP_GET_EE(x) (x & EP_EE_MASK)
+#define EP_SET_EE(x, ee) ((x) = ((x) & ~EP_EE_MASK) | (ee))
+
+#define EP_ST_MASK	0x4
+#define EP_ST_DISABLE	0x0
+#define EP_ST_ENABLE	0x4
+#define EP_GET_ST(x) (x & EP_ST_MASK)
+#define EP_SET_ST(x, ee) ((x) = ((x) & ~EP_ST_MASK) | (ee))
+
+#define EP_EXE_MASK	0x8
+#define NON_EXECUTABLE	0x0
+#define EXECUTABLE	0x8
+#define EP_GET_EXE(x) (x & EP_EXE_MASK)
+#define EP_SET_EXE(x, ee) ((x) = ((x) & ~EP_EXE_MASK) | (ee))
+
+#define EP_FIRST_EXE_MASK	0x10
+#define EP_FIRST_EXE		0x10
+#define EP_GET_FIRST_EXE(x) ((x) & EP_FIRST_EXE_MASK)
+#define EP_SET_FIRST_EXE(x, ee) ((x) = ((x) & ~EP_FIRST_EXE_MASK) | (ee))
+
+#ifndef __ASSEMBLY__
+
+#include <cassert.h>
+#include <types.h>
+
+typedef struct aapcs64_params {
+	u_register_t arg0;
+	u_register_t arg1;
+	u_register_t arg2;
+	u_register_t arg3;
+	u_register_t arg4;
+	u_register_t arg5;
+	u_register_t arg6;
+	u_register_t arg7;
+} aapcs64_params_t;
+
+typedef struct aapcs32_params {
+	u_register_t arg0;
+	u_register_t arg1;
+	u_register_t arg2;
+	u_register_t arg3;
+} aapcs32_params_t;
+
+/*****************************************************************************
+ * This structure represents the superset of information needed while
+ * switching exception levels. The only two mechanisms to do so are
+ * ERET & SMC. Security state is indicated using bit zero of header
+ * attribute
+ * NOTE: BL1 expects entrypoint followed by spsr at an offset from the start
+ * of this structure defined by the macro `ENTRY_POINT_INFO_PC_OFFSET` while
+ * processing SMC to jump to BL31.
+ *****************************************************************************/
+typedef struct entry_point_info {
+	param_header_t h;
+	uintptr_t pc;
+	uint32_t spsr;
+#ifdef AARCH32
+	aapcs32_params_t args;
+#else
+	aapcs64_params_t args;
+#endif
+} entry_point_info_t;
+
+/*
+ * Compile time assertions related to the 'entry_point_info' structure to
+ * ensure that the assembler and the compiler view of the offsets of
+ * the structure members is the same.
+ */
+CASSERT(ENTRY_POINT_INFO_PC_OFFSET ==
+		__builtin_offsetof(entry_point_info_t, pc), \
+		assert_BL31_pc_offset_mismatch);
+
+CASSERT(ENTRY_POINT_INFO_ARGS_OFFSET == \
+		__builtin_offsetof(entry_point_info_t, args), \
+		assert_BL31_args_offset_mismatch);
+
+CASSERT(sizeof(uintptr_t) ==
+		__builtin_offsetof(entry_point_info_t, spsr) - \
+		__builtin_offsetof(entry_point_info_t, pc), \
+		assert_entrypoint_and_spsr_should_be_adjacent);
+
+#endif /*__ASSEMBLY__*/
+
+#endif /* __EP_INFO_H__ */
+