layerscape: Initial TF-A support for LS1043ardb

This patch introduce TF-A support for NXP's ls1043a platform.
more details information of ls1043a chip and ls1043ardb board
can be found at docs/plat/ls1043a.rst.

Boot sequence on ls1043a is: bootrom loads bl1 firstly, then bl1
loads bl2, bl2 will load bl31, bl32 and bl33, bl31 will boot
bl32(tee os) and bl33(u-boot or uefi), bl33 boot Linux kernel.

Now TF-A on ls1043ardb platform has the following features in this patch:
	* Support boot from Nor flash.
	* TF-A can boot bl33 which runs in el2 of non-secure world.
	* TF-A boot OPTee OS.
	* Support PSCI

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: Chenyin.Ha <Chenyin.Ha@nxp.com>
Signed-off-by: Chenhui Zhao <chenhui.zhao@nxp.com>
Signed-off-by: jiaheng.fan <jiaheng.fan@nxp.com>
Signed-off-by: Wen He <wen.he_1@nxp.com>
diff --git a/plat/layerscape/common/ls_common.mk b/plat/layerscape/common/ls_common.mk
new file mode 100644
index 0000000..1a80e9f
--- /dev/null
+++ b/plat/layerscape/common/ls_common.mk
@@ -0,0 +1,62 @@
+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+
+# Process LS1043_DISABLE_TRUSTED_WDOG flag
+# TODO:Temparally disabled it on development phase, not implemented yet
+LS1043_DISABLE_TRUSTED_WDOG	:=	1
+
+# On Layerscape platforms, separate the code and read-only data sections to allow
+# mapping the former as executable and the latter as execute-never.
+SEPARATE_CODE_AND_RODATA	:=	1
+
+# Enable new version of image loading on Layerscape platforms
+LOAD_IMAGE_V2			:=	1
+
+# Use generic OID definition (tbbr_oid.h)
+USE_TBBR_DEFS			:=	1
+
+
+COLD_BOOT_SINGLE_CPU		:=	1
+
+PLAT_INCLUDES		+=	-Iinclude/common/tbbr
+
+PLAT_BL_COMMON_SOURCES	+=	plat/layerscape/common/${ARCH}/ls_helpers.S		\
+				plat/layerscape/common/ls_common.c
+
+include lib/xlat_tables_v2/xlat_tables.mk
+
+PLAT_BL_COMMON_SOURCES	+=	${XLAT_TABLES_LIB_SRCS}
+
+BL1_SOURCES		+=			\
+				drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				drivers/io/io_storage.c				\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_bl1_setup.c			\
+				plat/layerscape/common/ls_io_storage.c
+
+BL2_SOURCES		+=	drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				drivers/io/io_storage.c				\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_bl2_setup.c			\
+				plat/layerscape/common/ls_io_storage.c
+BL2_SOURCES		+=	plat/layerscape/common/${ARCH}/ls_bl2_mem_params_desc.c
+BL2_SOURCES		+=	plat/layerscape/common/ls_image_load.c		\
+					common/desc_image_load.c
+
+BL31_SOURCES		+=	plat/layerscape/common/ls_bl31_setup.c		\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_topology.c			\
+				plat/layerscape/common/ns_access.c		\
+				plat/common/plat_psci_common.c
+# Verify build config
+# -------------------
+
+ifneq (${LOAD_IMAGE_V2}, 1)
+  $(error Error: Layerscape needs LOAD_IMAGE_V2=1)
+endif