plat/arm/sgi: add support for SGI-Clark.Ares platform

SGI-Clark.Ares platform is a variant of the SGI-Clark platform. It has
two clusters of four Ares CPUs each. Though very similar to the SGI575
platform, there are subtle differences. HW_CONFIG and TB_FW_CONFIG dts
files have been added.

Change-Id: I740a33cbd1c3b1f1984cb56243b46ad379bab3e6
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
diff --git a/plat/arm/board/sgiclarka/platform.mk b/plat/arm/board/sgiclarka/platform.mk
new file mode 100644
index 0000000..fc2f766
--- /dev/null
+++ b/plat/arm/board/sgiclarka/platform.mk
@@ -0,0 +1,38 @@
+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+include plat/arm/css/sgi/sgi-common.mk
+
+SGICLARKA_BASE		=	plat/arm/board/sgiclarka
+
+PLAT_INCLUDES		+=	-I${SGICLARKA_BASE}/include/
+
+SGI_CPU_SOURCES		:=	lib/cpus/aarch64/cortex_ares.S
+
+BL1_SOURCES		+=	${SGI_CPU_SOURCES}
+
+BL2_SOURCES		+=	lib/utils/mem_region.c			\
+				plat/arm/common/arm_nor_psci_mem_protect.c
+
+BL31_SOURCES		+=	${SGI_CPU_SOURCES}			\
+				drivers/cfi/v2m/v2m_flash.c		\
+				lib/utils/mem_region.c			\
+				plat/arm/common/arm_nor_psci_mem_protect.c
+
+# Add the FDT_SOURCES and options for Dynamic Config
+FDT_SOURCES		+=	${SGICLARKA_BASE}/fdts/${PLAT}_tb_fw_config.dts
+TB_FW_CONFIG		:=	${BUILD_PLAT}/fdts/${PLAT}_tb_fw_config.dtb
+
+# Add the TB_FW_CONFIG to FIP and specify the same to certtool
+$(eval $(call TOOL_ADD_PAYLOAD,${TB_FW_CONFIG},--tb-fw-config))
+
+FDT_SOURCES		+=	${SGICLARKA_BASE}/fdts/${PLAT}.dts
+HW_CONFIG		:=	${BUILD_PLAT}/fdts/${PLAT}.dtb
+
+# Add the HW_CONFIG to FIP and specify the same to certtool
+$(eval $(call TOOL_ADD_PAYLOAD,${HW_CONFIG},--hw-config))
+
+override CTX_INCLUDE_AARCH32_REGS	:= 0