plat: renesas: rzg: Add HopeRun HiHope RZ/G2M board support

The HiHope RZ/G2M board from HopeRun consists of main board
(HopeRun HiHope RZ/G2M main board) and sub board(HopeRun
HiHope RZ/G2M sub board). The HiHope RZ/G2M sub board sits
below the HiHope RZ/G2M main board.

This patch adds the required board support to boot HopeRun HiHope
RZ/G2M board.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: I3ed55aa4a2cc5c9d9cd6440e087bcd93186520c7
diff --git a/plat/renesas/rzg/platform.mk b/plat/renesas/rzg/platform.mk
new file mode 100644
index 0000000..421cbbe
--- /dev/null
+++ b/plat/renesas/rzg/platform.mk
@@ -0,0 +1,222 @@
+#
+# Copyright (c) 2018-2020, Renesas Electronics Corporation. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+include plat/renesas/common/common.mk
+
+ifndef LSI
+  $(error "Error: Unknown LSI. Please use LSI=<LSI name> to specify the LSI")
+else
+  ifeq (${LSI},AUTO)
+    RCAR_LSI:=${RCAR_AUTO}
+  else ifeq (${LSI},G2M)
+    RCAR_LSI:=${RZ_G2M}
+    ifndef LSI_CUT
+      # enable compatible function.
+      RCAR_LSI_CUT_COMPAT := 1
+      $(eval $(call add_define,RCAR_LSI_CUT_COMPAT))
+    else
+      # disable compatible function.
+      ifeq (${LSI_CUT},10)
+        RCAR_LSI_CUT:=0
+      else ifeq (${LSI_CUT},11)
+        RCAR_LSI_CUT:=1
+      else ifeq (${LSI_CUT},13)
+        RCAR_LSI_CUT:=3
+      else ifeq (${LSI_CUT},30)
+        RCAR_LSI_CUT:=20
+      else
+        $(error "Error: ${LSI_CUT} is not supported.")
+      endif
+      $(eval $(call add_define,RCAR_LSI_CUT))
+    endif
+  else
+    $(error "Error: ${LSI} is not supported.")
+  endif
+  $(eval $(call add_define,RCAR_LSI))
+endif
+
+# Process RZG_LCS_STATE_DETECTION_ENABLE flag
+# Enable to get LCS state information
+ifndef RZG_LCS_STATE_DETECTION_ENABLE
+RZG_LCS_STATE_DETECTION_ENABLE := 0
+endif
+$(eval $(call add_define,RZG_LCS_STATE_DETECTION_ENABLE))
+
+# Process RCAR_SECURE_BOOT flag
+ifndef RCAR_SECURE_BOOT
+RCAR_SECURE_BOOT := 0
+endif
+$(eval $(call add_define,RCAR_SECURE_BOOT))
+
+# LCS state of RZ/G2 Chip is all CM.
+# However certain chips(RZ/G2M and RZ/G2E) have incorrect factory Fuse settings
+# which results in getting incorrect LCS states
+# if need to enable RCAR_SECURE_BOOT, make sure the chip has proper factory Fuse settings.
+ifeq (${RCAR_SECURE_BOOT},1)
+  ifeq (${RZG_LCS_STATE_DETECTION_ENABLE},0)
+    $(error "Error: Please check the chip has proper factory Fuse settings and set RZG_LCS_STATE_DETECTION_ENABLE to enable.")
+  endif
+endif
+
+# lock RPC HYPERFLASH access by default
+# unlock to repogram the ATF firmware from u-boot
+ifndef RCAR_RPC_HYPERFLASH_LOCKED
+RCAR_RPC_HYPERFLASH_LOCKED := 1
+endif
+$(eval $(call add_define,RCAR_RPC_HYPERFLASH_LOCKED))
+
+# Process RCAR_QOS_TYPE flag
+ifndef RCAR_QOS_TYPE
+RCAR_QOS_TYPE := 0
+endif
+$(eval $(call add_define,RCAR_QOS_TYPE))
+
+# Process RCAR_DRAM_SPLIT flag
+ifndef RCAR_DRAM_SPLIT
+RCAR_DRAM_SPLIT := 0
+endif
+$(eval $(call add_define,RCAR_DRAM_SPLIT))
+
+# Process RCAR_BL33_EXECUTION_EL flag
+ifndef RCAR_BL33_EXECUTION_EL
+RCAR_BL33_EXECUTION_EL := 0
+endif
+$(eval $(call add_define,RCAR_BL33_EXECUTION_EL))
+
+# Process RCAR_AVS_SETTING_ENABLE flag
+ifndef AVS_SETTING_ENABLE
+AVS_SETTING_ENABLE := 0
+endif
+$(eval $(call add_define,AVS_SETTING_ENABLE))
+
+# Process RCAR_LOSSY_ENABLE flag
+ifndef RCAR_LOSSY_ENABLE
+RCAR_LOSSY_ENABLE := 0
+endif
+$(eval $(call add_define,RCAR_LOSSY_ENABLE))
+
+# Process LIFEC_DBSC_PROTECT_ENABLE flag
+ifndef LIFEC_DBSC_PROTECT_ENABLE
+LIFEC_DBSC_PROTECT_ENABLE := 1
+endif
+$(eval $(call add_define,LIFEC_DBSC_PROTECT_ENABLE))
+
+# Process RCAR_GEN3_ULCB flag
+ifndef RCAR_GEN3_ULCB
+RCAR_GEN3_ULCB := 0
+endif
+
+# Process RCAR_REF_INT flag
+ifndef RCAR_REF_INT
+RCAR_REF_INT :=0
+endif
+$(eval $(call add_define,RCAR_REF_INT))
+
+# Process RCAR_REWT_TRAINING flag
+ifndef RCAR_REWT_TRAINING
+RCAR_REWT_TRAINING := 1
+endif
+$(eval $(call add_define,RCAR_REWT_TRAINING))
+
+# Process RCAR_SYSTEM_SUSPEND flag
+ifndef RCAR_SYSTEM_SUSPEND
+RCAR_SYSTEM_SUSPEND := 0
+endif
+$(eval $(call add_define,RCAR_SYSTEM_SUSPEND))
+
+# Process RCAR_DRAM_LPDDR4_MEMCONF flag
+ifndef RCAR_DRAM_LPDDR4_MEMCONF
+RCAR_DRAM_LPDDR4_MEMCONF :=1
+endif
+$(eval $(call add_define,RCAR_DRAM_LPDDR4_MEMCONF))
+
+# Process RCAR_DRAM_DDR3L_MEMCONF flag
+ifndef RCAR_DRAM_DDR3L_MEMCONF
+RCAR_DRAM_DDR3L_MEMCONF :=1
+endif
+$(eval $(call add_define,RCAR_DRAM_DDR3L_MEMCONF))
+
+# Process RCAR_DRAM_DDR3L_MEMDUAL flag
+ifndef RCAR_DRAM_DDR3L_MEMDUAL
+RCAR_DRAM_DDR3L_MEMDUAL :=1
+endif
+$(eval $(call add_define,RCAR_DRAM_DDR3L_MEMDUAL))
+
+# Process RCAR_BL33_ARG0 flag
+ifdef RCAR_BL33_ARG0
+$(eval $(call add_define,RCAR_BL33_ARG0))
+endif
+
+#Process RCAR_BL2_DCACHE flag
+ifndef RCAR_BL2_DCACHE
+RCAR_BL2_DCACHE := 0
+endif
+$(eval $(call add_define,RCAR_BL2_DCACHE))
+
+# Process RCAR_DRAM_CHANNEL flag
+ifndef RCAR_DRAM_CHANNEL
+RCAR_DRAM_CHANNEL :=15
+endif
+$(eval $(call add_define,RCAR_DRAM_CHANNEL))
+
+#Process RCAR_SYSTEM_RESET_KEEPON_DDR flag
+ifndef RCAR_SYSTEM_RESET_KEEPON_DDR
+RCAR_SYSTEM_RESET_KEEPON_DDR := 0
+endif
+$(eval $(call add_define,RCAR_SYSTEM_RESET_KEEPON_DDR))
+
+include drivers/renesas/rzg/ddr/ddr.mk
+include drivers/renesas/rzg/qos/qos.mk
+include drivers/renesas/rzg/pfc/pfc.mk
+include lib/libfdt/libfdt.mk
+
+PLAT_INCLUDES	+=	-Idrivers/renesas/rzg/ddr		\
+			-Idrivers/renesas/rzg/qos		\
+			-Idrivers/renesas/rzg/board		\
+			-Idrivers/renesas/common		\
+			-Idrivers/renesas/common/iic_dvfs	\
+			-Idrivers/renesas/common/avs		\
+			-Idrivers/renesas/common/delay		\
+			-Idrivers/renesas/common/rom		\
+			-Idrivers/renesas/common/scif		\
+			-Idrivers/renesas/common/emmc		\
+			-Idrivers/renesas/common/pwrc		\
+			-Idrivers/renesas/common/io
+
+BL2_SOURCES	+=	plat/renesas/rzg/bl2_plat_setup.c	\
+			drivers/renesas/rzg/board/board.c
+
+# build the layout images for the bootrom and the necessary srecords
+rzg: rzg_layout_create rzg_srecord
+distclean realclean clean: clean_layout_tool clean_srecord
+
+# layout images
+LAYOUT_TOOLPATH ?= tools/renesas/rzg_layout_create
+
+clean_layout_tool:
+	@echo "clean layout tool"
+	${Q}${MAKE} -C ${LAYOUT_TOOLPATH} clean
+
+.PHONY: rzg_layout_create
+rzg_layout_create:
+	@echo "generating layout srecs"
+	${Q}${MAKE} CPPFLAGS="-D=AARCH64" --no-print-directory -C ${LAYOUT_TOOLPATH}
+
+# srecords
+SREC_PATH	= ${BUILD_PLAT}
+BL2_ELF_SRC	= ${SREC_PATH}/bl2/bl2.elf
+BL31_ELF_SRC	= ${SREC_PATH}/bl31/bl31.elf
+
+clean_srecord:
+	@echo "clean bl2 and bl31 srecs"
+	rm -f ${SREC_PATH}/bl2.srec ${SREC_PATH}/bl31.srec
+
+.PHONY: rzg_srecord
+rzg_srecord: $(BL2_ELF_SRC) $(BL31_ELF_SRC)
+	@echo "generating srec: ${SREC_PATH}/bl2.srec"
+	$(Q)$(OC) -O srec --srec-forceS3 ${BL2_ELF_SRC}  ${SREC_PATH}/bl2.srec
+	@echo "generating srec: ${SREC_PATH}/bl31.srec"
+	$(Q)$(OC) -O srec --srec-forceS3 ${BL31_ELF_SRC} ${SREC_PATH}/bl31.srec