import: Cortex-M0 sources from upstream ATF

Imported from hash 3944adca5943a050ca7e7e9cc802a9ae04dec186

1 files changed, 133 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..b2dac4a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,133 @@
+#
+# Copyright (c) 2016, 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.
+#
+
+# Cross Compile
+M0_CROSS_COMPILE ?= arm-none-eabi-
+
+# Build architecture
+ARCH		:= cortex-m0
+
+# Build platform
+PLAT_M0		?= rk3399m0
+
+ifeq (${V},0)
+	Q=@
+else
+	Q=
+endif
+export Q
+
+.SUFFIXES:
+
+INCLUDES		+= -Iinclude/ \
+			   -I../../include/shared/
+
+# NOTE: Add C source files here
+C_SOURCES		:= src/startup.c \
+			   src/main.c	\
+			   src/suspend.c \
+			   src/dram.c	\
+			   src/stopwatch.c
+
+# Flags definition
+COMMON_FLAGS		:= -g -mcpu=$(ARCH) -mthumb -Wall -O3 -nostdlib -mfloat-abi=soft
+CFLAGS			:= -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-common
+ASFLAGS			:= -Wa,--gdwarf-2
+LDFLAGS			:= -Wl,--gc-sections -Wl,--build-id=none
+
+# Cross tool
+CC			:= ${M0_CROSS_COMPILE}gcc
+CPP			:= ${M0_CROSS_COMPILE}cpp
+AR			:= ${M0_CROSS_COMPILE}ar
+OC			:= ${M0_CROSS_COMPILE}objcopy
+OD			:= ${M0_CROSS_COMPILE}objdump
+NM			:= ${M0_CROSS_COMPILE}nm
+
+# NOTE: The line continuation '\' is required in the next define otherwise we
+# end up with a line-feed characer at the end of the last c filename.
+# Also bare this issue in mind if extending the list of supported filetypes.
+define SOURCES_TO_OBJS
+	$(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \
+	$(notdir $(patsubst %.S,%.o,$(filter %.S,$(1))))
+endef
+
+SOURCES 		:= $(C_SOURCES)
+OBJS 			:= $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES)))
+LINKERFILE		:= $(BUILD)/$(PLAT_M0).ld
+MAPFILE			:= $(BUILD)/$(PLAT_M0).map
+ELF 			:= $(BUILD)/$(PLAT_M0).elf
+BIN 			:= $(BUILD)/$(PLAT_M0).bin
+LINKERFILE_SRC		:= src/$(PLAT_M0).ld.S
+
+# Function definition related compilation
+define MAKE_C
+$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2))))
+-include $(patsubst %.o,%.d,$(OBJ))
+
+$(OBJ) : $(2)
+	@echo "  CC      $$<"
+	$$(Q)$$(CC) $$(COMMON_FLAGS) $$(CFLAGS) $$(INCLUDES) -MMD -MT $$@ -c $$< -o $$@
+endef
+
+define MAKE_S
+$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2))))
+
+$(OBJ) : $(2)
+	@echo "  AS      $$<"
+	$$(Q)$$(CC) -x assembler-with-cpp $$(COMMON_FLAGS) $$(ASFLAGS) -c $$< -o $$@
+endef
+
+define MAKE_OBJS
+	$(eval C_OBJS := $(filter %.c,$(2)))
+	$(eval REMAIN := $(filter-out %.c,$(2)))
+	$(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3))))
+
+	$(eval S_OBJS := $(filter %.S,$(REMAIN)))
+	$(eval REMAIN := $(filter-out %.S,$(REMAIN)))
+	$(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3))))
+
+	$(and $(REMAIN),$(error Unexpected source files present: $(REMAIN)))
+endef
+
+.DEFAULT_GOAL := $(BIN)
+
+$(LINKERFILE): $(LINKERFILE_SRC)
+	$(CC) $(COMMON_FLAGS) $(INCLUDES) -P -E -D__LINKER__ -MMD -MF $@.d -MT $@ -o $@ $<
+-include $(LINKERFILE).d
+
+$(ELF) : $(OBJS) $(LINKERFILE)
+	@echo "  LD      $@"
+	$(Q)$(CC) -o $@ $(COMMON_FLAGS) $(LDFLAGS) -Wl,-Map=$(MAPFILE) -Wl,-T$(LINKERFILE) $(OBJS)
+
+$(BIN) : $(ELF)
+	@echo "  BIN     $@"
+	$(Q)$(OC) -O binary $< $@
+
+$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1)))