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#
# 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
#
# For a default cross-compile we use the naming convention from crosstools-ng
# as this toolchain can be easily and quickly regenerated from source.
CROSS_COMPILE ?= arm-cortex_m0-eabi-
# Build architecture
ARCH := cortex-m0
# Build platform
PLAT_M0 ?= rk3399m0
V ?= 0
ifeq (${V},0)
Q=@
else
Q=
endif
export Q
.SUFFIXES:
INCLUDES += -Iinclude/ \
-Iinclude/shared/
# NOTE: Add C source files here
C_SOURCES := src/startup.c \
src/main.c \
src/suspend.c \
src/dram.c \
src/stopwatch.c
# Flags definition
COMMON_FLAGS := -g -mcpu=$(ARCH) -mthumb -Wall -Os -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 := ${CROSS_COMPILE}gcc
CPP := ${CROSS_COMPILE}cpp
AR := ${CROSS_COMPILE}ar
OC := ${CROSS_COMPILE}objcopy
OD := ${CROSS_COMPILE}objdump
NM := ${CROSS_COMPILE}nm
define SOURCES_TO_OBJS
$(patsubst %.c,%.o,$(filter %.c,$(1))) \
$(patsubst %.S,%.o,$(filter %.S,$(1)))
endef
CSRC := $(C_SOURCES)
OBJS := $(CSRC:.c=.o) $(SSRC:.s=.o)
LINKERFILE := $(PLAT_M0).ld
MAPFILE := $(PLAT_M0).map
ELF := $(PLAT_M0).elf
BIN := $(PLAT_M0).bin
LINKERFILE_SRC := src/$(PLAT_M0).ld.S
%.o : %.c
@echo " CC $<"
$(Q)$(CC) $(COMMON_FLAGS) $(CFLAGS) $(INCLUDES) -MMD -MT $@ -c $< -o $@
$.o : %.s
@echo " AS $<"
$(Q)$(CC) -x assembler-with-cpp $(COMMON_FLAGS) $(ASFLAGS) -c $< -o $@
.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 $< $@
clean:
@echo " CLEAN"
$(Q)rm -f $(OBJS) $(ELF) $(BIN) $(LINKERFILE)
$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1)))
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