1# 2# Copyright (c) 2016-2024, Arm Limited and Contributors. All rights reserved. 3# 4# SPDX-License-Identifier: BSD-3-Clause 5# 6 7# Cross Compile 8M0_CROSS_COMPILE ?= arm-none-eabi- 9 10# Build architecture 11ARCH := cortex-m0 12 13# Build platform 14PLAT_M0 ?= rk3399m0 15PLAT_M0_PMU ?= rk3399m0pmu 16 17ifeq (${V},0) 18 Q=@ 19else 20 Q= 21endif 22export Q 23 24.SUFFIXES: 25 26INCLUDES += -Iinclude/ \ 27 -I../../include/shared/ 28 29# NOTE: Add C source files here 30C_SOURCES_COMMON := src/startup.c 31C_SOURCES := src/dram.c \ 32 src/stopwatch.c 33C_SOURCES_PMU := src/suspend.c 34 35# Flags definition 36COMMON_FLAGS := -g -mcpu=$(ARCH) -mthumb -Wall -O3 -nostdlib -mfloat-abi=soft 37CFLAGS := -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-common 38ASFLAGS := -Wa,--gdwarf-2 39LDFLAGS := -Wl,--gc-sections -Wl,--build-id=none 40 41# Cross tool 42CC := ${M0_CROSS_COMPILE}gcc 43CPP := ${M0_CROSS_COMPILE}gcc -E 44AR := ${M0_CROSS_COMPILE}gcc-ar 45OC := ${M0_CROSS_COMPILE}objcopy 46OD := ${M0_CROSS_COMPILE}objdump 47 48# NOTE: The line continuation '\' is required in the next define otherwise we 49# end up with a line-feed characer at the end of the last c filename. 50# Also bare this issue in mind if extending the list of supported filetypes. 51define SOURCES_TO_OBJS 52 $(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \ 53 $(notdir $(patsubst %.S,%.o,$(filter %.S,$(1)))) 54endef 55 56SOURCES_COMMON := $(C_SOURCES_COMMON) 57SOURCES := $(C_SOURCES) 58SOURCES_PMU := $(C_SOURCES_PMU) 59OBJS_COMMON := $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES_COMMON))) 60OBJS := $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES))) 61OBJS_PMU := $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES_PMU))) 62LINKERFILE := $(BUILD)/$(PLAT_M0).ld 63MAPFILE := $(BUILD)/$(PLAT_M0).map 64MAPFILE_PMU := $(BUILD)/$(PLAT_M0_PMU).map 65ELF := $(BUILD)/$(PLAT_M0).elf 66ELF_PMU := $(BUILD)/$(PLAT_M0_PMU).elf 67BIN := $(BUILD)/$(PLAT_M0).bin 68BIN_PMU := $(BUILD)/$(PLAT_M0_PMU).bin 69LINKERFILE_SRC := src/$(PLAT_M0).ld.S 70 71# Function definition related compilation 72define MAKE_C 73$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2)))) 74-include $(patsubst %.o,%.d,$(OBJ)) 75 76$(OBJ) : $(2) 77 @echo " CC $$<" 78 $$(Q)$$(CC) $$(COMMON_FLAGS) $$(CFLAGS) $$(INCLUDES) -MMD -MT $$@ -c $$< -o $$@ 79endef 80 81define MAKE_S 82$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2)))) 83 84$(OBJ) : $(2) 85 @echo " AS $$<" 86 $$(Q)$$(CC) -x assembler-with-cpp $$(COMMON_FLAGS) $$(ASFLAGS) -c $$< -o $$@ 87endef 88 89define MAKE_OBJS 90 $(eval C_OBJS := $(filter %.c,$(2))) 91 $(eval REMAIN := $(filter-out %.c,$(2))) 92 $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3)))) 93 94 $(eval S_OBJS := $(filter %.S,$(REMAIN))) 95 $(eval REMAIN := $(filter-out %.S,$(REMAIN))) 96 $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3)))) 97 98 $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) 99endef 100 101.PHONY: all 102all: $(BIN) $(BIN_PMU) 103 104.DEFAULT_GOAL := all 105 106$(LINKERFILE): $(LINKERFILE_SRC) 107 $(CC) $(COMMON_FLAGS) $(INCLUDES) -P -E -D__LINKER__ -MMD -MF $@.d -MT $@ -o $@ $< 108-include $(LINKERFILE).d 109 110$(ELF) : $(OBJS) $(OBJS_COMMON) $(LINKERFILE) 111 @echo " LD $@" 112 $(Q)$(CC) -o $@ $(COMMON_FLAGS) $(LDFLAGS) -Wl,-Map=$(MAPFILE) -Wl,-T$(LINKERFILE) $(OBJS) $(OBJS_COMMON) 113 114%.bin : %.elf 115 @echo " BIN $@" 116 $(Q)$(OC) -O binary $< $@ 117 118$(ELF_PMU) : $(OBJS_COMMON) $(OBJS_PMU) $(LINKERFILE) 119 @echo " LD $@" 120 $(Q)$(CC) -o $@ $(COMMON_FLAGS) $(LDFLAGS) -Wl,-Map=$(MAPFILE_PMU) -Wl,-T$(LINKERFILE) $(OBJS_PMU) $(OBJS_COMMON) 121 122$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES_COMMON),$(1))) 123$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1))) 124$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES_PMU),$(1))) 125