1#
2# Copyright (c) 2016-2024, Arm Limited and Contributors. All rights reserved.
3#
4# SPDX-License-Identifier: BSD-3-Clause
5#
6
7toolchains := rk3399-m0
8
9include ../../../../../make_helpers/toolchain.mk
10
11# Cross Compile
12M0_CROSS_COMPILE ?= arm-none-eabi-
13
14# Build architecture
15ARCH		:= cortex-m0
16
17# Build platform
18PLAT_M0		?= rk3399m0
19PLAT_M0_PMU	?= rk3399m0pmu
20
21ifeq (${V},0)
22	Q=@
23else
24	Q=
25endif
26export Q
27
28.SUFFIXES:
29
30INCLUDES		+= -Iinclude/ \
31			   -I../../include/shared/
32
33# NOTE: Add C source files here
34C_SOURCES_COMMON	:= src/startup.c
35C_SOURCES		:= src/dram.c	\
36			   src/stopwatch.c
37C_SOURCES_PMU		:= src/suspend.c
38
39# Flags definition
40COMMON_FLAGS		:= -g -mcpu=$(ARCH) -mthumb -Wall -O3 -nostdlib -mfloat-abi=soft
41CFLAGS			:= -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-common
42ASFLAGS			:= -Wa,--gdwarf-2
43LDFLAGS			:= -Wl,--gc-sections -Wl,--build-id=none
44
45# NOTE: The line continuation '\' is required in the next define otherwise we
46# end up with a line-feed characer at the end of the last c filename.
47# Also bare this issue in mind if extending the list of supported filetypes.
48define SOURCES_TO_OBJS
49	$(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \
50	$(notdir $(patsubst %.S,%.o,$(filter %.S,$(1))))
51endef
52
53SOURCES_COMMON		:= $(C_SOURCES_COMMON)
54SOURCES 		:= $(C_SOURCES)
55SOURCES_PMU		:= $(C_SOURCES_PMU)
56OBJS_COMMON		:= $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES_COMMON)))
57OBJS 			:= $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES)))
58OBJS_PMU 		:= $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES_PMU)))
59LINKERFILE		:= $(BUILD)/$(PLAT_M0).ld
60MAPFILE			:= $(BUILD)/$(PLAT_M0).map
61MAPFILE_PMU		:= $(BUILD)/$(PLAT_M0_PMU).map
62ELF 			:= $(BUILD)/$(PLAT_M0).elf
63ELF_PMU			:= $(BUILD)/$(PLAT_M0_PMU).elf
64BIN 			:= $(BUILD)/$(PLAT_M0).bin
65BIN_PMU			:= $(BUILD)/$(PLAT_M0_PMU).bin
66LINKERFILE_SRC		:= src/$(PLAT_M0).ld.S
67
68# Function definition related compilation
69define MAKE_C
70$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2))))
71-include $(patsubst %.o,%.d,$(OBJ))
72
73$(OBJ) : $(2)
74	@echo "  CC      $$<"
75	$$(Q)$(rk3399-m0-cc) $$(COMMON_FLAGS) $$(CFLAGS) $$(INCLUDES) -MMD -MT $$@ -c $$< -o $$@
76endef
77
78define MAKE_S
79$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2))))
80
81$(OBJ) : $(2)
82	@echo "  AS      $$<"
83	$$(Q)$(rk3399-m0-cc) -x assembler-with-cpp $$(COMMON_FLAGS) $$(ASFLAGS) -c $$< -o $$@
84endef
85
86define MAKE_OBJS
87	$(eval C_OBJS := $(filter %.c,$(2)))
88	$(eval REMAIN := $(filter-out %.c,$(2)))
89	$(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3))))
90
91	$(eval S_OBJS := $(filter %.S,$(REMAIN)))
92	$(eval REMAIN := $(filter-out %.S,$(REMAIN)))
93	$(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3))))
94
95	$(and $(REMAIN),$(error Unexpected source files present: $(REMAIN)))
96endef
97
98.PHONY: all
99all: $(BIN) $(BIN_PMU)
100
101.DEFAULT_GOAL := all
102
103$(LINKERFILE): $(LINKERFILE_SRC)
104	$(rk3399-m0-cc) $(COMMON_FLAGS) $(INCLUDES) -P -E -D__LINKER__ -MMD -MF $@.d -MT $@ -o $@ $<
105-include $(LINKERFILE).d
106
107$(ELF) : $(OBJS) $(OBJS_COMMON) $(LINKERFILE)
108	@echo "  LD      $@"
109	$(Q)$(rk3399-m0-cc) -o $@ $(COMMON_FLAGS) $(LDFLAGS) -Wl,-Map=$(MAPFILE) -Wl,-T$(LINKERFILE) $(OBJS) $(OBJS_COMMON)
110
111%.bin : %.elf
112	@echo "  BIN     $@"
113	$(Q)$(rk3399-m0-oc) -O binary $< $@
114
115$(ELF_PMU) : $(OBJS_COMMON) $(OBJS_PMU) $(LINKERFILE)
116	@echo "  LD      $@"
117	$(Q)$(rk3399-m0-cc) -o $@ $(COMMON_FLAGS) $(LDFLAGS) -Wl,-Map=$(MAPFILE_PMU) -Wl,-T$(LINKERFILE) $(OBJS_PMU) $(OBJS_COMMON)
118
119$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES_COMMON),$(1)))
120$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1)))
121$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES_PMU),$(1)))
122