1 # 2 # Copyright (C) 2016 The Android Open Source Project 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 # 16 17 #find build target 18 PLATFORM ?= stm32f4xx 19 CPU ?= cortexm4f 20 VARIANT ?= lunchbox 21 DEBUG ?= -DDEBUG 22 23 #bad words 24 BADWORDS += strcpy strcat atoi 25 BADWORDS += "rsaPrivOp=RSA private ops must never be compiled into firmware." 26 27 #find makefiles 28 MAKE_PLAT = misc/platform/$(PLATFORM)/Makefile 29 MAKE_CPU = misc/cpu/$(CPU)/Makefile 30 31 #link paths 32 ifdef VARIANT_PATH 33 LINK_PATH_MISC = $(VARIANT_PATH)/misc 34 LINK_PATH_SRC = $(VARIANT_PATH)/src 35 LINK_PATH_INC = $(VARIANT_PATH)/inc 36 else 37 LINK_PATH_MISC = misc/variant/$(VARIANT) 38 LINK_PATH_SRC = src/variant/$(VARIANT) 39 LINK_PATH_INC = inc/variant/$(VARIANT) 40 endif 41 42 #variant makefile 43 MAKE_VAR = $(LINK_PATH_MISC)/Makefile 44 45 #top make target 46 SRCS_os := 47 SRCS_bl := 48 DELIVERABLES := 49 real: all 50 51 #include makefiles for plat and cpu 52 include $(MAKE_PLAT) 53 include $(MAKE_CPU) 54 include $(MAKE_VAR) 55 56 FLAGS += -Wall -Werror -Iinc -Ilinks -Iexternal/freebsd/inc -I../lib/include -fshort-double 57 #help avoid commmon embedded C mistakes 58 FLAGS += -Wmissing-declarations -Wlogical-op -Waddress -Wempty-body -Wpointer-arith -Wenum-compare -Wdouble-promotion -Wfloat-equal -Wshadow -fno-strict-aliasing 59 60 OSFLAGS += -g -ggdb3 -D_OS_BUILD_ -O2 61 APPFLAGS += -Os 62 63 #debug mode 64 FLAGS += $(DEBUG) 65 66 #bootloader pieces 67 SRCS_bl += ../lib/nanohub/sha2.c ../lib/nanohub/rsa.c ../lib/nanohub/aes.c src/seos.c 68 69 #frameworks 70 SRCS_os += src/printf.c src/timer.c src/seos.c src/heap.c src/slab.c src/spi.c src/trylock.c 71 SRCS_os += src/hostIntf.c src/hostIntfI2c.c src/hostIntfSpi.c src/nanohubCommand.c src/sensors.c src/syscall.c 72 SRCS_os += src/eventQ.c src/osApi.c src/appSec.c src/simpleQ.c src/floatRt.c 73 74 #some help for bootloader 75 SRCS_bl += src/printf.c 76 77 ifndef PLATFORM_HAS_HARDWARE_CRC 78 SRCS_os += ../lib/nanohub/softcrc.c 79 endif 80 81 #app code 82 include $(wildcard app/*/Makefile) 83 84 85 #extra deps 86 DEPS += $(wildcard app/*.h) 87 DEPS += $(wildcard inc/*.h) 88 DEPS += Makefile $(MAKE_PLAT) $(MAKE_CPU) $(MAKE_VAR) 89 90 all: symlinks $(DELIVERABLES) 91 92 symlinks: links/p_$(PLATFORM) links/c_$(CPU) links/v_$(VARIANT) 93 94 links/p_$(PLATFORM): 95 rm -rf links/plat links/p_* 96 mkdir -p links/plat 97 ln -s ../../misc/platform/$(PLATFORM) links/plat/misc 98 ln -s ../../src/platform/$(PLATFORM) links/plat/src 99 ln -s ../../inc/platform/$(PLATFORM) links/plat/inc 100 touch links/p_$(PLATFORM) 101 102 links/c_$(CPU): 103 rm -rf links/cpu links/c_* 104 mkdir -p links/cpu 105 ln -s ../../misc/cpu/$(CPU) links/cpu/misc 106 ln -s ../../src/cpu/$(CPU) links/cpu/src 107 ln -s ../../inc/cpu/$(CPU) links/cpu/inc 108 touch links/c_$(CPU) 109 110 links/v_$(VARIANT): 111 rm -rf links/variant links/v_* 112 mkdir -p links/variant 113 ln -s ../../$(LINK_PATH_MISC) links/variant/misc 114 ln -s ../../$(LINK_PATH_SRC) links/variant/src 115 ln -s ../../$(LINK_PATH_INC) links/variant/inc 116 touch links/v_$(VARIANT) 117 118 %.unchecked.elf: symlinks $(SRCS_$*) $(DEPS) 119 $(GCC) -o $@ $(SRCS_$*) $(OSFLAGS) $(OSFLAGS_$*) $(FLAGS) -lgcc -nostdlib 120 121 %.checked.elf : %.unchecked.elf symcheck.sh 122 ./symcheck.sh $< $@ $(BADWORDS) 123 124 full.bin: $(BL_FILE) $(OS_FILE) 125 cat $(BL_FILE) $(OS_FILE) > $@ 126 127 clean: 128 rm -rf $(DELIVERABLES) os.elf bootloader.elf links $(CLEANFILES) 129 130
