mk/bluepill.mk

   1 # Generic Makefile fragment for Blue Pill devices and LibOpenCM3
   2 #
   3 # Parameters:
   4 #
   5 #       ROOT                    path to root of the repository
   6 #       BINARY                  binary to build (without extension)
   7 #       OBJS                    list of object files
   8 #       LIB_OBJS                list of library object files
   9 #       WITH_BOOT_LOADER        define if code origin should be shifted by 8K for boot loader
  10 #       WITH_DFU_FLASH          flashing uses dfu-util
  11 #
  12
  13 vpath %.c $(ROOT)/lib
  14 OBJS += $(LIB_OBJS)
  15
  16 OPENCM3_DIR=/home/mj/stm/libopencm3
  17 DEVICE=stm32f103x8
  18
  19 .PHONY: all
  20 all: $(BINARY).elf $(BINARY).bin
  21
  22 .PHONY: flash
  23 flash: $(BINARY).flash
  24
  25 ifneq ($(V),1)
  26 Q               := @
  27 NULL            := 2>/dev/null
  28 endif
  29
  30 include $(OPENCM3_DIR)/mk/genlink-config.mk
  31
  32 ifdef WITH_BOOT_LOADER
  33
  34 # We want to generate a linked script for a different ROM start address
  35 UCW_LDSCRIPT=bootloader-$(DEVICE).ld
  36
  37 bootloader-$(DEVICE).ld: generated.$(DEVICE).ld
  38         @printf "  GENLNK2 $@\n"
  39         $(Q)sed '/^ rom /s/ORIGIN = 0x08000000/ORIGIN = 0x08002000/' <$< >$@
  40
  41 else
  42
  43 UCW_LDSCRIPT=$(LDSCRIPT)
  44
  45 endif
  46
  47 PREFIX          ?= arm-none-eabi
  48
  49 CC              := $(PREFIX)-gcc
  50 CXX             := $(PREFIX)-g++
  51 LD              := $(PREFIX)-gcc
  52 AR              := $(PREFIX)-ar
  53 AS              := $(PREFIX)-as
  54 OBJCOPY         := $(PREFIX)-objcopy
  55 OBJDUMP         := $(PREFIX)-objdump
  56 GDB             := $(PREFIX)-gdb
  57 OPT             := -Os
  58 DEBUG           := -ggdb3
  59 CSTD            ?= -std=gnu99
  60
  61 TGT_CFLAGS      += $(OPT) $(CSTD) $(DEBUG)
  62 TGT_CFLAGS      += $(ARCH_FLAGS)
  63 TGT_CFLAGS      += -Wall -Wextra -Wshadow -Wimplicit-function-declaration
  64 TGT_CFLAGS      += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes -Wno-parentheses
  65 TGT_CFLAGS      += -fno-common -ffunction-sections -fdata-sections
  66 TGT_CFLAGS      += -I. -I$(ROOT)/lib
  67
  68 TGT_CPPFLAGS    += -MD
  69
  70 TGT_LDFLAGS     += --static -nostartfiles
  71 TGT_LDFLAGS     += -T$(UCW_LDSCRIPT)
  72 TGT_LDFLAGS     += $(ARCH_FLAGS) $(DEBUG)
  73 TGT_LDFLAGS     += -Wl,-Map=$(*).map -Wl,--cref
  74 TGT_LDFLAGS     += -Wl,--gc-sections
  75 ifeq ($(V),99)
  76 TGT_LDFLAGS     += -Wl,--print-gc-sections
  77 endif
  78
  79 LDLIBS          += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
  80
  81 include $(OPENCM3_DIR)/mk/genlink-rules.mk
  82
  83 %.bin: %.elf
  84         @printf "  OBJCOPY $(*).bin\n"
  85         $(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
  86
  87 %.elf: $(OBJS) $(UCW_LDSCRIPT)
  88         @printf "  LD      $(*).elf\n"
  89         $(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $*.elf
  90
  91 %.o: %.c
  92         @printf "  CC      $(*).c\n"
  93         $(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
  94
  95 .PHONY: clean
  96 clean:
  97         @printf "  CLEAN\n"
  98         $(Q)rm -f *.elf *.bin *.o *.d *.map $(LDSCRIPT) $(UCW_LDSCRIPT)
  99
 100 ifdef WITH_DFU_FLASH
 101
 102 %.flash: %.bin
 103         @printf "  FLASH  $<\n"
 104         $(Q)dfu-util -a2 -D $(*).bin
 105
 106 else
 107
 108 ifdef WITH_SERIAL_FLASH
 109
 110 BOOT_SERIAL ?= /dev/ttyUSB0
 111
 112 %.flash: %.bin
 113         @printf "  FLASH  $<\n"
 114         $(Q)$(ROOT)/bin/stm32flash $(BOOT_SERIAL) -i 'dtr,-dtr' -w $< -g 0
 115
 116 .PHONY: reset
 117 reset: all
 118         $(Q)$(ROOT)/bin/stm32flash $(BOOT_SERIAL) -i 'dtr,-dtr' -g 0
 119
 120 else
 121
 122 %.flash: %.bin
 123         @printf "  FLASH  $<\n"
 124         $(Q)$(ROOT)/bin/st-flash write $(*).bin 0x8000000
 125
 126 .PHONY: reset
 127 reset:
 128         $(ROOT)/bin/st-flash reset
 129
 130 endif
 131 endif
 132
 133 .SECONDEXPANSION:
 134 .SECONDARY:
 135
 136 -include $(OBJS:.o=.d)