CC      = arm-none-eabi-gcc
CPP     = arm-none-eabi-cpp
LD      = arm-none-eabi-gcc
AR      = arm-none-eabi-ar
OBJCOPY = arm-none-eabi-objcopy
OBJDUMP = arm-none-eabi-objdump
NM      = arm-none-eabi-nm
SIZE    = arm-none-eabi-size
SREC_CAT = srec_cat

CPU_ABS_PATH       = arch/cpu/cc26xx-cc13xx
TI_XXWARE = $(CONTIKI_CPU)/$(TI_XXWARE_PATH)

### cc26xxware sources under driverlib will be added to the MODULES list
TI_XXWARE_SRC = $(CPU_ABS_PATH)/$(TI_XXWARE_PATH)/driverlib

### The directory with startup sources will be added to the CONTIKI_CPU_DIRS
### and the sources therein are added to the sources list explicitly. They are
### also listed explicitly in the linker command (through TARGET_STARTFILES),
### to make sure they always get linked in the image
TI_XXWARE_STARTUP_DIR = $(TI_XXWARE_PATH)/startup_files
TI_XXWARE_STARTUP_SRCS = ccfg.c startup_gcc.c

### MODULES will add some of these to the include path, but we need to add
### them earlier to prevent filename clashes with Contiki core files
CFLAGS += -I$(TI_XXWARE) -I$(CONTIKI)/$(TI_XXWARE_SRC)
CFLAGS += -I$(TI_XXWARE)/inc
MODULES += $(TI_XXWARE_SRC)

LDSCRIPT = $(CONTIKI_CPU)/cc26xx.ld

CFLAGS += -mcpu=cortex-m3 -mthumb -mlittle-endian
CFLAGS += -ffunction-sections -fdata-sections
CFLAGS += -fshort-enums -fomit-frame-pointer -fno-strict-aliasing
CFLAGS += -Wall -std=c99

LDFLAGS += -mcpu=cortex-m3 -mthumb -mlittle-endian -nostartfiles
LDFLAGS += -T $(LDSCRIPT)
LDFLAGS += -Wl,--gc-sections,--sort-section=alignment
LDFLAGS += -Wl,-Map=$(@:.elf=-$(TARGET).map),--cref,--no-warn-mismatch
OBJCOPY_FLAGS += -O binary --gap-fill 0xff
OBJDUMP_FLAGS += --disassemble --source --disassembler-options=force-thumb

ifeq ($(WERROR),1)
CFLAGS += -Werror
endif

### Are we building with code size optimisations?
SMALL ?= 1
ifeq ($(SMALL),1)
  CFLAGS += -Os
else
  CFLAGS += -O2
endif

### If the user-specified a Node ID, pass a define
ifdef NODEID
  CFLAGS += -DIEEE_ADDR_NODE_ID=$(NODEID)
endif

### CPU-dependent cleanup files
CLEAN += *.d *.elf *.hex

### CPU-dependent directories
CONTIKI_CPU_DIRS = . dev rf-core rf-core/api $(TI_XXWARE_STARTUP_DIR)

### Use the existing debug I/O in arch/cpu/arm/common
CONTIKI_CPU_DIRS += ../arm/common/dbg-io

### CPU-dependent source files
CONTIKI_CPU_SOURCEFILES += clock.c rtimer-arch.c soc-rtc.c uart.c
CONTIKI_CPU_SOURCEFILES += contiki-watchdog.c aux-ctrl.c
CONTIKI_CPU_SOURCEFILES += putchar.c ieee-addr.c batmon-sensor.c adc-sensor.c
CONTIKI_CPU_SOURCEFILES += slip-arch.c slip.c cc26xx-uart.c lpm.c
CONTIKI_CPU_SOURCEFILES += gpio-interrupt.c oscillators.c
CONTIKI_CPU_SOURCEFILES += rf-core.c rf-ble.c ieee-mode.c
CONTIKI_CPU_SOURCEFILES += random.c soc-trng.c

DEBUG_IO_SOURCEFILES += dbg-printf.c dbg-snprintf.c dbg-sprintf.c strformat.c

CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES) $(DEBUG_IO_SOURCEFILES)

TARGET_START_SOURCEFILES += fault-handlers.c $(TI_XXWARE_STARTUP_SRCS)
TARGET_STARTFILES = $(addprefix $(OBJECTDIR)/,$(call oname, $(TARGET_START_SOURCEFILES)))

PYTHON = python
BSL_FLAGS += -e -w -v

ifdef PORT
  BSL_FLAGS += -p $(PORT)
endif

BSL = $(CONTIKI)/tools/cc2538-bsl/cc2538-bsl.py

### Don't treat the .elf as intermediate
.PRECIOUS: %.elf %.hex %.bin

### Always re-build ieee-addr.o in case the command line passes a new NODEID
FORCE:

$(OBJECTDIR)/ieee-addr.o: ieee-addr.c FORCE | $(OBJECTDIR)
	$(TRACE_CC)
	$(Q)$(CC) $(CFLAGS) -c $< -o $@

### Always re-build ccfg.c so changes to ccfg-conf.h will apply without having
### to make clean first
$(OBJECTDIR)/ccfg.o: ccfg.c FORCE | $(OBJECTDIR)
	$(TRACE_CC)
	$(Q)$(CC) $(CFLAGS) -include "contiki-conf.h" -c $< -o $@

### Compilation rules
CUSTOM_RULE_LINK=1

%.elf: $(TARGET_STARTFILES) %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a $(LDSCRIPT)
	$(TRACE_LD)
	$(Q)$(LD) $(LDFLAGS) ${filter-out $(LDSCRIPT) %.a,$^} ${filter %.a,$^} $(TARGET_LIBFILES) -lm -o $@

%.i16hex: %.elf
	$(OBJCOPY) -O ihex $< $@

%.hex: %.i16hex
	$(SREC_CAT) $< -intel -o $@ -intel

%.bin: %.elf
	$(OBJCOPY) $(OBJCOPY_FLAGS) $< $@

%.lst: %.elf
	$(OBJDUMP) $(OBJDUMP_FLAGS) $< > $@

### We don't really need the .hex and .bin for the .$(TARGET) but let's make
### sure they get built
%.$(TARGET): %.elf %.hex %.bin
	cp $< $@

# a target that gives a user-friendly memory profile, taking into account the RAM
# that is statically occupied by the stack as defined in the linker script
# see $(LDSCRIPT)
RAM_SIZE = 0x00003E00
FLASH_SIZE = 0x0001E000
STACK_SIZE = 0
%.size: %.$(TARGET)
	@$(SIZE) -A $< | egrep "data|bss" | awk '{s+=$$2} END {s=s+$(STACK_SIZE); f=$(RAM_SIZE)-s; printf "[RAM]   used %6d, free %6d\n",s,f;}'
	@$(SIZE) -A $< | egrep "text|isr_vector" | awk '{s+=$$2} END {f=$(FLASH_SIZE)-s; printf "[Flash] used %6d, free %6d\n",s,f;}'

ifeq ($(BOARD_SUPPORTS_BSL),1)
%.upload: %.bin
ifeq ($(wildcard $(BSL)), )
	@echo "ERROR: Could not find the cc2538-bsl script. Did you run 'git submodule update --init' ?"
else
	$(PYTHON) $(BSL) $(BSL_FLAGS) $<
endif
else
%.upload:
	@echo "This board cannot be programmed through the ROM bootloader and therefore does not support the .upload target."
endif

# Check if we are running under Windows
ifeq ($(HOST_OS),Windows)
  SERIALDUMP ?= $(CONTIKI)/tools/sky/serialdump-windows
else
ifeq ($(HOST_OS),Darwin)
  SERIALDUMP ?= $(CONTIKI)/tools/sky/serialdump-macos
else
  # Else assume Linux
  SERIALDUMP ?= $(CONTIKI)/tools/sky/serialdump-linux
endif
endif

UART_BAUDRATE = 115200

login:
	$(SERIALDUMP) -b$(UART_BAUDRATE) $(PORT)