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       = 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

### Are we building with code size optimisations?
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 += symbols.c symbols.h *.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 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
CONTIKI_CPU_SOURCEFILES += putchar.c ieee-addr.c batmon-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

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)))

### 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 $@

### 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;}'