# Hey Emacs, this is a -*- makefile -*-
##############################################################################
# Architecture or project specific options
#

# Stack size to be allocated to the Cortex-M process stack. This stack is
# the stack used by the main() thread.
ifeq ($(USE_PROCESS_STACKSIZE),)
  USE_PROCESS_STACKSIZE = 0x200
endif

# Stack size to the allocated to the Cortex-M main/exceptions stack. This
# stack is used for processing interrupts and exceptions.
ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
  USE_EXCEPTIONS_STACKSIZE = 0x400
endif

#
# Architecture or project specific options
##############################################################################

##############################################################################
# Project, sources and paths
#

# Imported source files and paths
CHIBIOS = $(TOP_DIR)/lib/chibios
CHIBIOS_CONTRIB = $(TOP_DIR)/lib/chibios-contrib
# Startup files. Try a few different locations, for compability with old versions and 
# for things hardware in the contrib repository
STARTUP_MK = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
ifeq ("$(wildcard $(STARTUP_MK))","")
	STARTUP_MK = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
	ifeq ("$(wildcard $(STARTUP_MK))","")
		STARTUP_MK = $(CHIBIOS_CONTRIB)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
	endif
endif
include $(STARTUP_MK)
# HAL-OSAL files (optional).
include $(CHIBIOS)/os/hal/hal.mk

PLATFORM_MK = $(CHIBIOS)/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)/platform.mk
ifeq ("$(wildcard $(PLATFORM_MK))","")
PLATFORM_MK = $(CHIBIOS_CONTRIB)/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)/platform.mk
endif
include $(PLATFORM_MK)


BOARD_MK = $(KEYBOARD_PATH)/boards/$(BOARD)/board.mk
ifeq ("$(wildcard $(BOARD_MK))","")
	BOARD_MK = $(CHIBIOS)/os/hal/boards/$(BOARD)/board.mk
	ifeq ("$(wildcard $(BOARD_MK))","")
		BOARD_MK = $(CHIBIOS_CONTRIB)/os/hal/boards/$(BOARD)/board.mk
	endif
endif
include $(BOARD_MK)
include $(CHIBIOS)/os/hal/osal/rt/osal.mk
# RTOS files (optional).
include $(CHIBIOS)/os/rt/rt.mk
# Compability with old version
PORT_V = $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC/mk/port_v$(ARMV)m.mk
ifeq ("$(wildcard $(PORT_V))","")
PORT_V = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/port_v$(ARMV)m.mk
endif
include $(PORT_V)
# Other files (optional).
include $(CHIBIOS)/os/hal/lib/streams/streams.mk

RULESPATH = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC
ifeq ("$(wildcard $(RULESPATH)/rules.mk)","")
RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC
endif

# Define linker script file here
ifneq ("$(wildcard $(KEYBOARD_PATH)/ld/$(MCU_LDSCRIPT).ld)","")
LDSCRIPT = $(KEYBOARD_PATH)/ld/$(MCU_LDSCRIPT).ld
else
LDSCRIPT = $(STARTUPLD)/$(MCU_LDSCRIPT).ld
endif

CHIBISRC = $(STARTUPSRC) \
       $(KERNSRC) \
       $(PORTSRC) \
       $(OSALSRC) \
       $(HALSRC) \
       $(PLATFORMSRC) \
       $(BOARDSRC) \
       $(STREAMSSRC) \
	   $(STARTUPASM) \
	   $(PORTASM) \
	   $(OSALASM)         

CHIBISRC := $(patsubst $(TOP_DIR)/%,%,$(CHIBISRC))
	   
EXTRAINCDIRS += $(CHIBIOS)/os/license \
         $(STARTUPINC) $(KERNINC) $(PORTINC) $(OSALINC) \
         $(HALINC) $(PLATFORMINC) $(BOARDINC) $(TESTINC) \
         $(STREAMSINC) $(CHIBIOS)/os/various 

#
# Project, sources and paths
##############################################################################


##############################################################################
# Compiler settings
#
CC = arm-none-eabi-gcc
OBJCOPY = arm-none-eabi-objcopy
OBJDUMP = arm-none-eabi-objdump
SIZE = arm-none-eabi-size
AR = arm-none-eabi-ar
NM = arm-none-eabi-nm
HEX = $(OBJCOPY) -O $(FORMAT)
EEP = 
BIN = $(OBJCOPY) -O binary

THUMBFLAGS = -DTHUMB_PRESENT -mno-thumb-interwork -DTHUMB_NO_INTERWORKING -mthumb -DTHUMB 

COMPILEFLAGS += -fomit-frame-pointer 
COMPILEFLAGS += -falign-functions=16
COMPILEFLAGS += -ffunction-sections
COMPILEFLAGS += -fdata-sections
COMPILEFLAGS += -fno-common
COMPILEFLAGS += $(THUMBFLAGS) 

CFLAGS += $(COMPILEFLAGS)

ASFLAGS += $(THUMBFLAGS)

CPPFLAGS += $(COMPILEFLAGS)
CPPFLAGS += -fno-rtti

LDFLAGS +=-Wl,--gc-sections
LDFLAGS += -mno-thumb-interwork -mthumb
LDSYMBOLS =,--defsym=__process_stack_size__=$(USE_PROCESS_STACKSIZE)
LDSYMBOLS :=$(LDSYMBOLS),--defsym=__main_stack_size__=$(USE_EXCEPTIONS_STACKSIZE)
LDFLAGS += -Wl,--script=$(LDSCRIPT)$(LDSYMBOLS)

OPT_DEFS += -DPROTOCOL_CHIBIOS

MCUFLAGS = -mcpu=$(MCU)

DEBUG = gdb

DFU_ARGS ?=
ifneq ("$(SERIAL)","")
	DFU_ARGS += -S $(SERIAL)
endif

# List any extra directories to look for libraries here.
EXTRALIBDIRS = $(RULESPATH)/ld

DFU_UTIL ?= dfu-util

dfu-util: $(BUILD_DIR)/$(TARGET).bin sizeafter
	$(DFU_UTIL) $(DFU_ARGS) -D $(BUILD_DIR)/$(TARGET).bin