defs.makefile

#//-----------------------------------------------------------------------------
#// NanoSoC Software Build Defs Makefile
#// A joint work commissioned on behalf of SoC Labs, under Arm Academic Access license.
#//
#// Contributors
#//
#// David Mapstone (d.a.mapstone@soton.ac.uk)
#//
#// Copyright � 2021-3, SoC Labs (www.soclabs.org)
#//-----------------------------------------------------------------------------

# Program file
SOFTWARE_NAME    ?= bootloader

include $(SOFTWARE_NAME)/$(SOFTWARE_NAME)_defs.makefile

# Choose the core instantiated, can be
#  - CORTEX_M0
CPU_PRODUCT = CORTEX_M0

TARGET = arm-none-eabi

# Tool chain : ds6 / ds5 / gcc / keil
TOOL_CHAIN     ?= ds5

# Shared software directory
SOFTWARE_DIR = $(NANOSOC_TECH_DIR)/software
CMSIS_DIR    = $(SOFTWARE_DIR)/cmsis
CORE_DIR     = $(CMSIS_DIR)/CMSIS/Include

DEVICE_DIR    = $(CMSIS_DIR)/Device/ARM/CMSDK_CM0
USER_DEFINE   = -DCORTEX_M0

ifeq ($(TOOL_CHAIN),ds5)
  CPU_TYPE      = --cpu Cortex-M0
endif

ifeq ($(TOOL_CHAIN),ds6)
  CPU_TYPE        = -mcpu=Cortex-M0
endif

ifeq ($(TOOL_CHAIN),gcc)
  CPU_TYPE        = -mcpu=cortex-m0
endif


# Endian Option
COMPILE_BIGEND = 0

DEPS_LIST       = makefile

# Startup code directory for Development Studio
ifeq ($(TOOL_CHAIN),ds5)
 STARTUP_DIR  = $(DEVICE_DIR)/Source/ARM
endif

ifeq ($(TOOL_CHAIN),ds6)
 STARTUP_DIR  = $(DEVICE_DIR)/Source/ARM
endif

# Startup code directory for gcc
ifeq ($(TOOL_CHAIN),gcc)
 STARTUP_DIR  = $(DEVICE_DIR)/Source/GCC
endif

STARTUP_FILE = startup_CMSDK_CM0
SYSTEM_FILE  = system_CMSDK_CM0

# ---------------------------------------------------------------------------------------
# Development Studio options

# MicroLIB option
COMPILE_MICROLIB = 0

# Small Multiply (Cortex-M0/M0+ has small multiplier option)
COMPILE_SMALLMUL = 0

# C and ASM Compiler Tool Setup - use armcc and armasm for ds-5 and armclang for ds-6
ifeq ($(TOOL_CHAIN),ds5)
  CC_TOOL   = armcc
  ASM_TOOL = armasm
  ARM_TARGET = -Otime
endif

ifeq ($(TOOL_CHAIN),ds6)
  ARM_TARGET = --target=arm-$(TARGET)
  CC_TOOL   = armclang
  ASM_TOOL = armclang -masm=armasm $(ARM_TARGET) -c
endif

ARM_CC_OPTIONS   = $(ARM_TARGET) -c -O3 -g -I $(DEVICE_DIR)/Include -I $(CORE_DIR) $(USER_DEFINE)

ARM_ASM_OPTIONS  = -g
ARM_LINK_OPTIONS = "--keep=$(STARTUP_FILE).o(RESET)" "--first=$(STARTUP_FILE).o(RESET)" \
		--rw_base 0x30000000 --ro_base 0x10000000 --map

ifeq ($(COMPILE_BIGEND),1)
 # Big Endian
 ARM_CC_OPTIONS   += --bigend
 ARM_ASM_OPTIONS  += --bigend
 ARM_LINK_OPTIONS += --be8
endif

ifeq ($(COMPILE_MICROLIB),1)
 # MicroLIB
 ARM_CC_OPTIONS   += --library_type=microlib
 ARM_ASM_OPTIONS  += --library_type=microlib --pd "__MICROLIB SETA 1"
 ARM_LINK_OPTIONS += --library_type=microlib
endif

ifeq ($(COMPILE_SMALLMUL),1)
 # In Cortex-M0, small multiply takes 32 cycles
 ARM_CC_OPTIONS  += --multiply_latency=32
endif

# ---------------------------------------------------------------------------------------
# gcc options

GNG_CC      = $(TARGET)-gcc
GNU_OBJDUMP = $(TARGET)-objdump
GNU_OBJCOPY = $(TARGET)-objcopy

LINKER_NAME        ?= cmsdk_cm0
LINKER_SCRIPT_PATH  = $(SOFTWARE_DIR)/common/scripts
LINKER_SCRIPT       = $(LINKER_SCRIPT_PATH)/$(LINKER_NAME).ld

GNU_CC_FLAGS = -g -O3 -mthumb $(CPU_TYPE)

ifeq ($(COMPILE_BIGEND),1)
 # Big Endian
 GNU_CC_FLAGS   += -mbig-endian
endif
# ---------------------------------------------------------------------------------------