Subversion Repositories neorv32

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# << NEORV32 - Application Makefile >>                                                          #

# ********************************************************************************************* #

# Make sure to add the riscv GCC compiler's bin folder to your PATH environment variable.       #

# ********************************************************************************************* #

# BSD 3-Clause License                                                                          #

#                                                                                               #

# Copyright (c) 2020, Stephan Nolting. All rights reserved.                                     #

#                                                                                               #

# Redistribution and use in source and binary forms, with or without modification, are          #

# permitted provided that the following conditions are met:                                     #

#                                                                                               #

# 1. Redistributions of source code must retain the above copyright notice, this list of        #

#    conditions and the following disclaimer.                                                   #

#                                                                                               #

# 2. Redistributions in binary form must reproduce the above copyright notice, this list of     #

#    conditions and the following disclaimer in the documentation and/or other materials        #

#    provided with the distribution.                                                            #

#                                                                                               #

# 3. Neither the name of the copyright holder nor the names of its contributors may be used to  #

#    endorse or promote products derived from this software without specific prior written      #

#    permission.                                                                                #

#                                                                                               #

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS   #

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF               #

# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE    #

# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,     #

# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #

# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED    #

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING     #

# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED  #

# OF THE POSSIBILITY OF SUCH DAMAGE.                                                            #

# ********************************************************************************************* #

# The NEORV32 Processor - https://github.com/stnolting/neorv32              (c) Stephan Nolting #

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# *****************************************************************************

# USER CONFIGURATION

# *****************************************************************************

# Compiler effort

EFFORT = -Os

# User's application sources (add additional files here)

APP_SRC = $(wildcard *.c)

# User's application include folders (don't forget the '-I' before each entry)

APP_INC = -I .

# Compiler toolchain (use default if not set by user)

RISCV_TOOLCHAIN ?= riscv32-unknown-elf

# CPU architecture and ABI

MARCH = -march=rv32i

MABI  = -mabi=ilp32

# Path to runtime c library (use default if not set by user)

LIBC_PATH   ?= $(dir $(shell which $(CC)))../$(RISCV_TOOLCHAIN)/lib/libc.a

LIBGCC_PATH ?= $(dir $(shell which $(CC)))../lib/gcc/$(RISCV_TOOLCHAIN)/*/libgcc.a

# Relative or absolute path to the NEORV32 home folder (use default if not set by user)

NEORV32_HOME ?= ../../..

# *****************************************************************************

# -----------------------------------------------------------------------------

# NEORV32 framework

# -----------------------------------------------------------------------------

# Path to NEORV32 linker script and startup file

NEORV32_COM_PATH=$(NEORV32_HOME)/sw/common

# Path to main NEORV32 library include files

NEORV32_INC_PATH=$(NEORV32_HOME)/sw/lib/include

# Path to main NEORV32 library source files

NEORV32_SRC_PATH=$(NEORV32_HOME)/sw/lib/source

# Path to NEORV32 executable generator

NEORV32_EXG_PATH=$(NEORV32_HOME)/sw/image_gen

# Path to NEORV32 core rtl folder

NEORV32_RTL_PATH=$(NEORV32_HOME)/rtl/core

# Marker file to verify NEORV32 home folder

NEORV32_HOME_MARKER=$(NEORV32_INC_PATH)/neorv32.h

# -----------------------------------------------------------------------------

# NEORV32 core sources

# -----------------------------------------------------------------------------

CORE_SRC = $(wildcard $(NEORV32_SRC_PATH)/*.c)

# -----------------------------------------------------------------------------

# Make defaults

# -----------------------------------------------------------------------------

.DEFAULT_GOAL := help

# -----------------------------------------------------------------------------

# Application output definitions

# -----------------------------------------------------------------------------

APP_EXE = neorv32_exe.bin

APP_ASM = main.s

compile: $(APP_ASM) $(APP_EXE)

install: $(APP_ASM) neorv32_application_image.vhd

all:     $(APP_ASM) $(APP_EXE) neorv32_application_image.vhd

# define all object files

OBJ  = $(APP_SRC:.c=.o)

OBJ += $(CORE_SRC:.c=.o)

# -----------------------------------------------------------------------------

# Tools and flags

# -----------------------------------------------------------------------------

# compiler tools

CC      = $(RISCV_TOOLCHAIN)-gcc

LD      = $(RISCV_TOOLCHAIN)-ld

OBJDUMP = $(RISCV_TOOLCHAIN)-objdump

OBJCOPY = $(RISCV_TOOLCHAIN)-objcopy

SIZE    = $(RISCV_TOOLCHAIN)-size

# NEORV32 executable image generator

IMAGE_GEN = $(NEORV32_EXG_PATH)/image_gen

# Compiler flags

CC_OPTS = $(MARCH) $(MABI) $(EFFORT) -Wall -ffunction-sections -fdata-sections -lm

# Linker flags

LD_OPTS = $(EFFORT) --gc-sections

# User flags for additional config

USER_FLAGS =

CC_OPTS += $(USER_FLAGS)

# Use embedded RISC-V CPU extension?

ifeq (,$(findstring rv32e,$(MARCH)))

        CC_OPTS +=

else

        CC_OPTS += -D__RISCV_EMBEDDED_CPU__

endif

# -----------------------------------------------------------------------------

# Host native compiler

# -----------------------------------------------------------------------------

CC_X86 = gcc -Wall -O -g

# -----------------------------------------------------------------------------

# Tool targets

# -----------------------------------------------------------------------------

# install/compile tools

$(IMAGE_GEN): $(NEORV32_EXG_PATH)/image_gen.cpp

        @echo Compiling $(IMAGE_GEN)

        @$(CC_X86) $< -o $(IMAGE_GEN)

# -----------------------------------------------------------------------------

# Application targets: Assemble, compile, link, dump

# -----------------------------------------------------------------------------

# Assemble startup code

crt0.elf: $(NEORV32_COM_PATH)/crt0.S

        @$(CC) $(CC_OPTS) -c $< -o $@

# Compile app sources

$(OBJ): %.o : %.c crt0.elf

        @$(CC) -c $(CC_OPTS) -I $(NEORV32_INC_PATH) $(APP_INC) $< -o $@

# Link object files and show memory utilization

main.elf: $(OBJ)

        @$(LD) $(LD_OPTS) -I $(NEORV32_INC_PATH) $(APP_INC) -T $(NEORV32_COM_PATH)/neorv32.ld $(OBJ) $(LIBC_PATH) $(LIBGCC_PATH) -o $@

        @echo "Memory utilization:"

        @$(SIZE) main.elf

# Assembly listing file (for debugging)

$(APP_ASM): main.elf

        @$(OBJDUMP) -D -S -z  $< > $@

# -----------------------------------------------------------------------------

# Application targets: Generate binary executable, install (as VHDL file)

# -----------------------------------------------------------------------------

# Generate final executable: text, rodata, data (in THIS order!)

main.bin: main.elf

        @$(OBJCOPY) -I elf32-little $< -j .text   -O binary text.bin

        @$(OBJCOPY) -I elf32-little $< -j .rodata -O binary rodata.bin

        @$(OBJCOPY) -I elf32-little $< -j .data   -O binary data.bin

        @cat text.bin rodata.bin data.bin > $@

        @rm -f text.bin rodata.bin data.bin

# Generate NEORV32 executable image for bootloader update

$(APP_EXE): main.bin $(IMAGE_GEN)

        @set -e

        @$(IMAGE_GEN) -app_bin $< $@ $(shell basename $(CURDIR))

        @echo "Executable ($(APP_EXE)) size in bytes:"

        @wc -c < $(APP_EXE)

# Generate NEORV32 executable VHDL boot image

neorv32_application_image.vhd: main.bin $(IMAGE_GEN)

        @set -e

        @$(IMAGE_GEN) -app_img $< $@ $(shell basename $(CURDIR))

        @echo "Installing application image to $(NEORV32_RTL_PATH)/neorv32_application_image.vhd"

        @cp neorv32_application_image.vhd $(NEORV32_RTL_PATH)/.

        @rm -f neorv32_application_image.vhd

# -----------------------------------------------------------------------------

# Bootloader targets

# -----------------------------------------------------------------------------

# Assemble startup code

bootloader_crt0.elf: $(NEORV32_COM_PATH)/bootloader_crt0.S

        @$(CC) $(CC_OPTS) -c $< -o $@

# Compile and install bootloader

bootloader: bootloader_crt0.elf $(OBJ) $(IMAGE_GEN)

        @set -e

        @$(LD) $(LD_OPTS) -I $(NEORV32_INC_PATH) $(APP_INC) -T $(NEORV32_COM_PATH)/bootloader_neorv32.ld $(OBJ) $(LIBC_PATH) $(LIBGCC_PATH) -o bootloader.elf

        @echo "Memory utilization:"

        @$(SIZE) bootloader.elf

        @$(OBJDUMP) -D -S -z bootloader.elf > bootloader.s

        @$(OBJCOPY) -I elf32-little bootloader.elf -j .text   -O binary text.bin

        @$(OBJCOPY) -I elf32-little bootloader.elf -j .rodata -O binary rodata.bin

        @$(OBJCOPY) -I elf32-little bootloader.elf -j .data   -O binary data.bin

        @cat text.bin rodata.bin data.bin > bootloader.bin

        @$(IMAGE_GEN) -bld_img bootloader.bin neorv32_bootloader_image.vhd $(shell basename $(CURDIR))

        @echo "Installing bootloader image to $(NEORV32_RTL_PATH)/neorv32_bootloader_image.vhd"

        @cp neorv32_bootloader_image.vhd $(NEORV32_RTL_PATH)/.

        @rm -f neorv32_bootloader_image.vhd text.bin rodata.bin data.bin

# -----------------------------------------------------------------------------

# Check toolchain

# -----------------------------------------------------------------------------

check: $(IMAGE_GEN)

        @echo "---------------- Check: NEORV32_HOME folder ----------------"

ifneq ($(shell [ -e $(NEORV32_HOME_MARKER) ] && echo 1 || echo 0 ), 1)

$(error NEORV32_HOME folder not found!)

endif

        @echo "NEORV32_HOME: $(NEORV32_HOME)"

        @echo "---------------- Check: $(CC) ----------------"

        @$(CC) -v

        @echo "---------------- Check: $(LD) ----------------"

        @$(LD) -V

        @echo "---------------- Check: $(OBJDUMP) ----------------"

        @$(OBJDUMP) -V

        @echo "---------------- Check: $(OBJCOPY) ----------------"

        @$(OBJCOPY) -V

        @echo "---------------- Check: $(SIZE) ----------------"

        @$(SIZE) -V

        @echo "---------------- Check: NEORV32 image_gen ----------------"

        @$(IMAGE_GEN) -help

        @echo "---------------- Check: native gcc ----------------"

        @$(CC_X86) -v

        @echo

        @echo "Toolchain check OK"

# -----------------------------------------------------------------------------

# Show configuration

# -----------------------------------------------------------------------------

info:

        @echo "---------------- Info: Project ----------------"

        @echo "Project folder:    $(shell basename $(CURDIR))"

        @echo "Source files:      $(APP_SRC)"

        @echo "Include folder(s): $(APP_INC)"

        @echo "---------------- Info: NEORV32 ----------------"

        @echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"

        @echo "IMAGE_GEN: $(IMAGE_GEN)"

        @echo "Core source files:"

        @echo "$(CORE_SRC)"

        @echo "Core include folder:"

        @echo "$(NEORV32_INC_PATH)"

        @echo "Project object files:"

        @echo "$(OBJ)"

        @echo "---------------- Info: RISC-V CPU ----------------"

        @echo "MARCH:     $(MARCH)"

        @echo "MABI:      $(MABI)"

        @echo "---------------- Info: RISC-V Toolchain ----------------"

        @echo "Toolchain: $(RISCV_TOLLCHAIN)"

        @echo "CC:        $(CC)"

        @echo "LD:        $(LD)"

        @echo "OBJDUMP:   $(OBJDUMP)"

        @echo "OBJCOPY:   $(OBJCOPY)"

        @echo "SIZE:      $(SIZE)"

        @echo "---------------- Info: C Lib ----------------"

        @echo "CLIB:      $(LIBC_PATH)"

        @echo "GCCLIB:    $(LIBGCC_PATH)"

        @echo "---------------- Info: Flags ----------------"

        @echo "CC_OPTS:   $(CC_OPTS)"

        @echo "LD_OPTS:   $(LD_OPTS)"

        @echo "---------------- Info: Host Native GCC ----------------"

        @echo "CC_X86:    $(CC_X86)"

# -----------------------------------------------------------------------------

# Show final ELF details (just for debugging)

# -----------------------------------------------------------------------------

elf_info: main.elf

        @$(OBJDUMP) -x main.elf

# -----------------------------------------------------------------------------

# Help

# -----------------------------------------------------------------------------

help:

        @echo "<<< NEORV32 Application Makefile >>>"

        @echo "Make sure to add the bin folder of RISC-V GCC to your PATH variable."

        @echo "Targets:"

        @echo " help       - show this text"

        @echo " check      - check toolchain"

        @echo " info       - show makefile/toolchain configuration"

        @echo " compile    - compile and generate  executable for upload via bootloader"

        @echo " install    - compile, generate and install VHDL IMEM boot image"

        @echo " all        - compile and generate  executable for upload via bootloader and generate and install VHDL IMEM boot image"

        @echo " clean      - clean up project"

        @echo " clean_all  - clean up project, core libraries and image generator"

        @echo " bootloader - compile, generate and install VHDL BOOTROM bott image (for bootloader only!)"

# -----------------------------------------------------------------------------

# Clean up

# -----------------------------------------------------------------------------

clean:

        @rm -f *.elf *.o *.bin *.out *.s

clean_all: clean

        @rm -f $(OBJ) $(IMAGE_GEN)