mem_init.mk

nios中自定义指令集实现三角函数的软件部分。

#########################################################################
#######     M E M   I N I T    M A K E F I L E   C O N T E N T     ######
#########################################################################

#########################################################################
# This file is intended to be included by public.mk
# 
#
# The following variables must be defined before including this file:
# - ELF
#
# The following variables may be defined to override the default behavior:
# - HDL_SIM_DIR
# - HDL_SIM_INSTALL_DIR
# - MEM_INIT_DIR
# - MEM_INIT_INSTALL_DIR
# - QUARTUS_PROJECT_DIR
# - SOPC_NAME
# - SIM_OPTIMIZE
# - RESET_ADDRESS
#
#########################################################################


ELF2DAT = elf2dat
ELF2HEX = elf2hex
ELF2FLASH = elf2flash
FLASH2DAT = flash2dat
NM = nios2-elf-nm

MEM_INIT_DIR ?= mem_init
HDL_SIM_DIR ?= $(MEM_INIT_DIR)/hdl_sim

ifdef QUARTUS_PROJECT_DIR
MEM_INIT_INSTALL_DIR ?= $(QUARTUS_PROJECT_DIR)
ifdef SOPC_NAME
HDL_SIM_INSTALL_DIR ?= $(QUARTUS_PROJECT_DIR)/$(SOPC_NAME)_sim 
endif
endif

#-------------------------------------
# Default Flash Boot Loaders
#-------------------------------------

BOOT_LOADER_PATH ?= $(SOPC_KIT_NIOS2)/components/altera_nios2
BOOT_LOADER_CFI ?= $(BOOT_LOADER_PATH)/boot_loader_cfi.srec
BOOT_LOADER_CFI_BE ?= $(BOOT_LOADER_PATH)/boot_loader_cfi_be.srec
BOOT_LOADER_EPCS ?= $(BOOT_LOADER_PATH)/boot_loader_epcs.srec
BOOT_LOADER_EPCS_BE ?= $(BOOT_LOADER_PATH)/boot_loader_epcs_be.srec
BOOT_LOADER_EPCS_STRATIX_II ?= $(BOOT_LOADER_PATH)/boot_loader_epcs.srec
BOOT_LOADER_EPCS_STRATIX_II_BE ?= $(BOOT_LOADER_PATH)/boot_loader_epcs_be.srec

#-------------------------------------
# Default Target
#-------------------------------------

.PHONY: default_mem_init
default_mem_init: mem_init_install 

#-------------------------------------
# Runtime Macros
#-------------------------------------

define post-process-info
	@echo Post-processing to create $@...
endef

target_stem = $(notdir $(basename $@))

mem_start_address = $($(target_stem)_START)
mem_end_address = $($(target_stem)_END)
mem_width = $($(target_stem)_WIDTH)
mem_create_lanes = $($(target_stem)_CREATE_LANES)

mem_big_endian_flag = $($(target_stem)_BE_FLAG)
mem_pad_flag = $($(target_stem)_PAD_FLAG)
mem_reloc_input_flag = $($(target_stem)_RELOC_INPUT_FLAG)
mem_no_zero_fill_flag = $($(target_stem)_NO_ZERO_FILL_FLAG)

flash_mem_epcs_flag = $($(target_stem)_EPCS_FLAGS)
flash_mem_cfi_flag = $($(target_stem)_CFI_FLAGS)
flash_mem_boot_loader_flag = $($(target_stem)_BOOT_LOADER_FLAG)

elf2dat_extra_args = $(mem_big_endian_flag) $(mem_pad_flag)
elf2hex_extra_args = $(mem_big_endian_flag) $(mem_no_zero_fill_flag)
elf2flash_extra_args = $(flash_mem_cfi_flag) $(flash_mem_epcs_flag) $(flash_mem_boot_loader_flag)
flash2dat_extra_args = $(mem_big_endian_flag) $(mem_pad_flag) $(mem_reloc_input_flag)

meminit_mkdirs_deps = $(MEM_INIT_DIR) $(HDL_SIM_DIR)
meminit_mkinstalldirs_deps = $(MEM_INIT_INSTALL_DIR) $(HDL_SIM_INSTALL_DIR)

#------------------------------------------------------------------------------
#                              BSP SPECIFIC CONTENT
#
# The content below is controlled by the BSP and SOPC System
#------------------------------------------------------------------------------
#START OF BSP SPECIFIC

#-------------------------------------
# Global Settings
#-------------------------------------

# Optimize for simulation
SIM_OPTIMIZE ?= 0

# The CPU reset address as needed by elf2flash
RESET_ADDRESS ?= 0x06000000

#-------------------------------------
# Pre-Initialized Memory Descriptions
#-------------------------------------

# Memory: altmemddr
MEM_0 := altmemddr
DAT_FILES += $(HDL_SIM_DIR)/$(MEM_0).dat
SYM_FILES += $(HDL_SIM_DIR)/$(MEM_0).sym
$(MEM_0)_START := 0x02000000
$(MEM_0)_END := 0x03ffffff
$(MEM_0)_WIDTH := 32
$(MEM_0)_CREATE_LANES := 0

.PHONY: altmemddr
altmemddr: check_elf_exists $(meminit_mkdirs_deps) $(HDL_SIM_DIR)/$(MEM_0).dat $(HDL_SIM_DIR)/$(MEM_0).sym

# Memory: ext_flash
MEM_1 := ext_flash
DAT_FILES += $(HDL_SIM_DIR)/$(MEM_1).dat
SYM_FILES += $(HDL_SIM_DIR)/$(MEM_1).sym
FLASH_FILES += $(MEM_1).flash
$(MEM_1)_START := 0x06000000
$(MEM_1)_END := 0x06ffffff
$(MEM_1)_WIDTH := 16
$(MEM_1)_CREATE_LANES := 1
$(MEM_1)_CFI_FLAGS := --base=$($(MEM_1)_START) --end=$($(MEM_1)_END) --reset=$(RESET_ADDRESS)
$(MEM_1)_BOOT_LOADER_FLAG := --boot="$(BOOT_LOADER_CFI)"

$(HDL_SIM_DIR)/$(MEM_1).dat: $(MEM_1).flash
	$(post-process-info)
	$(FLASH2DAT) --infile=$< --outfile=$@ \
		--base=$(mem_start_address) --end=$(mem_end_address) --width=$(mem_width) \
		--create-lanes=$(mem_create_lanes) $(flash2dat_extra_args)


.PHONY: ext_flash
ext_flash: check_elf_exists $(meminit_mkdirs_deps) $(HDL_SIM_DIR)/$(MEM_1).dat $(HDL_SIM_DIR)/$(MEM_1).sym $(MEM_1).flash

# Memory: ext_ssram
MEM_2 := ext_ssram
DAT_FILES += $(HDL_SIM_DIR)/$(MEM_2).dat
SYM_FILES += $(HDL_SIM_DIR)/$(MEM_2).sym
$(MEM_2)_START := 0x07000000
$(MEM_2)_END := 0x070fffff
$(MEM_2)_WIDTH := 32
$(MEM_2)_CREATE_LANES := 1

.PHONY: ext_ssram
ext_ssram: check_elf_exists $(meminit_mkdirs_deps) $(HDL_SIM_DIR)/$(MEM_2).dat $(HDL_SIM_DIR)/$(MEM_2).sym

# Memory: onchip_ram
MEM_3 := onchip_ram
HEX_FILES += $(MEM_INIT_DIR)/$(MEM_3).hex
DAT_FILES += $(HDL_SIM_DIR)/$(MEM_3).dat
SYM_FILES += $(HDL_SIM_DIR)/$(MEM_3).sym
$(MEM_3)_START := 0x09010000
$(MEM_3)_END := 0x09017fff
$(MEM_3)_WIDTH := 32
$(MEM_3)_CREATE_LANES := 0

.PHONY: onchip_ram
onchip_ram: check_elf_exists $(meminit_mkdirs_deps) $(MEM_INIT_DIR)/$(MEM_3).hex $(HDL_SIM_DIR)/$(MEM_3).dat $(HDL_SIM_DIR)/$(MEM_3).sym


#END OF BSP SPECIFIC

#-------------------------------------
# Pre-Initialized Memory Targets
#-------------------------------------

.PHONY: mem_init_install mem_init_generate mem_init_clean

mem_init_install: $(meminit_mkinstalldirs_deps) mem_init_generate
	@if [ -n "$(wildcard $(MEM_INIT_DIR)/*.*)" ]; then \
		if [ -n "$(MEM_INIT_INSTALL_DIR)" ]; then \
			cp -uv $(wildcard $(MEM_INIT_DIR)/*.*) $(MEM_INIT_INSTALL_DIR); \
		else \
			echo "WARNING: MEM_INIT_INSTALL_DIR not set. Set your QUARTUS_PROJECT_DIR environment variable."; \
		fi; \
	fi
	@if [ -n "$(wildcard $(HDL_SIM_DIR)/*.*)" ]; then \
		if [ -n "$(HDL_SIM_INSTALL_DIR)" ]; then \
			cp -uv $(wildcard $(HDL_SIM_DIR)/*.*) $(HDL_SIM_INSTALL_DIR); \
		else \
			echo "WARNING: HDL_SIM_INSTALL_DIR not set. Set your QUARTUS_PROJECT_DIR and SOPC_NAME environment variables."; \
		fi; \
	fi

mem_init_generate: hex dat sym flash

mem_init_clean:
	$(RM) $(HEX_FILES) $(DAT_FILES) $(FLASH_FILES) $(SYM_FILES) $(wildcard $(MEM_INIT_DIR)/*.*) $(wildcard $(HDL_SIM_DIR)/*.*)

.PHONY: hex dat sym flash

hex: check_elf_exists $(meminit_mkdirs_deps) $(HEX_FILES)

dat: check_elf_exists $(meminit_mkdirs_deps) $(DAT_FILES)

sym: check_elf_exists $(meminit_mkdirs_deps) $(SYM_FILES)

flash: check_elf_exists $(meminit_mkdirs_deps) $(FLASH_FILES)

#-------------------------------------
# Pre-Initialized Memory Rules
#-------------------------------------

.PHONY: check_elf_exists
check_elf_exists: $(ELF)
ifeq ($(ELF),)
	$(error ELF var not set in mem_init.mk)
endif

$(HDL_SIM_DIR):
	@if [ ! -d $(HDL_SIM_DIR) ]; then mkdir -p $(HDL_SIM_DIR) ; fi

$(MEM_INIT_DIR):
	@if [ ! -d $(MEM_INIT_DIR) ]; then mkdir -p $(MEM_INIT_DIR) ; fi

$(HDL_SIM_INSTALL_DIR):
	@if [ ! -d $(HDL_SIM_INSTALL_DIR) ]; then mkdir -p $(HDL_SIM_INSTALL_DIR) ; fi

$(MEM_INIT_INSTALL_DIR):
	@if [ ! -d $(MEM_INIT_INSTALL_DIR) ]; then mkdir -p $(MEM_INIT_INSTALL_DIR) ; fi

%.dat: $(ELF)
	$(post-process-info)
	$(ELF2DAT) --infile=$(ELF) --outfile=$@ \
		--base=$(mem_start_address) --end=$(mem_end_address) --width=$(mem_width) \
		--create-lanes=$(mem_create_lanes) $(elf2dat_extra_args)

%.hex: $(ELF)
	$(post-process-info)
	$(ELF2HEX) $(ELF) $(mem_start_address) $(mem_end_address) --width=$(mem_width) \
		--create-lanes=$(mem_create_lanes) $(elf2hex_extra_args) $@

%.sym: $(ELF)
	$(post-process-info)
	$(NM) -n $(ELF) > $@

%.flash: $(ELF)
	$(post-process-info)
	$(ELF2FLASH) --input=$(ELF) --outfile=$@ --sim_optimize=$(SIM_OPTIMIZE) $(elf2flash_extra_args)