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ifndef _BRAM_MK
_BRAM_MK := # defined
BRAM_ADDR := 0x1000
BASEDIR := $(dir $(lastword $(MAKEFILE_LIST)))
BASEDIR := $(BASEDIR:/=)
DATADIR := $(BASEDIR)/common
LDSCRIPT := $(DATADIR)/bram.ld
MEMSCRIPT := $(DATADIR)/mem.awk
BITFILEDIR := $(BASEDIR)/../bitfile
BITFILE_VERSION ?= 0-1
BITFILE := $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION).bit
CFGFILE := $(BITFILEDIR)/FreedomE-$(BITFILE_VERSION).cfg
MEMINFO := $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION).mmi
BRAM_INST := `cat $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION)-bootrom.txt`
XLEN = 32
BRAM_WIDTH=64
all: mcs
$(BITFILE):
@echo "In order to get Version $(BITFILE_VERSION) of the bitfile:"
@echo ""
@cat $(BITFILEDIR)/README.md
CC := ../../toolchain/bin/riscv$(XLEN)-unknown-elf-gcc
UPDATEMEM ?= updatemem
CDEFINES += -DCFG_STRING=\"$(CFGFILE)\"
CFLAGS ?= -m$(XLEN) -O2 -std=c11 -pedantic -Wall \
-nostartfiles -fno-common -mcmodel=medany -g \
$(CDEFINES)
LDFLAGS ?= -T$(LDSCRIPT) -static -nostdlib
OBJCOPY ?= objcopy
elf: $(PROG).elf
hex: $(PROG).hex
mem: $(PROG).impl.mem
mcs: $(PROG).mcs
$(PROG).elf: $(SRCS) $(EXTRAS) $(CFGFILE)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(SRCS)
$(PROG).hex: $(PROG).elf
$(OBJCOPY) -S -O verilog --change-addresses -$(BRAM_ADDR) $< $@
# Manually reverse the byte order due to limitations in UpdateMEM.
# Per UG898: "When UpdateMEM inputs data, it takes data from data input
# files in Bit Lane sized chunks from the most right value first to the
# left most. For example, if the first 64 bits of input data are
# 0xB47DDE02826A8419 then the value 0xB4 is the first value to be set
# into a Block RAM."
$(PROG).impl.mem: $(PROG).hex $(MEMSCRIPT)
awk -v WIDTH=$(BRAM_WIDTH) -v REVERSE=1 -f $(MEMSCRIPT) $< > $@
.PHONY: $(PROG).mcs
$(PROG).mcs : $(BITFILE) $(PROG).impl.mem
@echo ""
@echo ""
@echo "TO COMPLETE THE BUILD OF $(PROG).mcs, "
@echo "ENTER THE FOLLOWING IN THE VIVADO TCL WINDOW:"
@echo ""
@echo "cd `pwd`"
@echo ""
@echo "exec $(UPDATEMEM) -meminfo $(MEMINFO) -data $(PROG).impl.mem -proc $(BRAM_INST) -bit $(BITFILE) --out $(PROG).bit -force"
@echo ""
@echo "write_cfgmem -format mcs -interface spix4 -size 16 -loadbit {up 0x0 $(PROG).bit} -file $(PROG).mcs -force"
@echo ""
clean:
rm -f -- $(foreach ext,elf hex impl.mem bit mcs,$(PROG).$(ext))
endif # _BRAM_MK
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