# TOP           - Name of the top-level module
# DEVICE        - Name of the FPGA device (device-package-speed)
# PRJ           - Name of .prj file with names of all source files. See XST manual.
# BMM           - If design contains initialized memories, softcore MCU, etc., this
#                 file describes mapping of .elf file to these memories. Only one
#                 .bmm file can be used.
# ELF           - File containing initialization data of memories described by
#                 previously defined .bmm file. Format can be .elf or .mem.
# SEARCH_DIRS   - Directories to search when searching for netlists (.ngc, ...).
#                 See NGDBUILD manual.
# JTAG_POS      - Position of device in JTAG chain. Used when downloading bit stream.
# INTSTYLE      - Style of screen output. (ise | xflow | silent)


TOP             = top_counter
DEVICE          = xc2s100-pq208

PRJ		= top_counter.prj

BMM             = 
ELF             = 

SEARCH_DIRS     = 

NGDBUILG_FLAGS  = -aul      # Allow Unmatched LOCs


JTAG_POS        = 2
INTSTYLE        = xflow

# NOTICE: Impact when using in batch mode won't download bitfile to the
# FPGA. Solution I found is to call 'program -p 1' at the end of the
# procedure. See 'download' target.

ifneq (${strip ${BMM}},)
  BITFILE = ${TOP}_rp.bit
else
  BITFILE = ${TOP}.bit
endif

#===============================================================================

.PHONY: all synth ngdbuild map implement download clean

all: clean implement

implement: ${BITFILE}

#===============================================================================

synth ${TOP}.ngc: ${PRJ}
	echo " \
		run \
		${addprefix -ifn ,${PRJ}} \
		-ifmt mixed \
		-ofn ${TOP}.ngc \
		-ofmt NGC \
		-top ${TOP} \
		-p ${DEVICE} \
		-opt_mode Speed \
		-opt_level 1" \
	| xst


ngdbuild ${TOP}.ngd: ${TOP}.ngc ${BMM} ${TOP}.ucf
	ngdbuild \
		${addprefix -bm ,${BMM}} \
		-intstyle ${INTSTYLE} \
		-aul \
		-p ${DEVICE} \
		-uc ${TOP}.ucf \
		${addprefix -sd ,${SEARCH_DIRS}} \
		${TOP}.ngc \
		${TOP}.ngd


map ${TOP}.ncd: ${TOP}.ngd
	map \
		-p ${DEVICE} \
		-intstyle ${INTSTYLE} \
		${TOP}.ngd \
		${TOP}.pcf
	par \
		-w ${TOP}.ncd \
		-intstyle ${INTSTYLE} \
		${TOP}.ncd \
		${TOP}.pcf


${TOP}.bit: ${TOP}.ncd
	bitgen -w ${TOP}.ncd ${TOP}.bit ${TOP}.pcf

${TOP}_rp.bit: ${TOP}.bit ${ELF}
	data2mem -bm ${basename ${BMM}}_bd.bmm -bd ${ELF} -bt ${TOP}.bit -o b ${TOP}_rp.bit

download: ${BITFILE}
	/bin/echo -e "\
	setMode -bscan \n\
	cleancablelock \n\
	setCable -port auto \n\
	identify \n\
	assignFile -p ${JTAG_POS} -file ${BITFILE} \n\
	program -p ${JTAG_POS} \n\
	program -p 1 \n\
	exit" | impact -batch

#===============================================================================

clean:
	rm -f _impactbatch.log
	rm -f ${basename ${BMM}}_bd.bmm
	rm -f netlist.lst
	rm -f ${TOP}.bgn
	rm -f ${TOP}.bit
	rm -f ${TOP}.bld
	rm -f ${TOP}.d
	rm -f ${TOP}.drc
	rm -f ${TOP}.lso
	rm -f ${TOP}.map
	rm -f ${TOP}.mrp
	rm -f ${TOP}.ncd
	rm -f ${TOP}.ngc
	rm -f ${TOP}.ngd
	rm -f ${TOP}.ngm
	rm -f ${TOP}.pad
	rm -f ${TOP}_pad.csv
	rm -f ${TOP}_pad.txt
	rm -f ${TOP}.par
	rm -f ${TOP}.pcf
	rm -f ${TOP}_rp.bit
	rm -f ${TOP}_summary.xml
	rm -f ${TOP}.unroutes
	rm -f ${TOP}_usage.xml
	rm -f ${TOP}.xpi
	rm -rf xst

#===============================================================================

%.d: %.prj
	sed -e 's/#.*//' \
	-e 's/[ \t][ \t]*/ /g' \
	-e 's/"//g' \
	-e 's/^ //' -e 's/ $$//' \
	-e 's|\(.*\) \(.*\) \(.*\)|$<: \3|' \
	<$< >$@

%.prj:
	touch $@

include ${PRJ:.prj=.d}