1 .POSIX:
2 
3 CLOCKS = src/clk1.v
4 SRC = ${CLOCKS} src/sdram.v src/cpu.v src/top.v
5 
6 all: ulx3s.bit
7 
8 clean:
9 	rm -f ${CLOCKS} ulx3s.bit ulx3s_out.config design.json
10 
11 flash: ulx3s.bit
12 	fujprog ulx3s.bit
13 
14 flash-rom: ulx3s.bit
15 	fujprog -j FLASH ulx3s.bit
16 
17 ulx3s.bit: ulx3s_out.config
18 	ecppack ulx3s_out.config ulx3s.bit
19 
20 ulx3s_out.config: design.json ulx3s_v20.lpf
21 	nextpnr-ecp5 	--quiet			\
22 			--top=top		\
23 			--85k			\
24 			--json design.json	\
25 			--package CABGA381	\
26 			--lpf ulx3s_v20.lpf	\
27 			--textcfg ulx3s_out.config
28 
29 design.json: ${SRC}
30 	yosys -q -p 'synth_ecp5 -noccu2 -nomux -json design.json' ${SRC}
31 
32 src/clk1.v:
33 	ecppll -i 25 -o 40 -n Clock1 -f $@
34