Makefile: Add a target for the Orange Crab v0.21 with LFE5U-85F

The existing orange crab target is for an older board with a
LFE5UM5G-85F device.  Newer orange crab boards (v0.21) have a
LFE5U-85F device in the -8 speed grade, so make a new target for them
called ORANGE-CRAB-0.21.

Also add flags to ecppack to indicate that the bitstream should be
compressed and can be loaded at 38.8MHz.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
fpu-constant
Paul Mackerras 2 years ago
parent 9cbe1f4a17
commit a5c9b3c412

@ -154,7 +154,7 @@ FPGA_TARGET ?= ORANGE-CRAB
# with yosys, so make it smaller for now as a workaround.
ICACHE_NUM_LINES=4

# OrangeCrab with ECP85
# OrangeCrab with ECP85 (original v0.0 with UM5G-85 chip)
ifeq ($(FPGA_TARGET), ORANGE-CRAB)
RESET_LOW=true
CLK_INPUT=48000000
@ -166,6 +166,18 @@ OPENOCD_JTAG_CONFIG=openocd/olimex-arm-usb-tiny-h.cfg
OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg
endif

# OrangeCrab with ECP85 (v0.21)
ifeq ($(FPGA_TARGET), ORANGE-CRAB-0.21)
RESET_LOW=true
CLK_INPUT=48000000
CLK_FREQUENCY=40000000
LPF=constraints/orange-crab.lpf
PACKAGE=CSFBGA285
NEXTPNR_FLAGS=--85k --speed 8 --freq 40
OPENOCD_JTAG_CONFIG=openocd/olimex-arm-usb-tiny-h.cfg
OPENOCD_DEVICE_CONFIG=openocd/LFE5U-85F.cfg
endif

# ECP5-EVN
ifeq ($(FPGA_TARGET), ECP5-EVN)
RESET_LOW=true
@ -213,7 +225,7 @@ microwatt_out.config: microwatt.json $(LPF)
mv -f $@.tmp $@

microwatt.bit: microwatt_out.config
$(ECPPACK) --svf microwatt.svf $< $@
$(ECPPACK) --compress --freq 38.8 --svf microwatt.svf $< $@

microwatt.svf: microwatt.bit


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