mirror of
https://github.com/antonblanchard/microwatt.git
synced 2026-01-20 17:47:42 +00:00
21ab36a0c0
This splits out the decoding done in the decode0 step into a separate predecoder, used when writing instructions into the icache. The icache now holds 36 bits per instruction rather than 32. For valid instructions, those 36 bits comprise the bottom 26 bits of the instruction word, a 9-bit insn_code value (which uniquely identifies the instruction), and a zero in the MSB. For illegal instructions, the MSB is one and the full instruction word is in the bottom 32 bits. Having the full instruction word available for illegal instructions means that it can be printed in the log when simulating, or in future could be placed in the HEIR register. If we don't have an FPU, then the floating-point instructions are regarded as illegal. In that case, the insn_code values would fit into 8 bits, which could be used in future to reduce the size of decode_rom from 512 to 256 entries. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
344 lines
11 KiB
Makefile
344 lines
11 KiB
Makefile
GHDL ?= ghdl
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GHDLFLAGS=--std=08
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CFLAGS=-O3 -Wall
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# Need to investigate why yosys is hitting verilator warnings, and eventually turn on -Wall
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VERILATOR_FLAGS=-O3 -Wno-fatal -Wno-CASEOVERLAP -Wno-UNOPTFLAT #--trace
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# It takes forever to build with optimisation, so disable by default
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#VERILATOR_CFLAGS=-O3
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# some yosys builds have ghdl plugin built in, otherwise need "-m ghdl"
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GHDLSYNTH ?= $(shell ($(YOSYS) -H | grep -q ghdl) || echo -m ghdl)
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YOSYS ?= yosys
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NEXTPNR ?= nextpnr-ecp5
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ECPPACK ?= ecppack
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ECPPROG ?= ecpprog
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OPENOCD ?= openocd
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VUNITRUN ?= python3 ./run.py
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VERILATOR ?= verilator
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DFUUTIL ?= dfu-util
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DFUSUFFIX ?= dfu-suffix
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# We need a version of GHDL built with either the LLVM or gcc backend.
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# Fedora provides this, but other distros may not. Another option is to use
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# the Docker image.
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DOCKER ?= 0
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PODMAN ?= 0
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ifeq ($(DOCKER), 1)
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DOCKERBIN=docker
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USE_DOCKER=1
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endif
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ifeq ($(PODMAN), 1)
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DOCKERBIN=podman
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USE_DOCKER=1
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endif
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ifeq ($(USE_DOCKER), 1)
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PWD = $(shell pwd)
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DOCKERARGS = run --rm -v $(PWD):/src:z -w /src
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GHDL = $(DOCKERBIN) $(DOCKERARGS) ghdl/ghdl:buster-llvm-7 ghdl
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CC = $(DOCKERBIN) $(DOCKERARGS) ghdl/ghdl:buster-llvm-7 gcc
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GHDLSYNTH = -m ghdl
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YOSYS = $(DOCKERBIN) $(DOCKERARGS) hdlc/ghdl:yosys yosys
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NEXTPNR = $(DOCKERBIN) $(DOCKERARGS) hdlc/nextpnr:ecp5 nextpnr-ecp5
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ECPPACK = $(DOCKERBIN) $(DOCKERARGS) hdlc/prjtrellis ecppack
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OPENOCD = $(DOCKERBIN) $(DOCKERARGS) --device /dev/bus/usb hdlc/prog openocd
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VUNITRUN = $(DOCKERBIN) $(DOCKERARGS) ghdl/vunit:llvm python3 ./run.py
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VERILATOR = $(DOCKERBIN) $(DOCKERARGS) verilator/verilator:latest
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endif
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VUNITARGS += -p10
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all = core_tb icache_tb dcache_tb dmi_dtm_tb \
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wishbone_bram_tb soc_reset_tb
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all: $(all)
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core_files = decode_types.vhdl common.vhdl wishbone_types.vhdl fetch1.vhdl \
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utils.vhdl plru.vhdl cache_ram.vhdl icache.vhdl predecode.vhdl \
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decode1.vhdl helpers.vhdl insn_helpers.vhdl \
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control.vhdl decode2.vhdl register_file.vhdl \
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cr_file.vhdl crhelpers.vhdl ppc_fx_insns.vhdl rotator.vhdl \
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logical.vhdl countbits.vhdl multiply.vhdl divider.vhdl execute1.vhdl \
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loadstore1.vhdl mmu.vhdl dcache.vhdl writeback.vhdl core_debug.vhdl \
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core.vhdl fpu.vhdl pmu.vhdl
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soc_files = wishbone_arbiter.vhdl wishbone_bram_wrapper.vhdl sync_fifo.vhdl \
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wishbone_debug_master.vhdl xics.vhdl syscon.vhdl gpio.vhdl soc.vhdl \
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spi_rxtx.vhdl spi_flash_ctrl.vhdl
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uart_files = $(wildcard uart16550/*.v)
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soc_sim_files = $(core_files) $(soc_files) sim_console.vhdl sim_pp_uart.vhdl sim_bram_helpers.vhdl \
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sim_bram.vhdl sim_jtag_socket.vhdl sim_jtag.vhdl dmi_dtm_xilinx.vhdl \
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sim_16550_uart.vhdl \
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foreign_random.vhdl glibc_random.vhdl glibc_random_helpers.vhdl
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soc_sim_c_files = sim_vhpi_c.c sim_bram_helpers_c.c sim_console_c.c \
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sim_jtag_socket_c.c
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soc_sim_obj_files=$(soc_sim_c_files:.c=.o)
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comma := ,
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soc_sim_link=$(patsubst %,-Wl$(comma)%,$(soc_sim_obj_files))
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unisim_dir = sim-unisim
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unisim_lib = $(unisim_dir)/unisim-obj08.cf
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unisim_lib_files = $(unisim_dir)/BSCANE2.vhdl $(unisim_dir)/BUFG.vhdl \
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$(unisim_dir)/unisim_vcomponents.vhdl
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$(unisim_lib): $(unisim_lib_files)
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$(GHDL) -i --std=08 --work=unisim --workdir=$(unisim_dir) $^
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GHDLFLAGS += -P$(unisim_dir)
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soc_tbs = core_tb icache_tb dcache_tb dmi_dtm_tb wishbone_bram_tb
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soc_flash_tbs = core_flash_tb
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soc_dram_tbs = dram_tb core_dram_tb
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ifneq ($(FLASH_MODEL_PATH),)
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fmf_dir = $(FLASH_MODEL_PATH)/fmf
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fmf_lib = $(fmf_dir)/fmf-obj08.cf
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fmf_lib_files = $(wildcard $(fmf_dir)/*.vhd)
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GHDLFLAGS += -P$(fmf_dir)
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$(fmf_lib): $(fmf_lib_files)
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$(GHDL) -i --std=08 --work=fmf --workdir=$(fmf_dir) $^
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flash_model_files=$(FLASH_MODEL_PATH)/s25fl128s.vhd
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flash_model_files: $(fmf_lib)
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else
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flash_model_files=sim_no_flash.vhdl
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fmf_lib=
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endif
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$(soc_flash_tbs): %: $(soc_sim_files) $(soc_sim_obj_files) $(unisim_lib) $(fmf_lib) $(flash_model_files) %.vhdl
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$(GHDL) -c $(GHDLFLAGS) $(soc_sim_link) $(soc_sim_files) $(flash_model_files) $@.vhdl $(unisim_files) -e $@
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$(soc_tbs): %: $(soc_sim_files) $(soc_sim_obj_files) $(unisim_lib) %.vhdl
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$(GHDL) -c $(GHDLFLAGS) $(soc_sim_link) $(soc_sim_files) $@.vhdl -e $@
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soc_reset_tb: fpga/soc_reset_tb.vhdl fpga/soc_reset.vhdl
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$(GHDL) -c $(GHDLFLAGS) fpga/soc_reset_tb.vhdl fpga/soc_reset.vhdl -e $@
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# LiteDRAM sim
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VERILATOR_ROOT=$(shell verilator -getenv VERILATOR_ROOT 2>/dev/null)
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ifeq (, $(VERILATOR_ROOT))
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$(soc_dram_tbs):
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$(error "Verilator is required to make this target !")
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else
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verilated_dram: litedram/generated/sim/litedram_core.v
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verilator $(VERILATOR_FLAGS) -CFLAGS $(VERILATOR_CFLAGS) -Wno-fatal --cc $<
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make -C obj_dir -f ../litedram/extras/sim_dram_verilate.mk VERILATOR_ROOT=$(VERILATOR_ROOT)
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SIM_DRAM_CFLAGS = -I. -Iobj_dir -Ilitedram/generated/sim -I$(VERILATOR_ROOT)/include -I$(VERILATOR_ROOT)/include/vltstd
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SIM_DRAM_CFLAGS += -DVM_COVERAGE=0 -DVM_SC=0 -DVM_TRACE=1 -DVL_PRINTF=printf -faligned-new
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sim_litedram_c.o: litedram/extras/sim_litedram_c.cpp verilated_dram
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$(CC) $(CPPFLAGS) $(SIM_DRAM_CFLAGS) $(CFLAGS) -c $< -o $@
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soc_dram_files = $(core_files) $(soc_files) litedram/extras/litedram-wrapper-l2.vhdl litedram/generated/sim/litedram-initmem.vhdl
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soc_dram_sim_files = $(soc_sim_files) litedram/extras/sim_litedram.vhdl
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soc_dram_sim_obj_files = $(soc_sim_obj_files) sim_litedram_c.o
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dram_link_files=-Wl,obj_dir/Vlitedram_core__ALL.a -Wl,obj_dir/verilated.o -Wl,obj_dir/verilated_vcd_c.o -Wl,-lstdc++
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soc_dram_sim_link=$(patsubst %,-Wl$(comma)%,$(soc_dram_sim_obj_files)) $(dram_link_files)
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$(soc_dram_tbs): %: $(soc_dram_files) $(soc_dram_sim_files) $(soc_dram_sim_obj_files) $(flash_model_files) $(unisim_lib) $(fmf_lib) %.vhdl
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$(GHDL) -c $(GHDLFLAGS) $(soc_dram_sim_link) $(soc_dram_files) $(soc_dram_sim_files) $(flash_model_files) $@.vhdl -e $@
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endif
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# Hello world
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MEMORY_SIZE ?=8192
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RAM_INIT_FILE ?=hello_world/hello_world.hex
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# Micropython
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#MEMORY_SIZE=393216
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#RAM_INIT_FILE=micropython/firmware.hex
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FPGA_TARGET ?= ORANGE-CRAB-0.21
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# FIXME: icache RAMs aren't being inferrenced as block RAMs on ECP5
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# with yosys, so make it smaller for now as a workaround.
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ICACHE_NUM_LINES=4
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clkgen=fpga/clk_gen_ecp5.vhd
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toplevel=fpga/top-generic.vhdl
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dmi_dtm=dmi_dtm_dummy.vhdl
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LITEDRAM_GHDL_ARG=
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# OrangeCrab with ECP85 (original v0.0 with UM5G-85 chip)
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ifeq ($(FPGA_TARGET), ORANGE-CRAB)
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RESET_LOW=true
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CLK_INPUT=48000000
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CLK_FREQUENCY=48000000
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LPF=constraints/orange-crab.lpf
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PACKAGE=CSFBGA285
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NEXTPNR_FLAGS=--um5g-85k --freq 48
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OPENOCD_JTAG_CONFIG=openocd/olimex-arm-usb-tiny-h.cfg
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OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg
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ECP_FLASH_OFFSET=0x80000
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endif
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# OrangeCrab with ECP85 (v0.21)
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ifeq ($(FPGA_TARGET), ORANGE-CRAB-0.21)
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RESET_LOW=true
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CLK_INPUT=48000000
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CLK_FREQUENCY=48000000
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LPF=constraints/orange-crab-0.2.lpf
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PACKAGE=CSFBGA285
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NEXTPNR_FLAGS=--85k --speed 8 --freq 48 --timing-allow-fail --ignore-loops
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OPENOCD_JTAG_CONFIG=openocd/olimex-arm-usb-tiny-h.cfg
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OPENOCD_DEVICE_CONFIG=openocd/LFE5U-85F.cfg
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DFU_VENDOR=1209
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DFU_PRODUCT=5af0
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ECP_FLASH_OFFSET=0x80000
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toplevel=fpga/top-orangecrab0.2.vhdl
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litedram_target=orangecrab-85-0.2
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soc_extra_v += litesdcard/generated/lattice/litesdcard_core.v
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dmi_dtm=dmi_dtm_ecp5.vhdl
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endif
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# ECP5-EVN
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ifeq ($(FPGA_TARGET), ECP5-EVN)
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RESET_LOW=true
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CLK_INPUT=12000000
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CLK_FREQUENCY=40000000
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LPF=constraints/ecp5-evn.lpf
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PACKAGE=CABGA381
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NEXTPNR_FLAGS=--um5g-85k --freq 40
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OPENOCD_JTAG_CONFIG=openocd/ecp5-evn.cfg
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OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg
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endif
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ifneq ($(litedram_target),)
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soc_extra_synth += litedram/extras/litedram-wrapper-l2.vhdl \
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litedram/generated/$(litedram_target)/litedram-initmem.vhdl
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soc_extra_v += litedram/generated/$(litedram_target)/litedram_core.v
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LITEDRAM_GHDL_ARG=-gUSE_LITEDRAM=true
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endif
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GHDL_IMAGE_GENERICS=-gMEMORY_SIZE=$(MEMORY_SIZE) -gRAM_INIT_FILE=$(RAM_INIT_FILE) \
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-gRESET_LOW=$(RESET_LOW) -gCLK_INPUT=$(CLK_INPUT) -gCLK_FREQUENCY=$(CLK_FREQUENCY) -gICACHE_NUM_LINES=$(ICACHE_NUM_LINES) \
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$(LITEDRAM_GHDL_ARG)
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ifeq ($(FPGA_TARGET), verilator)
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RESET_LOW=true
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CLK_INPUT=50000000
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CLK_FREQUENCY=50000000
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clkgen=fpga/clk_gen_bypass.vhd
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endif
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fpga_files = fpga/soc_reset.vhdl \
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fpga/pp_fifo.vhd fpga/pp_soc_uart.vhd fpga/main_bram.vhdl \
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nonrandom.vhdl
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synth_files = $(core_files) $(soc_files) $(soc_extra_synth) $(fpga_files) $(clkgen) $(toplevel) $(dmi_dtm)
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microwatt.json: $(synth_files) $(RAM_INIT_FILE)
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$(YOSYS) $(GHDLSYNTH) -p "ghdl --std=08 --no-formal $(GHDL_IMAGE_GENERICS) $(synth_files) -e toplevel; read_verilog $(uart_files) $(soc_extra_v); synth_ecp5 -abc9 -nowidelut -json $@ $(SYNTH_ECP5_FLAGS)"
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microwatt.v: $(synth_files) $(RAM_INIT_FILE)
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$(YOSYS) $(GHDLSYNTH) -p "ghdl --std=08 --no-formal $(GHDL_IMAGE_GENERICS) $(synth_files) -e toplevel; write_verilog $@"
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microwatt-verilator: microwatt.v verilator/microwatt-verilator.cpp verilator/uart-verilator.c
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$(VERILATOR) $(VERILATOR_FLAGS) -CFLAGS "$(VERILATOR_CFLAGS) -DCLK_FREQUENCY=$(CLK_FREQUENCY)" -Iuart16550 --assert --cc --exe --build $^ -o $@ -top-module toplevel
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@cp -f obj_dir/microwatt-verilator microwatt-verilator
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microwatt_out.config: microwatt.json $(LPF)
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$(NEXTPNR) --json $< --lpf $(LPF) --textcfg $@.tmp $(NEXTPNR_FLAGS) --package $(PACKAGE)
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mv -f $@.tmp $@
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microwatt.bit: microwatt_out.config
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$(ECPPACK) --compress --freq 38.8 --svf microwatt.svf $< $@
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microwatt.svf: microwatt.bit
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prog: microwatt.svf
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$(OPENOCD) -f $(OPENOCD_JTAG_CONFIG) -f $(OPENOCD_DEVICE_CONFIG) -c "transport select jtag; init; svf $<; exit"
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microwatt.dfu: microwatt.bit
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cp $< $@.tmp
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$(DFUSUFFIX) -v $(DFU_VENDOR) -p $(DFU_PRODUCT) -a $@.tmp
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mv $@.tmp $@
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dfuprog: microwatt.dfu
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$(DFUUTIL) -a 0 -D $<
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ecpprog: microwatt.bit
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$(ECPPROG) -S $<
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ecpflash: microwatt.bit
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test -n "$(ECP_FLASH_OFFSET)" || (echo Error: No ECP_FLASH_OFFSET defined for target; exit 1)
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$(ECPPROG) -o $(ECP_FLASH_OFFSET) $<
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tests = $(sort $(patsubst tests/%.out,%,$(wildcard tests/*.out)))
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tests_console = $(sort $(patsubst tests/%.console_out,%,$(wildcard tests/*.console_out)))
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tests_console: $(tests_console)
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check_vunit:
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$(VUNITRUN) $(VUNITARGS)
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check: $(tests) tests_console test_micropython test_micropython_long tests_unit
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check_light: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 test_micropython test_micropython_long tests_console tests_unit
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$(tests): core_tb
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@./scripts/run_test.sh $@
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$(tests_console): core_tb
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@./scripts/run_test_console.sh $@
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test_micropython: core_tb
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@./scripts/test_micropython.py
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test_micropython_verilator: microwatt-verilator
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@./scripts/test_micropython_verilator.py
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test_micropython_long: core_tb
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@./scripts/test_micropython_long.py
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test_micropython_verilator_long: microwatt-verilator
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@./scripts/test_micropython_verilator_long.py
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tests_soc_tb = $(patsubst %_tb,%_tb_test,$(soc_tbs))
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%_test: %
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./$< --assert-level=error > /dev/null
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tests_soc: $(tests_soc_tb)
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# FIXME SOC tests have bit rotted, so disable for now
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#tests_unit: tests_soc
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TAGS:
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find . -name '*.vhdl' | xargs ./scripts/vhdltags
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.PHONY: TAGS
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_clean:
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rm -f *.o *.cf $(all)
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rm -f fpga/*.o fpga/*.cf
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rm -f sim-unisim/*.o sim-unisim/*.cf
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rm -f litedram/extras/*.o
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rm -f TAGS
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rm -f scripts/mw_debug/*.o
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rm -f scripts/mw_debug/mw_debug
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rm -f microwatt.bin microwatt.json microwatt.svf microwatt_out.config
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rm -f microwatt.v microwatt-verilator
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rm -rf obj_dir/
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clean: _clean
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make -f scripts/mw_debug/Makefile clean
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make -f hello_world/Makefile clean
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distclean: _clean
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rm -f *~ fpga/*~ lib/*~ console/*~ include/*~
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rm -rf litedram/build
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rm -f litedram/extras/*~
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rm -f litedram/gen-src/*~
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rm -f litedram/gen-src/sdram_init/*~
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make -f scripts/mw_debug/Makefile distclean
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make -f hello_world/Makefile distclean
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.PHONY: all prog check check_light clean distclean
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.PRECIOUS: microwatt.json microwatt_out.config microwatt.bit
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