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####  ORPSoC Xilinx Synthesis Makefile                            ####

####                                                              ####

####  Author(s):                                                  ####

####      - Julius Baxter, julius@opencores.org                   ####

####                                                              ####

####                                                              ####

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####                                                              ####

#### Copyright (C) 2009,2010,2011 Authors and OPENCORES.ORG       ####

####                                                              ####

#### This source file may be used and distributed without         ####

#### restriction provided that this copyright statement is not    ####

#### removed from the file and that any derivative work contains  ####

#### the original copyright notice and the associated disclaimer. ####

####                                                              ####

#### This source file is free software; you can redistribute it   ####

#### and/or modify it under the terms of the GNU Lesser General   ####

#### Public License as published by the Free Software Foundation; ####

#### either version 2.1 of the License, or (at your option) any   ####

#### later version.                                               ####

####                                                              ####

#### This source is distributed in the hope that it will be       ####

#### useful, but WITHOUT ANY WARRANTY; without even the implied   ####

#### warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ####

#### PURPOSE.  See the GNU Lesser General Public License for more ####

#### details.                                                     ####

####                                                              ####

#### You should have received a copy of the GNU Lesser General    ####

#### Public License along with this source; if not, download it   ####

#### from http://www.opencores.org/lgpl.shtml                     ####

####                                                              ####

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# Name of the directory we're currently in

CUR_DIR=$(shell pwd)

# We don't want the usbhostslave module to be pulled in during synthesis because

# we haven't copied the headers to our RTL director

#COMMON_VERILOG_MODULES_EXCLUDE+= usbhostslave

# The root path of the board build

BOARD_ROOT ?=$(CUR_DIR)/../../..

include $(BOARD_ROOT)/Makefile.inc

RTL_TOP ?=$(DESIGN_NAME)_top

SYN_RUN_DIR=$(BOARD_SYN_DIR)/run

TIMESCALE_FILE=timescale.v

SYNDIR_TIMESCALE_FILE=$(SYN_RUN_DIR)/$(TIMESCALE_FILE)

$(SYNDIR_TIMESCALE_FILE):

        $(Q)echo "" > $@

SYN_VERILOG_DEFINES=synthesis-defines.v

SYNDIR_SYN_VERILOG_DEFINES=$(SYN_RUN_DIR)/$(SYN_VERILOG_DEFINES)

$(SYNDIR_SYN_VERILOG_DEFINES):

        $(Q)echo "\`define SYNTHESIS" > $@

        $(Q)echo "\`define XILINX" >> $@

        $(Q)echo "" >> $@

GENERATED_DEFINES = $(BOOTROM_VERILOG)

GENERATED_DEFINES += $(SYNDIR_TIMESCALE_FILE)

GENERATED_DEFINES += $(SYNDIR_SYN_VERILOG_DEFINES)

FPGA_PART ?=xc5vlx50-ff676-1

OPT_MODE ?=Speed

OPT_LEVEL ?=2

XILINX_FLAGS ?=-intstyle silent

XILINX_XST_FLAGS ?= -power NO -glob_opt AllClockNets -write_timing_constraints NO -cross_clock_analysis NO -slice_utilization_ratio 100 -bram_utilization_ratio 100 -dsp_utilization_ratio 100 -safe_implementation No -fsm_style lut -ram_extract Yes -ram_style Auto -rom_extract Yes -rom_style Auto -auto_bram_packing NO -mux_extract YES -mux_style Auto -decoder_extract YES -priority_extract YES -shreg_extract YES -shift_extract YES -xor_collapse YES -resource_sharing YES -async_to_sync NO -use_dsp48 auto -iobuf YES -max_fanout 100000 -bufg 32 -register_duplication YES -equivalent_register_removal YES -register_balancing No -slice_packing YES -optimize_primitives NO -use_clock_enable Auto -use_sync_set Auto -use_sync_reset Auto -iob yes -slice_utilization_ratio_maxmargin 5

XCF_FILE=$(DESIGN_NAME).xcf

XST_FILE=$(DESIGN_NAME).xst

PRJ_FILE=$(DESIGN_NAME).prj

NGC_FILE=$(DESIGN_NAME).ngc

NETLIST_FILE=$(DESIGN_NAME).v

XST_PRJ_FILE_SRC_DECLARE=verilog work

print-config:

        $(Q)echo; echo "\t### Synthesis make configuration ###"; echo

        $(Q)echo "\tFPGA_PART="$(FPGA_PART)

        $(Q)echo "\tOPT_MODE="$(OPT_MODE)

        $(Q)echo "\tOTP_LEVEL="$(OPT_LEVEL)

        $(Q)echo "\tXILINX_XST_FLAGS="$(XILINX_XST_FLAGS)

        $(Q)echo

all: $(NGC_FILE)

# Generate the .xst file

# See this page for information on options:

# http://www.xilinx.com/itp/xilinx4/data/docs/xst/command_line5.html

$(XST_FILE):

        $(Q)echo; echo "\t#### Generating XST file ####"; echo

        $(Q)echo "# XST Script for ORPSoC Synthesis" > $@

        $(Q)echo "# This file is autogenerated - any changes will be overwritten" >> $@

        $(Q)echo "# See the Makefile in syn/xst/bin to make changes" >> $@

        $(Q)echo "run" >> $@

        $(Q)echo "-ifn "$(PRJ_FILE) >> $@

        $(Q)echo "-ifmt mixed" >> $@

        $(Q)echo "-top "$(RTL_TOP) >> $@

        $(Q)echo "-ofmt NGC" >> $@

        $(Q)echo "-ofn "$(NGC_FILE) >> $@

        $(Q)echo "-p "$(FPGA_PART) >> $@

        $(Q)echo "-opt_level "$(OPT_LEVEL) >> $@

        $(Q)echo "-opt_mode "$(OPT_MODE) >> $@

        $(Q)echo "-uc "$(XCF_FILE) >> $@

#       $(Q)echo "elaborate " >> $@

#       $(Q)echo -n "-vlgpath \"" >> $@

# option missing from XST - wtf?!       $(Q)for vlogpath in $(VERILOG_SRC_PATHS); do \

                echo -n $$vlogpath" "; done >> $@

#       $(Q)echo "\"" >> $@

# Give board then common verilog include paths, hoping xst does a sensible thing

# and searches them in order.

        $(Q)echo "-vlgincdir { "$(BOARD_RTL_VERILOG_INCLUDE_DIR)" "$(COMMON_RTL_VERILOG_DIR)/include" "$(BOOTROM_SW_DIR) " }" >> $@

        $(Q)echo >> $@

# Generate Xilinx project (.prj) file

$(PRJ_FILE): $(RTL_VERILOG_SRC)

        $(Q)echo; echo "\t#### Generating Xilinx PRJ file ####";

#       $(Q)echo "# Autogenerated XST .prj file" > $@

#       $(Q)echo "# Any changes will be written over." >> $@

        $(Q)for file in $(RTL_VERILOG_SRC); do \

                echo $(XST_PRJ_FILE_SRC_DECLARE) $$file >> $@ ; \

        done

        $(Q)echo >> $@

        $(Q)echo

# Constraints file

$(XCF_FILE):

        $(Q)echo; echo "\t#### Generating Xilinx XCF file ####"; echo

        $(Q)echo "# Autogenerated XST .prj file" > $@

        $(Q)echo "#" >> $@

        $(Q)echo "# Not much here, XST is smart enough to determine clocks through DCMs" >> $@

        $(Q)echo "#" >> $@

        $(Q)echo "# TODO: Potentially use the other XTAL for DDR RAM clocking" >> $@

        $(Q)echo "#" >> $@

        $(Q)echo "# 200MHz diff. XTAL used as main system clock" >> $@

        $(Q)echo "NET \"sys_clk_in_p\" TNM_NET = \"sys_clk_in_p_grp\";" >> $@

        $(Q)echo "NET \"sys_clk_in_n\" TNM_NET = \"sys_clk_in_n_grp\";" >> $@

        $(Q)echo "TIMESPEC \"TS_sys_clk_in_p_grp\" = PERIOD \"sys_clk_in_p_grp\" 5 ns HIGH 50 %;" >> $@

        $(Q)echo "TIMESPEC \"TS_sys_clk_in_n_grp\" = PERIOD \"sys_clk_in_n_grp\" 5 ns LOW 50 %;" >> $@

        $(Q)echo "# 100 MHz user clock" >> $@

        $(Q)echo "#NET \"sys_clk_in\" TNM_NET = \"sys_clk_in_grp\";" >> $@

        $(Q)echo "#TIMESPEC \"TS_sys_clk_in\" = PERIOD \"sys_clk_in_grp\" 10 ns HIGH 50%;" >> $@

        $(Q)echo "# Ignore the reset logic" >> $@

        $(Q)echo "NET rst_n_pad_i* TIG;" >> $@

        $(Q)echo "# SSRAM multicylce constraints:" >> $@

        $(Q)echo "# Define the two clock domains as timespecs" >> $@

        $(Q)echo "#NET dcm0_clkdv TNM_NET=\"wb_clk\";" >> $@

        $(Q)echo "#TIMESPEC \"TS_wb_clk\" = PERIOD \"wb_clk\" 20 ns HIGH 10;" >> $@

        $(Q)echo "#NET dcm0_clk0 TNM_NET = \"ssram_clk200\";" >> $@

        $(Q)echo "#TIMESPEC \"TS_ssram_clk200\" = PERIOD \"ssram_clk200\" \"TS_wb_clk\" / 4;" >> $@

        $(Q)echo "# Now define their relationship - logic should be configured so that there's" >> $@

        $(Q)echo "# 1 WB cycle at all times before anything is sampled across domains" >> $@

        $(Q)echo "#TIMESPEC \"TS_wb_clk_ssram_clk200\" = from \"wb_clk\" TO \"ssram_clk200\" 15 ns;" >> $@

        $(Q)echo "#TIMESPEC \"TS_ssram_clk200_wb_clk\" = from \"ssram_clk200\" TO \"wb_clk\" 20 ns;" >> $@

# XST command

$(NGC_FILE): $(PRJ_FILE) $(XST_FILE) $(XCF_FILE) $(GENERATED_DEFINES)

        $(Q)echo; echo "\t#### Running XST ####"; echo;

        $(Q)xst -ifn $(XST_FILE) $(XILINX_FLAGS) $(XST_FLAGS)

        $(Q)echo

netlist: $(NETLIST_FILE)

# Netlist generation command

$(NETLIST_FILE): $(NGC_FILE)

        $(Q)echo; echo "\t#### Generating verilog netlist ####"; echo;

        $(Q)netgen -sim -aka -dir . -ofmt verilog $< -w $@

clean:

        $(Q)rm -rf *.* xst

clean-sw:

        $(MAKE) -C $(PROJECT_ROOT)/sw/lib distclean

distclean: clean-sw clean

.PRECIOUS : $(NGC_FILE) $(XST_FILE) $(XCF_FILE)