Update vivado evaluations

README.md

@@ -674,34 +674,31 @@ for an example of how to do that.
 Evaluation: Timing and Utilization on Xilinx 7-Series FPGAs
 -----------------------------------------------------------
 
-The following evaluations have been performed with Vivado 2016.1.
+The following evaluations have been performed with Vivado 2017.2.
 
 #### Timing on Xilinx 7-Series FPGAs
 
 The `picorv32_axi` module with enabled `TWO_CYCLE_ALU` has been placed and
 routed for Xilinx Artix-7T, Kintex-7T, Virtex-7T, Kintex UltraScale, and Virtex
 UltraScale devices in all speed grades. A binary search is used to find the
-lowest clock period for which the design meets timing.
+shortest clock period for which the design meets timing.
 
 See `make table.txt` in [scripts/vivado/](scripts/vivado/).
 
-| Family                   | Device               | Speedgrade | Clock Period (Freq.) |
-|:------------------------ |:-------------------- |:----------:| --------------------:|
-| Xilinx Artix-7T          | xc7a15t-fgg484-1     | -1         |     4.1 ns (243 MHz) |
-| Xilinx Artix-7T          | xc7a15t-fgg484-2     | -2         |     3.5 ns (285 MHz) |
-| Xilinx Artix-7T          | xc7a15t-fgg484-3     | -3         |     3.1 ns (322 MHz) |
-| Xilinx Kintex-7T         | xc7k70t-fbg676-1     | -1         |     2.8 ns (357 MHz) |
-| Xilinx Kintex-7T         | xc7k70t-fbg676-2     | -2         |     2.2 ns (454 MHz) |
-| Xilinx Kintex-7T         | xc7k70t-fbg676-3     | -3         |     2.1 ns (476 MHz) |
-| Xilinx Virtex-7T         | xc7v585t-ffg1761-1   | -1         |     2.7 ns (370 MHz) |
-| Xilinx Virtex-7T         | xc7v585t-ffg1761-2   | -2         |     2.2 ns (454 MHz) |
-| Xilinx Virtex-7T         | xc7v585t-ffg1761-3   | -3         |     2.1 ns (476 MHz) |
-| Xilinx Kintex UltraScale | xcku035-fbva676-1-c  | -1         |     2.3 ns (434 MHz) |
-| Xilinx Kintex UltraScale | xcku035-fbva676-2-e  | -2         |     2.0 ns (500 MHz) |
-| Xilinx Kintex UltraScale | xcku035-fbva676-3-e  | -3         |     1.8 ns (555 MHz) |
-| Xilinx Virtex UltraScale | xcvu065-ffvc1517-1-i | -1         |     2.3 ns (434 MHz) |
-| Xilinx Virtex UltraScale | xcvu065-ffvc1517-2-e | -2         |     2.1 ns (476 MHz) |
-| Xilinx Virtex UltraScale | xcvu065-ffvc1517-3-e | -3         |     1.9 ns (526 MHz) |
+| Device                    | Device               | Speedgrade | Clock Period (Freq.) |
+|:------------------------- |:---------------------|:----------:| --------------------:|
+| Xilinx Kintex-7T          | xc7k70t-fbg676-2     | -2         |     2.4 ns (416 MHz) |
+| Xilinx Kintex-7T          | xc7k70t-fbg676-3     | -3         |     2.3 ns (434 MHz) |
+| Xilinx Virtex-7T          | xc7v585t-ffg1761-2   | -2         |     2.3 ns (434 MHz) |
+| Xilinx Virtex-7T          | xc7v585t-ffg1761-3   | -3         |     2.3 ns (434 MHz) |
+| Xilinx Kintex UltraScale  | xcku035-fbva676-2-e  | -2         |     2.1 ns (476 MHz) |
+| Xilinx Kintex UltraScale  | xcku035-fbva676-3-e  | -3         |     1.8 ns (555 MHz) |
+| Xilinx Virtex UltraScale  | xcvu065-ffvc1517-2-e | -2         |     1.9 ns (526 MHz) |
+| Xilinx Virtex UltraScale  | xcvu065-ffvc1517-3-e | -3         |     1.8 ns (555 MHz) |
+| Xilinx Kintex UltraScale+ | xcku3p-ffva676-2-e   | -2         |     1.5 ns (666 MHz) |
+| Xilinx Kintex UltraScale+ | xcku3p-ffva676-3-e   | -3         |     1.3 ns (769 MHz) |
+| Xilinx Virtex UltraScale+ | xcvu3p-ffvc1517-2-e  | -2         |     1.5 ns (666 MHz) |
+| Xilinx Virtex UltraScale+ | xcvu3p-ffvc1517-3-e  | -3         |     1.4 ns (714 MHz) |
 
 #### Utilization on Xilinx 7-Series FPGAs
 
@@ -721,7 +718,7 @@ See `make area` in [scripts/vivado/](scripts/vivado/).
 
 | Core Variant       | Slice LUTs | LUTs as Memory | Slice Registers |
 |:------------------ | ----------:| --------------:| ---------------:|
-| PicoRV32 (small)   |        725 |             48 |             441 |
-| PicoRV32 (regular) |        874 |             48 |             572 |
-| PicoRV32 (large)   |       2072 |             88 |            1022 |
+| PicoRV32 (small)   |        757 |             48 |             442 |
+| PicoRV32 (regular) |        910 |             48 |             583 |
+| PicoRV32 (large)   |       2090 |             88 |            1085 |
 

scripts/vivado/Makefile

@@ -1,5 +1,5 @@
 
-VIVADO_BASE = /opt/Xilinx/Vivado/2016.1
+VIVADO_BASE = /opt/Xilinx/Vivado/2017.2
 VIVADO = $(VIVADO_BASE)/bin/vivado
 XVLOG = $(VIVADO_BASE)/bin/xvlog
 XELAB = $(VIVADO_BASE)/bin/xelab
@@ -8,6 +8,9 @@ TOOLCHAIN_PREFIX = riscv64-unknown-elf-
 
 export VIVADO
 
+# work-around for http://svn.clifford.at/handicraft/2016/vivadosig11
+export RDI_VERBOSE = False
+
 help:
 	@echo ""
 	@echo "Simple synthesis tests:"
@@ -49,11 +52,12 @@ tab_%/results.txt:
 area: synth_area_small synth_area_regular synth_area_large
 	-grep -B4 -A10 'Slice LUTs' synth_area_small.log synth_area_regular.log synth_area_large.log
 
-table.txt: tab_small_xc7a_1/results.txt tab_small_xc7a_2/results.txt tab_small_xc7a_3/results.txt
-table.txt: tab_small_xc7k_1/results.txt tab_small_xc7k_2/results.txt tab_small_xc7k_3/results.txt
-table.txt: tab_small_xc7v_1/results.txt tab_small_xc7v_2/results.txt tab_small_xc7v_3/results.txt
-table.txt: tab_small_xcku_1/results.txt tab_small_xcku_2/results.txt tab_small_xcku_3/results.txt
-table.txt: tab_small_xcvu_1/results.txt tab_small_xcvu_2/results.txt tab_small_xcvu_3/results.txt
+table.txt: tab_small_xc7k_2/results.txt  tab_small_xc7k_3/results.txt
+table.txt: tab_small_xc7v_2/results.txt  tab_small_xc7v_3/results.txt
+table.txt: tab_small_xcku_2/results.txt  tab_small_xcku_3/results.txt
+table.txt: tab_small_xcvu_2/results.txt  tab_small_xcvu_3/results.txt
+table.txt: tab_small_xckup_2/results.txt tab_small_xckup_3/results.txt
+table.txt: tab_small_xcvup_2/results.txt tab_small_xcvup_3/results.txt
 
 table.txt:
 	bash table.sh > table.txt

scripts/vivado/table.sh

@@ -13,6 +13,8 @@ do
 		xc7v) d="Xilinx Virtex-7T" ;;
 		xcku) d="Xilinx Kintex UltraScale" ;;
 		xcvu) d="Xilinx Virtex UltraScale" ;;
+		xckup) d="Xilinx Kintex UltraScale+" ;;
+		xcvup) d="Xilinx Virtex UltraScale+" ;;
 	esac
 	speedtxt=$( printf '%s.%s ns (%d MHz)' ${speed%?} ${speed#?} $((10000 / speed)) )
 	printf '| %-25s | %-10s | %20s |\n' "$d" "-$grade" "$speedtxt"

scripts/vivado/tabtest.sh

@@ -8,7 +8,7 @@ mkdir -p tab_${ip}_${dev}_${grade}
 cd tab_${ip}_${dev}_${grade}
 
 best_speed=99
-speed=30
+speed=20
 step=16
 
 synth_case() {
@@ -18,17 +18,12 @@ synth_case() {
 	fi
 
 	case "${dev}" in
-		xc7a) xl_device="xc7a15t-fgg484-${grade}" ;;
 		xc7k) xl_device="xc7k70t-fbg676-${grade}" ;;
 		xc7v) xl_device="xc7v585t-ffg1761-${grade}" ;;
-		xcku) xl_device="xcku035-fbva676-${grade}" ;;
-		xcvu) xl_device="xcvu065-ffvc1517-${grade}" ;;
-	esac
-
-	case "${dev}-${grade}" in
-		xcku-1) xl_device="${xl_device}-c" ;;
-		xcvu-1) xl_device="${xl_device}-i" ;;
-		xcku-?|xcvu-?) xl_device="${xl_device}-e" ;;
+		xcku) xl_device="xcku035-fbva676-${grade}-e" ;;
+		xcvu) xl_device="xcvu065-ffvc1517-${grade}-e" ;;
+		xckup) xl_device="xcku3p-ffva676-${grade}-e" ;;
+		xcvup) xl_device="xcvu3p-ffvc1517-${grade}-e" ;;
 	esac
 
 	cat > test_${1}.tcl <<- EOT
@@ -60,19 +55,24 @@ synth_case() {
 	mv test_${1}.log test_${1}.txt
 }
 
+got_violated=false
+got_met=false
+
 countdown=2
 while [ $countdown -gt 0 ]; do
 	synth_case $speed
 
 	if grep -q '^Slack.*(VIOLATED)' test_${speed}.txt; then
 		echo "        tab_${ip}_${dev}_${grade}/test_${speed} VIOLATED"
-		[ $speed -eq 38 ] || step=$((step / 2))
+		step=$((step / 2))
 		speed=$((speed + step))
+		got_violated=true
 	elif grep -q '^Slack.*(MET)' test_${speed}.txt; then
 		echo "        tab_${ip}_${dev}_${grade}/test_${speed} MET"
 		[ $speed -lt $best_speed ] && best_speed=$speed
 		step=$((step / 2))
 		speed=$((speed - step))
+		got_met=true
 	else
 		echo "ERROR: No slack line found in $PWD/test_${speed}.txt!"
 		exit 1
@@ -85,6 +85,17 @@ while [ $countdown -gt 0 ]; do
 	fi
 done
 
+if ! $got_violated; then
+	echo "ERROR: No timing violated in $PWD!"
+	exit 1
+fi
+
+if ! $got_met; then
+	echo "ERROR: No timing met in $PWD!"
+	exit 1
+fi
+
+
 echo "-----------------------"
 echo "Best speed for tab_${ip}_${dev}_${grade}: $best_speed"
 echo "-----------------------"