Corrected density check script, and corrected the LI fill generation
to meet the MR manufacturing requirements.
diff --git a/sky130/custom/scripts/check_density.py b/sky130/custom/scripts/check_density.py
index 0df2423..f2e529c 100755
--- a/sky130/custom/scripts/check_density.py
+++ b/sky130/custom/scripts/check_density.py
@@ -223,18 +223,7 @@
# Use signal to poll the process and generate any output as it arrives
- fomfill = []
- polyfill = []
- lifill = []
- met1fill = []
- met2fill = []
- met3fill = []
- met4fill = []
- met5fill = []
- xtiles = 0
- ytiles = 0
- xfrac = 0.0
- yfrac = 0.0
+ dlines = []
while mproc:
status = mproc.poll()
@@ -248,39 +237,8 @@
outlines = output[0]
errlines = output[1]
for line in outlines.splitlines():
+ dlines.append(line)
print(line)
- dpair = line.split(':')
- if len(dpair) == 2:
- layer = dpair[0]
- try:
- density = float(dpair[1].strip())
- except:
- continue
- if layer == 'FOM':
- fomfill.append(density)
- elif layer == 'POLY':
- polyfill.append(density)
- elif layer == 'LI1':
- lifill.append(density)
- elif layer == 'MET1':
- met1fill.append(density)
- elif layer == 'MET2':
- met2fill.append(density)
- elif layer == 'MET3':
- met3fill.append(density)
- elif layer == 'MET4':
- met4fill.append(density)
- elif layer == 'MET5':
- met5fill.append(density)
- elif layer == 'XTILES':
- xtiles = int(dpair[1].strip())
- elif layer == 'YTILES':
- ytiles = int(dpair[1].strip())
- elif layer == 'XFRAC':
- xfrac = float(dpair[1].strip())
- elif layer == 'YFRAC':
- yfrac = float(dpair[1].strip())
-
for line in errlines.splitlines():
print(line)
print('Magic exited with status ' + str(status))
@@ -300,6 +258,7 @@
sresult = select.select([mproc.stdout, mproc.stderr], [], [], 0)[0]
if mproc.stdout in sresult:
outstring = mproc.stdout.readline().strip()
+ dlines.append(outstring)
print(outstring)
elif mproc.stderr in sresult:
outstring = mproc.stderr.readline().strip()
@@ -307,6 +266,56 @@
else:
break
+ fomfill = []
+ polyfill = []
+ lifill = []
+ met1fill = []
+ met2fill = []
+ met3fill = []
+ met4fill = []
+ met5fill = []
+ xtiles = 0
+ ytiles = 0
+ xfrac = 0.0
+ yfrac = 0.0
+
+ for line in dlines:
+ dpair = line.split(':')
+ if len(dpair) == 2:
+ layer = dpair[0]
+ try:
+ density = float(dpair[1].strip())
+ except:
+ continue
+ if layer == 'FOM':
+ fomfill.append(density)
+ elif layer == 'POLY':
+ polyfill.append(density)
+ elif layer == 'LI1':
+ lifill.append(density)
+ elif layer == 'MET1':
+ met1fill.append(density)
+ elif layer == 'MET2':
+ met2fill.append(density)
+ elif layer == 'MET3':
+ met3fill.append(density)
+ elif layer == 'MET4':
+ met4fill.append(density)
+ elif layer == 'MET5':
+ met5fill.append(density)
+ elif layer == 'XTILES':
+ xtiles = int(dpair[1].strip())
+ elif layer == 'YTILES':
+ ytiles = int(dpair[1].strip())
+ elif layer == 'XFRAC':
+ xfrac = float(dpair[1].strip())
+ elif layer == 'YFRAC':
+ yfrac = float(dpair[1].strip())
+
+ if ytiles == 0 or xtiles == 0:
+ print('Failed to read XTILES or YTILES from output.')
+ sys.exit(1)
+
total_tiles = (ytiles - 9) * (xtiles - 9)
print('')
@@ -337,10 +346,11 @@
base = xtiles * w + x
fomaccum += sum(fomfill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(fomaccum / atotal))
- if fomaccum < 33.0:
+ fomaccum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(fomaccum))
+ if fomaccum < 0.33:
print('***Error: FOM Density < 33%')
- elif fomaccum > 57.0:
+ elif fomaccum > 0.57:
print('***Error: FOM Density > 57%')
print('')
@@ -361,7 +371,8 @@
base = xtiles * w + x
polyaccum += sum(polyfill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(polyaccum / atotal))
+ polyaccum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(polyaccum))
print('')
print('LI Density:')
@@ -381,10 +392,11 @@
base = xtiles * w + x
liaccum += sum(lifill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(liaccum / atotal))
- if liaccum < 35.0:
+ liaccum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(liaccum))
+ if liaccum < 0.35:
print('***Error: LI Density < 35%')
- elif liaccum > 70.0:
+ elif liaccum > 0.70:
print('***Error: LI Density > 70%')
print('')
@@ -405,10 +417,11 @@
base = xtiles * w + x
met1accum += sum(met1fill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met1accum / atotal))
- if met1accum < 35.0:
+ met1accum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met1accum))
+ if met1accum < 0.35:
print('***Error: MET1 Density < 35%')
- elif met1accum > 70.0:
+ elif met1accum > 0.70:
print('***Error: MET1 Density > 70%')
print('')
@@ -429,10 +442,11 @@
base = xtiles * w + x
met2accum += sum(met2fill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met2accum / atotal))
- if met2accum < 35.0:
+ met2accum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met2accum))
+ if met2accum < 0.35:
print('***Error: MET2 Density < 35%')
- elif met2accum > 70.0:
+ elif met2accum > 0.70:
print('***Error: MET2 Density > 70%')
print('')
@@ -453,10 +467,11 @@
base = xtiles * w + x
met3accum += sum(met3fill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met3accum / atotal))
- if met3accum < 35.0:
+ met3accum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met3accum))
+ if met3accum < 0.35:
print('***Error: MET3 Density < 35%')
- elif met3accum > 70.0:
+ elif met3accum > 0.70:
print('***Error: MET3 Density > 70%')
print('')
@@ -477,10 +492,11 @@
base = xtiles * w + x
met4accum += sum(met4fill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met4accum / atotal))
- if met4accum < 35.0:
+ met4accum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met4accum))
+ if met4accum < 0.35:
print('***Error: MET4 Density < 35%')
- elif met4accum > 70.0:
+ elif met4accum > 0.70:
print('***Error: MET4 Density > 70%')
print('')
@@ -501,11 +517,77 @@
base = xtiles * w + x
met5accum += sum(met5fill[base : base + 10])
- print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met5accum / atotal))
- if met5accum < 45.0:
+ met5accum /= atotal
+ print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met5accum))
+ if met5accum < 0.45:
print('***Error: MET5 Density < 45%')
- elif met5accum > 86.0:
- print('***Error: MET5 Density > 80%')
+ elif met5accum > 0.86:
+ print('***Error: MET5 Density > 86%')
+
+ print('')
+ print('Whole-chip density results:')
+
+ atotal = ((xtiles - 1.0) * (ytiles - 1.0)) + ((ytiles - 1.0) * xfrac) + ((xtiles - 1.0) * yfrac) + (xfrac * yfrac)
+
+ fomaccum = sum(fomfill) / atotal
+ print('')
+ print('FOM Density: ' + str(fomaccum))
+ if fomaccum < 0.33:
+ print('***Error: FOM Density < 33%')
+ elif fomaccum > 0.57:
+ print('***Error: FOM Density > 57%')
+
+ polyaccum = sum(polyfill) / atotal
+ print('')
+ print('POLY Density: ' + str(polyaccum))
+
+ liaccum = sum(lifill) / atotal
+ print('')
+ print('LI Density: ' + str(liaccum))
+ if liaccum < 0.35:
+ print('***Error: LI Density < 35%')
+ elif liaccum > 0.70:
+ print('***Error: LI Density > 70%')
+
+ met1accum = sum(met1fill) / atotal
+ print('')
+ print('MET1 Density: ' + str(met1accum))
+ if met1accum < 0.35:
+ print('***Error: MET1 Density < 35%')
+ elif met1accum > 0.70:
+ print('***Error: MET1 Density > 70%')
+
+ met2accum = sum(met2fill) / atotal
+ print('')
+ print('MET2 Density: ' + str(met2accum))
+ if met2accum < 0.35:
+ print('***Error: MET2 Density < 35%')
+ elif met2accum > 0.70:
+ print('***Error: MET2 Density > 70%')
+
+ met3accum = sum(met3fill) / atotal
+ print('')
+ print('MET3 Density: ' + str(met3accum))
+ if met3accum < 0.35:
+ print('***Error: MET3 Density < 35%')
+ elif met3accum > 0.70:
+ print('***Error: MET3 Density > 70%')
+
+ met4accum = sum(met4fill) / atotal
+ print('')
+ print('MET4 Density: ' + str(met4accum))
+ if met4accum < 0.35:
+ print('***Error: MET4 Density < 35%')
+ elif met4accum > 0.70:
+ print('***Error: MET4 Density > 70%')
+
+ met5accum = sum(met5fill) / atotal
+ print('')
+ print('MET5 Density: ' + str(met5accum))
+ if met5accum < 0.45:
+ print('***Error: MET5 Density < 45%')
+ elif met5accum > 0.86:
+ print('***Error: MET5 Density > 86%')
if not keepmode:
os.remove(magpath + '/check_density.tcl')
diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index ecfb831..0458e9e 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -1908,37 +1908,43 @@
or polyfill_fine
calma 28 28
-#---------------------------------------------------
+#---------------------------------------------------------
# LI fill
-#---------------------------------------------------
+# Note requirement that LI fill may not overlap (non-fill)
+# diff or poly.
+#---------------------------------------------------------
templayer obstruct_li_coarse allli,allpad,obsli,lifill,fillblock,fillblock4
- grow 3000
+ grow 2800
+ or alldiff,allpoly
+ grow 200
templayer lifill_coarse topbox
- # slots 0 2000 200 0 2000 200 700 0
- slots 0 2000 350 0 2000 350 700 0
+ slots 0 3000 500 0 3000 500 700 0
and-not obstruct_li_coarse
and topbox
- shrink 995
- grow 995
+ shrink 1495
+ grow 1495
templayer obstruct_li_medium allli,allpad,obsli,lifill,fillblock,fillblock4
- grow 2800
+ grow 2500
or lifill_coarse
+ grow 300
+ or alldiff,allpoly
grow 200
templayer lifill_medium topbox
- slots 0 1000 200 0 1000 200 700 0
+ slots 0 1500 500 0 1500 500 700 0
and-not obstruct_li_medium
and topbox
- shrink 495
- grow 495
+ shrink 745
+ grow 745
templayer obstruct_li_fine allli,allpad,obsli,lifill,fillblock,fillblock4
- grow 300
or lifill_coarse,lifill_medium
+ grow 300
+ or alldiff,allpoly
grow 200
templayer lifill_fine topbox
- slots 0 580 200 0 580 200 700 0
+ slots 0 580 500 0 580 500 700 0
and-not obstruct_li_fine
and topbox
shrink 285
