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Make purposes argument to gdsMill. Create prefixGDS.py script.

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This commit is contained in:
mrg
2021-06-22 14:40:43 -07:00
parent a0921b4afc
commit 8d71a98ce9
4 changed files with 65 additions and 34 deletions
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compiler/base/hierarchy_layout.py
+27 -23
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@@ -20,6 +20,10 @@ from globals import OPTS
from vector import vector
from pin_layout import pin_layout
from utils import round_to_grid
try:
from tech import special_purposes
except ImportError:
special_purposes = {}
class layout():
@@ -36,9 +40,9 @@ class layout():
# This gets set in both spice and layout so either can be called first.
self.name = name
self.cell_name = cell_name
self.gds_file = OPTS.openram_tech + "gds_lib/" + cell_name + ".gds"
self.width = None
self.height = None
self.bounding_box = None # The rectangle shape
@@ -58,7 +62,7 @@ class layout():
self.visited = []
# Flag for library cells
self.is_library_cell = False
self.gds_read()
try:
@@ -66,7 +70,7 @@ class layout():
self.pwr_grid_layer = power_grid[0]
except ImportError:
self.pwr_grid_layer = "m3"
############################################################
# GDS layout
############################################################
@@ -118,7 +122,7 @@ class layout():
if len(self.objs) > 0:
lowestx = min(min(obj.lx() for obj in self.objs if obj.name != "label"), lowestx)
lowesty = min(min(obj.by() for obj in self.objs if obj.name != "label"), lowesty)
if len(self.insts) > 0:
lowestx = min(min(inst.lx() for inst in self.insts), lowestx)
lowesty = min(min(inst.by() for inst in self.insts), lowesty)
@@ -129,7 +133,7 @@ class layout():
continue
lowestx = min(min(pin.lx() for pin in pin_set), lowestx)
lowesty = min(min(pin.by() for pin in pin_set), lowesty)
return vector(lowestx, lowesty)
def find_highest_coords(self):
@@ -138,7 +142,7 @@ class layout():
this layout
"""
highestx = highesty = -sys.maxsize - 1
if len(self.objs) > 0:
highestx = max(max(obj.rx() for obj in self.objs if obj.name != "label"), highestx)
highesty = max(max(obj.uy() for obj in self.objs if obj.name != "label"), highesty)
@@ -153,7 +157,7 @@ class layout():
continue
highestx = max(max(pin.rx() for pin in pin_set), highestx)
highesty = max(max(pin.uy() for pin in pin_set), highesty)
return vector(highestx, highesty)
def find_highest_layer_coords(self, layer):
@@ -234,7 +238,7 @@ class layout():
# This is commented out for runtime reasons
# debug.info(4, "instance list: " + ",".join(x.name for x in self.insts))
return self.insts[-1]
def get_inst(self, name):
""" Retrieve an instance by name """
for inst in self.insts:
@@ -332,7 +336,7 @@ class layout():
Return the pin or list of pins
"""
name = self.get_pin_name(text)
try:
if len(self.pin_map[name]) > 1:
debug.error("Should use a pin iterator since more than one pin {}".format(text), -1)
@@ -349,7 +353,7 @@ class layout():
Return a pin list (instead of a single pin)
"""
name = self.get_pin_name(text)
if name in self.pin_map.keys():
return self.pin_map[name]
else:
@@ -360,12 +364,12 @@ class layout():
Create a mapping from internal pin names to external pin names.
"""
self.pin_names = pin_dict
self.original_pin_names = {y: x for (x, y) in self.pin_names.items()}
def get_pin_name(self, text):
""" Return the custom cell pin name """
if text in self.pin_names:
return self.pin_names[text]
else:
@@ -373,7 +377,7 @@ class layout():
def get_original_pin_names(self):
""" Return the internal cell pin name """
# This uses the hierarchy_spice pins (in order)
return [self.get_original_pin_name(x) for x in self.pins]
@@ -383,7 +387,7 @@ class layout():
return self.original_pin_names[text]
else:
return text
def get_pin_names(self):
"""
Return a pin list of all pins
@@ -480,7 +484,7 @@ class layout():
offset=s.ll(),
width=s.width(),
height=s.height())
def replace_layout_pin(self, text, pin):
"""
Remove the old pin and replace with a new one
@@ -495,7 +499,7 @@ class layout():
offset=pin.ll(),
width=pin.width(),
height=pin.height())
def add_layout_pin(self, text, layer, offset, width=None, height=None):
"""
Create a labeled pin
@@ -777,7 +781,7 @@ class layout():
debug.info(3, "opening {}".format(self.gds_file))
self.gds = gdsMill.VlsiLayout(units=GDS["unit"])
reader = gdsMill.Gds2reader(self.gds)
reader.loadFromFile(self.gds_file)
reader.loadFromFile(self.gds_file, special_purposes)
else:
debug.info(3, "Creating layout structure {}".format(self.name))
self.gds = gdsMill.VlsiLayout(name=self.name, units=GDS["unit"])
@@ -789,7 +793,7 @@ class layout():
debug.info(4, "Printing {}".format(gds_file))
arrayCellLayout = gdsMill.VlsiLayout(units=GDS["unit"])
reader = gdsMill.Gds2reader(arrayCellLayout, debugToTerminal=1)
reader.loadFromFile(gds_file)
reader.loadFromFile(gds_file, special_purposes)
def clear_visited(self):
""" Recursively clear the visited flag """
@@ -1126,7 +1130,7 @@ class layout():
# self.add_inst(cr.name, cr)
# self.connect_inst([])
self.add_flat_inst(cr.name, cr)
def create_horizontal_channel_route(self, netlist, offset, layer_stack, directions=None):
"""
Wrapper to create a horizontal channel route
@@ -1138,7 +1142,7 @@ class layout():
# self.add_inst(cr.name, cr)
# self.connect_inst([])
self.add_flat_inst(cr.name, cr)
def add_boundary(self, ll=vector(0, 0), ur=None):
""" Add boundary for debugging dimensions """
if OPTS.netlist_only:
@@ -1331,7 +1335,7 @@ class layout():
new_name = pin.name
if not loc:
loc = pin.center()
# Hack for min area
if OPTS.tech_name == "sky130":
min_area = drc["minarea_{}".format(self.pwr_grid_layer)]
@@ -1340,7 +1344,7 @@ class layout():
else:
width = None
height = None
if pin.layer == self.pwr_grid_layer:
self.add_layout_pin_rect_center(text=new_name,
layer=self.pwr_grid_layer,