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add pad attributes for layout (#588)
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@laraorlandic
laraorlandic authored Sep 24, 2024
1 parent 5760310 commit ba78604
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Showing 2 changed files with 70 additions and 8 deletions.
8 changes: 7 additions & 1 deletion pad_cfg.hjson
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Original file line number Diff line number Diff line change
Expand Up @@ -8,14 +8,20 @@
// The pads contains the list of all the pads available in the design.
// Each pad is defined by its name and can have the following attributes:
// num: <number> (mandatory) - the number of pads of this type
// type: <input|output|inout> (mandatory) - the type of the pad
// type: <input|output|inout|supply> (mandatory) - the type of the pad
// num_offset: <number> (optional) - the offset to the first pad of this type (default 0)
// mapping: <top|right|bottom|left> (optional) - the mapping of the pad in the design. Useful for ASICs (default top)
// active: <low|high> (optional) - the active level of the pad (default high)
// driven_manually: <True|False> (optional) - the pad is driven manually (default False)
// mux: <dict> (optional) - the muxing options for the pad
// skip_declaration: <True|False> (optional) - skip the declaration of the pad in the top level (default False)
// keep_internal: <True|False> (optional) - keep the pad internal to the design (default False)
// layout_attributes: (optional) - collection of attributes related to the physical (ASIC) layout of the pads
// index: (mandatory) index of the pad on its side of the I/O ring
// orient: (optional) <R0|R90|R180|R270|MX|MX90|MY|MY90> - orientation of the pad
// cell: (mandatory for type "supply") <valid name of cell in the desired tech. library> - specific cell to use if not a default pad cell (ex. for VDD/VSS pads)
// offset: (optional) <float> - offset from edge (in um)
// skip: (optional) <float> - distance from neighboring pad (in um)
//
// Add this field at the same level of pads (not inside) if you want to define PADs attributes
// attributes: {
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70 changes: 63 additions & 7 deletions util/mcu_gen.py
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,7 @@ def create_pad_ring_bonding(self):
self.pad_ring_bonding_bonding += ' .' + self.signal_name + 'oe_i(' + oe_internal_signals + '),'
self.x_heep_system_interface += ' inout wire ' + self.signal_name + 'io,'

def __init__(self, name, cell_name, pad_type, pad_mapping, index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, has_attribute, attribute_bits):
def __init__(self, name, cell_name, pad_type, pad_mapping, index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, has_attribute, attribute_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip):

self.name = name
self.cell_name = cell_name
Expand Down Expand Up @@ -240,6 +240,12 @@ def __init__(self, name, cell_name, pad_type, pad_mapping, index, pad_active, pa
self.is_driven_manually = pad_driven_manually
self.do_skip_declaration = pad_skip_declaration

self.layout_index = pad_layout_index
self.layout_orient = pad_layout_orient
self.layout_cell = pad_layout_cell
self.layout_offset = pad_layout_offset
self.layout_skip = pad_layout_skip

if(len(pad_mux_list) == 0):
self.signal_name_drive.append(self.signal_name)
self.pad_type_drive.append(pad_type)
Expand Down Expand Up @@ -625,6 +631,31 @@ def len_extracted_peripherals(peripherals):
except KeyError:
pad_keep_internal = False

try:
pad_layout_orient = pads[key]['layout_attributes']['orient']
except KeyError:
pad_layout_orient = None

try:
pad_layout_cell = pads[key]['layout_attributes']['cell']
except KeyError:
pad_layout_cell = None

try:
pad_layout_offset = pads[key]['layout_attributes']['offset']
except KeyError:
pad_layout_offset = None

try:
pad_layout_skip = pads[key]['layout_attributes']['skip']
except KeyError:
pad_layout_skip = None

try:
pad_layout_index = pads[key]['layout_attributes']['index']
except KeyError:
pad_layout_index = None

pad_mux_list = []

for pad_mux in pad_mux_list_hjson:
Expand All @@ -650,13 +681,13 @@ def len_extracted_peripherals(peripherals):
except KeyError:
pad_skip_declaration_mux = False

p = Pad(pad_mux, '', pads[key]['mux'][pad_mux]['type'], pad_mapping, 0, pad_active_mux, pad_driven_manually_mux, pad_skip_declaration_mux, [], pads_attributes!=None, pads_attributes_bits)
p = Pad(pad_mux, '', pads[key]['mux'][pad_mux]['type'], pad_mapping, 0, pad_active_mux, pad_driven_manually_mux, pad_skip_declaration_mux, [], pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
pad_mux_list.append(p)

if pad_num > 1:
for p in range(pad_num):
pad_cell_name = "pad_" + key + "_" + str(p+pad_offset) + "_i"
pad_obj = Pad(pad_name + "_" + str(p+pad_offset), pad_cell_name, pad_type, pad_mapping, pad_index_counter, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits)
pad_obj = Pad(pad_name + "_" + str(p+pad_offset), pad_cell_name, pad_type, pad_mapping, pad_index_counter, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
if not pad_keep_internal:
pad_obj.create_pad_ring()
pad_obj.create_core_v_mini_mcu_ctrl()
Expand All @@ -675,7 +706,7 @@ def len_extracted_peripherals(peripherals):

else:
pad_cell_name = "pad_" + key + "_i"
pad_obj = Pad(pad_name, pad_cell_name, pad_type, pad_mapping, pad_index_counter, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits)
pad_obj = Pad(pad_name, pad_cell_name, pad_type, pad_mapping, pad_index_counter, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
if not pad_keep_internal:
pad_obj.create_pad_ring()
pad_obj.create_core_v_mini_mcu_ctrl()
Expand Down Expand Up @@ -736,6 +767,31 @@ def len_extracted_peripherals(peripherals):
except KeyError:
pad_skip_declaration = False

try:
pad_layout_orient = external_pads[key]['layout_attributes']['orient']
except KeyError:
pad_layout_orient = None

try:
pad_layout_cell = external_pads[key]['layout_attributes']['cell']
except KeyError:
pad_layout_cell = None

try:
pad_layout_offset = external_pads[key]['layout_attributes']['offset']
except KeyError:
pad_layout_offset = None

try:
pad_layout_skip = external_pads[key]['layout_attributes']['skip']
except KeyError:
pad_layout_skip = None

try:
pad_layout_index = external_pads[key]['layout_attributes']['index']
except KeyError:
pad_layout_index = None

pad_mux_list = []

for pad_mux in pad_mux_list_hjson:
Expand All @@ -761,13 +817,13 @@ def len_extracted_peripherals(peripherals):
except KeyError:
pad_skip_declaration_mux = False

p = Pad(pad_mux, '', external_pads[key]['mux'][pad_mux]['type'], pad_mapping, 0, pad_active_mux, pad_driven_manually_mux, pad_skip_declaration_mux, [], pads_attributes!=None, pads_attributes_bits)
p = Pad(pad_mux, '', external_pads[key]['mux'][pad_mux]['type'], pad_mapping, 0, pad_active_mux, pad_driven_manually_mux, pad_skip_declaration_mux, [], pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
pad_mux_list.append(p)

if pad_num > 1:
for p in range(pad_num):
pad_cell_name = "pad_" + key + "_" + str(p+pad_offset) + "_i"
pad_obj = Pad(pad_name + "_" + str(p+pad_offset), pad_cell_name, pad_type, pad_mapping, external_pad_index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits)
pad_obj = Pad(pad_name + "_" + str(p+pad_offset), pad_cell_name, pad_type, pad_mapping, external_pad_index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
pad_obj.create_pad_ring()
pad_obj.create_pad_ring_bonding()
pad_obj.create_internal_signals()
Expand All @@ -783,7 +839,7 @@ def len_extracted_peripherals(peripherals):

else:
pad_cell_name = "pad_" + key + "_i"
pad_obj = Pad(pad_name, pad_cell_name, pad_type, pad_mapping, external_pad_index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits)
pad_obj = Pad(pad_name, pad_cell_name, pad_type, pad_mapping, external_pad_index, pad_active, pad_driven_manually, pad_skip_declaration, pad_mux_list, pads_attributes!=None, pads_attributes_bits, pad_layout_index, pad_layout_orient, pad_layout_cell, pad_layout_offset, pad_layout_skip)
pad_obj.create_pad_ring()
pad_obj.create_pad_ring_bonding()
pad_obj.create_internal_signals()
Expand Down

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