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correct global connections for srams #132

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merged 2 commits into from
Feb 4, 2025
Merged

correct global connections for srams #132

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9a8e8f8
correct global connections for srams
gadfort Feb 3, 2025
1cffcba
fix ihp130 power grid to account for poor sram grid
gadfort Feb 3, 2025
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5 changes: 4 additions & 1 deletion lambdapdk/asap7/libs/fakeram7.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,10 @@ def setup():
for corner in ('slow', 'fast', 'typical'):
lib.add('output', corner, 'nldm', f'{path_base}/nldm/{mem_name}.lib')

lib.set('option', 'file', 'openroad_pdngen', f'{path_base}/pdngen.tcl')
lib.set('option', 'file', 'openroad_pdngen',
f'{path_base}/apr/openroad/pdngen.tcl')
lib.set('option', 'file', 'openroad_global_connect',
f'{path_base}/apr/openroad/global_connect.tcl')

lib.set('option', 'var', 'klayout_allow_missing_cell', mem_name)

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5 changes: 5 additions & 0 deletions lambdapdk/asap7/libs/fakeram7/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
0 lambdapdk/asap7/libs/fakeram7/pdngen.tcl → ...ap7/libs/fakeram7/apr/openroad/pdngen.tcl
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5 changes: 4 additions & 1 deletion lambdapdk/freepdk45/libs/fakeram45.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,10 @@ def setup():
lib.add('output', stackup, 'lef', f'{path_base}/lef/{mem_name}.lef')
lib.add('output', corner, 'nldm', f'{path_base}/nldm/{mem_name}.lib')

lib.set('option', 'file', 'openroad_pdngen', f'{path_base}/pdngen.tcl')
lib.set('option', 'file', 'openroad_pdngen',
f'{path_base}/apr/openroad/pdngen.tcl')
lib.set('option', 'file', 'openroad_global_connect',
f'{path_base}/apr/openroad/global_connect.tcl')

lib.set('option', 'var', 'klayout_allow_missing_cell', mem_name)

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5 changes: 5 additions & 0 deletions lambdapdk/freepdk45/libs/fakeram45/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
0 ...dapdk/freepdk45/libs/fakeram45/pdngen.tcl → ...45/libs/fakeram45/apr/openroad/pdngen.tcl
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5 changes: 5 additions & 0 deletions lambdapdk/gf180/libs/gf180mcu_fd_ip_sram/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
0 ...gf180/libs/gf180mcu_fd_ip_sram/pdngen.tcl → ...180mcu_fd_ip_sram/apr/openroad/pdngen.tcl
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4 changes: 2 additions & 2 deletions lambdapdk/gf180/libs/gf180mcu_fd_sc_mcu7t5v0/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDD$} -power
add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VSS$} -ground
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
4 changes: 2 additions & 2 deletions lambdapdk/gf180/libs/gf180mcu_fd_sc_mcu9t5v0/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDD$} -power
add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VSS$} -ground
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
5 changes: 4 additions & 1 deletion lambdapdk/gf180/libs/gf180sram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,10 @@ def setup():
lib.add('output', corner, 'spice',
f'{path_base}/spice/{mem_name}.spice')

lib.set('option', 'file', 'openroad_pdngen', f'{path_base}/pdngen.tcl')
lib.set('option', 'file', 'openroad_pdngen',
f'{path_base}/apr/openroad/pdngen.tcl')
lib.set('option', 'file', 'openroad_global_connect',
f'{path_base}/apr/openroad/global_connect.tcl')

libs.append(lib)

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5 changes: 4 additions & 1 deletion lambdapdk/ihp130/libs/sg13g2_sram.py
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Expand Up @@ -26,7 +26,10 @@ def setup():
f'{path_base}/verilog/RM_IHPSG13_1P_core_behavioral_bm_bist.v')

lib.set('option', 'file', 'openroad_pdngen',
'lambdapdk/ihp130/libs/sg13g2_sram/pdngen.tcl',
'lambdapdk/ihp130/libs/sg13g2_sram/apr/openroad/pdngen.tcl',
package='lambdapdk')
lib.set('option', 'file', 'openroad_global_connect',
'lambdapdk/ihp130/libs/sg13g2_sram/apr/openroad/global_connect.tcl',
package='lambdapdk')

libs.append(lib)
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6 changes: 6 additions & 0 deletions lambdapdk/ihp130/libs/sg13g2_sram/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD!} -power
add_global_connection -net {VDD} -pin_pattern {VDDARRAY!}
add_global_connection -net {VSS} -pin_pattern {VSS!} -ground
19 changes: 19 additions & 0 deletions lambdapdk/ihp130/libs/sg13g2_sram/apr/openroad/pdngen.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
####################################
# grid for: sky130sram
####################################
define_pdn_grid -name {sg13g2_sram_R0} -voltage_domains {CORE} -macro \
-orient {R0 MX MY} \
-halo {1.0 1.0 1.0 1.0} \
-cells {RM_IHPSG13_1P_.*}
add_pdn_stripe -grid {sg13g2_sram_R0} -layer {TopMetal1} -width {2.000} -pitch {20.0} -offset {1.0}
add_pdn_connect -grid {sg13g2_sram_R0} -layers {Metal4 TopMetal1}
add_pdn_connect -grid {sg13g2_sram_R0} -layers {TopMetal1 TopMetal2}

define_pdn_grid -name {sg13g2_sram_R180} -voltage_domains {CORE} -macro \
-orient {R180} \
-halo {1.0 1.0 1.0 1.0} \
-cells {RM_IHPSG13_1P_.*}
add_pdn_stripe -grid {sg13g2_sram_R180} -layer {Metal5} -width {2.200} -pitch {22.0} -offset {11.0}
add_pdn_connect -grid {sg13g2_sram_R180} -layers {Metal4 Metal5}
add_pdn_connect -grid {sg13g2_sram_R180} -layers {Metal5 TopMetal1}
add_pdn_connect -grid {sg13g2_sram_R180} -layers {TopMetal1 TopMetal2}
10 changes: 0 additions & 10 deletions lambdapdk/ihp130/libs/sg13g2_sram/pdngen.tcl
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This file was deleted.

7 changes: 2 additions & 5 deletions lambdapdk/ihp130/libs/sg13g2_stdcell/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -1,8 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {^VDD$} -power
add_global_connection -net {VDD} -pin_pattern {^VDDPE$}
add_global_connection -net {VDD} -pin_pattern {^VDDCE$}
add_global_connection -net {VSS} -pin_pattern {^VSS$} -ground
add_global_connection -net {VSS} -pin_pattern {^VSSE$}
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
11 changes: 9 additions & 2 deletions lambdapdk/ihp130/libs/sg13g2_stdcell/apr/openroad/pdngen.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
#####################################
# standard cell grid
####################################
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {TopMetal1}
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {TopMetal2}
add_pdn_stripe -grid {grid} -layer {Metal1} -width {0.44} -followpins
set met5_pitch [expr {([lindex [ord::get_core_area] 3] - [lindex [ord::get_core_area] 1]) / 2}]
if {$met5_pitch > 75.6} {
Expand All @@ -15,6 +15,10 @@ set top1_pitch [expr {([lindex [ord::get_core_area] 2] - [lindex [ord::get_core_
if {$top1_pitch > 75.6} {
set top1_pitch 75.6
}
set top2_pitch [expr {([lindex [ord::get_core_area] 3] - [lindex [ord::get_core_area] 1]) / 2}]
if {$top2_pitch > 75.6} {
set top2_pitch 75.6
}

proc snap_grid {value} {
set grid [[ord::get_db_tech] getManufacturingGrid]
Expand All @@ -28,7 +32,10 @@ proc snap_grid {value} {

add_pdn_stripe -grid {grid} -layer {Metal5} -width {2.200} -pitch [snap_grid $met5_pitch] \
-offset [snap_grid [expr {$met5_pitch / 2}]]
add_pdn_stripe -grid {grid} -layer {TopMetal1} -width {1.800} -pitch [snap_grid $top1_pitch] \
add_pdn_stripe -grid {grid} -layer {TopMetal1} -width {2.000} -pitch [snap_grid $top1_pitch] \
-offset [snap_grid [expr {$top1_pitch / 2}]]
add_pdn_stripe -grid {grid} -layer {TopMetal2} -width {2.000} -pitch [snap_grid $top2_pitch] \
-offset [snap_grid [expr {$top2_pitch / 2}]]
add_pdn_connect -grid {grid} -layers {Metal1 Metal5}
add_pdn_connect -grid {grid} -layers {Metal5 TopMetal1}
add_pdn_connect -grid {grid} -layers {TopMetal1 TopMetal2}
8 changes: 2 additions & 6 deletions lambdapdk/sky130/libs/sky130hd/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -1,9 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VDD} -pin_pattern {VPWR}
add_global_connection -net {VDD} -pin_pattern {VPB}
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
add_global_connection -net {VSS} -pin_pattern {VGND}
add_global_connection -net {VSS} -pin_pattern {VNB}
add_global_connection -net {VDD} -pin_pattern {VPWR} -power
add_global_connection -net {VSS} -pin_pattern {VGND} -ground
6 changes: 2 additions & 4 deletions lambdapdk/sky130/libs/sky130hdll/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -1,9 +1,7 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {VDD} -power
add_global_connection -net {VDD} -pin_pattern {VPWR}
add_global_connection -net {VDD} -pin_pattern {VPWR} -power
add_global_connection -net {VDD} -pin_pattern {VPB}
add_global_connection -net {VSS} -pin_pattern {VSS} -ground
add_global_connection -net {VSS} -pin_pattern {VGND}
add_global_connection -net {VSS} -pin_pattern {VGND} -ground
add_global_connection -net {VSS} -pin_pattern {VNB}
5 changes: 4 additions & 1 deletion lambdapdk/sky130/libs/sky130sram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,10 @@ def setup():
f'{path_base}/{mem_name}/nldm/{mem_name}_TT_1p8V_25C.lib')
lib.add('output', corner, 'spice', f'{path_base}/{mem_name}/spice/{mem_name}.sp')

lib.set('option', 'file', 'openroad_pdngen', f'{path_base}/pdngen.tcl')
lib.set('option', 'file', 'openroad_pdngen',
f'{path_base}/apr/openroad/pdngen.tcl')
lib.set('option', 'file', 'openroad_global_connect',
f'{path_base}/apr/openroad/global_connect.tcl')

libs.append(lib)

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5 changes: 5 additions & 0 deletions lambdapdk/sky130/libs/sky130sram/apr/openroad/global_connect.tcl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
####################################
# global connections
####################################
add_global_connection -net {VDD} -pin_pattern {vdd} -power
add_global_connection -net {VSS} -pin_pattern {gnd} -ground
0 lambdapdk/sky130/libs/sky130sram/pdngen.tcl → ...0/libs/sky130sram/apr/openroad/pdngen.tcl
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File renamed without changes.