| ############################################################################### |
| # CADENCE COPYRIGHT NOTICE |
| # © 2008-2013 Cadence Design Systems, Inc. All rights reserved. |
| #------------------------------------------------------------------------------ |
| # |
| # This Foundation Flow is provided as an example of how to perform specialized |
| # tasks. |
| # |
| # This work may not be copied, re-published, uploaded, or distributed in any way, |
| # in any medium, whether in whole or in part, without prior written permission |
| # from Cadence. Notwithstanding any restrictions herein, subject to compliance |
| # with the terms and conditions of the Cadence software license agreement under |
| # which this material was provided, this material may be copied and internally |
| # distributed solely for internal purposes for use with Cadence tools. |
| # |
| # This work is Cadence intellectual property and may under no circumstances be |
| # given to third parties, neither in original nor in modified versions, without |
| # explicit written permission from Cadence. The information contained herein is |
| # the proprietary and confidential information of Cadence or its licensors, and |
| # is supplied subject to, and may be used only by Cadence's current customers |
| # in accordance with, a previously executed license agreement between Cadence |
| # and its customer. |
| # |
| #------------------------------------------------------------------------------ |
| # THIS MATERIAL IS PROVIDED BY CADENCE "AS IS" AND ANY EXPRESS OR IMPLIED |
| # WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL CADENCE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL |
| # OR CONSEQUENTIAL DAMAGES HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS MATERIAL, EVEN IF |
| # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| ############################################################################### |
| |
| ########################################################################################## |
| # Low power configuration file overlay. This file contains foundation flow variables |
| # that are specific to the LP/CPF flow and should be used in addition to the setup.tcl |
| # and innovus_config.tcl files |
| ########################################################################################## |
| # Placement Options |
| # ---------------------------------------------------------------------------------------- |
| # set vars(resize_shifter_and_iso_insts) <true | false> |
| # |
| ########################################################################################## |
| # Tie cell information |
| # ---------------------------------------------------------------------------------------- |
| # The variable vars(tie_cells) is defined in the innovus_config.tcl and is used to define a |
| # "global" tie cell list. This list will be used by default for each power domain. |
| # It can be overridden for a given power domain by setting vars(<power_domain>,tie_cells). |
| # ---------------------------------------------------------------------------------------- |
| # set vars(domain,tie_cells) <tie cells for <power_domain>> |
| # |
| ########################################################################################## |
| # Filler cell information |
| # ---------------------------------------------------------------------------------------- |
| # The variable vars(filler_cells) is defined in the innovus_config.tcl and is used to define a |
| # "global" filler cell list. This list will be used by default for each power domain. |
| # It can be overridden for a given power domain by setting vars(<power_domain>,filler_cells). |
| # ---------------------------------------------------------------------------------------- |
| # set vars(domain,filler_cells) <filler cells for <power_domain>> |
| # |
| ########################################################################################## |
| # Welltap cell information |
| # ---------------------------------------------------------------------------------------- |
| # The variable vars(welltaps) is defined in the innovus_config.tcl and is used to define a |
| # "global" welltap cell list. This list will be used by default for each power domain. |
| # It can be overridden for a given power domain by setting vars(<power_domain>,welltaps). |
| # ---------------------------------------------------------------------------------------- |
| # verify_rule : maximum distance (in microns) between welltap cells and standard cells |
| # in microns |
| # max_gap : specifies the maximum distance from the right edge of one well-tap cell |
| # to the left edge of the following well-tap cell in the same row |
| # cell_interval : specifies the maximum distance from the center of one well-tap cell |
| # to the center of the following well-tap cell in the same row |
| # |
| # NOTE: max_gap and cell_interval parameters are mutually exclusive, user has to define |
| # only one of these parameters to add welltap cells |
| # |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,welltaps) <welltap cell list for <power_domain>> |
| # set vars(<power_domain>,welltaps,checkerboard) <true or false> |
| # set vars(<power_domain>,welltaps,max_gap) <max gap in microns> |
| # set vars(<power_domain>,welltaps,cell_interval) <cell interval in microns> |
| # set vars(<power_domain>,welltaps,row_offset) <row offset in microns> |
| # set vars(<power_domain>,welltaps,verify_rule) <verify rule distance> |
| # |
| ########################################################################################## |
| # Endcap cell information |
| # ---------------------------------------------------------------------------------------- |
| # The variables vars(pre_endcap) and vars(post_endcap) are set in the innovus_config.tcl file and |
| # are used to define "global" endcap cells. These used by default for each power domain. |
| # They can be overridden for a given power domain setting vars(<power_domain>,pre_endcap) |
| # and/or vars(<power_domain>,post_endcap). |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,pre_endcap) <pre endcap cell for <power_domain>> |
| # set vars(<power_domain>,post_endcap) <post endcap cell for <power_domain>> |
| # |
| ########################################################################################## |
| # Always on net buffering |
| # ---------------------------------------------------------------------------------------- |
| # By default SOCE does always-on-net synthesis for SRPG control signal and PSO enable |
| # signals as part of optDesign -preCTS, but this can be manually done for specific nets if |
| # necessary. To do this, define the following variables and uncomment the pre_prects.tcl |
| # plug-in template |
| # ---------------------------------------------------------------------------------------- |
| # set vars(always_on_buffers) <list of always on buffers> |
| # set vars(always_on_nets) <list of always on nets> |
| # set vars(always_on_nets,max_fanout) <max fanout limit for always on nets> (optional) |
| # set vars(always_on_nets,max_tran) <max transition on always on nets> (optional) |
| # set vars(always_on_nets,max_skew) <max skew for always on nets> (optional) |
| # set vars(always_on_nets,max_delay) <max delay for always on nets> (optional) |
| # set vars(<power_domain>,always_on_buffers) <buffers for <power domain>> |
| # |
| ########################################################################################## |
| # Secondary power/ground routing |
| # ---------------------------------------------------------------------------------------- |
| # Automatic secondary power routing can be enabled the foundation flows by setting |
| # vars(route_secondary_pg_nets) to true and providing cell pin pair information to |
| # identify the connections requiring routing (PTBUFFD1:TVDD LVLLHCD4:VDDL, e.g.) |
| # ---------------------------------------------------------------------------------------- |
| # set vars(route_secondary_pg_nets) [true | false] |
| # set vars(secondary_pg,cell_pin_pairs) <secondary power cell pin pair list> |
| # ---------------------------------------------------------------------------------------- |
| #In addition, the following can optionally defined either globally or per p/g net |
| # ---------------------------------------------------------------------------------------- |
| # set vars(secondary_pg,max_fanout) <max fanout for secondary power routing> |
| # set vars(secondary_pg,pattern) <secondary power routing pattern trunk | steiner> |
| # set vars(secondary_pg,non_default_rule) <non-default rule for secondary p/g/ routing> |
| # ---------------------------------------------------------------------------------------- |
| # To optionally override for a given p/g net(s), use the vars(route_secondary_pg_nets) to |
| # define the list of nets to be overridden and then override vars(<p/g net>,<option>) |
| # ---------------------------------------------------------------------------------------- |
| # set vars(secondary_pg,nets) <list of power/ground nets> |
| # set vars(<p/g_net>,max_fanout) <max fanout> |
| # set vars(<p/g_net>,pattern) <trunk | steiner> |
| # set vars(<p/g_net>,non_default_rule) <non default rule> |
| # |
| ########################################################################################## |
| # runCLP options |
| # ---------------------------------------------------------------------------------------- |
| # set vars(clp_options) <options for runCLP> |
| # ---------------------------------------------------------------------------------------- |
| # set vars(clp_options) "" |
| # |
| ########################################################################################## |
| # Modify power domains, row creation for power domains |
| # ---------------------------------------------------------------------------------------- |
| # The foundation flows contain a sample post_init_tcl (PLUG/post_init.tcl) plug-in to do |
| # power domain modification automatically based on the folloing variables: |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,bbox) <llx lly urx ury>; bondary coordinates in microns |
| # set vars(<power_domain>,rs_exts) <top bot left right>; distance in microns |
| # set vars(<power_domain>,min_gaps) <top bot left right>; distance in microns |
| # |
| ########################################################################################## |
| # Power Shut-off Planning |
| # ---------------------------------------------------------------------------------------- |
| # The foundation flows contain a sample post_init_tcl (PLUG/post_init.tcl) plug-in to do |
| # power switch insertion automatically based on the following information: |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,switchable) <true | false> |
| # set vars(<power_domain>,switch_type) <column | ring> |
| # set vars(<power_domain>,switch_cell) <PSO cell name> |
| # set vars(<power_domain>,input_enable_pin) <PSO cell input enable pin> |
| # set vars(<power_domain>,output_enable_pin) <PSO cell output enable pin> |
| # set vars(<power_domain>,input_enable_net) <PSO cell input enable net> |
| # set vars(<power_domain>,output_enable_net) <PSO cell output enable net> |
| # set vars(<power_domain>,switch_instance) <switchModuleInstance> |
| # set vars(<power_domain>,top_offset) <top offset in microns> |
| # set vars(<power_domain>,bottom_offset) <bottom offset in microns> |
| # set vars(<power_domain>,right_offset) <right offset in microns> |
| # set vars(<power_domain>,left_offset) <left offset in microns> |
| # ---------------------------------------------------------------------------------------- |
| # Below variables are for column based pso implemetation |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,checker_board) <true | false> |
| # set vars(<power_domain>,horizonal_pitch) <in microns> |
| # set vars(<power_domain>,column_height) <Switch cell column height in microns> |
| # set vars(<power_domain>,skip_rows) <Number of rows to skip> |
| # set vars(<power_domain>,back_to_back_chain) <true|false> |
| # ... Connects the enableNetOut at the top of a column to the enableNetIn at the top of |
| # ... the next column, and connects the enableNetOut at the bottom of the column to the |
| # ... enableNetIn at the bottom of the next column |
| # ---------------------------------------------------------------------------------------- |
| # Below variables are for ring based pso implemetation |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,top_ring) <1|0> |
| # set vars(<power_domain>,bottom_ring) <1|0> |
| # set vars(<power_domain>,right_ring) <1|0> |
| # set vars(<power_domain>,left_ring) <1|0> |
| # ... defines which side of the power domain to insert switches: |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,top_switch_cell) <pso cell name> |
| # set vars(<power_domain>,bottom_switch_cell) <pso cell name> |
| # set vars(<power_domain>,left_switch_cell) <pso cell name> |
| # set vars(<power_domain>,right_switch_cell) <pso cell name> |
| # ... define pso cell name for each side of the power domain |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,top_filler_cell) <filler cell name> |
| # set vars(<power_domain>,bottom_filler_cell) <filler cell name> |
| # set vars(<power_domain>,left_filler_cell) <filler cell name> |
| # set vars(<power_domain>,right_filler_cell) <filler cell name> |
| # set vars(<power_domain>,corner_cell_list) <corner cell name> |
| # ... define filler cell name for each side of the power domain |
| # ---------------------------------------------------------------------------------------- |
| # set vars(<power_domain>,top_switches) <"<number> -distribute"> |
| # set vars(<power_domain>,bottom_switches) <"<number> -distribute"> |
| # set vars(<power_domain>,left_switches) <"<number> -distribute"> |
| # set vars(<power_domain>,right_switches) <"<number> -distribute"> |
| # ... define the number of switches for each side of the power domain |
| ########################################################################################## |
