Commit Graph

7 Commits

Author SHA1 Message Date
mo-hosni 7a611b799a Add substrate cut to `xres_buf`. These changes were used in the previous hardening of `caravel_core`. 2023-03-06 01:25:01 -08:00
Kareem Farid c84e1393e7
updates to top level caravel (#59)
* REVERT ME: temporarily match simple_por pin in verilog with lef

* - update configs
- add patch file for power routing def

* - update the following caravel toplevel views
    - gl
    - mag
    - def
- add caravel power routing def

* Apply automatic changes to Manifest and README.rst

* update gl mag and def for caravel

* Revert "REVERT ME: temporarily match simple_por pin in verilog with lef"

This reverts commit b70c27c69f.

* update caravel gds

* Apply automatic changes to Manifest and README.rst

* Added text and logo cells back into the caravel top level.  Put an
isolated ground marker layer on the xres_buf layout.  Corrected
the power supply pin names on the gate level verilog netlist of
simple_por in caravel.v.  Updated the copyright block text.
Corrected DRC errors in the top level routing.

Co-authored-by: Tim Edwards <tim@opencircuitdesign.com>
2022-04-08 09:31:33 -07:00
Tim Edwards e2ee74c591 Changed "simple_por" in both caravel and caravan to be an abstract
view pointing to the contents of ../gds/ so that when the assembled
chip's GDS is generated with "cif *hier write disable", the POR
will continue to have the GDS with the proper hierarchical processing.
2021-11-27 11:51:30 -05:00
Tim Edwards 08a2c90940 Made updates to correct LVS errors in caravan. Found one major error in the RTL
verilog for both caravel and caravan.  Hand-edited the RTL and GL netlists to
correct this;  still need to correct the layouts.  The error causes the user1
side clock, load, and reset buffers to drive the user2 side as well as the user1
side, making a huge mess of the routing.  Will route this by hand.
2021-11-22 22:35:52 -05:00
Tim Edwards 515b5a54f2 Updates for LVS. Only LVS issue remaining for caravel is how to get the
ground domains to extract independently.
2021-11-22 12:00:55 -05:00
Tim Edwards 6eb8bb54de Several more LVS corrections, including fixing a label in chip_io that
got removed from its net by a chang in the LEF view of an I/O pad, and
a lack of declaration of an array to attach to pwr_ctrl_out in the
verilog, which is valid verilog but netgen can't know the bus size
without the no-connect net being declared.  The remaining issue has to
do with separation of ground domains in the mgmt_protect block.
2021-11-21 22:58:39 -05:00
Tim Edwards dd66d1e5ca Renamed the poorly and awkwardly named "sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped"
cell to the simpler (and easier to remember) "xres_buf".
2021-10-31 21:43:09 -04:00