Commit Graph

19 Commits

Author SHA1 Message Date
Tim Edwards 7276623d3c Corrected the pull-up definition and revised the CSB definition to
match the corrected defintions (namely, pull-up is configuration
0x0801, and pull-down is configuration 0x0c01).
2022-10-05 10:02:24 -04:00
Tim Edwards aba145e0e2 Made modifications in support of changing the hard-coded default
configuration of GPIO 3 (CSB) from a standard input to a weak
pull-up input.
2022-09-27 20:58:57 -04:00
R. Timothy Edwards 80c7d29412
A minor correction the gen_gpio_defaults.py script to ensure that (#95)
it will recognize all block cell types in the gate level netlist
after having been run previously.  The former code was only looking
for numeric digits in the cell name, but the cell name suffix is
hex, not integer, and so the script needs to add a check for the
letters A-F or a-f in the cell name suffix.  This is not an
immediate issue because the two default values used are "0403" and
"1803" and happen not to have any alphabetic hex digits.  But if
it were deemed necessary to change a default, then this script
should not break.
2022-05-08 22:50:20 -07:00
Mitch Bailey 21d44910b4
Fix verilog gpio_defaults_block replacement for gpio 0-4 (#87)
* Create lvs-cvc.rst

* user_project_analog_wrapper -> user_analog_project_wrapper

* Added table

* Update lvs-cvc.rst

* Create lvs_cvc_mpw4.rst

Initial steps for LVS and CVC-RV for MPW-4 slot-002

* Update lvs_cvc_mpw4.rst

diode and short errors

* daily progress

`simple_por` changes to `caravel.v`

* Update lvs_cvc_mpw4.rst

* Changed int (truncate) to round to correct gpio_default error.

* Replace gpio_defaults_block for gpio 0-4 correctly.
Remove old versions of gpio_defaults_block 0403 and 1803.

* Removed local CVC-RV docs not ready for commit.
2022-04-23 17:57:34 -07:00
Mitch Bailey da3f77d680
Changed int (truncate) to round to correct gpio_default error. (#83) 2022-04-21 17:53:21 -07:00
R. Timothy Edwards 8aafe0cff6
Fixes an error in the gen_gpio_defaults.py script (#79)
* Fixes an error in the gen_gpio_defaults.py script that is incompatible
with the use of indexed arrays for five of the gpio_defaults_block
instances.  Previously this was handled by manually changing the names
in the layout file.  This script avoids the need for manual modification
by directly handling the indexed notation.  Also, this extends the
modifications made to the layout to include the first five defaults
blocks;  otherwise, the first five defaults blocks are not changed and
the defaults will be wrong for the housekeeping SPI pins.

* Apply automatic changes to Manifest and README.rst

Co-authored-by: RTimothyEdwards <RTimothyEdwards@users.noreply.github.com>
2022-04-20 10:31:15 -04:00
R. Timothy Edwards 99518acd15
Numerous bug fixes, ending in clean full LVS for both caravel and caravan. (#76)
* (1) Modified the .magicrc file to set a default for PDK if not set in the
environment.  (2) Fixed the user ID programming layout to not leave holes
behind when the script moves the vias around (similar to the handling of
the GPIO defaults block).  (3) Added substrate isolation to gpio_control_block
and fixed the path references to the standard cells.  (4) Fixed the four
missing routes on the Caravan top level.  (5) Reinstated the large rendered
labels for the pads on both caravel and caravan.  (6) Corrected the top
level gate-level netlist for caravan to add the missing pins to the
management core wrapper.  (7) Did the same for the caravan top level RTL.
(8) Created scripts to run full LVS including extracting the management
core wrapper and reading all gate-level verilog submodules.  (9) Moved all
of the LVS scripts to the scripts directory.

* Apply automatic changes to Manifest and README.rst

* Made the changes from pull request #73 as they did not get merged
successfully, and if merged now they will generate conflicts with
this pull request in scripts/set_user_id.py.  So it's easier to
just manually add them to this pull request.

* Apply automatic changes to Manifest and README.rst

Co-authored-by: RTimothyEdwards <RTimothyEdwards@users.noreply.github.com>
2022-04-19 19:05:27 -07:00
Tim Edwards 2f6fe69b36 Corrected the gen_gpio_defaults.py script so that it behaves
correctly no matter how the "gpio_defaults_block.mag" and
"gl/gpio_defaults_block.v" are defined.  Previously it assumed
that they both defined all bits as zero, which was not the case
for the layout.  Now both define bit value 0x0402 and the script
can flip bits either direction as needed in both verilog and
layout
2021-12-29 15:42:41 -05:00
Tim Edwards 3246e64407 Correction to the gen_gpio_defaults.py file, which was accidentally
overwriting the top-level gate-level verilog netlist with the
modified layout file contents.
2021-12-04 12:41:06 -05:00
Tim Edwards 024801ab56 Extended the gen_gpio_defaults.py script to handle modifying the
verilog gate-level netlists to match the correct GPIO default
value assignments, and modify the top level gate-level caravel.v
and caravan.v netlists to match.
2021-12-02 16:04:51 -05:00
jeffdi 91b94ad919 test gen_gpio_defaults.py 2021-11-26 15:32:13 -08:00
jeffdi fd81e0814b test gen_gpio_defaults.py 2021-11-26 15:28:03 -08:00
jeffdi b3320b7500 test gen_gpio_defaults.py 2021-11-26 14:04:00 -08:00
jeffdi 2ce03a196c test gen_gpio_defaults.py 2021-11-26 14:03:03 -08:00
jeffdi 2bd7c40946 test gen_gpio_defaults.py 2021-11-26 14:01:12 -08:00
jeffdi f996157088 test gen_gpio_defaults.py 2021-11-26 13:57:18 -08:00
Tim Edwards b0d3217280 Replaced the gpio_defaults_block_0000.mag layout with gpio_defaults_block.mag
so that it contains a valid layout after processing by Openlane (since the
verilog module is named gpio_defaults_block).  Corrected the orientation of
the defaults block layouts on the right side of Caravel and erased the
incorrect routing there.  Reinstated the copyright, user ID text, open source
logo, and Caravel logo.  Revised the gen_gpio_defaults.py script to handle
the first five GPIOs in the same way as the others, although as fixed entries
which cannot be modified by the user project designer.
2021-11-20 13:43:49 -05:00
Tim Edwards 4a27ea4c6b Finished first draft of the gen_gpio_defaults.py script, which now
makes backup copies of caravel and caravan layouts and replaces the
cell name of any gpio defaults block that is changed from the
contents of user_defines.v.  NOTE:  user_defines.v ultimately must
reside in the user project.  The Makefile should copy the user's
version into the caravel directory space before running the script,
or else the script should be rewritten to reference the user's
project area when reading user_defines.v.
2021-11-07 21:51:00 -05:00
Tim Edwards 6a93ea582d Added a script which parses the file "user_defines.v" in
verilog/rtl/, and creates all the layout files needed to represent
all unique combinations of defaults used in the file.  Not done:
Modifying the top level layout to use the correct defaults (because
the top level layout does not yet exist).
2021-11-06 21:19:42 -04:00