riscv
/
caravel
mirror of https://github.com/efabless/caravel.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Update ECO.rst

This commit is contained in:
Marwan Abbas 2022-11-11 19:34:12 +02:00 committed by GitHub
parent fa007d6a98
commit 8ff630aacf
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
docs/rst/ECO.rst
View File

@ -26,12 +26,21 @@ ECOs were done on top level caravel for several reasons
1. `porb_h_in` shorted with `por_l_in` because it was a floating wire
2. `mgmt_gpio_oeb` was not shorted with `mprj_io_one` in some instances of `gpio_control_block`, this is due to an issue with the router
3. To get caravel device level LVS clean, mask layer in the IO cells in the library needed modifications, can be found in `gds/caravel+io.gds`
The non-eco'd views coming out of OpenLane is postfixed by `-openlane`, for example: `gds/caravel-openlane.gds.gz`
The flow to generate caravel top level:
=======================================
After applying `scripts/create_top_pins.sh` on `caravel.mag`, the views have a postfix `-with-labels`
==================================================== ============================== ============================= ==========
Flow Input Filename Output Filename Tool
==================================================== ============================== ============================= ==========
def to mag caravel.def caravel-openlane.mag OpenLane
create_top_pins.sh caravel-openlane.mag caravel-with-label.mag magic
ECO to gpio_control_block to fix LVS issue caravel-with-label.mag caravel-eco-gpio_control.mag magic GUI
mag to GDS (build script) caravel-eco-gpio_control.mag caravel-eco-gpio_control.gds magic
ECO to gpio_control_block to fix LVS issue caravel-eco-gpio_control.gds caravel-eco-gpio_antenna.gds klayout
GDS to mag caravel-eco-gpio_antenna.gds caravel-eco-antenna.mag magic
gen_gpio_defaults.py caravel-eco-antenna.mag caravel-signoff.mag python
mag to GDS (build script) caravel-signoff.mag caravel-signoff.gds magic
==================================================== ============================== ============================= ==========
The eco'd views have postfix `-eco`
After running tapeout scripts on `caravel.mag`, the views have a postfix `-signoff`
**NOTE: caravel-eco-antenna.mag is the same as caravel.mag (this is for tracebility issues)**