Commit Graph

9 Commits

Author SHA1 Message Date
Miodrag Milanović abb52f81c2
gatemate: cleanup of PLL and BUFG (#1562)
* Check SER_CLK more

* Use connectPorts

* move rewire code

* Move data structures

* move placement decision for later

* cleanups

* find working layout

* clangformat

* Inverted input on ODDR

* Fix some tests

* Copy clocks for multi die

* cleanup

* reporting

* bugfix

* handle PLL special inputs

* Fix user globals

* Proper DDR per bank and cleanup

* Add extra data for die regions and create them

* Better forced_die implementation

* Copy region to newly generated cells, and update when constrained

* Update PLL error messages

* Add TODO comment
2025-09-30 13:00:02 +02:00
Miodrag Milanovic b8d2372019 gatemate: BUFG must be optional 2025-09-10 14:42:47 +02:00
Miodrag Milanović 0399b8865e
gatemate: Enable placing RAM halfs (#1544)
* gatemate: Split BRAMs into halfs

* Cleanups

* move code arround

* optmize remapping halfs

* Name RAM cells

* fix cluster setting for cascade mode

* attach ECC pins

* rewire global clocks

* bump chip database version

* Fix KEEPER setting

* Fix conflict check

* cleanup
2025-09-02 08:03:22 +02:00
Miodrag Milanović 2d7d1e2408
gatemate: optimizations and cleanups (#1517)
* Add log output

* Optimize CC_LUT1

* Update tests

* Optimize CC_LUT2 as well

* Use init enumerations

* Merge DFF in MX4

* Move repack code

* Move ramio code to pack_cpe

* Merge LUT1/2 to ADDF inputs

* Note actual CPE ports

* Merge DFF in ADDF

* Update FF params and ports first

* Check if DFFs are compatible before merging

* Optimize DFF/Latch

* Add reporting of optimized cells

* Optimize MX2/4

* Add statistics

* Use special nets for VCC/GND to skip using name

* Add warning for carry chain split

* Merge FFs where possible

* Cleanup

* Keep statistics out for now

* Add logs for packing sections

* review fixes

---------

Co-authored-by: Lofty <dan.ravensloft@gmail.com>
2025-07-17 08:50:24 +02:00
Miodrag Milanović 84d8e1abe7
Use improved CPE model (#1503)
* CPE mapping improvements

* Use CP_OUT for adders

* Fixes

* Small fixes

* Cleanups

* Cleanup

* Cleanups

* Fixes

* Fixes

* Optimize

* Cleanup

* clangformat

* Cleanup

* Cleanup

* Bump required version of database

* Cleanup

* Resolve name conflicts

* Fix signal routing

* Make CPE_LATCH separate

* Add more timings models, need updated values

* Fixed warning

* multiplier support from lofty/gatemate-mult

* explicitly zero some params in B passthrough

* comment the relevant CPE inputs in check_multipliers

* Rename some of bels

* remove _lower from name

* refactor multiplier checking

* Revert "remove _lower from name"

This reverts commit daa1041bdf.

* Fixe net name to be unique

* Make sure we at least generate bitstream with all info

* Simplify zero

* Bounded cell type in gui

* typo fix

* Remove A passthrough inversion option

* Clean up CarryGenCell config

* Update a passthru to use new primitives

* Cleanup for adders

* Clean up MsbRoutingCell

* Cleanup

* Refactor A connection code

* Make it more as in PR #1513

* Added cplines to bpassthru and fixed constant driver for A

* Add parts

* Added comp out connections

* clangformat

* clangformat

* Clean up B passthrough connections

* wire up a bunch of intermediate signals

* Bit of cleanup

* handing of C_EN_IN

* C_EN_CIN fixes

* connect f_route to its lines

* fix cite for FRoutingCell

* fixup, oops

* connect multfab to its lines

* Commented line

* Connect CPOUTs

* Handle C_I params

* connect CINY1 for CarryGenCell

* fix carry gen CINX

* Update L2T4 model

* Updates for ADDCIN

* clangformat

* fix some issues with multfab and f_route

* look at C_I when doing inversion

* Only set some C_I signals when used

* Fix one more place

* do not use cplines so we can merge in one cell

* Cover cases that could be optimized out

* clangformat

* Cleanups

* Disable multiplier usage for now

---------

Co-authored-by: Lofty <dan.ravensloft@gmail.com>
2025-07-07 10:14:48 +02:00
Miodrag Milanović 7318d6a8ba
gatemate: Multi die support and primitives model improvement (#1501)
* SER_CLK support

* Update constids

* wip

* CLK_FEEDBACK

* Handle SER_CLK and SER_CLK_N

* clangformat

* Cleanup

* Use _ as separator for PLL CFGs

* Remove unused clocking cells

* Do not use same name for IO models

* Fix IDDR merge

* Cleanup

* Properly handle user global signals

* Move signal inversion in bitstream creation

* Start adding multi die support

* Display die location for pins used

* Do not use constant s as locations

* Cleanup SB_DRIVE handling

* Use DDR locations from chip database

* Place only in prefered die for now

* Set D2D

* Fixed typos
2025-06-18 08:32:57 +02:00
Miodrag Milanović 12f597dcd1
gatemate: propagate clock constraints on input ports (#1497) 2025-05-26 11:16:45 +02:00
Miodrag Milanović 764b5402e8
gatemate: Initial SERDES support (#1476)
* Initial SERDES support

* use static array for default values

* Split pack into multiple files

* Pre-place BUFG and related cells
2025-05-06 15:56:26 +02:00
Miodrag Milanović d6483adb4d
Gatemate FPGA initial support (#1473)
* Initial code for GateMate

* Initial work on forming bitstream

* Add CCF parsing

* Use CCF to set IO location

* Propagate errors

* Restructure code

* Add support for reading from config

* Start adding infrastructure for reading bitstream

* Fix script

* GPIO initial work

* Add IN1->RAM_O2 propagation

* Fixed typo

* Cleanup

* More parameter checks

* Add LVDS support

* Cleanup

* Keep just used connections for now

* Naive lut tree CPE pack

* Naive pack CC_DFF

* pack DFF fixes

* Handle MUX flags

* Fix DFF pack

* Prevent pass trough issues

* Cleanup

* Use device wrapper class

* Update due to API changes

* Use pin  connection aliases

* Start work on BUFG support

* Fix CC_L2T5 pack

* Add CPE input inverters

* Constrain routes to have correct inversion state

* Add clock inversion pip

* Added MX2 and MX4 support

* Fix script

* BUFG support

* debug print if route found with wrong polarity

* Some CC_DFF improvements

* Create reproducible chip database

* Simplify inversion of special signals

* Few more DFF features

* Add forgotten virtual port renames

* Handle muxes with constant inputs

* Allow inversion for muxes

* cleanup

* DFF input can be constant

* init DFF only when needed

* cleanup

* Add basic PLL support

* Add some timings

* Add USR_RSTN support

* Display few more primitives

* Use pass trough signals to validate architecture data

* Use extra tile information from chip database

* Updates needed for a build system changes

* Implement SB_DRIVE support

* Properly named configuration bits

* autogenerated constids.inc

* small fix

* Initial code for CPE halfs

* Some cleanup

* make sure FFs are compatible

* reverted due to db change

* Merge DFF where applicable

* memory allocation issue

* fix

* better MX2

* ram_i handling

* Cleanup MX4

* Support latches

* compare L_D flag as well

* Move virtual pips

* Naive addf pack

* carry chains grouping

* Keep chip database reproducible

* split addf vectors

* Block CPEs when GPIO is used

* Prepare placement code

* RAM_I/RAM_O rewrite

* fix ram_i/o index

* Display RAM and add new primitives

* PLL wip code

* CC_PLL_ADV packing

* PLL handling cleanup

* Add PLL comments

* Keep only high fan-out BUFG

* Add skeleton for tests

* Utilize move_ram_o

* GPIO wip

* GPIO wip

* PLL fixes

* cleanup

* FF_OBF support

* Handle FF_IBF

* Make SLEW FAST if not defined as in latest p_r

* Make sure FF_OBF only driving GPIO

* Moved pll calc into separate file

* IDDR handling and started ODDR

* Route DDR input for CC_ODDR

* Notify error in case ODDR or IDDR are used but not with I/O pin

* cleanup for CC_USR_RSTN

* Extract proper RAM location  for bitstream

* Code cleanup

* Allow auto place of pads

* Use clock source flag

* Configure GPIO clock signals

* Handle conflicting clk

* Use BUGF in proper order

* Connected CLK, works without but good for debugging

* CC_CFG_CTRL placement

* Group RAM data 40 bytes per row

* Write BRAM content

* RAM wip

* Use relative constraints from chipdb

* fix broken build

* Memory wip

* Handle custom clock for memories

* Support FIFO

* optimize move_ram_io

* Fix SR signal handling acorrding to findings

* set placer beta

* Pre place what we can

* Revert "debug print if route found with wrong polarity"

This reverts commit cf9ded2f18.

* Revert "Constrain routes to have correct inversion state"

This reverts commit 795c284d48.

* Remove virtual pips

* Implement post processing inversion

* ADDF add ability to route additional CO

* Merge two ADDFs in one CPE

* Added TODO

* clangformat

* Cleanup

* Add serdes handling in config file

* Cleanup

* Cleanup

* Cleanup

* Fix in PLL handling

* Fixed ADDF edge case

* No need for this

* Fix latch

* Sanity checks

* Support CC_BRAM_20K merge

* Start creating testing environment

* LVDS fixes

* Add connection helper

* Cleanup

* Fix tabs

* Formatting fix

* Remove optimization tests for now

* remove read_bitstream

* removed .c_str()

* Removed config parsing

* using snake_case

* Use bool_or_default where applicable

* refactored bitstream write code

* Add allow-unconstrained option

* Update DFF related messages

* Add clock constraint propagation

---------

Co-authored-by: Lofty <dan.ravensloft@gmail.com>
2025-04-22 16:41:01 +02:00