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864 Commits

Author SHA1 Message Date
Eddie Hung de79978372
xilinx: do not make DSP48E1 a whitebox for ABC9 by default (#2325) 
* xilinx: eliminate SCCs from DSP48E1 model

* xilinx: add SCC test for DSP48E1

* Update techlibs/xilinx/cells_sim.v

* xilinx: Gate DSP48E1 being a whitebox behind ALLOW_WHITEBOX_DSP48E1

Have a test that checks it works through ABC9 when enabled
 2020-09-23 09:15:24 -07:00
Marcelina Kościelnicka 9a4f420b4b Replace opt_rmdff with opt_dff. 2020-08-07 13:21:03 +02:00
Marcelina Kościelnicka 6cd135a5eb opt_expr: Remove -clkinv option, make it the default. 
Adds -noclkinv option just in case the old behavior was actually useful
to someone.
 2020-07-31 00:08:15 +02:00
Marcelina Kościelnicka 8501342fc5 synth_xilinx: Use opt_dff. 
The main part is converting xilinx_dsp to recognize the new FF types
created in opt_dff instead of trying to recognize the patterns on its
own.

The fsm call has been moved upwards because the passes cannot deal with
$dffe/$sdff*, and other optimizations don't help it much anyway.
 2020-07-30 22:26:09 +02:00
Keith Rothman 819f1d8c20 Remove EXPLICIT_CARRY logic. 
The symbiflow-arch-defs tool chain no longer needs the EXPLICIT_CARRY
within yosys itself.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2020-07-23 00:56:09 +02:00
Marcelina Kościelnicka 347dd01c2f xilinx: Fix srl regression. 
Of standard yosys cells, xilinx_srl only works on $_DFF_?_ and
$_DFFE_?P_, which get upgraded to $_SDFFE_?P?P_ by dfflegalize at the
point where xilinx_srl is called for non-abc9.  Fix this by running
ff_map.v first, resulting in FDRE cells, which are handled correctly.
 2020-07-12 23:41:27 +02:00
Marcelina Kościelnicka f313211c32 xilinx: Use dfflegalize. 2020-07-09 18:54:23 +02:00
Marcelina Kościelnicka 88e7f90663 Update dff2dffe, dff2dffs, zinit to new FF types. 2020-06-23 18:24:53 +02:00
whitequark 7191dd16f9 Use C++11 final/override keywords. 2020-06-18 23:34:52 +00:00
Eddie Hung 5b81df57c8 xilinx: tidy up cells_sim.v a little 2020-05-25 09:48:11 -07:00
Marcelina Kościelnicka aee439360b Add force_downto and force_upto wire attributes. 
Fixes #2058.
 2020-05-19 01:42:40 +02:00
Eddie Hung ca4f8c9444 xilinx: gate specify/attributes from iverilog 2020-05-14 10:33:57 -07:00
Eddie Hung 6c34945371 xilinx/ice40/ecp5: zinit requires selected wires, so select them all 2020-05-14 10:33:56 -07:00
Eddie Hung a323881e15 xilinx/ecp5/ice40: add (* abc9_flop *) to bypass-able cells 2020-05-14 10:33:56 -07:00
Eddie Hung 7cd3f4a79b abc9_ops: add -prep_bypass for auto bypass boxes; refactor 
Eliminate need for abc9_{,un}map.v in xilinx
-prep_dff_{hier,unmap} -> -prep_hier
 2020-05-14 10:33:56 -07:00
Eddie Hung 8fbb55f4ab synth_*: no need to explicitly read +/abc9_model.v 2020-05-14 10:33:56 -07:00
Eddie Hung 4cec21b93e abc9_ops: -prep_dff_map to error if async flop found 2020-05-14 10:33:56 -07:00
Eddie Hung 6c66030dfb Uncomment negative setup times; clamp to zero for connectivity 2020-05-14 10:33:56 -07:00
Eddie Hung c10757a8ea synth_xilinx: rename dff_mode -> dff 2020-05-14 10:33:56 -07:00
Eddie Hung 95763c8d18 abc9_ops: add 'dff' label for auto handling of (* abc9_flop *) boxes 2020-05-14 10:33:56 -07:00
Eddie Hung e6b55e8b38 synth_ice40/ecp5/xilinx: allow abc9.W to be overridden via scratchpad 2020-05-04 11:44:00 -07:00
Eddie Hung d2d90e4504 xilinx: improve xilinx_dffopt message 2020-04-22 16:25:23 -07:00
Marcelina Kościelnicka b4d76309e1 Use default parameter value in getParam 
Fixes #1822.
 2020-04-21 19:09:00 +02:00
Marcelina Kościelnicka 38a0c30d65 Get rid of dffsr2dff. 
This pass is a proper subset of opt_rmdff, which is called by opt, which
is called by every synth flow in the coarse part.  Thus, it never
actually does anything and can be safely removed.
 2020-04-15 16:22:37 +02:00
Eddie Hung d61a6b81fc
Merge pull request #1648 from YosysHQ/eddie/cmp2lcu 
"techmap -map +/cmp2lcu.v" for decomposing arithmetic compares to $lcu
 2020-04-03 16:28:25 -07:00
Eddie Hung 051aefc3c2 synth_xilinx: techmap +/cmp2lut.v and +/cmp2lcu.v in 'coarse' 2020-04-03 14:28:22 -07:00
Eddie Hung 956ecd48f7 kernel: big fat patch to use more ID::*, otherwise ID(*) 2020-04-02 09:51:32 -07:00
Marcin Kościelnicki 9b982e929c xilinx: Mark IOBUFDS.IOB as external pad 2020-03-20 14:37:38 +01:00
Eddie Hung 7b543fdb0c xilinx: consider DSP48E1.ADREG 2020-03-04 12:04:02 -08:00
Eddie Hung 512596760b xilinx: cleanup DSP48E1 handling for abc9 2020-03-04 11:31:12 -08:00
Eddie Hung f65fc845e5 xilinx: improve specify for DSP48E1 2020-03-04 11:31:12 -08:00
Eddie Hung 78d4fff69d xilinx: missing DSP48E1.PCIN timing from abc9_{map,model}.v 2020-03-04 11:31:12 -08:00
Eddie Hung 090e54569a Remove RAMB{18,36}E1 from cells_xtra.py 2020-02-27 10:33:04 -08:00
Eddie Hung 376319dc8d xilinx: Update RAMB* specify entries 2020-02-27 10:17:29 -08:00
Eddie Hung 3b74e0fa45 xilinx: add delays to INV 2020-02-27 10:17:29 -08:00
Eddie Hung b0ffd9cd8b Make +/xilinx/cells_sim.v legal 2020-02-27 10:17:29 -08:00
Eddie Hung 1ef1ca812b Get rid of (* abc9_{arrival,required} *) entirely 2020-02-27 10:17:29 -08:00
Eddie Hung 3ea5506f81 abc9_ops: use TimingInfo for -prep_{lut,box} too 2020-02-27 10:17:29 -08:00
Eddie Hung 7d86aceee3 Expand +/xilinx/cells_sim.v to keep ICARUS and non -specify paresr happy 2020-02-27 10:17:29 -08:00
Eddie Hung aac309626b Fix tests by gating some specify constructs from iverilog 2020-02-27 10:17:29 -08:00
Eddie Hung e22fee6cdd abc9_ops: ignore (* abc9_flop *) if not '-dff' 2020-02-27 10:17:29 -08:00
Eddie Hung 8408c13405 Update xilinx for ABC9 2020-02-27 10:17:29 -08:00
Eddie Hung ccc84f8923 Fix commented out specify statement 2020-02-27 10:17:29 -08:00
Eddie Hung 12d70ca8fb xilinx: improve specify functionality 2020-02-27 10:17:29 -08:00
Eddie Hung 577545488a xilinx: use specify blocks in place of abc9_{arrival,required} 2020-02-27 10:17:29 -08:00
Eddie Hung 0e7c55e2a7 Auto-generate .box/.lut files from specify blocks 2020-02-27 10:17:29 -08:00
Eddie Hung 74f49b1f55 abc9_ops: -prep_box, to be called once 2020-02-27 10:17:29 -08:00
Eddie Hung 5643c1b8c5 abc9_ops: -prep_lut and -write_lut to auto-generate LUT library 2020-02-27 10:17:29 -08:00
Piotr Binkowski 62ab100c61 xilinx: mark IOBUFDSE3 IOB pin as external 2020-02-27 13:15:57 +01:00
Eddie Hung 00d41905df abc9: deprecate abc9_ff.init wire for (* abc9_init *) attr 2020-02-13 12:33:58 -08:00