yosys.git
5 years agoecp5: Add ECLKSYNCB blackbox
David Shah [Wed, 13 Feb 2019 11:23:25 +0000 (11:23 +0000)]
ecp5: Add ECLKSYNCB blackbox

Signed-off-by: David Shah <dave@ds0.me>
5 years agoecp5: Full set of IO-related blackboxes
David Shah [Tue, 12 Feb 2019 12:04:41 +0000 (12:04 +0000)]
ecp5: Full set of IO-related blackboxes

Signed-off-by: David Shah <dave@ds0.me>
5 years agoecp5: Support for flipflop initialisation
David Shah [Fri, 30 Nov 2018 19:29:03 +0000 (19:29 +0000)]
ecp5: Support for flipflop initialisation

Signed-off-by: David Shah <dave@ds0.me>
5 years agoecp5: Add LSRMODE to flipflops for PRLD support
David Shah [Mon, 21 Jan 2019 12:35:22 +0000 (12:35 +0000)]
ecp5: Add LSRMODE to flipflops for PRLD support

Signed-off-by: David Shah <dave@ds0.me>
5 years agoecp5: More blackboxes
David Shah [Mon, 21 Jan 2019 12:34:34 +0000 (12:34 +0000)]
ecp5: More blackboxes

Signed-off-by: David Shah <dave@ds0.me>
5 years agoecp5: Increase threshold for ALU mapping
David Shah [Mon, 21 Jan 2019 12:33:47 +0000 (12:33 +0000)]
ecp5: Increase threshold for ALU mapping

Signed-off-by: David Shah <dave@ds0.me>
5 years agoMerge pull request #793 from whitequark/proc_clean_fix_fully_def
Clifford Wolf [Sat, 19 Jan 2019 08:31:17 +0000 (09:31 +0100)]
Merge pull request #793 from whitequark/proc_clean_fix_fully_def

proc_clean: fix fully def check to consider compare/signal length

5 years agoproc_clean: fix fully def check to consider compare/signal length.
whitequark [Fri, 18 Jan 2019 23:22:02 +0000 (23:22 +0000)]
proc_clean: fix fully def check to consider compare/signal length.

Fixes #790.

5 years agoCleanups in igloo2 example design
Clifford Wolf [Thu, 17 Jan 2019 13:54:04 +0000 (14:54 +0100)]
Cleanups in igloo2 example design

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd SF2 IO buffer insertion
Clifford Wolf [Thu, 17 Jan 2019 13:38:37 +0000 (14:38 +0100)]
Add SF2 IO buffer insertion

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoImprove Igloo2 example
Clifford Wolf [Thu, 17 Jan 2019 12:35:52 +0000 (13:35 +0100)]
Improve Igloo2 example

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd "synth_sf2 -vlog", fix "synth_sf2 -edif"
Clifford Wolf [Thu, 17 Jan 2019 12:33:45 +0000 (13:33 +0100)]
Add "synth_sf2 -vlog", fix "synth_sf2 -edif"

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd "write_edif -gndvccy"
Clifford Wolf [Thu, 17 Jan 2019 12:33:11 +0000 (13:33 +0100)]
Add "write_edif -gndvccy"

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoAdd optional nullstr argument to log_id()
Clifford Wolf [Sun, 13 Jan 2019 16:00:58 +0000 (17:00 +0100)]
Add optional nullstr argument to log_id()

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoFix handling of $shiftx in Verilog back-end
Clifford Wolf [Tue, 15 Jan 2019 09:55:27 +0000 (10:55 +0100)]
Fix handling of $shiftx in Verilog back-end

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #788 from whitequark/master
Clifford Wolf [Tue, 15 Jan 2019 08:52:01 +0000 (09:52 +0100)]
Merge pull request #788 from whitequark/master

Document $tribuf and some gates

5 years agoMerge pull request #787 from whitequark/flowmap_relax
Clifford Wolf [Tue, 15 Jan 2019 08:50:58 +0000 (09:50 +0100)]
Merge pull request #787 from whitequark/flowmap_relax

flowmap: implement depth relaxation

5 years agomanual: document some gates.
whitequark [Mon, 14 Jan 2019 16:17:25 +0000 (16:17 +0000)]
manual: document some gates.

5 years agomanual: explain $tribuf cell.
whitequark [Mon, 14 Jan 2019 16:08:58 +0000 (16:08 +0000)]
manual: explain $tribuf cell.

5 years agoImprove igloo2 example
Clifford Wolf [Tue, 8 Jan 2019 19:16:36 +0000 (20:16 +0100)]
Improve igloo2 example

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoflowmap: clean up terminology.
whitequark [Tue, 8 Jan 2019 02:05:06 +0000 (02:05 +0000)]
flowmap: clean up terminology.

  * "map": group gates into LUTs;
  * "pack": replace gates with LUTs.

This is important because we have FlowMap and DF-Map, and currently
our messages are ambiguous.

Also clean up some other log messages while we're at it.

5 years agoflowmap: implement depth relaxation.
whitequark [Fri, 4 Jan 2019 13:06:51 +0000 (13:06 +0000)]
flowmap: implement depth relaxation.

5 years agoFix typo in manual
Clifford Wolf [Mon, 7 Jan 2019 09:07:28 +0000 (10:07 +0100)]
Fix typo in manual

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoBugfix in $memrd sharing
Clifford Wolf [Mon, 7 Jan 2019 09:01:11 +0000 (10:01 +0100)]
Bugfix in $memrd sharing

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #782 from whitequark/flowmap_dfs
Clifford Wolf [Mon, 7 Jan 2019 08:47:57 +0000 (09:47 +0100)]
Merge pull request #782 from whitequark/flowmap_dfs

 flowmap: construct a max-volume max-flow min-cut, not just any one

5 years agoSwitch "bugpoint" from system() to run_command()
Clifford Wolf [Mon, 7 Jan 2019 08:45:21 +0000 (09:45 +0100)]
Switch "bugpoint" from system() to run_command()

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #783 from whitequark/bugpoint
Clifford Wolf [Mon, 7 Jan 2019 08:42:17 +0000 (09:42 +0100)]
Merge pull request #783 from whitequark/bugpoint

bugpoint: new pass

5 years agobugpoint: new pass.
whitequark [Mon, 7 Jan 2019 00:11:49 +0000 (00:11 +0000)]
bugpoint: new pass.

A typical use of `bugpoint` would involve a script with a pass under
test, e.g.:

    flowmap -relax -optarea 100

and would be invoked as:

    bugpoint -yosys ./yosys -script flowmap.ys -clean -cells

This replaces the current design with the minimal design that still
crashes the `flowmap.ys` script.

`bugpoint` can also be used to perform generic design minimization
using `select`, e.g. the following script:

    select i:* %x t:$_MUX_ %i -assert-max 0

would remove all parts of the design except for an unbroken path from
an input to an output port that goes through exactly one $_MUX_ cell.
(The condition is inverted.)

5 years agoflowmap: construct a max-volume max-flow min-cut, not just any one.
whitequark [Sun, 6 Jan 2019 19:51:37 +0000 (19:51 +0000)]
flowmap: construct a max-volume max-flow min-cut, not just any one.

5 years agoMerge pull request #780 from phire/rename_from_wire
Clifford Wolf [Sun, 6 Jan 2019 10:35:31 +0000 (11:35 +0100)]
Merge pull request #780 from phire/rename_from_wire

Rename cells based on the wires they drive.

5 years agoRename cells based on the wires they drive.
Scott Mansell [Sun, 6 Jan 2019 01:40:10 +0000 (14:40 +1300)]
Rename cells based on the wires they drive.

5 years agoAdd skeleton Yosys-Libero igloo2 example project
Clifford Wolf [Sat, 5 Jan 2019 16:02:01 +0000 (17:02 +0100)]
Add skeleton Yosys-Libero igloo2 example project

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoBugfix in Verilog string handling
Clifford Wolf [Sat, 5 Jan 2019 11:10:24 +0000 (12:10 +0100)]
Bugfix in Verilog string handling

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoflowmap: add -minlut option, to allow postprocessing with opt_lut.
whitequark [Fri, 4 Jan 2019 21:18:03 +0000 (21:18 +0000)]
flowmap: add -minlut option, to allow postprocessing with opt_lut.

5 years agoMerge pull request #777 from mmicko/achronix_cell_sim_fix
Clifford Wolf [Fri, 4 Jan 2019 14:18:18 +0000 (15:18 +0100)]
Merge pull request #777 from mmicko/achronix_cell_sim_fix

Fix cells_sim.v for Achronix FPGA

5 years agoFix cells_sim.v for Achronix FPGA
Miodrag Milanovic [Fri, 4 Jan 2019 14:15:23 +0000 (15:15 +0100)]
Fix cells_sim.v for Achronix FPGA

5 years agoRemove -m32 Verific eval lib build instructions
Clifford Wolf [Fri, 4 Jan 2019 14:03:29 +0000 (15:03 +0100)]
Remove -m32 Verific eval lib build instructions

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #776 from mmicko/unify_noflatten
Clifford Wolf [Fri, 4 Jan 2019 13:56:04 +0000 (14:56 +0100)]
Merge pull request #776 from mmicko/unify_noflatten

Unify usage of noflatten among architectures

5 years agoUpdate Verific default path
Clifford Wolf [Fri, 4 Jan 2019 13:44:35 +0000 (14:44 +0100)]
Update Verific default path

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoflowmap: cleanup for clarity. NFCI.
whitequark [Fri, 4 Jan 2019 04:54:20 +0000 (04:54 +0000)]
flowmap: cleanup for clarity. NFCI.

5 years agoUnify usage of noflatten among architectures
Miodrag Milanovic [Fri, 4 Jan 2019 10:37:25 +0000 (11:37 +0100)]
Unify usage of noflatten among architectures

5 years agoflowmap: improve debug graph output. NFC.
whitequark [Fri, 4 Jan 2019 02:46:27 +0000 (02:46 +0000)]
flowmap: improve debug graph output. NFC.

5 years agoflowmap: add link to longer version of paper. NFC.
whitequark [Fri, 4 Jan 2019 02:33:10 +0000 (02:33 +0000)]
flowmap: add link to longer version of paper. NFC.

5 years agoMerge pull request #775 from whitequark/opt_flowmap
Clifford Wolf [Thu, 3 Jan 2019 16:03:18 +0000 (17:03 +0100)]
Merge pull request #775 from whitequark/opt_flowmap

flowmap: new techmap pass

5 years agoflowmap: new techmap pass.
whitequark [Wed, 2 Jan 2019 14:09:53 +0000 (14:09 +0000)]
flowmap: new techmap pass.

5 years agoMerge pull request #770 from whitequark/opt_expr_cmp
Clifford Wolf [Wed, 2 Jan 2019 16:34:04 +0000 (17:34 +0100)]
Merge pull request #770 from whitequark/opt_expr_cmp

opt_expr: refactor and improve simplification of comparisons

5 years agoopt_expr: improve simplification of comparisons with large constants.
whitequark [Wed, 2 Jan 2019 05:04:28 +0000 (05:04 +0000)]
opt_expr: improve simplification of comparisons with large constants.

The idea behind this simplification is that a N-bit signal X being
compared with an M-bit constant where M>N and the constant has Nth
or higher bit set, it either always succeeds or always fails.

However, the existing implementation only worked with one-hot signals
for some reason. It also printed incorrect messages.

This commit adjusts the simplification to have as much power as
possible, and fixes other bugs.

5 years agoMerge pull request #755 from Icenowy/anlogic-dram-init
Clifford Wolf [Wed, 2 Jan 2019 15:28:18 +0000 (16:28 +0100)]
Merge pull request #755 from Icenowy/anlogic-dram-init

anlogic: implement DRAM initialization

5 years agoMerge branch 'master' of github.com:YosysHQ/yosys
Clifford Wolf [Wed, 2 Jan 2019 14:53:50 +0000 (15:53 +0100)]
Merge branch 'master' of github.com:YosysHQ/yosys

5 years agoMerge pull request #750 from Icenowy/anlogic-ff-init
Clifford Wolf [Wed, 2 Jan 2019 14:52:22 +0000 (15:52 +0100)]
Merge pull request #750 from Icenowy/anlogic-ff-init

Initialization of Anlogic DFFs

5 years agoMerge pull request #773 from whitequark/opt_lut_elim_fixes
Clifford Wolf [Wed, 2 Jan 2019 14:45:29 +0000 (15:45 +0100)]
Merge pull request #773 from whitequark/opt_lut_elim_fixes

opt_lut: elimination fixes

5 years agoMerge pull request #772 from whitequark/synth_lut
Clifford Wolf [Wed, 2 Jan 2019 14:44:57 +0000 (15:44 +0100)]
Merge pull request #772 from whitequark/synth_lut

synth: add k-LUT mode

5 years agoMerge pull request #771 from whitequark/techmap_cmp2lut
Clifford Wolf [Wed, 2 Jan 2019 14:43:10 +0000 (15:43 +0100)]
Merge pull request #771 from whitequark/techmap_cmp2lut

cmp2lut: new techmap pass

5 years agoImprove VerificImporter support for writes to asymmetric memories
Clifford Wolf [Wed, 2 Jan 2019 14:33:43 +0000 (15:33 +0100)]
Improve VerificImporter support for writes to asymmetric memories

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoFix VerificImporter asymmetric memories error message
Clifford Wolf [Wed, 2 Jan 2019 14:05:23 +0000 (15:05 +0100)]
Fix VerificImporter asymmetric memories error message

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #769 from whitequark/typos
Clifford Wolf [Wed, 2 Jan 2019 13:47:18 +0000 (14:47 +0100)]
Merge pull request #769 from whitequark/typos

Fix typographical and grammatical errors and inconsistencies

5 years agoFix typographical and grammatical errors and inconsistencies.
whitequark [Fri, 7 Dec 2018 19:14:07 +0000 (19:14 +0000)]
Fix typographical and grammatical errors and inconsistencies.

The initial list of hits was generated with the codespell command
below, and each hit was evaluated and fixed manually while taking
context into consideration.

    DIRS="kernel/ frontends/ backends/ passes/ techlibs/"
    DIRS="${DIRS} libs/ezsat/ libs/subcircuit"
    codespell $DIRS -S *.o -L upto,iff,thru,synopsys,uint

More hits were found by looking through comments and strings manually.

5 years agoopt_lut: reflect changes in sigmap.
whitequark [Wed, 2 Jan 2019 10:21:58 +0000 (10:21 +0000)]
opt_lut: reflect changes in sigmap.

Otherwise, some LUTs will be missed during elimination.

5 years agoopt_lut: use a worklist, and revisit cells affected by elimination.
whitequark [Wed, 2 Jan 2019 09:36:32 +0000 (09:36 +0000)]
opt_lut: use a worklist, and revisit cells affected by elimination.

5 years agoopt_lut: count eliminated cells, and set opt.did_something for them.
whitequark [Wed, 2 Jan 2019 08:40:01 +0000 (08:40 +0000)]
opt_lut: count eliminated cells, and set opt.did_something for them.

5 years agosynth_ice40: use 4-LUT coarse synthesis mode.
whitequark [Wed, 2 Jan 2019 08:25:55 +0000 (08:25 +0000)]
synth_ice40: use 4-LUT coarse synthesis mode.

5 years agosynth: add k-LUT mode.
whitequark [Wed, 2 Jan 2019 08:25:03 +0000 (08:25 +0000)]
synth: add k-LUT mode.

5 years agosynth: improve script documentation. NFC.
whitequark [Wed, 2 Jan 2019 08:05:44 +0000 (08:05 +0000)]
synth: improve script documentation. NFC.

5 years agocmp2lut: new techmap pass.
whitequark [Wed, 2 Jan 2019 07:53:31 +0000 (07:53 +0000)]
cmp2lut: new techmap pass.

5 years agoopt_expr: refactor simplification of unsigned X<onehot and X>=onehot. NFCI.
whitequark [Wed, 2 Jan 2019 04:31:20 +0000 (04:31 +0000)]
opt_expr: refactor simplification of unsigned X<onehot and X>=onehot. NFCI.

5 years agoopt_expr: refactor simplification of signed X>=0 and X<0. NFCI.
whitequark [Wed, 2 Jan 2019 03:01:25 +0000 (03:01 +0000)]
opt_expr: refactor simplification of signed X>=0 and X<0. NFCI.

5 years agoopt_expr: simplify any unsigned comparisons with all-0 and all-1.
whitequark [Wed, 2 Jan 2019 02:45:49 +0000 (02:45 +0000)]
opt_expr: simplify any unsigned comparisons with all-0 and all-1.

Before this commit, only unsigned comparisons with all-0 would be
simplified. This commit also makes the code handling such comparisons
to be more rigorous and not abort on unexpected input.

5 years agoMerge pull request #768 from whitequark/opt_lut_elim
Clifford Wolf [Tue, 1 Jan 2019 10:13:48 +0000 (11:13 +0100)]
Merge pull request #768 from whitequark/opt_lut_elim

opt_lut: eliminate LUTs evaluating to constants or inputs

5 years agoopt_lut: eliminate LUTs evaluating to constants or inputs.
whitequark [Mon, 31 Dec 2018 23:53:23 +0000 (23:53 +0000)]
opt_lut: eliminate LUTs evaluating to constants or inputs.

5 years agoFix handling of (* keep *) wires in wreduce
Clifford Wolf [Mon, 31 Dec 2018 15:34:27 +0000 (16:34 +0100)]
Fix handling of (* keep *) wires in wreduce

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #766 from Icenowy/anlogic-latches
Clifford Wolf [Mon, 31 Dec 2018 14:52:01 +0000 (15:52 +0100)]
Merge pull request #766 from Icenowy/anlogic-latches

anlogic: add latch cells

5 years agoFix 7 instances of add_share_file to add_gen_share_file
Larry Doolittle [Fri, 28 Dec 2018 16:21:53 +0000 (08:21 -0800)]
Fix 7 instances of add_share_file to add_gen_share_file

in techlibs/ecp5/Makefile.inc to permit out-of-tree builds

5 years agoSquelch a little more trailing whitespace
Larry Doolittle [Fri, 28 Dec 2018 16:24:31 +0000 (08:24 -0800)]
Squelch a little more trailing whitespace

5 years agoanlogic: add latch cells
Icenowy Zheng [Tue, 25 Dec 2018 14:47:46 +0000 (22:47 +0800)]
anlogic: add latch cells

Add latch cells to Anlogic cells replacement library by copying other
FPGAs' latch code to it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
5 years agoMerge pull request #761 from whitequark/proc_clean_partial
Clifford Wolf [Sun, 23 Dec 2018 15:16:06 +0000 (16:16 +0100)]
Merge pull request #761 from whitequark/proc_clean_partial

proc_clean: remove any empty cases, if possible to do safely

5 years agoAdd "read_ilang -[no]overwrite"
Clifford Wolf [Sun, 23 Dec 2018 14:45:09 +0000 (15:45 +0100)]
Add "read_ilang -[no]overwrite"

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge branch 'master' of github.com:YosysHQ/yosys
Clifford Wolf [Sun, 23 Dec 2018 14:44:19 +0000 (15:44 +0100)]
Merge branch 'master' of github.com:YosysHQ/yosys

5 years agoproc_clean: remove any empty cases if all cases use all-def compare.
whitequark [Sun, 23 Dec 2018 09:04:23 +0000 (09:04 +0000)]
proc_clean: remove any empty cases if all cases use all-def compare.

5 years agoMerge pull request #757 from whitequark/manual_mem
Clifford Wolf [Sat, 22 Dec 2018 19:12:18 +0000 (20:12 +0100)]
Merge pull request #757 from whitequark/manual_mem

manual: document $meminit cell and memory_* passes

5 years agoproc_clean: remove any empty cases at the end of the switch.
whitequark [Sat, 22 Dec 2018 08:58:37 +0000 (08:58 +0000)]
proc_clean: remove any empty cases at the end of the switch.

Previously, only completely empty switches were removed.

5 years agomanual: make description of $meminit ports match reality.
whitequark [Fri, 21 Dec 2018 01:26:08 +0000 (01:26 +0000)]
manual: make description of $meminit ports match reality.

5 years agoMerge pull request #758 from whitequark/tcl_script_args
Clifford Wolf [Fri, 21 Dec 2018 16:56:43 +0000 (17:56 +0100)]
Merge pull request #758 from whitequark/tcl_script_args

tcl: add support for passing arguments to scripts

5 years agoMerge pull request #759 from whitequark/memory_collect_init_x
Clifford Wolf [Fri, 21 Dec 2018 16:39:52 +0000 (17:39 +0100)]
Merge pull request #759 from whitequark/memory_collect_init_x

memory_collect: do not truncate 'x from \INIT

5 years agomemory_collect: do not truncate 'x from \INIT.
whitequark [Fri, 21 Dec 2018 02:01:27 +0000 (02:01 +0000)]
memory_collect: do not truncate 'x from \INIT.

The semantics of an RTLIL constant that has less bits than its
declared bit width is zero padding. Therefore, if the output of
memory_collect will be used for simulation, truncating 'x from
the end of \INIT will produce incorrect simulation results.

5 years agomanual: fix typos.
whitequark [Thu, 20 Dec 2018 07:59:40 +0000 (07:59 +0000)]
manual: fix typos.

5 years agotcl: add support for passing arguments to scripts.
whitequark [Thu, 20 Dec 2018 07:29:46 +0000 (07:29 +0000)]
tcl: add support for passing arguments to scripts.

5 years agomanual: document $meminit cell and memory_* passes.
whitequark [Thu, 20 Dec 2018 04:37:28 +0000 (04:37 +0000)]
manual: document $meminit cell and memory_* passes.

5 years agoanlogic: implement DRAM initialization
Icenowy Zheng [Wed, 19 Dec 2018 02:18:47 +0000 (10:18 +0800)]
anlogic: implement DRAM initialization

As the TD tool doesn't accept the DRAM cell to contain unknown values in
the initial value, the initialzation support of DRAM is previously
skipped.

Now add the support by add a new pass to determine unknown values in the
initial value.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
5 years agoMerge pull request #752 from Icenowy/anlogic-lut-cost
Clifford Wolf [Wed, 19 Dec 2018 18:52:31 +0000 (19:52 +0100)]
Merge pull request #752 from Icenowy/anlogic-lut-cost

Anlogic: let LUT5/6 have more cost than LUT4-

5 years agoMerge pull request #753 from Icenowy/anlogic-makefile-fix
Clifford Wolf [Wed, 19 Dec 2018 18:51:10 +0000 (19:51 +0100)]
Merge pull request #753 from Icenowy/anlogic-makefile-fix

anlogic: fix Makefile.inc

5 years agoMerge pull request #749 from Icenowy/anlogic-dram-fix
Clifford Wolf [Wed, 19 Dec 2018 18:48:54 +0000 (19:48 +0100)]
Merge pull request #749 from Icenowy/anlogic-dram-fix

anlogic: fix dbits of Anlogic Eagle DRAM16X4

5 years agoanlogic: fix Makefile.inc
Icenowy Zheng [Wed, 19 Dec 2018 02:23:58 +0000 (10:23 +0800)]
anlogic: fix Makefile.inc

During the addition of DRAM inferring support, the installation of
eagle_bb.v is accidentally removed.

Fix this issue.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
5 years agoAnlogic: let LUT5/6 have more cost than LUT4-
Icenowy Zheng [Wed, 19 Dec 2018 01:36:53 +0000 (09:36 +0800)]
Anlogic: let LUT5/6 have more cost than LUT4-

According to the datasheet of Anlogic Eagle FPGAs, The LUTs natively
in an Anlogic FPGA is LUT4 (in MSLICEs) and "Enhanced LUT5" (in
LSLICEs). An "Enhanced LUT5" can be divided into two LUT4s.

So a LUT5 will cost around 2x resource of a LUT4, and a LUT6 will cost
2x resource of a LUT5.

Change the -lut parameter passed to the abc command to pass this cost
info to the ABC process.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
5 years agoMinor style fixes
Clifford Wolf [Tue, 18 Dec 2018 19:02:39 +0000 (20:02 +0100)]
Minor style fixes

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoMerge pull request #748 from makaimann/add-btor-ops
Clifford Wolf [Tue, 18 Dec 2018 18:59:29 +0000 (19:59 +0100)]
Merge pull request #748 from makaimann/add-btor-ops

Add btor ops for $mul, $div, $mod and $concat

5 years agoMerge pull request #751 from daveshah1/fix_589
Clifford Wolf [Tue, 18 Dec 2018 18:55:42 +0000 (19:55 +0100)]
Merge pull request #751 from daveshah1/fix_589

memory_dff: Fix typo when checking init value

5 years agomemory_dff: Fix typo when checking init value
David Shah [Tue, 18 Dec 2018 17:40:01 +0000 (17:40 +0000)]
memory_dff: Fix typo when checking init value

Signed-off-by: David Shah <davey1576@gmail.com>
5 years agoFix segfault in AST simplify
Clifford Wolf [Tue, 18 Dec 2018 16:49:38 +0000 (17:49 +0100)]
Fix segfault in AST simplify

(as proposed by Dan Gisselquist)

Signed-off-by: Clifford Wolf <clifford@clifford.at>
5 years agoanlogic: set the init value of DFFs
Icenowy Zheng [Tue, 18 Dec 2018 07:39:02 +0000 (15:39 +0800)]
anlogic: set the init value of DFFs

As dffinit has already supported for different initialization strings
for DFFs and check for re-initialization, initialization of Anlogic
DFFs are now ready to go.

Support for set the init values of Anlogic DFFs.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
5 years agoAdd "dffinit -noreinit" parameter
Icenowy Zheng [Tue, 18 Dec 2018 15:10:40 +0000 (23:10 +0800)]
Add "dffinit -noreinit" parameter

Sometimes the FF cell might be initialized during the map process, e.g.
some FPGA platforms (Anlogic Eagle and Lattice ECP5 for example) has
only a "SR" pin for a FF for async reset, that resets the FF to the
initial value, which means the async reset value should be set as the
initial value. In this case the DFFINIT pass shouldn't reinitialize it
to a different value, which will lead to error.

Add a "-noreinit" parameter for the safeguard. If a FF is not
technically initialized before DFFINIT pass, the default value should be
set to x.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>