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774 Commits

Author SHA1 Message Date
Eddie Hung bca3cf6843 Merge branch 'master' into xaig 2019-04-08 16:31:59 -07:00
Eddie Hung 1d526b7f06 Call shregmap twice -- once for variable, another for fixed 2019-04-05 17:35:49 -07:00
Eddie Hung a5f33b5409 Move dffinit til after abc 2019-04-05 16:20:43 -07:00
Eddie Hung 0364a5d811 Merge branch 'eddie/fix_retime' into xc7srl 2019-04-05 15:46:18 -07:00
Eddie Hung 9758701574 Move techamp t:$_DFF_?N? to before abc call 2019-04-05 15:39:05 -07:00
Eddie Hung 23a6533e98 Retry 2019-04-05 15:31:54 -07:00
Eddie Hung 8b6085254a Resolve @daveshah1 comment, update synth_xilinx help 2019-04-05 15:15:13 -07:00
Eddie Hung ff0912c75e synth_xilinx to techmap FFs after abc call, otherwise -retime fails 2019-04-05 14:43:06 -07:00
Eddie Hung 544843da71 techmap inside map_cells stage 2019-04-05 12:55:52 -07:00
Eddie Hung 7b7ddbdba7 Merge branch 'map_cells_before_map_luts' into xc7srl 2019-04-04 08:13:34 -07:00
Eddie Hung e3f20b17af Missing techmap entry in help 2019-04-04 08:13:10 -07:00
Eddie Hung 2fb02247a7 Use soft-logic, not LUT3 instantiation 2019-04-04 08:10:40 -07:00
Eddie Hung 572603409c Merge branch 'map_cells_before_map_luts' into xc7srl 2019-04-04 07:54:42 -07:00
Eddie Hung d9cb787391 synth_xilinx to map_cells before map_luts 2019-04-04 07:48:13 -07:00
Eddie Hung 77755b5a66 Cleanup comments 2019-04-04 07:41:40 -07:00
Eddie Hung 736e19f02d t:$dff* -> t:$dff t:$dffe 2019-04-04 07:39:19 -07:00
Eddie Hung 0e2d929cea -nosrl meant when -nobram 2019-04-03 08:28:07 -07:00
Eddie Hung ff385a5ad0 Remove duplicate STARTUPE2 2019-04-03 08:14:09 -07:00
Eddie Hung 88630cd02c Disable shregmap in synth_xilinx if -retime 2019-04-03 07:14:20 -07:00
Miodrag Milanovic df92e9bdc2 Make nobram false by default for gowin 2019-04-02 19:21:01 +02:00
Eddie Hung f9fb05cf66 synth_xilinx to use shregmap with -minlen 3 2019-03-25 13:18:55 -07:00
Eddie Hung 46753cf89f Merge remote-tracking branch 'origin/master' into xc7srl 2019-03-22 13:10:42 -07:00
David Shah 46f6a60d58 xilinx: Add keep attribute where appropriate 
Signed-off-by: David Shah <dave@ds0.me>
 2019-03-22 13:57:17 +00:00
Eddie Hung 4cc6b3e942 Add '-nosrl' option to synth_xilinx 2019-03-21 15:04:44 -07:00
Eddie Hung 81c207fb9b Fine tune cells_map.v 2019-03-20 10:55:14 -07:00
Eddie Hung 505e4c2d59 Revert $__SHREG_ to orig; use $__XILINX_SHREG for variable length 2019-03-19 21:58:05 -07:00
Eddie Hung 5445cd4d00 Add support for variable length Xilinx SRL > 128 2019-03-19 17:44:33 -07:00
Eddie Hung ae2a625d05 Restore original synth_xilinx commands 2019-03-19 16:14:08 -07:00
Eddie Hung 9156e18f92 Fix spacing 2019-03-19 16:12:32 -07:00
Eddie Hung f239cb821e Fix INIT for variable length SRs that have been bumped up one 2019-03-19 14:54:43 -07:00
Eddie Hung 24553326dd Merge remote-tracking branch 'origin/master' into xc7srl 2019-03-19 13:11:30 -07:00
Clifford Wolf fe1fb1336b Add Xilinx negedge FFs to synth_xilinx dffinit call, fixes #873 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-19 20:30:28 +01:00
Eddie Hung fadeadb8c8 Only accept <128 for variable length, only if $shiftx exclusive 2019-03-16 08:51:13 -07:00
Eddie Hung 29a8d4745e Cleanup synth_xilinx 2019-03-15 23:01:40 -07:00
Eddie Hung 06f8f2654a Working 2019-03-15 19:13:40 -07:00
Eddie Hung e7ef7fa443 Reverse bits in INIT parameter for Xilinx, since MSB is shifted first 2019-03-14 09:38:42 -07:00
Eddie Hung af5706c2a3 Misspell 2019-03-14 09:06:56 -07:00
Eddie Hung 8af9979aab Revert "Add shregmap -init_msb_first and use in synth_xilinx" 
This reverts commit 26ecbc1aee.
 2019-03-14 09:01:48 -07:00
Eddie Hung f1a8e8a480 Merge remote-tracking branch 'origin/master' into xc7srl 2019-03-14 08:59:19 -07:00
Eddie Hung 26ecbc1aee Add shregmap -init_msb_first and use in synth_xilinx 2019-03-14 08:10:02 -07:00
Eddie Hung 79b4a275ce Fix cells_map for SRL 2019-03-14 08:09:48 -07:00
Eddie Hung edca2f1163 Move shregmap until after first techmap 2019-03-13 17:13:52 -07:00
Eddie Hung 24f129ddfb Refactor $__SHREG__ in cells_map.v 2019-03-13 16:17:54 -07:00
Clifford Wolf 9284cf92b8 Remove ice40/cells_sim.v hack to avoid warning for blocking memory writes 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-12 20:14:18 +01:00
Clifford Wolf ff4c2a14ae Fix typo in ice40_braminit help msg 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-09 13:24:55 -08:00
Clifford Wolf 2ace1b0041
Merge pull request #859 from smunaut/ice40_braminit 
iCE40 BRAM primitives init from file
 2019-03-09 13:24:10 -08:00
Sylvain Munaut 5b6f591033 ice40: Run ice40_braminit pass by default 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2019-03-08 00:15:46 +01:00
Sylvain Munaut e71055cfe8 ice40: Add ice40_braminit pass to allow initialization of BRAM from file 
This adds a INIT_FILE attribute to the SB_RAM40_4K blocks that will
initialize content from a hex file. Same behavior is imlemented in the
simulation model and in a new pass for actual synthesis

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2019-03-08 00:15:46 +01:00
Clifford Wolf 350dfd3745 Add link to SF2 / igloo2 macro library guide 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-07 09:08:26 -08:00
Clifford Wolf 8b0719d1e3 Improvements in sf2 cells_sim.v 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-06 16:18:49 -08:00
Clifford Wolf 2d2c1617ee Add sf2 techmap rules for more FF types 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-06 15:47:54 -08:00
Clifford Wolf 78762316aa Refactor SF2 iobuf insertion, Add clkint insertion 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-06 00:41:02 -08:00
Clifford Wolf da5181a3df Improvements in SF2 flow and demo 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-05 20:36:00 -08:00
Clifford Wolf bfcd46dbd3
Merge pull request #842 from litghost/merge_upstream 
Changes required for VPR place and route in synth_xilinx
 2019-03-05 15:33:19 -08:00
Clifford Wolf 724576a4e2
Merge pull request #850 from daveshah1/ecp5_warn_conflict 
ecp5: Demote conflicting FF init values to a warning
 2019-03-05 15:23:01 -08:00
Clifford Wolf 13844c7658 Use "write_edif -pvector bra" for Xilinx EDIF files 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-05 15:16:13 -08:00
Keith Rothman 228f132ec3 Revert BRAM WRITE_MODE changes. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-04 09:22:22 -08:00
David Shah 777864d02e ecp5: Demote conflicting FF init values to a warning 
Signed-off-by: David Shah <dave@ds0.me>
 2019-03-04 11:26:20 +00:00
Keith Rothman 3e16f75bc6 Revert FF models to include IS_x_INVERTED parameters. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-01 14:41:21 -08:00
Keith Rothman 5ebeca12eb Use singular for disabling of DRAM or BRAM inference. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-01 14:35:14 -08:00
Keith Rothman eccaf101d8 Modify arguments to match existing style. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-01 12:14:27 -08:00
Keith Rothman 3090951d54 Changes required for VPR place and route synth_xilinx. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-01 12:02:27 -08:00
Miodrag Milanovic ca2b3feed8 Fix ECP5 cells_sim for iverilog 2019-03-01 19:25:23 +01:00
Clifford Wolf a82a7eb42e
Merge pull request #836 from elmsfu/ice40_2bit_ram_rw_mode 
ice40: use 2 bits for READ/WRITE MODE for SB_RAM map
 2019-02-28 20:27:27 -08:00
Elms cd2902ab1f ice40: use 2 bits for READ/WRITE MODE for SB_RAM map 
EBLIF output .param will only use necessary 2 bits

Signed-off-by: Elms <elms@freshred.net>
 2019-02-28 16:23:40 -08:00
Larry Doolittle e2fc18f27b Reduce amount of trailing whitespace in code base 2019-02-28 14:58:11 -08:00
Clifford Wolf 41e5028f98
Merge pull request #794 from daveshah1/ecp5improve 
ECP5 Improvements
 2019-02-28 14:46:56 -08:00
Eddie Hung 1da0909662 Remove SRL16/32 from cells_xtra 2019-02-28 13:56:45 -08:00
Eddie Hung 73ddab6960 Add SRL16 and SRL32 sim models 2019-02-28 13:56:22 -08:00
Eddie Hung 8aab7fe7e6 Fix SRL16/32 techmap off-by-one 2019-02-28 13:56:00 -08:00
Eddie Hung fe4d6898de synth_xilinx to call shregmap with enable support 2019-02-28 11:17:13 -08:00
Eddie Hung 68f38f2ee0 synth_xilinx to use shregmap with -params too 2019-02-28 10:21:05 -08:00
Eddie Hung c9ab18889a synth_xilinx to now have shregmap call after dff2dffe 2019-02-28 09:32:29 -08:00
Eddie Hung c29f0c5048 Add techmap rule for $__SHREG_DFF_P_ to SRL16/32 2019-02-28 09:31:24 -08:00
Eddie Hung f7c7003a19 Merge remote-tracking branch 'origin/master' into xaig 2019-02-26 13:16:03 -08:00
Larry Doolittle 7a40294e93 techlibs/greenpak4/cells_map.v: Harmonize whitespace within lut module 2019-02-26 09:40:46 -08:00
Larry Doolittle 61fc411c5d Clean up some whitepsace outliers 2019-02-26 09:39:46 -08:00
David Shah fa2f595cfa ecp5: Compatibility with Migen AsyncResetSynchronizer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2019-02-25 13:24:30 +00:00
Clifford Wolf 344afdcd5f
Merge pull request #740 from daveshah1/improve_dress 
Improve ABC netname preservation
 2019-02-22 01:16:34 +01:00
Eddie Hung a8803a1519 Merge remote-tracking branch 'origin/master' into xaig 2019-02-21 11:23:00 -08:00
Clifford Wolf 2fe1c830eb Bugfix in ice40_dsp 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-21 13:28:46 +01:00
Eddie Hung 45ddd9066e synth to take -abc9 argument 2019-02-20 11:08:49 -08:00
Clifford Wolf 84999a7e68 Add ice40 test_dsp_map test case generator 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-20 17:18:59 +01:00
Clifford Wolf 218e9051bb Add "synth_ice40 -dsp" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-20 16:42:27 +01:00
Clifford Wolf 7bf4e4a185 Improve iCE40 SB_MAC16 model 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-20 12:55:20 +01:00
Eddie Hung f9af902532 Merge branch 'master' into xaig 2019-02-19 14:20:04 -08:00
David Shah bb56cb738d ecp5: Add DDRDLLA 
Signed-off-by: David Shah <davey1576@gmail.com>
 2019-02-19 19:34:37 +00:00
David Shah c36f15b489 ecp5: Add DELAYF/DELAYG blackboxes 
Signed-off-by: David Shah <davey1576@gmail.com>
 2019-02-19 14:10:43 +00:00
Clifford Wolf 62493c91b2 Add first draft of functional SB_MAC16 model 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-19 14:47:27 +01:00
Eddie Hung 323dd0e608 synth_ice40 to have new -abc9 arg 2019-02-14 13:19:27 -08:00
David Shah e0bc190879 ecp5: Add ECLKSYNCB blackbox 
Signed-off-by: David Shah <dave@ds0.me>
 2019-02-13 11:23:25 +00:00
David Shah 7913baedd8 ecp5: Full set of IO-related blackboxes 
Signed-off-by: David Shah <dave@ds0.me>
 2019-02-12 12:04:41 +00:00
Eddie Hung e8f4dc739c Cope WIDTH of ff/latch cells is default of zero 2019-02-06 15:51:12 -08:00
Eddie Hung 742b4e01b4 Add INIT parameter to all ff/latch cells 2019-02-06 14:16:26 -08:00
David Shah 95789c6136 ecp5: Use abc -dress 
Signed-off-by: David Shah <davey1576@gmail.com>
 2019-02-06 22:23:13 +01:00
David Shah 7ef2333497 ice40: Use abc -dress in synth_ice40 
Signed-off-by: David Shah <davey1576@gmail.com>
 2019-02-06 22:23:13 +01:00
Miodrag Milanovic 0de328da8f Fixed Anlogic simulation model 2019-01-25 19:25:25 +01:00
David Shah 549b8e74b2 ecp5: Support for flipflop initialisation 
Signed-off-by: David Shah <dave@ds0.me>
 2019-01-22 16:02:56 +00:00
David Shah ee8c9e854f ecp5: Add LSRMODE to flipflops for PRLD support 
Signed-off-by: David Shah <dave@ds0.me>
 2019-01-21 12:35:22 +00:00
David Shah d8003e87d1 ecp5: More blackboxes 
Signed-off-by: David Shah <dave@ds0.me>
 2019-01-21 12:34:34 +00:00
David Shah 01ea72f53a ecp5: Increase threshold for ALU mapping 
Signed-off-by: David Shah <dave@ds0.me>
 2019-01-21 12:33:47 +00:00
Clifford Wolf db5765b443 Add SF2 IO buffer insertion 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-01-17 14:38:37 +01:00
Clifford Wolf 841ca74c90 Add "synth_sf2 -vlog", fix "synth_sf2 -edif" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-01-17 13:33:45 +01:00
Clifford Wolf e041ae3c6d
Merge pull request #777 from mmicko/achronix_cell_sim_fix 
Fix cells_sim.v for Achronix FPGA
 2019-01-04 15:18:18 +01:00
Miodrag Milanovic 50ef4561d4 Fix cells_sim.v for Achronix FPGA 2019-01-04 15:15:23 +01:00
Miodrag Milanovic 3b17c9018a Unify usage of noflatten among architectures 2019-01-04 11:37:25 +01:00
Clifford Wolf 56ca1e6afc
Merge pull request #755 from Icenowy/anlogic-dram-init 
anlogic: implement DRAM initialization
 2019-01-02 16:28:18 +01:00
Clifford Wolf 979de95cf6
Merge pull request #750 from Icenowy/anlogic-ff-init 
Initialization of Anlogic DFFs
 2019-01-02 15:52:22 +01:00
Clifford Wolf da1c8d8d3d
Merge pull request #772 from whitequark/synth_lut 
synth: add k-LUT mode
 2019-01-02 15:44:57 +01:00
Clifford Wolf 00330c741a
Merge pull request #771 from whitequark/techmap_cmp2lut 
cmp2lut: new techmap pass
 2019-01-02 15:43:10 +01:00
whitequark efa278e232 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.
 2019-01-02 13:12:17 +00:00
whitequark 17b2831356 synth_ice40: use 4-LUT coarse synthesis mode. 2019-01-02 08:25:55 +00:00
whitequark 18174202a9 synth: add k-LUT mode. 2019-01-02 08:25:03 +00:00
whitequark fdff32dd73 synth: improve script documentation. NFC. 2019-01-02 08:05:44 +00:00
whitequark a91892bba4 cmp2lut: new techmap pass. 2019-01-02 07:53:31 +00:00
Clifford Wolf e09e49ca54
Merge pull request #766 from Icenowy/anlogic-latches 
anlogic: add latch cells
 2018-12-31 15:52:01 +01:00
Larry Doolittle ebe9351f82 Fix 7 instances of add_share_file to add_gen_share_file 
in techlibs/ecp5/Makefile.inc to permit out-of-tree builds
 2018-12-29 12:53:12 +01:00
Icenowy Zheng 1b36944299 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>
 2018-12-25 22:47:46 +08:00
Icenowy Zheng 90d00182cf 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>
 2018-12-20 07:56:15 +08:00
Clifford Wolf 93d44bb9a6
Merge pull request #752 from Icenowy/anlogic-lut-cost 
Anlogic: let LUT5/6 have more cost than LUT4-
 2018-12-19 19:52:31 +01:00
Clifford Wolf c98d44ac12
Merge pull request #753 from Icenowy/anlogic-makefile-fix 
anlogic: fix Makefile.inc
 2018-12-19 19:51:10 +01:00
Icenowy Zheng 3993ba71f7 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>
 2018-12-19 10:23:58 +08:00
Icenowy Zheng c9513c695a 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>
 2018-12-19 09:36:53 +08:00
Icenowy Zheng 4bf8ac728c 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>
 2018-12-18 23:16:37 +08:00
Icenowy Zheng 7854d5ba21 anlogic: fix dbits of Anlogic Eagle DRAM16X4 
The dbits of DRAM16X4 is wrong set to 2, which leads to waste of DRAM
bits.

Fix the dbits number in the RAM configuration.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
 2018-12-18 14:38:44 +08:00
Icenowy Zheng d53a2bd1d3 anlogic: add support for Eagle Distributed RAM 
The MSLICEs on the Eagle series of FPGA can be configured as Distributed
RAM.

Enable to synthesis to DRAM.

As the Anlogic software suite doesn't support any 'bx to exist in the
initializtion data of DRAM, do not enable the initialization support of
the inferred DRAM.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
 2018-12-17 23:20:40 +08:00
Icenowy Zheng 634d7d1c14 Revert "Leave only real black box cells" 
This reverts commit 43030db5ff.

For a synthesis tool, generating EG_LOGIC cells are a good choice, as
they can be furtherly optimized when PnR, although sometimes EG_LOGIC is
not as blackbox as EG_PHY cells (because the latter is more close to the
hardware implementation).

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
 2018-12-17 23:20:40 +08:00
Clifford Wolf 5fa5dbbdda Rename "fine:" label to "map:" in "synth_ice40" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-12-16 16:36:19 +01:00
Clifford Wolf 2a681909df
Merge pull request #724 from whitequark/equiv_opt 
equiv_opt: new command, for verifying optimization passes
 2018-12-16 15:54:26 +01:00
Clifford Wolf ceffa66dbd
Merge pull request #730 from smunaut/ffssr_dont_touch 
ice40: Honor the "dont_touch" attribute in FFSSR pass
 2018-12-16 15:50:42 +01:00
Clifford Wolf 0c69f1d777
Merge pull request #725 from olofk/ram4k-init 
Only use non-blocking assignments of SB_RAM40_4K for yosys
 2018-12-16 15:42:04 +01:00
Sylvain Munaut add6ab9b2a ice40: Honor the "dont_touch" attribute in FFSSR pass 
This is useful if you want to place FF manually ... can't merge SR in those
because it might make the manual placement invalid

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-12-08 22:46:28 +01:00
whitequark 7ff5a9db2d equiv_opt: pass -D EQUIV when techmapping. 
This allows avoiding techmap crashes e.g. because of large memories
in white-box cell models.
 2018-12-07 17:20:34 +00:00
Olof Kindgren 889297c62a Only use non-blocking assignments of SB_RAM40_4K for yosys 
In an initial statement, blocking assignments are normally used
and e.g. verilator throws a warning if non-blocking ones are used.

Yosys cannot however properly resolve the interdependencies if
blocking assignments are used in the initialization of SB_RAM_40_4K
and thus this has been used.

This patch will change to use non-blocking assignments only for yosys
 2018-12-06 21:45:59 +01:00
whitequark 6e559ee3c7 synth_ice40: split `map_gates` off `fine`. 2018-12-06 12:04:39 +00:00
whitequark d9fa4387c9 synth_ice40: add -noabc option, to use built-in LUT techmapping. 
This should be combined with -relut to get sensible results.
 2018-12-05 17:13:46 +00:00
whitequark 9ef078848a gate2lut: new techlib, for converting Yosys gates to FPGA LUTs. 2018-12-05 17:13:27 +00:00
whitequark 12596b5003 Fix typo. 2018-12-05 17:13:27 +00:00
Clifford Wolf e115303129
Merge pull request #713 from Diego-HR/master 
Changes in GoWin synth commands and ALU primitive support
 2018-12-05 09:08:30 -08:00
Clifford Wolf 1a260ce89b
Merge pull request #712 from mmicko/anlogic-support 
Initial support for Anlogic FPGA
 2018-12-05 09:08:04 -08:00
whitequark 45cb6200af opt_lut: add -dlogic, to avoid disturbing logic such as carry chains. 2018-12-05 16:30:37 +00:00
whitequark ea4870b126 synth_ice40: add -relut option, to run ice40_unlut and opt_lut. 2018-12-05 16:30:37 +00:00
whitequark 1719aa88ac Extract ice40_unlut pass from ice40_opt. 
Currently, `ice40_opt -unlut` would map SB_LUT4 to $lut and convert
them back to logic immediately. This is not desirable if the goal
is to operate on $lut cells. If this is desirable, the same result
as `ice40_opt -unlut` can be achieved by running simplemap and opt
after ice40_unlut.
 2018-12-05 16:30:24 +00:00
Diego H 819ca73096 Changes in GoWin synth commands and ALU primitive support 2018-12-03 20:08:35 -06:00
Miodrag Milanovic 43030db5ff Leave only real black box cells 2018-12-02 11:57:50 +01:00
Miodrag Milanovic 83bce9f59c Initial support for Anlogic FPGA 2018-12-01 18:28:54 +01:00
Sylvain Munaut 3e5ab50a73 ice40: Add option to only use CE if it'd be use by more than X FFs 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-27 21:50:42 +01:00
Clifford Wolf dbc4cb8f4a
Merge pull request #697 from eddiehung/xilinx_ps7 
Add support for PS7 block for Xilinx
 2018-11-12 09:09:22 +01:00
Clifford Wolf 317cc9c2b7
Merge pull request #695 from daveshah1/ecp5_bb 
ecp5: Adding some blackbox cells
 2018-11-12 09:08:49 +01:00
Eddie Hung 99a14b0e37 Add support for Xilinx PS7 block 2018-11-10 12:45:07 -08:00