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23 Commits

Author SHA1 Message Date
Eddie Hung 12c692f6ed Revert "Merge pull request #1280 from YosysHQ/revert-1266-eddie/ice40_full_adder" 
This reverts commit c851dc1310, reversing
changes made to f54bf1631f.
 2019-08-12 12:06:45 -07:00
David Shah f9020ce2b3
Revert "Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER" 2019-08-10 17:14:48 +01:00
Eddie Hung ea8ac8fd74 Remove ice40_unlut 2019-08-07 16:29:38 -07:00
Eddie Hung 9278192efe Also update Makefile.inc 2019-04-18 09:58:34 -07:00
Eddie Hung 8fd455c910 Update Makefile.inc too 2019-04-17 15:19:48 -07:00
Eddie Hung 6f3e5297db Add "-device" argument to synth_ice40 2019-04-17 15:04:46 -07:00
Eddie Hung 1eade06671 Also update Makefile.inc 2019-04-17 12:27:02 -07:00
Eddie Hung 7980118d74 Add ice40 box files 2019-04-16 16:39:30 -07:00
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
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
Clifford Wolf 6fe3d5a1cf Added synth_ice40 support for latches via logic loops 2016-05-06 23:02:37 +02:00
Clifford Wolf 0793f1b196 Added ice40_ffinit pass 2015-11-26 18:11:06 +01:00
Clifford Wolf c475deec6c Switched to Python 3 2015-08-22 09:59:33 +02:00
Clifford Wolf 9596fe74de Another bugfix for ice40 and xilinx brams_init make rules 2015-08-16 21:39:34 +02:00
Clifford Wolf aedcfd6fd3 Fixed Makefile rules for generated share files 2015-08-16 21:15:07 +02:00
Clifford Wolf e4ef000b70 Adjust makefiles to work with out-of-tree builds 
This is based on work done by Larry Doolittle
 2015-08-12 15:04:44 +02:00
Clifford Wolf 61512b6f41 Verific build fixes 2015-05-17 08:19:52 +02:00
Clifford Wolf 8d4a675f91 Added iCE40 const folding support for SB_CARRY 2015-04-27 08:38:14 +02:00
Clifford Wolf 752851954b Initialization support for all iCE40 bram modes 2015-04-26 08:39:31 +02:00
Clifford Wolf d6f7698f59 Added ice40 bram support 2015-04-24 00:06:50 +02:00
Clifford Wolf f78fa718be Added ice40 SB_CARRY support 2015-04-18 09:33:08 +02:00
Clifford Wolf 661b647559 Added mapping of synchronous set/reset to iCE40 flow 2015-04-17 11:54:25 +02:00
Clifford Wolf 42d5d94a5d Added very first version of "synth_ice40" 2015-03-05 20:37:55 +01:00