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3652 Commits

Author SHA1 Message Date
Andrew Zonenberg 7b3966714c Implemented off-chain support for extract_reduce 2017-09-15 13:59:18 -07:00
Andrew Zonenberg 3404934c9c extract_reduce now only removes the head of the chain, relying on "clean" to delete upstream cells. Added "-allow-off-chain" flag, but it's currently ignored. 2017-09-15 13:59:05 -07:00
Clifford Wolf 5c4ea1366f Merge branch 'master' of github.com:cliffordwolf/yosys 2017-09-15 21:28:16 +02:00
Clifford Wolf 76c11d7454 Update ABC to hg rev cd6984ee82d4 2017-09-15 21:25:59 +02:00
Clifford Wolf ce78717e36 Merge pull request #412 from azonenberg/reduce-fixes 
extract_reduce: Fix segfault on "undriven" inputs
 2017-09-14 22:36:25 +02:00
Robert Ou ab1bf8d661 extract_reduce: Fix segfault on "undriven" inputs 
This is easily triggered when un-techmapping if the technology-specific
cell library isn't loaded. Outputs of technology-specific cells will be
seen as inputs, and nets using those outputs will be seen as undriven.
Just ignore these cells because they can't be part of a reduce chain
anyways.
 2017-09-14 12:54:44 -07:00
Clifford Wolf 498526cc0b Merge pull request #411 from azonenberg/counter-extraction-fixes 
Various improvements and bug fixes to extract_counter
 2017-09-14 21:44:26 +02:00
Clifford Wolf b0b2f3fe29 Merge pull request #410 from azonenberg/opt_demorgan 
Added "opt_demorgan" pass (fixes #408)
 2017-09-14 21:42:34 +02:00
Andrew Zonenberg 66e8986ae7 Minor changes to opt_demorgan requested during code review 2017-09-14 10:35:25 -07:00
Andrew Zonenberg 367d6b2194 Fixed bug where counter extraction on non-GreenPAK devices incorrectly handled parallel counter output 2017-09-14 10:27:10 -07:00
Andrew Zonenberg c8f2f082c6 Added support for inferring counters with reset to full scale instead of zero 2017-09-14 10:26:43 -07:00
Andrew Zonenberg 122532b7e1 Added RESET_TO_MAX parameter to $__COUNT_ cell. Cannot yet be extracted. 2017-09-14 10:26:32 -07:00
Andrew Zonenberg 0484ad666d Added support for inferring counters with active-low reset 2017-09-14 10:26:21 -07:00
Andrew Zonenberg a84172b23b Initial support for extraction of counters with clock enable 2017-09-14 10:26:10 -07:00
Andrew Zonenberg c4a70a8cc3 Fixed typo in comment. Fixed bug where extract_counter would create up counters when it meant to create down counters. 2017-09-14 10:25:51 -07:00
Andrew Zonenberg 6da5d36968 Initial version of opt_demorgan is functioning for AND/OR gates. Not the prettiest results for bus inputs, but this can be improved 2017-09-12 18:47:46 -07:00
Clifford Wolf f9d023c53f Add src attribute to extra cells generated by proc_dlatch 2017-09-09 10:18:08 +02:00
Clifford Wolf 13eb47c692 Add src arguments to all cell creator helper functions 2017-09-09 10:16:48 +02:00
Clifford Wolf 7d41c5e177 Further improve extract_fa (but still buggy) 2017-09-02 16:39:17 +02:00
Clifford Wolf 2f75240e36 Merge pull request #406 from azonenberg/coolrunner-techmap 
Coolrunner techmapping improvements
 2017-09-02 13:43:51 +02:00
Clifford Wolf 3331c281db Merge pull request #405 from azonenberg/gpak-refactoring 
Gpak refactoring
 2017-09-02 13:43:36 +02:00
Robert Ou 5f65e24ccb coolrunner2: Finish fixing special-use p-terms 2017-09-01 07:22:16 -07:00
Robert Ou fa04366f38 coolrunner2: Generate a feed-through AND term when necessary 2017-09-01 07:22:01 -07:00
Robert Ou 6775177171 coolrunner2: Initial fixes for special p-terms 
Certain signals can only be controlled by a product term and not a
sum-of-products. Do the initial work for fixing this.
 2017-09-01 07:21:51 -07:00
Robert Ou 7f08be4304 coolrunner2: Fix mapping of flip-flops 2017-09-01 07:21:39 -07:00
Robert Ou ac84f47829 coolrunner2: Combine some for loops together 2017-09-01 07:21:31 -07:00
Andrew Zonenberg 40021d2fd8 Fixed typo in error message 2017-09-01 06:45:10 -07:00
Andrew Zonenberg fc0c7f74dc Added blackbox $__COUNT_ cell model 2017-09-01 06:44:28 -07:00
Andrew Zonenberg 80aaf50302 Refactoring: moved modules still in cells_sim to cells_sim_wip 2017-09-01 06:44:15 -07:00
Clifford Wolf 18609f3df8 Merge branch 'master' of github.com:cliffordwolf/yosys 2017-09-01 12:35:09 +02:00
Clifford Wolf 307dc55d65 Merge branch 'ChipScan-master' 2017-09-01 12:33:47 +02:00
Clifford Wolf 8a66bd30c6 Update more stuff to use get_src_attribute() and set_src_attribute() 2017-09-01 12:26:55 +02:00
Jason Lowdermilk 8dc6083de7 updated to use get_src_attribute() and set_src_attribute(). 2017-08-31 14:51:56 -06:00
Clifford Wolf c9a4feba6a Merge pull request #399 from azonenberg/counter-extraction 
Refactored counter extraction to not be GreenPAK specific. Fixes #396.
 2017-08-31 17:54:28 +02:00
Andrew Zonenberg 16043b79b6 Merge branch 'counter-extraction' of github.com:azonenberg/yosys into counter-extraction 2017-08-30 18:16:15 -07:00
Andrew Zonenberg ed1e3ed39b extract_counter: Added optimizations to remove unused high-order bits 2017-08-30 18:15:12 -07:00
Andrew Zonenberg 06754108fc Merge branch 'master' of https://github.com/cliffordwolf/yosys into counter-extraction 2017-08-30 16:40:41 -07:00
Andrew Zonenberg 634f18be96 extract_counter: Minor changes requested to comply with upstream policy, fixed a few typos 2017-08-30 16:28:25 -07:00
Jason Lowdermilk 71d43cfc08 Merge remote-tracking branch 'upstream/master' 2017-08-30 11:47:06 -06:00
Jason Lowdermilk 271e8ba7cd fix indent level 2017-08-30 11:46:41 -06:00
Clifford Wolf c0034f51e6 Merge pull request #397 from azonenberg/gpak-libfixes 
Reformatted GP_COUNTx_ADV resets to avoid Yosys thinking that they're…
 2017-08-30 11:53:44 +02:00
Clifford Wolf 8530333439 Add {get,set}_src_attribute() methods on RTLIL::AttrObject 2017-08-30 11:39:11 +02:00
Jason Lowdermilk 32c0f1193e Add support for source line tracking through synthesis phase 2017-08-29 14:46:35 -06:00
Andrew Zonenberg 3fc1b9f3fd Finished refactoring counter extraction to be nice and generic. Implemented techmapping from $__COUNT_ to GP_COUNTx cells. 2017-08-28 22:18:57 -07:00
Andrew Zonenberg 46b01f05bb Refactored extract_counter to be generic vs GreenPAK specific 2017-08-28 22:18:47 -07:00
Andrew Zonenberg b5c15636c5 Refactoring: Renamed greenpak4_counters pass to extract_counter, moved it to techmap/ since it's going to become a generic pass 2017-08-28 22:18:34 -07:00
Andrew Zonenberg c3145863e7 Reformatted GP_COUNTx_ADV resets to avoid Yosys thinking that they're multi-edge-sensitive and getting confused. 2017-08-28 14:25:46 -07:00
Clifford Wolf 393b18e8e1 Merge branch 'azonenberg-recover-reduce' 2017-08-28 19:52:51 +02:00
Clifford Wolf 908f34aafc Rename recover_reduce to extract_reduce, fix args handling 2017-08-28 19:52:06 +02:00
Clifford Wolf 3aad3ed3da Merge branch 'recover-reduce' of https://github.com/azonenberg/yosys into azonenberg-recover-reduce 2017-08-28 19:46:17 +02:00