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* ice40: Don't constrain to a PLL bel that has already been usedDavid Shah2019-04-011-0/+2
| | | | | | Fixes #258 Signed-off-by: David Shah <dave@ds0.me>
* ice40: Add support for SB_I2C and SB_SPISylvain Munaut2019-03-255-1/+112
| | | | Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
* Add --placer option and refactor placer selectionDavid Shah2019-03-243-6/+16
| | | | Signed-off-by: David Shah <dave@ds0.me>
* HeAP: Add PlacerHeapCfgDavid Shah2019-03-221-1/+3
| | | | Signed-off-by: David Shah <dave@ds0.me>
* HeAP: Make HeAP placer optionalDavid Shah2019-03-222-5/+11
| | | | | | | | | | | | | A CMake option 'BUILD_HEAP' (default on) configures building of the HeAP placer and the associated Eigen3 dependency. Default for the iCE40 is SA placer, with --heap-placer to use HeAP Default for the ECP5 is HeAP placer, as SA placer can take 1hr+ for large ECP5 designs and HeAP tends to give better QoR. --sa-placer can be used to use SA instead, and auto-fallback to SA if HeAP not built. Signed-off-by: David Shah <dave@ds0.me>
* HeAP: Add TAUCS wrapper and integrationDavid Shah2019-03-221-2/+4
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Add examples folder including floorplan exampleDavid Shah2019-03-2211-0/+42
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Add Python helper functions for floorplanningDavid Shah2019-03-221-0/+7
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Fix u4k in external chipdb mode.Marcin Kościelnicki2019-03-191-3/+3
| | | | Signed-off-by: Marcin Kościelnicki <marcin@symbioticeda.com>
* ice40: u4k merge fixDavid Shah2019-02-251-0/+2
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Merge pull request #239 from YosysHQ/dsp_casc_dummy_wiresDavid Shah2019-02-252-0/+24
|\ | | | | ice40: Add DSP SIGNEXTIN/OUT and ACCUMCI/O ports
| * ice40: Add DSP SIGNEXTIN/OUT and ACCUMCI/O portsDavid Shah2019-02-212-0/+24
| | | | | | | | Signed-off-by: David Shah <davey1576@gmail.com>
* | ice40: support u4kSimon Schubert2019-02-2313-13/+57
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* ice40: Fix timing class of 'padin' GB outputsDavid Shah2019-02-201-1/+1
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Merge branch 'master' into mmaped_chipdbMiodrag Milanović2019-02-121-1/+8
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| * ice40: PLLs can't conflict with themselvesDavid Shah2019-02-091-0/+2
| | | | | | | | | | | | Fixes error building testcase from #145 Signed-off-by: David Shah <dave@ds0.me>
| * ice40: Don't create PLLOUT_B buffer for single-output PLL variantsDavid Shah2019-02-091-1/+6
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* | Fix according to comments on PRMiodrag Milanovic2019-02-101-1/+1
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* | Load chipdb from filesystem as optionMiodrag Milanovic2019-02-093-83/+114
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* Merge pull request #220 from YosysHQ/coi3Eddie Hung2019-01-291-6/+9
|\ | | | | ice40: Add budget override for CO->I3 path
| * [ice40] Refactor Arch::getBudgetOverride()Eddie Hung2019-01-291-29/+9
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| * ice40: Add budget override for CO->I3 pathDavid Shah2019-01-271-0/+23
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* | timing: Path related fixesDavid Shah2019-01-272-6/+33
|/ | | | Signed-off-by: David Shah <dave@ds0.me>
* Merge pull request #211 from smunaut/ice40_ram_attrsDavid Shah2019-01-211-0/+4
|\ | | | | ice40/pack: Copy attributes to packed cell
| * ice40/pack: Copy attributes to packed RAM cellsSylvain Munaut2019-01-191-0/+4
| | | | | | | | | | | | | | Useful to allow manual placement of SPRAM/EBR using BEL attribute for instance Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
* | ice40: Add error message if a selected site is not Global Buffer capableSylvain Munaut2019-01-181-0/+4
|/ | | | | | ... rather than assert()-out during the call to getWireBelPins() call Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
* ice40: Add timing data for all IO modesDavid Shah2019-01-072-3/+67
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Improve handling of unconstrained IODavid Shah2018-12-263-3/+23
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Add PCF support for -pullup, -pullup_resistor and -nowarnDavid Shah2018-12-202-4/+45
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ice40: Fix LOCK feedthrough insertion with carry or >8 LUTsDavid Shah2018-12-201-4/+10
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ci: Add attosoc smoketest for ice40David Shah2018-12-088-0/+3185
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Merge pull request #163 from daveshah1/timing_optDavid Shah2018-12-073-2/+17
|\ | | | | Adding criticality calculation and experimental timing optimisation pass
| * timing_opt: Reduce iterations to 30, tidy up loggingDavid Shah2018-12-061-2/+1
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
| * timing_opt: Improve heuristicsDavid Shah2018-12-061-1/+1
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
| * timing_opt: Make an optional pass controlled by command lineDavid Shah2018-12-062-3/+11
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
| * clangformatDavid Shah2018-12-061-3/+4
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
| * timing_opt: Debugging and integrationDavid Shah2018-12-061-1/+8
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* | ice40: Report error for unsupported PLL FEEDBACK_PATH valuesDavid Shah2018-12-061-7/+11
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* | ice40: Improve bitstream error handlingDavid Shah2018-12-061-2/+10
|/ | | | | | Fixes #161 and provides a clearer error for #170 Signed-off-by: David Shah <dave@ds0.me>
* clangformatDavid Shah2018-12-062-2/+3
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Put debug logging behind ctx->debugDavid Shah2018-12-061-3/+5
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Fix carry chain splittingDavid Shah2018-12-051-1/+1
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Don't split carry chain in simple feed-out casesDavid Shah2018-12-041-7/+50
| | | | Signed-off-by: David Shah <dave@ds0.me>
* ice40: Include I3 connectivity in chainDavid Shah2018-12-041-23/+25
| | | | | | Thanks @smunaut Signed-off-by: David Shah <dave@ds0.me>
* ice40: add reset global promotion threshold.whitequark2018-12-041-1/+3
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* ice40: Add support for placing SB_LEDDA_IP block.Daniel Serpell2018-12-015-1/+26
| | | | Signed-off-by: Daniel Serpell <daniel.serpell@gmail.com>
* ice40: Add a warning for unconstrained IODavid Shah2018-11-291-6/+5
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Improve reporting of unknown cell typesDavid Shah2018-11-291-1/+1
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Merge pull request #157 from whitequark/fanout-threshDavid Shah2018-11-291-1/+1
|\ | | | | ice40: raise CE global promotion threshold
| * ice40: raise CE global promotion threshold.whitequark2018-11-291-1/+1
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