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* ice40: Promote one clock to a global bufferDavid Shah2018-06-131-0/+48
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Fixing implementation of constantsDavid Shah2018-06-131-6/+40
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Simple IO buffer insertion, enable packer by defaultDavid Shah2018-06-131-29/+25
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Remove IO buffers when fed by SB_IODavid Shah2018-06-131-0/+59
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Improve packer diagnosticsDavid Shah2018-06-121-1/+4
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ice40: Add support for LC placement constraints in packerDavid Shah2018-06-121-9/+25
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Add IdString APIClifford Wolf2018-06-121-2/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix NEXTPNR_NAMESPACEClifford Wolf2018-06-121-0/+4
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* ice40: Adding a placement validity checkerDavid Shah2018-06-121-6/+6
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ice40: Pack constants to LCsDavid Shah2018-06-121-0/+25
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ice40: Debugging the packerDavid Shah2018-06-121-0/+18
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* ice40: Start working on a packer, currently not testedDavid Shah2018-06-121-0/+79
Signed-off-by: David Shah <davey1576@gmail.com>