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Fixes #74
Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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ecp5: Adding support for LUT extension muxes up to LUT7
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Tidy up logging code, add log file support, make timing failures non-fatal errors
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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router1: Fix unrouted, undriven nets
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Fixes #147
Signed-off-by: David Shah <dave@ds0.me>
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ice40: Fix disconnection of PACKAGEPIN for PAD PLLs
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Signed-off-by: David Shah <dave@ds0.me>
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docs/constraints: Fix typo
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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ecp5: Use cell and pip timings from the Trellis database
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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README: further specify required Boost packages for Ubuntu
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UWhen installing Boost, you can either install libboost-all-dev, or install
just the required packages.
Previously, `libboost-dev` was the only required package listed.
This adds `libboost-filesystem-dev libboost-thread-dev libboost-program-options-dev
libboost-python-dev` to the list of required packages.
It addresses issue #128.
Signed-off-by: Sean Cross <sean@xobs.io>
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QUIET flag for cmake searches for boost python
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ice40/pll: Fix typo when testing for global port output net
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Add missing router1 ctx->yield() calls
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
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iCE40: Bug fixes and general improvement of global network support
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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During packing we replace them by standard SB_IO cells and create the
'fake' SB_GB that matches that IO site global buffer connection.
It's done in a separate pass because we need to make sure the nextpnr iob
have been dealt first so we have our final Bel location on the SB_IO.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Those are cells that are created mainly to handle the various sources a
global network can be driven from other than a user net.
When the flag is set, this means the global network usually driven by
this BEL is in fact driven by something else and so that SB_GB BEL and
matching global network can't be used.
This is also what gets used to set the extra bits during bitstream
generation.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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The icebox DB is a bit inconsistent in how global network connections
are represented. Here we make it appear consistent by creating ports
on the cells that can drive it.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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