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Author SHA1 Message Date
whitequark 33f21628bb vendor: give names to IO buffer instances. 
Fixes #123.
 2019-07-03 14:43:03 +00:00
Sebastien Bourdeauducq 9a1048af50 lattice_ecp5: fix get_input 2019-07-03 10:25:32 +08:00
Alain Péteut 20553b1478 build.plat: add iter_extra_files method. 
* vendor.*: employ iter_extra_files.
 2019-07-02 18:25:29 +00:00
Alain Péteut b67f5cfa65 vendor.xilinx_7series: read extra .xdc files. 2019-07-02 08:23:37 +00:00
whitequark 6454378fe7 vendor.lattice_ice40: fix instance of negedge FF due to a typo. 2019-06-28 07:05:20 +00:00
whitequark f60ceb349b vendor.xilinx_{spartan6,7series}: speedgrade→speed. 
For consistency with ECP5.
 2019-06-25 15:51:52 +00:00
whitequark 0a145ed2d9 vendor.lattice_ecp5: implement. 
Note that because of issues with Yosys and nextpnr, it is not yet
possible to use either SDR or DDR I/O.
 2019-06-25 15:48:07 +00:00
whitequark 23ed888857 vendor.lattice_ice40: use different --package for 4k devices. 2019-06-19 06:09:08 +00:00
Jean-François Nguyen b3c5ff7e95 vendor.xilinx_7series: fix IOB packing. 2019-06-17 20:48:46 +00:00
whitequark 3fc5f170e6 vendor.xilinx_{7series,spartan6}: emit IBUF/OBUF explicitly. 
Do this to make sure all buffers, tristate/differential or not, are
instantiated the exact same way, and are subject to the same set of
toolchain bugs, if any.
 2019-06-17 15:47:56 +00:00
whitequark 2a8e7bc6f2 vendor.xilinx_{7series,spartan6}: cleanup. NFC. 
Eliminate some intermediate signals if they are not necessary.
Do not even return i, o, or t if the pin does not have them.
 2019-06-17 15:47:56 +00:00
whitequark 8b34602d91 vendor.xilinx_{7series,spartan6}: connect FCDE and IOB directly. 
Before this commit, in some cases there will be an inverter, which is
not allowed on an FDCE with IOB attribute set to true, as it will
interfere with packing.
 2019-06-17 15:47:56 +00:00
whitequark 70bbfecf6d vendor.lattice_ice40: never place an inverter on global buffer output. 
This would make `pin.i` not a global network anymore, which is likely
undesirable if an explicit Attrs(GLOBAL=1) is specified.
 2019-06-14 20:44:02 +00:00
Jean-François Nguyen 01a3101fd3 vendor.xilinx_7series: implement inverters. 2019-06-13 15:14:09 +00:00
Jean-François Nguyen 412781e0c3 vendor.xilinx_spartan6: implement DDR I/O buffers and inverters. 2019-06-13 15:13:31 +00:00
whitequark 6beba3a48b Simplify code by using Signal.like(name_suffix="..") appropriately. 2019-06-12 22:28:45 +00:00
Jean-François Nguyen 3b303c3334 vendor.xilinx_7series: implement DDR I/O buffers. 2019-06-12 19:55:10 +00:00
whitequark d3ed390b9d vendor.lattice_ice40: fix typo. 2019-06-12 17:38:14 +00:00
whitequark efb2d773c3 build.{dsl,res,plat}: add PinsN and DiffPairsN. 2019-06-12 14:42:39 +00:00
Jean-François Nguyen d5ba26b174 vendor.xilinx_spartan6: implement. 2019-06-07 08:58:41 +00:00
Jean-François Nguyen 2b3a0e9fa0 vendor.xilinx_7series: fix typos. 2019-06-07 07:33:20 +00:00
Jean-François Nguyen f26e612899 vendor.xilinx_7series: implement. 2019-06-06 13:22:15 +00:00
whitequark c9879c795b build.{dsl,res,plat}: apply clock constraints to signals, not resources. 
This adds the Clock() build DSL element, and adds a resource manager
function add_clock_constraint() that takes a Pin or a Signal.
Note that not all platforms, in particular not any nextpnr platforms
at the moment, can add constraints on arbitrary signals.

Fixes #86.
 2019-06-05 08:52:30 +00:00
whitequark ab3f103e5a build.dsl: replace extras= with Attrs(). 
This change proved more tricky than expected due to downstream
dependencies, so it also includes some secondary refactoring.
 2019-06-05 07:02:08 +00:00
whitequark c52cd72d3e Typos and style fixes. NFC. 2019-06-05 02:48:41 +00:00
whitequark 452c4b380b vendor.lattice_ice40: normalize device names. 
Right now the device name in the board file is just the option
nextpnr uses, but that's overnormalized and doesn't quite match
the chip names used elsewhere. It is even worse for ECP5 in terms
of mismatch with chip names, and for ECP5 we need to support other
toolchains as well, so let's handle this uniformly everywhere.
 2019-06-04 16:09:08 +00:00
whitequark 1b54eb80da vendor.board: split off into nmigen-boards package. 
The iCE40 programmers are also moved, since they're board-specific.
(It looks like iceprog isn't, but it only works with Lattice
evaluation kits.)

Fixes #80.
 2019-06-04 09:52:33 +00:00
whitequark 316ba10207 build.run: simplify using build products locally, e.g. for programming. 2019-06-04 09:13:24 +00:00
whitequark 2763b403f1 build.res: simplify emission of port constraints on individual bits. 2019-06-04 08:39:03 +00:00
whitequark 9f643ce005 Clean up imports. 
This commit:
  * moves lists of universally useful imports from `nmigen` to
    `nmigen.hdl` and `nmigen.lib`, reimporting them in `nmigen`;
  * replaces lots of imports from individual parts of `nmigen.hdl`
    with a star import from `nmigen.hdl`;
  * replaces imports in tests with what we expect downstream code
    to use;
  * adds some missing imports in `nmigen.formal`.
 2019-06-04 08:18:50 +00:00
whitequark c89c2ce941 vendor.board.tinyfpga_bx: clk16 pin does not have a global buffer. 
Fixes #82.
 2019-06-04 06:43:10 +00:00
whitequark 45d1dc1d54 vendor.board.tinyfpga_bx: fix typo. 2019-06-04 06:20:01 +00:00
whitequark 6426b90e4a vendor.conn.pmod: implement. 
Fixes #79.
 2019-06-03 16:49:59 +00:00
whitequark 0fa45b5e14 vendor.board: extract package. 2019-06-03 16:14:59 +00:00
whitequark 2ca0834d41 vendor.tinyfpga_bx: add connectors. 2019-06-03 15:40:57 +00:00
whitequark 7c5461d210 vendor.icestick: add connectors. 2019-06-03 15:15:45 +00:00
whitequark f351e2bd1e vendor.ice40_hx1k_blink_evn: add (some) connectors. 
I have no idea how to lay out the Arduino-like connectors best,
so they're just missing.
 2019-06-03 15:03:49 +00:00
whitequark ed64880cc4 build.{plat,res}: add support for connectors. 
Fixes #77.
 2019-06-03 15:02:15 +00:00
whitequark 639e64c388 vendor.fpga.lattice_ice40: implement differential output buffers. 2019-06-03 09:28:27 +00:00
whitequark 41adcc3f97 vendor.fpga.lattice_ice40: implement differential input buffers. 2019-06-03 08:38:12 +00:00
whitequark 3116d4add2 vendor.fpga.lattice_ice40: allow instantiating SB_GB_IO via extras. 2019-06-03 07:54:28 +00:00
whitequark 185abb492d vendor.fpga.lattice_ice40: implement SDR and DDR I/O buffers. 2019-06-03 07:43:31 +00:00
whitequark 6fae06aea9 build.{dsl,plat,res}: allow dir="oe". 
Although a dir="oe" pin is generally equivalent to dir="io" pin with
the i* signal(s) disconnected, they are not equivalent, because some
pins may not be able to support input buffers at all, either because
there are no input buffers, or because the input buffers are consumed
by some other resource.

E.g. this can happen on iCE40 when the input buffer is consumed by
a PLL.
 2019-06-03 04:42:55 +00:00
whitequark 9ba2efd86b build.{res,plat}: use xdr=0 as default, not xdr=1. 
The previous behavior was semantically incorrect.
 2019-06-03 03:36:32 +00:00
whitequark 3327deae92 vendor.fpga.lattice_ice40: enable SystemVerilog when reading .sv files. 2019-06-03 03:01:56 +00:00
whitequark dc17d06fe9 vendor.fpga.lattice_ice40: instantiate SB_IO and apply extras. 
The PULLUP and PULLUP_RESISTOR extras are representable in the PCF
file. The IO_STANDARD extra, however, can only be an SB_IO parameter.
 2019-06-03 02:51:59 +00:00
whitequark 98497b2075 build.dsl: require a dict for extras instead of a stringly array. 
Fixes #72.
 2019-06-02 23:36:21 +00:00
whitequark e4ebe03115 vendor.fpga.lattice_ice40: use .bin suffix for bitstream tempfiles. 2019-06-02 04:12:50 +00:00
whitequark 37152c733e vendor.tinyfpga_{b→bx} 2019-06-02 04:11:28 +00:00
whitequark bff08c5016 vendor.tinyfpga_b: fix IO_STANDARD. 2019-06-02 04:04:07 +00:00
Simon Kirkby 358b98e5de vendor.tinyfpga_b: implement. 2019-06-02 01:20:09 +00:00
whitequark 39fad9a955 vendor.icestick: fix typo. 2019-06-02 01:13:03 +00:00
whitequark ba0fcddb2c vendor.ice40_hx1k_blink_evn: implement. 2019-06-01 16:48:07 +00:00
whitequark eab372383a vendor.icestick: implement. 2019-06-01 16:47:20 +00:00
whitequark 321d245e95 vendor.fpga.lattice_ice40: implement. 2019-06-01 16:47:01 +00:00