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| author | David Shah <davey1576@gmail.com> | 2018-07-11 11:15:29 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-07-11 11:15:29 +0200 |
| commit | 75fda0fa59b081d3de89fdcfcb1fa5461b683a24 (patch) | |
| tree | 3ece61fab536dde5d81f1e915daafdb404c5beca /README.md | |
| parent | a70f5ce109309119d5ab45ee53f7cd3549144871 (diff) | |
| download | nextpnr-75fda0fa59b081d3de89fdcfcb1fa5461b683a24.tar.gz nextpnr-75fda0fa59b081d3de89fdcfcb1fa5461b683a24.tar.bz2 nextpnr-75fda0fa59b081d3de89fdcfcb1fa5461b683a24.zip | |
Add ECP5 notes to README
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 13 |
1 files changed, 12 insertions, 1 deletions
@@ -5,6 +5,7 @@ Supported Architectures ----------------------- - iCE40 +- ECP5 Prequisites ----------- @@ -23,7 +24,10 @@ Prequisites - For building on macOS, brew utility is needed. - Install all needed packages `brew install cmake python boost boost-python3 qt5` - Do not forget to add qt5 in path as well `echo 'export PATH="/usr/local/opt/qt/bin:$PATH"' >> ~/.bash_profile` - + - For ECP5 support, you must download [Project Trellis](https://github.com/SymbiFlow/prjtrellis), then follow its instructions to + download the latest database and build _libtrellis_. + + Building -------- @@ -37,6 +41,7 @@ Building - Add `-DCMAKE_INSTALL_PREFIX=/your/install/prefix` to use a different install prefix to the default `/usr/local` - For MSVC build with vcpkg use `cmake . -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake` using your vcpkg location - For MSVC x64 build adding `-G"Visual Studio 14 2015 Win64"` is needed. + - For ECP5 support, you must also specify the path to Project Trellis using `-DTRELLIS_ROOT=/path/trellis` - Use Make to run the build itself - For all binary targets, just run `make` - For just the iCE40 CLI&GUI binary, run `make nextpnr-ice40` @@ -68,6 +73,12 @@ Running produce `blinky.json`. - To place-and-route the blinky using nextpnr, run `./nextpnr-ice40 --hx1k --json ice40/blinky.json --pcf ice40/blinky.pcf --asc blinky.asc` + - For an ECP5 blinky, first synthesise using `yosys blinky.ys` in `ecp5/synth`. + - Then run ECP5 place-and route using + `./nextpnr-ecp5 --json ecp5/synth/blinky.json --basecfg ecp5/synth/ulx3s_empty.config --bit ecp5/synth/ulx3s.bit` + - Note that `ulx3s_empty.config` contains fixed/unknown bits to be copied to the output bitstream + - You can also use `--textcfg out.config` to write a text file describing the bitstream for debugging + Notes ------- |