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Merge pull request #144 from antonblanchard/update-README

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Add some information about GHDL backend issues
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Anton Blanchard 2020-01-21 13:28:43 +11:00 committed by GitHub
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@ -26,8 +26,17 @@ make -j$(nproc)
cd ../../../
```
A prebuilt micropython image is also available in the micropython/ directory.
- Microwatt uses ghdl for simulation. Either install this from your
distro or build it. Next build microwatt:
distro or build it. Microwatt requires ghdl to be built with the LLVM
or gcc backend, which not all distros do (Fedora does, Debian/Ubuntu
appears not to). ghdl with the LLVM backend is likely easier to build.
If building ghdl from scratch is too much for you, the microwatt Makefile
supports using Docker or podman images. Read through the Makefile for details.
- Next build microwatt:
```
git clone https://github.com/antonblanchard/microwatt
@ -39,6 +48,12 @@ make
```
ln -s ../micropython/ports/powerpc/build/firmware.bin main_ram.bin
```
Or if you were using the pre-built image:
```
ln -s micropython/firmware.bin main_ram.bin
```
- Now run microwatt, sending debug output to /dev/null: