Fiedka

Fiedka is a firmware editor app with back-ends running in WebAssembly.

Releases

Binaries are published on GitHub.

Development

The app is based on Electron.

You need to have a Node.js runtime and npm installed. For the back-end, you need Go version 1.21 at least. Find them in your respective OS distribution and install them through your package manager, e.g., yay -S go nodejs npm.

To install the dependencies, run npm install.

For DXE GUIDs, efiXplorer is used as a submodule. Do an initial checkout:

git submodule update --init --checkout

Managing Go dependencies

Due to targeting WebAssembly, we need to pass env vars to the go command.

Note: The go.mod file is in src/. Run Go commands in that directory.

To upgrade Fiano, one of Fiedka's core dependencies:

GOOS=js GOARCH=wasm go get github.com/linuxboot/fiano@v1.2.0

If you want to add a new dependency, run:

GOOS=js GOARCH=wasm go get github.com/foo-org/foobar-go@v1.2.3

Note: Running go get may leave inconsistencies in go.mod. Afterwards, always run:

go mod tidy

Running

npm start

Working with a local copy of Fiano

Clone Fiano side by side with Fiedka; i.e., have them like this:

fiano/
fiedka/

A: Using a Go workspace

Create this symlink: ln -s go.workspace go.work That will tell Go to use ../fiano instead of github.com/linuxboot/fiano.

Note: go.work is gitignored so that you cannot accidentally commit it.

B: Using a replace directive

Add this line to the bottom of src/go.mod:

replace github.com/linuxboot/fiano => ../../fiano

Be sure never to have this in a PR to Fiedka. Prefer the workspace method.

UEFI

Obtain Test Images

See retrage's nightly OVMF builds.

Download RELEASEX64_OVMF.fd and load it using the file picker.

WebAssembly

• Research on WebAssembly
• Understanding WebAssembly
• WASM Tutorial

WASM issues

• Most performant way to pass data JS/WASM context