The GNUmakefile in this directory prepares /lib/firmware/intel/sof/ and /lib/firmware/intel/sof-tplg/ directories.

It extracts what's needed from the output of the scripts ./scripts/xtensa-build-all.sh and ./scripts/build-tools.sh -T -l. It automatically runs these scripts when needed for the platforms listed in config.mk and performs incremental builds when they have already been run.

It does not copy anything to /lib/firmware/ directly but to local, "staging" subdirectory first. The staging area can then be installed with rsync to a local or remote /lib/firmware/intel/ or to a release location. This gives an opportunity to inspect the staging area and avoids running everything as root.

The default target (re-)generates the staging area:

make -C installer/

Then, to install the staging area:

sudo make -C installer/ rsync

By default, the "rsync" target installs to the local /lib/firmware/intel/ directory. To install to a different host or different directory, copy the sample-config.mk file to config.mk and follow the instructions inside the file. config.mk can also be used to change the list of platforms installed and a number of other Make variables. As usual with Make, many parameters can also be overridden on the command line.

To stage and install in one go:

make -C installer/ stage rsync

"stage" is the default target and it tries to stage everything: firmware, dictionaries and topologies. As usual with Make, it's possible to invoke individual targets. Find a list of targets at the top of GNUMakefile.

You can use make -jN stage to build multiple platforms faster but do not make -jN stage rsync as this will start deploying before the builds are all complete. That's because we want the rsync target to be able to deploy subsets. Instead do: make -jN somethings && make rsync.

Sample output:

staging/sof: symbolic link to sof-v1.6.1
staging/sof-v1.6.1/
├── community/
│   ├── sof-tgl.ri
│   ├── sof-cnl.ri
│   ├── sof-icl.ri
│   ├── sof-jsl.ri
│   ├── sof-apl.ri
│   ├── sof-cfl.ri -> sof-cnl.ri
│   ├── sof-cml.ri -> sof-cnl.ri
│   ├── sof-ehl.ri -> sof-tgl.ri
│   └── sof-glk.ri -> sof-apl.ri
├── intel-signed/
├── sof-bdw.ri
├── sof-cht.ri
├── sof-byt.ri
├── sof-cnl.ldc
├── sof-tgl.ldc
├── sof-icl.ldc
├── sof-jsl.ldc
├── sof-apl.ldc
├── sof-bdw.ldc
├── sof-byt.ldc
├── sof-cht.ldc
├── sof-apl.ri -> intel-signed/sof-apl.ri
├── sof-cfl.ri -> intel-signed/sof-cfl.ri
├── sof-cml.ri -> intel-signed/sof-cml.ri
├── sof-cnl.ri -> intel-signed/sof-cnl.ri
├── sof-ehl.ri -> intel-signed/sof-ehl.ri
├── sof-glk.ri -> intel-signed/sof-glk.ri
├── sof-icl.ri -> intel-signed/sof-icl.ri
├── sof-jsl.ri -> intel-signed/sof-jsl.ri
├── sof-tgl.ri -> intel-signed/sof-tgl.ri
├── sof-cfl.ldc -> sof-cnl.ldc
├── sof-cml.ldc -> sof-cnl.ldc
├── sof-ehl.ldc -> sof-tgl.ldc
└── sof-glk.ldc -> sof-apl.ldc