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Daniel Baluta 0488ffee32 zephyr: Fix DRC module compilation 
Add DRC files to Zephyr compilation to avoid failures like this:

sof/src/audio/drc/drc_generic.c:188: undefined reference to
`drc_lin2db_fixed'

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
 		2022-09-06 21:40:06 +01:00
..
include header: rtos: use rtos specific version of wait.h 2022-09-06 15:37:21 +01:00
CMakeLists.txt zephyr: Fix DRC module compilation 2022-09-06 21:40:06 +01:00
Kconfig header: rtos: decouple headers into rtos specific directories. 2022-08-31 12:01:07 +01:00
README zephyr: replace obsolete README section with link to sof-docs 2022-02-07 10:43:28 +00:00
docker-build.sh docker-build.sh: don't switch versions when already initialized 2022-08-04 09:46:22 +01:00
docker-run.sh zephyr/docker-run.sh: add comments about image versions 2022-09-02 18:28:30 +01:00
edf_schedule.c header: rtos: use rtos specific version of wait.h 2022-09-06 15:37:21 +01:00
module.yml zephyr: module: point to where the app is 2022-07-18 14:22:01 +01:00
schedule.c zephyr: schedule: enable multi-core scheduling 2021-05-05 11:03:35 +01:00
wrapper.c header: rtos: use rtos specific version of wait.h 2022-09-06 15:37:21 +01:00

README 

SOF with Zephyr RTOS
====================

SOF currently uses the Cadence Xtos/HAL and it's own kernel functions as
its RTOS. SOF is moving to use Zephyr as it's RTOS in parallel to current
releases using xtos.

The initial "alpha" of SOF on Zephyr will use the Zephyr RTOS for boot, IRQs,
scheduling and memory allocation. Subsequent release will use more Zephyr
functionality as code is moved from SOF to Zephyr (i.e. EDF scheduler updates
copied from SOF to Zephyr).

Building SOF on Zephyr
======================

Section promoted to
https://thesofproject.github.io/latest/getting_started/build-guide/build-with-zephyr.html

Testing on Qemu
===============

Get the SOF qemu sof-v4.2 branch here.

git@github.com:thesofproject/qemu.git

Configure as

./configure' '--prefix=.' '--target-list=xtensa-softmmu,x86_64-softmmu' \
             '--enable-gtk' '--enable-sdl' '--enable-spice' \
             '--audio-drv-list=alsa' '--enable-libusb' \
             '--enable-usb-redir' '--enable-coroutine-pool' \
             '--disable-opengl' '--enable-fdt'

 Then run make.

FW can be tested as follows using the qemu helper script.

 ./xtensa-host.sh apl \
     -r ../../sof/sof/build_apl_gcc/src/arch/xtensa/rom-apl.bin \
     -k ../../zephyrproject/zephyr/build/zephyr/zephyr.ri

Where -r and -k are used to specify the ROM and kernel files.

The ROMS can be built from the SOF repo by running

./scripts/xtensa-build-all.sh  -r -a

Using console
-------------

Using logging and simulator backend with processing printk (LOG_PRINTK)
can bring console in qemu.

 - Enable xtensa simulator logging backend (LOG_BACKEND_XTENSA_SIM).
 - Enable printk processing(LOG_PRINTK)
 - Add "-semihosting" to qemu command line. Make sure it goes through scripts to real qemu.