sof/zephyr
Rander Wang 0b537cba4d ipc4: init gain & mixin components for zephyr
Fix issue of ipc4 pipeline initialization with zephyr enabled.
Need to initialize these two components. Gain module is another
type of volume without peak volume support and mixin has subset
function of mixer.

Signed-off-by: Rander Wang <rander.wang@intel.com>
2022-03-01 22:50:17 +00:00
..
include/sof zephyr/atomic.h: add a no-op cast: (long)atomic_read() 2021-11-19 11:16:50 +00:00
CMakeLists.txt zephyr: add codec adapter components 2022-02-18 21:12:24 +00:00
Kconfig zephyr: enable cached heap by default for Intel cAVS platforms 2021-10-15 09:28:28 +01:00
README zephyr: replace obsolete README section with link to sof-docs 2022-02-07 10:43:28 +00:00
docker-build.sh .github: switch to new xtensa-build-zephyr.py 2022-02-24 14:54:50 +00:00
edf_schedule.c zephyr: (cosmetic) fix indentation 2021-09-07 13:34:31 +01:00
module.yml zephyr/module.yml: add URL, name: and comment out default values 2021-07-13 15:56:49 +01:00
schedule.c zephyr: schedule: enable multi-core scheduling 2021-05-05 11:03:35 +01:00
wrapper.c ipc4: init gain & mixin components for zephyr 2022-03-01 22:50:17 +00:00

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.