sof/zephyr at 78667c028d93c22edea87d5ae1cee2ea2137e1d3 - sof

History

Daniel Baluta b18f08d095 zephyr/cmake: Add support for linking with cadence libs We add support for linking with Cadence AAC/MP3 libs. Cadence lib MP3 support is enabled via CONFIG_CADENCE_CODEC_MP3_DEC config symbol. Path to library file needs to be set via CONFIG_CADENCE_CODEC_MP3_DEC_LIB Similar for AAC. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>		2022-03-10 09:57:11 +02:00
..
include/sof	zephyr/atomic.h: add a no-op cast: (long)atomic_read()	2021-11-19 11:16:50 +00:00
CMakeLists.txt	zephyr/cmake: Add support for linking with cadence libs	2022-03-10 09:57:11 +02:00
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.