sof/zephyr at 8caa0e27a464b468294ced40a33d527c3caf4118 - sof

History

Andrula Song abd81a1383 Audio: Dcblock: Add HiFi3 implementation of dcblock Add HiFi3 implementation of dcblock processing functions. Compared with generic C version, the 16 bit format can save about 48.1% cycles, and 48.4% for 24 bit format and 52.6% for 32 bit. Signed-off-by: Andrula Song <andrula.song@intel.com>		2023-03-21 22:17:01 +00:00
..
include	clock: replace per-clock locks with a global one	2023-03-07 13:37:56 +02:00
lib	Switch to using rtos/idc.h instead of sof/drivers/idc.h	2023-02-24 14:28:49 +02:00
scripts	.github/zephyr: compare Windows and Linux builds	2023-01-23 19:28:51 +02:00
CMakeLists.txt	Audio: Dcblock: Add HiFi3 implementation of dcblock	2023-03-21 22:17:01 +00:00
FindZephyr-sdk.cmake	.github: de-hardcode zephyr SDK version in sparse build	2022-10-10 11:29:05 +01:00
Kconfig	kconfig: add DP_SCHEDULER kconfig def	2023-03-14 14:00:28 +00:00
README	zephyr: replace obsolete README section with link to sof-docs	2022-02-07 10:43:28 +00:00
docker-build.sh	zephyr/docker-build.sh: upgrade CMake to 3.21 or above	2022-12-16 15:19:44 -08:00
docker-run.sh	zephyr/docker-run.sh: hardcode zephyr-build img to Zephyr SDK 0.15.2	2023-03-13 21:59:42 +00:00
edf_schedule.c	schedule: remove schedule_task_complete()	2023-03-06 12:14:14 +00:00
lib.c	zephyr: Add zephyr lib.c standalone file	2022-11-11 15:57:50 +02:00
module.yml	zephyr: module: point to where the app is	2022-07-18 14:22:01 +01:00
schedule.c	header: rtos: use rtos specific version of alloc.h	2022-09-12 11:44:27 +01:00
wrapper.c	ams: Add initial AMS implementation	2023-02-28 09:10:29 +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.