sof/zephyr at 8d166a432f68ccd9ee657a58f379ed4f0f22b888 - sof

History

Marc Herbert e6f72dee82 zephyr/docker-build.sh: upgrade CMake to 3.21 or above CMake 3.21 changed the order object files are passed the linker. This breaks build reproducibility. Signed-off-by: Marc Herbert <marc.herbert@intel.com>		2022-12-16 15:19:44 -08:00
..
include	platform: Add Zephyr native_posix-based emulation environment	2022-12-07 17:25:39 +00:00
lib	zephyr/wrapper: Handle OOM correctly in rzalloc()	2022-12-07 17:25:39 +00:00
CMakeLists.txt	platform: Add Zephyr native_posix-based emulation environment	2022-12-07 17:25:39 +00:00
FindZephyr-sdk.cmake	.github: de-hardcode zephyr SDK version in sparse build	2022-10-10 11:29:05 +01:00
Kconfig	Introduce Zephyr DMA domain as experimental feature	2022-11-02 12:34:34 +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: pass http[s]_proxy variables to the container	2022-12-16 15:19:44 -08:00
edf_schedule.c	zephyr: edf-schedule: (cosmetic) make two variables static	2022-10-03 12:23:39 +03:00
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	mixer: convert the mixer comp to use the module interface	2022-12-15 20:44:20 +02:00

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.