sof/zephyr at 4bdefd7e0a0b2be940fcd2515defd4b504fee94d - sof

History

Marc Herbert 4bdefd7e0a zephyr/docker-build.sh: explain why we autodetect with FindZephyr-sdk Pure comment change, no code change. Kudos to Stephanos Ioannidis for patiently explaining this to me on Discord. Signed-off-by: Marc Herbert <marc.herbert@intel.com>		2024-02-19 14:20:07 +00:00
..
include	zephyr: interrupt.h: conditionally include drivers/interrupt.h	2024-01-29 14:53:26 +00:00
lib	lib: alloc: k_panic is not required in failure case	2024-02-14 14:56:39 +00:00
scripts	xtensa-build-zephyr.py: add new rimage_west_configuration()	2023-05-26 10:47:51 +03:00
test	vmh test: extend test for spanning	2023-12-08 15:29:06 +02:00
CMakeLists.txt	lib-manager: fork a copy for LLEXT support	2024-01-26 17:56:14 +02:00
FindZephyr-sdk.cmake	.github: de-hardcode zephyr SDK version in sparse build	2022-10-10 11:29:05 +01:00
Kconfig	test: add boot-time ztest-based testing	2023-12-08 15:29:06 +02:00
README	zephyr: replace obsolete README section with link to sof-docs	2022-02-07 10:43:28 +00:00
boot_test.c	test: add boot-time ztest-based testing	2023-12-08 15:29:06 +02:00
docker-build.sh	zephyr/docker-build.sh: explain why we autodetect with FindZephyr-sdk	2024-02-19 14:20:07 +00:00
docker-run.sh	workflows: Upgrade docker container to v0.26.6	2023-12-14 11:34:12 +02:00
edf_schedule.c	zephyr: edf-schedule: fix CONTAINER_OF type	2023-08-31 22:14:37 +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	cleanup: remove direct inclusion of drivers/interrupt.h	2024-01-29 14:53:26 +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.