sof/zephyr at 2d27374086acaac3636b520fbcd66591739f46c9 - sof

History

Fabiola Kwasowiec 90fef5afd2 src_lite: add module Addition of SRC Lite module, which only supports a subset of conversions supported by the SRC module. Purpose of SRC Lite module is memory optimization. Code of SRC Lite is drastically reduced and requires significantly less memory. When needed one of defined conversions, driver can choose SRC Lite module instead of SRC module to optimize memory utilization. 48 -> 16kHz 44.1 -> 16 kHz 32 -> 16 kHz 44.1 -> 48 Signed-off-by: Fabiola Kwasowiec <fabiola.kwasowiec@intel.com>		2023-10-26 17:08:29 +03:00
..
include	idc: Add phase definition to IDC_MSG_PPL_STATE extension	2023-08-29 18:29:05 +03:00
lib	west.yml: update zephyr to 3.5.0-rc1	2023-10-03 09:55:47 +03:00
scripts	xtensa-build-zephyr.py: add new rimage_west_configuration()	2023-05-26 10:47:51 +03:00
CMakeLists.txt	src_lite: add module	2023-10-26 17:08:29 +03:00
FindZephyr-sdk.cmake	.github: de-hardcode zephyr SDK version in sparse build	2022-10-10 11:29:05 +01:00
Kconfig	ipc4: Add cross-core binding support	2023-10-25 10:57:53 +03:00
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	workflows: Zephyr build-linux upgraded Docker container with Zephyr SDK	2023-05-20 01:45:42 +03:00
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	zephyr: s/MP_NUM_CPUS/MP_MAX_NUM_CPUS/	2023-07-25 15:27:05 +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.