sof/zephyr at e40cf6d7d15732d835b63c9ca8c237c175971420 - sof

History

Laurentiu Mihalcea cb72ee08a5 sof: lib: Remove unused #include from cpu.h All arch/ files should be only used by XTOS. Since the include statement from cpu.h is not used at all we can safely remove it. With this, we can make the split between Zephyr and XTOS more clean. Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>		2023-02-24 14:28:49 +02:00
..
include	sof: lib: Remove unused #include from cpu.h	2023-02-24 14:28:49 +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	zephyr: lib: move cpu.c from lib-zephyr	2023-02-23 22:17:07 +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	Switch to using rtos/task.h instead of sof/schedule/task.h	2023-02-24 14:28:49 +02:00
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	Switch to using rtos/idc.h instead of sof/drivers/idc.h	2023-02-24 14:28:49 +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.