sof/zephyr at 52979f35ccd311033e1e9aee8cff3dece7fd3767 - sof

History

Andrula Song 100144a1d0 Audio: Mixer: Add hifi version processing functions for mixer Add hifi3 & hifi4 version implementation of mixer processing functions. The hifi version functions can save at least 47% cycles than C version. Signed-off-by: Andrula Song <xiaoyuan.song@intel.com>		2022-08-24 12:00:30 +01:00
..
include/sof	zephyr: update for recent Zephyr include path changes	2022-08-03 20:59:53 +01:00
CMakeLists.txt	Audio: Mixer: Add hifi version processing functions for mixer	2022-08-24 12:00:30 +01:00
Kconfig	dma: add Zephyr native DMA support to host & dai	2022-05-31 15:28:27 +01:00
README	zephyr: replace obsolete README section with link to sof-docs	2022-02-07 10:43:28 +00:00
docker-build.sh	docker-build.sh: don't switch versions when already initialized	2022-08-04 09:46:22 +01:00
edf_schedule.c	zephyr: use zephyr prefix for includes	2022-07-18 14:22:01 +01:00
module.yml	zephyr: module: point to where the app is	2022-07-18 14:22:01 +01:00
schedule.c	zephyr: schedule: enable multi-core scheduling	2021-05-05 11:03:35 +01:00
wrapper.c	timer: Introduce sof_cycle_get_64	2022-08-01 11:09:39 +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.