sof/zephyr at e28c429bc6356705369f11ca4890d88fc5b2df7d - sof

History

Ranjani Sridharan 9d9ba739b3 eq_iir: Use the new module interface Use the module interface instead of the comp drv interface for the EQ IIR component. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>		2022-07-18 16:56:40 +01:00
..
include/sof	zephyr: use zephyr prefix for includes	2022-07-18 14:22:01 +01:00
CMakeLists.txt	Audio: copier: add hifi version implementation of apply_attenuation	2022-07-15 08:55:11 +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	zephyr/docker-build.sh: make failure to symlink the SDK not fatal	2022-05-08 10:01:57 +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	eq_iir: Use the new module interface	2022-07-18 16:56:40 +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.