sof/zephyr at 2a9473a17be4764b55b7392a6104561f6f2f4da8 - sof

History

Daniel Baluta 7ca9a2eb8a driver: imx: Add PDM MICFIL driver The Pulse Density Modulated Microphone Interface (MICFIL) is a popular way to deliver audio from microphones to the processor in several applications, such as mobile telephones. However, current digital-audio systems use multibit audio signal (also known as multibit PCM) to represent the signal. This block implements the required digital interface to provide a 24-bits audio signal from a PDM microphone bitstream in a configurable output sampling rate. This patch adds initial support for PDM MICFIL IP found on i.MX8MP board. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>		2023-09-20 14:43:11 +03:00
..
include	idc: Add phase definition to IDC_MSG_PPL_STATE extension	2023-08-29 18:29:05 +03:00
lib	zephyr: lib: regions_mm: add missing init.h	2023-09-06 14:09:36 +03:00
scripts	xtensa-build-zephyr.py: add new rimage_west_configuration()	2023-05-26 10:47:51 +03:00
CMakeLists.txt	driver: imx: Add PDM MICFIL driver	2023-09-20 14:43:11 +03:00
FindZephyr-sdk.cmake	.github: de-hardcode zephyr SDK version in sparse build	2022-10-10 11:29:05 +01:00
Kconfig	zephyr_dma_domain: Give semaphore resources based on sched_comp's state upon cancel	2023-05-16 14:01:23 +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.