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Krzysztof Frydryk 6b647412bf lib: Add mcps budget manager for cpu clock control 
Initial implementation of MCPS budget manager.
FW can request/free MCPS usage on enabling certain FW elements. Caution
should be taken when processing on different cores, as kcps_budget_data
is uncache only. The manager will change clock source to match requested
MCPS consumption. Budget manager may interfere with manually setting
clock values!

Signed-off-by: Krzysztof Frydryk <krzysztofx.frydryk@intel.com>
 		2023-01-09 15:12:13 +00:00
..
include memcpy_s: fix the name of the last parameter 2023-01-09 14:35:39 +00:00
lib alloc: fix argument for cache alias conversion 2022-12-19 17:21:53 +00:00
CMakeLists.txt lib: Add mcps budget manager for cpu clock control 2023-01-09 15:12:13 +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 zephyr: edf-schedule: (cosmetic) make two variables static 2022-10-03 12:23:39 +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 mixin: Convert the component to use the module interface 2023-01-06 16:58:47 +00:00

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.