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Seppo Ingalsuo c1e5a21156 Math: Restore fast look-up table based sine function 
This patch adds function sofm_lut_sin_fixed_16b(). It was
used earlier in SOF with name sin_fixed() but was remove
at add of Cordic trigonometric library. This sine function
can be used in hot code parts. Due to look-up table usage it
consumes more .bss RAM than cordic version.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
 		2024-01-11 15:33:52 +00:00
..
include module: export symbols for loadable modules 2024-01-09 19:01:13 +02:00
lib module: export symbols for loadable modules 2024-01-09 19:01:13 +02:00
scripts xtensa-build-zephyr.py: add new rimage_west_configuration() 2023-05-26 10:47:51 +03:00
test vmh test: extend test for spanning 2023-12-08 15:29:06 +02:00
CMakeLists.txt Math: Restore fast look-up table based sine function 2024-01-11 15:33:52 +00:00
FindZephyr-sdk.cmake .github: de-hardcode zephyr SDK version in sparse build 2022-10-10 11:29:05 +01:00
Kconfig test: add boot-time ztest-based testing 2023-12-08 15:29:06 +02:00
README zephyr: replace obsolete README section with link to sof-docs 2022-02-07 10:43:28 +00:00
boot_test.c test: add boot-time ztest-based testing 2023-12-08 15:29:06 +02:00
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: Upgrade docker container to v0.26.6 2023-12-14 11:34:12 +02:00
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.