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Karol Trzcinski 095e3ac8ae ipc: Remove probe_support from mailbox 
This information is already provided by extended manifest,
so there is no need to double it in runtime code.
It allows to save 28 bytes from .DATA and  128 bytes from .TEXT
for cnl platform.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@linux.intel.com>
 		2020-10-12 11:41:11 +01:00
..
include/sof zephyr: wrapper: complete zephyr support for working audio 2020-08-14 15:07:34 +01:00
CMakeLists.txt ipc: Remove probe_support from mailbox 2020-10-12 11:41:11 +01:00
README zephyr: Update README to add instruction for debug loggin on qmeu 2020-07-23 14:58:25 +01:00
edf_schedule.c uuid: use a pointer instead of casting it to an integer 2020-09-15 09:33:29 +01:00
module.yml zephyr: build: Add initial build support for SOF application. 2020-04-16 21:01:43 +01:00
schedule.c zephyr: wrapper: complete zephyr support for working audio 2020-08-14 15:07:34 +01:00
wrapper.c zephyr: remote the platform_timer_set() wrapper 2020-10-01 22:06:40 +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
======================

Zephyr support is still WiP and moving fast so it's best to use the latest
code. Some familiarity of SOF and Zephyr is also needed here.

SOF
---

repo: git@github.com:thesofproject/sof.git

branch: lrg/topic/zephyr-app on the SOF repo


Zephyr
------

repo: git@github.com:thesofproject/zephyr.git

branch: intel_adsp_soc_family

Building
========

SOF on Zephyr only using the UP^2 platform atm, but it should be possible to
add others platforms as the features are validated on UP^2.

Please checkout the SOF repo to zephyrproject/modules/audio/sof

Then from zephyr directory.

% source zephyr.sh

This will setup the Zephyr environment, code can then be built

% west build -p always  -b up_squared_adsp samples/basic/minimal
% west sign -t rimage -- -k ../../sof/sof/rimage/keys/otc_private_key.pem


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.