mirror of https://github.com/thesofproject/sof.git
57 lines
1.7 KiB
Plaintext
57 lines
1.7 KiB
Plaintext
SOF with Zephyr RTOS
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====================
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SOF currently uses the Cadence Xtos/HAL and it's own kernel functions as
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its RTOS. SOF is moving to use Zephyr as it's RTOS in parallel to current
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releases using xtos.
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The initial "alpha" of SOF on Zephyr will use the Zephyr RTOS for boot, IRQs,
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scheduling and memory allocation. Subsequent release will use more Zephyr
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functionality as code is moved from SOF to Zephyr (i.e. EDF scheduler updates
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copied from SOF to Zephyr).
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Building SOF on Zephyr
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======================
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Section promoted to
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https://thesofproject.github.io/latest/getting_started/build-guide/build-with-zephyr.html
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Testing on Qemu
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===============
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Get the SOF qemu sof-v4.2 branch here.
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git@github.com:thesofproject/qemu.git
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Configure as
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./configure' '--prefix=.' '--target-list=xtensa-softmmu,x86_64-softmmu' \
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'--enable-gtk' '--enable-sdl' '--enable-spice' \
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'--audio-drv-list=alsa' '--enable-libusb' \
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'--enable-usb-redir' '--enable-coroutine-pool' \
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'--disable-opengl' '--enable-fdt'
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Then run make.
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FW can be tested as follows using the qemu helper script.
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./xtensa-host.sh apl \
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-r ../../sof/sof/build_apl_gcc/src/arch/xtensa/rom-apl.bin \
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-k ../../zephyrproject/zephyr/build/zephyr/zephyr.ri
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Where -r and -k are used to specify the ROM and kernel files.
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The ROMS can be built from the SOF repo by running
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./scripts/xtensa-build-all.sh -r -a
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Using console
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-------------
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Using logging and simulator backend with processing printk (LOG_PRINTK)
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can bring console in qemu.
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- Enable xtensa simulator logging backend (LOG_BACKEND_XTENSA_SIM).
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- Enable printk processing(LOG_PRINTK)
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- Add "-semihosting" to qemu command line. Make sure it goes through scripts to real qemu.
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