[Sound-open-firmware] Hifi4 DSP

[Daniel Baluta]

Hi Laurent,

What platform are you using?

Have a lookt at gcc toolchai for SOF here:

https://github.com/thesofproject/crosstool-ng/releases

Pure xtensa assembly code should "just work" most of the time.

As for Qemu support last time I tested booting the dsp worked fine.

https://github.com/thesofproject/qemu

thanks,
Daniel.
________________________________
From: Sound-open-firmware <sound-open-firmware-bounces at alsa-project.org> on behalf of Laurent Ovaert <sid6582 at msn.com>
Sent: Wednesday, July 27, 2022 12:21 PM
To: sound-open-firmware at alsa-project.org <sound-open-firmware at alsa-project.org>
Subject: [Sound-open-firmware] Hifi4 DSP

Dear list,

I wonder how much is the Hifi4 DSP supported in sof for the GCC (not XCC) toolchain ?
I am a DSP engineer not part of an organization and i cannot get XCC from Cadence so i really count on GCC.

I read in the FAQs that GCC has no Hifi SIMD support. Does it mean just no intrinsics support and of course no chance for auto-vectorization ?

What about writing pure Hifi4 assembly code?
When building the lx7hifi4-gcc10.2-gdb9 toolchain, can the assembler actually assemble Hifi4 code without restriction ? What about qemu support for Hifi4 ?

I am surprised Cadence is not giving the compiler or at least the assrmbler for the Hifi4 :-/

Thanks,
Laurent
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