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Re: [PATCH v2 1/1] hw/arm/aspeed: Add fby35 machine type


From: Cédric Le Goater
Subject: Re: [PATCH v2 1/1] hw/arm/aspeed: Add fby35 machine type
Date: Fri, 6 May 2022 08:36:49 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0


Have you considered extending the emulation to include a AST1030 SoC
in a larger machine ?

The AST1030 SoC is merged and I think that QEMU could run a cortex-m4
CPU and a A7 CPU. A + R CPUs is supported (Xilinx boards).


As a matter of fact yes! I tested booting our OpenBIC Zephyr kernel last week 
with the 1030, that worked. I also used the experimental i2c multi-master 
patches from Klaus to make a i2c-netdev device that connects two separate QEMU 
instances through a socket and sends their i2c messages back and forth. I was 
able to test a basic MCTP transaction.

I’m hoping to help however possible with merging Klaus’s changes, and then 
propose the i2c-netdev thing too.

Oh wait a minute: You mean I could include both SoC’s in one machine?

Yes. We would need to extend the Aspeed machines to instantiate
2 different SoCs (or more). This is something quite interesting
to design.

Oh that’s a good idea actually. Maybe I’ll look into that as an alternative to 
the socket thing. Still, it might be something useful to submit anyways.

Yes. Please do.

Thanks,

C.




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