how to run u-boot on qemu arm64 virt machine?

[Chan Kim]

I think my question has error.

Is it possible to run it on SCP? I mean loading from SD card the kernel, file system, dtb etc to the memory and calling kernel.

==>

Is it possible to run it on SCP? I mean loading from SD card the kernel, file system, dtb etc to the memory and waking the main processor to start from kernel.

Thank you.

Chan Kim

 

From: Chan Kim <ckim at etri.re.kr> 
Sent: Thursday, October 14, 2021 12:03 PM
To: 'François Ozog' <francois.ozog at linaro.org>
Cc: 'Tom Rini' <trini at konsulko.com>; 'u-boot at lists.denx.de' <u-boot at lists.denx.de>
Subject: RE: how to run u-boot on qemu arm64 virt machine?

 

 

Hi Francois,

Thanks for the good information. I’ll look into that later.

Can I ask you a basic question?

When there are SCP, MCP and the main processor, in what processor does u-boot program run? I understand it runs on the main processor.

Is it possible to run it on SCP? I mean loading from SD card the kernel, file system, dtb etc to the memory and calling kernel.

Thank you!

Chan Kim

 

From: François Ozog <francois.ozog at linaro.org <mailto:francois.ozog at linaro.org> > 
Sent: Wednesday, October 13, 2021 6:29 PM
To: Chan Kim <ckim at etri.re.kr <mailto:ckim at etri.re.kr> >
Cc: Tom Rini <trini at konsulko.com <mailto:trini at konsulko.com> >; u-boot at lists.denx.de <mailto:u-boot at lists.denx.de> 
Subject: Re: how to run u-boot on qemu arm64 virt machine?

 

Hi

 

You can find work in progress here too:

http://releases.linaro.org/components/ledge/rp-0.2/ledge-multi-armv8/

 

For aarch64 there are virt and sbsa-ref machines. Virt is essentially to boot a VM while sbsa-ref is a reference platform that mimics all required hardware, firmware for the secure world (TF-A, OP-TEE) and firmware for normal world (U-Boot, EDK2). This technology (sbsa-ref) is really to simulate a system for pre-silicon development while virt shall be used in cloud native environments.

 

We are working on something that we may end up calling bsa-ref (note the absence of initial S standing for “server”). Sbsa-ref is about edk2 and acpi, bsa-ref is about U-Boot and device tree. The directory points to this work in progress. You can have a look at SystemReady in Arm to understand and get details on bsa.

 

In a future release of Qemu, one will be able to simulate a full platform with its main processor (as of today) but also SCP (system control processor) and MCP (management control processor).

 

Cheers

 

FF

 

Le mer. 13 oct. 2021 à 07:03, Chan Kim <ckim at etri.re.kr <mailto:ckim at etri.re.kr> > a écrit :

> 
> That's a very old QEMU version.  We use v6.1.0 currently and v4.2.0 before
> that.
> 
> --
> Tom

Thank you, Tom

Yes, so I tried it now with v4.2.0 with "-nographic" option. (Without it I
still see qemu manager window.)

Chan Kim




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