[U-Boot] imx7d: CPU core issue in secure mode

[Philippe Schenker]

+ Stefan Agner

On Thu, 2019-07-04 at 10:13 +0200, Tobias Junghans wrote:
> Hi,
> 
> I'm trying to get an imx7d-based Colibris board running in secure mode in 
> order to be able to use the CAAM, especially the HWRNG. However it seems like 
> it's currently not possible to boot a mainline kernel (4.19) in secure mode 
> with both CPU cores powered up, likely due to the missing PSCI firmware in 
> secure mode. When booting in nonsecure mode the kernel recognizes both CPU 
> cores while CAAM isn't working. Basically it's the same issue as discussed at
> 
> https://www.spinics.net/lists/u-boot-v2/msg33873.html
> 
> I'm using the latest mainline U-Boot (2019.07-rc4) with 
> CONFIG_ARMV7_BOOT_SEC_DEFAULT=y. Is there anything I can do about this issue?
> 
> Thank you and best regards
> 
> Tobias
> 
> 
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