Possible minor bug in ARM A startup code. Clearing res1 instead of I bit in SCTLR.

[Sebastian Huber]

On 29.06.23 15:44, Philip Kirkpatrick wrote:> While I was cleaning up 
the ZynqMP RPU port for a revised patch (should
> be ready in a few hours) I noticed a possible minor bug in 
> `bsps/arm/shared/start/start.S` affecting ARM A profile parts.  Someone 
> familiar with ARM A parts, please check this.  

Yes, this looks like a bug.

> Also for my own 
> knowledge, why is this done with 2 bic instructions instead of one?

You have a limited number of one bits for the intermediate value in the 
BIC instructions.

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