[U-Boot] [PATCH 19/19] imx: ventana: config: enable Falcon mode

[Stefano Babic <sbabic@denx.de>]

Hi Stefan,

On 21/05/2015 18:46, Stefan Roese wrote:

>> If you use an environment variable and the environment is put into the
>> NAND (with MMC you can change the card), there is nothing you can do
>> anymore. Board tries to boot until next panic, and then again and again.
> 
> Some boards just don't have such a means as a push button or jumper to
> select the Falcon mode. That's why I introduced this environment
> variable dependent way to select Falcon mode quite some time ago for a
> PPC based board.
> 
> You are correct. If something goes completely wrong, and the board tries
> to boot into the OS with a non-working OS installed, then you are
> doomed. JTAG comes in handy then as I have experienced myself. ;)

Right

> 
> But this is usually only while developing this feature and kernel. Once
> its tested and mature, this really works.

Yes, when the product is delivered to the customer, this does not
matter. But we should be aware of it, and know that something can go wrong.

> 
> Again, its a trade-off since another, better method to switch between
> U-Boot- and OS- booting is not available.

Exactly - anyway, patch is applied and I run build again on imx board.
Repository will be updated soon.

Best regards,
Stefano



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