[U-Boot] Modify go to allow chain loading a second u-boot

[Simon Glass]

Hi,

On 3 April 2014 03:40, Helmut Raiger <helmut.raiger at hale.at> wrote:

> Hi,
>
>   for all the wrong reasons I have to load a second u-boot from a first
> one.
>
> I'm finally able to start it, but it only works if I do a
> cleanup_before_linux(),
> i.e. turn off interrupts and caches before the actual 'go'.
>
> For testing I patched the go command, but obviously this can't be
> contributed as such.
>
> Anyone having a suggestion on how to do this?
>
> 1) add option to 'go' command, which is hard as it has variable arguments
>

This seems best to me if you don't want to add a new command. Maybe you
could add a '-c' argument to cleanup?


> 2) add another go command
> 3) use an environment variable to set the option for 'go'


> Theoretically I could use an u-boot image to encapsulate the second u-boot
> and use 'bootm', but I think I'll stumble over the same kind of questions.
>
> Helmut
> PS: this is a re-post (the original one hung on-to the thread where I
> asked for help in the first place).
>
>
Regards,
Simon