[PATCH] ARM: OMAP2+: Warn about deprecated legacy booting mode

[Tony Lindgren]

* Pali Rohár <pali.rohar at gmail.com> [141126 10:59]:
> On Wednesday 26 November 2014 19:19:35 Tony Lindgren wrote:
> > 
> > Maybe Pali can try to restart that discussion? To me it seems
> > the /proc/cpuinfo should be the same as it's a user
> > interface. Sorry forgot the details of the previous
> > discussion..
> > 
> 
> Yes, two days ago I again wrote emails about this problem...
> 
> E.g. one of them, see: https://lkml.org/lkml/2014/11/24/774
> 
> > And with which app was that? Sorry I forgot..
> > 
> 
> More applications/libraries for N900 which running on Maemo 5 
> system. Some of them are Nokia proprietary, some of them are open 
> source and some are mine.
> 
> Basically problem is that non DT boot provides this info in 
> /proc/cpuinfo:
> 
> Hardware        : Nokia RX-51 board
> Revision        : 0012
> 
> New DT boot provides this:
> 
> Hardware        : Generic OMAP3 (Flattened Device Tree)
> Revision        : 0000

Oh you can easily fix that by adding a n900 specific
DT_MACHINE_START entry to mach-omap2/board-generic.c.

The revision entry you can populate too in pdata-quirks.c,
or maybe add something generic to populate it based on the
cmdline or a dts entry as I believe that comes from the
legacy ATAGs. I think that's just the system_rev or some
other *_rev global in the kernel.

Regards,

Tony