RE: Without MACH_ option Early printk (DEBUG_LL)

Mohammed, Afzal
2012-09-03T04:27:38Z

Hi,

On Fri, Aug 31, 2012 at 23:53:32, Nicolas Pitre wrote:
> On Fri, 31 Aug 2012, Hiremath, Vaibhav wrote:
> > On Fri, Aug 31, 2012 at 22:43:36, Russell King - ARM Linux wrote:
> > > On Fri, Aug 31, 2012 at 08:24:51PM +0530, Vaibhav Hiremath wrote:

> > > > AM335X EVM (based on AM33XX device) only supports DT boot mode and
> > > > doesn't have CONFIG_MACH_AM335XEVM option defined. Some time back during
> > > > baseport submission we had aligned that, we won't create separate EVM
> > > > options, killing the board file all-together.
> > > >
> > > > Having said that, the early printk option (DEBUG_LL) is broken, the
> > > > auto-generated file "./include/generated/mach-types.h" still refers to
> > > > CONFIG_MACH_AM335XEVM option,
> > > machine types are entirely meaningless for DT based systems.
> > >
> > > > Can you comment on this? Based on that I will submit the patch.
> > >
> > > Pointless. You can't use machine_is_am335xevm() when you're using DT.
> > >
> >
> > They how do you recommend to resolve early prink issue (required during
> > decompression)?
>
> Right now the best you can do is to have empty stubs that display
> nothing.

Won't having compile time selection of debug uart over machine based
runtime detection help here ?

Regards
Afzal