[U-Boot] environmental "baudrate" not used at boot up

[Aggrwal Poonam-B10812]

> -----Original Message-----
> From: u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de]
> On Behalf Of Wood Scott-B07421
> Sent: Thursday, January 20, 2011 1:28 AM
> To: chrisv at cyberswitching.com
> Cc: u-boot at lists.denx.de
> Subject: Re: [U-Boot] environmental "baudrate" not used at boot up
> 
> On Tue, 18 Jan 2011 21:34:45 -0800
> <chrisv at cyberswitching.com> wrote:
> 
> > On Sun, Jan 16, 2011 at 06:01:22AM -0800, chrisv at cyberswitching.com
> wrote:
> > > ...
> > > Any advice on where to take it from here?
> >
> > Hi everyone,
> >
> > I investigated this a little further, and I'm wondering if the problem
> > is related to the initialization ordering in lib_arm/board.c.
> >
> > Here's the sequence:
> >
> >    start_armboot():
> >    1. init_baudrate() -> getenv_r() -> serial_setbrg()
> >    2. env_relocate()
> >
> > Note that init_baudrate() calls getenv_r("baudrate") and passes either
> > the result (on success) or CONFIG_BAUDRATE (on error) to
> > serial_setbrg().  Only after this does the environment get relocated
> > using env_relocate().
> 
> The full NAND code only works after relocation.  So you cannot read out
> the NAND environment, in the normal way, before serial init -- you get
> the default environment instead.
> 
> If you are booting from NAND, I suggest using CONFIG_NAND_ENV_DST to have
> the NAND SPL load the environment at the same time as it loads U-Boot.
> If you're using some preloader other than U-Boot's NAND SPL, you'll need
> to see if it supports something similar.
Hello Scott

Is this feature available/tested on any FSL platform. The code you pointed to does not seem to be used by FSL platforms.

It would be good idea to pull this in for P1/P2 RDB nand boot loader.

Regards
Poonam

> 
> -Scott
> 
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot