[U-Boot] silent console with nand

[U-Boot] silent console with nand

[Bishop, Mark]

Is it possible to have a silent console with the 'silent' environment
variable if the environment is stored in NAND?

Essentially both:
#define CONFIG_SILENT_CONSOLE
#define CONFIG_ENV_IS_IN_NAND

are defined, but I am not seeing a dark console with silent=1.

I've seen the messages concerning the environment stored in SPI Flash
and was probably thinking that it applies to NAND as well.  I'm just
looking for confirmation or another #define to get it to work.  I
realize that another option is to compile it into my default environment
but I want to take advantage of the 'silent' switch.

Thanks.

[U-Boot] silent console with nand

[Wolfgang Denk]

Dear "Bishop, Mark",

In message <5D308BD40154E4439D82454FE483A50206A4F026@EVS4.nam.ci.root> you wrote:
> Is it possible to have a silent console with the 'silent' environment
> variable if the environment is stored in NAND?

The storage location of the environment should have nothing to do with
the functionality.

> Essentially both:
> #define CONFIG_SILENT_CONSOLE
> #define CONFIG_ENV_IS_IN_NAND
> 
> are defined, but I am not seeing a dark console with silent=1.

There may be problems with your current implementation, like the
environment not being available soon enough.  You can test this by
changing the console bausrate using setenv / saveenv.  Cn you still
see all boot messages?

> I've seen the messages concerning the environment stored in SPI Flash
> and was probably thinking that it applies to NAND as well.  I'm just

Again - the storage location has nothign to do with functionality;
but there are some broken configurations out there that should be fixed.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
A modem is a baudy house.

[U-Boot] silent console with nand

[Scott Wood]

On 05/20/2012 02:09 PM, Wolfgang Denk wrote:
> Dear "Bishop, Mark",
> 
> In message <5D308BD40154E4439D82454FE483A50206A4F026@EVS4.nam.ci.root> you wrote:
>> Is it possible to have a silent console with the 'silent' environment
>> variable if the environment is stored in NAND?
> 
> The storage location of the environment should have nothing to do with
> the functionality.
> 
>> Essentially both:
>> #define CONFIG_SILENT_CONSOLE
>> #define CONFIG_ENV_IS_IN_NAND
>>
>> are defined, but I am not seeing a dark console with silent=1.
> 
> There may be problems with your current implementation, like the
> environment not being available soon enough.  You can test this by
> changing the console bausrate using setenv / saveenv.  Cn you still
> see all boot messages?

The environment is often not available early enough when booting from
NAND.  CONFIG_NAND_ENV_DST was meant to address this, but I only see one
board using it so far.  CONFIG_NAND_ENV_DST also may need some fixing
regarding where saveenv writes the environment, if there's a bad block
in the preceding U-Boot image.

-Scott

[U-Boot] silent console with nand

[Wolfgang Denk]

Dear Scott Wood,

In message <4FBA6F26.2060903@freescale.com> you wrote:
>
> > There may be problems with your current implementation, like the
> > environment not being available soon enough.  You can test this by
> > changing the console bausrate using setenv / saveenv.  Cn you still
> > see all boot messages?
> 
> The environment is often not available early enough when booting from
> NAND.  CONFIG_NAND_ENV_DST was meant to address this, but I only see one
> board using it so far.  CONFIG_NAND_ENV_DST also may need some fixing
> regarding where saveenv writes the environment, if there's a bad block
> in the preceding U-Boot image.

I would think that more boards are using this technology; they
probably pre-date the instroduction of CONFIG_NAND_ENV_DST and
do not use CONFIG_NAND_ENV_DST but rather code this manually.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
This is an unauthorized cybernetic announcement.