[U-Boot-Users] slow boot

[U-Boot-Users] slow boot

[Takács Áron]

Hi,

I am using a PXA270-based board with u-boot-1.1.2. I wonder if I could make 
the bootup process faster. I have measured the following times (with a 
stopper watch ...):

-Time to the first output on the serial console (baudrate: 115200): ~3 sec
-Time to "Hit any key to stop autoboot (boot delay: 1s): ~5 sec
-Time to "Starting kernel...": ~8.7sec

So I have delays after the messages: "Err: serial" and "Entry Point: 
a0008000".
I have set "verify=no" in the environment.
Any ideas how to make the boot faster?
Thank you for your help!

?ron Tak?cs

[U-Boot-Users] slow boot

[Wolfgang Denk]

In message <200607061129.34622.takacs.aron@infracont.hu> you wrote:
> 
> -Time to the first output on the serial console (baudrate: 115200): ~3 sec

Sounds as if your system is seriously misconfigured.

Where is your environment stored? Is this by chance in a EEPROM device?

> So I have delays after the messages: "Err: serial" and "Entry Point: > 
> a0008000".
> I have set "verify=no" in the environment.
> Any ideas how to make the boot faster?

The beaviour you see is not normal, but without knowing your hardware
and your modifications to the code  it  is  impossible  to  give  any
specific help.

As a general rule: version 1.1.2 is very old. Please update.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"There's only one kind of woman ..." "Or man, for  that  matter.  You
either believe in yourself or you don't."
	-- Kirk and Harry Mudd, "Mudd's Women", stardate 1330.1

[U-Boot-Users] slow boot

[Jerry Van Baren]

Wolfgang Denk wrote:
> In message <200607061129.34622.takacs.aron@infracont.hu> you wrote:
>> -Time to the first output on the serial console (baudrate: 115200): ~3 sec
> 
> Sounds as if your system is seriously misconfigured.
> 
> Where is your environment stored? Is this by chance in a EEPROM device?

Another possibility is that your UART driver/hardware configuration 
(cache misconfiguration?) is not seeing the UART "Tx ready" flag 
properly so that every time a character is sent to the UART it polls the 
UART flag for the maximum time, making the serial output extremely slow.

> The beaviour you see is not normal, but without knowing your hardware
> and your modifications to the code  it  is  impossible  to  give  any
> specific help.
> 
> As a general rule: version 1.1.2 is very old. Please update.
> 
> Best regards,
> 
> Wolfgang Denk

No hardware knowledge, just speculating...
gvb