[U-Boot-Users] slow boot

Jerry Van Baren gerald.vanbaren at smiths-aerospace.com
Thu Jul 6 13:31:12 CEST 2006


Wolfgang Denk wrote:
> In message <200607061129.34622.takacs.aron at 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




More information about the U-Boot mailing list