Hello u-boot users list,
I am experiencing a problem concerning variables being set and later getting lost.
In order to boot a Linux on a quite small plattform (Eddy CPU: http://sysbas.en.ec21.com/Embedded_CPU_Module--1904028_1904479.html ), I have to reset the variable "OS_SDRAM" from its initial value of "0x20000000" to "0x21000000". If I don't do so, the bootloader reports problems extracting my kernel. This must be due to my kernel being bigger than expected by u-boot.
These are the steps, that I take:
[code] setenv OS_SDRAM 0x21000000 saveenv reset [/code]
Anyway, this way, it works fine.
Sometimes, the bootloader looses this configuration and resets its variable "OS_SDRAM" back to its default value. Once, the bootloader has reset this value, it cannot boot anymore(well, of course not, since I had to manually alter this value in order to make it boot my linux).
Annoyingly, I cannot surely reproduce this error. I tried rebooting it over 3 days in 2-minute-steps and the error won't occur. In addition, I tried giving random input to the console of u-boot for 3 days (again in 2-minute-steps) and still the error won't come up.
Two questions:
1. What else might be the cause of this?
2. How could I prevent u-boot from resetting to its default value?
I'd be happy for any kind of help.
Best regards, Dennis