I believe that there is redundant storage of those environment variables in the flash. (CFG_ENV_ADDR_REDUND etc)
With the BDI2000 you can isue the "dump" command (type "help" in the BDI2000 cli) to copy the contents of the flash into a file on your tftp server. The file needs to be available and writable (tftp client can't create new files, or something), so make an empty file and change access restrictions to 666, and dump the flash contents into that file.
Nicky
2007/6/28, Angad angadsc@gmail.com:
How do you dump the env vriables to a file via the BDI? and is there a way to re-download them the board?
Thanks
Angad wrote:
Doing a setenv and saveenv write the variables to the eeprom. Erasing th eflash via the BDI does not reset those variables. Is there a way to erase the eeprom from the BDI.
Thanks for the replies.
nicky geerts wrote:
I usually change the environment variables with setenv, saveenv and printenv commands, and dump them to a file using the BDI2000 for backup. If later on I need to restore those environment variables, I just write the backup file back to the target flash.
I don't think the BDI2000 is capable of changing the environment variables in flash memory with just one command.
Nicky Geerts
2007/6/28, Leonid Leonid@a-k-a.net:
I don't exactly understand what you are trying to do. Can you please explain more clearly? If you have BDI2000 connected you can use it to re-image the board I think - why to change bootcmd?
Anyway to change bootcmd you probably will need to re-burn entire u-boot environment: it has CRC and rewriting just one variable. It's possible based on u-boot sources write program which take as an input text script, generating u-boot environment, and makes binary image out of it which can be burned to u-boot environment area.
Leonid.
-----Original Message----- From: u-boot-users-bounces@lists.sourceforge.net [mailto:u-boot-users-bounces@lists.sourceforge.net] On Behalf Of Angad Sent: Wednesday, June 27, 2007 7:23 PM To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] Set bootcmd through BDI2000
Hi,
Does anyone know if it is possible to set and env variable through the BDI2000 or set the bootcmd via the BDI2000?
I am trying to download an image to an ppc board and want to be able to re-image the board by changing the bootcmd via the BDI programmer.
Thanks
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