On 30 Dec 2008 at 22:42, Wolfgang Denk wrote:
It is difficult to make recommendations when you're providing inconsistent input. In your previous message you wrote:
I have a board running U-Boot/Linux. U-Boot program, two U-Boot environments, Linux kernel and root filesystem for Linux are stored in a NOR Flash.
Now you claim "I don't have Linux".
Can you please decide whether or not you have Linux running on that board?
I'm sorry for the misunderstanding.
Linux really runs on my board, but only after I store the kernel and the root filesystem on the Flash memory. And to do these operations, I must have a good U-Boot environment.
So I have a source board with a good U-Boot environment and Linux, and a destination board (picked from the shelf) with just U-Boot and its default environment (no Linux runs on it).
I can copy the good U-Boot environment from the source board to a file by using Linux, but I can't use Linux on the destination board to store the good environment in the memory.
I think the best solution is to use Linux on the source board to copy the good U-Boot environment in a image file. On the destination board, I can download (by tftp) the image and store it on the Flash at the correct address. In this way, I'll use only U-Boot on the destination board to retrieve the good environment. From that, I can install kernel and root filesystem.
Another possibility is to printenv on the source board, copy the text result from the terminal into a text file, append "setenv " at the top of each lines, substitute = character with space, insert the quotes where needed and paste the result in the terminal of the destination board.
You could (and probaly should) put the constant part of your definitions into the default environment, and use a script image for the rest.
Just now I'm reading about the scripting capabilities of U-Boot. It's interesting. Starting from which U-Boot version they are available?
Just another question. I have two redundant U-Boot environments. Should I copy both of them in two different images, or are they the same and I can copy the first into the second?
Regards, Giuseppe