On 07/18/2011 10:38 AM, Mike Frysinger wrote:
On Sat, Jul 16, 2011 at 19:18, Alessio Sangalli wrote:
Hi, is there a tool to create an "environemnt image" that I can flash to my NAND?
tools/envcrc will output the binary env blob if you give it the --binary option. but it does not take arbitrary env inputs. ./tools/envcrc --binary > env.bin
In the meanwhile I've written my own utility, but I do not understand the "it does not take arbitrary env inputs".
sounds like it might be a useful addition to tools/envcrc
I could not find it so I rewrote such functionality. If you want, I could extract the relevant part of the code and send it to you. It's quite trivial once I figured out how the U-Boot environment works.
Alternatively, is there a description of how the environment is read, my U-Boot, so that I can write my own program to create such image?
<4 byte crc><var=value>\0[<var=value>\0]...\0
Yes, and the environment has a size specified by ENV_SIZE
bye as