Manuel Sahm wrote: > > Hello, > > > > I want to use an eeprom AND an NANDFLASH for storing the Enviroment Data. > > > > First: The EEPROM should be connected via SPI, so I have to make a c > file within the function for spi_write and spi_read…to use it with the > CFG_CMD_EEPROM. > > right ? > > > > Now my second question: > > I want to achieve that the uboot first looks in NANDFlash, if the ENV > is damaged, look at NANDFLASH_REDUNDAND area [This is what is normally > implemented, I think, and it works], now if these both areas of NAND > Flash are damaged, the ubbot should have a lokk at the eeprom to load > its environment… > > > Why so many backup areas? Is your hardware prone to multiple mass failures? Perhaps you have a hardware problem that needs fixing.
Did you know that the U-Boot binary image itself contains the original copy of the environment? This is the safest and best backup you can use. I would use the EEPROM to load in particular changes to specific U-Boot variables. > Is it possible ?? > With a little effort. Normally the environment is only stored in one place and switched on/off via #defines. I predict a fair amount of restructuring would be necessary but it depends on how you want to go about it, really. > What files do I have to adapt, and where�s the point in the code, > where the printenv/setenv command is attached to the NANDFLASH/EEPROM > Function to load the data ? > Do you know the "grep" command? Try "man grep". Then try in your U-Boot source directory. # grep -r "saveenv" * or # grep -ir "environment" * If you are able to find the code yourself then you will learn the U-Boot codebase a little better. Aras ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ U-Boot-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/u-boot-users
