Hi, I am trying to modify uboot to use the available FAT32 APIs and the mmc driver apis in order to auto magically boot from a SD card if its present in the slot of our board. I know it can be done by statically defining EXTRA_ENVS in the board config file and use the U-boot scripting framwork to do so.
But i do not intend to use just the scripts to acheive that. The reason is we need to modify the config everytime the initramdisk and kernel image size changes.
i am trying to do it using U-boot api's available like the way U-boot api's are used in "common/update.c" to boot from mmc/sd only if the card is available, otherwise boot from NAND. Another question here is whether the flash_api like flash_write/ flash_erase only make sense for NOR flash. Are there any similar API's available for the NAND subsystem.
Thanks in advance for your help. -Alfred