If you use the environment provided by the initenv.txt script you have several choices for boot options. Most of the boilerplate has been provided; you just need to set your choices.
Note: Refer Section Running the Re-flash Procedure for modifications in the initenv.txt script files required to be able to run the dvsdk demos that comes OMAP3530 DVSDK. Also Refer Alternate Boot Methods
Kernel choices:
OMAP3EVM # setenv get_kernel run nand_kernel (get kernel from flash) OMAP3EVM # setenv get_kernel run tftp_kernel (get custom kernel from TFTP)Initrd choices:
OMAP3EVM # setenv get_initrd run nand_initrd (get kernel from flash) OMAP3EVM # setenv get_initrd run tftp_initrd (get custom image from TFTP)File-system choices:
OMAP3EVM # setenv bootcmd run bootargs_rd (use an initrd ramdisk) OMAP3EVM # setenv bootcmd run bootargs_fs (use a JFFS file-system in flash) OMAP3EVM # setenv bootcmd run bootargs_nfs (use an NFS root directory)Save your choices:
OMAP3EVM # nand unlock (only MICRON!) OMAP3EVM # saveenv (save to flash)To run a JFFS file-system or a ramdisk image from flash you need to make sure the appropriate image is in flash. You can use the reflash.txt script to load the appropriate image.
Re-flash choices:
OMAP3EVM # run rf_all_rd (update all using full ramdisk) OMAP3EVM # run rf_all_min_rd (update all using minimal ramdisk) OMAP3EVM # run rf_all_fs (update all using JFFS image) OMAP3EVM # run rf_rd (update just the full ramdisk) OMAP3EVM # run rf_min_rd (update just the full ramdisk) OMAP3EVM # run rf_fs (update just the JFFS image)Note 1: The two ramdisk images and JFFS are all mutually exclusive in Flash as they occupy the same partition. (Running ramdisk from tftp does not require flash space).
Note 2: The current U-boot only allows 40 environment variables. Do not saveenv after the reflash script has been submitted. Instead complete the reflash and reboot before making env changes.
Note 3: For reflashing choices for Micron nand please select the commands which are marked by _new.(For example 'rf_all_fs_new' for using JFFS filesystem and 'rf_all_rd_new' for using full ramdisk).
