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setenv create_bcb 'nand erase.part vf-bcb && writebcb 0x20000 0x20000'
setenv update_configblock 'tftpboot ${loadaddr} configblock.bin && nand write ${loadaddr} 0x800 ${filesize}'
setenv prepare_rootfs 'ubi part ubi && ubi check rootfs || ubi create rootfs'
setenv update_uboot 'tftpboot ${loadaddr} u-boot-nand.imx && nand erase.part u-boot && nand erase.part u-boot-env && nand write ${loadaddr} u-boot'
setenv update_rootfs 'tftpboot ${loadaddr} ubifs.img && run prepare_rootfs && ubi write ${loadaddr} rootfs ${filesize}'
setenv update_new 'run update_uboot; run update_rootfs; reset'
# Upgrade part 1, write new U-Boot, but with old ECC format still...
# Store config block temporarly in memory at kernel_addr_r.
setenv upgrade_part1 'run update_uboot && nand read ${kernel_addr_r} 0x800 0x20 && echo "${upgrade_part1_msg}"'
setenv upgrade_part1_msg 'Successfully updated U-Boot, NAND upgrade required. Enter "reset", interrupt boot process and enter "run setupdate; upgrade_part2" to complete upgrade.'
# Upgrade part 2, use new ECC format for the whole device...
setenv upgrade_part2 'run create_bcb && nand write ${kernel_addr_r} 0x800 0x20 && run update_uboot && nand erase.part ubi && run update_rootfs && echo ${upgrade_part2_msg}'
setenv upgrade_part2_msg 'Successfully upgraded module, enter "reset" to restart the module.'
# fsl_nfc indicates old NAND format (24-bit ECC), start migration process
setenv update 'mtdparts default && if test "${mtdids}" = "nand0=fsl_nfc"; then; run upgrade_part1; else run update_new; fi'
echo 'enter "run update" to update the entire module'
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