$ microcom -p /dev/ttyUSB0 connected to /dev/ttyUSB0 Escape character: Ctrl-\ Type the escape character followed by c to get to the menu or q to quit barebox 2018.05.0-20190221-1-EAG_3.00-g7f2059e #1 Mon Jul 22 08:44:31 CEST 2019 Board: Eckelmann AG ECU01 mdio_bus: miibus0: probed nand: ONFI flash detected nand: NAND device: Manufacturer ID: 0x2c, Chip ID: 0xb1 (Micron MT29F1G16ABBEAH4), 128MiB, page size: 2048, OOB size: 64 Bad block table found at page 65472, version 0x01 Bad block table found at page 65408, version 0x01 imx-usb 53ff4400.usb: USB EHCI 1.00 imxfb imxfb: i.MX Framebuffer driver malloc space: 0x83e7dde0 -> 0x87cfbbbf (size 62.5 MiB) running /env/bin/init... Check if Memory is flashbased ... __PASS__ Hit CTRL-C to stop autoboot: 0 __DEVELOPER_MODE__ENABLED__ nv variable modified, will save nv variables on shutdown ==> Updating Barebox ... ubi0: scanning is finished ubi0 warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling, reserved 6, need 20 ubi0: registering /dev/nand0.root.ubi ubi0: registering root as /dev/nand0.root.ubi.root ubi0: attached mtd0 (name "nand0.root", size 80 MiB) to ubi0 ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 512 ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096 ubi0: good PEBs: 640, bad PEBs: 0, corrupted PEBs: 0 ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128 ubi0: max/mean erase counter: 127/67, WL threshold: 4096, image sequence number: 15031 ubi0: available PEBs: 0, total reserved PEBs: 640, PEBs reserved for bad PEB handling: 6 UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "root", R/O mode UBIFS (ubi0:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes UBIFS (ubi0:0): FS size: 78344192 bytes (74 MiB, 617 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs) UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB) UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID 8440401c, small LPT model update succeeded Skipping bad block at 0x00040000 nv variables modified, saving them envfs: no envfs (magic mismatch) - envfs never written?