U-Boot SPL 2014.07-00097-g772e173 (Jul 25 2014 - 20:02:52) U-Boot 2014.07-00097-g772e173 (Jul 25 2014 - 20:02:52) TEGRA124 Board: NVIDIA Jetson TK1 I2C: ready DRAM: 2 GiB MMC: Tegra SD/MMC: 0, Tegra SD/MMC: 1 In: serial Out: serial Err: serial Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 2  0 Tegra124 (Jetson TK1) # Tegra124 (Jetson TK1) # usb reset (Re)start USB... USB0: USB EHCI 1.10 scanning bus 0 for devices... 1 USB Device(s) found USB1: USB EHCI 1.10 scanning bus 1 for devices... 2 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found scanning usb for ethernet devices... Warning: asx0 using MAC address from net device 1 Ethernet Device(s) found Tegra124 (Jetson TK1) # setenv bootargs 'ignore_loglevel console=ttyS0,115200n8 rw root=/dev/mmcblk0p1 rootwait gpt debug init=/bin/bash noinitrd' Tegra124 (Jetson TK1) # setenv ipaddr 192.168.100.102; setenv serverip 192.168.100.1; setenv tftpserverip 192.168.100.1 Tegra124 (Jetson TK1) # tftpboot 0x81000000 zImage.tegra_defconfig Using asx0 device TFTP from server 192.168.100.1; our IP address is 192.168.100.102 Filename 'zImage.tegra_defconfig'. Load address: 0x81000000 Loading: *EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 T EHCI timed out on TD - token=0x8008d80 Retry count exceeded; starting again