U-Boot# U-Boot SPL 2013.07-dirty (Aug 30 2013 - 18:23:30) musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory USB Peripheral mode controller at 47401000 using PIO, IRQ 0 musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory USB Host mode controller at 47401800 using PIO, IRQ 0 OMAP SD/MMC: 0 mmc_send_cmd : timeout: No status update reading args spl: error reading image args, err - -1 reading u-boot.img reading u-boot.img U-Boot 2013.07-dirty (Aug 30 2013 - 18:23:30) I2C: ready DRAM: 512 MiB WARNING: Caches not enabled NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - readenv() failed, using default environment musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory USB Peripheral mode controller at 47401000 using PIO, IRQ 0 musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory USB Host mode controller at 47401800 using PIO, IRQ 0 Net: not set. Validating first E-fuse MAC cpsw, usb_ether Hit any key to stop autoboot: 0 gpio: pin 53 (gpio 53) value is 1 mmc0 is current device gpio: pin 54 (gpio 54) value is 1 SD/MMC found on device 0 reading uEnv.txt 1039 bytes read in 4 ms (252.9 KiB/s) Importing environment from mmc ... gpio: pin 55 (gpio 55) value is 1 Checking if uenvcmd is set ... gpio: pin 56 (gpio 56) value is 1 Running uenvcmd ... reading zImage 3343296 bytes read in 383 ms (8.3 MiB/s) reading /dtbs/am335x-boneblack.dtb ** Unable to read file /dtbs/am335x-boneblack.dtb ** Kernel image @ 0x80200000 [ 0x000000 - 0x3303c0 ] ERROR: Did not find a cmdline Flattened Device Tree Could not find a valid device tree uenvcmd was not defined in uEnv.txt ... trying eMMC (BeagleBone Black) ... mmc_send_cmd : timeout: No status update mmc1(part 0) is current device gpio: pin 54 (gpio 54) value is 1 SD/MMC found on device 1 reading uEnv.txt 1065 bytes read in 4 ms (259.8 KiB/s) Importing environment from mmc ... gpio: pin 55 (gpio 55) value is 1 Checking if uenvcmd is set ... gpio: pin 56 (gpio 56) value is 1 Running uenvcmd ... reading zImage 3343296 bytes read in 384 ms (8.3 MiB/s) reading uInitrd 2797279 bytes read in 322 ms (8.3 MiB/s) reading /dtbs/am335x-boneblack.dtb ** Unable to read file /dtbs/am335x-boneblack.dtb ** Kernel image @ 0x80200000 [ 0x000000 - 0x3303c0 ] ## Loading init Ramdisk from Legacy Image at 81000000 ... Image Name: initramfs Image Type: ARM Linux RAMDisk Image (uncompressed) Data Size: 2797215 Bytes = 2.7 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ERROR: Did not find a cmdline Flattened Device Tree Could not find a valid device tree uenvcmd was not defined in uEnv.txt ... halting ... U-Boot#