VIA Technologies ARTiGO A820, Быстрый старт

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ARTiGO A820 Linux BSP v3.2.1 Quick Start Guide
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Next, power on the ARTiGO A820 to initiate the boot process. When prompted, press
any key to stop the boot process, and enter the U-Boot console as illustrated by the
screenshot below.
U-Boot 2014.04 (Nov 19 2015 - 18:49:13)VAB820 ver:3.2.1
CPU: Freescale i.MX6DL rev1.2 at 996 MHz
CPU: Temperature 30 C, calibration data: 0x5894f169
Reset cause: POR
Board: MX6DL-VAB820
I2C: ready
DRAM: 1 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
SF: Detected W25Q32BV with page size 256 Bytes, erase size 4 KiB,
total 4 MiB
No panel detected: default to Hannstar-XGA
Display: Hannstar-XGA (1024x768)
In: serial
Out: serial
Err: serial
Net: FEC [PRIME]
Warning: failed to set MAC address
Normal Boot
Hit any key to stop autoboot: 0
Debug console view of boot process
To list the current U-Boot parameters, use the following command:
=> printenv
Make sure the printout message includes “bootcmd=run bootcmd_auto”.
The default “bootcmd” parameter is set to auto detect the system location by first
attempting to load the kernel from the Micro SD card. If it is not detected it continues to
boot from the eMMC.
To load the kernel from the specified device, refer to the two examples below.
To load the kernel from the Micro SD card, use the following command:
=> setenv bootcmd 'run bootcmd_sd'
=> saveenv
=> boot
To load the kernel from the eMMC, use the following command:
=> setenv bootcmd 'run bootcmd_mmc'
=> saveenv
=> boot
2.4. Restoring Default U-Boot Parameters
If the U-Boot parameters have been modified, the “destroyenv” command in the U-Boot
console can restore the factory defaults settings.
To restart the device, use the “reset” command:
=> destroyenv
=> reset