MX6Q SABRELITE U-Boot > echo $clearenv
sf probe 1 && sf erase 0xc0000 0x2000 && echo restored environment to factory default

MX6Q SABRELITE U-Boot > reboot
Unknown command 'reboot' - try 'help'
MX6Q SABRELITE U-Boot > reset
resetting ...


U-Boot 2009.08 (Jul 05 2012 - 15:37:27)

CPU:   Freescale i.MX 6 family 0.0V at 792 MHz
Temperature:   can't get valid data!
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock     : 66000000Hz
ipg per clock : 66000000Hz
uart clock    : 80000000Hz
cspi clock    : 60000000Hz
ahb clock     : 132000000Hz
axi clock   : 264000000Hz
emi_slow clock: 29333333Hz
ddr clock     : 528000000Hz
usdhc1 clock  : 200000000Hz
usdhc2 clock  : 200000000Hz
usdhc3 clock  : 200000000Hz
usdhc4 clock  : 200000000Hz
nfc clock     : 24000000Hz
Board: MX6Q-SABRELITE:[ WDOG]
Boot Device: I2C
I2C:   ready
DRAM:   1 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1
JEDEC ID: 0xbf:0x25:0x41
Reading SPI NOR flash 0xc0000 [0x2000 bytes] -> ram 0x276009b8
SUCCESS

*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   got MAC address from IIM: 00:19:b8:00:f7:45
FEC0 [PRIME]
Warning: FEC0 MAC addresses don't match:
Address in SROM is         00:19:b8:00:f7:45
Address in environment is  00:01:02:03:04:05

Hit any key to stop autoboot:  0
mmc0 is current device
reading /6q_bootscript

** Unable to read "/6q_bootscript" from mmc 0:1 **
Loading file "/6q_bootscript" from mmc device 0:1 (xxa1)
Failed to mount ext2 filesystem...
** Bad ext2 partition or disk - mmc 0:1 **
Card did not respond to voltage select!
mmc1(part 0) is current device
MMC: block number 0x1 exceeds max(0x0)
** Can't read from device 1 **

** Unable to use mmc 1:1 for fatload **
** Bad partition 1 **

MX6Q SABRELITE U-Boot > setenv bootcmd_mmc 'for disk in 0 1 ; do mmc dev ${disk} ;for fs in fat ext2 ; do ${fs}load mmc ${disk}:1 10008000 /6x_bootscript && source 10008000 ; done ; done'
MX6Q SABRELITE U-Boot > saveenv
Saving Environment to SPI Flash...
Erasing SPI flash...Erasing SPI NOR flash 0xc0000 [0x2000 bytes]
..SUCCESS

Writing to SPI flash...Writing SPI NOR flash 0xc0000 [0x2000 bytes] <- ram 0x276009b8
SUCCESS

done
MX6Q SABRELITE U-Boot > boot
mmc0 is current device
reading /6x_bootscript

5452 bytes read
## Executing script at 10008000
Unknown command 'setexpr' - try 'help'
----------- run fastboot here
usage: fatload <interface> <dev[:part]> <addr> <filename> [bytes]
usage: fatload <interface> <dev[:part]> <addr> <filename> [bytes]
!!!! Error loading imx6dl-sabrelite.dtb
Loading file "/6x_bootscript" from mmc device 0:1 (xxa1)
Failed to mount ext2 filesystem...
** Bad ext2 partition or disk - mmc 0:1 **
Card did not respond to voltage select!
mmc1(part 0) is current device
MMC: block number 0x1 exceeds max(0x0)
** Can't read from device 1 **

** Unable to use mmc 1:1 for fatload **
** Bad partition 1 **