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I can stop at Uboot and input bist, result is as follows, is there any thing I can do in with bist command?
U-Boot 2009.08-lab126 (Nov 10 2011 - 00:14:55)
CPU: Freescale i.MX50 family 1.1V at 800 MHz
mx50 pll1: 800MHz
mx50 pll2: 400MHz
mx50 pll3: 216MHz
ipg clock : 50000000Hz
ipg per clock : 50000000Hz
uart clock : 24000000Hz
cspi clock : 54000000Hz
ahb clock : 100000000Hz
axi_a clock : 400000000Hz
axi_b clock : 200000000Hz
weim_clock : 100000000Hz
ddr clock : 200000000Hz
esdhc1 clock : 80000000Hz
esdhc2 clock : 80000000Hz
esdhc3 clock : 80000000Hz
esdhc4 clock : 80000000Hz
MMC: FSL_ESDHC: 0, FSL_ESDHC: 1
Board: Whitney WFO
Boot Reason: [POR]
Boot Device: MMC
Board Id: 00614011144508VG
S/N: B011140714740V0J
I2C: ready
DRAM: 256 MB
Using default environment
In: serial
Out: serial
Err: serial
POST done in 2 ms
Battery voltage: 4096 mV
bist > ?
? - alias for 'help'
autoscr - DEPRECATED - use "source" command instead
base - print or set address offset
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootm - boot application image from memory
check - perform MMC CRC32 check
cmp - memory compare
coninfo - print console devices and information
cp - memory copy
crc32 - checksum calculation
diag - perform board diagnostics
echo - echo args to console
fail - fail blink fail pattern on LED
fastboot- Fastboot
fstor - File Storage
go - start application at address 'addr'
halt - halt board
help - print online help
i2c - I2C sub-system
idme - idme - Set nv ram variables
iminfo - print header information for application image
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
loopw - infinite write loop on address range
md - memory display
mm - memory modify (auto-incrementing address)
mmc - MMC sub system
mmcinfo - mmcinfo <dev num>-- display MMC info
mtest - simple RAM read/write test
mw - memory write (fill)
nm - memory modify (constant address)
ocotp - OCOTP sub system
panic - panic halt
pass - pass blink pass pattern on LED
pmic - pmic - PMIC utility commands
printenv- print environment variables
reset - Perform RESET of the CPU
run - run commands in an environment variable
setenv - set environment variables
sleep - delay execution for some time
source - run script from memory
sspi - SPI utility commands
version - print monitor version
bist >
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