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I tried to stop after Uboot, it shows as follows:
U-Boot 2009.08-lab126 (Nov 10 2011 - 00:14:40)
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
ahb clock : 100000000Hz
axi_a clock : 400000000Hz
axi_b clock : 200000000Hz
weim_clock : 100000000Hz
ddr clock : 800000000Hz
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
DRAM: 256 MB
Using default environment
In: serial
Out: logbuff
Err: logbuff
Quick Memory Test 0x70000000, 0xfffe000
POST done in 13 ms
Hit any key to stop autoboot: 0
uboot > ?
? - alias for 'help'
bist - start Built In Self Test
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootm - boot application image from memory
go - start application at address 'addr'
help - print online help
idme - idme - Set nv ram variables
log - manipulate logbuffer
printenv- print environment variables
reset - Perform RESET of the CPU
run - run commands in an environment variable
setenv - set environment variables
version - print monitor version
uboot > dd if=/dev/zero of=/dev/mmcblk0p3 bs=4096 count=4
Unknown command 'dd' - try 'help'
uboot > <INTERRUPT>
uboot >
It seems enter uboot menu, DD command not available here.
Anything I can do?
Thanks
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