U-Boot 1.3.3-svn1998 (Mar  5 2012 - 08:10:29)

DRAM:  64 MB
NAND:  NAND Manufacturer id: 98
NAND Device id: 76
NAND device: Manufacturer ID: 0x98, Chip ID: 0x76 (Toshiba NAND 64MiB 3,3V 8-bit)
Bad block table found at page 131040, version 0x01
Bad block table found at page 131008, version 0x01
64 MiB
In:    serial
Out:   serial
Err:   serial
ARM Clock : 400000000 Hz

Hit any key to stop autoboot:  1

U-Boot > help

?       - alias for 'help'
askenv  - get environment variables from stdin
autoscr - run script from memory
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
bootp    - boot image via network using BootP/TFTP protocol
cmp     - memory compare
coninfo - print console devices and information
cp      - memory copy
crc32   - checksum calculation
dhcp    - invoke DHCP client to obtain IP/boot params
echo    - echo args to console
exit    - exit script
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls   - list files in a directory (default /)
forceenv  - force set environment variables
go      - start application at address 'addr'
help    - print online help
iminfo  - print header information for application image
imxtract- extract a part of a multi-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
md      - memory display
mdc     - memory display cyclic
mii     - MII utility commands
mm      - memory modify (auto-incrementing)
mtest   - simple RAM test
mw      - memory write (fill)
mwc     - memory write cyclic
nand    - NAND sub-system
nboot   - boot from NAND device
nfs    - boot image via network using NFS protocol
nm      - memory modify (constant address)
ping    - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
rarpboot- boot image via network using RARP/TFTP protocol
reset   - Perform RESET of the CPU
run     - run commands in an environment variable
saveenv - save environment variables to persistent storage
saves   - save S-Record file over serial line
setenv  - set environment variables
sleep   - delay execution for some time
test    - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
usb     - USB sub-system
usbboot - boot from USB device
version - print monitor version

U-Boot > printenv

baudrate=115200
bootfile="uImage"
verify=n
ethaddr=00:09:b0:47:11:08
filesize=F48000
setparam=ok
bootcmd=nboot.jffs2 0xc0200000 0 0x454000
bootargs=console=ttyS1,115200n8 root=/dev/mtdblock8 rw quiet lpj=999424 rootfstype=yaffs mem=52M ip=off
autostart=yes
bootdelay=1
dspboot=yes
stdin=serial
stdout=serial
stderr=serial
ver=U-Boot 1.3.3-svn1998 (Mar  5 2012 - 08:10:29)

Environment size: 372/16380 bytes

U-Boot > help nand

nand info                  - show available NAND devices
nand device [dev]     - show or set current device
nand read[.jffs2]     - addr off|partition size
nand write[.jffs2]    - addr off|partition size - read/write `size' bytes starting
    at offset `off' to/from memory address `addr'
nand erase [clean] [off size] - erase `size' bytes from
    offset `off' (entire device if not specified)
nand bad - show bad blocks
nand dump[.oob] off - dump page
nand scrub - really clean NAND erasing bad blocks (UNSAFE)
nand markbad off - mark bad block at offset (UNSAFE)
nand biterr off - make a bit error at offset (UNSAFE)
nand lock [tight] [status] - bring nand to lock state or display locked pages
nand unlock [offset] [size] - unlock section

MontaVista(R) Linux(R) Professional Edition 5.0.0 (0802607)

Welcome to MontaVista(R) Linux(R) Professional Edition 5.0.0 (0802607).

Jan  1 00:01:51 login[253]: root login on 'console'

# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00004000 00004000 "params"
mtd1: 00010000 00004000 "2ndbl"
mtd2: 00040000 00004000 "bootloader"
mtd3: 00200000 00004000 "dsp1"
mtd4: 00200000 00004000 "dsp2"
mtd5: 00200000 00004000 "kernel"
mtd6: 00004000 00004000 "bootconf1"
mtd7: 00004000 00004000 "bootconf2"
mtd8: 01000000 00004000 "filesystem1"
mtd9: 01100000 00004000 "filesystem2"
mtd10: 01100000 00004000 "filesystem3"
mtd11: 00400000 00004000 "filesystem4"
mtd12: 003a4000 00004000 "filesystem5"

  OOB Data: 08 f7 3c ff ff ff ff ff ff ff ff ff ff ff ff ff

OOB:
  OOB Data: ff ff ff ff ff ff 53 66 d5 2b d8 25 aa c3 80 cc

  OOB Data: 4f 4f 88 ff ff ff ff ff 00 00 10 00 05 01 04 00

ECC: 1 corrected bitflip(s) at offset 0x00000200