hiddrs , hier, hiew ,hil2s 怎么用？？

/nfsroot #
/nfsroot # ./btools
-h
        print help msg
-i
        install board tools
-u
        uninstall board tools
-V
        print version
------------------------------------------------------
himc       : memory clear
himd       : memory display (8bit)
himd.l     : memory display (32bit)
himm       : memory modify
hivd       : video dump
himdb      : video dump
hiddrs     : ddr statistic
hil2s      : l2 cache statistic
hiew       : extend device write
hier       : extend device read
i2c_read   : i2c device read
i2c_write  : i2c device read
ssp_read   : ssp device read
ssp_write  : ssp device read


/nfsroot # hier
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utils/cmdshell.c:166}cmdstr:hier
usage: hier . sample: M0xA0 0x10 0x40

do errro
[END]
/nfsroot # hiew
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utils/cmdshell.c:166}cmdstr:hiew
usage: hiew . sample: M0xA0 0x10 0x40

do errro
[END]
/nfsroot #

/nfsroot #
/nfsroot # hil2s
*** Board tools : ver0.0.1_20121120 *** Unhandled fault: imprecise external abort (0xc06) at 0xb6f12700

[debug]: {source/utils/cmdshell.c:166}cmdstr:hil2s
Unhandled fault: imprecise external abort (0xc06) at 0xb6f12700
Auto login as root ...
login[1282]: root login on 'ttyS000'
Welcome to HiLinux.
None of nfsroot found in cmdline.
~ #
~ #


~ #
~ # himd 0x201B0004 4
*** Board tools : ver0.0.1_20121120 *** Unhandled fault: external abort on non-linefetch (0x1008) at 0xb6f3e005

[debug]: {source/utils/cmdshell.c:166}cmdstr:himd
====dump memory 0X201B0004====
Bus error
~ #

有谁用过这些工具指令么？？？？可否解释下，小的在此先谢过了！