请教专家：
我用的是DM6467，在启动系统后，执行encodedecode 时出错了。
CMEM Error: init: Failed to open /dev/cmem: 'No such file or directory'
已经执行完毕loadmodules.sh 而且也正常。我用lsmod | grep cmem也能看到模块加载了。
但是还是有那个错误。，DDR是256MB 的，和开发包默认配置一样，重编了cmemk.ko 还是不行。 看错误提示，就用mknod cmem b 128 512（设备号随便取的，因为感觉这也不太靠谱），也不行。
请教下问题还会出现在哪里，我还可以怎么尝试。
信息如下：
Please press Enter to activate this console. /bin/sh: can't access tty; job cont
rol turned off
#
# cd /opt/dvsdk/
# ls
cmemk.ko encodedecode loopbackCombo.x64P
dsplinkk.ko loadmodules.sh mytest
# ./mytest
Hello world!
# ./loadmodules.sh
ioremap_nocache(0x87800000, 8388608)=0xc9200000
allocated heap buffer 0xc9200000 of size 0x4ac000
cmem initialized 3 pools between 0x87800000 and 0x88000000
dsplinkk: no version for "struct_module" found: kernel tainted.
dsplinkk: module license 'DSP/BIOS(TM) LINK' taints kernel.
DSPLINK Module (1.50) created on Date: Jan 3 2008 Time: 13:16:55
# ./encodedecode
CMEM Error: init: Failed to open /dev/cmem: 'No such file or directory'
Encodedecode demo started.
TraceUtil> Error: Failed to open codec engine "encodedecode"
TraceUtil> Error: Aborting TraceUtil_start
Error: Failed to create display devivpif capture vpif capture.1: No decoder regi
stered
ce
Error: Failed to create capture device, 720P component input connected?
Error: Failed to open codec engine encodedecode
Error: Failed to open codec engine encodedecode
# lsmod | grep cmemk
cmemk 20072 0