help: failed to use qemu

[Joel Sherrill]

Daron Chabot wrote:
> Joel Sherrill wrote:
>   
>> Daron Chabot wrote:
>>     
>>> On 10-Feb-09, at 7:02 AM, PowerMan wrote:
>>>
>>>  
>>>       
>>>> I do it as the follow steps:
>>>> 1. download QEMU from  http://bellard.org/qemu/qemu-0.9.1-i386.tar.gz
>>>> 2. install it
>>>>     tar xfz qemu-0.9.1-i386.tar.gz -C /
>>>> 3. download rtems floppy image from ftp server :
>>>>     ftp://ftp.rtems.com/pub/rtems/qemu/i386-pc/rtems-boot.img
>>>> 4. download ftp://ftp.rtems.com/pub/rtems/qemu/i386-pc/rtems-grub.cfg
>>>>     and copy it to my root directory /
>>>> 5. mkdir /capture
>>>>    cp hello.exe /capture/capture.exe
>>>> 6. run qemu
>>>>     qemu -fda rtems-boot.img -boot a -hda /dev/sda
>>>>
>>>> but the capture.exe (which is actually helloworld I build with  
>>>> rtems-4.7.3) does not run as I excepted.
>>>> This capture.exe could run on my host by modifying /boot/grub/menu.lst
>>>> I type the following commands in grub:
>>>> grub> set root=(hd0,0)
>>>> grub> set kernel=/capture/capture.exe
>>>> grub> boot
>>>>
>>>> then grub told me:
>>>> error: no loaded kernel
>>>>
>>>> I type the following commands in grub:
>>>> grub> set root=(hd0,0)
>>>> grub> multiboot /capture/capture.exe
>>>>
>>>> then grub told me:
>>>> error: Couldn't open file
>>>>
>>>> Could somebody help me?
>>>>
>>>> My host is openSUSE 11.1, my disk information is:
>>>> /dev/sda1              3091312    516528   2417752  18% /
>>>> udev                    252876      5428    247448   3% /dev
>>>> /dev/sda8              3605268    153972   3268160   5% /home
>>>> /dev/sda7              1130540    221192    851920  21% /tmp
>>>> /dev/sda9              6412052   3541120   2545216  59% /usr
>>>> /dev/sda6              1130540    193556    879556  19% /var
>>>>
>>>> I type the following commands in grub:
>>>> grub> ls
>>>>
>>>> then grub told me:
>>>> (fd0) (hd0) (hd0,0) (hd0,4) (hd0,5) (hd0,6) (hd0,7) (hd0,8)
>>>>
>>>> they didn't match my host disk partition number
>>>>
>>>>     
>>>>         
>>> Grub is not a requirement for using Qemu, and may actually 
>>> complicate  the matter.
>>>
>>> I've had success with variations on the following command:
>>>
>>>     qemu -no-reboot -m 128 -boot n -tftp 
>>> /path/to/exe/parent/directory - bootp /yourRtemsApp.exe -serial stdio
>>>   
>>>       
>> I can make this work for hello and ticker but not for networked
>> applications.  Do you have a way to run networked applications
>> this way?
>>     
>
> Nope. Sorry. I haven't found the magic qemu-cmdline/network-config combo 
> yet. It has been awhile since I was playing around with Qemu and 
> networked RTEMS apps, but I recall that one of the problems for me was 
> that mac os x has no concept of tun/tap interfaces (at least not 
> natively; there is a third-party driver, but I had no luck with it).
>
> I'll revisit things tonight and see if I figure anything out.
>
>   
I can run networked applications just not after using tftp/bootp.
I have to boot them from a floppy.

I am curious if the Intel FXP driver works on qemu.  :)
>> I am trying to have some demos for a GSoC/RTEMS presentation
>> on Monday at University of Tennessee at Chattanooga and was
>> actually trying this out today. :)
>>
>> --joel
>>     
>
>   


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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