help: failed to use qemu

[Daron Chabot]

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


-- dc