Dingoo A320 forum

I tried to use user space emulation, but the fork() isn't working so you can have a shell but you can't launch anything.
That would give us an enormous speed increase to use user mode emulation... any qemu-mipsel guru here?

For the framebuffer, it is a bit tricky with qemu... I don't remember if it really worked. I think it worked but I couldn't directly see the display. But I could take screenshots.

we can also launch x11vnc which can grab from a framebuffer.
This is very slow but usable.

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qemu-system-mipsel  -L . -m 32 -kernel zImage -initrd rootfs -append "root=/dev/ram console=tty0 console=ttyS0 init=/bin/sh"

All you have to do is to insmod cirrus logic modules

batman52 wrote:

I tried to use user space emulation, but the fork() isn't working so you can have a shell but you can't launch anything.
That would give us an enormous speed increase to use user mode emulation... any qemu-mipsel guru here?

Maybe this could still be useful to test stand-alone apps instead of the whole system?

It should be able to launch static application, yes

For the framebuffer, it is a bit tricky with qemu... I don't remember if it really worked. I think it worked but I couldn't directly see the display. But I could take screenshots.

That doesn't sound SO good...

we can also launch x11vnc which can grab from a framebuffer.
This is very slow but usable.

This shouldn't be too bad! But I still can actually understand HOW it works...

You have to launch x11vnc on qemu, and access it from a vncviewer on you PC by setting a port redirection... that is not easy I know...

I tried this:

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qemu-system-mipsel  -L . -m 32 -kernel zImage -initrd rootfs -append "root=/dev/ram console=tty0 console=ttyS0 init=/bin/sh"

but i get:
qemu:could not load kernel zImage
so I added the -nographic option (following the example) and it gives.
it seems to me that the kernel is loaded and "wants" write on the screen, that isn't properly configured...

Take this kernel:
http://people.debian.org/~aurel32/qemu/ ... -4kc-malta

it works for me

All you have to do is to insmod cirrus logic modules

You mean that i have to compile them?

Take this kernel:
http://people.debian.org/~aurel32/qemu/ ... -4kc-malta
it works for me

Could you please try to write a short draft/tutorial to put on a wiki for other people?

batman52 wrote:Thanks for your replies cyberic99!

Take this kernel:
http://people.debian.org/~aurel32/qemu/ ... -4kc-malta
it works for me

So assuming that it has a binary compatibility with dingux, you basically used a debian kernel?...
I'm starting to understand how the whole damn thing works!

Here is what I mean to try during the weekend:

1) a simple console app (probabilly something like nano) from debian binaries repo on dingoo hw using your script

What script?

2) qemu user space + dingux kernel + dingux app

I think it won't work, because the dingux kernel is not really standard... Not sure

3) if (1==OK) { qemu user space + dingux kernel + debian app }

Qemu user space does not need any kernel

Please try it on a static app first, it should work. Then for a dynamic apps, you will need all required libs (use LDD is system emulation mode to know what libs are needed)

3) qemu user space + debian kernel + dingux app

Qemu user space does not need any kernel



4) if (3==OK) { qemu vm + debian kernel + dingux app}

Could you please try to write a short draft/tutorial to put on a wiki for other people?

Obviously yes (if some of these attempts work)!

cyberic99 wrote:Yes. And I can move the mouse now

cyberic99 wrote:What applications would you include?
I think a PDF reader and an image viewer could be great, at least
and maybe dillo web browser