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Re: [Qemu-devel] ANN: DetaolB v0.4 is released
From: |
Rob Landley |
Subject: |
Re: [Qemu-devel] ANN: DetaolB v0.4 is released |
Date: |
Tue, 10 Jul 2007 13:34:57 -0400 |
User-agent: |
KMail/1.9.6 |
On Saturday 30 June 2007 13:15:44 Blue Swirl wrote:
> On 6/30/07, Thiemo Seufer <address@hidden> wrote:
> > Johannes Schindelin wrote:
> > > Hi,
> > >
> > > On Sat, 30 Jun 2007, Blue Swirl wrote:
> > > > On 6/30/07, Christian MICHON <address@hidden> wrote:
> > > > > DetaolB aimed to be a "much-less-than-a-floppy" x86 linux live
> > > > > distro. Now, it's evolving more into "a-la-slax" type of distro.
> > > >
> > > > As the number of Sparc32 distributions keeps approaching zero, could
> > > > you consider porting DetaolB to non-x86 CPUs?
> > >
> > > Yes, please!
> >
> > The reason why distributions drop sparc32 is the unmaintained kernel.
> > Nobody stepped up for Linux kernel maintenance in the last years.
> > Debian managed to keep up a sort-of working kernel for the last
> > release, the people who put their time into it are disinclined to
> > repeat this exercise.
>
> But there is a difference in maintaining a kernel suitable for high
> quality distribution with over 18733 packages working in different
> real hardware, versus a test/evaluation distribution with <30 packages
> running on Qemu. I'd see that as an "enhanced qemu-tests.tar.gz".
Just FYI, Firmware Linux builds for sparc and has for months now.
http://landley.net/code/firmware
Go "./build.sh sparc", and wait a bit. It even generates a run-sparc.sh in
the build directory that'll invoke qemu against the kernel and ext2 image it
generated.
That creates a sparc cross compiler, uses it to build a root filesystem
containing a native toolchain for sparc, and packages it into an ext2 image.
Over on arm I've built binutils and gcc natively inside the emulator.
The sparc platform has a problem that if I boot with init as a "hello world"
program everything behaves as expected (there are two in the image for
testing purposes, /tools/bin/hello-dynamic and /tools/bin/hello-static). But
if you boot with init=/tools/bin/bash it hangs. And so do the busybox
shells.
I think it's a uClibc bug on sparc, but haven't made time to track it down.
Either that or the kernel needs something _weird_ for console initialization.
(The cross-compiler and kernel seem to be working fine...)
You can try it out yourself by downloading all the *sparc* files from
http://landley.net/code/firmware/downloads/images and then running:
qemu-system-sparc -nographic -no-reboot -hda image-sparc.ext2 -kernel \
zImage-sparc -append 'rw init=/tools/bin/hello-dynamic panic=1 \
PATH=/tools/bin root=/dev/sda console=ttyS0'
That prints "Hello world!", panics, and exits.
./run-sparc.sh does the exact same command line with "init=/tools/bin/sh"
(bash 2.05b), which hangs. Note that init=/tools/bin/ash (busybox ash) does
the same thing. Haven't debugged beyond that yet...
Rob
P.S. I gave a tutorial about this system at OLS, and my lecture notes are at
http://landley.net/ols/ols2007/tutorial.txt
--
"One of my most productive days was throwing away 1000 lines of code."
- Ken Thompson.
- Re: [Qemu-devel] ANN: DetaolB v0.4 is released, (continued)
Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Cedric Hombourger, 2007/07/04
Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Christian MICHON, 2007/07/04
Re: [Qemu-devel] ANN: DetaolB v0.4 is released,
Rob Landley <=
- Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Blue Swirl, 2007/07/10
- Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Rob Landley, 2007/07/10
- Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Blue Swirl, 2007/07/11
- Re: [Detaolb-devel] [Qemu-devel] ANN: DetaolB v0.4 is released, Christian MICHON, 2007/07/11
- Re: [Detaolb-devel] [Qemu-devel] ANN: DetaolB v0.4 is released, Christian MICHON, 2007/07/11
- Re: [Detaolb-devel] [Qemu-devel] ANN: DetaolB v0.4 is released, Rob Landley, 2007/07/11
- Re: [Detaolb-devel] [Qemu-devel] ANN: DetaolB v0.4 is released, Christian MICHON, 2007/07/11
Re: [Qemu-devel] ANN: DetaolB v0.4 is released, Rob Landley, 2007/07/11
Re: [Detaolb-devel] [Qemu-devel] ANN: DetaolB v0.4 is released, Christian MICHON, 2007/07/11