Am Mittwoch, 20. September 2006 21:25 schrieb Blue Swirl:
Great work! I can also confirm that it works and CPU is halted correctly.
Here it doesn't work with linux 2.6.13. Is there a special configuration
option or kernel version required to make it work?
regards,
Jörg
Am Donnerstag, 21. September 2006 10:53 schrieb Aurelien Jarno:
You also need to update openbios from the latest SVN. Then prtconf
should report a device called power-management (and not
xxxpower-management).
Thank you for this information. Now it works and helps to save a lot of
battery
Am Samstag, 27. Mai 2006 21:30 schrieb Blue Swirl:
For some reason, bash and strace didn't work inside Sparc32 system
emulator. I finally found the reason by observing strange Linux behaviour
relating to MMU no-fault mode. No fault mode seems to apply only to
supervisor accesses, not user
Am Samstag, 27. Mai 2006 22:21 schrieb Joerg Platte:
Yes, booting a small system with udev works! qemu in graphical mode boots
up to the login prompt. But unfortunately each character i tried to type in
is corrupt. Hence, its not possible to log in. In console mode getty causes
a kernel oops
Am Montag, 22. Mai 2006 21:12 schrieb Joerg Platte:
Hi!
PS: Booting a normal SPARC-Image with init, hotplug, ... seems to work now
much better than before. There is no bash segfault any more:
Shit, the bash still not works (I forgot the bash symlink pointing to a
dash :-). But programs using
Am Donnerstag, 18. Mai 2006 19:53 schrieb Blue Swirl:
I've checked a lot of the executed instructions in qemu and cannot find
any problems up to now. Does somebody else has an idea what to check? The
test program simply adds two float variables (fadds-instruction) in a
loop and this crashes
Am Montag, 17. April 2006 10:49 schrieb Blue Swirl:
Hi!
This command fails when installing kernel and modules:
qemu-system-sparc -kernel vmlinux-2.6.11+tcx -cdrom
debian-30r4-sparc-binary-1.iso -hda hd -initrd debian-30r4-sparc.initrd
-nographic -append 'cdrom ramdisk_size=16384 devfs=mount
Am Dienstag, 11. April 2006 21:21 schrieb Blue Swirl:
Hi!
Great work! Now the Debian 3.0r4 installer with 2.6.11+tcx kernel almost
finishes. Performance is also much better.
I tried to boot a deb-bootstrapped SPARC image. But the first executed script
segfaults when executing another command
Am Freitag, 7. April 2006 17:44 schrieb Blue Swirl:
Hi!
The attached patch is an updated version of my previous patch. Now it applies
cleanly to cvs head and the read and write performance is increased.
regards,
Jörg
--- esp.c 2006-04-10 14:51:37.0 +0200
+++ esp.c.new 2006-04-10
Am Freitag, 7. April 2006 17:44 schrieb Blue Swirl:
Hi!
Maybe this patch helps?
The attached patch is an updated version of your patch. With whis patch I was
able to copy files from one directory to another on a disk image. After
unmounting the image, e2fsck reported no errors on this image.
Am Freitag, 7. April 2006 17:44 schrieb Blue Swirl:
Hi!
Thank you for the excellent analysis of the problem! Looks like Qemu
doesn't handle the case where DMA length and SCSI length are not equal.
Exact.
So Linux splits the transfer into two parts to use two separate pieces of
buffers.
Am Mittwoch, 5. April 2006 19:36 schrieb Blue Swirl:
Hi!
Today I did some more tests to determine, what's going wrong. At first, Linux
flushes the page entries for the 14 buffers that are to be written to disk:
IOMMU: page flush f001c000
IOMMU: page flush f001d000
IOMMU: page flush f001e000
Am Dienstag, 4. April 2006 21:27 schrieb Joerg Platte:
Hi!
To find this problem, I enabled debugging in the esp.c file and printed the
mapped address (after iommu mapping). In some cases the mapped address is
zero:
ESP: DMA address 0beb8000
ESP: DMA address
I didn't find a manual
Am Mittwoch, 5. April 2006 19:36 schrieb Blue Swirl:
Hi!
I don't have any better documentation either, I just coded against what
Proll and Linux expect. But the theory of operation is simple. Much like
OK, I thought I was just too stupid to find good documentation :-)
how the MMU translates
Am Mittwoch, 5. April 2006 19:36 schrieb Blue Swirl:
Hi!
The DMA controllers for both ESP and Lance are within the same page. This
means that in Qemu, DMA controller register accesses for either of them go
to just one of these. It just happens to work, but maybe this causes the
problem. You
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