qemu git master has a prebuilt seabios with CONFIG_ATA_DMA=y now.
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https://bugs.launchpad.net/bugs/1191326
Title:
QNX 4 doesn't boot on qemu >= 1.3
Status in QEMU:
Confirmed
Bug de
It turns out modifying code is not needed at all. The only thing that is
needed is to configure SeaBIOS with CONFIG_ATA_DMA=y.
So the steps needed to make QNX 4 work on current QEMU are
1. Download SeaBIOS source and make sure the configuration has CONFIG_ATA_DMA=y
set
2. Build SeaBIOS
3. Run qem
@Christiat: thank you so much, you are right! I put together a quick
hack[1] to seabios to forcefully enable bus master bit on ata device and
QNX booted!
[1] I just added an unconditional call to the pci_enable_busmaster(pci);
to the init_pciata() function in ata.c
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Hi,
I had the same problem, and maybe it can help. I wrote my own toy OS
with a PATA / IDE driver back in 2012 using older version of QEMU and
everything worked fine. These days, I tried that on a recent version
(2.5) and it failed with exactly the same behaviour - lots of zeros
being written duri
I wonder - would be a record using rr of any help? I can create record
for QEMU 1.2.0 where it works and on current QEMU.
Also, I did a bit of debugging myself around the DMA code as per comment
#3 it was introduced in a commit that changed some of the DMA. What I
did was that I added some debug p
This is still a problem with QEMU 2.11.
Note that the problem in #10 is unrelated to the issue (though GUI works
for with the the demo floppy). The problem mentioned in this bug is
related to a QNX that is already installed to a disk. Unfortunately the
QNX demo floppy that was once free and which
I've just tried to launch QNX 4.25 ISO bootdisk on qemu-system-x86_64 built
from current git.
QEMU screen is skewed (see on screenshot). I tried all different options in
-vga key - all the same.
** Attachment added: "qemu-qnx4.png"
https://bugs.launchpad.net/qemu/+bug/1191326/+attachment/499
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1191326
Title:
QNX 4 doesn
Triaging old bug tickets ... can you still reproduce this problem with
the latest version of QEMU (currently v2.9.0)?
** Changed in: qemu
Status: New => Incomplete
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I am also experiencing this problem QNX 4.25 images that were created
under 1.0 no longer work when I've upgraded to 2.0 or 2.1 qemu.
The error message that I receive is the same. The problem is with the
virtual disk driver, it performs the initial boat loader, then when the
OS goes to load the f
KVM doesnt make any difference.
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https://bugs.launchpad.net/bugs/1191326
Title:
QNX 4 doesn't boot on qemu >= 1.3
Status in QEMU:
New
Bug description:
I am using virtual machi
On Linux hosts are you using KVM? Does it make any difference?
Is there a freely downloadable image that we can use for debugging?
Thanks,
Paolo
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Output from valgrind running latest qemu downloaded from git. Qemu crashed of
course.
If I can check something more, please let me know.
==29109== Memcheck, a memory error detector
==29109== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==29109== Using Valgrind-3.7.0 and LibVEX;
problem appeared in this commit:
commit b90600eed3c0efe5f3260853c873caf51c0677b1
Author: Avi Kivity
Date: Wed Oct 3 16:42:37 2012 +0200
dma: make dma access its own address space
Instead of accessing the cpu address space, use an address space
configured by the caller.
Please use git-bisect to find out which change between 1.2.0 and 1.3.0
broke things for you.
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https://bugs.launchpad.net/bugs/1191326
Title:
QNX 4 doesn't boot on qemu >= 1.3
Status i
with qemu 1.6 is even worse - qemu crash every time when QNX detects
hard disk
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Title:
QNX 4 doesn't boot on qemu >= 1.3
Status in QEMU:
New
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