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[Qemu-devel] [Bug 700774] Re: sh7750.c:672: sh7750_mmct_writel: Assertio
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [Bug 700774] Re: sh7750.c:672: sh7750_mmct_writel: Assertion `0' failed. |
Date: |
Sun, 09 Jan 2011 23:03:04 -0000 |
The problem there is that for some unknown reasons your kernel is
flushing the iTLB through the memory-mmaped interface (which is not yet
implemented) instead of using the MMUCR.TI bit.
I was actually playing with the SH4 MMU code this week-end and wrote
this missing part of the code, but I was unable to test it. Your QEMU
image helped me a lot, and I confirm that my code was correct.
I have just commited the patch qemu HEAD.
** Changed in: qemu
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/700774
Title:
sh7750.c:672: sh7750_mmct_writel: Assertion `0' failed.
Status in QEMU:
Fix Committed
Bug description:
qemu 0.12.5 on ubuntu ends up with this error when booting a SH4 machine
usb 1-1: Manufacturer: 1
INIT: version 2.86 booting
Error, no support currently for 8 bpp frame buffers
Trying to change pixel format...
Please wait: booting...
Switched to a 32 bpp 8,8,8 frame buffer
Starting udev
Remounting root file system...
Caching udev devnodes
Populating dev cache
root: mount: mount point /proc/bus/usb does not exist
qemu-system-sh4: /build/buildd/qemu-kvm-0.12.3+noroms/hw/sh7750.c:672:
sh7750_mmct_writel: Assertion `0' failed.
Aborted
the commandline is
qemu-system-sh4 -M r2d --snapshot -m 512 -kernel zImage-qemush4.bin -usb
-usbdevice wacom-tablet --no-reboot -localtime -monitor null -serial vc -serial
stdio -drive file=/tmp/console-image-qemush4.ext3 -append 'console=ttySC1
noiotrap earlyprintk=sh-sci.1 root=/dev/sda rw debug user_debug=-1' -net none
--nographic
The kernel and root file system images are found on
http://www.uclibc.org/~kraj/qemush4/console-image-qemush4.ext3
http://www.uclibc.org/~kraj/qemush4/zImage-qemush4.bin