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Re: [Qemu-devel] qemu-system-sh4 broken again.
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] qemu-system-sh4 broken again. |
Date: |
Sat, 13 Mar 2010 11:26:47 +0100 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Sat, Mar 13, 2010 at 01:51:35AM -0600, Rob Landley wrote:
> Using qemu-system-sh4, this commit:
>
> e1c09175bc00dd8dfb2ad1b26e1858dcdc109b59 is first bad commit
> commit e1c09175bc00dd8dfb2ad1b26e1858dcdc109b59
> Author: Gerd Hoffmann <address@hidden>
> Date: Tue Dec 8 13:11:44 2009 +0100
>
> zap serial_monitor_mux
>
> The logic in this code obviously predates the multiple monitor
> capability of qemu and looks increasingly silly these days.
>
> I think the intention of this piece of code is to get a reasonable
> default for the -nographic case: have monitor and serial line muxed
> on stdio.
>
> With the new default_serial and default_monitor variables we have now
> doing just that became much easier ;)
>
> Signed-off-by: Gerd Hoffmann <address@hidden>
> Signed-off-by: Anthony Liguori <address@hidden>
>
> Made "-serial stdio" now do:
>
> chardev: opening backend "stdio" failed
> qemu: could not open serial device 'stdio': Inappropriate ioctl for device
>
> Am I using it wrong?
>
> If I don't override it, I instead get:
>
> long read to SH7750_WCR1_A7 (0x000000001f800008) ignored
> long read to SH7750_WCR2_A7 (0x000000001f80000c) ignored
> long read to SH7750_WCR3_A7 (0x000000001f800010) ignored
> long read to SH7750_MCR_A7 (0x000000001f800014) ignored
> long read to SH7750_MCR_A7 (0x000000001f800014) ignored
> sh_serial: unsupported read from 0x10
> qemu-system-sh4: /home/landley/qemu/git/hw/sh_serial.c:285:
> sh_serial_ioport_read: Assertion `0' failed.
>
> Is anybody out there actually using the sh4 emulator? I've gotten it to work
> several times before on various random git snapshots, but never in a release
> version...
>
Would be nice to give that you give the actual command line to try to
use. I am using the stable-0.12 branch (plus some backporting patches
for the MMU) to do development on sh4. HEAD still works correctly here.
I am using the following command line:
~/git/qemu/sh4-softmmu/qemu-system-sh4 -M r2d -kernel zImage -drive
file=sh4.img -serial null -serial stdio -usb -append "root=/dev/sda1
console=tty0 console=ttySC0,115200 noiotrap" -usbdevice keyboard -usbdevice
mouse
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net