qemu-doc.texi

QEMU 0.91 source code, supports ARM processor including S3C24xx series

\input texinfo @c -*- texinfo -*-
@c %**start of header
@setfilename qemu-doc.info
@settitle QEMU Emulator User Documentation
@exampleindent 0
@paragraphindent 0
@c %**end of header

@iftex
@titlepage
@sp 7
@center @titlefont{QEMU Emulator}
@sp 1
@center @titlefont{User Documentation}
@sp 3
@end titlepage
@end iftex

@ifnottex
@node Top
@top

@menu
* Introduction::
* Installation::
* QEMU PC System emulator::
* QEMU System emulator for non PC targets::
* QEMU User space emulator::
* compilation:: Compilation from the sources
* Index::
@end menu
@end ifnottex

@contents

@node Introduction
@chapter Introduction

@menu
* intro_features:: Features
@end menu

@node intro_features
@section Features

QEMU is a FAST! processor emulator using dynamic translation to
achieve good emulation speed.

QEMU has two operating modes:

@itemize @minus

@item
Full system emulation. In this mode, QEMU emulates a full system (for
example a PC), including one or several processors and various
peripherals. It can be used to launch different Operating Systems
without rebooting the PC or to debug system code.

@item
User mode emulation. In this mode, QEMU can launch
processes compiled for one CPU on another CPU. It can be used to
launch the Wine Windows API emulator (@url{http://www.winehq.org}) or
to ease cross-compilation and cross-debugging.

@end itemize

QEMU can run without an host kernel driver and yet gives acceptable
performance.

For system emulation, the following hardware targets are supported:
@itemize
@item PC (x86 or x86_64 processor)
@item ISA PC (old style PC without PCI bus)
@item PREP (PowerPC processor)
@item G3 BW PowerMac (PowerPC processor)
@item Mac99 PowerMac (PowerPC processor, in progress)
@item Sun4m/Sun4c/Sun4d (32-bit Sparc processor)
@item Sun4u (64-bit Sparc processor, in progress)
@item Malta board (32-bit and 64-bit MIPS processors)
@item ARM Integrator/CP (ARM)
@item ARM Versatile baseboard (ARM)
@item ARM RealView Emulation baseboard (ARM)
@item Spitz, Akita, Borzoi and Terrier PDAs (PXA270 processor)
@item Luminary Micro LM3S811EVB (ARM Cortex-M3)
@item Luminary Micro LM3S6965EVB (ARM Cortex-M3)
@item Freescale MCF5208EVB (ColdFire V2).
@item Arnewsh MCF5206 evaluation board (ColdFire V2).
@item Palm Tungsten|E PDA (OMAP310 processor)
@end itemize

For user emulation, x86, PowerPC, ARM, 32-bit MIPS, Sparc32/64 and ColdFire(m68k) CPUs are supported.

@node Installation
@chapter Installation

If you want to compile QEMU yourself, see @ref{compilation}.

@menu
* install_linux::   Linux
* install_windows:: Windows
* install_mac::     Macintosh
@end menu

@node install_linux
@section Linux

If a precompiled package is available for your distribution - you just
have to install it. Otherwise, see @ref{compilation}.

@node install_windows
@section Windows

Download the experimental binary installer at
@url{http://www.free.oszoo.org/@/download.html}.

@node install_mac
@section Mac OS X

Download the experimental binary installer at
@url{http://www.free.oszoo.org/@/download.html}.

@node QEMU PC System emulator
@chapter QEMU PC System emulator

@menu
* pcsys_introduction:: Introduction
* pcsys_quickstart::   Quick Start
* sec_invocation::     Invocation
* pcsys_keys::         Keys
* pcsys_monitor::      QEMU Monitor
* disk_images::        Disk Images
* pcsys_network::      Network emulation
* direct_linux_boot::  Direct Linux Boot
* pcsys_usb::          USB emulation
* vnc_security::       VNC security
* gdb_usage::          GDB usage
* pcsys_os_specific::  Target OS specific information
@end menu

@node pcsys_introduction
@section Introduction

@c man begin DESCRIPTION

The QEMU PC System emulator simulates the
following peripherals:

@itemize @minus
@item
i440FX host PCI bridge and PIIX3 PCI to ISA bridge
@item
Cirrus CLGD 5446 PCI VGA card or dummy VGA card with Bochs VESA
extensions (hardware level, including all non standard modes).
@item
PS/2 mouse and keyboard
@item
2 PCI IDE interfaces with hard disk and CD-ROM support
@item
Floppy disk
@item
PCI/ISA PCI network adapters
@item
Serial ports
@item
Creative SoundBlaster 16 sound card
@item
ENSONIQ AudioPCI ES1370 sound card
@item
Adlib(OPL2) - Yamaha YM3812 compatible chip
@item
PCI UHCI USB controller and a virtual USB hub.
@end itemize

SMP is supported with up to 255 CPUs.

Note that adlib is only available when QEMU was configured with
-enable-adlib

QEMU uses the PC BIOS from the Bochs project and the Plex86/Bochs LGPL
VGA BIOS.

QEMU uses YM3812 emulation by Tatsuyuki Satoh.

@c man end

@node pcsys_quickstart
@section Quick Start

Download and uncompress the linux image (@file{linux.img}) and type:

@example
qemu linux.img
@end example

Linux should boot and give you a prompt.

@node sec_invocation
@section Invocation

@example
@c man begin SYNOPSIS
usage: qemu [options] [@var{disk_image}]
@c man end
@end example

@c man begin OPTIONS
@var{disk_image} is a raw hard disk image for IDE hard disk 0.

General options:
@table @option
@item -M @var{machine}
Select the emulated @var{machine} (@code{-M ?} for list)

@item -fda @var{file}
@item -fdb @var{file}
Use @var{file} as floppy disk 0/1 image (@pxref{disk_images}). You can
use the host floppy by using @file{/dev/fd0} as filename (@pxref{host_drives}).

@item -hda @var{file}
@item -hdb @var{file}
@item -hdc @var{file}
@item -hdd @var{file}
Use @var{file} as hard disk 0, 1, 2 or 3 image (@pxref{disk_images}).

@item -cdrom @var{file}
Use @var{file} as CD-ROM image (you cannot use @option{-hdc} and
@option{-cdrom} at the same time). You can use the host CD-ROM by
using @file{/dev/cdrom} as filename (@pxref{host_drives}).

@item -drive @var{option}[,@var{option}[,@var{option}[,...]]]

Define a new drive. Valid options are:

@table @code
@item file=@var{file}
This option defines which disk image (@pxref{disk_images}) to use with
this drive.
@item if=@var{interface}
This option defines on which type on interface the drive is connected.
Available types are: ide, scsi, sd, mtd, floppy, pflash.
@item bus=@var{bus},unit=@var{unit}
These options define where is connected the drive by defining the bus number and
the unit id.
@item index=@var{index}
This option defines where is connected the drive by using an index in the list
of available connectors of a given interface type.
@item media=@var{media}
This option defines the type of the media: disk or cdrom.
@item cyls=@var{c},heads=@var{h},secs=@var{s}[,trans=@var{t}]
These options have the same definition as they have in @option{-hdachs}.
@item snapshot=@var{snapshot}
@var{snapshot} is "on" or "off" and allows to enable snapshot for given drive (see @option{-snapshot}).
@item cache=@var{cache}
@var{cache} is "on" or "off" and allows to disable host cache to access data.
@end table

Instead of @option{-cdrom} you can use:
@example
qemu -drive file=file,index=2,media=cdrom
@end example

Instead of @option{-hda}, @option{-hdb}, @option{-hdc}, @option{-hdd}, you can
use:
@example
qemu -drive file=file,index=0,media=disk
qemu -drive file=file,index=1,media=disk
qemu -drive file=file,index=2,media=disk
qemu -drive file=file,index=3,media=disk
@end example

You can connect a CDROM to the slave of ide0:
@example
qemu -drive file=file,if=ide,index=1,media=cdrom
@end example

If you don't specify the "file=" argument, you define an empty drive:
@example
qemu -drive if=ide,index=1,media=cdrom
@end example

You can connect a SCSI disk with unit ID 6 on the bus #0:
@example
qemu -drive file=file,if=scsi,bus=0,unit=6
@end example

Instead of @option{-fda}, @option{-fdb}, you can use:
@example
qemu -drive file=file,index=0,if=floppy
qemu -drive file=file,index=1,if=floppy
@end example

By default, @var{interface} is "ide" and @var{index} is automatically
incremented:
@example
qemu -drive file=a -drive file=b"
@end example
is interpreted like:
@example
qemu -hda a -hdb b
@end example

@item -boot [a|c|d|n]
Boot on floppy (a), hard disk (c), CD-ROM (d), or Etherboot (n). Hard disk boot
is the default.

@item -snapshot
Write to temporary files instead of disk image files. In this case,
the raw disk image you use is not written back. You can however force
the write back by pressing @key{C-a s} (@pxref{disk_images}).

@item -no-fd-bootchk
Disable boot signature checking for floppy disks in Bochs BIOS. It may
be needed to boot from old floppy disks.

@item -m @var{megs}
Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB.

@item -smp @var{n}
Simulate an SMP system with @var{n} CPUs. On the PC target, up to 255
CPUs are supported. On Sparc32 target, Linux limits the number of usable CPUs
to 4.

@item -audio-help

Will show the audio subsystem help: list of drivers, tunable
parameters.

@item -soundhw @var{card1}[,@var{card2},...] or -soundhw all

Enable audio and selected sound hardware. Use ? to print all
available sound hardware.

@example
qemu -soundhw sb16,adlib hda
qemu -soundhw es1370 hda
qemu -soundhw all hda
qemu -soundhw ?
@end example

@item -localtime
Set the real time clock to local time (the default is to UTC
time). This option is needed to have correct date in MS-DOS or
Windows.

@item -startdate @var{date}
Set the initial date of the real time clock. Valid format for
@var{date} are: @code{now} or @code{2006-06-17T16:01:21} or
@code{2006-06-17}. The default value is @code{now}.

@item -pidfile @var{file}
Store the QEMU process PID in @var{file}. It is useful if you launch QEMU
from a script.

@item -daemonize
Daemonize the QEMU process after initialization.  QEMU will not detach from
standard IO until it is ready to receive connections on any of its devices.
This option is a useful way for external programs to launch QEMU without having
to cope with initialization race conditions.

@item -win2k-hack
Use it when installing Windows 2000 to avoid a disk full bug. After
Windows 2000 is installed, you no longer need this option (this option
slows down the IDE transfers).

@item -option-rom @var{file}
Load the contents of @var{file} as an option ROM.
This option is useful to load things like EtherBoot.

@item -name @var{name}
Sets the @var{name} of the guest.
This name will be display in the SDL window caption.
The @var{name} will also be used for the VNC server.

@end table

Display options:
@table @option

@item -nographic

Normally, QEMU uses SDL to display the VGA output. With this option,
you can totally disable graphical output so that QEMU is a simple
command line application. The emulated serial port is redirected on
the console. Therefore, you can still use QEMU to debug a Linux kernel
with a serial console.

@item -no-frame

Do not use decorations for SDL windows and start them using the whole
available screen space. This makes the using QEMU in a dedicated desktop
workspace more convenient.

@item -full-screen
Start in full screen.

@item -vnc @var{display}[,@var{option}[,@var{option}[,...]]]

Normally, QEMU uses SDL to display the VGA output.  With this option,
you can have QEMU listen on VNC display @var{display} and redirect the VGA
display over the VNC session.  It is very useful to enable the usb
tablet device when using this option (option @option{-usbdevice
tablet}). When using the VNC display, you must use the @option{-k}
parameter to set the keyboard layout if you are not using en-us. Valid
syntax for the @var{display} is

@table @code