removed outdated info
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2130 c046a42c-6fe2-441c-8c8c-71466251a162
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qemu-doc.texi
156
qemu-doc.texi
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@ -1115,9 +1115,8 @@ contained in @file{qemu-ifup} can be executed as root. You must verify
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that your host kernel supports the TAP network interfaces: the
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device @file{/dev/net/tun} must be present.
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See @ref{direct_linux_boot} to have an example of network use with a
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Linux distribution and @ref{sec_invocation} to have examples of
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command lines using the TAP network interfaces.
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See @ref{sec_invocation} to have examples of command lines using the
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TAP network interfaces.
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@subsection Using the user mode network stack
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@ -1167,146 +1166,31 @@ basic example.
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This section explains how to launch a Linux kernel inside QEMU without
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having to make a full bootable image. It is very useful for fast Linux
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kernel testing. The QEMU network configuration is also explained.
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kernel testing.
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@enumerate
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@item
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Download the archive @file{linux-test-xxx.tar.gz} containing a Linux
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kernel and a disk image.
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@item Optional: If you want network support (for example to launch X11 examples), you
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must copy the script @file{qemu-ifup} in @file{/etc} and configure
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properly @code{sudo} so that the command @code{ifconfig} contained in
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@file{qemu-ifup} can be executed as root. You must verify that your host
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kernel supports the TUN/TAP network interfaces: the device
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@file{/dev/net/tun} must be present.
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When network is enabled, there is a virtual network connection between
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the host kernel and the emulated kernel. The emulated kernel is seen
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from the host kernel at IP address 172.20.0.2 and the host kernel is
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seen from the emulated kernel at IP address 172.20.0.1.
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@item Launch @code{qemu.sh}. You should have the following output:
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@smallexample
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> ./qemu.sh
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Connected to host network interface: tun0
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Linux version 2.4.21 (bellard@@voyager.localdomain) (gcc version 3.2.2 20030222 @/(Red Hat @/Linux 3.2.2-5)) #5 Tue Nov 11 18:18:53 CET 2003
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BIOS-provided physical RAM map:
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BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
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BIOS-e801: 0000000000100000 - 0000000002000000 (usable)
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32MB LOWMEM available.
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On node 0 totalpages: 8192
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zone(0): 4096 pages.
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zone(1): 4096 pages.
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zone(2): 0 pages.
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Kernel command line: root=/dev/hda sb=0x220,5,1,5 ide2=noprobe ide3=noprobe ide4=noprobe @/ide5=noprobe console=ttyS0
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ide_setup: ide2=noprobe
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ide_setup: ide3=noprobe
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ide_setup: ide4=noprobe
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ide_setup: ide5=noprobe
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Initializing CPU#0
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Detected 2399.621 MHz processor.
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Console: colour EGA 80x25
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Calibrating delay loop... 4744.80 BogoMIPS
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Memory: 28872k/32768k available (1210k kernel code, 3508k reserved, 266k data, 64k init, @/0k highmem)
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Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
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Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
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Mount cache hash table entries: 512 (order: 0, 4096 bytes)
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Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
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Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
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CPU: Intel Pentium Pro stepping 03
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Checking 'hlt' instruction... OK.
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POSIX conformance testing by UNIFIX
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Linux NET4.0 for Linux 2.4
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Based upon Swansea University Computer Society NET3.039
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Initializing RT netlink socket
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apm: BIOS not found.
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Starting kswapd
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Journalled Block Device driver loaded
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Detected PS/2 Mouse Port.
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pty: 256 Unix98 ptys configured
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Serial driver version 5.05c (2001-07-08) with no serial options enabled
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ttyS00 at 0x03f8 (irq = 4) is a 16450
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ne.c:v1.10 9/23/94 Donald Becker (becker@@scyld.com)
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Last modified Nov 1, 2000 by Paul Gortmaker
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NE*000 ethercard probe at 0x300: 52 54 00 12 34 56
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eth0: NE2000 found at 0x300, using IRQ 9.
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RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
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Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
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ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
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hda: QEMU HARDDISK, ATA DISK drive
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ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
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hda: attached ide-disk driver.
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hda: 20480 sectors (10 MB) w/256KiB Cache, CHS=20/16/63
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Partition check:
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hda:
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Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996
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NET4: Linux TCP/IP 1.0 for NET4.0
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IP Protocols: ICMP, UDP, TCP, IGMP
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IP: routing cache hash table of 512 buckets, 4Kbytes
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TCP: Hash tables configured (established 2048 bind 4096)
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NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
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EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
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VFS: Mounted root (ext2 filesystem).
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Freeing unused kernel memory: 64k freed
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Linux version 2.4.21 (bellard@@voyager.localdomain) (gcc version 3.2.2 20030222 @/(Red Hat @/Linux 3.2.2-5)) #5 Tue Nov 11 18:18:53 CET 2003
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QEMU Linux test distribution (based on Redhat 9)
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Type 'exit' to halt the system
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sh-2.05b#
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@end smallexample
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@item
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Then you can play with the kernel inside the virtual serial console. You
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can launch @code{ls} for example. Type @key{Ctrl-a h} to have an help
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about the keys you can type inside the virtual serial console. In
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particular, use @key{Ctrl-a x} to exit QEMU and use @key{Ctrl-a b} as
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the Magic SysRq key.
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@item
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If the network is enabled, launch the script @file{/etc/linuxrc} in the
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emulator (don't forget the leading dot):
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The syntax is:
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@example
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. /etc/linuxrc
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qemu -kernel arch/i386/boot/bzImage -hda root-2.4.20.img -append "root=/dev/hda"
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@end example
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Then enable X11 connections on your PC from the emulated Linux:
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Use @option{-kernel} to provide the Linux kernel image and
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@option{-append} to give the kernel command line arguments. The
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@option{-initrd} option can be used to provide an INITRD image.
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When using the direct Linux boot, a disk image for the first hard disk
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@file{hda} is required because its boot sector is used to launch the
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Linux kernel.
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If you do not need graphical output, you can disable it and redirect
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the virtual serial port and the QEMU monitor to the console with the
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@option{-nographic} option. The typical command line is:
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@example
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xhost +172.20.0.2
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qemu -kernel arch/i386/boot/bzImage -hda root-2.4.20.img \
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-append "root=/dev/hda console=ttyS0" -nographic
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@end example
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You can now launch @file{xterm} or @file{xlogo} and verify that you have
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a real Virtual Linux system !
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@end enumerate
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NOTES:
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@enumerate
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@item
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A 2.5.74 kernel is also included in the archive. Just
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replace the bzImage in qemu.sh to try it.
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@item
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In order to exit cleanly from qemu, you can do a @emph{shutdown} inside
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qemu. qemu will automatically exit when the Linux shutdown is done.
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@item
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You can boot slightly faster by disabling the probe of non present IDE
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interfaces. To do so, add the following options on the kernel command
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line:
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@example
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ide1=noprobe ide2=noprobe ide3=noprobe ide4=noprobe ide5=noprobe
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@end example
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@item
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The example disk image is a modified version of the one made by Kevin
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Lawton for the plex86 Project (@url{www.plex86.org}).
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@end enumerate
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Use @key{Ctrl-a c} to switch between the serial console and the
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monitor (@pxref{pcsys_keys}).
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@node pcsys_usb
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@section USB emulation
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