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| -rw-r--r-- | qemu-doc.texi | 152 |
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diff --git a/qemu-doc.texi b/qemu-doc.texi index 40667e3f42..a9ffe7f2f7 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -1115,9 +1115,8 @@ contained in @file{qemu-ifup} can be executed as root. You must verify that your host kernel supports the TAP network interfaces: the device @file{/dev/net/tun} must be present. -See @ref{direct_linux_boot} to have an example of network use with a -Linux distribution and @ref{sec_invocation} to have examples of -command lines using the TAP network interfaces. +See @ref{sec_invocation} to have examples of command lines using the +TAP network interfaces. @subsection Using the user mode network stack @@ -1167,146 +1166,31 @@ basic example. This section explains how to launch a Linux kernel inside QEMU without having to make a full bootable image. It is very useful for fast Linux -kernel testing. The QEMU network configuration is also explained. +kernel testing. -@enumerate -@item -Download the archive @file{linux-test-xxx.tar.gz} containing a Linux -kernel and a disk image. - -@item Optional: If you want network support (for example to launch X11 examples), you -must copy the script @file{qemu-ifup} in @file{/etc} and configure -properly @code{sudo} so that the command @code{ifconfig} contained in -@file{qemu-ifup} can be executed as root. You must verify that your host -kernel supports the TUN/TAP network interfaces: the device -@file{/dev/net/tun} must be present. - -When network is enabled, there is a virtual network connection between -the host kernel and the emulated kernel. The emulated kernel is seen -from the host kernel at IP address 172.20.0.2 and the host kernel is -seen from the emulated kernel at IP address 172.20.0.1. - -@item Launch @code{qemu.sh}. You should have the following output: - -@smallexample -> ./qemu.sh -Connected to host network interface: tun0 -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 -BIOS-provided physical RAM map: - BIOS-e801: 0000000000000000 - 000000000009f000 (usable) - BIOS-e801: 0000000000100000 - 0000000002000000 (usable) -32MB LOWMEM available. -On node 0 totalpages: 8192 -zone(0): 4096 pages. -zone(1): 4096 pages. -zone(2): 0 pages. -Kernel command line: root=/dev/hda sb=0x220,5,1,5 ide2=noprobe ide3=noprobe ide4=noprobe @/ide5=noprobe console=ttyS0 -ide_setup: ide2=noprobe -ide_setup: ide3=noprobe -ide_setup: ide4=noprobe -ide_setup: ide5=noprobe -Initializing CPU#0 -Detected 2399.621 MHz processor. -Console: colour EGA 80x25 -Calibrating delay loop... 4744.80 BogoMIPS -Memory: 28872k/32768k available (1210k kernel code, 3508k reserved, 266k data, 64k init, @/0k highmem) -Dentry cache hash table entries: 4096 (order: 3, 32768 bytes) -Inode cache hash table entries: 2048 (order: 2, 16384 bytes) -Mount cache hash table entries: 512 (order: 0, 4096 bytes) -Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) -Page-cache hash table entries: 8192 (order: 3, 32768 bytes) -CPU: Intel Pentium Pro stepping 03 -Checking 'hlt' instruction... OK. -POSIX conformance testing by UNIFIX -Linux NET4.0 for Linux 2.4 -Based upon Swansea University Computer Society NET3.039 -Initializing RT netlink socket -apm: BIOS not found. -Starting kswapd -Journalled Block Device driver loaded -Detected PS/2 Mouse Port. -pty: 256 Unix98 ptys configured -Serial driver version 5.05c (2001-07-08) with no serial options enabled -ttyS00 at 0x03f8 (irq = 4) is a 16450 -ne.c:v1.10 9/23/94 Donald Becker (becker@@scyld.com) -Last modified Nov 1, 2000 by Paul Gortmaker -NE*000 ethercard probe at 0x300: 52 54 00 12 34 56 -eth0: NE2000 found at 0x300, using IRQ 9. -RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize -Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 -ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx -hda: QEMU HARDDISK, ATA DISK drive -ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 -hda: attached ide-disk driver. -hda: 20480 sectors (10 MB) w/256KiB Cache, CHS=20/16/63 -Partition check: - hda: -Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996 -NET4: Linux TCP/IP 1.0 for NET4.0 -IP Protocols: ICMP, UDP, TCP, IGMP -IP: routing cache hash table of 512 buckets, 4Kbytes -TCP: Hash tables configured (established 2048 bind 4096) -NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. -EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended -VFS: Mounted root (ext2 filesystem). -Freeing unused kernel memory: 64k freed - -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 - -QEMU Linux test distribution (based on Redhat 9) - -Type 'exit' to halt the system - -sh-2.05b# -@end smallexample - -@item -Then you can play with the kernel inside the virtual serial console. You -can launch @code{ls} for example. Type @key{Ctrl-a h} to have an help -about the keys you can type inside the virtual serial console. In -particular, use @key{Ctrl-a x} to exit QEMU and use @key{Ctrl-a b} as -the Magic SysRq key. - -@item -If the network is enabled, launch the script @file{/etc/linuxrc} in the -emulator (don't forget the leading dot): +The syntax is: @example -. /etc/linuxrc +qemu -kernel arch/i386/boot/bzImage -hda root-2.4.20.img -append "root=/dev/hda" @end example -Then enable X11 connections on your PC from the emulated Linux: -@example -xhost +172.20.0.2 -@end example - -You can now launch @file{xterm} or @file{xlogo} and verify that you have -a real Virtual Linux system ! - -@end enumerate +Use @option{-kernel} to provide the Linux kernel image and +@option{-append} to give the kernel command line arguments. The +@option{-initrd} option can be used to provide an INITRD image. -NOTES: -@enumerate -@item -A 2.5.74 kernel is also included in the archive. Just -replace the bzImage in qemu.sh to try it. - -@item -In order to exit cleanly from qemu, you can do a @emph{shutdown} inside -qemu. qemu will automatically exit when the Linux shutdown is done. +When using the direct Linux boot, a disk image for the first hard disk +@file{hda} is required because its boot sector is used to launch the +Linux kernel. -@item -You can boot slightly faster by disabling the probe of non present IDE -interfaces. To do so, add the following options on the kernel command -line: +If you do not need graphical output, you can disable it and redirect +the virtual serial port and the QEMU monitor to the console with the +@option{-nographic} option. The typical command line is: @example -ide1=noprobe ide2=noprobe ide3=noprobe ide4=noprobe ide5=noprobe +qemu -kernel arch/i386/boot/bzImage -hda root-2.4.20.img \ + -append "root=/dev/hda console=ttyS0" -nographic @end example -@item -The example disk image is a modified version of the one made by Kevin -Lawton for the plex86 Project (@url{www.plex86.org}). - -@end enumerate +Use @key{Ctrl-a c} to switch between the serial console and the +monitor (@pxref{pcsys_keys}). @node pcsys_usb @section USB emulation |