Diff for /wikisrc/ports/evbarm/qemu_arm.mdwn between versions 1.3 and 1.4

version 1.3, 2014/01/11 23:04:46 version 1.4, 2014/01/12 00:26:13
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 [QEMU](http://wiki.qemu.org/Main_Page) open source processor emulator.  [QEMU](http://wiki.qemu.org/Main_Page) open source processor emulator.
 This can be extremely useful for development and testing.  This can be extremely useful for development and testing.
 This is a placeholder until useful information gets added; once that  
 is done, it should be linked to the port/evbarm page.  
 # Introduction  # Introduction
  - general notes for what works and what doesn't go here.  QEMU emulates ARM's Integrator/CP board. You can run NetBSD under it.
   Older NetBSD had the problem to run under QEMU's emulated Integrator/CP
   Sergio L√≥pez had created the patch for NetBSD current and had posted
   to port-arm mailing list in [6 Febrary, 2013](http://mail-index.NetBSD.org/port-arm/2013/02/06/msg001739.html).
 # Requirements  # Requirements
  - information on what is needed (QEMU versions known to work or not,  * pkgsrc/emulators/qemu 1.6.2 and 1.7.0
    pointers to how to install via pkgsrc or whatever)  * INTEGRATOR_CP kernel of NetBSD/evbearm 6.99.28 or later
  - also information on which evbarm kernels are known to be able to boot  (some provious versions should work, but not tested)
    under QEMU.  
   ## Preparing QEMU
 # Booting and Installation  You can install latest qemu with the following commands.
  - maybe some information about how to actually boot a kernel, first  It is assumed that your pkgsrc tree is in /usr/pkgsrc directory.
  - how to get networking/etc working  
  - what kinds of userland are supported and how to get there.       # cd /usr/pkgsrc/emulators/qemu
       # make install
   ## Preparing NetBSD userland and kernel
   You can create INTEGRATOR_CP kernel, and kernel/userland tarball with
   the following commands.
   It is assumed that your NetBSD src tree is in /usr/src directory.
       $ cd /usr/src
       $ ./build.sh -U -T /usr/tools/evbearm-el -O /usr/obj/evbearm-el \
         -D /usr/NewWorld/evbearm-el -R /usr/release/evbearm-el \
         -m evbearm release
       $ ./build.sh -U -T /usr/tools/evbearm-el -O /usr/obj/evbearm-el \
         -D /usr/NewWorld/evbearm-el -R /usr/release/evbearm-el \
         -m evbearm kernel=INTEGRATOR_CP
   # Booting
   INTEGRATOR_CP kernel has no disk drive support.
   You should setup netboot environment.
   ## Setting up netboot environment
   You can use existing NetBSD or other Unix like operating system environment
   for host netboot.
   You can also utilize qemu-system-amd64 or qemu-system-i386 to host
   tftp is not needed, kernel is specified in commandline of qemu-system-arm.
   Only NFS root is needed.
   In detail see [Diskless NetBSD howto's Setting up the NFS server section](http://www.netbsd.org/docs/network/netboot/nfs.html).
   # Booting INTEGRATOR_CP kernel
   You can boot INTEGRATOR_CP kernel with the following commandline.
   It is assumed that the host machine uses bge0 to connect to your network.
       # ifconfig bridge0 create
       # brconfig bridge0 add bge0
       # ifconfig bridge0 up
       # ifconfig tap0 create
       # ifconfig tap0 up
       # brconfig bridge0 add tap0
       $ qemu-system-arm -M integratorcp -cpu arm1136 -m 512m -kernel netbsd.gz.ub -serial stdio -net nic -net tap,fd=3 3<>/dev/tap0
   # After booted
   You will get the following boot messages.
       Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
           2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
           The NetBSD Foundation, Inc.  All rights reserved.
       Copyright (c) 1982, 1986, 1989, 1991, 1993
           The Regents of the University of California.  All rights reserved.
       NetBSD 6.99.28 (INTEGRATOR_CP) #0: Sat Jan 11 23:47:15 UTC 2014
       total memory = 255 MB
       avail memory = 246 MB
       sysctl_createv: sysctl_create(machine_arch) returned 17
       timecounter: Timecounters tick every 10.000 msec
       mainbus0 (root)
       cpu0 at mainbus0 core 0: ARM1136J-S r1p3 (ARM11J V6J core)
       cpu0: DC enabled IC enabled WB disabled EABT
       cpu0: isar: [0]=0x140011 [1]=0x12002111 [2]=0x11231111 [3]=0x1102131, [4]=0x141, [5]=0
       cpu0: mmfr: [0]=0x1130003 [1]=0x10030302 [2]=0x1222110 [3]=0
       cpu0: pfr: [0]=0x111 [1]=0x1
       cpu0: 4KB/32B 4-way L1 Instruction cache
       cpu0: 64KB/32B 4-way write-through L1 Data cache
       vfp0 at cpu0: VFP11
       vfp0: mvfr: [0]=0x11111111 [1]=0
       ifpga0 at mainbus0: Build 0, Rev A, Manufacturer Unknown, ASB, Little-endian,
       ifpga0: FPGA unknown, SYSCLK 2.00MHz
       ifpga0: vendor 0x0000 product 0x0000 (miscellaneous prehistoric)
       pci_configure_bus done
       sm0 at ifpga0 addr 0xb8000000 irq 27
       sm0: SMC91C111, revision 1, buffer size: 8192
       sm0: MAC address 52:54:00:12:34:56, default media MII (internal PHY)
       plcom0 at ifpga0 addr 0x6000000 irq 1
       plcom0: console
       plcom1 at ifpga0 addr 0x7000000 irq 2
       plrtc0 at ifpga0 addr 0x5000000
       pci0 at ifpga0 bus 0
       pci0: i/o space, memory space enabled
       timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
       clock: hz=100 stathz = 100 profhz = 500
       timecounter: Timecounter "ifpga" frequency 62500 Hz quality 100
       boot device: <unknown>
       root device: sm0
       dump device: 
       file system (default generic): 
       root on sm0
       nfs_boot: trying DHCP/BOOTP
       nfs_boot: DHCP next-server:
       nfs_boot: my_domain=elements.tetera.org
       nfs_boot: my_addr=
       nfs_boot: my_mask=
       nfs_boot: gateway=
       root on
       root file system type: nfs
       init path (default /sbin/init): 
       init: trying /sbin/init
   You will see many error messages from src/sys/arch/evbarm/ifpga/ifpga_clock.c.
       statclockhandler: Statclock overrun
   After NetBSD is booted, you can setup sm0 network interface with dhcpcd command.
       # dhcpcd sm0
 # Using QEMU to debug the kernel  # Using QEMU to debug the kernel
  - there is info elsewhere on the wiki about this; maybe adapt to ARM   - there is info elsewhere on the wiki about this; maybe adapt to ARM

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