QEMU support status regarding hppa/parisc
Starting with QEMU version 2.12 (April 2018), qemu fully supports 32-bit hppa user emulation (hppa-linux-user) and 32-bit hppa system emulation (qemu-system-hppa). All necessary changes have been merged into the upstream qemu git tree.
The emulated machine is a HP B160L desktop machine, with one or more 32-bit PA7100LC CPUs.
The QEMU emulation is able to run Linux and HP-UX. HP-UX support still needs improvement which is being worked on.
QEMU on parisc has been made available by:
- Richard Henderson: QEMU CPU emulation (32-bit only), QEMU hardware divers
- Helge Deller: QEMU hardware drivers, SeaBIOS PDC firmware
- Sven Schnelle: Lots of fixes all over QEMU and SeaBIOS (SCSI, CPU emulation fixes, SeaBIOS PDC firmware)
Ready-to-run QEMU image for parisc
Download Debian hard disc image:
tar xvfj debian-10-hdd-img.tar.bz2
./hppa-softmmu/qemu-system-hppa -drive file=debian-10-hdd.img -nographic -serial mon:stdio -accel tcg,thread=multi -smp cpus=4
Log in as root, root password is "rootme"
How to build QEMU from source
Check out the qemu git tree
Run configure, e.g.
- (for system emulation) ./configure --target-list=hppa-softmmu --enable-numa
- (for user emulation) ./configure --target-list=hppa-linux-user --disable-stack-protector --prefix=/home/qemu-hppa/chroot-unstable --interp-prefix=/home/qemu-hppa/chroot-unstable --static
How to run QEMU with Debian-10 installer image
- Create a virtual hard disc once:
qemu-img create -f qcow2 hdd.img 50G
- download a Linux install image, e.g.
- Start emulator with the installer image once:
./hppa-softmmu/qemu-system-hppa -drive file=hdd.img -drive file=debian-10.0-hppa-NETINST-1.iso,media=cdrom -boot order=d -nographic -serial mon:stdio
- Choose typical installation options, the defaults are OK.
- Either skip the step "Configure the Package manager", or configure the mirror as with hostname "ftp.ports.debian.org", and directory "/debian-ports"
- Shut down virtual machine after installation
- Start emulator with installed operating system any time:
./hppa-softmmu/qemu-system-hppa -drive file=hdd.img -nographic -serial mon:stdio -accel tcg,thread=multi -smp cpus=2
- Edit the sources.list (/etc/apt/sources.list) file:
deb http://ftp.ports.debian.org/debian-ports unstable main deb [arch=all] http://ftp.debian.org/debian unstable main deb-src http://ftp.debian.org/debian unstable main
Some QEMU notes
Prefer the e1000 driver over the rtl8129 card. The latter gives irq issues with Dino emulation.
Possible qemu options:
- -accel tcg,thread=multi - always use this to enable parallel tcg (otherwise all guest CPUs run on one host CPU)
- -smp cpus=4 - define number of CPUs in the guest (maximum CPUs: 32)
- -boot menu=on - Firmware: enable interactive mode (boot prompt)
- -boot order=c - Firmware: Boot from hard disc
- -boot order=d - Firmware: Boot from CD/DVD
- -serial mon:stdio use serial console
- -nographic - no graphics device
- -device VGA - provide PCI VGA graphic card
Tips and Tricks when running an emulation
- Linux kernel >= 4.14 runs best. Initial Linux kernel optimizations were added to kernel >= 4.9.
- The "INTERRUPT KEY" mentioned sometimes by HP-UX can be emulated with the "Ctrl-\" key combination
- In case you lost the HP-UX root password, boot at ISL 'hpux -is' and then give a new password with running "passwd".
Possible emulation guest targets
Future QEMU work
- Does HP-UX has some kind of "sleep" assembler instruction in it's idle loop which can be used to lower qemu power consumption?
- Fix virtio-drivers in SeaBIOS (endianess-bugs, because SeaBIOS is originally only Little-endian from x86)
- Emulate Lasi (i82596) and Tulip (DEC 21x40) network cards in Qemu
- Artist graphics emulation in Qemu
- STI text emulation in SeaBIOS with VGA
- More correct emulation of B160L in Qemu, e.g. seriell ports, PS/2 keyboard & mouse, graphics card
- Elroy PCI emulation, then emulate e.g. a C3000?
- PA2.0/64bit (low prio)
- Push SeaBIOS changes upstream!!