How to install and configure a QEMU mips64-linux installation.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Last updated 04 May 2015
This gives an apparently stable, but extremely slow, mips64-linux
install. It has the advantage that the idle loop works right and so
when the guest becomes idle, qemu uses only very little host cpu, so
you can leave the guest idling for long periods without bad
performance effects on the host.
More or less following
https://gmplib.org/~tege/qemu.html section 8 (for mips64)
Build qemu-2.2.1 with --target-list including mips64-softmmu
mkdir Mips64-1
cd Mips64-1
wget ftp://ftp.sunet.se/pub/Linux/distributions/debian/dists/wheezy/main/installer-mips/current/images/malta/netboot/vmlinux-3.2.0-4-4kc-malta
wget ftp://ftp.sunet.se/pub/Linux/distributions/debian/dists/wheezy/main/installer-mips/current/images/malta/netboot/initrd.gz
md5sum initrd.gz vmlinux-3.2.0-4-4kc-malta
71f05a4aaf24671fa72e903abd76a448 initrd.gz
307fc61d36cb370ea2b697d587af45a6 vmlinux-3.2.0-4-4kc-malta
# Note. 4G is easily enough to install debian and do a build of Valgrind.
# If you envisage needing more space, now is the time to choose a larger
# number.
/path/to/Qemu221/bin/qemu-img create disk4G.img 4G
/path/to/Qemu221/bin/qemu-system-mips64 \
-M malta -cpu 5Kc -m 256 -hda disk4G.img \
-net nic,macaddr=52:54:00:fa:ce:08 -net user,hostfwd=tcp::5555-:22 \
-kernel vmlinux-3.2.0-4-4kc-malta -initrd initrd.img-3.2.0-4-4kc-malta \
-append "root=/dev/sda1 console=ttyS0 --" -nographic
Do an install, be as vanilla as possible, allow it to create a user
"username", and do not ask it to install any extra software. But,
when you get to here
┌───────────────────┤ [!!] Finish the installation ├────────────────────┐
│ │
┌│ Installation complete │
││ Installation is complete, so it is time to boot into your new system. │
││ Make sure to remove the installation media (CD-ROM, floppies), so │
││ that you boot into the new system rather than restarting the │
││ installation. │
││ │
└│ <Go Back> <Continue> │
│ │
└───────────────────────────────────────────────────────────────────────┘
do "Go Back"
then in the next menu "Execute a shell", "Continue"
This gives you a root shell in the new VM. In that shell:
mount -t proc proc /target/proc
mount --rbind /sys /target/sys
mount --rbind /dev /target/dev
chroot /target bash
/etc/init.d/ssh start
ls /boot
System.map-3.2.0-4-5kc-malta initrd.img-3.2.0-4-5kc-malta
config-3.2.0-4-5kc-malta vmlinux-3.2.0-4-5kc-malta
Then on the host, copy out the vmlinux and initrd:
ssh -p 5555 username@localhost \
"tar -c -f - --exclude=lost+found /boot" | tar xf -
exit
exit
Select "Finish the installation"
Continue
When it reboots, kill qemu from another shell, else it will try to reinstall.
Now start the installation:
/path/to/Qemu221/bin/qemu-system-mips64 \
-M malta -cpu 5Kc -m 256 -hda disk4G.img -net nic,macaddr=52:54:00:fa:ce:08 \
-net user,hostfwd=tcp::5555-:22 -kernel boot/vmlinux-3.2.0-4-5kc-malta \
-initrd boot/initrd.img-3.2.0-4-5kc-malta \
-append "root=/dev/sda1 console=ttyS0" -nographic
System seems to have 256MB memory no matter how much you request.
This is basically a 32 bit system at this point. To get something
that can build 64 bit executables, it is necessary to install
gcc-multilib and g++-multilib.
Now you can ssh into the VM and install stuff as usual:
ssh -XC -p 5555 username@localhost
(on the guest)
become root
apt-get install make g++ gcc subversion emacs gdb automake autoconf
apt-get gcc-multilib g++-multilib
Configuring V on the guest:
./autogen.sh
CFLAGS="-mips64 -mabi=64" CXXFLAGS="-mips64 -mabi=64" \
./configure --prefix=`pwd`/Inst