Running on QEMU

#Running on QEMU#

The requirements to test frosted on synthetic target are:

• a Linux distribution, or a POSIX-compliant OS which supports the tools described below

How to run the QEMU example synthetic target:

• Clone frosted

git clone git://github.com/insane-adding-machines/frosted.git

• Run QEMU environment setup script by sourcing it, required to have changes to $PATH apply after termination of the script (will install dependencies to ~/frosted-qemu)

. scripts/frosted-qemu-setup

• Use the example frosted kernel pre-defined config for qemu, included in defconfig:

make defconfig TARGET=qemunet

• Download the example frosted-userland config to frosted-userland/kconfig/.config

wget https://git.io/vKgDR -O frosted-userland/kconfig/.config

• Compile frosted

make

• Run the frosted image on qemu

make qemu

• If you want to enable tun/tap connectivity, run the "net" version

make qemunet

---

• Host networking setup example using bridge-utils (if you just want host-qemu networking you do not need to add eth0 (or any other interface) to br0)

brctl addbr br0
brctl addif br0 eth0
ifconfig br0 192.168.20.1 netmask 255.255.255.0 broadcast 192.168.20.255

• Debugging the kernel
  • start qemu in debug mode:

make qemudbg

or, for the net version:

make qemunetdbg

• start the debugger: From another console run arm-frosted-eabi-gdb or arm-none-eabi-gdb and attach to localhost:3333 to start debugging. You can use the following settings in your local .gdbinit script:

 tar ext :3333
 layout src
 file kernel.elf
 stepi
 focus c