lava-fastmodels 0.1.dev12 (experimental)

ARM Fast Models support code for LAVA

Fast Model support for LAVA

This package contains low level code for managing fast models in LAVA. Currently it is designed to manage NFS mounts, setting up the root filesystem (exporting the provided tarball to the mount point and blessing it with fast-model specific changes, if required). It also contains code for starting the fast model runtime, monitoring execution and eventual shutdown (or forced shutdown, if required).

Support for lava-serial plugin is being considered (to be able to get a LAVA-Serial access to a running fast model emulation)

Requirements

• Working installation of FastModelsPortfolio 7.0 from ARM
• Root access on local machine (to manipulate NFS shares, gained automatically via sudo)
• Bleeding edge version of json-document and more mature versions of lava-tool and their dependencies (in the upcoming release also a bleeding edge version of lava-serial)

Example

(I made this up as that part does not work yet).

To start a fast model on your machine run the following command: $ lava fast-model start --kernel=uImage --initrd=initrd --rootfs=roottfs.tar.gz Unpacking rootfs... done Setting up NFS share... done Starting fast model... done You can connect to the serial console with

$ lava serial console --network localhost:5001

Pressing CTRL-C will terminate this simulation ^C Shutting down... done Removing NFS share... done Removing root filesystem... done $

API

To use fast models in your code you can try the following example. (I just made it up, it does not work yet)

import time from lava.fastmodels.simulators import LinuxSimulator from lava.fastmodels.models import ModelLibrary

class Handler(object):

def on_line(self, line):

print repr(line)

# Get a library, any path works (as long as you have models there) library = ModelLibrary('/srv/lava/instances/dev/var/lib/lava/fastmodels/models') # Get a model from the library model = library['A15x1']

simulator = LinuxSimulator(model, rootfs="rootfs.tar.gz", uImage="uImage") with simulator.start():

serial = simulator.serial_console serial.attach_handler(Handler()) time.sleep(60)