/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.system.cmos.def;
import java.security.PrivilegedExceptionAction;
import javax.naming.NamingException;
import org.jnode.driver.system.cmos.CMOSService;
import org.jnode.naming.InitialNaming;
import org.jnode.plugin.Plugin;
import org.jnode.plugin.PluginDescriptor;
import org.jnode.plugin.PluginException;
import org.jnode.system.resource.ResourceNotFreeException;
import org.jnode.system.resource.ResourceOwner;
import org.jnode.system.resource.SimpleResourceOwner;
import org.jnode.util.AccessControllerUtils;
import org.jnode.vm.VmSystem;
/**
* @author epr
*/
public class CMOSPlugin extends Plugin implements CMOSService {
/**
* The CMOS accesser
*/
private CMOS cmos;
private final RTC rtc = new RTC(this);
/**
* Initialize a new instance
*
* @param descriptor
*/
public CMOSPlugin(PluginDescriptor descriptor) {
super(descriptor);
}
/**
* Gets the value of a CMOS register with a given nr.
*
* @param regnr
* @return The register value
*/
public int getRegister(int regnr) {
return cmos.getRegister(regnr);
}
/**
* Start this plugin
*
* @throws PluginException
*/
protected void startPlugin() throws PluginException {
try {
final ResourceOwner owner = new SimpleResourceOwner("CMOS");
cmos = AccessControllerUtils.doPrivileged(new PrivilegedExceptionAction<CMOS>() {
public CMOS run() throws ResourceNotFreeException {
return new CMOS(owner);
}
});
InitialNaming.bind(NAME, this);
VmSystem.setRtcService(rtc);
} catch (ResourceNotFreeException ex) {
throw new PluginException("Cannot claim IO ports", ex);
} catch (NamingException ex) {
throw new PluginException("Cannot register service", ex);
} catch (Exception ex) {
throw new PluginException("Unknown exception", ex);
}
}
/**
* Stop this plugin
*
* @throws PluginException
*/
protected void stopPlugin() throws PluginException {
InitialNaming.unbind(NAME);
VmSystem.resetRtcService(rtc);
cmos.release();
cmos = null;
}
}