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8393ac6895
* Introduces Schedule_context * Use fast-interrupts or normal interrupts * Add mode-transition between secure/non-secure world * Limit system resources for Genode apps due to non-secure world This commit implements the newly introduced Vm session interface to be used on top of TrustZone capable Armv7 CPUs. Therefore a new Schedule_context is introduced in the kernel. Threads and Vms are both Schedule_contexts used by the scheduler. In contrast to a thread a vm uses a different assembler mode switch to the non-secure, virtual world, as well as another exception is used, when the non-secure world is left. For both worlds to co-exist the interrupt-controller needs to be configured, so that the secure (Genode) world uses fast-interrupts only, and the non-secure world only legacy interrupts. The only TrustZone capable platform the base-hw kernel works on top of is the CoreTile Express 9x4 for the Versatile Express motherboard. For a virtual machine working properly on top some platform resources must be reserved. Therefore there exist two flavours of this platform now, one with the 'trustzone' spec-variable enabled, and one without. If 'trustzone' is specified most platform resources (DDR-RAM, and most IRQs) are reserved for the Vm and not available to the secure Genode world.
43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
/*
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* \brief Connection to VM service
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* \author Stefan Kalkowski
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* \date 2012-10-02
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*/
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/*
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* Copyright (C) 2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__VM_SESSION__CONNECTION_H_
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#define _INCLUDE__VM_SESSION__CONNECTION_H_
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#include <vm_session/client.h>
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#include <cpu_session/cpu_session.h>
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#include <base/connection.h>
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namespace Genode {
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struct Vm_connection : Connection<Vm_session>, Vm_session_client
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{
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/**
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* Constructor
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*
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* \param label initial session label
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* \param priority designated priority of the VM
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* \param affinity which physical CPU the VM should run on top of
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*/
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Vm_connection(const char *label = "",
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long priority = Cpu_session::DEFAULT_PRIORITY,
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unsigned long affinity = 0)
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: Connection<Vm_session>(
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session("priority=0x%lx, affinity=0x%lx, ram_quota=16K, label=\"%s\"",
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priority, affinity, label)),
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Vm_session_client(cap()) { }
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};
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}
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#endif /* _INCLUDE__VM_SESSION__CONNECTION_H_ */
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