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/*
* QEMU ARM CPU -- interface for the Arm v8M IDAU
*
* Copyright (c) 2018 Linaro Ltd
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see
* <http://www.gnu.org/licenses/gpl-2.0.html>
*
* In the v8M architecture, the IDAU is a small piece of hardware
* typically implemented in the SoC which provides board or SoC
* specific security attribution information for each address that
* the CPU performs MPU/SAU checks on. For QEMU, we model this with a
* QOM interface which is implemented by the board or SoC object and
* connected to the CPU using a link property.
*/
#ifndef TARGET_ARM_IDAU_H
#define TARGET_ARM_IDAU_H
#include "qom/object.h"
#define TYPE_IDAU_INTERFACE "idau-interface"
#define IDAU_INTERFACE(obj) \
INTERFACE_CHECK(IDAUInterface, (obj), TYPE_IDAU_INTERFACE)
typedef struct IDAUInterfaceClass IDAUInterfaceClass;
#define IDAU_INTERFACE_CLASS(class) \
OBJECT_CLASS_CHECK(IDAUInterfaceClass, (class), TYPE_IDAU_INTERFACE)
#define IDAU_INTERFACE_GET_CLASS(obj) \
OBJECT_GET_CLASS(IDAUInterfaceClass, (obj), TYPE_IDAU_INTERFACE)
typedef struct IDAUInterface IDAUInterface;
#define IREGION_NOTVALID -1
struct IDAUInterfaceClass {
InterfaceClass parent;
/* Check the specified address and return the IDAU security information
* for it by filling in iregion, exempt, ns and nsc:
* iregion: IDAU region number, or IREGION_NOTVALID if not valid
* exempt: true if address is exempt from security attribution
* ns: true if the address is NonSecure
* nsc: true if the address is NonSecure-callable
*/
void (*check)(IDAUInterface *ii, uint32_t address, int *iregion,
bool *exempt, bool *ns, bool *nsc);
};
#endif
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