xref: /gem5/src/mem/secure_port_proxy.hh

/*
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * Authors: Andreas Hansson
 */

/**
 * @file
 * PortProxy Object Declaration.
 *
 * Port proxies are used when non-structural entities need access to
 * the memory system (or structural entities that want to peak into
 * the memory system without making a real memory access).
 *
 * Proxy objects replace the previous FunctionalPort, TranslatingPort
 * and VirtualPort objects, which provided the same functionality as
 * the proxies, but were instances of ports not corresponding to real
 * structural ports of the simulated system. Via the port proxies all
 * the accesses go through an actual port (either the system port,
 * e.g. for processes or initialisation, or a the data port of the
 * CPU, e.g. for threads) and thus are transparent to a potentially
 * distributed memory and automatically adhere to the memory map of
 * the system.
 */

#ifndef __MEM_SECURE_PORT_PROXY_HH__
#define __MEM_SECURE_PORT_PROXY_HH__

#include "mem/port_proxy.hh"

/**
 * This object is a proxy for a structural port, to be used for debug
 * accesses to secure memory.
 *
 * The addresses are interpreted as physical addresses to secure memory.
 */
class SecurePortProxy : public PortProxy
{
  public:
    using PortProxy::PortProxy;

    bool tryReadBlob(Addr addr, void *p, int size) const override;
    bool tryWriteBlob(Addr addr, const void *p, int size) const override;
    bool tryMemsetBlob(Addr addr, uint8_t val, int size) const override;
};

#endif // __MEM_SECURE_PORT_PROXY_HH__