system.cc

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/*
 * Copyright (c) 2018 TU Dresden
 * All rights reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Robert Scheffel
 */

#include "arch/riscv/bare_metal/system.hh"

#include "arch/riscv/faults.hh"
#include "base/loader/object_file.hh"

BareMetalRiscvSystem::BareMetalRiscvSystem(Params *p)
    : RiscvSystem(p),
      bootloader(createObjectFile(p->bootloader))
{
    if (bootloader == NULL) {
         fatal("Could not load bootloader file %s", p->bootloader);
    }

    _resetVect = bootloader->entryPoint();
}

BareMetalRiscvSystem::~BareMetalRiscvSystem()
{
    delete bootloader;
}

void
BareMetalRiscvSystem::initState()
{
    // Call the initialisation of the super class
    RiscvSystem::initState();

    for (auto *tc: threadContexts) {
        RiscvISA::Reset().invoke(tc);
        tc->activate();
    }

    // load program sections into memory
    if (!bootloader->buildImage().write(physProxy)) {
        warn("could not load sections to memory");
    }
}

BareMetalRiscvSystem *
BareMetalRiscvSystemParams::create()
{
    return new BareMetalRiscvSystem(this);
}