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/*
* Copyright (c) 2004-2005 The Regents of The University of Michigan
* 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.
*/
/**
* @file
* Modifications for the FreeBSD kernel.
* Based on kern/linux/linux_system.cc.
* Currently only used to skip DELAY function.
*
*/
#include "base/loader/symtab.hh"
#include "cpu/exec_context.hh"
#include "kern/freebsd/freebsd_system.hh"
#include "mem/functional/memory_control.hh"
#include "mem/functional/physical.hh"
#include "sim/builder.hh"
#include "targetarch/vtophys.hh"
using namespace std;
FreebsdSystem::FreebsdSystem(Params *p)
: System(p)
{
Addr addr = 0;
/**
* Any time DELAY is called just skip the function.
* Replace calibrate_clocks with function below.
*/
skipDelayEvent = new SkipFuncEvent(&pcEventQueue, "DELAY");
if (kernelSymtab->findAddress("DELAY", addr))
skipDelayEvent->schedule(addr+sizeof(MachInst));
skipCalibrateClocks = new FreebsdSkipCalibrateClocksEvent(&pcEventQueue, "calibrate_clocks");
if (kernelSymtab->findAddress("calibrate_clocks", addr))
skipCalibrateClocks->schedule(addr + sizeof(MachInst) * 2);
}
FreebsdSystem::~FreebsdSystem()
{
delete skipDelayEvent;
delete skipCalibrateClocks;
}
void
FreebsdSystem::doCalibrateClocks(ExecContext *xc)
{
Addr ppc_vaddr = 0;
Addr timer_vaddr = 0;
Addr ppc_paddr = 0;
Addr timer_paddr = 0;
ppc_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg1];
timer_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg2];
ppc_paddr = vtophys(physmem, ppc_vaddr);
timer_paddr = vtophys(physmem, timer_vaddr);
uint8_t *ppc = physmem->dma_addr(ppc_paddr, sizeof(uint32_t));
uint8_t *timer = physmem->dma_addr(timer_paddr, sizeof(uint32_t));
*(uint32_t *)ppc = htoa((uint32_t)2000000000);
*(uint32_t *)timer = htoa((uint32_t)1193180);
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem)
Param<Tick> boot_cpu_frequency;
SimObjectParam<MemoryController *> memctrl;
SimObjectParam<PhysicalMemory *> physmem;
Param<string> kernel;
Param<string> console;
Param<string> pal;
Param<string> boot_osflags;
Param<string> readfile;
Param<unsigned int> init_param;
Param<uint64_t> system_type;
Param<uint64_t> system_rev;
Param<bool> bin;
VectorParam<string> binned_fns;
Param<bool> bin_int;
END_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem)
BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdSystem)
INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"),
INIT_PARAM(memctrl, "memory controller"),
INIT_PARAM(physmem, "phsyical memory"),
INIT_PARAM(kernel, "file that contains the kernel code"),
INIT_PARAM(console, "file that contains the console code"),
INIT_PARAM(pal, "file that contains palcode"),
INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
"a"),
INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10),
INIT_PARAM_DFLT(bin, "is this system to be binned", false),
INIT_PARAM(binned_fns, "functions to be broken down and binned"),
INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true)
END_INIT_SIM_OBJECT_PARAMS(FreebsdSystem)
CREATE_SIM_OBJECT(FreebsdSystem)
{
System::Params *p = new System::Params;
p->name = getInstanceName();
p->boot_cpu_frequency = boot_cpu_frequency;
p->memctrl = memctrl;
p->physmem = physmem;
p->kernel_path = kernel;
p->console_path = console;
p->palcode = pal;
p->boot_osflags = boot_osflags;
p->init_param = init_param;
p->readfile = readfile;
p->system_type = system_type;
p->system_rev = system_rev;
p->bin = bin;
p->binned_fns = binned_fns;
p->bin_int = bin_int;
return new FreebsdSystem(p);
}
REGISTER_SIM_OBJECT("FreebsdSystem", FreebsdSystem)
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