gem5/arch/alpha/linux/system.cc
Ali Saidi bb80f71f21 fixes for new memory system
SConscript:
    comment out most devices
    add vport.cc
arch/alpha/arguments.cc:
arch/alpha/arguments.hh:
    push in alpha name space
    fix for new memory system
arch/alpha/faults.cc:
arch/alpha/faults.hh:
    Added an unimplemented fault that can be returned if a certain
    function isn't implemented
arch/alpha/freebsd/system.cc:
arch/alpha/linux/system.cc:
arch/alpha/stacktrace.cc:
arch/alpha/system.cc:
arch/alpha/tlb.hh:
arch/alpha/tru64/system.cc:
    fixed for new memory system
arch/alpha/tlb.cc:
    fixed for new memory system
    removed code that seems to have no purpose
arch/alpha/vtophys.cc:
arch/alpha/vtophys.hh:
    fixed for new memory system
    put in namespace AlphaISA
base/remote_gdb.cc:
    fix for new memory system
cpu/cpu_exec_context.cc:
cpu/cpu_exec_context.hh:
cpu/exec_context.hh:
    create two ports one of physical accesses and one for superpage accesses
    Add functions getVirtPort() getPhysPort() delVirtPort(). To get statically
    allocated physical or virtual ports or if an execcontext is passed in
    get a dynamically allocated virtual port
dev/alpha_console.cc:
dev/alpha_console.hh:
    Redo for new memory system
dev/io_device.cc:
dev/io_device.hh:
    new I/O devices for new memory system
kern/linux/events.cc:
kern/linux/printk.cc:
kern/linux/printk.hh:
kern/tru64/dump_mbuf.hh:
kern/tru64/printf.cc:
kern/tru64/printf.hh:
    Arguments now in namespaces
kern/tru64/tru64_events.cc:
mem/bus.cc:
    fix for new memory syste
mem/physical.hh:
    new addressranges function
    getPort should be public
mem/port.hh:
    Add write/read methods to functional port
    update getDeviceAddrRanges to have a list of both snoops and response lists
sim/pseudo_inst.cc:
sim/system.cc:
sim/system.hh:
    Update for new mem system
sim/vptr.hh:
    comment out code and replace with panics
    This will need to be fixed at some point, but it's not easy.

--HG--
extra : convert_revision : 41f41f422cfbab3751284d55cccb6ea64a7956e2
2006-04-06 00:51:46 -04:00

265 lines
8.9 KiB
C++

/*
* 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
* This code loads the linux kernel, console, pal and patches certain
* functions. The symbol tables are loaded so that traces can show
* the executing function and we can skip functions. Various delay
* loops are skipped and their final values manually computed to speed
* up boot time.
*/
#include "arch/arguments.hh"
#include "arch/vtophys.hh"
#include "arch/alpha/linux/system.hh"
#include "arch/alpha/linux/threadinfo.hh"
#include "arch/alpha/system.hh"
#include "base/loader/symtab.hh"
#include "cpu/exec_context.hh"
#include "cpu/base.hh"
#include "dev/platform.hh"
#include "kern/linux/printk.hh"
#include "kern/linux/events.hh"
#include "mem/physical.hh"
#include "mem/port.hh"
#include "sim/builder.hh"
#include "sim/byteswap.hh"
using namespace std;
using namespace AlphaISA;
using namespace Linux;
LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
: AlphaSystem(p)
{
Addr addr = 0;
/**
* The symbol swapper_pg_dir marks the beginning of the kernel and
* the location of bootloader passed arguments
*/
if (!kernelSymtab->findAddress("swapper_pg_dir", KernelStart)) {
panic("Could not determine start location of kernel");
}
/**
* Since we aren't using a bootloader, we have to copy the
* kernel arguments directly into the kernel's memory.
*/
virtPort.writeBlob(CommandLine(), (uint8_t*)params()->boot_osflags.c_str(),
CommandLineSize);
/**
* find the address of the est_cycle_freq variable and insert it
* so we don't through the lengthly process of trying to
* calculated it by using the PIT, RTC, etc.
*/
if (kernelSymtab->findAddress("est_cycle_freq", addr))
virtPort.write(addr, (uint64_t)(Clock::Frequency /
p->boot_cpu_frequency));
/**
* EV5 only supports 127 ASNs so we are going to tell the kernel that the
* paritiuclar EV6 we have only supports 127 asns.
* @todo At some point we should change ev5.hh and the palcode to support
* 255 ASNs.
*/
if (kernelSymtab->findAddress("dp264_mv", addr))
virtPort.write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127));
else
panic("could not find dp264_mv\n");
#ifndef NDEBUG
kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic");
if (!kernelPanicEvent)
panic("could not find kernel symbol \'panic\'");
#if 0
kernelDieEvent = addKernelFuncEvent<BreakPCEvent>("die_if_kernel");
if (!kernelDieEvent)
panic("could not find kernel symbol \'die_if_kernel\'");
#endif
#endif
/**
* Any time ide_delay_50ms, calibarte_delay or
* determine_cpu_caches is called just skip the
* function. Currently determine_cpu_caches only is used put
* information in proc, however if that changes in the future we
* will have to fill in the cache size variables appropriately.
*/
skipIdeDelay50msEvent =
addKernelFuncEvent<SkipFuncEvent>("ide_delay_50ms");
skipDelayLoopEvent =
addKernelFuncEvent<SkipDelayLoopEvent>("calibrate_delay");
skipCacheProbeEvent =
addKernelFuncEvent<SkipFuncEvent>("determine_cpu_caches");
debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
idleStartEvent = addKernelFuncEvent<IdleStartEvent>("cpu_idle");
if (kernelSymtab->findAddress("alpha_switch_to", addr) && DTRACE(Thread)) {
printThreadEvent = new PrintThreadInfo(&pcEventQueue, "threadinfo",
addr + sizeof(MachInst) * 6);
} else {
printThreadEvent = NULL;
}
if (params()->bin_int) {
intStartEvent = addPalFuncEvent<InterruptStartEvent>("sys_int_21");
if (!intStartEvent)
panic("could not find symbol: sys_int_21\n");
intEndEvent = addPalFuncEvent<InterruptEndEvent>("rti_to_kern");
if (!intEndEvent)
panic("could not find symbol: rti_to_kern\n");
intEndEvent2 = addPalFuncEvent<InterruptEndEvent>("rti_to_user");
if (!intEndEvent2)
panic("could not find symbol: rti_to_user\n");
intEndEvent3 = addKernelFuncEvent<InterruptEndEvent>("do_softirq");
if (!intEndEvent3)
panic("could not find symbol: do_softirq\n");
}
}
LinuxAlphaSystem::~LinuxAlphaSystem()
{
#ifndef NDEBUG
delete kernelPanicEvent;
#endif
delete skipIdeDelay50msEvent;
delete skipDelayLoopEvent;
delete skipCacheProbeEvent;
delete debugPrintkEvent;
delete idleStartEvent;
delete printThreadEvent;
delete intStartEvent;
delete intEndEvent;
delete intEndEvent2;
}
void
LinuxAlphaSystem::setDelayLoop(ExecContext *xc)
{
Addr addr = 0;
if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
Tick cpuFreq = xc->getCpuPtr()->frequency();
Tick intrFreq = platform->intrFrequency();
xc->getVirtPort(xc)->write(addr,
(uint32_t)((cpuFreq / intrFreq) * 0.9988));
}
}
void
LinuxAlphaSystem::SkipDelayLoopEvent::process(ExecContext *xc)
{
SkipFuncEvent::process(xc);
// calculate and set loops_per_jiffy
((LinuxAlphaSystem *)xc->getSystemPtr())->setDelayLoop(xc);
}
void
LinuxAlphaSystem::PrintThreadInfo::process(ExecContext *xc)
{
Linux::ThreadInfo ti(xc);
DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n",
ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart());
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
Param<Tick> boot_cpu_frequency;
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(LinuxAlphaSystem)
BEGIN_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"),
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(LinuxAlphaSystem)
CREATE_SIM_OBJECT(LinuxAlphaSystem)
{
AlphaSystem::Params *p = new AlphaSystem::Params;
p->name = getInstanceName();
p->boot_cpu_frequency = boot_cpu_frequency;
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 LinuxAlphaSystem(p);
}
REGISTER_SIM_OBJECT("LinuxAlphaSystem", LinuxAlphaSystem)