base/loader/symtab.cc: base/loader/symtab.hh: Get rid of old unused calls. cpu/simple_cpu/simple_cpu.hh: No need to include base/loader/symtab.hh kern/linux/linux_system.cc: kern/tru64/tru64_system.cc: Include base/loader/symtab.hh (since it's no longer included in system.hh) sim/system.hh: Replace include of base/loader/symtab.hh with forward class decl. --HG-- extra : convert_revision : 3a778c2f409ec94e3b00eaa9b3859943cb39918c
271 lines
9.6 KiB
C++
271 lines
9.6 KiB
C++
/*
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* Copyright (c) 2004 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* This code loads the linux kernel, console, pal and patches certain
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* functions. The symbol tables are loaded so that traces can show
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* the executing function and we can skip functions. Various delay
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* loops are skipped and their final values manually computed to speed
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* up boot time.
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*/
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#include "base/loader/symtab.hh"
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#include "base/trace.hh"
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#include "cpu/exec_context.hh"
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#include "cpu/base_cpu.hh"
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#include "kern/linux/linux_events.hh"
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#include "kern/linux/linux_system.hh"
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#include "kern/system_events.hh"
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#include "mem/functional_mem/memory_control.hh"
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#include "mem/functional_mem/physical_memory.hh"
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#include "sim/builder.hh"
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#include "dev/platform.hh"
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#include "targetarch/isa_traits.hh"
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#include "targetarch/vtophys.hh"
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#include "sim/debug.hh"
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using namespace std;
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LinuxSystem::LinuxSystem(Params *p)
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: System(p)
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{
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Addr addr = 0;
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/**
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* find the address of the est_cycle_freq variable and insert it
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* so we don't through the lengthly process of trying to
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* calculated it by using the PIT, RTC, etc.
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*/
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if (kernelSymtab->findAddress("est_cycle_freq", addr)) {
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Addr paddr = vtophys(physmem, addr);
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uint8_t *est_cycle_frequency =
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physmem->dma_addr(paddr, sizeof(uint64_t));
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if (est_cycle_frequency)
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*(uint64_t *)est_cycle_frequency = htoa(ticksPerSecond);
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}
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/**
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* Since we aren't using a bootloader, we have to copy the kernel arguments
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* directly into the kernels memory.
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*/
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{
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Addr paddr = vtophys(physmem, PARAM_ADDR);
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char *commandline = (char*)physmem->dma_addr(paddr, sizeof(uint64_t));
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if (commandline)
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strcpy(commandline, params->boot_osflags.c_str());
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}
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/**
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* EV5 only supports 127 ASNs so we are going to tell the kernel that the
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* paritiuclar EV6 we have only supports 127 asns.
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* @todo At some point we should change ev5.hh and the palcode to support
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* 255 ASNs.
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*/
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if (kernelSymtab->findAddress("dp264_mv", addr)) {
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Addr paddr = vtophys(physmem, addr);
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char *dp264_mv = (char *)physmem->dma_addr(paddr, sizeof(uint64_t));
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if (dp264_mv) {
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*(uint32_t*)(dp264_mv+0x18) = htoa((uint32_t)127);
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} else
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panic("could not translate dp264_mv addr\n");
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} else
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panic("could not find dp264_mv\n");
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#ifdef DEBUG
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kernelPanicEvent = new BreakPCEvent(&pcEventQueue, "kernel panic");
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if (kernelSymtab->findAddress("panic", addr))
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kernelPanicEvent->schedule(addr);
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else
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panic("could not find kernel symbol \'panic\'");
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#endif
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/**
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* Any time ide_delay_50ms, calibarte_delay or
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* determine_cpu_caches is called just skip the
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* function. Currently determine_cpu_caches only is used put
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* information in proc, however if that changes in the future we
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* will have to fill in the cache size variables appropriately.
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*/
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skipIdeDelay50msEvent = new SkipFuncEvent(&pcEventQueue, "ide_delay_50ms");
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if (kernelSymtab->findAddress("ide_delay_50ms", addr))
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skipIdeDelay50msEvent->schedule(addr+sizeof(MachInst));
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skipDelayLoopEvent = new LinuxSkipDelayLoopEvent(&pcEventQueue,
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"calibrate_delay");
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if (kernelSymtab->findAddress("calibrate_delay", addr))
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skipDelayLoopEvent->schedule(addr+sizeof(MachInst));
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skipCacheProbeEvent = new SkipFuncEvent(&pcEventQueue,
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"determine_cpu_caches");
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if (kernelSymtab->findAddress("determine_cpu_caches", addr))
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skipCacheProbeEvent->schedule(addr+sizeof(MachInst));
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debugPrintkEvent = new DebugPrintkEvent(&pcEventQueue, "dprintk");
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if (kernelSymtab->findAddress("dprintk", addr))
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debugPrintkEvent->schedule(addr+8);
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idleStartEvent = new IdleStartEvent(&pcEventQueue, "cpu_idle", this);
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if (kernelSymtab->findAddress("cpu_idle", addr))
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idleStartEvent->schedule(addr);
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printThreadEvent = new PrintThreadInfo(&pcEventQueue, "threadinfo");
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if (kernelSymtab->findAddress("alpha_switch_to", addr) && DTRACE(Thread))
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printThreadEvent->schedule(addr + sizeof(MachInst) * 6);
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intStartEvent = new InterruptStartEvent(&pcEventQueue, "intStartEvent");
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if (params->bin_int) {
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if (palSymtab->findAddress("sys_int_21", addr))
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intStartEvent->schedule(addr + sizeof(MachInst) * 2);
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else
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panic("could not find symbol: sys_int_21\n");
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intEndEvent = new InterruptEndEvent(&pcEventQueue, "intEndEvent");
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if (palSymtab->findAddress("rti_to_kern", addr))
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intEndEvent->schedule(addr) ;
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else
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panic("could not find symbol: rti_to_kern\n");
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intEndEvent2 = new InterruptEndEvent(&pcEventQueue, "intEndEvent2");
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if (palSymtab->findAddress("rti_to_user", addr))
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intEndEvent2->schedule(addr);
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else
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panic("could not find symbol: rti_to_user\n");
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intEndEvent3 = new InterruptEndEvent(&pcEventQueue, "intEndEvent3");
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if (kernelSymtab->findAddress("do_softirq", addr))
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intEndEvent3->schedule(addr + sizeof(MachInst) * 2);
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else
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panic("could not find symbol: do_softirq\n");
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}
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}
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LinuxSystem::~LinuxSystem()
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{
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#ifdef DEBUG
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delete kernelPanicEvent;
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#endif
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delete skipIdeDelay50msEvent;
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delete skipDelayLoopEvent;
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delete skipCacheProbeEvent;
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delete debugPrintkEvent;
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delete idleStartEvent;
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delete printThreadEvent;
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delete intStartEvent;
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delete intEndEvent;
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delete intEndEvent2;
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}
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void
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LinuxSystem::setDelayLoop(ExecContext *xc)
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{
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Addr addr = 0;
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if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
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Addr paddr = vtophys(physmem, addr);
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uint8_t *loops_per_jiffy =
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physmem->dma_addr(paddr, sizeof(uint32_t));
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Tick cpuFreq = xc->cpu->getFreq();
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Tick intrFreq = platform->interrupt_frequency;
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*(uint32_t *)loops_per_jiffy =
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(uint32_t)((cpuFreq / intrFreq) * 0.9988);
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}
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}
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxSystem)
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SimObjectParam<MemoryController *> mem_ctl;
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SimObjectParam<PhysicalMemory *> physmem;
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Param<string> kernel_code;
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Param<string> console_code;
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Param<string> pal_code;
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Param<string> boot_osflags;
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Param<string> readfile;
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Param<unsigned int> init_param;
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Param<uint64_t> system_type;
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Param<uint64_t> system_rev;
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Param<bool> bin;
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VectorParam<string> binned_fns;
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Param<bool> bin_int;
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END_DECLARE_SIM_OBJECT_PARAMS(LinuxSystem)
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BEGIN_INIT_SIM_OBJECT_PARAMS(LinuxSystem)
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INIT_PARAM(mem_ctl, "memory controller"),
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INIT_PARAM(physmem, "phsyical memory"),
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INIT_PARAM(kernel_code, "file that contains the kernel code"),
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INIT_PARAM(console_code, "file that contains the console code"),
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INIT_PARAM(pal_code, "file that contains palcode"),
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INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
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"a"),
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INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
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INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
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INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
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INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10),
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INIT_PARAM_DFLT(bin, "is this system to be binned", false),
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INIT_PARAM(binned_fns, "functions to be broken down and binned"),
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INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true)
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END_INIT_SIM_OBJECT_PARAMS(LinuxSystem)
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CREATE_SIM_OBJECT(LinuxSystem)
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{
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System::Params *p = new System::Params;
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p->name = getInstanceName();
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p->memctrl = mem_ctl;
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p->physmem = physmem;
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p->kernel_path = kernel_code;
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p->console_path = console_code;
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p->palcode = pal_code;
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p->boot_osflags = boot_osflags;
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p->init_param = init_param;
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p->readfile = readfile;
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p->system_type = system_type;
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p->system_rev = system_rev;
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p->bin = bin;
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p->binned_fns = binned_fns;
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p->bin_int = bin_int;
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return new LinuxSystem(p);
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}
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REGISTER_SIM_OBJECT("LinuxSystem", LinuxSystem)
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