system.cc revision 2902
1451SN/A/* 21762SN/A * Copyright (c) 2004-2005 The Regents of The University of Michigan 3451SN/A * All rights reserved. 4451SN/A * 5451SN/A * Redistribution and use in source and binary forms, with or without 6451SN/A * modification, are permitted provided that the following conditions are 7451SN/A * met: redistributions of source code must retain the above copyright 8451SN/A * notice, this list of conditions and the following disclaimer; 9451SN/A * redistributions in binary form must reproduce the above copyright 10451SN/A * notice, this list of conditions and the following disclaimer in the 11451SN/A * documentation and/or other materials provided with the distribution; 12451SN/A * neither the name of the copyright holders nor the names of its 13451SN/A * contributors may be used to endorse or promote products derived from 14451SN/A * this software without specific prior written permission. 15451SN/A * 16451SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17451SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18451SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19451SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20451SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21451SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22451SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23451SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24451SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25451SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26451SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Ali Saidi 292665Ssaidi@eecs.umich.edu * Lisa Hsu 302665Ssaidi@eecs.umich.edu * Nathan Binkert 312665Ssaidi@eecs.umich.edu * Steve Reinhardt 32451SN/A */ 33451SN/A 34885SN/A/** 35885SN/A * @file 361040SN/A * This code loads the linux kernel, console, pal and patches certain 371040SN/A * functions. The symbol tables are loaded so that traces can show 381040SN/A * the executing function and we can skip functions. Various delay 391040SN/A * loops are skipped and their final values manually computed to speed 401040SN/A * up boot time. 41885SN/A */ 42885SN/A 432212SN/A#include "arch/arguments.hh" 442212SN/A#include "arch/vtophys.hh" 452212SN/A#include "arch/alpha/linux/system.hh" 462212SN/A#include "arch/alpha/linux/threadinfo.hh" 472158SN/A#include "arch/alpha/system.hh" 481180SN/A#include "base/loader/symtab.hh" 492680Sktlim@umich.edu#include "cpu/thread_context.hh" 501717SN/A#include "cpu/base.hh" 512212SN/A#include "dev/platform.hh" 521885SN/A#include "kern/linux/printk.hh" 532212SN/A#include "kern/linux/events.hh" 542521SN/A#include "mem/physical.hh" 552521SN/A#include "mem/port.hh" 56451SN/A#include "sim/builder.hh" 572036SN/A#include "sim/byteswap.hh" 58451SN/A 59451SN/Ausing namespace std; 602212SN/Ausing namespace AlphaISA; 612212SN/Ausing namespace Linux; 62451SN/A 632212SN/ALinuxAlphaSystem::LinuxAlphaSystem(Params *p) 642158SN/A : AlphaSystem(p) 65451SN/A{ 66451SN/A Addr addr = 0; 671855SN/A 681855SN/A /** 691855SN/A * The symbol swapper_pg_dir marks the beginning of the kernel and 701855SN/A * the location of bootloader passed arguments 711855SN/A */ 721855SN/A if (!kernelSymtab->findAddress("swapper_pg_dir", KernelStart)) { 731855SN/A panic("Could not determine start location of kernel"); 741855SN/A } 751855SN/A 761855SN/A /** 771855SN/A * Since we aren't using a bootloader, we have to copy the 781855SN/A * kernel arguments directly into the kernel's memory. 791855SN/A */ 802521SN/A virtPort.writeBlob(CommandLine(), (uint8_t*)params()->boot_osflags.c_str(), 812548SN/A params()->boot_osflags.length()+1); 82836SN/A 83885SN/A /** 841070SN/A * find the address of the est_cycle_freq variable and insert it 851070SN/A * so we don't through the lengthly process of trying to 861070SN/A * calculated it by using the PIT, RTC, etc. 87885SN/A */ 882521SN/A if (kernelSymtab->findAddress("est_cycle_freq", addr)) 892521SN/A virtPort.write(addr, (uint64_t)(Clock::Frequency / 902521SN/A p->boot_cpu_frequency)); 91451SN/A 92836SN/A 93885SN/A /** 94943SN/A * EV5 only supports 127 ASNs so we are going to tell the kernel that the 95943SN/A * paritiuclar EV6 we have only supports 127 asns. 96943SN/A * @todo At some point we should change ev5.hh and the palcode to support 97943SN/A * 255 ASNs. 98943SN/A */ 992521SN/A if (kernelSymtab->findAddress("dp264_mv", addr)) 1002521SN/A virtPort.write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127)); 1012521SN/A else 1021070SN/A panic("could not find dp264_mv\n"); 103943SN/A 1041492SN/A#ifndef NDEBUG 1051885SN/A kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic"); 1061885SN/A if (!kernelPanicEvent) 107451SN/A panic("could not find kernel symbol \'panic\'"); 1081885SN/A 1091646SN/A#if 0 1101885SN/A kernelDieEvent = addKernelFuncEvent<BreakPCEvent>("die_if_kernel"); 1111885SN/A if (!kernelDieEvent) 1121492SN/A panic("could not find kernel symbol \'die_if_kernel\'"); 1131646SN/A#endif 1141492SN/A 115860SN/A#endif 116451SN/A 117885SN/A /** 1181895SN/A * Any time ide_delay_50ms, calibarte_delay or 1191070SN/A * determine_cpu_caches is called just skip the 1201070SN/A * function. Currently determine_cpu_caches only is used put 1211070SN/A * information in proc, however if that changes in the future we 1221070SN/A * will have to fill in the cache size variables appropriately. 123885SN/A */ 124848SN/A 1251885SN/A skipIdeDelay50msEvent = 1261885SN/A addKernelFuncEvent<SkipFuncEvent>("ide_delay_50ms"); 1271885SN/A skipDelayLoopEvent = 1281885SN/A addKernelFuncEvent<SkipDelayLoopEvent>("calibrate_delay"); 1291885SN/A skipCacheProbeEvent = 1301885SN/A addKernelFuncEvent<SkipFuncEvent>("determine_cpu_caches"); 1311885SN/A debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk"); 1321885SN/A idleStartEvent = addKernelFuncEvent<IdleStartEvent>("cpu_idle"); 1331885SN/A 1341885SN/A if (kernelSymtab->findAddress("alpha_switch_to", addr) && DTRACE(Thread)) { 1351885SN/A printThreadEvent = new PrintThreadInfo(&pcEventQueue, "threadinfo", 1361885SN/A addr + sizeof(MachInst) * 6); 1371885SN/A } else { 1381885SN/A printThreadEvent = NULL; 1391657SN/A } 140451SN/A} 141451SN/A 1422212SN/ALinuxAlphaSystem::~LinuxAlphaSystem() 143451SN/A{ 1441492SN/A#ifndef NDEBUG 145451SN/A delete kernelPanicEvent; 1461070SN/A#endif 147869SN/A delete skipIdeDelay50msEvent; 148869SN/A delete skipDelayLoopEvent; 149869SN/A delete skipCacheProbeEvent; 1501070SN/A delete debugPrintkEvent; 1511070SN/A delete idleStartEvent; 1521082SN/A delete printThreadEvent; 153451SN/A} 154451SN/A 155882SN/A 156803SN/Avoid 1572680Sktlim@umich.eduLinuxAlphaSystem::setDelayLoop(ThreadContext *tc) 158803SN/A{ 159803SN/A Addr addr = 0; 160803SN/A if (kernelSymtab->findAddress("loops_per_jiffy", addr)) { 1612680Sktlim@umich.edu Tick cpuFreq = tc->getCpuPtr()->frequency(); 1621634SN/A Tick intrFreq = platform->intrFrequency(); 1632684Ssaidi@eecs.umich.edu VirtualPort *vp; 1642684Ssaidi@eecs.umich.edu 1652684Ssaidi@eecs.umich.edu vp = tc->getVirtPort(); 1662684Ssaidi@eecs.umich.edu vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988)); 1672684Ssaidi@eecs.umich.edu tc->delVirtPort(vp); 168803SN/A } 169803SN/A} 170803SN/A 1712212SN/A 1721885SN/Avoid 1732680Sktlim@umich.eduLinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc) 1741885SN/A{ 1752680Sktlim@umich.edu SkipFuncEvent::process(tc); 1761885SN/A // calculate and set loops_per_jiffy 1772680Sktlim@umich.edu ((LinuxAlphaSystem *)tc->getSystemPtr())->setDelayLoop(tc); 1781885SN/A} 1791885SN/A 1801885SN/Avoid 1812680Sktlim@umich.eduLinuxAlphaSystem::PrintThreadInfo::process(ThreadContext *tc) 1821885SN/A{ 1832680Sktlim@umich.edu Linux::ThreadInfo ti(tc); 1841885SN/A 1851885SN/A DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n", 1861885SN/A ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart()); 1871885SN/A} 1881885SN/A 1891885SN/A 1902212SN/ABEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem) 191451SN/A 1921634SN/A Param<Tick> boot_cpu_frequency; 193451SN/A SimObjectParam<PhysicalMemory *> physmem; 1942902Ssaidi@eecs.umich.edu SimpleEnumParam<System::MemoryMode> mem_mode; 195451SN/A 1961310SN/A Param<string> kernel; 1971310SN/A Param<string> console; 1981310SN/A Param<string> pal; 1991070SN/A 200451SN/A Param<string> boot_osflags; 2011070SN/A Param<string> readfile; 2021070SN/A Param<unsigned int> init_param; 2031070SN/A 2041070SN/A Param<uint64_t> system_type; 2051070SN/A Param<uint64_t> system_rev; 2061070SN/A 2072212SN/AEND_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem) 208451SN/A 2092212SN/ABEGIN_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem) 210451SN/A 2111634SN/A INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), 212451SN/A INIT_PARAM(physmem, "phsyical memory"), 2132902Ssaidi@eecs.umich.edu INIT_ENUM_PARAM(mem_mode, "Memory Mode, (1=atomic, 2=timing)", 2142902Ssaidi@eecs.umich.edu System::MemoryModeStrings), 2151310SN/A INIT_PARAM(kernel, "file that contains the kernel code"), 2161310SN/A INIT_PARAM(console, "file that contains the console code"), 2171310SN/A INIT_PARAM(pal, "file that contains palcode"), 218451SN/A INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", 2191070SN/A "a"), 2201070SN/A INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), 2211070SN/A INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), 2221070SN/A INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), 2232343SN/A INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10) 224451SN/A 2252212SN/AEND_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem) 226451SN/A 2272212SN/ACREATE_SIM_OBJECT(LinuxAlphaSystem) 228451SN/A{ 2292158SN/A AlphaSystem::Params *p = new AlphaSystem::Params; 2301070SN/A p->name = getInstanceName(); 2311634SN/A p->boot_cpu_frequency = boot_cpu_frequency; 2321070SN/A p->physmem = physmem; 2332902Ssaidi@eecs.umich.edu p->mem_mode = mem_mode; 2341310SN/A p->kernel_path = kernel; 2351310SN/A p->console_path = console; 2361310SN/A p->palcode = pal; 2371070SN/A p->boot_osflags = boot_osflags; 2381070SN/A p->init_param = init_param; 2391070SN/A p->readfile = readfile; 2401070SN/A p->system_type = system_type; 2411070SN/A p->system_rev = system_rev; 2422212SN/A return new LinuxAlphaSystem(p); 243451SN/A} 244451SN/A 2452212SN/AREGISTER_SIM_OBJECT("LinuxAlphaSystem", LinuxAlphaSystem) 2461070SN/A 247