diff options
Diffstat (limited to 'kern/linux/linux_system.cc')
| -rw-r--r-- | kern/linux/linux_system.cc | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/kern/linux/linux_system.cc b/kern/linux/linux_system.cc new file mode 100644 index 000000000..0e0f141b6 --- /dev/null +++ b/kern/linux/linux_system.cc @@ -0,0 +1,395 @@ +/* + * Copyright (c) 2003 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. + */ + +#include "base/loader/aout_object.hh" +#include "base/loader/elf_object.hh" +#include "base/loader/object_file.hh" +#include "base/loader/symtab.hh" +#include "base/remote_gdb.hh" +#include "base/trace.hh" +#include "cpu/exec_context.hh" +#include "cpu/base_cpu.hh" +#include "kern/linux/linux_events.hh" +#include "kern/linux/linux_system.hh" +#include "mem/functional_mem/memory_control.hh" +#include "mem/functional_mem/physical_memory.hh" +#include "sim/builder.hh" +#include "dev/platform.hh" +#include "targetarch/isa_traits.hh" +#include "targetarch/vtophys.hh" + +extern SymbolTable *debugSymbolTable; + +//un-comment this to see the state of call stack when it changes. +//#define SW_DEBUG + +using namespace std; + +LinuxSystem::LinuxSystem(const string _name, const uint64_t _init_param, + MemoryController *_memCtrl, PhysicalMemory *_physmem, + const string &kernel_path, const string &console_path, + const string &palcode, const string &boot_osflags, + const string &bootloader_path, const bool _bin) + : System(_name, _init_param, _memCtrl, _physmem, _bin), bin(_bin) +{ + kernelSymtab = new SymbolTable; + consoleSymtab = new SymbolTable; + bootloaderSymtab = new SymbolTable; + + ObjectFile *kernel = createObjectFile(kernel_path); + if (kernel == NULL) + fatal("Could not load kernel file %s", kernel_path); + + ObjectFile *console = createObjectFile(console_path); + if (console == NULL) + fatal("Could not load console file %s", console_path); + + ObjectFile *bootloader = createObjectFile(bootloader_path); + if (bootloader == NULL) + fatal("Could not load bootloader file %s", bootloader_path); + + if (!kernel->loadGlobalSymbols(kernelSymtab)) + panic("could not load kernel symbols\n"); + debugSymbolTable = kernelSymtab; + + if (!kernel->loadLocalSymbols(kernelSymtab)) + panic("could not load kernel local symbols\n"); + + if (!console->loadGlobalSymbols(consoleSymtab)) + panic("could not load console symbols\n"); + + if (!bootloader->loadGlobalSymbols(bootloaderSymtab)) + panic("could not load bootloader symbols\n"); + + // Load pal file + ObjectFile *pal = createObjectFile(palcode); + if (pal == NULL) + fatal("Could not load PALcode file %s", palcode); + pal->loadSections(physmem, true); + + // Load console file + console->loadSections(physmem, true); + + // Load kernel file + kernel->loadSections(physmem, true); + kernelStart = kernel->textBase(); + kernelEnd = kernel->bssBase() + kernel->bssSize(); + /* FIXME: entrypoint not in kernel, but in bootloader, + variable should be re-named appropriately */ + kernelEntry = kernel->entryPoint(); + + + DPRINTF(Loader, "Kernel start = %#x\n" + "Kernel end = %#x\n" + "Kernel entry = %#x\n", + kernelStart, kernelEnd, kernelEntry); + + DPRINTF(Loader, "Kernel loaded...\n"); + + // Load bootloader file + bootloader->loadSections(physmem, true); + kernelEntry = bootloader->entryPoint(); + kernelStart = bootloader->textBase(); + DPRINTF(Loader, "Bootloader entry at %#x\n", kernelEntry); + +#ifdef DEBUG + kernelPanicEvent = new BreakPCEvent(&pcEventQueue, "kernel panic"); + consolePanicEvent = new BreakPCEvent(&pcEventQueue, "console panic"); +#endif + + badaddrEvent = new LinuxBadAddrEvent(&pcEventQueue, "badaddr"); + skipPowerStateEvent = new LinuxSkipFuncEvent(&pcEventQueue, + "tl_v48_capture_power_state"); + skipScavengeBootEvent = new LinuxSkipFuncEvent(&pcEventQueue, + "pmap_scavenge_boot"); + printfEvent = new LinuxPrintfEvent(&pcEventQueue, "printf"); + + skipIdeDelay50msEvent = new LinuxSkipIdeDelay50msEvent(&pcEventQueue, + "ide_delay_50ms"); + + skipDelayLoopEvent = new LinuxSkipDelayLoopEvent(&pcEventQueue, + "calibrate_delay"); + + skipCacheProbeEvent = new LinuxSkipFuncEvent(&pcEventQueue, "determine_cpu_caches"); + + /* debugPrintfEvent = new DebugPrintfEvent(&pcEventQueue, + "debug_printf", false); + debugPrintfrEvent = new DebugPrintfEvent(&pcEventQueue, + "debug_printfr", true); + dumpMbufEvent = new DumpMbufEvent(&pcEventQueue, "dump_mbuf"); +*/ + + Addr addr = 0; + + if (kernelSymtab->findAddress("est_cycle_freq", addr)) { + Addr paddr = vtophys(physmem, addr); + uint8_t *est_cycle_frequency = + physmem->dma_addr(paddr, sizeof(uint64_t)); + + if (est_cycle_frequency) + *(uint64_t *)est_cycle_frequency = ticksPerSecond; + } + + if (kernelSymtab->findAddress("aic7xxx_no_reset", addr)) { + Addr paddr = vtophys(physmem, addr); + uint8_t *aic7xxx_no_reset = + physmem->dma_addr(paddr, sizeof(uint32_t)); + + if (aic7xxx_no_reset) { + *(uint32_t *)aic7xxx_no_reset = 1; + } + } + + if (consoleSymtab->findAddress("env_booted_osflags", addr)) { + Addr paddr = vtophys(physmem, addr); + char *osflags = (char *)physmem->dma_addr(paddr, sizeof(uint32_t)); + + if (osflags) + strcpy(osflags, boot_osflags.c_str()); + } + + if (consoleSymtab->findAddress("xxm_rpb", addr)) { + Addr paddr = vtophys(physmem, addr); + char *hwprb = (char *)physmem->dma_addr(paddr, sizeof(uint64_t)); + + if (hwprb) { + *(uint64_t*)(hwprb+0x50) = 34; // Tsunami + *(uint64_t*)(hwprb+0x58) = (1<<10); + } + else + panic("could not translate hwprb addr to set system type/variation\n"); + + } else + panic("could not find hwprb to set system type/variation\n"); + +#ifdef DEBUG + if (kernelSymtab->findAddress("panic", addr)) + kernelPanicEvent->schedule(addr); + else + panic("could not find kernel symbol \'panic\'"); + + if (consoleSymtab->findAddress("panic", addr)) + consolePanicEvent->schedule(addr); +#endif + + if (kernelSymtab->findAddress("badaddr", addr)) + badaddrEvent->schedule(addr); + // else + //panic("could not find kernel symbol \'badaddr\'"); + + if (kernelSymtab->findAddress("tl_v48_capture_power_state", addr)) + skipPowerStateEvent->schedule(addr); + + if (kernelSymtab->findAddress("pmap_scavenge_boot", addr)) + skipScavengeBootEvent->schedule(addr); + + if (kernelSymtab->findAddress("ide_delay_50ms", addr)) + skipIdeDelay50msEvent->schedule(addr+8); + + if (kernelSymtab->findAddress("calibrate_delay", addr)) + skipDelayLoopEvent->schedule(addr+8); + + if (kernelSymtab->findAddress("determine_cpu_caches", addr)) + skipCacheProbeEvent->schedule(addr+8); + +#if TRACING_ON + if (kernelSymtab->findAddress("printk", addr)) + printfEvent->schedule(addr); + + if (kernelSymtab->findAddress("m5printf", addr)) + debugPrintfEvent->schedule(addr); + + if (kernelSymtab->findAddress("m5printfr", addr)) + debugPrintfrEvent->schedule(addr); + + if (kernelSymtab->findAddress("m5_dump_mbuf", addr)) + dumpMbufEvent->schedule(addr); +#endif +} + +LinuxSystem::~LinuxSystem() +{ + delete kernel; + delete console; + + delete kernelSymtab; + delete consoleSymtab; + delete bootloaderSymtab; + + delete kernelPanicEvent; + delete consolePanicEvent; + delete badaddrEvent; + delete skipPowerStateEvent; + delete skipScavengeBootEvent; + delete printfEvent; + /*delete debugPrintfEvent; + delete debugPrintfrEvent; + delete dumpMbufEvent; +*/ +} + +void +LinuxSystem::setDelayLoop(ExecContext *xc) +{ + Addr addr = 0; + if (kernelSymtab->findAddress("loops_per_jiffy", addr)) { + Addr paddr = vtophys(physmem, addr); + + uint8_t *loops_per_jiffy = + physmem->dma_addr(paddr, sizeof(uint32_t)); + + Tick cpuFreq = xc->cpu->getFreq(); + Tick intrFreq = platform->interrupt_frequency; + *(uint32_t *)loops_per_jiffy = + (uint32_t)((cpuFreq / intrFreq) * 0.9988); + } +} + +int +LinuxSystem::registerExecContext(ExecContext *xc) +{ + int xcIndex = System::registerExecContext(xc); + + if (xcIndex == 0) { + // activate with zero delay so that we start ticking right + // away on cycle 0 + xc->activate(0); + } + + RemoteGDB *rgdb = new RemoteGDB(this, xc); + GDBListener *gdbl = new GDBListener(rgdb, 7000 + xcIndex); + gdbl->listen(); +// gdbl->accept(); + + if (remoteGDB.size() <= xcIndex) { + remoteGDB.resize(xcIndex+1); + } + + remoteGDB[xcIndex] = rgdb; + + return xcIndex; +} + + +void +LinuxSystem::replaceExecContext(ExecContext *xc, int xcIndex) +{ + System::replaceExecContext(xcIndex, xc); + remoteGDB[xcIndex]->replaceExecContext(xc); +} + +bool +LinuxSystem::breakpoint() +{ + return remoteGDB[0]->trap(ALPHA_KENTRY_IF); +} + +void +LinuxSystem::populateMap(std::string callee, std::string caller) +{ + multimap<const string, string>::const_iterator i; + i = callerMap.insert(make_pair(callee, caller)); + assert(i != callerMap.end() && "should not fail populating callerMap"); +} + +bool +LinuxSystem::findCaller(std::string callee, std::string caller) const +{ + typedef multimap<const std::string, std::string>::const_iterator iter; + pair<iter, iter> range; + + range = callerMap.equal_range(callee); + for (iter i = range.first; i != range.second; ++i) { + if ((*i).second == caller) + return true; + } + return false; +} + +void +LinuxSystem::dumpState(ExecContext *xc) const +{ +#ifndef SW_DEBUG + return; +#endif + if (xc->swCtx) { + stack<fnCall *> copy(xc->swCtx->callStack); + if (copy.empty()) + return; + cprintf("xc->swCtx:\n"); + fnCall *top; + cprintf("|| call: %d\n",xc->swCtx->calls); + for (top = copy.top(); !copy.empty(); copy.pop() ) { + top = copy.top(); + cprintf("|| %13s : %s \n", top->name, top->myBin->name()); + } + } +} + +BEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxSystem) + + Param<bool> bin; + SimObjectParam<MemoryController *> mem_ctl; + SimObjectParam<PhysicalMemory *> physmem; + Param<uint64_t> init_param; + + Param<string> kernel_code; + Param<string> console_code; + Param<string> pal_code; + Param<string> boot_osflags; + Param<string> bootloader_code; + +END_DECLARE_SIM_OBJECT_PARAMS(LinuxSystem) + +BEGIN_INIT_SIM_OBJECT_PARAMS(LinuxSystem) + + + INIT_PARAM_DFLT(bin, "is this system to be binned", false), + INIT_PARAM(mem_ctl, "memory controller"), + INIT_PARAM(physmem, "phsyical memory"), + INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), + INIT_PARAM(kernel_code, "file that contains the code"), + INIT_PARAM(console_code, "file that contains the console code"), + INIT_PARAM(pal_code, "file that contains palcode"), + INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", + "a"), + INIT_PARAM(bootloader_code, "file that contains the bootloader") + + +END_INIT_SIM_OBJECT_PARAMS(LinuxSystem) + +CREATE_SIM_OBJECT(LinuxSystem) +{ + LinuxSystem *sys = new LinuxSystem(getInstanceName(), init_param, mem_ctl, + physmem, kernel_code, console_code, + pal_code, boot_osflags, bootloader_code, bin); + + return sys; +} + +REGISTER_SIM_OBJECT("LinuxSystem", LinuxSystem) |