fs_workload.cc

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/*
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#include "arch/riscv/linux/fs_workload.hh"
 
#include "arch/riscv/faults.hh"
#include "base/loader/dtb_file.hh"
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "cpu/pc_event.hh"
#include "kern/linux/events.hh"
#include "sim/kernel_workload.hh"
#include "sim/sim_exit.hh"
#include "sim/system.hh"
 
namespace gem5
{
 
namespace RiscvISA
{
 
void
FsLinux::initState()
{
    KernelWorkload::initState();
 
    if (params().dtb_filename != "") {
        inform("Loading DTB file: %s at address %#x\n", params().dtb_filename,
                params().dtb_addr);
 
        auto *dtb_file = new loader::DtbFile(params().dtb_filename);
 
        if (!dtb_file->addBootCmdLine(
                    commandLine.c_str(), commandLine.size())) {
            warn("couldn't append bootargs to DTB file: %s\n",
                 params().dtb_filename);
        }
 
        dtb_file->buildImage().offset(params().dtb_addr)
            .write(system->physProxy);
        delete dtb_file;
 
        for (auto *tc: system->threads) {
            tc->setReg(int_reg::A1, params().dtb_addr);
        }
    } else {
        warn("No DTB file specified\n");
    }
 
    for (auto *tc: system->threads) {
        tc->getIsaPtr()->resetThread();
        tc->activate();
    }
}
 
void
FsLinux::startup()
{
    KernelWorkload::startup();
 
    addExitOnKernelPanicEvent();
    addExitOnKernelOopsEvent();
}
 
void
FsLinux::addExitOnKernelPanicEvent()
{
    const std::string dmesg_output = name() + ".dmesg";
    if (params().exit_on_kernel_panic) {
        kernelPanicPcEvent = addKernelFuncEvent<linux::PanicOrOopsEvent>(
            "panic", "Kernel panic in simulated system.",
            dmesg_output, params().on_panic
        );
        warn_if(!kernelPanicPcEvent, "Failed to find kernel symbol 'panic'");
    }
}
 
void
FsLinux::addExitOnKernelOopsEvent()
{
    const std::string dmesg_output = name() + ".dmesg";
    if (params().exit_on_kernel_oops) {
        kernelOopsPcEvent = addKernelFuncEvent<linux::PanicOrOopsEvent>(
            "oops_exit", "Kernel oops in simulated system.",
            dmesg_output, params().on_oops
        );
        warn_if(!kernelOopsPcEvent,
                "Failed to find kernel symbol 'oops_exit'");
    }
}
 
void
BootloaderKernelWorkload::loadBootloaderSymbolTable()
{
    if (params().bootloader_filename != "") {
        Addr bootloader_paddr_offset = params().bootloader_addr;
        bootloader = loader::createObjectFile(params().bootloader_filename);
        bootloaderSymbolTable = bootloader->symtab();
        auto renamedBootloaderSymbolTable = \
            bootloaderSymbolTable.offset(
                bootloader_paddr_offset
            )->functionSymbols()->rename(
                [](const std::string &name) {
                    return "bootloader." + name;
                }
            );
        loader::debugSymbolTable.insert(*renamedBootloaderSymbolTable);
    }
}
 
void
BootloaderKernelWorkload::loadKernelSymbolTable()
{
    if (params().object_file != "") {
        kernel = loader::createObjectFile(params().object_file);
        kernelSymbolTable = kernel->symtab();
        auto renamedKernelSymbolTable = \
            kernelSymbolTable.functionSymbols()->rename(
                [](const std::string &name) {
                    return "kernel." + name;
                }
            );
        loader::debugSymbolTable.insert(*renamedKernelSymbolTable);
    }
}
 
void
BootloaderKernelWorkload::loadBootloader()
{
    if (params().bootloader_filename != "") {
        loader::MemoryImage image = bootloader->buildImage();
        Addr bootloader_addr_offset = \
            params().bootloader_addr - image.minAddr();
        image.offset(bootloader_addr_offset).write(system->physProxy);
        delete bootloader;
 
        inform("Loaded bootloader \'%s\' at 0x%llx\n",
               params().bootloader_filename,
               params().bootloader_addr);
    } else {
        inform("Bootloader is not specified.\n");
    }
}
 
void
BootloaderKernelWorkload::loadKernel()
{
    if (params().object_file != "") {
        loader::MemoryImage image = kernel->buildImage();
        Addr kernel_paddr_offset = params().kernel_addr - image.minAddr();
        image.offset(kernel_paddr_offset).write(system->physProxy);
        delete kernel;
 
        inform("Loaded kernel \'%s\' at 0x%llx\n",
                params().object_file,
                params().kernel_addr);
    } else {
        inform("Kernel is not specified.\n");
    }
}
 
 
void
BootloaderKernelWorkload::loadDtb()
{
    if (params().dtb_filename != "") {
        auto *dtb_file = new loader::DtbFile(params().dtb_filename);
 
        dtb_file->buildImage().offset(params().dtb_addr)
            .write(system->physProxy);
        delete dtb_file;
 
        inform("Loaded DTB \'%s\' at 0x%llx\n",
                params().dtb_filename,
                params().dtb_addr);
 
        for (auto *tc: system->threads) {
            tc->setReg(int_reg::A1, params().dtb_addr);
        }
    } else {
        inform("DTB file is not specified.\n");
    }
}
 
void
BootloaderKernelWorkload::addExitOnKernelPanicEvent()
{
    const std::string dmesg_output = name() + ".dmesg";
    if (params().exit_on_kernel_panic) {
        kernelPanicPcEvent = addFuncEvent<linux::PanicOrOopsEvent>(
            kernelSymbolTable, "panic", "Kernel panic in simulated system.",
            dmesg_output, params().on_panic
        );
    }
}
 
void
BootloaderKernelWorkload::addExitOnKernelOopsEvent()
{
    const std::string dmesg_output = name() + ".dmesg";
    if (params().exit_on_kernel_oops) {
        kernelOopsPcEvent = addFuncEvent<linux::PanicOrOopsEvent>(
            kernelSymbolTable, "oops_exit", "Kernel oops in simulated system.",
            dmesg_output, params().on_oops
        );
    }
}
 
void
BootloaderKernelWorkload::initState()
{
    loadBootloader();
    loadKernel();
    loadDtb();
 
    for (auto *tc: system->threads) {
        tc->getIsaPtr()->resetThread();
        tc->activate();
    }
}
 
void
BootloaderKernelWorkload::startup()
{
    Workload::startup();
 
    addExitOnKernelPanicEvent();
    addExitOnKernelOopsEvent();
}
 
void
BootloaderKernelWorkload::serialize(CheckpointOut &checkpoint) const
{
    bootloaderSymbolTable.serialize("bootloader_symbol_table", checkpoint);
    kernelSymbolTable.serialize("kernel_symbol_table", checkpoint);
}
 
void
BootloaderKernelWorkload::unserialize(CheckpointIn &checkpoint)
{
    bootloaderSymbolTable.unserialize("bootloader_symbol_table", checkpoint);
    kernelSymbolTable.unserialize("kernel_symbol_table", checkpoint);
}
 
} // namespace RiscvISA
} // namespace gem5