【kernel envirment】config tiny X86 kernel no vfs

痛定思痛。 2021-09-22 14:48 234阅读 0赞

# Config the most tiny X86 kernel #

**make tinyconfig**

Generate .config is very small, but can't display message, so we need it can display message.

**make i386\_defconfig**

Generate .config two bigger.

then compare the two .config file, at last generate a tiny config file, which can display message and smalll. (the .config file detail see **appendix 1 the most tiny .config file**)

![20181107114801910.png][]

# Add debug info for gdb debug #

Of cause, we need to debug, so need to add

CONFIG_DEBUG_INFO=y

# Appendix 1 the most tiny .config file (only can display) #

.config detail as bellow: (Don't include debug message)

#
    # Automatically generated file; DO NOT EDIT.
    # Linux/x86 4.19.0 Kernel Configuration
    #
    
    #
    # Compiler: gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
    #
    CONFIG_CC_IS_GCC=y
    CONFIG_GCC_VERSION=70300
    CONFIG_CLANG_VERSION=0
    CONFIG_IRQ_WORK=y
    CONFIG_BUILDTIME_EXTABLE_SORT=y
    CONFIG_THREAD_INFO_IN_TASK=y
    
    #
    # General setup
    #
    CONFIG_BROKEN_ON_SMP=y
    CONFIG_INIT_ENV_ARG_LIMIT=32
    # CONFIG_COMPILE_TEST is not set
    CONFIG_LOCALVERSION=""
    # CONFIG_LOCALVERSION_AUTO is not set
    CONFIG_BUILD_SALT=""
    CONFIG_HAVE_KERNEL_GZIP=y
    CONFIG_HAVE_KERNEL_BZIP2=y
    CONFIG_HAVE_KERNEL_LZMA=y
    CONFIG_HAVE_KERNEL_XZ=y
    CONFIG_HAVE_KERNEL_LZO=y
    CONFIG_HAVE_KERNEL_LZ4=y
    # CONFIG_KERNEL_GZIP is not set
    # CONFIG_KERNEL_BZIP2 is not set
    # CONFIG_KERNEL_LZMA is not set
    CONFIG_KERNEL_XZ=y
    # CONFIG_KERNEL_LZO is not set
    # CONFIG_KERNEL_LZ4 is not set
    CONFIG_DEFAULT_HOSTNAME="(none)"
    # CONFIG_SYSVIPC is not set
    # CONFIG_CROSS_MEMORY_ATTACH is not set
    # CONFIG_USELIB is not set
    CONFIG_HAVE_ARCH_AUDITSYSCALL=y
    
    #
    # IRQ subsystem
    #
    CONFIG_GENERIC_IRQ_PROBE=y
    CONFIG_GENERIC_IRQ_SHOW=y
    CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
    CONFIG_IRQ_FORCED_THREADING=y
    CONFIG_SPARSE_IRQ=y
    CONFIG_CLOCKSOURCE_WATCHDOG=y
    CONFIG_ARCH_CLOCKSOURCE_DATA=y
    CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
    CONFIG_GENERIC_TIME_VSYSCALL=y
    CONFIG_GENERIC_CLOCKEVENTS=y
    CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
    CONFIG_GENERIC_CMOS_UPDATE=y
    
    #
    # Timers subsystem
    #
    CONFIG_HZ_PERIODIC=y
    # CONFIG_NO_HZ_IDLE is not set
    # CONFIG_NO_HZ is not set
    # CONFIG_HIGH_RES_TIMERS is not set
    CONFIG_PREEMPT_NONE=y
    # CONFIG_PREEMPT_VOLUNTARY is not set
    # CONFIG_PREEMPT is not set
    
    #
    # CPU/Task time and stats accounting
    #
    CONFIG_TICK_CPU_ACCOUNTING=y
    # CONFIG_IRQ_TIME_ACCOUNTING is not set
    
    #
    # RCU Subsystem
    #
    CONFIG_TINY_RCU=y
    # CONFIG_RCU_EXPERT is not set
    CONFIG_SRCU=y
    CONFIG_TINY_SRCU=y
    # CONFIG_IKCONFIG is not set
    CONFIG_LOG_BUF_SHIFT=17
    CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
    CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
    CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
    # CONFIG_CGROUPS is not set
    # CONFIG_CHECKPOINT_RESTORE is not set
    # CONFIG_SCHED_AUTOGROUP is not set
    # CONFIG_RELAY is not set
    # CONFIG_BLK_DEV_INITRD is not set
    # CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
    CONFIG_CC_OPTIMIZE_FOR_SIZE=y
    CONFIG_ANON_INODES=y
    CONFIG_HAVE_UID16=y
    CONFIG_SYSCTL_EXCEPTION_TRACE=y
    CONFIG_HAVE_PCSPKR_PLATFORM=y
    CONFIG_EXPERT=y
    # CONFIG_MULTIUSER is not set
    # CONFIG_SGETMASK_SYSCALL is not set
    # CONFIG_SYSFS_SYSCALL is not set
    # CONFIG_FHANDLE is not set
    # CONFIG_POSIX_TIMERS is not set
    CONFIG_PRINTK=y
    CONFIG_PRINTK_NMI=y
    # CONFIG_BUG is not set
    # CONFIG_PCSPKR_PLATFORM is not set
    # CONFIG_BASE_FULL is not set
    # CONFIG_FUTEX is not set
    # CONFIG_EPOLL is not set
    # CONFIG_SIGNALFD is not set
    # CONFIG_TIMERFD is not set
    # CONFIG_EVENTFD is not set
    # CONFIG_SHMEM is not set
    # CONFIG_AIO is not set
    # CONFIG_ADVISE_SYSCALLS is not set
    # CONFIG_MEMBARRIER is not set
    # CONFIG_KALLSYMS is not set
    # CONFIG_BPF_SYSCALL is not set
    # CONFIG_USERFAULTFD is not set
    CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
    # CONFIG_RSEQ is not set
    CONFIG_EMBEDDED=y
    CONFIG_HAVE_PERF_EVENTS=y
    # CONFIG_PC104 is not set
    
    #
    # Kernel Performance Events And Counters
    #
    CONFIG_PERF_EVENTS=y
    # CONFIG_DEBUG_PERF_USE_VMALLOC is not set
    # CONFIG_VM_EVENT_COUNTERS is not set
    # CONFIG_COMPAT_BRK is not set
    # CONFIG_SLAB is not set
    # CONFIG_SLUB is not set
    CONFIG_SLOB=y
    # CONFIG_SLAB_MERGE_DEFAULT is not set
    # CONFIG_PROFILING is not set
    # CONFIG_64BIT is not set
    CONFIG_X86_32=y
    CONFIG_X86=y
    CONFIG_INSTRUCTION_DECODER=y
    CONFIG_OUTPUT_FORMAT="elf32-i386"
    CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
    CONFIG_LOCKDEP_SUPPORT=y
    CONFIG_STACKTRACE_SUPPORT=y
    CONFIG_MMU=y
    CONFIG_ARCH_MMAP_RND_BITS_MIN=8
    CONFIG_ARCH_MMAP_RND_BITS_MAX=16
    CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
    CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
    CONFIG_GENERIC_ISA_DMA=y
    CONFIG_GENERIC_HWEIGHT=y
    CONFIG_ARCH_MAY_HAVE_PC_FDC=y
    CONFIG_RWSEM_XCHGADD_ALGORITHM=y
    CONFIG_GENERIC_CALIBRATE_DELAY=y
    CONFIG_ARCH_HAS_CPU_RELAX=y
    CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
    CONFIG_ARCH_HAS_FILTER_PGPROT=y
    CONFIG_HAVE_SETUP_PER_CPU_AREA=y
    CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
    CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
    CONFIG_ARCH_HIBERNATION_POSSIBLE=y
    CONFIG_ARCH_SUSPEND_POSSIBLE=y
    CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
    CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
    CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
    CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
    CONFIG_X86_32_LAZY_GS=y
    CONFIG_ARCH_SUPPORTS_UPROBES=y
    CONFIG_FIX_EARLYCON_MEM=y
    CONFIG_PGTABLE_LEVELS=2
    CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
    
    #
    # Processor type and features
    #
    # CONFIG_ZONE_DMA is not set
    # CONFIG_SMP is not set
    # CONFIG_X86_FEATURE_NAMES is not set
    # CONFIG_GOLDFISH is not set
    # CONFIG_RETPOLINE is not set
    # CONFIG_INTEL_RDT is not set
    # CONFIG_X86_EXTENDED_PLATFORM is not set
    # CONFIG_X86_32_IRIS is not set
    # CONFIG_SCHED_OMIT_FRAME_POINTER is not set
    # CONFIG_HYPERVISOR_GUEST is not set
    CONFIG_NO_BOOTMEM=y
    # CONFIG_M486 is not set
    # CONFIG_M586 is not set
    # CONFIG_M586TSC is not set
    # CONFIG_M586MMX is not set
    CONFIG_M686=y
    # CONFIG_MPENTIUMII is not set
    # CONFIG_MPENTIUMIII is not set
    # CONFIG_MPENTIUMM is not set
    # CONFIG_MPENTIUM4 is not set
    # CONFIG_MK6 is not set
    # CONFIG_MK7 is not set
    # CONFIG_MK8 is not set
    # CONFIG_MCRUSOE is not set
    # CONFIG_MEFFICEON is not set
    # CONFIG_MWINCHIPC6 is not set
    # CONFIG_MWINCHIP3D is not set
    # CONFIG_MELAN is not set
    # CONFIG_MGEODEGX1 is not set
    # CONFIG_MGEODE_LX is not set
    # CONFIG_MCYRIXIII is not set
    # CONFIG_MVIAC3_2 is not set
    # CONFIG_MVIAC7 is not set
    # CONFIG_MCORE2 is not set
    # CONFIG_MATOM is not set
    # CONFIG_X86_GENERIC is not set
    CONFIG_X86_INTERNODE_CACHE_SHIFT=5
    CONFIG_X86_L1_CACHE_SHIFT=5
    CONFIG_X86_USE_PPRO_CHECKSUM=y
    CONFIG_X86_TSC=y
    CONFIG_X86_CMPXCHG64=y
    CONFIG_X86_CMOV=y
    CONFIG_X86_MINIMUM_CPU_FAMILY=6
    CONFIG_X86_DEBUGCTLMSR=y
    # CONFIG_PROCESSOR_SELECT is not set
    CONFIG_CPU_SUP_INTEL=y
    CONFIG_CPU_SUP_CYRIX_32=y
    CONFIG_CPU_SUP_AMD=y
    CONFIG_CPU_SUP_CENTAUR=y
    CONFIG_CPU_SUP_TRANSMETA_32=y
    CONFIG_CPU_SUP_UMC_32=y
    # CONFIG_HPET_TIMER is not set
    # CONFIG_DMI is not set
    CONFIG_NR_CPUS_RANGE_BEGIN=1
    CONFIG_NR_CPUS_RANGE_END=1
    CONFIG_NR_CPUS_DEFAULT=1
    CONFIG_NR_CPUS=1
    # CONFIG_X86_UP_APIC is not set
    # CONFIG_X86_MCE is not set
    
    #
    # Performance monitoring
    #
    # CONFIG_PERF_EVENTS_AMD_POWER is not set
    # CONFIG_X86_LEGACY_VM86 is not set
    # CONFIG_TOSHIBA is not set
    # CONFIG_I8K is not set
    # CONFIG_X86_REBOOTFIXUPS is not set
    # CONFIG_MICROCODE is not set
    # CONFIG_X86_MSR is not set
    # CONFIG_X86_CPUID is not set
    CONFIG_NOHIGHMEM=y
    # CONFIG_HIGHMEM4G is not set
    # CONFIG_HIGHMEM64G is not set
    CONFIG_VMSPLIT_3G=y
    # CONFIG_VMSPLIT_3G_OPT is not set
    # CONFIG_VMSPLIT_2G is not set
    # CONFIG_VMSPLIT_2G_OPT is not set
    # CONFIG_VMSPLIT_1G is not set
    CONFIG_PAGE_OFFSET=0xC0000000
    # CONFIG_X86_PAE is not set
    CONFIG_ARCH_HAS_MEM_ENCRYPT=y
    CONFIG_ARCH_FLATMEM_ENABLE=y
    CONFIG_ARCH_SPARSEMEM_ENABLE=y
    CONFIG_ARCH_SELECT_MEMORY_MODEL=y
    CONFIG_ILLEGAL_POINTER_VALUE=0
    # CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
    CONFIG_X86_RESERVE_LOW=64
    # CONFIG_MTRR is not set
    # CONFIG_ARCH_RANDOM is not set
    # CONFIG_X86_SMAP is not set
    # CONFIG_X86_INTEL_UMIP is not set
    # CONFIG_SECCOMP is not set
    # CONFIG_HZ_100 is not set
    CONFIG_HZ_250=y
    # CONFIG_HZ_300 is not set
    # CONFIG_HZ_1000 is not set
    CONFIG_HZ=250
    # CONFIG_KEXEC is not set
    CONFIG_PHYSICAL_START=0x1000000
    # CONFIG_RELOCATABLE is not set
    CONFIG_PHYSICAL_ALIGN=0x200000
    # CONFIG_COMPAT_VDSO is not set
    # CONFIG_CMDLINE_BOOL is not set
    # CONFIG_MODIFY_LDT_SYSCALL is not set
    
    #
    # Power management and ACPI options
    #
    # CONFIG_SUSPEND is not set
    # CONFIG_PM is not set
    CONFIG_ARCH_SUPPORTS_ACPI=y
    # CONFIG_SFI is not set
    
    #
    # CPU Frequency scaling
    #
    # CONFIG_CPU_FREQ is not set
    
    #
    # CPU Idle
    #
    # CONFIG_CPU_IDLE is not set
    
    #
    # Bus options (PCI etc.)
    #
    # CONFIG_PCI is not set
    CONFIG_PCI_LOCKLESS_CONFIG=y
    
    #
    # PCI Endpoint
    #
    # CONFIG_PCI_ENDPOINT is not set
    # CONFIG_ISA_BUS is not set
    CONFIG_ISA_DMA_API=y
    # CONFIG_ISA is not set
    # CONFIG_SCx200 is not set
    # CONFIG_OLPC is not set
    # CONFIG_ALIX is not set
    # CONFIG_NET5501 is not set
    # CONFIG_PCCARD is not set
    # CONFIG_X86_SYSFB is not set
    
    #
    # Binary Emulations
    #
    CONFIG_COMPAT_32=y
    CONFIG_HAVE_ATOMIC_IOMAP=y
    CONFIG_HAVE_GENERIC_GUP=y
    
    #
    # Firmware Drivers
    #
    # CONFIG_EDD is not set
    # CONFIG_FIRMWARE_MEMMAP is not set
    # CONFIG_DELL_RBU is not set
    # CONFIG_DCDBAS is not set
    # CONFIG_GOOGLE_FIRMWARE is not set
    
    #
    # Tegra firmware driver
    #
    CONFIG_HAVE_KVM=y
    # CONFIG_VIRTUALIZATION is not set
    
    #
    # General architecture-dependent options
    #
    CONFIG_HAVE_OPROFILE=y
    CONFIG_OPROFILE_NMI_TIMER=y
    # CONFIG_JUMP_LABEL is not set
    CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
    CONFIG_ARCH_USE_BUILTIN_BSWAP=y
    CONFIG_HAVE_IOREMAP_PROT=y
    CONFIG_HAVE_KPROBES=y
    CONFIG_HAVE_KRETPROBES=y
    CONFIG_HAVE_OPTPROBES=y
    CONFIG_HAVE_KPROBES_ON_FTRACE=y
    CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
    CONFIG_HAVE_NMI=y
    CONFIG_HAVE_ARCH_TRACEHOOK=y
    CONFIG_HAVE_DMA_CONTIGUOUS=y
    CONFIG_GENERIC_SMP_IDLE_THREAD=y
    CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
    CONFIG_ARCH_HAS_SET_MEMORY=y
    CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
    CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
    CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
    CONFIG_HAVE_RSEQ=y
    CONFIG_HAVE_HW_BREAKPOINT=y
    CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
    CONFIG_HAVE_USER_RETURN_NOTIFIER=y
    CONFIG_HAVE_PERF_EVENTS_NMI=y
    CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
    CONFIG_HAVE_PERF_REGS=y
    CONFIG_HAVE_PERF_USER_STACK_DUMP=y
    CONFIG_HAVE_ARCH_JUMP_LABEL=y
    CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
    CONFIG_HAVE_CMPXCHG_LOCAL=y
    CONFIG_HAVE_CMPXCHG_DOUBLE=y
    CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
    CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
    CONFIG_HAVE_STACKPROTECTOR=y
    CONFIG_CC_HAS_STACKPROTECTOR_NONE=y
    # CONFIG_STACKPROTECTOR is not set
    CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
    CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
    CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
    CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
    CONFIG_MODULES_USE_ELF_REL=y
    CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
    CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
    CONFIG_HAVE_EXIT_THREAD=y
    CONFIG_ARCH_MMAP_RND_BITS=8
    CONFIG_HAVE_COPY_THREAD_TLS=y
    CONFIG_CLONE_BACKWARDS=y
    CONFIG_OLD_SIGSUSPEND3=y
    CONFIG_OLD_SIGACTION=y
    CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
    CONFIG_STRICT_KERNEL_RWX=y
    CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
    CONFIG_ARCH_HAS_REFCOUNT=y
    # CONFIG_REFCOUNT_FULL is not set
    CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
    
    #
    # GCOV-based kernel profiling
    #
    CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
    CONFIG_PLUGIN_HOSTCC=""
    CONFIG_HAVE_GCC_PLUGINS=y
    CONFIG_BASE_SMALL=1
    # CONFIG_MODULES is not set
    CONFIG_MODULES_TREE_LOOKUP=y
    # CONFIG_BLOCK is not set
    CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
    CONFIG_INLINE_READ_UNLOCK=y
    CONFIG_INLINE_READ_UNLOCK_IRQ=y
    CONFIG_INLINE_WRITE_UNLOCK=y
    CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
    CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
    CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
    CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
    CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
    
    #
    # Executable file formats
    #
    # CONFIG_BINFMT_ELF is not set
    # CONFIG_BINFMT_SCRIPT is not set
    CONFIG_HAVE_AOUT=y
    # CONFIG_BINFMT_AOUT is not set
    # CONFIG_BINFMT_MISC is not set
    # CONFIG_COREDUMP is not set
    
    #
    # Memory Management options
    #
    CONFIG_SELECT_MEMORY_MODEL=y
    CONFIG_FLATMEM_MANUAL=y
    # CONFIG_SPARSEMEM_MANUAL is not set
    CONFIG_FLATMEM=y
    CONFIG_FLAT_NODE_MEM_MAP=y
    CONFIG_SPARSEMEM_STATIC=y
    CONFIG_HAVE_MEMBLOCK=y
    CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
    CONFIG_ARCH_DISCARD_MEMBLOCK=y
    CONFIG_SPLIT_PTLOCK_CPUS=4
    # CONFIG_COMPACTION is not set
    CONFIG_VIRT_TO_BUS=y
    # CONFIG_KSM is not set
    CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
    # CONFIG_TRANSPARENT_HUGEPAGE is not set
    CONFIG_NEED_PER_CPU_KM=y
    # CONFIG_CLEANCACHE is not set
    # CONFIG_CMA is not set
    # CONFIG_ZPOOL is not set
    # CONFIG_ZBUD is not set
    # CONFIG_ZSMALLOC is not set
    CONFIG_GENERIC_EARLY_IOREMAP=y
    # CONFIG_PERCPU_STATS is not set
    # CONFIG_GUP_BENCHMARK is not set
    CONFIG_ARCH_HAS_PTE_SPECIAL=y
    # CONFIG_NET is not set
    CONFIG_HAVE_EBPF_JIT=y
    
    #
    # Device Drivers
    #
    
    #
    # Generic Driver Options
    #
    # CONFIG_UEVENT_HELPER is not set
    # CONFIG_DEVTMPFS is not set
    # CONFIG_STANDALONE is not set
    # CONFIG_PREVENT_FIRMWARE_BUILD is not set
    
    #
    # Firmware loader
    #
    # CONFIG_FW_LOADER is not set
    # CONFIG_ALLOW_DEV_COREDUMP is not set
    # CONFIG_DEBUG_DRIVER is not set
    # CONFIG_DEBUG_DEVRES is not set
    # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
    CONFIG_GENERIC_CPU_AUTOPROBE=y
    CONFIG_GENERIC_CPU_VULNERABILITIES=y
    
    #
    # Bus devices
    #
    # CONFIG_GNSS is not set
    # CONFIG_MTD is not set
    # CONFIG_OF is not set
    CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
    # CONFIG_PARPORT is not set
    
    #
    # NVME Support
    #
    
    #
    # Misc devices
    #
    # CONFIG_DUMMY_IRQ is not set
    # CONFIG_ENCLOSURE_SERVICES is not set
    # CONFIG_SRAM is not set
    # CONFIG_C2PORT is not set
    
    #
    # EEPROM support
    #
    # CONFIG_EEPROM_93CX6 is not set
    
    #
    # Texas Instruments shared transport line discipline
    #
    
    #
    # Altera FPGA firmware download module (requires I2C)
    #
    
    #
    # Intel MIC & related support
    #
    
    #
    # Intel MIC Bus Driver
    #
    
    #
    # SCIF Bus Driver
    #
    
    #
    # VOP Bus Driver
    #
    
    #
    # Intel MIC Host Driver
    #
    
    #
    # Intel MIC Card Driver
    #
    
    #
    # SCIF Driver
    #
    
    #
    # Intel MIC Coprocessor State Management (COSM) Drivers
    #
    
    #
    # VOP Driver
    #
    # CONFIG_ECHO is not set
    CONFIG_HAVE_IDE=y
    
    #
    # SCSI device support
    #
    CONFIG_SCSI_MOD=y
    # CONFIG_MACINTOSH_DRIVERS is not set
    
    #
    # Input device support
    #
    CONFIG_INPUT=y
    # CONFIG_INPUT_FF_MEMLESS is not set
    # CONFIG_INPUT_POLLDEV is not set
    # CONFIG_INPUT_SPARSEKMAP is not set
    # CONFIG_INPUT_MATRIXKMAP is not set
    
    #
    # Userland interfaces
    #
    # CONFIG_INPUT_MOUSEDEV is not set
    # CONFIG_INPUT_JOYDEV is not set
    # CONFIG_INPUT_EVDEV is not set
    # CONFIG_INPUT_EVBUG is not set
    
    #
    # Input Device Drivers
    #
    # CONFIG_INPUT_KEYBOARD is not set
    # CONFIG_INPUT_MOUSE is not set
    # CONFIG_INPUT_JOYSTICK is not set
    # CONFIG_INPUT_TABLET is not set
    # CONFIG_INPUT_TOUCHSCREEN is not set
    # CONFIG_INPUT_MISC is not set
    # CONFIG_RMI4_CORE is not set
    
    #
    # Hardware I/O ports
    #
    # CONFIG_SERIO is not set
    CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
    # CONFIG_GAMEPORT is not set
    
    #
    # Character devices
    #
    CONFIG_TTY=y
    CONFIG_VT=y
    CONFIG_CONSOLE_TRANSLATIONS=y
    CONFIG_VT_CONSOLE=y
    CONFIG_HW_CONSOLE=y
    # CONFIG_VT_HW_CONSOLE_BINDING is not set
    CONFIG_UNIX98_PTYS=y
    # CONFIG_LEGACY_PTYS is not set
    # CONFIG_SERIAL_NONSTANDARD is not set
    # CONFIG_TRACE_SINK is not set
    # CONFIG_DEVMEM is not set
    # CONFIG_DEVKMEM is not set
    
    #
    # Serial drivers
    #
    # CONFIG_SERIAL_8250 is not set
    
    #
    # Non-8250 serial port support
    #
    # CONFIG_SERIAL_UARTLITE is not set
    # CONFIG_SERIAL_SCCNXP is not set
    # CONFIG_SERIAL_TIMBERDALE is not set
    # CONFIG_SERIAL_ALTERA_JTAGUART is not set
    # CONFIG_SERIAL_ALTERA_UART is not set
    # CONFIG_SERIAL_ARC is not set
    # CONFIG_SERIAL_FSL_LPUART is not set
    # CONFIG_SERIAL_DEV_BUS is not set
    # CONFIG_TTY_PRINTK is not set
    # CONFIG_IPMI_HANDLER is not set
    # CONFIG_HW_RANDOM is not set
    # CONFIG_NVRAM is not set
    # CONFIG_R3964 is not set
    # CONFIG_MWAVE is not set
    # CONFIG_PC8736x_GPIO is not set
    # CONFIG_NSC_GPIO is not set
    # CONFIG_HANGCHECK_TIMER is not set
    # CONFIG_TCG_TPM is not set
    # CONFIG_TELCLOCK is not set
    # CONFIG_RANDOM_TRUST_CPU is not set
    
    #
    # I2C support
    #
    # CONFIG_I2C is not set
    # CONFIG_SPI is not set
    # CONFIG_SPMI is not set
    # CONFIG_HSI is not set
    # CONFIG_PPS is not set
    
    #
    # PTP clock support
    #
    
    #
    # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
    #
    # CONFIG_PINCTRL is not set
    # CONFIG_GPIOLIB is not set
    # CONFIG_W1 is not set
    # CONFIG_POWER_AVS is not set
    # CONFIG_POWER_RESET is not set
    # CONFIG_POWER_SUPPLY is not set
    # CONFIG_HWMON is not set
    # CONFIG_THERMAL is not set
    # CONFIG_WATCHDOG is not set
    CONFIG_SSB_POSSIBLE=y
    # CONFIG_SSB is not set
    CONFIG_BCMA_POSSIBLE=y
    # CONFIG_BCMA is not set
    
    #
    # Multifunction device drivers
    #
    # CONFIG_MFD_CROS_EC is not set
    # CONFIG_MFD_MADERA is not set
    # CONFIG_HTC_PASIC3 is not set
    # CONFIG_MFD_KEMPLD is not set
    # CONFIG_MFD_MT6397 is not set
    # CONFIG_MFD_SM501 is not set
    # CONFIG_ABX500_CORE is not set
    # CONFIG_MFD_SYSCON is not set
    # CONFIG_MFD_TI_AM335X_TSCADC is not set
    # CONFIG_REGULATOR is not set
    # CONFIG_RC_CORE is not set
    # CONFIG_MEDIA_SUPPORT is not set
    
    #
    # Graphics support
    #
    # CONFIG_DRM is not set
    # CONFIG_DRM_DP_CEC is not set
    
    #
    # ACP (Audio CoProcessor) Configuration
    #
    
    #
    # AMD Library routines
    #
    
    #
    # Frame buffer Devices
    #
    # CONFIG_FB is not set
    # CONFIG_BACKLIGHT_LCD_SUPPORT is not set
    
    #
    # Console display driver support
    #
    CONFIG_VGA_CONSOLE=y
    # CONFIG_VGACON_SOFT_SCROLLBACK is not set
    CONFIG_DUMMY_CONSOLE=y
    CONFIG_DUMMY_CONSOLE_COLUMNS=80
    CONFIG_DUMMY_CONSOLE_ROWS=25
    # CONFIG_SOUND is not set
    
    #
    # HID support
    #
    # CONFIG_HID is not set
    CONFIG_USB_OHCI_LITTLE_ENDIAN=y
    # CONFIG_USB_SUPPORT is not set
    # CONFIG_UWB is not set
    # CONFIG_MMC is not set
    # CONFIG_MEMSTICK is not set
    # CONFIG_NEW_LEDS is not set
    # CONFIG_ACCESSIBILITY is not set
    CONFIG_EDAC_ATOMIC_SCRUB=y
    CONFIG_EDAC_SUPPORT=y
    CONFIG_RTC_LIB=y
    CONFIG_RTC_MC146818_LIB=y
    # CONFIG_RTC_CLASS is not set
    # CONFIG_DMADEVICES is not set
    
    #
    # DMABUF options
    #
    # CONFIG_SYNC_FILE is not set
    # CONFIG_AUXDISPLAY is not set
    # CONFIG_UIO is not set
    # CONFIG_VIRT_DRIVERS is not set
    # CONFIG_VIRTIO_MENU is not set
    
    #
    # Microsoft Hyper-V guest support
    #
    # CONFIG_STAGING is not set
    # CONFIG_X86_PLATFORM_DEVICES is not set
    # CONFIG_CHROME_PLATFORMS is not set
    # CONFIG_MELLANOX_PLATFORM is not set
    # CONFIG_HWSPINLOCK is not set
    
    #
    # Clock Source drivers
    #
    CONFIG_CLKSRC_I8253=y
    CONFIG_CLKEVT_I8253=y
    CONFIG_CLKBLD_I8253=y
    # CONFIG_MAILBOX is not set
    # CONFIG_IOMMU_SUPPORT is not set
    
    #
    # Remoteproc drivers
    #
    # CONFIG_REMOTEPROC is not set
    
    #
    # Rpmsg drivers
    #
    # CONFIG_RPMSG_VIRTIO is not set
    # CONFIG_SOUNDWIRE is not set
    
    #
    # SOC (System On Chip) specific Drivers
    #
    
    #
    # Amlogic SoC drivers
    #
    
    #
    # Broadcom SoC drivers
    #
    
    #
    # NXP/Freescale QorIQ SoC drivers
    #
    
    #
    # i.MX SoC drivers
    #
    
    #
    # Qualcomm SoC drivers
    #
    # CONFIG_SOC_TI is not set
    
    #
    # Xilinx SoC drivers
    #
    # CONFIG_XILINX_VCU is not set
    # CONFIG_PM_DEVFREQ is not set
    # CONFIG_EXTCON is not set
    # CONFIG_MEMORY is not set
    # CONFIG_IIO is not set
    # CONFIG_PWM is not set
    
    #
    # IRQ chip support
    #
    CONFIG_ARM_GIC_MAX_NR=1
    # CONFIG_IPACK_BUS is not set
    # CONFIG_RESET_CONTROLLER is not set
    # CONFIG_FMC is not set
    
    #
    # PHY Subsystem
    #
    # CONFIG_GENERIC_PHY is not set
    # CONFIG_BCM_KONA_USB2_PHY is not set
    # CONFIG_PHY_PXA_28NM_HSIC is not set
    # CONFIG_PHY_PXA_28NM_USB2 is not set
    # CONFIG_POWERCAP is not set
    # CONFIG_MCB is not set
    
    #
    # Performance monitor support
    #
    # CONFIG_RAS is not set
    
    #
    # Android
    #
    # CONFIG_ANDROID is not set
    # CONFIG_DAX is not set
    # CONFIG_NVMEM is not set
    
    #
    # HW tracing support
    #
    # CONFIG_STM is not set
    # CONFIG_INTEL_TH is not set
    # CONFIG_FPGA is not set
    # CONFIG_SIOX is not set
    # CONFIG_SLIMBUS is not set
    
    #
    # File systems
    #
    CONFIG_DCACHE_WORD_ACCESS=y
    # CONFIG_EXPORTFS_BLOCK_OPS is not set
    # CONFIG_FILE_LOCKING is not set
    # CONFIG_FS_ENCRYPTION is not set
    # CONFIG_DNOTIFY is not set
    # CONFIG_INOTIFY_USER is not set
    # CONFIG_FANOTIFY is not set
    # CONFIG_QUOTA is not set
    # CONFIG_AUTOFS4_FS is not set
    # CONFIG_AUTOFS_FS is not set
    # CONFIG_FUSE_FS is not set
    # CONFIG_OVERLAY_FS is not set
    
    #
    # Caches
    #
    # CONFIG_FSCACHE is not set
    
    #
    # Pseudo filesystems
    #
    # CONFIG_PROC_FS is not set
    # CONFIG_PROC_CHILDREN is not set
    # CONFIG_SYSFS is not set
    # CONFIG_HUGETLBFS is not set
    # CONFIG_CONFIGFS_FS is not set
    # CONFIG_MISC_FILESYSTEMS is not set
    # CONFIG_NLS is not set
    
    #
    # Security options
    #
    # CONFIG_KEYS is not set
    # CONFIG_SECURITY_DMESG_RESTRICT is not set
    # CONFIG_SECURITYFS is not set
    # CONFIG_FORTIFY_SOURCE is not set
    # CONFIG_STATIC_USERMODEHELPER is not set
    CONFIG_DEFAULT_SECURITY_DAC=y
    CONFIG_DEFAULT_SECURITY=""
    # CONFIG_CRYPTO is not set
    
    #
    # Library routines
    #
    CONFIG_GENERIC_STRNCPY_FROM_USER=y
    CONFIG_GENERIC_STRNLEN_USER=y
    CONFIG_GENERIC_FIND_FIRST_BIT=y
    CONFIG_GENERIC_PCI_IOMAP=y
    CONFIG_GENERIC_IOMAP=y
    CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
    # CONFIG_CRC_CCITT is not set
    # CONFIG_CRC16 is not set
    # CONFIG_CRC_T10DIF is not set
    # CONFIG_CRC_ITU_T is not set
    # CONFIG_CRC32 is not set
    # CONFIG_CRC64 is not set
    # CONFIG_CRC4 is not set
    # CONFIG_CRC7 is not set
    # CONFIG_LIBCRC32C is not set
    # CONFIG_CRC8 is not set
    # CONFIG_RANDOM32_SELFTEST is not set
    # CONFIG_XZ_DEC is not set
    CONFIG_HAS_IOMEM=y
    CONFIG_HAS_IOPORT_MAP=y
    CONFIG_HAS_DMA=y
    CONFIG_NEED_SG_DMA_LENGTH=y
    CONFIG_HAVE_GENERIC_DMA_COHERENT=y
    CONFIG_DMA_DIRECT_OPS=y
    # CONFIG_CORDIC is not set
    # CONFIG_DDR is not set
    # CONFIG_IRQ_POLL is not set
    CONFIG_ARCH_HAS_SG_CHAIN=y
    # CONFIG_STRING_SELFTEST is not set
    
    #
    # Kernel hacking
    #
    
    #
    # printk and dmesg options
    #
    # CONFIG_PRINTK_TIME is not set
    CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
    CONFIG_CONSOLE_LOGLEVEL_QUIET=4
    CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
    # CONFIG_BOOT_PRINTK_DELAY is not set
    
    #
    # Compile-time checks and compiler options
    #
    # CONFIG_DEBUG_INFO is not set
    # CONFIG_ENABLE_MUST_CHECK is not set
    CONFIG_FRAME_WARN=1024
    # CONFIG_STRIP_ASM_SYMS is not set
    # CONFIG_READABLE_ASM is not set
    # CONFIG_UNUSED_SYMBOLS is not set
    # CONFIG_PAGE_OWNER is not set
    # CONFIG_DEBUG_FS is not set
    # CONFIG_HEADERS_CHECK is not set
    # CONFIG_DEBUG_SECTION_MISMATCH is not set
    # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
    # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
    # CONFIG_MAGIC_SYSRQ is not set
    CONFIG_DEBUG_KERNEL=y
    
    #
    # Memory Debugging
    #
    # CONFIG_PAGE_EXTENSION is not set
    # CONFIG_DEBUG_PAGEALLOC is not set
    # CONFIG_PAGE_POISONING is not set
    # CONFIG_DEBUG_RODATA_TEST is not set
    # CONFIG_DEBUG_OBJECTS is not set
    CONFIG_HAVE_DEBUG_KMEMLEAK=y
    # CONFIG_DEBUG_KMEMLEAK is not set
    # CONFIG_DEBUG_STACK_USAGE is not set
    # CONFIG_DEBUG_VM is not set
    CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
    # CONFIG_DEBUG_VIRTUAL is not set
    # CONFIG_DEBUG_MEMORY_INIT is not set
    CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
    # CONFIG_DEBUG_STACKOVERFLOW is not set
    CONFIG_CC_HAS_SANCOV_TRACE_PC=y
    # CONFIG_DEBUG_SHIRQ is not set
    
    #
    # Debug Lockups and Hangs
    #
    # CONFIG_SOFTLOCKUP_DETECTOR is not set
    # CONFIG_HARDLOCKUP_DETECTOR is not set
    # CONFIG_DETECT_HUNG_TASK is not set
    # CONFIG_WQ_WATCHDOG is not set
    # CONFIG_PANIC_ON_OOPS is not set
    CONFIG_PANIC_ON_OOPS_VALUE=0
    CONFIG_PANIC_TIMEOUT=0
    # CONFIG_SCHED_STACK_END_CHECK is not set
    # CONFIG_DEBUG_TIMEKEEPING is not set
    
    #
    # Lock Debugging (spinlocks, mutexes, etc...)
    #
    CONFIG_LOCK_DEBUGGING_SUPPORT=y
    # CONFIG_PROVE_LOCKING is not set
    # CONFIG_LOCK_STAT is not set
    # CONFIG_DEBUG_SPINLOCK is not set
    # CONFIG_DEBUG_MUTEXES is not set
    # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
    # CONFIG_DEBUG_LOCK_ALLOC is not set
    # CONFIG_DEBUG_ATOMIC_SLEEP is not set
    # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
    # CONFIG_LOCK_TORTURE_TEST is not set
    # CONFIG_WW_MUTEX_SELFTEST is not set
    # CONFIG_STACKTRACE is not set
    # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
    # CONFIG_DEBUG_KOBJECT is not set
    # CONFIG_DEBUG_LIST is not set
    # CONFIG_DEBUG_PI_LIST is not set
    # CONFIG_DEBUG_SG is not set
    # CONFIG_DEBUG_NOTIFIERS is not set
    # CONFIG_DEBUG_CREDENTIALS is not set
    
    #
    # RCU Debugging
    #
    # CONFIG_RCU_PERF_TEST is not set
    # CONFIG_RCU_TORTURE_TEST is not set
    # CONFIG_RCU_TRACE is not set
    # CONFIG_RCU_EQS_DEBUG is not set
    # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
    # CONFIG_NOTIFIER_ERROR_INJECTION is not set
    # CONFIG_FAULT_INJECTION is not set
    CONFIG_USER_STACKTRACE_SUPPORT=y
    CONFIG_HAVE_FUNCTION_TRACER=y
    CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
    CONFIG_HAVE_DYNAMIC_FTRACE=y
    CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
    CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
    CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
    CONFIG_HAVE_C_RECORDMCOUNT=y
    CONFIG_TRACING_SUPPORT=y
    # CONFIG_FTRACE is not set
    # CONFIG_DMA_API_DEBUG is not set
    # CONFIG_RUNTIME_TESTING_MENU is not set
    # CONFIG_MEMTEST is not set
    # CONFIG_BUG_ON_DATA_CORRUPTION is not set
    # CONFIG_SAMPLES is not set
    CONFIG_HAVE_ARCH_KGDB=y
    # CONFIG_KGDB is not set
    CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
    # CONFIG_UBSAN is not set
    CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
    CONFIG_TRACE_IRQFLAGS_SUPPORT=y
    # CONFIG_X86_VERBOSE_BOOTUP is not set
    # CONFIG_EARLY_PRINTK is not set
    # CONFIG_X86_PTDUMP is not set
    # CONFIG_DEBUG_WX is not set
    # CONFIG_DOUBLEFAULT is not set
    # CONFIG_DEBUG_TLBFLUSH is not set
    CONFIG_HAVE_MMIOTRACE_SUPPORT=y
    CONFIG_IO_DELAY_TYPE_0X80=0
    CONFIG_IO_DELAY_TYPE_0XED=1
    CONFIG_IO_DELAY_TYPE_UDELAY=2
    CONFIG_IO_DELAY_TYPE_NONE=3
    CONFIG_IO_DELAY_0X80=y
    # CONFIG_IO_DELAY_0XED is not set
    # CONFIG_IO_DELAY_UDELAY is not set
    # CONFIG_IO_DELAY_NONE is not set
    CONFIG_DEFAULT_IO_DELAY_TYPE=0
    # CONFIG_CPA_DEBUG is not set
    CONFIG_OPTIMIZE_INLINING=y
    # CONFIG_DEBUG_ENTRY is not set
    # CONFIG_X86_DEBUG_FPU is not set
    # CONFIG_UNWINDER_FRAME_POINTER is not set
    CONFIG_UNWINDER_GUESS=y

# Appendix 2 Others config command #

**method to config by text**:

a.we can configure is throuth ".config" file, which is stored the configure result. and we can direct modify the file.

b.(Better method)cd linux-4.19\\arch\\x86\\configs, copy "i386\_defconfig" to "i386simple\_defconfig", then change the config.And can using "i386simple\_defconfig" to config,too.

**other config method:**

referece: [https://blog.csdn.net/ffmxnjm/article/details/72933915][https_blog.csdn.net_ffmxnjm_article_details_72933915] LINUX内核目录文件说明以及配置并编译内核的方法

make config - 纯文本界面 (最常用的选择)。  
make menuconfig - 基于文本彩色菜单和单选列表。这个选项可以加快开发者开发速度。需要安装ncurses(ncurses-devel)。  
make nconfig - 基于文本的彩色菜单。需要安装curses (libcdk5-dev)。  
make xconfig - QT/X-windows 界面。需要安装QT。  
make gconfig - Gtk/X-windows 界面。需要安装GTK。  
make oldconfig - 纯文本界面，但是其默认的问题是基于已有的本地配置文件。  
make silentoldconfig - 和oldconfig相似，但是不会显示配置文件中已有的问题的回答。  
make olddefconfig -和silentoldconfig相似，但有些问题已经以它们的默认值选择。  
make defconfig - 这个选项将会创建一份以当前系统架构为基础的默认设置文件。  
make $\{PLATFORM\}defconfig - 创建一份使用arch/$ARCH/configs/$\{PLATFORM\}defconfig中的值的配置文件。  
make allyesconfig - 这个选项将会创建一份尽可能多的问题回答都为‘yes’的配置文件。  
make allmodconfig - 这个选项将会创建一份将尽可能多的内核部分配置为模块的配置文件。  
注意：内核代码可以放进内核自身，也可以成为一个模块。例如，用户可以将蓝牙驱动作为一个模块加入(独立于内核)，或者直接放到内核栗，或者完全不加蓝牙驱动。当代码放到内核本身时，内核将会请求更多的内存并且启动会花费更长的时间。然而，内核会执行的更好。如果代码作为模块加入，代码将会一直存在于硬盘上直到被需要时加载。接着模块被加载到内存中。这可以减少内核的内存使用并减少启动的时间。然而，因为内核和模块在内存上相互独立所以会影响内核的性能。另一种选择是不添加一些代码。举例来说，内核开发人员假如知道系统永远都不会使用蓝牙设备，因此这个驱动就可以不加到内核中。这提升了内核的性能。然而，如果用户之后需要蓝牙设备，那么他么需要安装蓝牙模块或者升级内核才行。

**make allnoconfig** \- 这个选项只会生成内核所必要代码的配置文件。它对尽可能多的问题都回答no。这有时会导致内核无法工作在为编译该内核的硬件上。  
make randconfig - 这个选项会对内核选项随机选择（译注：这是做什么用途的？！）。  
make localmodconfig - 这个选项会根据当前已加载模块列表和系统配置来生成配置文件。  
make localyesconfig - 将所有可装载模块（LKM）都编译进内核(译者注：这里与原文 ‘This will set all module options to yes - most (or all) of the kernel will not be in modules’的意思不同，作者也作出了解释：13307)&\#12290;

（end）

[20181107114801910.png]: /images/20210920/1dc418adc79e41ee8c37ae4c19cddbd3.png
[https_blog.csdn.net_ffmxnjm_article_details_72933915]: https://blog.csdn.net/ffmxnjm/article/details/72933915