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Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/arch/riscv/Kconfig

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# SPDX-License-Identifier: GPL-2.0-only # # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.rst. # config 64BIT bool config 32BIT bool config RISCV def_bool y # even on 32-bit, physical (and DMA) addresses are > 32-bits select PHYS_ADDR_T_64BIT select OF select OF_EARLY_FLATTREE select OF_IRQ select ARCH_HAS_BINFMT_FLAT select ARCH_WANT_FRAME_POINTERS select CLONE_BACKWARDS select COMMON_CLK select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select GENERIC_SMP_IDLE_THREAD select GENERIC_ATOMIC64 if !64BIT select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP_FILTER select HAVE_ASM_MODVERSIONS select HAVE_MEMBLOCK_NODE_MAP select HAVE_DMA_CONTIGUOUS select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_PERF_EVENTS select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP select HAVE_SYSCALL_TRACEPOINTS select IRQ_DOMAIN select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE select HAVE_ARCH_TRACEHOOK select HAVE_PCI select MODULES_USE_ELF_RELA if MODULES select MODULE_SECTIONS if MODULES select THREAD_INFO_IN_TASK select PCI_DOMAINS_GENERIC if PCI select PCI_MSI if PCI select RISCV_TIMER select GENERIC_IRQ_MULTI_HANDLER select GENERIC_ARCH_TOPOLOGY select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_MMIOWB select HAVE_EBPF_JIT if 64BIT select EDAC_SUPPORT select ARCH_HAS_GIGANTIC_PAGE select ARCH_WANT_HUGE_PMD_SHARE if 64BIT select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select HAVE_ARCH_MMAP_RND_BITS select HAVE_COPY_THREAD_TLS config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT default 8 # max bits determined by the following formula: # VA_BITS - PAGE_SHIFT - 3 config ARCH_MMAP_RND_BITS_MAX default 24 if 64BIT # SV39 based default 17 config MMU def_bool y config ZONE_DMA32 bool default y if 64BIT config VA_BITS int default 32 if 32BIT default 39 if 64BIT config PA_BITS int default 34 if 32BIT default 56 if 64BIT config PAGE_OFFSET hex default 0xC0000000 if 32BIT && MAXPHYSMEM_2GB default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB config ARCH_FLATMEM_ENABLE def_bool y config ARCH_SPARSEMEM_ENABLE def_bool y depends on MMU select SPARSEMEM_STATIC if 32BIT && SPARSEMEM select SPARSEMEM_VMEMMAP_ENABLE if 64BIT config ARCH_SELECT_MEMORY_MODEL def_bool ARCH_SPARSEMEM_ENABLE config ARCH_WANT_GENERAL_HUGETLB def_bool y config SYS_SUPPORTS_HUGETLBFS def_bool y config STACKTRACE_SUPPORT def_bool y config TRACE_IRQFLAGS_SUPPORT def_bool y config GENERIC_BUG def_bool y depends on BUG select GENERIC_BUG_RELATIVE_POINTERS if 64BIT config GENERIC_BUG_RELATIVE_POINTERS bool config GENERIC_CALIBRATE_DELAY def_bool y config GENERIC_CSUM def_bool y config GENERIC_HWEIGHT def_bool y config FIX_EARLYCON_MEM def_bool y config PGTABLE_LEVELS int default 3 if 64BIT default 2 source "arch/riscv/Kconfig.socs" menu "Platform type" choice prompt "Base ISA" default ARCH_RV64I help This selects the base ISA that this kernel will target and must match the target platform. config ARCH_RV32I bool "RV32I" select 32BIT select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 config ARCH_RV64I bool "RV64I" select 64BIT select ARCH_SUPPORTS_INT128 if GCC_VERSION >= 50000 select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS select SWIOTLB endchoice # We must be able to map all physical memory into the kernel, but the compiler # is still a bit more efficient when generating code if it's setup in a manner # such that it can only map 2GiB of memory. choice prompt "Kernel Code Model" default CMODEL_MEDLOW if 32BIT default CMODEL_MEDANY if 64BIT config CMODEL_MEDLOW bool "medium low code model" config CMODEL_MEDANY bool "medium any code model" endchoice config MODULE_SECTIONS bool select HAVE_MOD_ARCH_SPECIFIC choice prompt "Maximum Physical Memory" default MAXPHYSMEM_2GB if 32BIT default MAXPHYSMEM_2GB if 64BIT && CMODEL_MEDLOW default MAXPHYSMEM_128GB if 64BIT && CMODEL_MEDANY config MAXPHYSMEM_2GB bool "2GiB" config MAXPHYSMEM_128GB depends on 64BIT && CMODEL_MEDANY bool "128GiB" endchoice config SMP bool "Symmetric Multi-Processing" help This enables support for systems with more than one CPU. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, single processor machines. On a single processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "8" choice prompt "CPU Tuning" default TUNE_GENERIC config TUNE_GENERIC bool "generic" endchoice config RISCV_ISA_C bool "Emit compressed instructions when building Linux" default y help Adds "C" to the ISA subsets that the toolchain is allowed to emit when building Linux, which results in compressed instructions in the Linux binary. If you don't know what to do here, say Y. menu "supported PMU type" depends on PERF_EVENTS config RISCV_BASE_PMU bool "Base Performance Monitoring Unit" def_bool y help A base PMU that serves as a reference implementation and has limited feature of perf. It can run on any RISC-V machines so serves as the fallback, but this option can also be disable to reduce kernel size. endmenu config FPU bool "FPU support" default y help Say N here if you want to disable all floating-point related procedure in the kernel. If you don't know what to do here, say Y. endmenu menu "Kernel features" source "kernel/Kconfig.hz" config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via prctl(PR_SET_SECCOMP), it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. endmenu menu "Boot options" config CMDLINE string "Built-in kernel command line" help For most platforms, the arguments for the kernel's command line are provided at run-time, during boot. However, there are cases where either no arguments are being provided or the provided arguments are insufficient or even invalid. When that occurs, it is possible to define a built-in command line here and choose how the kernel should use it later on. choice prompt "Built-in command line usage" if CMDLINE != "" default CMDLINE_FALLBACK help Choose how the kernel will handle the provided built-in command line. config CMDLINE_FALLBACK bool "Use bootloader kernel arguments if available" help Use the built-in command line as fallback in case we get nothing during boot. This is the default behaviour. config CMDLINE_EXTEND bool "Extend bootloader kernel arguments" help The command-line arguments provided during boot will be appended to the built-in command line. This is useful in cases where the provided arguments are insufficient and you don't want to or cannot modify them. config CMDLINE_FORCE bool "Always use the default kernel command string" help Always use the built-in command line, even if we get one during boot. This is useful in case you need to override the provided command line on systems where you don't have or want control over it. endchoice endmenu menu "Power management options" source "kernel/power/Kconfig" endmenu

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