Lines Matching +full:booting +full:- +full:without +full:- +full:of
1 # SPDX-License-Identifier: GPL-2.0-only
3 # For a description of the syntax of this configuration file,
4 # see Documentation/kbuild/kconfig-language.rst.
63 # LLD >= 14: https://github.com/llvm/llvm-project/issues/50505
192 select OF
215 # Shadow call stack requires rustc version 1.82+ due to use of the
216 # -Zsanitizer=shadow-call-stack flag.
226 depends on $(cc-option,-fpatchable-function-entry=8)
229 def_bool $(cc-option,-fsanitize=shadow-call-stack)
230 …# https://github.com/riscv-non-isa/riscv-elf-psabi-doc/commit/a484e843e6eeb51f0cb7b8819e50da6d2444…
231 depends on $(ld-option,--no-relax-gp)
235 # https://github.com/llvm/llvm-project/commit/6611d58f5bbcbec77262d392e2923e1d680f6985
238 # https://github.com/llvm/llvm-project/commit/bbc0f99f3bc96f1db16f649fc21dd18e5b0918f6
242 # https://github.com/llvm/llvm-project/commit/1df5ea29b43690b6622db2cad7b745607ca4de6a
244 # https://github.com/llvm/llvm-project/commit/7ffabb61a5569444b5ac9322e22e5471cc5e4a77
255 # VA_BITS - PAGE_SHIFT - 3
269 Select this option if you want to run the kernel in M-mode,
270 without the assistance of any other firmware.
272 # set if we are running in S-mode and can use SBI calls
279 bool "MMU-based Paged Memory Management Support"
282 Select if you want MMU-based virtualised addressing space
360 This enables function pointer support for non-standard noncoherent
364 def_bool $(as-instr,.insn r 51$(comma) 0$(comma) 0$(comma) t0$(comma) t0$(comma) zero)
367 # https://github.com/llvm/llvm-project/commit/9e8ed3403c191ab9c4903e8eeb8f732ff8a43cb4
369 depends on $(as-instr, .option arch$(comma) +m)
377 bool "Allow configurations that result in non-portable kernels"
379 RISC-V kernel binaries are compatible between all known systems
385 systems. Selecting any of the options guarded by NONPORTABLE will
417 # such that it can only map 2GiB of memory.
434 bool "Symmetric Multi-Processing"
438 multiprocessor machines, but will use only one CPU of a
447 bool "Multi-core scheduler support"
450 Multi-core scheduler support improves the CPU scheduler's decision
451 making when dealing with multi-core CPU chips at a cost of slightly
455 int "Maximum number of CPUs (2-512)"
464 bool "Support for hot-pluggable CPUs"
495 Enable NUMA (Non-Uniform Memory Access) support.
498 local memory of the CPU and add some more NUMA awareness to the kernel.
501 int "Maximum NUMA Nodes (as a power of 2)"
506 Specify the maximum number of NUMA Nodes available on the target
522 Allows early patching of the kernel for special errata
540 Allow kernel to detect the Svnapot ISA-extension dynamically at boot
544 of contiguous virtual-to-physical translations for a naturally
545 aligned power-of-2 (NAPOT) granularity larger than the base 4KB page
548 When optimizing for low memory consumption and for platforms without
554 bool "Svpbmt extension support for supervisor mode page-based memory types"
559 Adds support to dynamically detect the presence of the Svpbmt
560 ISA-extension (Supervisor-mode: page-based memory types) and
563 The memory type for a page contains a combination of attributes
567 The Svpbmt extension is only available on 64-bit cpus.
574 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64imv)
575 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32imv)
611 bool "Run kernel-mode Vector with kernel preemption"
616 Usually, in-kernel SIMD routines are run with preemption disabled.
620 This config allows kernel to run SIMD without explicitly disable
622 consumption due to the allocation of per-task's kernel Vector context.
630 which allow a hart to enter a low-power state or to trap to the
632 use of these instructions in the kernel when the Zawrs extension is
640 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zbb)
641 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zbb)
646 # extensions, including Zvk*, Zvbb, and Zvbc. LLVM added all of these at once.
649 def_bool $(as-instr, .option arch$(comma) +v$(comma) +zvkb)
660 of addresses that index into arrays of basic data types.
670 Adds support to dynamically detect the presence of the ZBB
674 of bit-specific operations (count bit population, sign extending,
682 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zbc)
683 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zbc)
688 bool "Zbc extension support for carry-less multiplication instructions"
694 Adds support to dynamically detect the presence of the Zbc
695 extension (carry-less multiplication) and enable its usage.
703 bool "Zicbom extension support for non-coherent DMA operation"
710 Adds support to dynamically detect the presence of the ZICBOM
715 non-coherent DMA support on devices that need it.
720 bool "Zicboz extension support for faster zeroing of memory"
724 Enable the use of the Zicboz extension (cbo.zero instruction)
727 The Zicboz extension is used for faster zeroing of memory.
733 …# https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6…
737 Binutils-2.38 and GCC-12.1.0 bumped the default ISA spec to the newer
750 # https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
754 Certain versions of clang and GCC do not support zicsr and zifencei via
755 -march. This option causes an older ISA spec compatible with these older
756 versions of clang and GCC to be passed to GAS, which has the same result
757 as passing zicsr and zifencei to -march.
763 Say N here if you want to disable all floating-point related procedure
778 int "Kernel stack size (in power-of-two numbers of page size)" if VMAP_STACK && EXPERT
783 Specify the Pages of thread stack size (from 4KB to 64KB), which also
796 This determines the level of support for unaligned accesses. This
805 During boot, the kernel will run a series of tests to determine the
806 speed of unaligned accesses. This probing will dynamically determine
807 the speed of unaligned accesses on the underlying system. If unaligned
836 enabled, this option improves the performance of the kernel on such
856 deprecated in future once legacy M-mode software are no longer in use.
859 bool "Spinwait booting method"
863 This enables support for booting Linux via spinwait method. In the
864 spinwait method, all cores randomly jump to Linux. One of the cores
867 scheme. It should be only enabled for M-mode Linux or platforms relying
868 on older firmware without SBI HSM extension. All other platforms should
869 rely on ordered booting via SBI HSM extension which gets chosen
873 NR_CPUS be large enough to contain the physical hart ID of the first
908 bool "Kernel support for 32-bit U-mode"
912 This option enables support for a 32-bit U-mode running under a 64-bit
913 kernel at S-mode. riscv32-specific components such as system calls,
917 If you want to execute 32-bit userspace applications, say Y.
954 bool "Randomize the address of the kernel image"
960 relying on knowledge of the location of kernel internals.
963 random u64 value in /chosen/kaslr-seed at kernel entry.
965 When booting via the UEFI stub, it will invoke the firmware's
968 location of the kernel Image as well.
977 string "Built-in kernel command line"
980 are provided at run-time, during boot. However, there are cases
984 When that occurs, it is possible to define a built-in command
988 prompt "Built-in command line usage"
992 Choose how the kernel will handle the provided built-in command
998 Use the built-in command line as fallback in case we get nothing
1004 The command-line arguments provided during boot will be
1005 appended to the built-in command line. This is useful in
1012 Always use the built-in command line, even if we get one during
1024 depends on OF && !XIP_KERNEL
1037 by UEFI firmware (such as non-volatile variables, realtime
1051 continue to boot on existing non-UEFI platforms.
1054 …def_bool $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=tp -mstack-protector-…
1071 This is the physical address of RAM in the system. It has to be
1072 explicitly specified to run early relocations of read-write data
1076 bool "Kernel Execute-In-Place from ROM"
1083 Execute-In-Place allows the kernel to run from non-volatile storage
1085 space since the text section of the kernel is not loaded from flash
1086 to RAM. Read-write sections, such as the data section and stack,
1118 replaced by a list of explicitly defined strings. For compatibility
1126 Please see the dt-binding, located at
1128 on the replacement properties, "riscv,isa-base" and
1129 "riscv,isa-extensions".
1132 bool "Built-in device tree"
1133 depends on OF && NONPORTABLE
1141 string "Built-in device tree source"
1144 DTS file path (without suffix, relative to arch/riscv/boot/dts)
1155 select OF