Lines Matching +full:riscv +full:- +full:v +full:- +full:spec
1 # SPDX-License-Identifier: GPL-2.0-only
4 # see Documentation/kbuild/kconfig-language.rst.
13 config RISCV config
168 # https://github.com/llvm/llvm-project/commit/6ab8927931851bb42b2c93a00801dc499d7d9b1e
175 depends on $(cc-option,-fpatchable-function-entry=8)
185 # VA_BITS - PAGE_SHIFT - 3
198 # set if we are running in S-mode and can use SBI calls
205 bool "MMU-based Paged Memory Management Support"
208 Select if you want MMU-based virtualised addressing space
280 This enables function pointer support for non-standard noncoherent
284 def_bool $(as-instr,.insn r 51$(comma) 0$(comma) 0$(comma) t0$(comma) t0$(comma) zero)
289 depends on $(as-instr, .option arch$(comma) +m)
290 depends on !$(as-instr, .option arch$(comma) -i)
292 source "arch/riscv/Kconfig.socs"
293 source "arch/riscv/Kconfig.errata"
298 bool "Allow configurations that result in non-portable kernels"
300 RISC-V kernel binaries are compatible between all known systems
355 bool "Symmetric Multi-Processing"
368 bool "Multi-core scheduler support"
371 Multi-core scheduler support improves the CPU scheduler's decision
372 making when dealing with multi-core CPU chips at a cost of slightly
376 int "Maximum number of CPUs (2-512)"
385 bool "Support for hot-pluggable CPUs"
414 Enable NUMA (Non-Uniform Memory Access) support.
459 Allow kernel to detect the Svnapot ISA-extension dynamically at boot
463 of contiguous virtual-to-physical translations for a naturally
464 aligned power-of-2 (NAPOT) granularity larger than the base 4KB page
473 bool "Svpbmt extension support for supervisor mode page-based memory types"
479 ISA-extension (Supervisor-mode: page-based memory types) and
486 The Svpbmt extension is only available on 64-bit cpus.
493 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64iv)
494 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32iv)
524 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zbb)
525 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zbb)
540 of bit-specific operations (count bit population, sign extending,
546 bool "Zicbom extension support for non-coherent DMA operation"
558 non-coherent DMA support on devices that need it.
578 depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zihintpause)
579 depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zihintpause)
584 …# https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6…
588 Binutils-2.38 and GCC-12.1.0 bumped the default ISA spec to the newer
594 newer ISA spec to version 2.2, relax the check to binutils >= 2.36.
601 # https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
606 -march. This option causes an older ISA spec compatible with these older
608 as passing zicsr and zifencei to -march.
614 Say N here if you want to disable all floating-point related procedure
629 int "Kernel stack size (in power-of-two numbers of page size)" if VMAP_STACK && EXPERT
649 deprecated in future once legacy M-mode software are no longer in use.
660 scheme. It should be only enabled for M-mode Linux or platforms relying
697 bool "Kernel support for 32-bit U-mode"
701 This option enables support for a 32-bit U-mode running under a 64-bit
702 kernel at S-mode. riscv32-specific components such as system calls,
706 If you want to execute 32-bit userspace applications, say Y.
716 Since RISCV uses the RELA relocation format, this requires a
732 random u64 value in /chosen/kaslr-seed at kernel entry.
746 string "Built-in kernel command line"
749 are provided at run-time, during boot. However, there are cases
753 When that occurs, it is possible to define a built-in command
757 prompt "Built-in command line usage" if CMDLINE != ""
760 Choose how the kernel will handle the provided built-in command
766 Use the built-in command line as fallback in case we get nothing
772 The command-line arguments provided during boot will be
773 appended to the built-in command line. This is useful in
780 Always use the built-in command line, even if we get one during
805 by UEFI firmware (such as non-volatile variables, realtime
811 …def_bool $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=tp -mstack-protector-…
829 explicitly specified to run early relocations of read-write data
833 bool "Kernel Execute-In-Place from ROM"
840 Execute-In-Place allows the kernel to run from non-volatile storage
843 to RAM. Read-write sections, such as the data section and stack,
853 ROM memory will be arch/riscv/boot/xipImage.
871 bool "Permit falling back to parsing riscv,isa for extension support by default"
874 Parsing the "riscv,isa" devicetree property has been deprecated and
877 "riscv,isa" property if the replacements are not found.
883 Please see the dt-binding, located at
884 Documentation/devicetree/bindings/riscv/extensions.yaml for details
885 on the replacement properties, "riscv,isa-base" and
886 "riscv,isa-extensions".
928 source "arch/riscv/kvm/Kconfig"