Unverified Commit 34ca4ec6 authored by Eric Biggers's avatar Eric Biggers Committed by Palmer Dabbelt
Browse files

RISC-V: add TOOLCHAIN_HAS_VECTOR_CRYPTO 



Add a kconfig symbol that indicates whether the toolchain supports the
vector crypto extensions.  This is needed by the RISC-V crypto code.

Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240122002024.27477-3-ebiggers@kernel.org


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent df513ed4

arch/riscv/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -578,6 +578,13 @@ config TOOLCHAIN_HAS_ZBB 
	depends on LLD_VERSION >= 150000 || LD_VERSION >= 23900

	depends on AS_HAS_OPTION_ARCH



# This symbol indicates that the toolchain supports all v1.0 vector crypto

# extensions, including Zvk*, Zvbb, and Zvbc.  LLVM added all of these at once.

# binutils added all except Zvkb, then added Zvkb.  So we just check for Zvkb.

config TOOLCHAIN_HAS_VECTOR_CRYPTO

	def_bool $(as-instr, .option arch$(comma) +zvkb)

	depends on AS_HAS_OPTION_ARCH



config RISCV_ISA_ZBB

	bool "Zbb extension support for bit manipulation instructions"

	depends on TOOLCHAIN_HAS_ZBB