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RISC-V: add TOOLCHAIN_HAS_VECTOR_CRYPTO

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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: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240122002024.27477-3-ebiggers@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Eric Biggers 2024-01-21 16:19:13 -08:00 committed by Palmer Dabbelt
parent df513ed49f
commit 34ca4ec628
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1 changed files with 7 additions and 0 deletions
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arch/riscv/Kconfig
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@ -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