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| author | Eric Biggers <ebiggers@google.com> | 2024-01-21 16:19:13 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-22 17:55:16 -0800 |
| commit | 34ca4ec628deb4f00da38c7d73486b8499e30dea (patch) | |
| tree | ed1726bfa3ce03ef627c22a242ef8dd0e9401676 /arch/riscv/Kconfig | |
| parent | df513ed49f0073ce1778eb469ab5db44bceade30 (diff) | |
| download | lwn-34ca4ec628deb4f00da38c7d73486b8499e30dea.tar.gz lwn-34ca4ec628deb4f00da38c7d73486b8499e30dea.zip | |
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: 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>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bffbd869a068..5613b2bb686e 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -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 |