From patchwork Tue Jan 2 06:47:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 759753 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DCBDCC8C4; Tue, 2 Jan 2024 06:50:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LekdIHCl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE451C433C7; Tue, 2 Jan 2024 06:50:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1704178223; bh=27H198mfFlg5dXLC/oksp1mcpXEcuJokQDeBYx0aQoY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LekdIHClfL7jGei4zMmYx7yDpqNzFa2vP41Ce7SFYItp8gfUQdUpWnX2Npp2Y14Vj NAFhqo1z54zhnN5Kt4cEkBdD1kg18yjObC/MLNDPAAQIb38m/5leZdC81QjrARzgSi 49HQ+EbrqW8Q4WBk2mDbdf5IshVRs1h9CW4ecEz4rpll99jfFaRrOoRerFKKRbZve7 wnSCF+q7X3scrxXMaoR/7qSlT6AyxL3uyr4ZEUg4r9/madgi7jvNX+L5hK/UO37lG6 8s4wJK67VNVruoC2b3k3jO1oQ2lGVK/wt/JnAlvQLfyuuzTz9STtkqZ2h4hGxrBKKs k0mt6rGUOIu1w== From: Eric Biggers To: linux-crypto@vger.kernel.org, linux-riscv@lists.infradead.org, Jerry Shih Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel , Heiko Stuebner , Phoebe Chen , hongrong.hsu@sifive.com, Paul Walmsley , Palmer Dabbelt , Albert Ou , Andy Chiu Subject: [RFC PATCH 04/13] RISC-V: add TOOLCHAIN_HAS_VECTOR_CRYPTO Date: Tue, 2 Jan 2024 00:47:30 -0600 Message-ID: <20240102064743.220490-5-ebiggers@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240102064743.220490-1-ebiggers@kernel.org> References: <20240102064743.220490-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers 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 --- arch/riscv/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 95a2a06acc6a6..bf275a713b1b5 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -526,20 +526,27 @@ config RISCV_ISA_V_DEFAULT_ENABLE If you don't know what to do here, say Y. config TOOLCHAIN_HAS_ZBB bool default y depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zbb) depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_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 depends on MMU depends on RISCV_ALTERNATIVE default y help Adds support to dynamically detect the presence of the ZBB extension (basic bit manipulation) and enable its usage.