From patchwork Sun Jul 9 15:42:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 13305882 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 116E9EB64DC for ; Sun, 9 Jul 2023 15:43:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230519AbjGIPnD (ORCPT ); Sun, 9 Jul 2023 11:43:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230293AbjGIPnC (ORCPT ); Sun, 9 Jul 2023 11:43:02 -0400 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C764114; Sun, 9 Jul 2023 08:42:55 -0700 (PDT) Received: from i53875a50.versanet.de ([83.135.90.80] helo=phil.fritz.box) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qIWYg-0002yG-Ge; Sun, 09 Jul 2023 17:42:46 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: aou@eecs.berkeley.edu, heiko@sntech.de, herbert@gondor.apana.org.au, davem@davemloft.net, conor.dooley@microchip.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, christoph.muellner@vrull.eu, ebiggers@kernel.org, Heiko Stuebner Subject: [PATCH v6 1/3] RISC-V: expose Zbc as Kconfig option Date: Sun, 9 Jul 2023 17:42:41 +0200 Message-Id: <20230709154243.1582671-2-heiko@sntech.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230709154243.1582671-1-heiko@sntech.de> References: <20230709154243.1582671-1-heiko@sntech.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Heiko Stuebner Similar to Zbb add a Zbc option to allow making further functionality depend on it. Signed-off-by: Heiko Stuebner --- arch/riscv/Kconfig | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 4c07b9189c86..cb5bd47c50c9 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -531,6 +531,29 @@ config RISCV_ISA_ZBB If you don't know what to do here, say Y. +config TOOLCHAIN_HAS_ZBC + bool + default y + depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zbc) + depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zbc) + depends on LLD_VERSION >= 150000 || LD_VERSION >= 23900 + depends on AS_HAS_OPTION_ARCH + +config RISCV_ISA_ZBC + bool "Zbc extension support for bit manipulation instructions" + depends on TOOLCHAIN_HAS_ZBC + depends on MMU + depends on RISCV_ALTERNATIVE + default y + help + Adds support to dynamically detect the presence of the ZBC + extension (carry-less multiplication) and enable its usage. + + The Zbc extension provides instructions clmul, clmulh and clmulr + to accelerate carry-less multiplications. + + If you don't know what to do here, say Y. + config RISCV_ISA_ZICBOM bool "Zicbom extension support for non-coherent DMA operation" depends on MMU