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[2620:137:e000::1:20]) by mx.google.com with ESMTP id t16-20020a1709064f1000b0098295eed929si6491866eju.998.2023.07.09.08.53.34; Sun, 09 Jul 2023 08:53:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=sntech.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232922AbjGIPnG (ORCPT + 99 others); Sun, 9 Jul 2023 11:43:06 -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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_PASS,T_SCC_BODY_TEXT_LINE, T_SPF_HELO_TEMPERROR autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1770958920629831063 X-GMAIL-MSGID: 1770958920629831063 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