From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF20CC2D0DB for ; Tue, 28 Jan 2020 12:39:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C7922173E for ; Tue, 28 Jan 2020 12:39:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726264AbgA1Mjk (ORCPT ); Tue, 28 Jan 2020 07:39:40 -0500 Received: from foss.arm.com ([217.140.110.172]:56258 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725852AbgA1Mjj (ORCPT ); Tue, 28 Jan 2020 07:39:39 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D666C106F; Tue, 28 Jan 2020 04:39:38 -0800 (PST) Received: from p8cg001049571a15.arm.com (unknown [10.163.1.151]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 768BC3F52E; Tue, 28 Jan 2020 04:39:36 -0800 (PST) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , Suzuki K Poulose , linux-kernel@vger.kernel.org Subject: [PATCH 2/6] arm64/cpufeature: Add DIT and CSV2 feature bits in ID_PFR0 register Date: Tue, 28 Jan 2020 18:09:05 +0530 Message-Id: <1580215149-21492-3-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580215149-21492-1-git-send-email-anshuman.khandual@arm.com> References: <1580215149-21492-1-git-send-email-anshuman.khandual@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable DIT and CSV2 feature bits in ID_PFR0 register as per ARM DDI 0487E.a specification. Except RAS and AMU, all other feature bits are now enabled. Cc: Catalin Marinas Cc: Will Deacon Cc: Suzuki K Poulose Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/sysreg.h | 3 +++ arch/arm64/kernel/cpufeature.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 054aab7ebf1b..469d61c8fabf 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -718,6 +718,9 @@ #define ID_ISAR6_DP_SHIFT 4 #define ID_ISAR6_JSCVT_SHIFT 0 +#define ID_PFR0_DIT_SHIFT 24 +#define ID_PFR0_CSV2_SHIFT 16 + #define ID_PFR2_SSBS_SHIFT 4 #define ID_PFR2_CSV3_SHIFT 0 diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index c1e837fc8f97..9e4dab15c608 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -341,6 +341,8 @@ static const struct arm64_ftr_bits ftr_id_isar6[] = { }; static const struct arm64_ftr_bits ftr_id_pfr0[] = { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_PFR0_DIT_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_PFR0_CSV2_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0), /* State3 */ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0), /* State2 */ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* State1 */ -- 2.20.1