From patchwork Tue Feb 13 17:34:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugeniy Paltsev X-Patchwork-Id: 873062 X-Patchwork-Delegate: alexey.brodkin@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 3zgqfl6LzRz9t3C for ; Wed, 14 Feb 2018 04:44:31 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 9725EC21FBB; Tue, 13 Feb 2018 17:39:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 89B84C21F8A; Tue, 13 Feb 2018 17:37:40 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 9FADBC21FCD; Tue, 13 Feb 2018 17:35:27 +0000 (UTC) Received: from smtprelay.synopsys.com (smtprelay4.synopsys.com [198.182.47.9]) by lists.denx.de (Postfix) with ESMTPS id 076C5C21FA4 for ; Tue, 13 Feb 2018 17:35:24 +0000 (UTC) Received: from mailhost.synopsys.com (mailhost2.synopsys.com [10.13.184.66]) by smtprelay.synopsys.com (Postfix) with ESMTP id B797624E02C5 for ; Tue, 13 Feb 2018 09:35:22 -0800 (PST) Received: from localhost.internal.synopsys.com (unknown [10.121.3.43]) by mailhost.synopsys.com (Postfix) with ESMTP id 72FB7348; Tue, 13 Feb 2018 09:35:21 -0800 (PST) From: Eugeniy Paltsev To: uboot-snps-arc@synopsys.com Date: Tue, 13 Feb 2018 20:34:50 +0300 Message-Id: <20180213173451.6317-18-Eugeniy.Paltsev@synopsys.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20180213173451.6317-1-Eugeniy.Paltsev@synopsys.com> References: <20180213173451.6317-1-Eugeniy.Paltsev@synopsys.com> Cc: u-boot@lists.denx.de, Alexey Brodkin , Eugeniy Paltsev Subject: [U-Boot] [PATCH 17/18] ARC: cache: don't invalidate SLC in invalidate_icache_all X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" We don't want to invalidate SLC in invalidate_icache_all as we can lose some data from SLC (especially if L1 D$ is disabled) because SLC is shared for data and instructions. Signed-off-by: Eugeniy Paltsev --- arch/arc/lib/cache.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c index 4e93ab9..907e9e3 100644 --- a/arch/arc/lib/cache.c +++ b/arch/arc/lib/cache.c @@ -326,8 +326,11 @@ void invalidate_icache_all(void) { __ic_entire_invalidate(); - if (is_isa_arcv2()) - __slc_entire_op(OP_INV); + /* + * We don't to invalidate SLC here as we can lose some data from + * SLC (especially if L1 D$ is disabled) because SLC is shared for + * data and instructions. + */ } int dcache_status(void)