From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 10 Oct 2022 07:55:54 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1ohllb-0032i4-7m for lore@lore.pengutronix.de; Mon, 10 Oct 2022 07:55:54 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ohllZ-0005yX-2U for lore@pengutronix.de; Mon, 10 Oct 2022 07:55:53 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dFMFqggTtLYhWKQRZUBMou2/B2WmjxEBLnPFN2nvwtE=; b=e3tBFG7lusqWyWwdimwju0AkoB Vm7t+fDt8OwGIvxDfaleuHvKgp7ZfGQ8M75hdTBQUIa4YkQp+XtrsxVnf4WlwTbkVRaEuqyWTA3KC /029T74NQNmo1ag2XxSbN8OXDm/+NInyosIyqqRuRfAaWA4Wkv3yIPRBYPKbox6GUS/UFlq+ILEEt 9RYnREu5idE0QC5hoHlIIb4H8tUU/gwmdxRikrL/dzwYBRGiiy6lYN0koeEe3GCVVfWauo/aOHh6H q0LDAgmlWC0RZEZSFPkvtcryNKVCO+sghWjdom7PIsFqpPH3oAB1WzpBDwjy6j7RtoZDwAyWl0TwI 0fH2Gk1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ohlil-00H7yV-Kj; Mon, 10 Oct 2022 05:52:59 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ohlig-00H7xr-MT for barebox@lists.infradead.org; Mon, 10 Oct 2022 05:52:56 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ohlia-0005nh-N5; Mon, 10 Oct 2022 07:52:48 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1ohlia-00080z-Fh; Mon, 10 Oct 2022 07:52:48 +0200 Date: Mon, 10 Oct 2022 07:52:48 +0200 To: Johannes Zink Cc: barebox@lists.infradead.org Message-ID: <20221010055248.GB986@pengutronix.de> References: <20220930133702.518949-1-j.zink@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220930133702.518949-1-j.zink@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221009_225254_774389_6371103E X-CRM114-Status: GOOD ( 25.23 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.6 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH master] ARM: i.MX7: enable caches when booted over USB X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Fri, Sep 30, 2022 at 03:37:02PM +0200, Johannes Zink wrote: > From: Ahmad Fatoum > > BootROM on the i.MX7 doesn't set the SMP bit when booted > over serial download. This leads to vastly worse performance > when doing memory-heavy operations in a USB-booted system, > as the caches are not utilized. Example running md5sum over > a 25M image in ramfs: > > without patch: 10796ms > with patch: 457ms > > This issue isn't unique to the i.MX7, but exists for the i.MX6UL as > well, which also has the Cortex-A7 as CPU. Like with > imx6ul_cpu_lowlevel_init(), adapt imx7_cpu_lowlevel_init() to avoid this > slow down. > > Signed-off-by: Ahmad Fatoum > Signed-off-by: Johannes Zink > --- > arch/arm/mach-imx/cpu_init.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/mach-imx/cpu_init.c b/arch/arm/mach-imx/cpu_init.c > index ea36215419..ede2076102 100644 > --- a/arch/arm/mach-imx/cpu_init.c > +++ b/arch/arm/mach-imx/cpu_init.c > @@ -49,7 +49,7 @@ void imx6ul_cpu_lowlevel_init(void) > > void imx7_cpu_lowlevel_init(void) > { > - arm_cpu_lowlevel_init(); > + cortex_a7_lowlevel_init(); Why do you remove the call to arm_cpu_lowlevel_init() here? Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |