From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 06 Jun 2023 11:07:35 +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 1q6SfB-00Cqkv-2h for lore@lore.pengutronix.de; Tue, 06 Jun 2023 11:07:35 +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 1q6Sf8-0002FK-4o for lore@pengutronix.de; Tue, 06 Jun 2023 11:07:34 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gOk1sJzG8hXMmWUEbzCeGH8PCmyZwrOIo+F4r654Iug=; b=isd82hRgaNEb0gDZ2tuj7mcVUn VyMLwHYU7QN0Dj8QrMv7ePeIFPh6lqi+BVv31RTiZOB2VkqJ7aQ4svpfE4PzwzPEFMPJUXKiG3wTJ BuOtlgbaubNIopVR+ndK0XBtgBdUExUfngz9rhZRJ7c6sN+U3hsOshmWk7KerYFQAHCO+RyYRy37f SXj0L4wxGSAqxu3TJcWaBaHfB9R8ux1s5gvQwYitcsGmABk/dr1DC12/EV4Brzri6zDDsJ8iFR9vm szqZrB1r+IBxysTY/QK0vgpDkyaRJfiG//asYxlCUS/FsnyxVR/KKlaPFnr1BYnsVEnZDtjWMsF1o rsnOJnXw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q6Sdz-000wM1-1G; Tue, 06 Jun 2023 09:06:23 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q6Sdw-000wLR-1B for barebox@lists.infradead.org; Tue, 06 Jun 2023 09:06:21 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=[127.0.0.1]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1q6Sdv-00023H-4Z; Tue, 06 Jun 2023 11:06:19 +0200 Message-ID: <100685f9-a2f4-afbd-b47d-f661cca704dd@pengutronix.de> Date: Tue, 6 Jun 2023 11:06:18 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Content-Language: en-US To: Denis Orlov , barebox@lists.infradead.org References: <20230605202634.42175-1-denorl2009@gmail.com> <20230605202634.42175-13-denorl2009@gmail.com> From: Ahmad Fatoum In-Reply-To: <20230605202634.42175-13-denorl2009@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230606_020620_405238_436562F8 X-CRM114-Status: GOOD ( 17.15 ) 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=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 12/17] MIPS: enable 64-bit kernel segment addressing on CONFIG_64BIT 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 05.06.23 22:10, Denis Orlov wrote: > This allows using addresses from XKPHYS segment. This is needed as we > access hardware registers through this segment in 64BIT configuration, > but this also lets us peek/poke bigger memory address space using > commands that work with memory on 64BIT. > > With this commit, malta with 64-bit CPU finally boots into 64BIT barebox > in QEMU. > > Signed-off-by: Denis Orlov Reviewed-by: Ahmad Fatoum > --- > arch/mips/boot/start.S | 2 ++ > arch/mips/include/asm/pbl_macros.h | 11 +++++++++++ > 2 files changed, 13 insertions(+) > > diff --git a/arch/mips/boot/start.S b/arch/mips/boot/start.S > index 5f134f9ae9..30828ad9ef 100644 > --- a/arch/mips/boot/start.S > +++ b/arch/mips/boot/start.S > @@ -26,6 +26,8 @@ EXPORT(_start) > > mips_disable_interrupts > > + mips64_enable_64bit_addressing > + > copy_to_link_location _start > > stack_setup > diff --git a/arch/mips/include/asm/pbl_macros.h b/arch/mips/include/asm/pbl_macros.h > index 1fba690c8c..ce169a1554 100644 > --- a/arch/mips/include/asm/pbl_macros.h > +++ b/arch/mips/include/asm/pbl_macros.h > @@ -152,6 +152,17 @@ > .set pop > .endm > > + .macro mips64_enable_64bit_addressing > +#ifdef CONFIG_64BIT > + .set push > + .set noreorder > + mfc0 k0, CP0_STATUS > + or k0, ST0_KX > + mtc0 k0, CP0_STATUS > + .set pop > +#endif > + .endm > + > .macro mips_barebox_10h > .set push > .set noreorder -- 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 |