From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 13 Jun 2025 11:44:52 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uQ0xw-006p1n-1W for lore@lore.pengutronix.de; Fri, 13 Jun 2025 11:44:52 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uQ0xv-0006Pj-UT for lore@pengutronix.de; Fri, 13 Jun 2025 11:44:52 +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=LhLLgKbVCaYYiuPAciVrBkGknypvdejNeYy/Nsx79MU=; b=SUVuY0BQktlJIHkeben3EuH2Xi RJKvhcqkNhsZ0U6QPoJ2+h/VTwoEbXlHFcNUvWHpQ9KwlQiX5fjnY3CnuP0TnaHifHojEyReHfSXs MAKXE3TSSLjSKfzz1YfASqgQ7gt6ts8buAbfQPhUdYONa7cJpAi1oiLzY82QWUSLNTloHYWVFIQbZ /bgKmpDf+NLDOrgluzvmXMf7ryEPhLoW8l0mT0SG7ryV0YvOTH0GszTGTXLSzTUw+Xqk8KtZh7Y0q dvb4JUdZdnqTFW0zWAx6DgaW/pc91zDQn/+kh6G4XjSmdyqRC8mstg4qsgOFI1q67aQgVKBJSE3DV 6Wvm5hLg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uQ0xY-0000000Fx72-1DAA; Fri, 13 Jun 2025 09:44:28 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uQ0dX-0000000FuCX-41E2 for barebox@lists.infradead.org; Fri, 13 Jun 2025 09:23:49 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=[127.0.0.1]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1uQ0dW-0000ND-Nf; Fri, 13 Jun 2025 11:23:46 +0200 Message-ID: <5609257a-08a0-42b3-a2f9-6b752e652051@pengutronix.de> Date: Fri, 13 Jun 2025 11:23:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Sascha Hauer , BAREBOX References: <20250613-arm-mmu-xn-ro-v1-0-60f05c6e7b4b@pengutronix.de> <20250613-arm-mmu-xn-ro-v1-4-60f05c6e7b4b@pengutronix.de> From: Ahmad Fatoum Content-Language: en-US, de-DE, de-BE In-Reply-To: <20250613-arm-mmu-xn-ro-v1-4-60f05c6e7b4b@pengutronix.de> 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-20250613_022347_999936_C620B269 X-CRM114-Status: GOOD ( 13.20 ) 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.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 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 4/7] ARM: MMU: map memory for barebox proper pagewise X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On 6/13/25 09:58, Sascha Hauer wrote: > Map the remainder of the memory explicitly with two level page tables. This is > the place where barebox proper ends at. In barebox proper we'll remap the code > segments readonly/executable and the ro segments readonly/execute never. For this > we need the memory being mapped pagewise. We can't do the split up from section > wise mapping to pagewise mapping later because that would require us to do > a break-before-make sequence which we can't do when barebox proper is running > at the location being remapped. > > Signed-off-by: Sascha Hauer Reviewed-by: Ahmad Fatoum Just a small thing to change below: > uint32_t *ttb = (uint32_t *)arm_mem_ttb(membase + memsize); > + unsigned long barebox_size = SZ_8M, optee_start; SZ_8M is overwritten later, so should be dropped here. Cheers, Ahmad -- 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 |