From patchwork Fri Feb 8 23:17:36 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 2118931 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 7B312DFE75 for ; Fri, 8 Feb 2013 23:22:00 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U3xE2-0001dQ-AW; Fri, 08 Feb 2013 23:19:22 +0000 Received: from ducie-dc1.codethink.co.uk ([37.128.190.40]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1U3xCk-00018N-ID for linux-arm-kernel@lists.infradead.org; Fri, 08 Feb 2013 23:18:08 +0000 Received: by ducie-dc1.codethink.co.uk (Postfix, from userid 1002) id EFBF946C6E8; Fri, 8 Feb 2013 23:18:00 +0000 (GMT) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ducie-dc1.codethink.co.uk X-Spam-Level: X-Spam-Status: No, score=-2.9 required=6.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 Received: from rainbowdash.ducie.codethink.co.uk (rainbowdash.dyn.ducie.codethink.co.uk [192.168.24.216]) by ducie-dc1.codethink.co.uk (Postfix) with ESMTPS id F10FC46C57F; Fri, 8 Feb 2013 23:17:59 +0000 (GMT) Received: from ben by rainbowdash.ducie.codethink.co.uk with local (Exim 4.80) (envelope-from ) id 1U3xCi-0006XT-UJ; Fri, 08 Feb 2013 23:18:00 +0000 From: Ben Dooks To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 06/17] ARM: fixup head for atag verification Date: Fri, 8 Feb 2013 23:17:36 +0000 Message-Id: <1360365467-25056-7-git-send-email-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1360365467-25056-1-git-send-email-ben.dooks@codethink.co.uk> References: <1360365467-25056-1-git-send-email-ben.dooks@codethink.co.uk> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130208_181802_857931_75048FC2 X-CRM114-Status: GOOD ( 10.21 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Ben Dooks X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org If we booted LE but running BE8, ensure we read ATAGs data from head code in the correct mode. Signed-off-by: Ben Dooks --- arch/arm/kernel/head-common.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S index 854bd22..4eb53b2 100644 --- a/arch/arm/kernel/head-common.S +++ b/arch/arm/kernel/head-common.S @@ -21,6 +21,12 @@ #define OF_DT_MAGIC 0xedfe0dd0 /* 0xd00dfeed in big-endian */ #endif +#ifdef CONFIG_CPU_BE8_BOOT_LE +#define BE8_LE(x...) x +#else +#define BE8_LE(x...) +#endif + /* * Exception handling. Something went wrong and we can't proceed. We * ought to tell the user, but since we don't have any guarantee that @@ -53,10 +59,12 @@ __vet_atags: cmp r5, r6 beq 2f #endif +BE8_LE( rev r5, r5 ) cmp r5, #ATAG_CORE_SIZE @ is first tag ATAG_CORE? cmpne r5, #ATAG_CORE_SIZE_EMPTY bne 1f ldr r5, [r2, #4] +BE8_LE( rev r5, r5 ) ldr r6, =ATAG_CORE cmp r5, r6 bne 1f