From patchwork Fri Sep 7 16:55:28 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 1424431 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 C0D78DF283 for ; Fri, 7 Sep 2012 16:58:59 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TA1qh-0004Kx-14; Fri, 07 Sep 2012 16:56:07 +0000 Received: from service87.mimecast.com ([91.220.42.44]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TA1qO-0004E5-H8 for linux-arm-kernel@lists.infradead.org; Fri, 07 Sep 2012 16:55:49 +0000 Received: from cam-owa1.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.21]) by service87.mimecast.com; Fri, 07 Sep 2012 17:55:46 +0100 Received: from e102391-lin.cambridge.arm.com ([10.1.255.212]) by cam-owa1.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.0); Fri, 7 Sep 2012 17:55:43 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/7] ARM: opcodes: add __ERET/__MSR_ELR_HYP instruction encoding Date: Fri, 7 Sep 2012 17:55:28 +0100 Message-Id: <1347036934-8519-2-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1347036934-8519-1-git-send-email-marc.zyngier@arm.com> References: <1347036934-8519-1-git-send-email-marc.zyngier@arm.com> X-OriginalArrivalTime: 07 Sep 2012 16:55:43.0878 (UTC) FILETIME=[9EA2CA60:01CD8D19] X-MC-Unique: 112090717554603301 X-Spam-Note: CRM114 invocation failed 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 ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [91.220.42.44 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Dave Martin , Nicolas Pitre 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 Enabling boot from HYP mode requires the use of some more virt-specific instructions ("eret" and "msr elr_hyp, reg"). Add the necessary encoding to asm/opcode-virt.h. Signed-off-by: Marc Zyngier --- arch/arm/include/asm/opcodes-virt.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/include/asm/opcodes-virt.h b/arch/arm/include/asm/opcodes-virt.h index b85665a..efcfdf9 100644 --- a/arch/arm/include/asm/opcodes-virt.h +++ b/arch/arm/include/asm/opcodes-virt.h @@ -26,4 +26,14 @@ 0xF7E08000 | (((imm16) & 0xF000) << 4) | ((imm16) & 0x0FFF) \ ) +#define __ERET __inst_arm_thumb32( \ + 0xE160006E, \ + 0xF3DE8F00 \ +) + +#define __MSR_ELR_HYP(regnum) __inst_arm_thumb32( \ + 0xE12EF300 | regnum, \ + 0xF3808E30 | (regnum << 16) \ +) + #endif /* ! __ASM_ARM_OPCODES_VIRT_H */