From patchwork Thu Sep 13 08:13:36 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 1450831 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (unknown [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id F093A3FE79 for ; Thu, 13 Sep 2012 08:27:46 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TC4ZP-0005Ir-7J; Thu, 13 Sep 2012 08:14:43 +0000 Received: from mailout2.samsung.com ([203.254.224.25]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TC4Z9-0005HD-Jr for linux-arm-kernel@lists.infradead.org; Thu, 13 Sep 2012 08:14:29 +0000 Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MAA00L2C46GO2V0@mailout2.samsung.com> for linux-arm-kernel@lists.infradead.org; Thu, 13 Sep 2012 17:14:12 +0900 (KST) X-AuditID: cbfee61a-b7fba6d000007d5f-f5-505195d46732 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id EA.81.32095.4D591505; Thu, 13 Sep 2012 17:14:12 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MAA00F0A477MEF1@mmp1.samsung.com> for linux-arm-kernel@lists.infradead.org; Thu, 13 Sep 2012 17:14:12 +0900 (KST) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Subject: [PATCH 3/5] ARM: EXYNOS: Add support for secure monitor calls Date: Thu, 13 Sep 2012 10:13:36 +0200 Message-id: <1347524018-19301-4-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1347524018-19301-1-git-send-email-t.figa@samsung.com> References: <1347524018-19301-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMJMWRmVeSWpSXmKPExsVy+t9jAd0rUwMDDG5cFrbY9PgaqwOjx+Yl 9QGMUVw2Kak5mWWpRfp2CVwZ/1fvYSvYJVmx+9RD9gbGRyJdjJwcEgImEn/m7WWDsMUkLtxb D2RzcQgJLGKUOPLkACOEs5lJomXSV7AqNgE1ic8Nj8BsEQFVic9tC9hBipgFVjJKbHw3Dywh LOAmcer0H1YQmwWoqL35FTOIzSvgJHH//xqodfIST+/3gdmcAs4SHx5sYQSxhYBqthx+xjKB kXcBI8MqRtHUguSC4qT0XEO94sTc4tK8dL3k/NxNjGCvP5PawbiyweIQowAHoxIPb+bzgAAh 1sSy4srcQ4wSHMxKIrzq3YEBQrwpiZVVqUX58UWlOanFhxilOViUxHmdztkFCAmkJ5akZqem FqQWwWSZODilGhhXsxkJSbAqN8T9VxT2f6146OOby8eNw2M/L3uyVSa22UNTe+WOWWdv8us9 bPz5zL6qOONRoJZYwlmby1JCV2x7NrBeq/Gu+KQR2jxvHp/0pl/nl7++/+LZD+tPR6csDHK4 /yK3SfvL3Ds7z8fxCu1cmZu1ylDxUqryj2qlgjeHbycw7VswYQm7EktxRqKhFnNRcSIAgsNC xvYBAAA= X-Spam-Note: CRM114 invocation failed X-Spam-Score: -7.3 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [203.254.224.25 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.4 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: kgene.kim@samsung.com, linux@arm.linux.org.uk, arnd@arndb.de, t.figa@samsung.com, kyungmin.park@samsung.com, olof@lixom.net, linux-arm-kernel@lists.infradead.org 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 Some boards use secure monitor calls to communicate with secure firmware. This patch adds exynos_smc function which uses smc assembly instruction to do secure monitor calls. This is a follow-up on the patch by Kyungmin Park: [PATCH v5 2/2] ARM: EXYNOS: SMC instruction (aka firmware) support http://thread.gmane.org/gmane.linux.ports.arm.kernel/183608/focus=184109 Signed-off-by: Kyungmin Park Signed-off-by: Tomasz Figa --- arch/arm/mach-exynos/Makefile | 5 +++++ arch/arm/mach-exynos/exynos-smc.S | 22 ++++++++++++++++++++++ arch/arm/mach-exynos/smc.h | 31 +++++++++++++++++++++++++++++++ 3 files changed, 58 insertions(+) create mode 100644 arch/arm/mach-exynos/exynos-smc.S create mode 100644 arch/arm/mach-exynos/smc.h diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile index ee7fde9..997864b 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -30,6 +30,11 @@ obj-$(CONFIG_EXYNOS4_MCT) += mct.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o +obj-$(CONFIG_ARCH_EXYNOS) += exynos-smc.o + +plus_sec := $(call as-instr,.arch_extension sec,+sec) +AFLAGS_exynos-smc.o :=-Wa,-march=armv7-a$(plus_sec) + # machine support obj-$(CONFIG_MACH_SMDKC210) += mach-smdkv310.o diff --git a/arch/arm/mach-exynos/exynos-smc.S b/arch/arm/mach-exynos/exynos-smc.S new file mode 100644 index 0000000..2e27aa3 --- /dev/null +++ b/arch/arm/mach-exynos/exynos-smc.S @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2012 Samsung Electronics. + * + * Copied from omap-smc.S Copyright (C) 2010 Texas Instruments, Inc. + * + * This program is free software,you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + +/* + * Function signature: void exynos_smc(u32 cmd, u32 arg1, u32 arg2, u32 arg3) + */ + +ENTRY(exynos_smc) + stmfd sp!, {r4-r11, lr} + dsb + smc #0 + ldmfd sp!, {r4-r11, pc} +ENDPROC(exynos_smc) diff --git a/arch/arm/mach-exynos/smc.h b/arch/arm/mach-exynos/smc.h new file mode 100644 index 0000000..e972390 --- /dev/null +++ b/arch/arm/mach-exynos/smc.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2012 Samsung Electronics. + * + * EXYNOS - SMC Call + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARCH_EXYNOS_SMC_H +#define __ASM_ARCH_EXYNOS_SMC_H + +#define SMC_CMD_INIT (-1) +#define SMC_CMD_INFO (-2) +/* For Power Management */ +#define SMC_CMD_SLEEP (-3) +#define SMC_CMD_CPU1BOOT (-4) +#define SMC_CMD_CPU0AFTR (-5) +/* For CP15 Access */ +#define SMC_CMD_C15RESUME (-11) +/* For L2 Cache Access */ +#define SMC_CMD_L2X0CTRL (-21) +#define SMC_CMD_L2X0SETUP1 (-22) +#define SMC_CMD_L2X0SETUP2 (-23) +#define SMC_CMD_L2X0INVALL (-24) +#define SMC_CMD_L2X0DEBUG (-25) + +extern void exynos_smc(u32 cmd, u32 arg1, u32 arg2, u32 arg3); + +#endif