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dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=XoKOaHU+55j/RsJgQ3bamR6jiKfLWNKy2QcBljb/fY4=; b=nbyQntkHJucrSRt+Vq0sxKN2sm Tn+v8n8DOoRzlPSama9EvLGirCQSr7gK4AF6FhFk6bDnb6yDoSfkieSgcbdx2vJphI0itvBhkQAg0 VqQEp0nCqPCy6SOLWRark8z1Ts+8WNS7ctWZQ+K/UADpNZ21WxfZ8W6xptk5yf5OR36uqYXqvcPoW KlOJTJvNcySxL3fvzCRcsEmNbdEA7FTXN59M+6xFVKhkIio4PDZneTXd818HdpX9iTHq3oOR4btiC aCTdN+zKp9NvR5A3IoallZO/KQDdKun1yTgTlF0Chh/tX375VXO5HGK+I7azYVxhk6mvyJ1JnD9l1 5r6vJbgw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iS5w9-0007c1-53; Tue, 05 Nov 2019 21:00:25 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iS5ux-00057l-2m for linux-arm-kernel@lists.infradead.org; Tue, 05 Nov 2019 20:59:12 +0000 Received: from e123331-lin.home (lfbn-mar-1-643-104.w90-118.abo.wanadoo.fr [90.118.215.104]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DAE8C222C1; Tue, 5 Nov 2019 20:59:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572987550; bh=Oq4qxjNlIhJPIuOSCqUS5bvKK6mzMrpUrieH1mqMXb8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=afAkR2OxPZ1zF1q6QlEdZ6FI8JCNQdHkX7LWnJgp2K2EfSUJG/CSR35/4Wf8qNWyE FTX75ixCQmipQGqnpu0ptpYkCo1H3buyiQ4jj5l9+/lsToJrhpYO+RW/QSrLnO5yGB xSQflcdHohhFu6qhNhSnUU8SCRJdX0N+C1922VQI= From: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org Subject: [PATCH for-stable-v4.4 04/53] ARM: 8480/2: arm64: add implementation for arm-smccc Date: Tue, 5 Nov 2019 21:57:57 +0100 Message-Id: <20191105205846.1394-5-ardb@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191105205846.1394-1-ardb@kernel.org> References: <20191105205846.1394-1-ardb@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191105_125911_172371_5FFDF2AF X-CRM114-Status: GOOD ( 17.26 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Florian Fainelli , Tony Lindgren , Catalin Marinas , Jens Wiklander , Russell King , Marc Zyngier , Russell King , Will Deacon , Ard Biesheuvel MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Jens Wiklander Commit 14457459f9ca2ff8521686168ea179edc3a56a44 upstream. Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC. Acked-by: Will Deacon Signed-off-by: Jens Wiklander Signed-off-by: Russell King Signed-off-by: Ard Biesheuvel --- arch/arm64/Kconfig | 1 + arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/arm64ksyms.c | 5 +++ arch/arm64/kernel/asm-offsets.c | 3 ++ arch/arm64/kernel/smccc-call.S | 43 ++++++++++++++++++++ 5 files changed, 53 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index f18b8c26a959..644f4326b3e7 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -92,6 +92,7 @@ config ARM64 select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE select HAVE_CONTEXT_TRACKING + select HAVE_ARM_SMCCC help ARM 64-bit (AArch64) Linux support. diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 474691f8b13a..0170bea3d4ae 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -17,7 +17,7 @@ arm64-obj-y := debug-monitors.o entry.o irq.o fpsimd.o \ hyp-stub.o psci.o psci-call.o cpu_ops.o insn.o \ return_address.o cpuinfo.o cpu_errata.o \ cpufeature.o alternative.o cacheinfo.o \ - smp.o smp_spin_table.o topology.o + smp.o smp_spin_table.o topology.o smccc-call.o extra-$(CONFIG_EFI) := efi-entry.o diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c index 3b6d8cc9dfe0..678f30b05a45 100644 --- a/arch/arm64/kernel/arm64ksyms.c +++ b/arch/arm64/kernel/arm64ksyms.c @@ -26,6 +26,7 @@ #include #include #include +#include #include @@ -68,3 +69,7 @@ EXPORT_SYMBOL(test_and_change_bit); #ifdef CONFIG_FUNCTION_TRACER EXPORT_SYMBOL(_mcount); #endif + + /* arm-smccc */ +EXPORT_SYMBOL(arm_smccc_smc); +EXPORT_SYMBOL(arm_smccc_hvc); diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 087cf9a65359..7c4146a4257b 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -28,6 +28,7 @@ #include #include #include +#include int main(void) { @@ -162,5 +163,7 @@ int main(void) DEFINE(SLEEP_SAVE_SP_PHYS, offsetof(struct sleep_save_sp, save_ptr_stash_phys)); DEFINE(SLEEP_SAVE_SP_VIRT, offsetof(struct sleep_save_sp, save_ptr_stash)); #endif + DEFINE(ARM_SMCCC_RES_X0_OFFS, offsetof(struct arm_smccc_res, a0)); + DEFINE(ARM_SMCCC_RES_X2_OFFS, offsetof(struct arm_smccc_res, a2)); return 0; } diff --git a/arch/arm64/kernel/smccc-call.S b/arch/arm64/kernel/smccc-call.S new file mode 100644 index 000000000000..ae0496fa4235 --- /dev/null +++ b/arch/arm64/kernel/smccc-call.S @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2015, Linaro Limited + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include +#include + + .macro SMCCC instr + .cfi_startproc + \instr #0 + ldr x4, [sp] + stp x0, x1, [x4, #ARM_SMCCC_RES_X0_OFFS] + stp x2, x3, [x4, #ARM_SMCCC_RES_X2_OFFS] + ret + .cfi_endproc + .endm + +/* + * void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2, + * unsigned long a3, unsigned long a4, unsigned long a5, + * unsigned long a6, unsigned long a7, struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_smc) + SMCCC smc +ENDPROC(arm_smccc_smc) + +/* + * void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2, + * unsigned long a3, unsigned long a4, unsigned long a5, + * unsigned long a6, unsigned long a7, struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_hvc) + SMCCC hvc +ENDPROC(arm_smccc_hvc)