From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7556EC388F7 for ; Thu, 5 Nov 2020 12:57:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 28E9820936 for ; Thu, 5 Nov 2020 12:57:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730980AbgKEM5Q (ORCPT ); Thu, 5 Nov 2020 07:57:16 -0500 Received: from foss.arm.com ([217.140.110.172]:60094 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730922AbgKEM5I (ORCPT ); Thu, 5 Nov 2020 07:57:08 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5754314BF; Thu, 5 Nov 2020 04:57:07 -0800 (PST) Received: from donnerap.arm.com (donnerap.cambridge.arm.com [10.1.195.35]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AD18D3F719; Thu, 5 Nov 2020 04:57:05 -0800 (PST) From: Andre Przywara To: Will Deacon , Catalin Marinas , Ard Biesheuvel , Russell King Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, Sudeep Holla , Mark Rutland , Mark Brown , Lorenzo Pieralisi , Linus Walleij Subject: [PATCH v2 1/5] firmware: smccc: Add SMCCC TRNG function call IDs Date: Thu, 5 Nov 2020 12:56:52 +0000 Message-Id: <20201105125656.25259-2-andre.przywara@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201105125656.25259-1-andre.przywara@arm.com> References: <20201105125656.25259-1-andre.przywara@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ard Biesheuvel The ARM architected TRNG firmware interface, described in ARM spec DEN0098, define an ARM SMCCC based interface to a true random number generator, provided by firmware. Add the definitions of the SMCCC functions as defined by the spec. Signed-off-by: Ard Biesheuvel Signed-off-by: Andre Przywara --- include/linux/arm-smccc.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index f860645f6512..62c54234576c 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -102,6 +102,37 @@ ARM_SMCCC_OWNER_STANDARD_HYP, \ 0x21) +/* TRNG entropy source calls (defined by ARM DEN0098) */ +#define ARM_SMCCC_TRNG_VERSION \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x50) + +#define ARM_SMCCC_TRNG_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x51) + +#define ARM_SMCCC_TRNG_GET_UUID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x52) + +#define ARM_SMCCC_TRNG_RND32 \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x53) + +#define ARM_SMCCC_TRNG_RND64 \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x53) + /* * Return codes defined in ARM DEN 0070A * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C -- 2.17.1