From patchwork Sun Jun 7 23:33:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prakhar Srivastava X-Patchwork-Id: 11592383 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 21D13175A for ; Sun, 7 Jun 2020 23:33:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F39C120810 for ; Sun, 7 Jun 2020 23:33:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="ABlBM4P7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727919AbgFGXdg (ORCPT ); Sun, 7 Jun 2020 19:33:36 -0400 Received: from linux.microsoft.com ([13.77.154.182]:34106 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727786AbgFGXdf (ORCPT ); Sun, 7 Jun 2020 19:33:35 -0400 Received: from prsriva-linux.hsd1.wa.comcast.net (c-24-19-135-168.hsd1.wa.comcast.net [24.19.135.168]) by linux.microsoft.com (Postfix) with ESMTPSA id 8F40A20B71CC; Sun, 7 Jun 2020 16:33:33 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 8F40A20B71CC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1591572814; bh=qqLM5q0pqz0yfc3O++Tr6hw7BmJ7c10HldflmnR0q10=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ABlBM4P784LLcJRDNr8OnWTm3BQ50AkH9FQVDvh+/fOXjneDNKHeC+y4VhphakRUO 8+7rjsxxpkWY1bs6/Xp0CUnQ70qskcDEe9/8PJEgWp0BFxgYSNKdzcEsDp3q8rbv6p YaN0VLnHeMjc6sSto9pNWodp9ZGhNmPTlAbG98no= From: Prakhar Srivastava To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, robh+dt@kernel.org, frowand.list@gmail.com, zohar@linux.ibm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, pasha.tatashin@soleen.com, allison@lohutok.net, kstewart@linuxfoundation.org, takahiro.akashi@linaro.org, tglx@linutronix.de, vincenzo.frascino@arm.com, mark.rutland@arm.com, masahiroy@kernel.org, james.morse@arm.com, bhsharma@redhat.com, mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr, gregkh@linuxfoundation.org, nramas@linux.microsoft.com, prsriva@linux.microsoft.com, tusharsu@linux.microsoft.com, balajib@linux.microsoft.com Subject: [v1 PATCH 2/2] Add Documentation regarding the ima-kexec-buffer node in the chosen node documentation Date: Sun, 7 Jun 2020 16:33:23 -0700 Message-Id: <20200607233323.22375-3-prsriva@linux.microsoft.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200607233323.22375-1-prsriva@linux.microsoft.com> References: <20200607233323.22375-1-prsriva@linux.microsoft.com> MIME-Version: 1.0 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org Add Documentation regarding the ima-kexec-buffer node in the chosen node documentation Signed-off-by: Prakhar Srivastava --- Documentation/devicetree/bindings/chosen.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index 45e79172a646..a15f70c007ef 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -135,3 +135,20 @@ e.g. linux,initrd-end = <0x82800000>; }; }; + +linux,ima-kexec-buffer +---------------------- + +This property(currently used by powerpc, arm64) holds the memory range, +the address and the size, of the IMA measurement logs that are being carried +over to the kexec session. + +/ { + chosen { + linux,ima-kexec-buffer = <0x9 0x82000000 0x0 0x00008000>; + }; +}; + +This porperty does not represent real hardware, but the memory allocated for +carrying the IMA measurement logs. The address and the suze are expressed in +#address-cells and #size-cells, respectively of the root node.