From patchwork Fri Feb 26 06:22:42 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8431921 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 98A9CC0553 for ; Fri, 26 Feb 2016 06:26:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A6CFC20145 for ; Fri, 26 Feb 2016 06:26:55 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A6764203A0 for ; Fri, 26 Feb 2016 06:26:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1aZBpO-0006Ob-7r; Fri, 26 Feb 2016 06:24:38 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1aZBpL-0006Jk-T1 for xen-devel@lists.xen.org; Fri, 26 Feb 2016 06:24:36 +0000 Received: from [85.158.137.68] by server-15.bemta-3.messagelabs.com id EB/1A-03172-2AFEFC65; Fri, 26 Feb 2016 06:24:34 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-5.tower-31.messagelabs.com!1456467867!25193831!1 X-Originating-IP: [58.251.152.64] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 58539 invoked from network); 26 Feb 2016 06:24:33 -0000 Received: from szxga01-in.huawei.com (HELO szxga01-in.huawei.com) (58.251.152.64) by server-5.tower-31.messagelabs.com with RC4-SHA encrypted SMTP; 26 Feb 2016 06:24:33 -0000 Received: from 172.24.1.47 (EHLO SZXEML429-HUB.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFG21594; Fri, 26 Feb 2016 14:24:03 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by SZXEML429-HUB.china.huawei.com (10.82.67.184) with Microsoft SMTP Server id 14.3.235.1; Fri, 26 Feb 2016 14:23:52 +0800 From: Shannon Zhao To: Date: Fri, 26 Feb 2016 14:22:42 +0800 Message-ID: <1456467780-8476-5-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1456467780-8476-1-git-send-email-zhaoshenglong@huawei.com> References: <1456467780-8476-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.56CFEF84.008A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 9479a48afc461a4d0e9d35800a3c6535 Cc: peter.huangpeng@huawei.com, stefano.stabellini@citrix.com, ian.campbell@citrix.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v5 04/22] arm/acpi: Add basic ACPI initialization X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Shannon Zhao acpi_boot_table_init() will be called in start_xen to get the RSDP and all the table pointers. With this patch, we can get ACPI boot-time tables from firmware on ARM64. Signed-off-by: Naresh Bhat Signed-off-by: Parth Dixit Signed-off-by: Shannon Zhao Acked-by: Stefano Stabellini --- xen/arch/arm/acpi/Makefile | 1 + xen/arch/arm/acpi/boot.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++ xen/arch/arm/setup.c | 4 ++++ 3 files changed, 63 insertions(+) create mode 100644 xen/arch/arm/acpi/boot.c diff --git a/xen/arch/arm/acpi/Makefile b/xen/arch/arm/acpi/Makefile index b5be22d..196c40a 100644 --- a/xen/arch/arm/acpi/Makefile +++ b/xen/arch/arm/acpi/Makefile @@ -1 +1,2 @@ obj-y += lib.o +obj-y += boot.o diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c new file mode 100644 index 0000000..1570f7e --- /dev/null +++ b/xen/arch/arm/acpi/boot.c @@ -0,0 +1,58 @@ +/* + * ARM Specific Low-Level ACPI Boot Support + * + * Copyright (C) 2001, 2002 Paul Diefenbaugh + * Copyright (C) 2001 Jun Nakajima + * Copyright (C) 2014, Naresh Bhat + * Copyright (C) 2015, Shannon Zhao + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include +#include + +#include + +/* + * acpi_boot_table_init() called from setup_arch(), always. + * 1. find RSDP and get its address, and then find XSDT + * 2. extract all tables and checksums them all + * + * return value: (currently ignored) + * 0: success + * !0: failure + * + * We can parse ACPI boot-time tables such as FADT, MADT after + * this function is called. + */ +int __init acpi_boot_table_init(void) +{ + int error; + + /* Initialize the ACPI boot-time table parser. */ + error = acpi_table_init(); + if ( error ) + { + disable_acpi(); + return error; + } + + return 0; +} diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index e6b689e..fee5385 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -755,6 +756,9 @@ void __init start_xen(unsigned long boot_phys_offset, setup_mm(fdt_paddr, fdt_size); + /* Parse the ACPI tables for possible boot-time configuration */ + acpi_boot_table_init(); + vm_init(); dt_unflatten_host_device_tree();