From patchwork Sat Jan 23 09:19:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8096221 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 DC0D1BEEE5 for ; Sat, 23 Jan 2016 09:25:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DDCEE205E5 for ; Sat, 23 Jan 2016 09:25:47 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [50.57.142.19]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DC32E205B1 for ; Sat, 23 Jan 2016 09:25:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aMuPF-0007dN-1b; Sat, 23 Jan 2016 09:22:53 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aMuPD-0007cm-69 for xen-devel@lists.xen.org; Sat, 23 Jan 2016 09:22:51 +0000 Received: from [193.109.254.147] by server-10.bemta-14.messagelabs.com id C3/E7-25438-A6643A65; Sat, 23 Jan 2016 09:22:50 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-4.tower-27.messagelabs.com!1453540964!17943928!1 X-Originating-IP: [119.145.14.65] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTE5LjE0NS4xNC42NSA9PiA3NzQ2Mw==\n X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 33590 invoked from network); 23 Jan 2016 09:22:49 -0000 Received: from szxga02-in.huawei.com (HELO szxga02-in.huawei.com) (119.145.14.65) by server-4.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 23 Jan 2016 09:22:49 -0000 Received: from 172.24.1.47 (EHLO szxeml427-hub.china.huawei.com) ([172.24.1.47]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DAK81954; Sat, 23 Jan 2016 17:22:25 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml427-hub.china.huawei.com (10.82.67.182) with Microsoft SMTP Server id 14.3.235.1; Sat, 23 Jan 2016 17:22:14 +0800 From: Shannon Zhao To: Date: Sat, 23 Jan 2016 17:19:57 +0800 Message-ID: <1453540813-15764-6-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1453540813-15764-1-git-send-email-zhaoshenglong@huawei.com> References: <1453540813-15764-1-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=0001.0A090202.56A34651.00D4, 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: 49f596e89b80c0d3a2c5a5bb0ea80329 Cc: ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, peter.huangpeng@huawei.com, julien.grall@citrix.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v4 05/21] arm/acpi: Add basic ACPI initialization X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 --- 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 0ba601e..c15a09d 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -749,6 +750,9 @@ 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(); + end_boot_allocator(); vm_init();