From patchwork Sun Feb 28 11:19:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8445991 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8BC4F9F52D for ; Sun, 28 Feb 2016 11:30:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 929B3202E9 for ; Sun, 28 Feb 2016 11:30:39 +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 A8542202E6 for ; Sun, 28 Feb 2016 11:30:38 +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 1aZzXH-0008Gu-GJ; Sun, 28 Feb 2016 11:29:15 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1aZzXG-0008Gh-W7 for xen-devel@lists.xen.org; Sun, 28 Feb 2016 11:29:15 +0000 Received: from [193.109.254.147] by server-11.bemta-14.messagelabs.com id A6/EB-02989-A0AD2D65; Sun, 28 Feb 2016 11:29:14 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-10.tower-27.messagelabs.com!1456658949!27307722!1 X-Originating-IP: [119.145.14.66] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTE5LjE0NS4xNC42NiA9PiA4NTI3\n X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 8832 invoked from network); 28 Feb 2016 11:29:12 -0000 Received: from szxga03-in.huawei.com (HELO szxga03-in.huawei.com) (119.145.14.66) by server-10.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 28 Feb 2016 11:29:12 -0000 Received: from 172.24.1.49 (EHLO szxeml432-hub.china.huawei.com) ([172.24.1.49]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BWS97753; Sun, 28 Feb 2016 19:20:32 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml432-hub.china.huawei.com (10.82.67.209) with Microsoft SMTP Server id 14.3.235.1; Sun, 28 Feb 2016 19:20:21 +0800 From: Shannon Zhao To: Date: Sun, 28 Feb 2016 19:19:05 +0800 Message-ID: <1456658360-16080-10-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1456658360-16080-1-git-send-email-zhaoshenglong@huawei.com> References: <1456658360-16080-1-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=0001.0A090201.56D2D800.009E, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 219aef6ea6a5ee9fbb97d60eb9bb270a Cc: peter.huangpeng@huawei.com, zhaoshenglong@huawei.com, stefano.stabellini@citrix.com, ian.campbell@citrix.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v4 09/24] arm/acpi: Prepare STAO table for Dom0 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 Create STAO table for Dom0. This table is used to tell Dom0 whether it should ignore UART defined in SPCR table or the ACPI namespace names. Look at below url for details: http://wiki.xenproject.org/mediawiki/images/0/02/Status-override-table.pdf Signed-off-by: Parth Dixit Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini --- xen/arch/arm/domain_build.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index e373165..53cddb7 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1357,6 +1357,43 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) } #ifdef CONFIG_ACPI +static int acpi_create_stao(struct domain *d, struct membank tbl_add[]) +{ + struct acpi_table_header *table = NULL; + struct acpi_table_stao *stao = NULL; + u32 table_size = sizeof(struct acpi_table_stao); + u32 offset = acpi_get_table_offset(tbl_add, TBL_STAO); + acpi_status status; + u8 *base_ptr, checksum; + + /* Copy OEM and ASL compiler fields of some table, here use MADT */ + status = acpi_get_table(ACPI_SIG_MADT, 0, &table); + + if ( ACPI_FAILURE(status) ) + { + const char *msg = acpi_format_exception(status); + + printk("Failed to get MADT table, %s\n", msg); + return -EINVAL; + } + + base_ptr = d->arch.efi_acpi_table + offset; + ACPI_MEMCPY(base_ptr, table, sizeof(struct acpi_table_header)); + + stao = (struct acpi_table_stao *)base_ptr; + ACPI_MEMCPY(stao->header.signature, ACPI_SIG_STAO, 4); + stao->header.revision = 1; + stao->header.length = table_size; + stao->ignore_uart = 1; + checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, stao), table_size); + stao->header.checksum -= checksum; + + tbl_add[TBL_STAO].start = d->arch.efi_acpi_gpa + offset; + tbl_add[TBL_STAO].size = table_size; + + return 0; +} + static int acpi_create_madt(struct domain *d, struct membank tbl_add[]) { struct acpi_table_header *table = NULL; @@ -1512,6 +1549,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) if ( rc != 0 ) return rc; + rc = acpi_create_stao(d, tbl_add); + if ( rc != 0 ) + return rc; + return 0; } #else