From patchwork Fri Jan 15 06:55:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8038681 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 D58719FC69 for ; Fri, 15 Jan 2016 06:59:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0D02D20513 for ; Fri, 15 Jan 2016 06:59:56 +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 0A36020519 for ; Fri, 15 Jan 2016 06:59:55 +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 1aJyJZ-0002r0-Pt; Fri, 15 Jan 2016 06:56:53 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aJyJX-0002oz-EA for xen-devel@lists.xen.org; Fri, 15 Jan 2016 06:56:51 +0000 Received: from [85.158.137.68] by server-13.bemta-3.messagelabs.com id 60/36-31443-23898965; Fri, 15 Jan 2016 06:56:50 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-14.tower-31.messagelabs.com!1452841003!15998590!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 61411 invoked from network); 15 Jan 2016 06:56:49 -0000 Received: from szxga01-in.huawei.com (HELO szxga01-in.huawei.com) (58.251.152.64) by server-14.tower-31.messagelabs.com with RC4-SHA encrypted SMTP; 15 Jan 2016 06:56:49 -0000 Received: from 172.24.1.51 (EHLO SZXEML429-HUB.china.huawei.com) ([172.24.1.51]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DDB64111; Fri, 15 Jan 2016 14:56:32 +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, 15 Jan 2016 14:56:25 +0800 From: Shannon Zhao To: , , , Date: Fri, 15 Jan 2016 14:55:26 +0800 Message-ID: <1452840929-19612-14-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1452840929-19612-1-git-send-email-zhaoshenglong@huawei.com> References: <1452840929-19612-1-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=0001.0A020202.56989822.0064, 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: 7c499ce6c54741980060851c00398894 Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, linux-efi@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, xen-devel@lists.xen.org, julien.grall@citrix.com, shannon.zhao@linaro.org, peter.huangpeng@huawei.com Subject: [Xen-devel] [PATCH v2 13/16] ARM: XEN: Set EFI_PARAVIRT if Xen supports EFI 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 Check if there is "uefi" node in the DT. If so, set EFI_PARAVIRT flag. Signed-off-by: Shannon Zhao --- arch/arm/xen/enlighten.c | 23 +++++++++++++++++++++++ arch/arm64/kernel/efi.c | 5 +++++ 2 files changed, 28 insertions(+) diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 5d0fe68..485e117 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -31,6 +31,7 @@ #include #include #include +#include #include @@ -248,6 +249,19 @@ static int __init fdt_find_xen_node(unsigned long node, const char *uname, return 0; } +static int __init fdt_find_uefi_node(unsigned long node, const char *uname, + int depth, void *data) +{ + bool *found = data; + + if (depth != 2 || strcmp(uname, "uefi") != 0) + return 0; + + *found = true; + + return 1; +} + /* * see Documentation/devicetree/bindings/arm/xen.txt for the * documentation of the Xen Device Tree format. @@ -255,6 +269,8 @@ static int __init fdt_find_xen_node(unsigned long node, const char *uname, #define GRANT_TABLE_PHYSADDR 0 void __init xen_early_init(void) { + bool uefi_found = false; + of_scan_flat_dt(fdt_find_xen_node, NULL); if (!xen_node.found) { pr_debug("No Xen support\n"); @@ -279,6 +295,13 @@ void __init xen_early_init(void) if (!console_set_on_cmdline && !xen_initial_domain()) add_preferred_console("hvc", 0, NULL); + + if (IS_ENABLED(CONFIG_XEN_EFI)) { + /* Check if Xen support UEFI */ + of_scan_flat_dt(fdt_find_uefi_node, &uefi_found); + if (uefi_found) + set_bit(EFI_PARAVIRT, &efi.flags); + } } static int __init xen_guest_init(void) diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 4eeb171..16c6b72 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -288,6 +288,11 @@ static int __init arm64_enable_runtime_services(void) return 0; } + if (efi_enabled(EFI_PARAVIRT)) { + pr_info("EFI runtime services access via paravirt.\n"); + return -1; + } + pr_info("Remapping and enabling EFI services.\n"); mapsize = memmap.map_end - memmap.map;