From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by spool.mail.gandi.net (Postfix) with ESMTPS id 548EC9410A2 for ; Mon, 6 Nov 2023 03:30:22 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=8ib6zAlM7phmj9OsBqAH+gihA10qp8ZokXH22DX9WTM=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Transfer-Encoding; s=20140610; t=1699241421; v=1; b=gt6DO0myerXM2fLC9ZEvtUYARywkPG7YjHNQkJPF0zCzhqg7j3slSd0vNWPnBAF+6nEMzsN4 bDv0j8wn2TVWM7mTL3jCO0A+VSh61JFmSd+z3aPA+4NdZuDXoQz6bwG5FtwPY5bMc05+DI/Upsf X7s/CbRtXIGD4uX73ivILgFM= X-Received: by 127.0.0.2 with SMTP id 2zwZYY7687511xZ8hvVESiIl; Sun, 05 Nov 2023 19:30:21 -0800 X-Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by mx.groups.io with SMTP id smtpd.web11.46528.1699241420000616253 for ; Sun, 05 Nov 2023 19:30:20 -0800 X-Received: from loongson.cn (unknown [10.2.9.245]) by gateway (Coremail) with SMTP id _____8BxyerIXUhloTc3AA--.33204S3; Mon, 06 Nov 2023 11:30:16 +0800 (CST) X-Received: from code-server.gen (unknown [10.2.9.245]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Cxzt7FXUhljRI6AA--.63078S2; Mon, 06 Nov 2023 11:30:13 +0800 (CST) From: "Chao Li" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Jiewen Yao , Jordan Justen , Gerd Hoffmann , Xianglai Li , Bibo Mao Subject: [edk2-devel] [PATCH v2 23/30] OvmfPkg/LoongArchVirt: Add PeiServiceTablePointerLib Date: Mon, 6 Nov 2023 11:30:12 +0800 Message-Id: <20231106033012.2294174-1-lichao@loongson.cn> In-Reply-To: <20231106032521.2251143-1-lichao@loongson.cn> References: <20231106032521.2251143-1-lichao@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Cxzt7FXUhljRI6AA--.63078S2 X-CM-SenderInfo: xolfxt3r6o00pqjv00gofq/1tbiAQAGCGVFqihSvgBRsQ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,lichao@loongson.cn List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: 3SpjQDQSKcFcLRK4sGJP8P2px7686176AA= Content-Transfer-Encoding: 8bit X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=gt6DO0my; dmarc=none; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io Use a register to save PeiServiceTable pointer. This Library provides PeiServiceTable pointer saveing and retrieval serivces. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Ard Biesheuvel Cc: Jiewen Yao Cc: Jordan Justen Cc: Gerd Hoffmann Signed-off-by: Chao Li Co-authored-by: Xianglai Li Co-authored-by: Bibo Mao --- .../PeiServicesTablePointer.c | 75 +++++++++++++++++++ .../PeiServicesTablePointerLib.inf | 31 ++++++++ 2 files changed, 106 insertions(+) create mode 100644 OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c create mode 100644 OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf diff --git a/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c b/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c new file mode 100644 index 0000000000..dcbcb50131 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c @@ -0,0 +1,75 @@ +/** @file + PEI Services Table Pointer Library. + + Copyright (c) 2023 Loongson Technology Corporation Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include +#include +#include +#include +#include + +/** + Caches a pointer PEI Services Table. + + Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer + in a platform specific manner. + + If PeiServicesTablePointer is NULL, then ASSERT (). + + @param PeiServicesTablePointer The address of PeiServices pointer. +**/ +VOID +EFIAPI +SetPeiServicesTablePointer ( + IN CONST EFI_PEI_SERVICES **PeiServicesTablePointer + ) +{ + CsrWrite (LOONGARCH_CSR_KS0, (UINTN)PeiServicesTablePointer); +} + +/** + Retrieves the cached value of the PEI Services Table pointer. + + Returns the cached value of the PEI Services Table pointer in a CPU specific manner + as specified in the CPU binding section of the Platform Initialization Pre-EFI + Initialization Core Interface Specification. + + If the cached PEI Services Table pointer is NULL, then ASSERT (). + + @return The pointer to PeiServices. +**/ +CONST EFI_PEI_SERVICES ** +EFIAPI +GetPeiServicesTablePointer ( + VOID + ) +{ + return (CONST EFI_PEI_SERVICES **)(CsrRead (LOONGARCH_CSR_KS0)); +} + +/** +Perform CPU specific actions required to migrate the PEI Services Table +pointer from temporary RAM to permanent RAM. + +For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes +immediately preceding the Interrupt Descriptor Table (IDT) in memory. +For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes +immediately preceding the Interrupt Descriptor Table (IDT) in memory. +For Itanium and ARM CPUs, a the PEI Services Table Pointer is stored in +a dedicated CPU register. This means that there is no memory storage +associated with storing the PEI Services Table pointer, so no additional +migration actions are required for Itanium or ARM CPUs. +**/ +VOID +EFIAPI +MigratePeiServicesTablePointer ( + VOID + ) +{ + return; +} diff --git a/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf b/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf new file mode 100644 index 0000000000..274cb2f781 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf @@ -0,0 +1,31 @@ +## @file +# PEI Services Table Pointer Library. +# +# Copyright (c) 2023 Loongson Technology Corporation Limited. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = PeiServicesTablePointerLib + FILE_GUID = 098B0DB0-AD01-8886-D409-90CBC7E89154 + MODULE_TYPE = PEIM + VERSION_STRING = 1.0 + LIBRARY_CLASS = PeiServicesTablePointerLib|PEIM PEI_CORE SEC + +# +# VALID_ARCHITECTURES = LOONGARCH64 +# + +[Sources] + PeiServicesTablePointer.c + +[Packages] + MdePkg/MdePkg.dec + +[LibraryClasses] + BaseLib + DebugLib + +[Pcd] -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#110727): https://edk2.groups.io/g/devel/message/110727 Mute This Topic: https://groups.io/mt/102413901/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-