From nobody Sun Feb 8 12:39:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) client-ip=66.175.222.12; envelope-from=bounce+27952+45660+1787277+3901457@groups.io; helo=web01.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+45660+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1565837447; cv=none; d=zoho.com; s=zohoarc; b=Oe8GY1Ff41xX2HuN/qy4Fq1KbL0oRXsnFDOOjzJ4rL4WZCOLdok1SDLKjSsvzcjp+mwZVtcr6gd5OtRtvxejsYyyZcXuawuNX457DLa+Jtyc3+k2sDC1TgKlPEvsUaTPZ+jap8y4x/9GeBFrW/9S8VI2aNAb0i5ScW5fOlLv9LE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1565837447; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Id:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To:ARC-Authentication-Results; bh=ODDAvInEOzgGeJgY8wX7z9bXVltqjIWdhAQB/ynF1cE=; b=ab7ONdGh7QD5z6pmh0uC6fQC/GjYjePsBojG9L9BlY6T0wVedIgCmVJHtkM7MGV3IEFa1aHEbFQDdXcLe6+xTPQTkY30ObQxT9dVtHf0YQvll7cG34YZ5aqGM+WhBfgVoI9WqXoF+i+/g+XNhivC8826n9dLrbBv1XRaTGWC+3o= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=pass; spf=pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+45660+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) header.from= Received: from web01.groups.io (web01.groups.io [66.175.222.12]) by mx.zohomail.com with SMTPS id 1565837447005549.3756093374982; Wed, 14 Aug 2019 19:50:47 -0700 (PDT) Return-Path: X-Received: from mga12.intel.com (mga12.intel.com []) by groups.io with SMTP; Wed, 14 Aug 2019 19:50:45 -0700 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Aug 2019 19:50:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,387,1559545200"; d="scan'208";a="176753317" X-Received: from ydong10-win10.ccr.corp.intel.com ([10.239.158.133]) by fmsmga008.fm.intel.com with ESMTP; 14 Aug 2019 19:50:43 -0700 From: "Dong, Eric" To: devel@edk2.groups.io Cc: Ray Ni , Laszlo Ersek Subject: [edk2-devel] [Patch v3 4/6] UefiCpuPkg/RegisterCpuFeaturesLib: Combine CR read/write action. Date: Thu, 15 Aug 2019 10:50:34 +0800 Message-Id: <20190815025036.6780-5-eric.dong@intel.com> In-Reply-To: <20190815025036.6780-1-eric.dong@intel.com> References: <20190815025036.6780-1-eric.dong@intel.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: 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,eric.dong@intel.com Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1565837445; bh=CmxKkKKzdDdNylJ/k9l8S3nQabeN5k/nMHQiiEcv8vk=; h=Cc:Date:From:Reply-To:Subject:To; b=D3ZBBitaoW14YWEsC+SVCY9D7+w7KNNBmvVnx9Beo6B1FjK484WuFUyA8Psr8nF9e4V WzonfjN5kZTh2CgtDyCN3Na1f9AnsuuYK9R/rXBP4Fgrlxbk4rnVKN1K/EqA8I+i4S1d1 1QJg6uiQkBUrX50RMkBflK6VxqEUNIOsp60= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" Signed-off-by: Eric Dong Cc: Ray Ni Acked-by: Laszlo Ersek --- .../CpuFeaturesInitialize.c | 110 ++++++++++-------- 1 file changed, 63 insertions(+), 47 deletions(-) diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitializ= e.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c index fb0535edd6..63bc50a55f 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c @@ -744,6 +744,58 @@ LibWaitForSemaphore ( ) !=3D Value); } =20 +/** + Read / write CR value. + + @param[in] CrIndex The CR index which need to read/write. + @param[in] Read Read or write. TRUE is read. + @param[in,out] CrValue CR value. + + @retval EFI_SUCCESS means read/write success, else return EFI_UNSUPPO= RTED. +**/ +UINTN +ReadWriteCr ( + IN UINT32 CrIndex, + IN BOOLEAN Read, + IN OUT UINTN *CrValue + ) +{ + switch (CrIndex) { + case 0: + if (Read) { + *CrValue =3D AsmReadCr0 (); + } else { + AsmWriteCr0 (*CrValue); + } + break; + case 2: + if (Read) { + *CrValue =3D AsmReadCr2 (); + } else { + AsmWriteCr2 (*CrValue); + } + break; + case 3: + if (Read) { + *CrValue =3D AsmReadCr3 (); + } else { + AsmWriteCr3 (*CrValue); + } + break; + case 4: + if (Read) { + *CrValue =3D AsmReadCr4 (); + } else { + AsmWriteCr4 (*CrValue); + } + break; + default: + return EFI_UNSUPPORTED;; + } + + return EFI_SUCCESS; +} + /** Initialize the CPU registers from a register table. =20 @@ -773,6 +825,7 @@ ProgramProcessorRegister ( UINTN ProcessorIndex; UINTN ValidThreadCount; UINT32 *ValidCoreCountPerPackage; + EFI_STATUS Status; =20 // // Traverse Register Table of this logical processor @@ -791,55 +844,18 @@ ProgramProcessorRegister ( // The specified register is Control Register // case ControlRegister: - switch (RegisterTableEntry->Index) { - case 0: - Value =3D AsmReadCr0 (); - Value =3D (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTabl= eEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr0 (Value); - break; - case 2: - Value =3D AsmReadCr2 (); - Value =3D (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTabl= eEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr2 (Value); - break; - case 3: - Value =3D AsmReadCr3 (); - Value =3D (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTabl= eEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr3 (Value); - break; - case 4: - Value =3D AsmReadCr4 (); - Value =3D (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTabl= eEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr4 (Value); - break; - case 8: - // - // Do we need to support CR8? - // - break; - default: + Status =3D ReadWriteCr (RegisterTableEntry->Index, TRUE, &Value); + if (EFI_ERROR (Status)) { break; } + + Value =3D (UINTN) BitFieldWrite64 ( + Value, + RegisterTableEntry->ValidBitStart, + RegisterTableEntry->ValidBitStart + RegisterTableE= ntry->ValidBitLength - 1, + RegisterTableEntry->Value + ); + ReadWriteCr (RegisterTableEntry->Index, FALSE, &Value); break; // // The specified register is Model Specific Register --=20 2.21.0.windows.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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