From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: mx.groups.io; dkim=missing; spf=fail (domain: intel.com, ip: , mailfrom: eric.dong@intel.com) Received: from mga06.intel.com (mga06.intel.com []) by groups.io with SMTP; Thu, 15 Aug 2019 20:57:37 -0700 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Aug 2019 20:57:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,391,1559545200"; d="scan'208";a="376590697" Received: from ydong10-win10.ccr.corp.intel.com ([10.239.158.133]) by fmsmga005.fm.intel.com with ESMTP; 15 Aug 2019 20:57:36 -0700 From: "Dong, Eric" To: devel@edk2.groups.io Cc: Ray Ni , Laszlo Ersek Subject: [Patch v4 4/6] UefiCpuPkg/RegisterCpuFeaturesLib: Combine CR read/write action. Date: Fri, 16 Aug 2019 11:57:28 +0800 Message-Id: <20190816035730.3252-5-eric.dong@intel.com> X-Mailer: git-send-email 2.21.0.windows.1 In-Reply-To: <20190816035730.3252-1-eric.dong@intel.com> References: <20190816035730.3252-1-eric.dong@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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/CpuFeaturesInitialize.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 ( ) != Value); } +/** + 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_UNSUPPORTED. +**/ +UINTN +ReadWriteCr ( + IN UINT32 CrIndex, + IN BOOLEAN Read, + IN OUT UINTN *CrValue + ) +{ + switch (CrIndex) { + case 0: + if (Read) { + *CrValue = AsmReadCr0 (); + } else { + AsmWriteCr0 (*CrValue); + } + break; + case 2: + if (Read) { + *CrValue = AsmReadCr2 (); + } else { + AsmWriteCr2 (*CrValue); + } + break; + case 3: + if (Read) { + *CrValue = AsmReadCr3 (); + } else { + AsmWriteCr3 (*CrValue); + } + break; + case 4: + if (Read) { + *CrValue = AsmReadCr4 (); + } else { + AsmWriteCr4 (*CrValue); + } + break; + default: + return EFI_UNSUPPORTED;; + } + + return EFI_SUCCESS; +} + /** Initialize the CPU registers from a register table. @@ -773,6 +825,7 @@ ProgramProcessorRegister ( UINTN ProcessorIndex; UINTN ValidThreadCount; UINT32 *ValidCoreCountPerPackage; + EFI_STATUS Status; // // 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 = AsmReadCr0 (); - Value = (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTableEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr0 (Value); - break; - case 2: - Value = AsmReadCr2 (); - Value = (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTableEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr2 (Value); - break; - case 3: - Value = AsmReadCr3 (); - Value = (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTableEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr3 (Value); - break; - case 4: - Value = AsmReadCr4 (); - Value = (UINTN) BitFieldWrite64 ( - Value, - RegisterTableEntry->ValidBitStart, - RegisterTableEntry->ValidBitStart + RegisterTableEntry->ValidBitLength - 1, - RegisterTableEntry->Value - ); - AsmWriteCr4 (Value); - break; - case 8: - // - // Do we need to support CR8? - // - break; - default: + Status = ReadWriteCr (RegisterTableEntry->Index, TRUE, &Value); + if (EFI_ERROR (Status)) { break; } + + Value = (UINTN) BitFieldWrite64 ( + Value, + RegisterTableEntry->ValidBitStart, + RegisterTableEntry->ValidBitStart + RegisterTableEntry->ValidBitLength - 1, + RegisterTableEntry->Value + ); + ReadWriteCr (RegisterTableEntry->Index, FALSE, &Value); break; // // The specified register is Model Specific Register -- 2.21.0.windows.1