From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id B944C20084778 for ; Tue, 28 Mar 2017 20:03:52 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP; 28 Mar 2017 20:03:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.36,239,1486454400"; d="scan'208";a="1113146591" Received: from ray-dev.ccr.corp.intel.com ([10.239.9.25]) by orsmga001.jf.intel.com with ESMTP; 28 Mar 2017 20:03:51 -0700 From: Ruiyu Ni To: edk2-devel@lists.01.org Cc: Jeff Fan Date: Wed, 29 Mar 2017 11:03:39 +0800 Message-Id: <20170329030346.249872-4-ruiyu.ni@intel.com> X-Mailer: git-send-email 2.9.0.windows.1 In-Reply-To: <20170329030346.249872-1-ruiyu.ni@intel.com> References: <20170329030346.249872-1-ruiyu.ni@intel.com> Subject: [PATCH 03/10] UefiCpuPkg/MtrrLib: IsMtrrSupported uses definitions in Msr.h X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Mar 2017 03:03:52 -0000 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni Cc: Jeff Fan --- UefiCpuPkg/Library/MtrrLib/MtrrLib.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c index 2647dda..38083d4 100644 --- a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c +++ b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c @@ -18,6 +18,9 @@ #include +#include +#include + #include #include #include @@ -2124,26 +2127,25 @@ IsMtrrSupported ( VOID ) { - UINT32 RegEdx; - UINT64 MtrrCap; + CPUID_VERSION_INFO_EDX Edx; + MSR_IA32_MTRRCAP_REGISTER MtrrCap; // // Check CPUID(1).EDX[12] for MTRR capability // - AsmCpuid (1, NULL, NULL, NULL, &RegEdx); - if (BitFieldRead32 (RegEdx, 12, 12) == 0) { + AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &Edx.Uint32); + if (Edx.Bits.MTRR == 0) { return FALSE; } // - // Check IA32_MTRRCAP.[0..7] for number of variable MTRRs and IA32_MTRRCAP[8] for - // fixed MTRRs existence. If number of variable MTRRs is zero, or fixed MTRRs do not + // Check number of variable MTRRs and fixed MTRRs existence. + // If number of variable MTRRs is zero, or fixed MTRRs do not // exist, return false. // - MtrrCap = AsmReadMsr64 (MTRR_LIB_IA32_MTRR_CAP); - if ((BitFieldRead64 (MtrrCap, 0, 7) == 0) || (BitFieldRead64 (MtrrCap, 8, 8) == 0)) { + MtrrCap.Uint64 = AsmReadMsr64 (MSR_IA32_MTRRCAP); + if ((MtrrCap.Bits.VCNT == 0) || (MtrrCap.Bits.FIX == 0)) { return FALSE; } - return TRUE; } -- 2.9.0.windows.1