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From: Jeff Fan <jeff.fan@intel.com>
To: edk2-devel@ml01.01.org
Cc: Michael Kinney <michael.d.kinney@intel.com>,
	Feng Tian <feng.tian@intel.com>,
	Giri P Mudusuru <giri.p.mudusuru@intel.com>,
	Laszlo Ersek <lersek@redhat.com>
Subject: [Patch v4 21/46] UefiCpuPkg/MpInitLib: Fill MP_CPU_EXCHANGE_INFO fields
Date: Sat, 30 Jul 2016 02:14:47 +0800	[thread overview]
Message-ID: <1469816112-8200-22-git-send-email-jeff.fan@intel.com> (raw)
In-Reply-To: <1469816112-8200-1-git-send-email-jeff.fan@intel.com>

FillExchangeInfoData() is used to fill MP_CPU_EXCHANGE_INFO date exchanged
between C code and assembly code of AP reset vector.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
---
 UefiCpuPkg/Library/MpInitLib/MpLib.c | 79 ++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index bbf48f6..1625869 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -22,6 +22,47 @@
 EFI_GUID mCpuInitMpLibHobGuid = CPU_INIT_MP_LIB_HOB_GUID;
 
 /**
+  The function will check if BSP Execute Disable is enabled.
+  DxeIpl may have enabled Execute Disable for BSP,
+  APs need to get the status and sync up the settings.
+
+  @retval TRUE      BSP Execute Disable is enabled.
+  @retval FALSE     BSP Execute Disable is not enabled.
+**/
+BOOLEAN
+IsBspExecuteDisableEnabled (
+  VOID
+  )
+{
+  UINT32                      Eax;
+  CPUID_EXTENDED_CPU_SIG_EDX  Edx;
+  MSR_IA32_EFER_REGISTER      EferMsr;
+  BOOLEAN                     Enabled;
+
+  Enabled = FALSE;
+  AsmCpuid (CPUID_EXTENDED_FUNCTION, &Eax, NULL, NULL, NULL);
+  if (Eax >= CPUID_EXTENDED_CPU_SIG) {
+    AsmCpuid (CPUID_EXTENDED_CPU_SIG, NULL, NULL, NULL, &Edx.Uint32);
+    //
+    // CPUID 0x80000001
+    // Bit 20: Execute Disable Bit available.
+    //
+    if (Edx.Bits.NX != 0) {
+      EferMsr.Uint64 = AsmReadMsr64 (MSR_IA32_EFER);
+      //
+      // MSR 0xC0000080
+      // Bit 11: Execute Disable Bit enable.
+      //
+      if (EferMsr.Bits.NXE != 0) {
+        Enabled = TRUE;
+      }
+    }
+  }
+
+  return Enabled;
+}
+
+/**
   Get the Application Processors state.
 
   @param[in]  CpuData    The pointer to CPU_AP_DATA of specified AP
@@ -412,6 +453,44 @@ ApCFunction (
 }
 
 /**
+  This function will fill the exchange info structure.
+
+  @param[in] CpuMpData          Pointer to CPU MP Data
+
+**/
+VOID
+FillExchangeInfoData (
+  IN CPU_MP_DATA               *CpuMpData
+  )
+{
+  volatile MP_CPU_EXCHANGE_INFO    *ExchangeInfo;
+
+  ExchangeInfo                  = CpuMpData->MpCpuExchangeInfo;
+  ExchangeInfo->Lock            = 0;
+  ExchangeInfo->StackStart      = CpuMpData->Buffer;
+  ExchangeInfo->StackSize       = CpuMpData->CpuApStackSize;
+  ExchangeInfo->BufferStart     = CpuMpData->WakeupBuffer;
+  ExchangeInfo->ModeOffset      = CpuMpData->AddressMap.ModeEntryOffset;
+
+  ExchangeInfo->CodeSegment     = AsmReadCs ();
+  ExchangeInfo->DataSegment     = AsmReadDs ();
+
+  ExchangeInfo->Cr3             = AsmReadCr3 ();
+
+  ExchangeInfo->CFunction       = (UINTN) ApCFunction;
+  ExchangeInfo->NumApsExecuting = 0;
+  ExchangeInfo->CpuMpData       = CpuMpData;
+
+  ExchangeInfo->EnableExecuteDisable = IsBspExecuteDisableEnabled ();
+
+  //
+  // Get the BSP's data of GDT and IDT
+  //
+  AsmReadGdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->GdtrProfile);
+  AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);
+}
+
+/**
   MP Initialize Library initialization.
 
   This service will allocate AP reset vector and wakeup all APs to do APs
-- 
2.7.4.windows.1



  parent reply	other threads:[~2016-07-29 18:15 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-29 18:14 [Patch v4 00/46] MP Initialize Library Jeff Fan
2016-07-29 18:14 ` [Patch v4 01/46] UefiCpuPkg/LocalApic.h: Remove duplicated/conflicted definitions Jeff Fan
2016-07-29 18:14 ` [Patch v4 02/46] UefiCpuPkg/MpInitLib: Add microcode definitions defined in IA32 SDM Jeff Fan
2016-07-29 18:14 ` [Patch v4 03/46] UefiCpuPkg/CpuS3DataDxe: Move StartupVector allocation to EndOfDxe() Jeff Fan
2016-07-29 18:14 ` [Patch v4 04/46] UefiCpuPkg/MpInitLib: Add MP Initialize library class definition Jeff Fan
2016-07-29 18:14 ` [Patch v4 05/46] UefiCpuPkg/MpInitLib: Add two instances PeiMpInitLib and DxeMpInitLib Jeff Fan
2016-07-29 18:14 ` [Patch v4 06/46] UefiCpuPkg/MpInitLib: Add AP assembly code and MP_CPU_EXCHANGE_INFO Jeff Fan
2016-07-29 18:14 ` [Patch v4 07/46] UefiCpuPkg/MpInitLib: Fix typo and clean up the code Jeff Fan
2016-07-29 18:14 ` [Patch v4 08/46] UefiCpuPkg/MpInitLib: Add EnableExecuteDisable in MP_CPU_EXCHANGE_INFO Jeff Fan
2016-07-29 18:14 ` [Patch v4 09/46] UefiCpuPkg/MpInitLib: Add AsmRelocateApLoop() assembly code Jeff Fan
2016-07-29 18:14 ` [Patch v4 10/46] UefiCpuPkg/MpInitLib: Add MP_ASSEMBLY_ADDRESS_MAP Jeff Fan
2016-07-29 18:14 ` [Patch v4 11/46] UefiCpuPkg/MpInitLib: Get ApLoopMode and MointorFilter size Jeff Fan
2016-07-29 18:14 ` [Patch v4 12/46] UefiCpuPkg/MpInitLib: Allocate and initialize memory of MP Data buffer Jeff Fan
2016-07-29 18:14 ` [Patch v4 13/46] UefiCpuPkg/MpInitLib: Initialize CPU_AP_DATA for CPU APs Jeff Fan
2016-07-29 18:14 ` [Patch v4 14/46] UefiCpuPkg/MpInitLib: Add CPU_VOLATILE_REGISTERS & worker functions Jeff Fan
2016-07-29 18:14 ` [Patch v4 15/46] UefiCpuPkg/MpInitLib: Add MicrocodeDetect() and load microcode on BSP Jeff Fan
2016-07-29 18:14 ` [Patch v4 16/46] UefiCpuPkg/MpInitLib: Save CPU MP Data pointer Jeff Fan
2016-07-29 18:14 ` [Patch v4 17/46] UefiCpuPkg/MpInitLib: Register one End of PEI callback function Jeff Fan
2016-07-29 18:14 ` [Patch v4 18/46] UefiCpuPkg/MpInitLib: Register one period event to check APs status Jeff Fan
2016-07-29 18:14 ` [Patch v4 19/46] UefiCpuPkg/MpInitLib: Allocate AP reset vector buffer under 1MB Jeff Fan
2016-07-29 18:14 ` [Patch v4 20/46] UefiCpuPkg/MpInitLib: Add ApCFunction() executed by assembly code Jeff Fan
2016-07-29 18:14 ` Jeff Fan [this message]
2016-07-29 18:14 ` [Patch v4 22/46] UefiCpuPkg/MpInitLib: Add WakeUpAP() Jeff Fan
2016-07-29 18:14 ` [Patch v4 23/46] UefiCpuPkg/MpInitLib: Send INIT-SIPI-SIPI to get processor count Jeff Fan
2016-07-29 18:14 ` [Patch v4 24/46] UefiCpuPkg/MpInitLib: Enable x2APIC mode on BSP/APs Jeff Fan
2016-07-29 18:14 ` [Patch v4 25/46] UefiCpuPkg/MpInitLib: Sort processor by ascending order of APIC ID Jeff Fan
2016-07-29 18:14 ` [Patch v4 26/46] UefiCpuPkg/MpInitLib: Skip collect processor count if GUIDed HOB exist Jeff Fan
2016-07-29 18:14 ` [Patch v4 27/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibGetNumberOfProcessors() Jeff Fan
2016-07-29 18:14 ` [Patch v4 28/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibGetProcessorInfo() Jeff Fan
2016-07-29 18:14 ` [Patch v4 29/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibWhoAmI() Jeff Fan
2016-07-29 18:14 ` [Patch v4 30/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibSwitchBSP() Jeff Fan
2016-07-29 18:14 ` [Patch v4 31/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibEnableDisableAP() Jeff Fan
2016-07-29 18:14 ` [Patch v4 32/46] UefiCpuPkg/MpInitLib: Check APs Status and update APs status Jeff Fan
2016-07-29 18:14 ` [Patch v4 33/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibStartupThisAP() Jeff Fan
2016-07-29 18:15 ` [Patch v4 34/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibStartupAllAPs() Jeff Fan
2016-07-29 18:15 ` [Patch v4 35/46] UefiCpuPkg/MpInitLib: Place APs in safe loop before hand-off to OS Jeff Fan
2016-07-29 18:15 ` [Patch v4 36/46] OvmfPkg: Add MpInitLib reference in DSC files Jeff Fan
2016-07-29 18:15 ` [Patch v4 37/46] QuarkPlatformPkg: " Jeff Fan
2016-07-29 18:15 ` [Patch v4 38/46] UefiCpuPkg/CpuMpPei: Consume MpInitLib to produce CPU MP PPI services Jeff Fan
2016-07-29 18:15 ` [Patch v4 39/46] UefiCpuPkg/CpuMpPei: Remove unused files and codes Jeff Fan
2016-07-29 18:15 ` [Patch v4 40/46] UefiCpuPkg/CpuMpPei: Delete PeiMpServices.c and PeiMpServices.h Jeff Fan
2016-07-29 18:15 ` [Patch v4 41/46] UefiCpuPkg/CpuDxe: Consume MpInitLib to produce CPU MP Protocol services Jeff Fan
2016-07-29 18:15 ` [Patch v4 42/46] UefiCpuPkg/CpuDxe: Move SetMtrrsFromBuffer() location Jeff Fan
2016-07-29 18:15 ` [Patch v4 43/46] UefiCpuPkg/CpuDxe: Remove unused codes and files Jeff Fan
2016-07-29 18:15 ` [Patch v4 44/46] MdePkg/MpService.h: Fixed typo in function header to match PI spec Jeff Fan
2016-07-29 18:15 ` [Patch v4 45/46] MdePkg/MpService.h: Trim whitespace at end of line Jeff Fan
2016-07-29 18:15 ` [Patch v4 46/46] UefiCpuPkg/CpuDxe: Fixed typo in function header to match PI spec Jeff Fan

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