ArmVirtPkg/PrePi/PrePi.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2014, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #include <PiPei.h>
  16 #include <Pi/PiBootMode.h>
  17
  18 #include <Library/PrePiLib.h>
  19 #include <Library/PrintLib.h>
  20 #include <Library/PrePiHobListPointerLib.h>
  21 #include <Library/TimerLib.h>
  22 #include <Library/PerformanceLib.h>
  23 #include <Library/CacheMaintenanceLib.h>
  24
  25 #include <Ppi/GuidedSectionExtraction.h>
  26 #include <Ppi/ArmMpCoreInfo.h>
  27
  28 #include "PrePi.h"
  29
  30 VOID
  31 EFIAPI
  32 ProcessLibraryConstructorList (
  33   VOID
  34   );
  35
  36 VOID
  37 PrePiMain (
  38   IN  UINTN                     UefiMemoryBase,
  39   IN  UINTN                     StacksBase,
  40   IN  UINT64                    StartTimeStamp
  41   )
  42 {
  43   EFI_HOB_HANDOFF_INFO_TABLE*   HobList;
  44   EFI_STATUS                    Status;
  45   CHAR8                         Buffer[100];
  46   UINTN                         CharCount;
  47   UINTN                         StacksSize;
  48
  49   // Initialize the architecture specific bits
  50   ArchInitialize ();
  51
  52   // Declare the PI/UEFI memory region
  53   HobList = HobConstructor (
  54     (VOID*)UefiMemoryBase,
  55     FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
  56     (VOID*)UefiMemoryBase,
  57     (VOID*)StacksBase  // The top of the UEFI Memory is reserved for the stacks
  58     );
  59   PrePeiSetHobList (HobList);
  60
  61   //
  62   // Ensure that the loaded image is invalidated in the caches, so that any
  63   // modifications we made with the caches and MMU off (such as the applied
  64   // relocations) don't become invisible once we turn them on.
  65   //
  66   InvalidateDataCacheRange((VOID *)(UINTN)PcdGet64 (PcdFdBaseAddress), PcdGet32 (PcdFdSize));
  67
  68   // Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
  69   Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
  70   ASSERT_EFI_ERROR (Status);
  71
  72   // Initialize the Serial Port
  73   SerialPortInitialize ();
  74   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"UEFI firmware (version %s built at %a on %a)\n\r",
  75     (CHAR16*)PcdGetPtr(PcdFirmwareVersionString), __TIME__, __DATE__);
  76   SerialPortWrite ((UINT8 *) Buffer, CharCount);
  77
  78   // Create the Stacks HOB (reserve the memory for all stacks)
  79   StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
  80   BuildStackHob (StacksBase, StacksSize);
  81
  82   //TODO: Call CpuPei as a library
  83   BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
  84
  85   // Set the Boot Mode
  86   SetBootMode (BOOT_WITH_FULL_CONFIGURATION);
  87
  88   // Initialize Platform HOBs (CpuHob and FvHob)
  89   Status = PlatformPeim ();
  90   ASSERT_EFI_ERROR (Status);
  91
  92   // Now, the HOB List has been initialized, we can register performance information
  93   PERF_START (NULL, "PEI", NULL, StartTimeStamp);
  94
  95   // SEC phase needs to run library constructors by hand.
  96   ProcessLibraryConstructorList ();
  97
  98   // Assume the FV that contains the SEC (our code) also contains a compressed FV.
  99   Status = DecompressFirstFv ();
 100   ASSERT_EFI_ERROR (Status);
 101
 102   // Load the DXE Core and transfer control to it
 103   Status = LoadDxeCoreFromFv (NULL, 0);
 104   ASSERT_EFI_ERROR (Status);
 105 }
 106
 107 VOID
 108 CEntryPoint (
 109   IN  UINTN                     MpId,
 110   IN  UINTN                     UefiMemoryBase,
 111   IN  UINTN                     StacksBase
 112   )
 113 {
 114   UINT64   StartTimeStamp;
 115
 116   if (PerformanceMeasurementEnabled ()) {
 117     // Initialize the Timer Library to setup the Timer HW controller
 118     TimerConstructor ();
 119     // We cannot call yet the PerformanceLib because the HOB List has not been initialized
 120     StartTimeStamp = GetPerformanceCounter ();
 121   } else {
 122     StartTimeStamp = 0;
 123   }
 124
 125   // Data Cache enabled on Primary core when MMU is enabled.
 126   ArmDisableDataCache ();
 127   // Invalidate instruction cache
 128   ArmInvalidateInstructionCache ();
 129   // Enable Instruction Caches on all cores.
 130   ArmEnableInstructionCache ();
 131
 132   PrePiMain (UefiMemoryBase, StacksBase, StartTimeStamp);
 133
 134   // DXE Core should always load and never return
 135   ASSERT (FALSE);
 136 }