ArmPlatformPkg/PrePi/PrePi.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, 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
  17 #include <Library/DebugAgentLib.h>
  18 #include <Library/BaseMemoryLib.h>
  19 #include <Library/PrePiLib.h>
  20 #include <Library/IoLib.h>
  21 #include <Library/PrintLib.h>
  22 #include <Library/PeCoffGetEntryPointLib.h>
  23 #include <Library/PrePiHobListPointerLib.h>
  24 #include <Library/TimerLib.h>
  25 #include <Library/PerformanceLib.h>
  26
  27 #include <Ppi/GuidedSectionExtraction.h>
  28 #include <Guid/LzmaDecompress.h>
  29
  30 #include "PrePi.h"
  31 #include "LzmaDecompress.h"
  32
  33 VOID
  34 PrePiCommonExceptionEntry (
  35   IN UINT32 Entry,
  36   IN UINT32 LR
  37   );
  38
  39 EFI_STATUS
  40 EFIAPI
  41 ExtractGuidedSectionLibConstructor (
  42   VOID
  43   );
  44
  45 EFI_STATUS
  46 EFIAPI
  47 LzmaDecompressLibConstructor (
  48   VOID
  49   );
  50
  51 VOID
  52 PrePiMain (
  53   IN  UINTN                     UefiMemoryBase,
  54   IN  UINT64                    StartTimeStamp
  55   )
  56 {
  57   EFI_HOB_HANDOFF_INFO_TABLE*   HobList;
  58   EFI_STATUS                    Status;
  59   CHAR8                         Buffer[100];
  60   UINTN                         CharCount;
  61   UINTN                         UefiMemoryTop;
  62   UINTN                         StacksSize;
  63   UINTN                         StacksBase;
  64
  65   // Enable program flow prediction, if supported.
  66   ArmEnableBranchPrediction ();
  67
  68   if (FixedPcdGet32(PcdVFPEnabled)) {
  69     ArmEnableVFP();
  70   }
  71
  72   // Initialize the Serial Port
  73   SerialPortInitialize ();
  74   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"UEFI firmware built at %a on %a\n\r",__TIME__, __DATE__);
  75   SerialPortWrite ((UINT8 *) Buffer, CharCount);
  76
  77   // Initialize the Debug Agent for Source Level Debugging
  78   InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
  79   SaveAndSetDebugTimerInterrupt (TRUE);
  80
  81   UefiMemoryTop = UefiMemoryBase + FixedPcdGet32 (PcdSystemMemoryUefiRegionSize);
  82   StacksSize = PcdGet32 (PcdCPUCoresNonSecStackSize) * PcdGet32 (PcdMPCoreMaxCores);
  83   StacksBase = UefiMemoryTop - StacksSize;
  84
  85   // Check the PcdCPUCoresNonSecStackBase match with the calculated StackBase
  86   ASSERT (StacksBase == PcdGet32 (PcdCPUCoresNonSecStackBase));
  87
  88   // Declare the PI/UEFI memory region
  89   HobList = HobConstructor (
  90     (VOID*)UefiMemoryBase,
  91     FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
  92     (VOID*)UefiMemoryBase,
  93     (VOID*)StacksBase  // The top of the UEFI Memory is reserved for the stacks
  94     );
  95   PrePeiSetHobList (HobList);
  96
  97   // Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
  98   Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
  99   ASSERT_EFI_ERROR (Status);
 100
 101   // Create the Stacks HOB (reserve the memory for all stacks)
 102   BuildStackHob (StacksBase, StacksSize);
 103
 104   // Set the Boot Mode
 105   SetBootMode (ArmPlatformGetBootMode ());
 106
 107   // Initialize Platform HOBs (CpuHob and FvHob)
 108   Status = PlatformPeim ();
 109   ASSERT_EFI_ERROR (Status);
 110
 111   BuildMemoryTypeInformationHob ();
 112
 113   // Now, the HOB List has been initialized, we can register performance information
 114   PERF_START (NULL, "PEI", NULL, StartTimeStamp);
 115
 116   // SEC phase needs to run library constructors by hand.
 117   ExtractGuidedSectionLibConstructor ();
 118   LzmaDecompressLibConstructor ();
 119
 120   // Build HOBs to pass up our version of stuff the DXE Core needs to save space
 121   BuildPeCoffLoaderHob ();
 122   BuildExtractSectionHob (
 123     &gLzmaCustomDecompressGuid,
 124     LzmaGuidedSectionGetInfo,
 125     LzmaGuidedSectionExtraction
 126     );
 127
 128   // Assume the FV that contains the SEC (our code) also contains a compressed FV.
 129   Status = DecompressFirstFv ();
 130   ASSERT_EFI_ERROR (Status);
 131
 132   // Load the DXE Core and transfer control to it
 133   Status = LoadDxeCoreFromFv (NULL, 0);
 134   ASSERT_EFI_ERROR (Status);
 135 }
 136
 137 VOID
 138 CEntryPoint (
 139   IN  UINTN                     CoreId,
 140   IN  UINTN                     UefiMemoryBase
 141   )
 142 {
 143   UINT64   StartTimeStamp;
 144
 145   if ((CoreId == ARM_PRIMARY_CORE) && PerformanceMeasurementEnabled ()) {
 146     // Initialize the Timer Library to setup the Timer HW controller
 147     TimerConstructor ();
 148     // We cannot call yet the PerformanceLib because the HOB List has not been initialized
 149     StartTimeStamp = GetPerformanceCounter ();
 150   } else {
 151     StartTimeStamp = 0;
 152   }
 153
 154   // Clean Data cache
 155   ArmCleanInvalidateDataCache ();
 156
 157   // Invalidate instruction cache
 158   ArmInvalidateInstructionCache ();
 159
 160   //TODO:Drain Write Buffer
 161
 162   // Enable Instruction & Data caches
 163   ArmEnableDataCache ();
 164   ArmEnableInstructionCache ();
 165
 166   // Write VBAR - The Vector table must be 32-byte aligned
 167   ASSERT (((UINT32)PrePiVectorTable & ((1 << 5)-1)) == 0);
 168   ArmWriteVBar ((UINT32)PrePiVectorTable);
 169
 170   // If not primary Jump to Secondary Main
 171   if (CoreId == ARM_PRIMARY_CORE) {
 172     // Goto primary Main.
 173     PrimaryMain (UefiMemoryBase, StartTimeStamp);
 174   } else {
 175     SecondaryMain (CoreId);
 176   }
 177
 178   // DXE Core should always load and never return
 179   ASSERT (FALSE);
 180 }
 181
 182 VOID
 183 PrePiCommonExceptionEntry (
 184   IN UINT32 Entry,
 185   IN UINT32 LR
 186   )
 187 {
 188   CHAR8           Buffer[100];
 189   UINTN           CharCount;
 190
 191   switch (Entry) {
 192   case 0:
 193     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reset Exception at 0x%X\n\r",LR);
 194     break;
 195   case 1:
 196     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Undefined Exception at 0x%X\n\r",LR);
 197     break;
 198   case 2:
 199     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"SWI Exception at 0x%X\n\r",LR);
 200     break;
 201   case 3:
 202     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"PrefetchAbort Exception at 0x%X\n\r",LR);
 203     break;
 204   case 4:
 205     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"DataAbort Exception at 0x%X\n\r",LR);
 206     break;
 207   case 5:
 208     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reserved Exception at 0x%X\n\r",LR);
 209     break;
 210   case 6:
 211     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"IRQ Exception at 0x%X\n\r",LR);
 212     break;
 213   case 7:
 214     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"FIQ Exception at 0x%X\n\r",LR);
 215     break;
 216   default:
 217     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Unknown Exception at 0x%X\n\r",LR);
 218     break;
 219   }
 220   SerialPortWrite ((UINT8 *) Buffer, CharCount);
 221   while(1);
 222 }