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