ArmPlatformPkg/PrePi/PrePi.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2012, 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/PrintLib.h>
  20 #include <Library/PeCoffGetEntryPointLib.h>
  21 #include <Library/PrePiHobListPointerLib.h>
  22 #include <Library/TimerLib.h>
  23 #include <Library/PerformanceLib.h>
  24
  25 #include <Ppi/GuidedSectionExtraction.h>
  26 #include <Guid/LzmaDecompress.h>
  27 #include <Guid/ArmGlobalVariableHob.h>
  28
  29 #include "PrePi.h"
  30 #include "LzmaDecompress.h"
  31
  32 #define IS_XIP() (((UINT32)FixedPcdGet32 (PcdFdBaseAddress) > (UINT32)(FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize))) || \
  33                   ((FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) < FixedPcdGet32 (PcdSystemMemoryBase)))
  34
  35 // Not used when PrePi in run in XIP mode
  36 UINTN mGlobalVariableBase = 0;
  37
  38 VOID
  39 PrePiCommonExceptionEntry (
  40   IN UINT32 Entry,
  41   IN UINT32 LR
  42   );
  43
  44 EFI_STATUS
  45 EFIAPI
  46 ExtractGuidedSectionLibConstructor (
  47   VOID
  48   );
  49
  50 EFI_STATUS
  51 EFIAPI
  52 LzmaDecompressLibConstructor (
  53   VOID
  54   );
  55
  56 VOID
  57 EFIAPI
  58 BuildGlobalVariableHob (
  59   IN EFI_PHYSICAL_ADDRESS         GlobalVariableBase,
  60   IN UINT32                       GlobalVariableSize
  61   )
  62 {
  63   ARM_HOB_GLOBAL_VARIABLE  *Hob;
  64
  65   Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, sizeof (ARM_HOB_GLOBAL_VARIABLE));
  66   ASSERT(Hob != NULL);
  67
  68   CopyGuid (&(Hob->Header.Name), &gArmGlobalVariableGuid);
  69   Hob->GlobalVariableBase = GlobalVariableBase;
  70   Hob->GlobalVariableSize = GlobalVariableSize;
  71 }
  72
  73 VOID
  74 PrePiMain (
  75   IN  UINTN                     UefiMemoryBase,
  76   IN  UINTN                     StacksBase,
  77   IN  UINTN                     GlobalVariableBase,
  78   IN  UINT64                    StartTimeStamp
  79   )
  80 {
  81   EFI_HOB_HANDOFF_INFO_TABLE*   HobList;
  82   EFI_STATUS                    Status;
  83   CHAR8                         Buffer[100];
  84   UINTN                         CharCount;
  85   UINTN                         StacksSize;
  86
  87   // If ensure the FD is either part of the System Memory or totally outside of the System Memory (XIP)
  88   ASSERT (IS_XIP() ||
  89           ((FixedPcdGet32 (PcdFdBaseAddress) >= FixedPcdGet32 (PcdSystemMemoryBase)) &&
  90            ((UINT32)(FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) <= (UINT32)(FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize)))));
  91
  92   // Enable program flow prediction, if supported.
  93   ArmEnableBranchPrediction ();
  94
  95   if (FixedPcdGet32(PcdVFPEnabled)) {
  96     ArmEnableVFP();
  97   }
  98
  99   // Initialize the Serial Port
 100   SerialPortInitialize ();
 101   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"UEFI firmware (version %s built at %a on %a)\n\r",
 102     (CHAR16*)PcdGetPtr(PcdFirmwareVersionString), __TIME__, __DATE__);
 103   SerialPortWrite ((UINT8 *) Buffer, CharCount);
 104
 105   // Initialize the Debug Agent for Source Level Debugging
 106   InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
 107   SaveAndSetDebugTimerInterrupt (TRUE);
 108
 109   // Declare the PI/UEFI memory region
 110   HobList = HobConstructor (
 111     (VOID*)UefiMemoryBase,
 112     FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
 113     (VOID*)UefiMemoryBase,
 114     (VOID*)StacksBase  // The top of the UEFI Memory is reserved for the stacks
 115     );
 116   PrePeiSetHobList (HobList);
 117
 118   // Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
 119   Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
 120   ASSERT_EFI_ERROR (Status);
 121
 122   // Create the Stacks HOB (reserve the memory for all stacks)
 123   if (ArmIsMpCore ()) {
 124     StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize) + (FixedPcdGet32(PcdClusterCount) * 4 * FixedPcdGet32(PcdCPUCoreSecondaryStackSize));
 125   } else {
 126     StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
 127   }
 128   BuildStackHob (StacksBase, StacksSize);
 129
 130   // Declare the Global Variable HOB
 131   BuildGlobalVariableHob (GlobalVariableBase, FixedPcdGet32 (PcdPeiGlobalVariableSize));
 132
 133   //TODO: Call CpuPei as a library
 134   BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
 135
 136   // Set the Boot Mode
 137   SetBootMode (ArmPlatformGetBootMode ());
 138
 139   // Initialize Platform HOBs (CpuHob and FvHob)
 140   Status = PlatformPeim ();
 141   ASSERT_EFI_ERROR (Status);
 142
 143   // Now, the HOB List has been initialized, we can register performance information
 144   PERF_START (NULL, "PEI", NULL, StartTimeStamp);
 145
 146   // SEC phase needs to run library constructors by hand.
 147   ExtractGuidedSectionLibConstructor ();
 148   LzmaDecompressLibConstructor ();
 149
 150   // Build HOBs to pass up our version of stuff the DXE Core needs to save space
 151   BuildPeCoffLoaderHob ();
 152   BuildExtractSectionHob (
 153     &gLzmaCustomDecompressGuid,
 154     LzmaGuidedSectionGetInfo,
 155     LzmaGuidedSectionExtraction
 156     );
 157
 158   // Assume the FV that contains the SEC (our code) also contains a compressed FV.
 159   Status = DecompressFirstFv ();
 160   ASSERT_EFI_ERROR (Status);
 161
 162   // Load the DXE Core and transfer control to it
 163   Status = LoadDxeCoreFromFv (NULL, 0);
 164   ASSERT_EFI_ERROR (Status);
 165 }
 166
 167 VOID
 168 CEntryPoint (
 169   IN  UINTN                     MpId,
 170   IN  UINTN                     UefiMemoryBase,
 171   IN  UINTN                     StacksBase,
 172   IN  UINTN                     GlobalVariableBase
 173   )
 174 {
 175   UINT64   StartTimeStamp;
 176
 177   // Initialize the platform specific controllers
 178   ArmPlatformInitialize (MpId);
 179
 180   if (IS_PRIMARY_CORE(MpId) && PerformanceMeasurementEnabled ()) {
 181     // Initialize the Timer Library to setup the Timer HW controller
 182     TimerConstructor ();
 183     // We cannot call yet the PerformanceLib because the HOB List has not been initialized
 184     StartTimeStamp = GetPerformanceCounter ();
 185   } else {
 186     StartTimeStamp = 0;
 187   }
 188
 189   // Clean Data cache
 190   ArmCleanInvalidateDataCache ();
 191
 192   // Invalidate instruction cache
 193   ArmInvalidateInstructionCache ();
 194
 195   //TODO:Drain Write Buffer
 196
 197   // Enable Instruction & Data caches
 198   ArmEnableDataCache ();
 199   ArmEnableInstructionCache ();
 200
 201   // Define the Global Variable region when we are not running in XIP
 202   if (!IS_XIP()) {
 203     if (IS_PRIMARY_CORE(MpId)) {
 204       mGlobalVariableBase = GlobalVariableBase;
 205       if (ArmIsMpCore()) {
 206         // Signal the Global Variable Region is defined (event: ARM_CPU_EVENT_DEFAULT)
 207         ArmCallSEV ();
 208       }
 209     } else {
 210       // Wait the Primay core has defined the address of the Global Variable region (event: ARM_CPU_EVENT_DEFAULT)
 211       ArmCallWFE ();
 212     }
 213   }
 214
 215   // Write VBAR - The Vector table must be 32-byte aligned
 216   ASSERT (((UINT32)PrePiVectorTable & ((1 << 5)-1)) == 0);
 217   ArmWriteVBar ((UINT32)PrePiVectorTable);
 218
 219   // If not primary Jump to Secondary Main
 220   if (IS_PRIMARY_CORE(MpId)) {
 221     // Goto primary Main.
 222     PrimaryMain (UefiMemoryBase, StacksBase, GlobalVariableBase, StartTimeStamp);
 223   } else {
 224     SecondaryMain (MpId);
 225   }
 226
 227   // DXE Core should always load and never return
 228   ASSERT (FALSE);
 229 }
 230
 231 VOID
 232 PrePiCommonExceptionEntry (
 233   IN UINT32 Entry,
 234   IN UINT32 LR
 235   )
 236 {
 237   CHAR8           Buffer[100];
 238   UINTN           CharCount;
 239
 240   switch (Entry) {
 241   case 0:
 242     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reset Exception at 0x%X\n\r",LR);
 243     break;
 244   case 1:
 245     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Undefined Exception at 0x%X\n\r",LR);
 246     break;
 247   case 2:
 248     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"SWI Exception at 0x%X\n\r",LR);
 249     break;
 250   case 3:
 251     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"PrefetchAbort Exception at 0x%X\n\r",LR);
 252     break;
 253   case 4:
 254     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"DataAbort Exception at 0x%X\n\r",LR);
 255     break;
 256   case 5:
 257     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reserved Exception at 0x%X\n\r",LR);
 258     break;
 259   case 6:
 260     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"IRQ Exception at 0x%X\n\r",LR);
 261     break;
 262   case 7:
 263     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"FIQ Exception at 0x%X\n\r",LR);
 264     break;
 265   default:
 266     CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Unknown Exception at 0x%X\n\r",LR);
 267     break;
 268   }
 269   SerialPortWrite ((UINT8 *) Buffer, CharCount);
 270   while(1);
 271 }