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/ArmCpuLib.h>
  18 #include <Library/DebugAgentLib.h>
  19 #include <Library/PrePiLib.h>
  20 #include <Library/PrintLib.h>
  21 #include <Library/PeCoffGetEntryPointLib.h>
  22 #include <Library/PrePiHobListPointerLib.h>
  23 #include <Library/TimerLib.h>
  24 #include <Library/PerformanceLib.h>
  25
  26 #include <Ppi/GuidedSectionExtraction.h>
  27 #include <Guid/LzmaDecompress.h>
  28 #include <Guid/ArmGlobalVariableHob.h>
  29
  30 #include "PrePi.h"
  31 #include "LzmaDecompress.h"
  32
  33 #define IS_XIP() (((UINT32)FixedPcdGet32 (PcdFdBaseAddress) > (UINT32)(FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize))) || \
  34                   ((FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) < FixedPcdGet32 (PcdSystemMemoryBase)))
  35
  36 // Not used when PrePi in run in XIP mode
  37 UINTN mGlobalVariableBase = 0;
  38
  39 VOID
  40 PrePiCommonExceptionEntry (
  41   IN UINT32 Entry,
  42   IN UINT32 LR
  43   );
  44
  45 EFI_STATUS
  46 EFIAPI
  47 ExtractGuidedSectionLibConstructor (
  48   VOID
  49   );
  50
  51 EFI_STATUS
  52 EFIAPI
  53 LzmaDecompressLibConstructor (
  54   VOID
  55   );
  56
  57 VOID
  58 EFIAPI
  59 BuildGlobalVariableHob (
  60   IN EFI_PHYSICAL_ADDRESS         GlobalVariableBase,
  61   IN UINT32                       GlobalVariableSize
  62   )
  63 {
  64   ARM_HOB_GLOBAL_VARIABLE  *Hob;
  65
  66   Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, sizeof (ARM_HOB_GLOBAL_VARIABLE));
  67   ASSERT(Hob != NULL);
  68
  69   CopyGuid (&(Hob->Header.Name), &gArmGlobalVariableGuid);
  70   Hob->GlobalVariableBase = GlobalVariableBase;
  71   Hob->GlobalVariableSize = GlobalVariableSize;
  72 }
  73
  74 VOID
  75 PrePiMain (
  76   IN  UINTN                     UefiMemoryBase,
  77   IN  UINTN                     StacksBase,
  78   IN  UINTN                     GlobalVariableBase,
  79   IN  UINT64                    StartTimeStamp
  80   )
  81 {
  82   EFI_HOB_HANDOFF_INFO_TABLE*   HobList;
  83   EFI_STATUS                    Status;
  84   CHAR8                         Buffer[100];
  85   UINTN                         CharCount;
  86   UINTN                         StacksSize;
  87
  88   // If ensure the FD is either part of the System Memory or totally outside of the System Memory (XIP)
  89   ASSERT (IS_XIP() ||
  90           ((FixedPcdGet32 (PcdFdBaseAddress) >= FixedPcdGet32 (PcdSystemMemoryBase)) &&
  91            ((UINT32)(FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) <= (UINT32)(FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize)))));
  92
  93   // Enable program flow prediction, if supported.
  94   ArmEnableBranchPrediction ();
  95
  96   if (FixedPcdGet32(PcdVFPEnabled)) {
  97     ArmEnableVFP();
  98   }
  99
 100   // Initialize the Serial Port
 101   SerialPortInitialize ();
 102   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"UEFI firmware (version %s built at %a on %a)\n\r",
 103     (CHAR16*)PcdGetPtr(PcdFirmwareVersionString), __TIME__, __DATE__);
 104   SerialPortWrite ((UINT8 *) Buffer, CharCount);
 105
 106   // Initialize the Debug Agent for Source Level Debugging
 107   InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
 108   SaveAndSetDebugTimerInterrupt (TRUE);
 109
 110   // Declare the PI/UEFI memory region
 111   HobList = HobConstructor (
 112     (VOID*)UefiMemoryBase,
 113     FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
 114     (VOID*)UefiMemoryBase,
 115     (VOID*)StacksBase  // The top of the UEFI Memory is reserved for the stacks
 116     );
 117   PrePeiSetHobList (HobList);
 118
 119   // Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
 120   Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
 121   ASSERT_EFI_ERROR (Status);
 122
 123   // Create the Stacks HOB (reserve the memory for all stacks)
 124   if (ArmIsMpCore ()) {
 125     StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize) + (FixedPcdGet32(PcdClusterCount) * 4 * FixedPcdGet32(PcdCPUCoreSecondaryStackSize));
 126   } else {
 127     StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
 128   }
 129   BuildStackHob (StacksBase, StacksSize);
 130
 131   // Declare the Global Variable HOB
 132   BuildGlobalVariableHob (GlobalVariableBase, FixedPcdGet32 (PcdPeiGlobalVariableSize));
 133
 134   //TODO: Call CpuPei as a library
 135   BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
 136
 137   // Set the Boot Mode
 138   SetBootMode (ArmPlatformGetBootMode ());
 139
 140   // Initialize Platform HOBs (CpuHob and FvHob)
 141   Status = PlatformPeim ();
 142   ASSERT_EFI_ERROR (Status);
 143
 144   // Now, the HOB List has been initialized, we can register performance information
 145   PERF_START (NULL, "PEI", NULL, StartTimeStamp);
 146
 147   // SEC phase needs to run library constructors by hand.
 148   ExtractGuidedSectionLibConstructor ();
 149   LzmaDecompressLibConstructor ();
 150
 151   // Build HOBs to pass up our version of stuff the DXE Core needs to save space
 152   BuildPeCoffLoaderHob ();
 153   BuildExtractSectionHob (
 154     &gLzmaCustomDecompressGuid,
 155     LzmaGuidedSectionGetInfo,
 156     LzmaGuidedSectionExtraction
 157     );
 158
 159   // Assume the FV that contains the SEC (our code) also contains a compressed FV.
 160   Status = DecompressFirstFv ();
 161   ASSERT_EFI_ERROR (Status);
 162
 163   // Load the DXE Core and transfer control to it
 164   Status = LoadDxeCoreFromFv (NULL, 0);
 165   ASSERT_EFI_ERROR (Status);
 166 }
 167
 168 VOID
 169 CEntryPoint (
 170   IN  UINTN                     MpId,
 171   IN  UINTN                     UefiMemoryBase,
 172   IN  UINTN                     StacksBase,
 173   IN  UINTN                     GlobalVariableBase
 174   )
 175 {
 176   UINT64   StartTimeStamp;
 177
 178   // Initialize the platform specific controllers
 179   ArmPlatformInitialize (MpId);
 180
 181   if (IS_PRIMARY_CORE(MpId) && PerformanceMeasurementEnabled ()) {
 182     // Initialize the Timer Library to setup the Timer HW controller
 183     TimerConstructor ();
 184     // We cannot call yet the PerformanceLib because the HOB List has not been initialized
 185     StartTimeStamp = GetPerformanceCounter ();
 186   } else {
 187     StartTimeStamp = 0;
 188   }
 189
 190   // Clean Data cache
 191   ArmCleanInvalidateDataCache ();
 192
 193   // Invalidate instruction cache
 194   ArmInvalidateInstructionCache ();
 195
 196   //TODO:Drain Write Buffer
 197
 198   // Enable Instruction & Data caches
 199   ArmEnableDataCache ();
 200   ArmEnableInstructionCache ();
 201
 202   // Define the Global Variable region when we are not running in XIP
 203   if (!IS_XIP()) {
 204     if (IS_PRIMARY_CORE(MpId)) {
 205       mGlobalVariableBase = GlobalVariableBase;
 206       if (ArmIsMpCore()) {
 207         ArmCpuSynchronizeSignal (ARM_CPU_EVENT_DEFAULT);
 208       }
 209     } else {
 210       // Wait the Primay core has defined the address of the Global Variable region
 211       ArmCpuSynchronizeWait (ARM_CPU_EVENT_DEFAULT);
 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 }