UnixPkg/UnixAutoScanPei/UnixAutoScan.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2008, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13   UnixAutoscan.c
  14
  15 Abstract:
  16   This PEIM to abstract memory auto-scan in an Unix environment.
  17
  18 Revision History
  19
  20 --*/
  21
  22 #include "PiPei.h"
  23 #include <Ppi/UnixAutoScan.h>
  24 #include <Ppi/BaseMemoryTest.h>
  25 #include <Ppi/MemoryDiscovered.h>
  26
  27 #include <Library/DebugLib.h>
  28 #include <Library/PeimEntryPoint.h>
  29 #include <Library/BaseLib.h>
  30 #include <Library/BaseMemoryLib.h>
  31 #include <Library/HobLib.h>
  32 #include <Library/PeiServicesLib.h>
  33 #include <Library/PeiServicesTablePointerLib.h>
  34
  35 EFI_STATUS
  36 EFIAPI
  37 PeimInitializeUnixAutoScan (
  38   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  39   IN EFI_PEI_SERVICES          **PeiServices
  40   )
  41 /*++
  42
  43 Routine Description:
  44   Perform a call-back into the SEC simulator to get a memory value
  45
  46 Arguments:
  47   FfsHeader   - General purpose data available to every PEIM
  48   PeiServices - General purpose services available to every PEIM.
  49
  50 Returns:
  51   None
  52
  53 --*/
  54 {
  55   EFI_STATUS                  Status;
  56   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  57   PEI_UNIX_AUTOSCAN_PPI      *PeiUnixService;
  58   UINT64                      MemorySize;
  59   EFI_PHYSICAL_ADDRESS        MemoryBase;
  60   PEI_BASE_MEMORY_TEST_PPI    *MemoryTestPpi;
  61   EFI_PHYSICAL_ADDRESS        ErrorAddress;
  62   UINTN                       Index;
  63   EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
  64
  65
  66   DEBUG ((EFI_D_ERROR, "Unix Autoscan PEIM Loaded\n"));
  67
  68   //
  69   // Get the PEI UNIX Autoscan PPI
  70   //
  71   Status = (**PeiServices).LocatePpi (
  72                             PeiServices,
  73                             &gPeiUnixAutoScanPpiGuid, // GUID
  74                             0,                      // INSTANCE
  75                             &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  76                             (VOID **)&PeiUnixService           // PPI
  77                             );
  78   ASSERT_EFI_ERROR (Status);
  79
  80   //
  81   // Get the Memory Test PPI
  82   //
  83   Status = (**PeiServices).LocatePpi (
  84                             PeiServices,
  85                             &gPeiBaseMemoryTestPpiGuid,
  86                             0,
  87                             NULL,
  88                             (VOID **)&MemoryTestPpi
  89                             );
  90   ASSERT_EFI_ERROR (Status);
  91
  92   Index = 0;
  93   do {
  94     Status = PeiUnixService->UnixAutoScan (Index, &MemoryBase, &MemorySize);
  95     if (!EFI_ERROR (Status)) {
  96       Attributes =
  97         (
  98           EFI_RESOURCE_ATTRIBUTE_PRESENT |
  99           EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
 100           EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
 101           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
 102           EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
 103           EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
 104         );
 105
 106       if (Index == 0) {
 107         //
 108         // For the first area register it as PEI tested memory
 109         //
 110         Status = MemoryTestPpi->BaseMemoryTest (
 111                                   PeiServices,
 112                                   MemoryTestPpi,
 113                                   MemoryBase,
 114                                   MemorySize,
 115                                   Quick,
 116                                   &ErrorAddress
 117                                   );
 118         ASSERT_EFI_ERROR (Status);
 119
 120         //
 121         // Register the "tested" memory with the PEI Core
 122         //
 123         Status = (**PeiServices).InstallPeiMemory (PeiServices, MemoryBase, MemorySize);
 124         ASSERT_EFI_ERROR (Status);
 125
 126         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
 127       }
 128
 129       BuildResourceDescriptorHob (
 130         EFI_RESOURCE_SYSTEM_MEMORY,
 131         Attributes,
 132         MemoryBase,
 133         MemorySize
 134         );
 135     }
 136     Index++;
 137   } while (!EFI_ERROR (Status));
 138
 139   //
 140   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 141   //
 142   BuildCpuHob (36, 16);
 143
 144   return Status;
 145 }