summaryrefslogtreecommitdiff
path: root/ArmPkg/Application/LinuxLoader/LinuxLoaderHelper.c
blob: 4d7a8445843147c630d1ef8dc6155e88a354b52a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/** @file
*
*  Copyright (c) 2011-2015, ARM Limited. All rights reserved.
*
*  This program and the accompanying materials
*  are licensed and made available under the terms and conditions of the BSD License
*  which accompanies this distribution.  The full text of the license may be found at
*  http://opensource.org/licenses/bsd-license.php
*
*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/

#include <PiDxe.h>
#include <Library/HobLib.h>
#include <Library/TimerLib.h>
#include <Library/SerialPortLib.h>

#include "LinuxLoader.h"

STATIC CONST CHAR8 *mTokenList[] = {
  /*"SEC",*/
  "PEI",
  "DXE",
  "BDS",
  NULL
};

VOID
PrintPerformance (
  VOID
  )
{
  UINTN       Key;
  CONST VOID  *Handle;
  CONST CHAR8 *Token, *Module;
  UINT64      Start, Stop, TimeStamp;
  UINT64      Delta, TicksPerSecond, Milliseconds;
  UINTN       Index;
  CHAR8       Buffer[100];
  UINTN       CharCount;
  BOOLEAN     CountUp;

  TicksPerSecond = GetPerformanceCounterProperties (&Start, &Stop);
  if (Start < Stop) {
    CountUp = TRUE;
  } else {
    CountUp = FALSE;
  }

  TimeStamp = 0;
  Key       = 0;
  do {
    Key = GetPerformanceMeasurement (Key, (CONST VOID **)&Handle, &Token, &Module, &Start, &Stop);
    if (Key != 0) {
      for (Index = 0; mTokenList[Index] != NULL; Index++) {
        if (AsciiStriCmp (mTokenList[Index], Token) == 0) {
          Delta = CountUp ? (Stop - Start) : (Start - Stop);
          TimeStamp += Delta;
          Milliseconds = DivU64x64Remainder (MultU64x32 (Delta, 1000), TicksPerSecond, NULL);
          CharCount = AsciiSPrint (Buffer, sizeof (Buffer), "%6a %6ld ms\n", Token, Milliseconds);
          SerialPortWrite ((UINT8 *) Buffer, CharCount);
          break;
        }
      }
    }
  } while (Key != 0);

  CharCount = AsciiSPrint (Buffer, sizeof (Buffer), "Total Time = %ld ms\n\n",
      DivU64x64Remainder (MultU64x32 (TimeStamp, 1000), TicksPerSecond, NULL));
  SerialPortWrite ((UINT8 *) Buffer, CharCount);
}

STATIC
EFI_STATUS
InsertSystemMemoryResources (
  LIST_ENTRY *ResourceList,
  EFI_HOB_RESOURCE_DESCRIPTOR *ResHob
  )
{
  SYSTEM_MEMORY_RESOURCE  *NewResource;
  LIST_ENTRY              *Link;
  LIST_ENTRY              *NextLink;
  LIST_ENTRY              AttachedResources;
  SYSTEM_MEMORY_RESOURCE  *Resource;
  EFI_PHYSICAL_ADDRESS    NewResourceEnd;

  if (IsListEmpty (ResourceList)) {
    NewResource = AllocateZeroPool (sizeof (SYSTEM_MEMORY_RESOURCE));
    NewResource->PhysicalStart = ResHob->PhysicalStart;
    NewResource->ResourceLength = ResHob->ResourceLength;
    InsertTailList (ResourceList, &NewResource->Link);
    return EFI_SUCCESS;
  }

  InitializeListHead (&AttachedResources);

  Link = ResourceList->ForwardLink;
  ASSERT (Link != NULL);
  while (Link != ResourceList) {
    Resource = (SYSTEM_MEMORY_RESOURCE*)Link;

    // Sanity Check. The resources should not overlapped.
    ASSERT (!((ResHob->PhysicalStart >= Resource->PhysicalStart) && (ResHob->PhysicalStart < (Resource->PhysicalStart + Resource->ResourceLength))));
    ASSERT (!((ResHob->PhysicalStart + ResHob->ResourceLength - 1 >= Resource->PhysicalStart) &&
        ((ResHob->PhysicalStart + ResHob->ResourceLength - 1) < (Resource->PhysicalStart + Resource->ResourceLength))));

    // The new resource is attached after this resource descriptor
    if (ResHob->PhysicalStart == Resource->PhysicalStart + Resource->ResourceLength) {
      Resource->ResourceLength =  Resource->ResourceLength + ResHob->ResourceLength;

      NextLink = RemoveEntryList (&Resource->Link);
      InsertTailList (&AttachedResources, &Resource->Link);
      Link = NextLink;
    }
    // The new resource is attached before this resource descriptor
    else if (ResHob->PhysicalStart + ResHob->ResourceLength == Resource->PhysicalStart) {
      Resource->PhysicalStart = ResHob->PhysicalStart;
      Resource->ResourceLength =  Resource->ResourceLength + ResHob->ResourceLength;

      NextLink = RemoveEntryList (&Resource->Link);
      InsertTailList (&AttachedResources, &Resource->Link);
      Link = NextLink;
    } else {
      Link = Link->ForwardLink;
    }
  }

  if (!IsListEmpty (&AttachedResources)) {
    // See if we can merge the attached resource with other resources

    NewResource = (SYSTEM_MEMORY_RESOURCE*)GetFirstNode (&AttachedResources);
    Link = RemoveEntryList (&NewResource->Link);
    while (!IsListEmpty (&AttachedResources)) {
      // Merge resources
      Resource = (SYSTEM_MEMORY_RESOURCE*)Link;

      // Ensure they overlap each other
      ASSERT (
          ((NewResource->PhysicalStart >= Resource->PhysicalStart) && (NewResource->PhysicalStart < (Resource->PhysicalStart + Resource->ResourceLength))) ||
          (((NewResource->PhysicalStart + NewResource->ResourceLength) >= Resource->PhysicalStart) && ((NewResource->PhysicalStart + NewResource->ResourceLength) < (Resource->PhysicalStart + Resource->ResourceLength)))
      );

      NewResourceEnd = MAX (NewResource->PhysicalStart + NewResource->ResourceLength, Resource->PhysicalStart + Resource->ResourceLength);
      NewResource->PhysicalStart = MIN (NewResource->PhysicalStart, Resource->PhysicalStart);
      NewResource->ResourceLength = NewResourceEnd - NewResource->PhysicalStart;

      Link = RemoveEntryList (Link);
    }
  } else {
    // None of the Resource of the list is attached to this ResHob. Create a new entry for it
    NewResource = AllocateZeroPool (sizeof (SYSTEM_MEMORY_RESOURCE));
    NewResource->PhysicalStart = ResHob->PhysicalStart;
    NewResource->ResourceLength = ResHob->ResourceLength;
  }
  InsertTailList (ResourceList, &NewResource->Link);
  return EFI_SUCCESS;
}

EFI_STATUS
GetSystemMemoryResources (
  IN  LIST_ENTRY *ResourceList
  )
{
  EFI_HOB_RESOURCE_DESCRIPTOR *ResHob;

  InitializeListHead (ResourceList);

  // Find the first System Memory Resource Descriptor
  ResHob = (EFI_HOB_RESOURCE_DESCRIPTOR *)GetFirstHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR);
  while ((ResHob != NULL) && (ResHob->ResourceType != EFI_RESOURCE_SYSTEM_MEMORY)) {
    ResHob = (EFI_HOB_RESOURCE_DESCRIPTOR *)GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, (VOID *)((UINTN)ResHob + ResHob->Header.HobLength));
  }

  // Did not find any
  if (ResHob == NULL) {
    return EFI_NOT_FOUND;
  } else {
    InsertSystemMemoryResources (ResourceList, ResHob);
  }

  ResHob = (EFI_HOB_RESOURCE_DESCRIPTOR *)GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, (VOID *)((UINTN)ResHob + ResHob->Header.HobLength));
  while (ResHob != NULL) {
    if (ResHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
      InsertSystemMemoryResources (ResourceList, ResHob);
    }
    ResHob = (EFI_HOB_RESOURCE_DESCRIPTOR *)GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, (VOID *)((UINTN)ResHob + ResHob->Header.HobLength));
  }

  return EFI_SUCCESS;
}