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a6eaba4d 1/** @file\r
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2 SLIT table parser\r
3\r
4 Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.\r
5 This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13 @par Reference(s):\r
14 - ACPI 6.2 Specification - Errata A, September 2017\r
15**/\r
16\r
17#include <IndustryStandard/Acpi.h>\r
18#include <Library/PrintLib.h>\r
19#include <Library/UefiLib.h>\r
20#include "AcpiParser.h"\r
21#include "AcpiTableParser.h"\r
22\r
23// Local Variables\r
24STATIC CONST UINT64* SlitSystemLocalityCount;\r
25STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;\r
26\r
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27/**\r
28 An ACPI_PARSER array describing the ACPI SLIT table.\r
29**/\r
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30STATIC CONST ACPI_PARSER SlitParser[] = {\r
31 PARSE_ACPI_HEADER (&AcpiHdrInfo),\r
32 {L"Number of System Localities", 8, 36, L"0x%lx", NULL,\r
33 (VOID**)&SlitSystemLocalityCount, NULL, NULL}\r
34};\r
35\r
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36/**\r
37 Macro to get the value of a System Locality\r
38**/\r
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39#define SLIT_ELEMENT(Ptr, i, j) *(Ptr + (i * LocalityCount) + j)\r
40\r
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41/**\r
42 This function parses the ACPI SLIT table.\r
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43 When trace is enabled this function parses the SLIT table and\r
44 traces the ACPI table fields.\r
45\r
46 This function also validates System Localities for the following:\r
47 - Diagonal elements have a normalized value of 10\r
48 - Relative distance from System Locality at i*N+j is same as\r
49 j*N+i\r
50\r
51 @param [in] Trace If TRUE, trace the ACPI fields.\r
52 @param [in] Ptr Pointer to the start of the buffer.\r
53 @param [in] AcpiTableLength Length of the ACPI table.\r
54 @param [in] AcpiTableRevision Revision of the ACPI table.\r
a6eaba4d 55**/\r
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56VOID\r
57EFIAPI\r
58ParseAcpiSlit (\r
59 IN BOOLEAN Trace,\r
60 IN UINT8* Ptr,\r
61 IN UINT32 AcpiTableLength,\r
62 IN UINT8 AcpiTableRevision\r
63 )\r
64{\r
65 UINT32 Offset;\r
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66 UINT64 Count;\r
67 UINT64 Index;\r
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68 UINT64 LocalityCount;\r
69 UINT8* LocalityPtr;\r
70 CHAR16 Buffer[80]; // Used for AsciiName param of ParseAcpi\r
71\r
72 if (!Trace) {\r
73 return;\r
74 }\r
75\r
76 Offset = ParseAcpi (\r
77 TRUE,\r
78 0,\r
79 "SLIT",\r
80 Ptr,\r
81 AcpiTableLength,\r
82 PARSER_PARAMS (SlitParser)\r
83 );\r
84 LocalityPtr = Ptr + Offset;\r
85\r
86 LocalityCount = *SlitSystemLocalityCount;\r
87 // We only print the Localities if the count is less than 16\r
88 // If the locality count is more than 16 then refer to the\r
89 // raw data dump.\r
90 if (LocalityCount < 16) {\r
91 UnicodeSPrint (\r
92 Buffer,\r
93 sizeof (Buffer),\r
94 L"Entry[0x%lx][0x%lx]",\r
95 LocalityCount,\r
96 LocalityCount\r
97 );\r
98 PrintFieldName (0, Buffer);\r
99 Print (L"\n");\r
100 Print (L" ");\r
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101 for (Index = 0; Index < LocalityCount; Index++) {\r
102 Print (L" (%3d) ", Index);\r
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103 }\r
104 Print (L"\n");\r
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105 for (Count = 0; Count< LocalityCount; Count++) {\r
106 Print (L" (%3d) ", Count);\r
107 for (Index = 0; Index < LocalityCount; Index++) {\r
108 Print (L" %3d ", SLIT_ELEMENT (LocalityPtr, Count, Index));\r
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109 }\r
110 Print (L"\n");\r
111 }\r
112 }\r
113\r
114 // Validate\r
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115 for (Count = 0; Count < LocalityCount; Count++) {\r
116 for (Index = 0; Index < LocalityCount; Index++) {\r
ee4dc24f 117 // Element[x][x] must be equal to 10\r
f75c7478 118 if ((Count == Index) && (SLIT_ELEMENT (LocalityPtr, Count,Index) != 10)) {\r
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119 IncrementErrorCount ();\r
120 Print (\r
121 L"ERROR: Diagonal Element[0x%lx][0x%lx] (%3d)."\r
e6f958d1 122 L" Normalized Value is not 10\n",\r
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123 Count,\r
124 Index,\r
125 SLIT_ELEMENT (LocalityPtr, Count, Index)\r
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126 );\r
127 }\r
128 // Element[i][j] must be equal to Element[j][i]\r
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129 if (SLIT_ELEMENT (LocalityPtr, Count, Index) !=\r
130 SLIT_ELEMENT (LocalityPtr, Index, Count)) {\r
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131 IncrementErrorCount ();\r
132 Print (\r
133 L"ERROR: Relative distances for Element[0x%lx][0x%lx] (%3d) and \n"\r
e6f958d1 134 L"Element[0x%lx][0x%lx] (%3d) do not match.\n",\r
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135 Count,\r
136 Index,\r
137 SLIT_ELEMENT (LocalityPtr, Count, Index),\r
138 Index,\r
139 Count,\r
140 SLIT_ELEMENT (LocalityPtr, Index, Count)\r
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141 );\r
142 }\r
143 }\r
144 }\r
145}\r