1 | /** @file
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2 |
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3 | Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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4 | SPDX-License-Identifier: BSD-2-Clause-Patent
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5 |
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6 | **/
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7 |
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8 | #include "UefiPayloadEntry.h"
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9 |
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10 | #define MEMORY_ATTRIBUTE_MASK (EFI_RESOURCE_ATTRIBUTE_PRESENT | \
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11 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \
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12 | EFI_RESOURCE_ATTRIBUTE_TESTED | \
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13 | EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED | \
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14 | EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED | \
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15 | EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED | \
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16 | EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTED | \
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17 | EFI_RESOURCE_ATTRIBUTE_16_BIT_IO | \
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18 | EFI_RESOURCE_ATTRIBUTE_32_BIT_IO | \
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19 | EFI_RESOURCE_ATTRIBUTE_64_BIT_IO | \
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20 | EFI_RESOURCE_ATTRIBUTE_PERSISTENT )
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21 |
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22 | #define TESTED_MEMORY_ATTRIBUTES (EFI_RESOURCE_ATTRIBUTE_PRESENT | \
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23 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \
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24 | EFI_RESOURCE_ATTRIBUTE_TESTED )
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25 |
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26 | extern VOID *mHobList;
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27 |
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28 | /**
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29 | Print all HOBs info from the HOB list.
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30 |
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31 | @return The pointer to the HOB list.
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32 | **/
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33 | VOID
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34 | PrintHob (
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35 | IN CONST VOID *HobStart
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36 | );
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37 |
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38 | /**
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39 | Some bootloader may pass a pcd database, and UPL also contain a PCD database.
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40 | Dxe PCD driver has the assumption that the two PCD database can be catenated and
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41 | the local token number should be successive.
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42 | This function will fix up the UPL PCD database to meet that assumption.
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43 |
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44 | @param[in] DxeFv The FV where to find the Universal PCD database.
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45 |
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46 | @retval EFI_SUCCESS If it completed successfully.
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47 | @retval other Failed to fix up.
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48 | **/
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49 | EFI_STATUS
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50 | FixUpPcdDatabase (
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51 | IN EFI_FIRMWARE_VOLUME_HEADER *DxeFv
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52 | )
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53 | {
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54 | EFI_STATUS Status;
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55 | EFI_FFS_FILE_HEADER *FileHeader;
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56 | VOID *PcdRawData;
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57 | PEI_PCD_DATABASE *PeiDatabase;
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58 | PEI_PCD_DATABASE *UplDatabase;
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59 | EFI_HOB_GUID_TYPE *GuidHob;
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60 | DYNAMICEX_MAPPING *ExMapTable;
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61 | UINTN Index;
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62 |
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63 | GuidHob = GetFirstGuidHob (&gPcdDataBaseHobGuid);
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64 | if (GuidHob == NULL) {
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65 | //
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66 | // No fix-up is needed.
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67 | //
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68 | return EFI_SUCCESS;
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69 | }
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70 |
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71 | PeiDatabase = (PEI_PCD_DATABASE *)GET_GUID_HOB_DATA (GuidHob);
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72 | DEBUG ((DEBUG_INFO, "Find the Pei PCD data base, the total local token number is %d\n", PeiDatabase->LocalTokenCount));
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73 |
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74 | Status = FvFindFileByTypeGuid (DxeFv, EFI_FV_FILETYPE_DRIVER, PcdGetPtr (PcdPcdDriverFile), &FileHeader);
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75 | ASSERT_EFI_ERROR (Status);
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76 | if (EFI_ERROR (Status)) {
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77 | return Status;
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78 | }
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79 |
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80 | Status = FileFindSection (FileHeader, EFI_SECTION_RAW, &PcdRawData);
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81 | ASSERT_EFI_ERROR (Status);
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82 | if (EFI_ERROR (Status)) {
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83 | return Status;
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84 | }
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85 |
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86 | UplDatabase = (PEI_PCD_DATABASE *)PcdRawData;
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87 | ExMapTable = (DYNAMICEX_MAPPING *)(UINTN)((UINTN)PcdRawData + UplDatabase->ExMapTableOffset);
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88 |
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89 | for (Index = 0; Index < UplDatabase->ExTokenCount; Index++) {
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90 | ExMapTable[Index].TokenNumber += PeiDatabase->LocalTokenCount;
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91 | }
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92 |
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93 | DEBUG ((DEBUG_INFO, "Fix up UPL PCD database successfully\n"));
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94 | return EFI_SUCCESS;
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95 | }
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96 |
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97 | /**
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98 | Add HOB into HOB list
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99 |
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100 | @param[in] Hob The HOB to be added into the HOB list.
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101 | **/
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102 | VOID
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103 | AddNewHob (
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104 | IN EFI_PEI_HOB_POINTERS *Hob
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105 | )
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106 | {
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107 | EFI_PEI_HOB_POINTERS NewHob;
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108 |
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109 | if (Hob->Raw == NULL) {
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110 | return;
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111 | }
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112 |
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113 | NewHob.Header = CreateHob (Hob->Header->HobType, Hob->Header->HobLength);
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114 | ASSERT (NewHob.Header != NULL);
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115 | if (NewHob.Header == NULL) {
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116 | return;
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117 | }
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118 |
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119 | CopyMem (NewHob.Header + 1, Hob->Header + 1, Hob->Header->HobLength - sizeof (EFI_HOB_GENERIC_HEADER));
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120 | }
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121 |
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122 | /**
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123 | Found the Resource Descriptor HOB that contains a range (Base, Top)
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124 |
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125 | @param[in] HobList Hob start address
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126 | @param[in] Base Memory start address
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127 | @param[in] Top Memory end address.
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128 |
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129 | @retval The pointer to the Resource Descriptor HOB.
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130 | **/
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131 | EFI_HOB_RESOURCE_DESCRIPTOR *
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132 | FindResourceDescriptorByRange (
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133 | IN VOID *HobList,
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134 | IN EFI_PHYSICAL_ADDRESS Base,
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135 | IN EFI_PHYSICAL_ADDRESS Top
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136 | )
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137 | {
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138 | EFI_PEI_HOB_POINTERS Hob;
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139 | EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;
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140 |
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141 | for (Hob.Raw = (UINT8 *)HobList; !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
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142 | //
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143 | // Skip all HOBs except Resource Descriptor HOBs
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144 | //
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145 | if (GET_HOB_TYPE (Hob) != EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
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146 | continue;
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147 | }
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148 |
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149 | //
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150 | // Skip Resource Descriptor HOBs that do not describe tested system memory
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151 | //
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152 | ResourceHob = Hob.ResourceDescriptor;
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153 | if (ResourceHob->ResourceType != EFI_RESOURCE_SYSTEM_MEMORY) {
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154 | continue;
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155 | }
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156 |
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157 | if ((ResourceHob->ResourceAttribute & MEMORY_ATTRIBUTE_MASK) != TESTED_MEMORY_ATTRIBUTES) {
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158 | continue;
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159 | }
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160 |
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161 | //
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162 | // Skip Resource Descriptor HOBs that do not contain the PHIT range EfiFreeMemoryBottom..EfiFreeMemoryTop
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163 | //
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164 | if (Base < ResourceHob->PhysicalStart) {
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165 | continue;
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166 | }
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167 |
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168 | if (Top > (ResourceHob->PhysicalStart + ResourceHob->ResourceLength)) {
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169 | continue;
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170 | }
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171 |
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172 | return ResourceHob;
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173 | }
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174 |
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175 | return NULL;
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176 | }
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177 |
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178 | /**
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179 | Find the highest below 4G memory resource descriptor, except the input Resource Descriptor.
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180 |
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181 | @param[in] HobList Hob start address
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182 | @param[in] MinimalNeededSize Minimal needed size.
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183 | @param[in] ExceptResourceHob Ignore this Resource Descriptor.
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184 |
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185 | @retval The pointer to the Resource Descriptor HOB.
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186 | **/
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187 | EFI_HOB_RESOURCE_DESCRIPTOR *
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188 | FindAnotherHighestBelow4GResourceDescriptor (
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189 | IN VOID *HobList,
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190 | IN UINTN MinimalNeededSize,
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191 | IN EFI_HOB_RESOURCE_DESCRIPTOR *ExceptResourceHob
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192 | )
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193 | {
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194 | EFI_PEI_HOB_POINTERS Hob;
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195 | EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;
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196 | EFI_HOB_RESOURCE_DESCRIPTOR *ReturnResourceHob;
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197 |
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198 | ReturnResourceHob = NULL;
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199 |
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200 | for (Hob.Raw = (UINT8 *)HobList; !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
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201 | //
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202 | // Skip all HOBs except Resource Descriptor HOBs
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203 | //
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204 | if (GET_HOB_TYPE (Hob) != EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
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205 | continue;
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206 | }
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207 |
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208 | //
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209 | // Skip Resource Descriptor HOBs that do not describe tested system memory
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210 | //
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211 | ResourceHob = Hob.ResourceDescriptor;
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212 | if (ResourceHob->ResourceType != EFI_RESOURCE_SYSTEM_MEMORY) {
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213 | continue;
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214 | }
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215 |
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216 | if ((ResourceHob->ResourceAttribute & MEMORY_ATTRIBUTE_MASK) != TESTED_MEMORY_ATTRIBUTES) {
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217 | continue;
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218 | }
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219 |
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220 | //
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221 | // Skip if the Resource Descriptor HOB equals to ExceptResourceHob
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222 | //
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223 | if (ResourceHob == ExceptResourceHob) {
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224 | continue;
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225 | }
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226 |
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227 | //
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228 | // Skip Resource Descriptor HOBs that are beyond 4G
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229 | //
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230 | if ((ResourceHob->PhysicalStart + ResourceHob->ResourceLength) > BASE_4GB) {
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231 | continue;
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232 | }
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233 |
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234 | //
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235 | // Skip Resource Descriptor HOBs that are too small
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236 | //
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237 | if (ResourceHob->ResourceLength < MinimalNeededSize) {
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238 | continue;
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239 | }
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240 |
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241 | //
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242 | // Return the topest Resource Descriptor
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243 | //
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244 | if (ReturnResourceHob == NULL) {
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245 | ReturnResourceHob = ResourceHob;
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246 | } else {
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247 | if (ReturnResourceHob->PhysicalStart < ResourceHob->PhysicalStart) {
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248 | ReturnResourceHob = ResourceHob;
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249 | }
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250 | }
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251 | }
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252 |
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253 | return ReturnResourceHob;
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254 | }
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255 |
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256 | /**
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257 | Check the HOB and decide if it is need inside Payload
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258 |
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259 | Payload maintainer may make decision which HOB is need or needn't
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260 | Then add the check logic in the function.
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261 |
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262 | @param[in] Hob The HOB to check
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263 |
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264 | @retval TRUE If HOB is need inside Payload
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265 | @retval FALSE If HOB is needn't inside Payload
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266 | **/
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267 | BOOLEAN
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268 | IsHobNeed (
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269 | EFI_PEI_HOB_POINTERS Hob
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270 | )
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271 | {
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272 | if (Hob.Header->HobType == EFI_HOB_TYPE_HANDOFF) {
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273 | return FALSE;
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274 | }
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275 |
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276 | if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
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277 | if (CompareGuid (&Hob.MemoryAllocationModule->MemoryAllocationHeader.Name, &gEfiHobMemoryAllocModuleGuid)) {
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278 | return FALSE;
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279 | }
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280 | }
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281 |
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282 | // Arrive here mean the HOB is need
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283 | return TRUE;
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284 | }
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285 |
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286 | /**
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287 | It will build HOBs based on information from bootloaders.
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288 |
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289 | @param[in] BootloaderParameter The starting memory address of bootloader parameter block.
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290 | @param[out] DxeFv The pointer to the DXE FV in memory.
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291 |
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292 | @retval EFI_SUCCESS If it completed successfully.
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293 | @retval Others If it failed to build required HOBs.
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294 | **/
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295 | EFI_STATUS
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296 | BuildHobs (
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297 | IN UINTN BootloaderParameter,
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298 | OUT EFI_FIRMWARE_VOLUME_HEADER **DxeFv
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299 | )
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300 | {
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301 | EFI_PEI_HOB_POINTERS Hob;
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302 | UINTN MinimalNeededSize;
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303 | EFI_PHYSICAL_ADDRESS FreeMemoryBottom;
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304 | EFI_PHYSICAL_ADDRESS FreeMemoryTop;
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305 | EFI_PHYSICAL_ADDRESS MemoryBottom;
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306 | EFI_PHYSICAL_ADDRESS MemoryTop;
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307 | EFI_HOB_RESOURCE_DESCRIPTOR *PhitResourceHob;
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308 | EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;
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309 | UNIVERSAL_PAYLOAD_EXTRA_DATA *ExtraData;
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310 | UINT8 *GuidHob;
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311 | EFI_HOB_FIRMWARE_VOLUME *FvHob;
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312 | UNIVERSAL_PAYLOAD_ACPI_TABLE *AcpiTable;
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313 | ACPI_BOARD_INFO *AcpiBoardInfo;
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314 | EFI_HOB_HANDOFF_INFO_TABLE *HobInfo;
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315 | UINT8 Idx;
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316 |
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317 | Hob.Raw = (UINT8 *)BootloaderParameter;
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318 | MinimalNeededSize = FixedPcdGet32 (PcdSystemMemoryUefiRegionSize);
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319 |
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320 | ASSERT (Hob.Raw != NULL);
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321 | ASSERT ((UINTN)Hob.HandoffInformationTable->EfiFreeMemoryTop == Hob.HandoffInformationTable->EfiFreeMemoryTop);
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322 | ASSERT ((UINTN)Hob.HandoffInformationTable->EfiMemoryTop == Hob.HandoffInformationTable->EfiMemoryTop);
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323 | ASSERT ((UINTN)Hob.HandoffInformationTable->EfiFreeMemoryBottom == Hob.HandoffInformationTable->EfiFreeMemoryBottom);
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324 | ASSERT ((UINTN)Hob.HandoffInformationTable->EfiMemoryBottom == Hob.HandoffInformationTable->EfiMemoryBottom);
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325 |
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326 | //
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327 | // Try to find Resource Descriptor HOB that contains Hob range EfiMemoryBottom..EfiMemoryTop
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328 | //
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329 | PhitResourceHob = FindResourceDescriptorByRange (Hob.Raw, Hob.HandoffInformationTable->EfiMemoryBottom, Hob.HandoffInformationTable->EfiMemoryTop);
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330 | if (PhitResourceHob == NULL) {
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331 | //
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332 | // Boot loader's Phit Hob is not in an available Resource Descriptor, find another Resource Descriptor for new Phit Hob
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333 | //
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334 | ResourceHob = FindAnotherHighestBelow4GResourceDescriptor (Hob.Raw, MinimalNeededSize, NULL);
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335 | if (ResourceHob == NULL) {
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336 | return EFI_NOT_FOUND;
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337 | }
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338 |
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339 | MemoryBottom = ResourceHob->PhysicalStart + ResourceHob->ResourceLength - MinimalNeededSize;
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340 | FreeMemoryBottom = MemoryBottom;
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341 | FreeMemoryTop = ResourceHob->PhysicalStart + ResourceHob->ResourceLength;
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342 | MemoryTop = FreeMemoryTop;
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343 | } else if (PhitResourceHob->PhysicalStart + PhitResourceHob->ResourceLength - Hob.HandoffInformationTable->EfiMemoryTop >= MinimalNeededSize) {
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344 | //
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345 | // New availiable Memory range in new hob is right above memory top in old hob.
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346 | //
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347 | MemoryBottom = Hob.HandoffInformationTable->EfiFreeMemoryTop;
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348 | FreeMemoryBottom = Hob.HandoffInformationTable->EfiMemoryTop;
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349 | FreeMemoryTop = FreeMemoryBottom + MinimalNeededSize;
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350 | MemoryTop = FreeMemoryTop;
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351 | } else if (Hob.HandoffInformationTable->EfiMemoryBottom - PhitResourceHob->PhysicalStart >= MinimalNeededSize) {
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352 | //
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353 | // New availiable Memory range in new hob is right below memory bottom in old hob.
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354 | //
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355 | MemoryBottom = Hob.HandoffInformationTable->EfiMemoryBottom - MinimalNeededSize;
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356 | FreeMemoryBottom = MemoryBottom;
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357 | FreeMemoryTop = Hob.HandoffInformationTable->EfiMemoryBottom;
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358 | MemoryTop = Hob.HandoffInformationTable->EfiMemoryTop;
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359 | } else {
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360 | //
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361 | // In the Resource Descriptor HOB contains boot loader Hob, there is no enough free memory size for payload hob
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362 | // Find another Resource Descriptor Hob
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363 | //
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364 | ResourceHob = FindAnotherHighestBelow4GResourceDescriptor (Hob.Raw, MinimalNeededSize, PhitResourceHob);
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365 | if (ResourceHob == NULL) {
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366 | return EFI_NOT_FOUND;
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367 | }
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368 |
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369 | MemoryBottom = ResourceHob->PhysicalStart + ResourceHob->ResourceLength - MinimalNeededSize;
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370 | FreeMemoryBottom = MemoryBottom;
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371 | FreeMemoryTop = ResourceHob->PhysicalStart + ResourceHob->ResourceLength;
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372 | MemoryTop = FreeMemoryTop;
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373 | }
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374 |
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375 | HobInfo = HobConstructor ((VOID *)(UINTN)MemoryBottom, (VOID *)(UINTN)MemoryTop, (VOID *)(UINTN)FreeMemoryBottom, (VOID *)(UINTN)FreeMemoryTop);
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376 | HobInfo->BootMode = Hob.HandoffInformationTable->BootMode;
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377 | //
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378 | // From now on, mHobList will point to the new Hob range.
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379 | //
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380 |
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381 | //
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382 | // Create an empty FvHob for the DXE FV that contains DXE core.
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383 | //
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384 | BuildFvHob ((EFI_PHYSICAL_ADDRESS)0, 0);
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385 | //
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386 | // Since payload created new Hob, move all hobs except PHIT from boot loader hob list.
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387 | //
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388 | while (!END_OF_HOB_LIST (Hob)) {
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389 | if (IsHobNeed (Hob)) {
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390 | // Add this hob to payload HOB
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391 | AddNewHob (&Hob);
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392 | }
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393 |
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394 | Hob.Raw = GET_NEXT_HOB (Hob);
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395 | }
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396 |
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397 | //
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398 | // Get DXE FV location
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399 | //
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400 | GuidHob = GetFirstGuidHob (&gUniversalPayloadExtraDataGuid);
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401 | ASSERT (GuidHob != NULL);
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402 | ExtraData = (UNIVERSAL_PAYLOAD_EXTRA_DATA *)GET_GUID_HOB_DATA (GuidHob);
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403 | DEBUG ((DEBUG_INFO, "Multiple Fv Count=%d\n", ExtraData->Count));
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404 | ASSERT (AsciiStrCmp (ExtraData->Entry[0].Identifier, "uefi_fv") == 0);
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405 |
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406 | *DxeFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)ExtraData->Entry[0].Base;
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407 | ASSERT ((*DxeFv)->FvLength == ExtraData->Entry[0].Size);
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408 | //
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409 | // support multiple FVs provided by UPL
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410 | //
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411 | for (Idx = 1; Idx < ExtraData->Count; Idx++) {
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412 | BuildFvHob (ExtraData->Entry[Idx].Base, ExtraData->Entry[Idx].Size);
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413 | DEBUG ((
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414 | DEBUG_INFO,
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415 | "UPL Multiple fv[%d], Base=0x%x, size=0x%x\n",
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416 | Idx,
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417 | ExtraData->Entry[Idx].Base,
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418 | ExtraData->Entry[Idx].Size
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419 | ));
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420 | }
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421 |
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422 | //
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423 | // Create guid hob for acpi board information
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424 | //
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425 | GuidHob = GetFirstGuidHob (&gUniversalPayloadAcpiTableGuid);
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426 | if (GuidHob != NULL) {
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427 | AcpiTable = (UNIVERSAL_PAYLOAD_ACPI_TABLE *)GET_GUID_HOB_DATA (GuidHob);
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428 | GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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429 | if (GuidHob == NULL) {
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430 | AcpiBoardInfo = BuildHobFromAcpi ((UINT64)AcpiTable->Rsdp);
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431 | ASSERT (AcpiBoardInfo != NULL);
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432 | }
|
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433 | }
|
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434 |
|
---|
435 | //
|
---|
436 | // Update DXE FV information to first fv hob in the hob list, which
|
---|
437 | // is the empty FvHob created before.
|
---|
438 | //
|
---|
439 | FvHob = GetFirstHob (EFI_HOB_TYPE_FV);
|
---|
440 | FvHob->BaseAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)*DxeFv;
|
---|
441 | FvHob->Length = (*DxeFv)->FvLength;
|
---|
442 | return EFI_SUCCESS;
|
---|
443 | }
|
---|
444 |
|
---|
445 | /**
|
---|
446 | Entry point to the C language phase of UEFI payload.
|
---|
447 |
|
---|
448 | @param[in] BootloaderParameter The starting address of bootloader parameter block.
|
---|
449 |
|
---|
450 | @retval It will not return if SUCCESS, and return error when passing bootloader parameter.
|
---|
451 | **/
|
---|
452 | EFI_STATUS
|
---|
453 | EFIAPI
|
---|
454 | _ModuleEntryPoint (
|
---|
455 | IN UINTN BootloaderParameter
|
---|
456 | )
|
---|
457 | {
|
---|
458 | EFI_STATUS Status;
|
---|
459 | PHYSICAL_ADDRESS DxeCoreEntryPoint;
|
---|
460 | EFI_PEI_HOB_POINTERS Hob;
|
---|
461 | EFI_FIRMWARE_VOLUME_HEADER *DxeFv;
|
---|
462 |
|
---|
463 | mHobList = (VOID *)BootloaderParameter;
|
---|
464 | DxeFv = NULL;
|
---|
465 | // Call constructor for all libraries
|
---|
466 | ProcessLibraryConstructorList ();
|
---|
467 |
|
---|
468 | DEBUG ((DEBUG_INFO, "Entering Universal Payload...\n"));
|
---|
469 | DEBUG ((DEBUG_INFO, "sizeof(UINTN) = 0x%x\n", sizeof (UINTN)));
|
---|
470 |
|
---|
471 | DEBUG_CODE (
|
---|
472 | //
|
---|
473 | // Dump the Hobs from boot loader
|
---|
474 | //
|
---|
475 | PrintHob (mHobList);
|
---|
476 | );
|
---|
477 |
|
---|
478 | // Initialize floating point operating environment to be compliant with UEFI spec.
|
---|
479 | InitializeFloatingPointUnits ();
|
---|
480 |
|
---|
481 | // Build HOB based on information from Bootloader
|
---|
482 | Status = BuildHobs (BootloaderParameter, &DxeFv);
|
---|
483 | ASSERT_EFI_ERROR (Status);
|
---|
484 |
|
---|
485 | FixUpPcdDatabase (DxeFv);
|
---|
486 | Status = UniversalLoadDxeCore (DxeFv, &DxeCoreEntryPoint);
|
---|
487 | ASSERT_EFI_ERROR (Status);
|
---|
488 |
|
---|
489 | //
|
---|
490 | // Mask off all legacy 8259 interrupt sources
|
---|
491 | //
|
---|
492 | IoWrite8 (LEGACY_8259_MASK_REGISTER_MASTER, 0xFF);
|
---|
493 | IoWrite8 (LEGACY_8259_MASK_REGISTER_SLAVE, 0xFF);
|
---|
494 |
|
---|
495 | Hob.HandoffInformationTable = (EFI_HOB_HANDOFF_INFO_TABLE *)GetFirstHob (EFI_HOB_TYPE_HANDOFF);
|
---|
496 | HandOffToDxeCore (DxeCoreEntryPoint, Hob);
|
---|
497 |
|
---|
498 | // Should not get here
|
---|
499 | CpuDeadLoop ();
|
---|
500 | return EFI_SUCCESS;
|
---|
501 | }
|
---|