boot/freeldr/freeldr/arch/archwsup.c

   1 /*
   2  * PROJECT:         ReactOS Boot Loader (FreeLDR)
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            boot/freeldr/freeldr/arch/archwsup.c
   5  * PURPOSE:         Routines for ARC Hardware Tree and Configuration Data
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <freeldr.h>
  12
  13 #include <debug.h>
  14
  15 /* GLOBALS ********************************************************************/
  16
  17 PCONFIGURATION_COMPONENT_DATA FldrArcHwTreeRoot;
  18
  19 // ARC Disk Information
  20 ULONG reactos_disk_count = 0;
  21 ARC_DISK_SIGNATURE_EX reactos_arc_disk_info[32];
  22
  23 /* FUNCTIONS ******************************************************************/
  24
  25 #define TAG_HW_COMPONENT_DATA   'DCwH'
  26 #define TAG_HW_NAME             'mNwH'
  27
  28 VOID
  29 AddReactOSArcDiskInfo(
  30     IN PSTR ArcName,
  31     IN ULONG Signature,
  32     IN ULONG Checksum,
  33     IN BOOLEAN ValidPartitionTable)
  34 {
  35     ASSERT(reactos_disk_count < sizeof(reactos_arc_disk_info)/sizeof(reactos_arc_disk_info[0]));
  36
  37     /* Fill out the ARC disk block */
  38
  39     reactos_arc_disk_info[reactos_disk_count].DiskSignature.Signature = Signature;
  40     reactos_arc_disk_info[reactos_disk_count].DiskSignature.CheckSum = Checksum;
  41     reactos_arc_disk_info[reactos_disk_count].DiskSignature.ValidPartitionTable = ValidPartitionTable;
  42
  43     strcpy(reactos_arc_disk_info[reactos_disk_count].ArcName, ArcName);
  44     reactos_arc_disk_info[reactos_disk_count].DiskSignature.ArcName =
  45         reactos_arc_disk_info[reactos_disk_count].ArcName;
  46
  47     reactos_disk_count++;
  48 }
  49
  50 //
  51 // ARC Component Configuration Routines
  52 //
  53
  54 VOID
  55 NTAPI
  56 FldrSetIdentifier(IN PCONFIGURATION_COMPONENT_DATA ComponentData,
  57                   IN PCHAR IdentifierString)
  58 {
  59     PCONFIGURATION_COMPONENT Component = &ComponentData->ComponentEntry;
  60     SIZE_T IdentifierLength;
  61     PCHAR Identifier;
  62
  63     /* Allocate memory for the identifier */
  64     IdentifierLength = strlen(IdentifierString) + 1;
  65     Identifier = FrLdrHeapAlloc(IdentifierLength, TAG_HW_NAME);
  66     if (!Identifier) return;
  67
  68     /* Copy the identifier */
  69     RtlCopyMemory(Identifier, IdentifierString, IdentifierLength);
  70
  71     /* Set component information */
  72     Component->IdentifierLength = (ULONG)IdentifierLength;
  73     Component->Identifier = Identifier;
  74 }
  75
  76 VOID
  77 NTAPI
  78 FldrSetConfigurationData(IN PCONFIGURATION_COMPONENT_DATA ComponentData,
  79                          IN PCM_PARTIAL_RESOURCE_LIST ResourceList,
  80                          IN ULONG Size)
  81 {
  82     /* Set component information */
  83     ComponentData->ConfigurationData = ResourceList;
  84     ComponentData->ComponentEntry.ConfigurationDataLength = Size;
  85 }
  86
  87 VOID
  88 NTAPI
  89 FldrCreateSystemKey(OUT PCONFIGURATION_COMPONENT_DATA *SystemNode)
  90 {
  91     PCONFIGURATION_COMPONENT Component;
  92
  93     /* Allocate the root */
  94     FldrArcHwTreeRoot = FrLdrHeapAlloc(sizeof(CONFIGURATION_COMPONENT_DATA),
  95                                        TAG_HW_COMPONENT_DATA);
  96     if (!FldrArcHwTreeRoot) return;
  97
  98     /* Set it up */
  99     Component = &FldrArcHwTreeRoot->ComponentEntry;
 100     Component->Class = SystemClass;
 101     Component->Type = MaximumType;
 102     Component->ConfigurationDataLength = 0;
 103     Component->Identifier = 0;
 104     Component->IdentifierLength = 0;
 105     Component->Flags = 0;
 106     Component->Version = 0;
 107     Component->Revision = 0;
 108     Component->Key = 0;
 109     Component->AffinityMask = 0xFFFFFFFF;
 110
 111     /* Return the node */
 112     *SystemNode = FldrArcHwTreeRoot;
 113 }
 114
 115 static VOID
 116 NTAPI
 117 FldrLinkToParent(IN PCONFIGURATION_COMPONENT_DATA Parent,
 118                  IN PCONFIGURATION_COMPONENT_DATA Child)
 119 {
 120     PCONFIGURATION_COMPONENT_DATA Sibling;
 121
 122     /* Get the first sibling */
 123     Sibling = Parent->Child;
 124
 125     /* If no sibling exists, then we are the first child */
 126     if (!Sibling)
 127     {
 128         /* Link us in */
 129         Parent->Child = Child;
 130     }
 131     else
 132     {
 133         /* Loop each sibling */
 134         do
 135         {
 136             /* This is now the parent */
 137             Parent = Sibling;
 138         } while ((Sibling = Sibling->Sibling));
 139
 140         /* Found the lowest sibling; mark us as its sibling too */
 141         Parent->Sibling = Child;
 142     }
 143 }
 144
 145 VOID
 146 NTAPI
 147 FldrCreateComponentKey(IN PCONFIGURATION_COMPONENT_DATA SystemNode,
 148                        IN CONFIGURATION_CLASS Class,
 149                        IN CONFIGURATION_TYPE Type,
 150                        IN IDENTIFIER_FLAG Flags,
 151                        IN ULONG Key,
 152                        IN ULONG Affinity,
 153                        IN PCHAR IdentifierString,
 154                        IN PCM_PARTIAL_RESOURCE_LIST ResourceList,
 155                        IN ULONG Size,
 156                        OUT PCONFIGURATION_COMPONENT_DATA *ComponentKey)
 157 {
 158     PCONFIGURATION_COMPONENT_DATA ComponentData;
 159     PCONFIGURATION_COMPONENT Component;
 160
 161     /* Allocate the node for this component */
 162     ComponentData = FrLdrHeapAlloc(sizeof(CONFIGURATION_COMPONENT_DATA),
 163                                    TAG_HW_COMPONENT_DATA);
 164     if (!ComponentData) return;
 165
 166     /* Now save our parent */
 167     ComponentData->Parent = SystemNode;
 168
 169     /* Link us to the parent */
 170     if (SystemNode)
 171         FldrLinkToParent(SystemNode, ComponentData);
 172
 173     /* Set us up */
 174     Component = &ComponentData->ComponentEntry;
 175     Component->Class = Class;
 176     Component->Type = Type;
 177     Component->Flags = Flags;
 178     Component->Key = Key;
 179     Component->AffinityMask = Affinity;
 180
 181     /* Set identifier */
 182     if (IdentifierString)
 183         FldrSetIdentifier(ComponentData, IdentifierString);
 184
 185     /* Set configuration data */
 186     if (ResourceList)
 187         FldrSetConfigurationData(ComponentData, ResourceList, Size);
 188
 189     /* Return the child */
 190     *ComponentKey = ComponentData;
 191 }