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 NTAPI
  30 FldrSetIdentifier(IN PCONFIGURATION_COMPONENT_DATA ComponentData,
  31                   IN PCHAR IdentifierString)
  32 {
  33     PCONFIGURATION_COMPONENT Component = &ComponentData->ComponentEntry;
  34     SIZE_T IdentifierLength;
  35     PCHAR Identifier;
  36
  37     /* Allocate memory for the identifier */
  38     IdentifierLength = strlen(IdentifierString) + 1;
  39     Identifier = FrLdrHeapAlloc(IdentifierLength, TAG_HW_NAME);
  40     if (!Identifier) return;
  41
  42     /* Copy the identifier */
  43     RtlCopyMemory(Identifier, IdentifierString, IdentifierLength);
  44
  45     /* Set component information */
  46     Component->IdentifierLength = (ULONG)IdentifierLength;
  47     Component->Identifier = Identifier;
  48 }
  49
  50 VOID
  51 NTAPI
  52 FldrSetConfigurationData(IN PCONFIGURATION_COMPONENT_DATA ComponentData,
  53                          IN PCM_PARTIAL_RESOURCE_LIST ResourceList,
  54                          IN ULONG Size)
  55 {
  56     /* Set component information */
  57     ComponentData->ConfigurationData = ResourceList;
  58     ComponentData->ComponentEntry.ConfigurationDataLength = Size;
  59 }
  60
  61 VOID
  62 NTAPI
  63 FldrCreateSystemKey(OUT PCONFIGURATION_COMPONENT_DATA *SystemNode)
  64 {
  65     PCONFIGURATION_COMPONENT Component;
  66
  67     /* Allocate the root */
  68     FldrArcHwTreeRoot = FrLdrHeapAlloc(sizeof(CONFIGURATION_COMPONENT_DATA),
  69                                        TAG_HW_COMPONENT_DATA);
  70     if (!FldrArcHwTreeRoot) return;
  71
  72     /* Set it up */
  73     Component = &FldrArcHwTreeRoot->ComponentEntry;
  74     Component->Class = SystemClass;
  75     Component->Type = MaximumType;
  76     Component->ConfigurationDataLength = 0;
  77     Component->Identifier = 0;
  78     Component->IdentifierLength = 0;
  79     Component->Flags = 0;
  80     Component->Version = 0;
  81     Component->Revision = 0;
  82     Component->Key = 0;
  83     Component->AffinityMask = 0xFFFFFFFF;
  84
  85     /* Return the node */
  86     *SystemNode = FldrArcHwTreeRoot;
  87 }
  88
  89 static VOID
  90 NTAPI
  91 FldrLinkToParent(IN PCONFIGURATION_COMPONENT_DATA Parent,
  92                  IN PCONFIGURATION_COMPONENT_DATA Child)
  93 {
  94     PCONFIGURATION_COMPONENT_DATA Sibling;
  95
  96     /* Get the first sibling */
  97     Sibling = Parent->Child;
  98
  99     /* If no sibling exists, then we are the first child */
 100     if (!Sibling)
 101     {
 102         /* Link us in */
 103         Parent->Child = Child;
 104     }
 105     else
 106     {
 107         /* Loop each sibling */
 108         do
 109         {
 110             /* This is now the parent */
 111             Parent = Sibling;
 112         } while ((Sibling = Sibling->Sibling));
 113
 114         /* Found the lowest sibling; mark us as its sibling too */
 115         Parent->Sibling = Child;
 116     }
 117 }
 118
 119 VOID
 120 NTAPI
 121 FldrCreateComponentKey(IN PCONFIGURATION_COMPONENT_DATA SystemNode,
 122                        IN CONFIGURATION_CLASS Class,
 123                        IN CONFIGURATION_TYPE Type,
 124                        IN IDENTIFIER_FLAG Flags,
 125                        IN ULONG Key,
 126                        IN ULONG Affinity,
 127                        IN PCHAR IdentifierString,
 128                        IN PCM_PARTIAL_RESOURCE_LIST ResourceList,
 129                        IN ULONG Size,
 130                        OUT PCONFIGURATION_COMPONENT_DATA *ComponentKey)
 131 {
 132     PCONFIGURATION_COMPONENT_DATA ComponentData;
 133     PCONFIGURATION_COMPONENT Component;
 134
 135     /* Allocate the node for this component */
 136     ComponentData = FrLdrHeapAlloc(sizeof(CONFIGURATION_COMPONENT_DATA),
 137                                    TAG_HW_COMPONENT_DATA);
 138     if (!ComponentData) return;
 139
 140     /* Now save our parent */
 141     ComponentData->Parent = SystemNode;
 142
 143     /* Link us to the parent */
 144     if (SystemNode)
 145         FldrLinkToParent(SystemNode, ComponentData);
 146
 147     /* Set us up */
 148     Component = &ComponentData->ComponentEntry;
 149     Component->Class = Class;
 150     Component->Type = Type;
 151     Component->Flags = Flags;
 152     Component->Key = Key;
 153     Component->AffinityMask = Affinity;
 154
 155     /* Set identifier */
 156     if (IdentifierString)
 157         FldrSetIdentifier(ComponentData, IdentifierString);
 158
 159     /* Set configuration data */
 160     if (ResourceList)
 161         FldrSetConfigurationData(ComponentData, ResourceList, Size);
 162
 163     /* Return the child */
 164     *ComponentKey = ComponentData;
 165 }