mirror of
https://github.com/reactos/reactos.git
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112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/*
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* PROJECT: EFI Windows Loader
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: boot/freeldr/freeldr/windows/conversion.c
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* PURPOSE: Physical <-> Virtual addressing mode conversions
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* PROGRAMMERS: Aleksey Bragin (aleksey@reactos.org)
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*/
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/* INCLUDES ***************************************************************/
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#include <freeldr.h>
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//#include <ndk/ldrtypes.h>
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#include <debug.h>
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DBG_DEFAULT_CHANNEL(WINDOWS);
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/* FUNCTIONS **************************************************************/
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VOID
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List_PaToVa(_In_ PLIST_ENTRY ListHeadPa)
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{
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PLIST_ENTRY EntryPa, NextPa;
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/* List must be properly initialized */
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ASSERT(ListHeadPa->Flink != 0);
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ASSERT(ListHeadPa->Blink != 0);
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/* Loop the list in physical address space */
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EntryPa = ListHeadPa->Flink;
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while (EntryPa != ListHeadPa)
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{
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/* Save the physical address of the next entry */
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NextPa = EntryPa->Flink;
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/* Convert the addresses of this entry */
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EntryPa->Flink = PaToVa(EntryPa->Flink);
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EntryPa->Blink = PaToVa(EntryPa->Blink);
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/* Go to the next entry */
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EntryPa = NextPa;
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}
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/* Finally convert the list head */
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ListHeadPa->Flink = PaToVa(ListHeadPa->Flink);
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ListHeadPa->Blink = PaToVa(ListHeadPa->Blink);
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}
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// This function converts only Child->Child, and calls itself for each Sibling
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VOID
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ConvertConfigToVA(PCONFIGURATION_COMPONENT_DATA Start)
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{
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PCONFIGURATION_COMPONENT_DATA Child;
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PCONFIGURATION_COMPONENT_DATA Sibling;
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TRACE("ConvertConfigToVA(Start 0x%X)\n", Start);
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Child = Start;
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while (Child != NULL)
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{
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if (Child->ConfigurationData)
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Child->ConfigurationData = PaToVa(Child->ConfigurationData);
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if (Child->Child)
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Child->Child = PaToVa(Child->Child);
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if (Child->Parent)
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Child->Parent = PaToVa(Child->Parent);
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if (Child->Sibling)
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Child->Sibling = PaToVa(Child->Sibling);
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if (Child->ComponentEntry.Identifier)
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Child->ComponentEntry.Identifier = PaToVa(Child->ComponentEntry.Identifier);
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TRACE("Device 0x%X class %d type %d id '%s', parent %p\n", Child,
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Child->ComponentEntry.Class, Child->ComponentEntry.Type, VaToPa(Child->ComponentEntry.Identifier), Child->Parent);
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// Go through siblings list
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Sibling = VaToPa(Child->Sibling);
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while (Sibling != NULL)
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{
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if (Sibling->ConfigurationData)
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Sibling->ConfigurationData = PaToVa(Sibling->ConfigurationData);
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if (Sibling->Child)
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Sibling->Child = PaToVa(Sibling->Child);
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if (Sibling->Parent)
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Sibling->Parent = PaToVa(Sibling->Parent);
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if (Sibling->Sibling)
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Sibling->Sibling = PaToVa(Sibling->Sibling);
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if (Sibling->ComponentEntry.Identifier)
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Sibling->ComponentEntry.Identifier = PaToVa(Sibling->ComponentEntry.Identifier);
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TRACE("Device 0x%X class %d type %d id '%s', parent %p\n", Sibling,
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Sibling->ComponentEntry.Class, Sibling->ComponentEntry.Type, VaToPa(Sibling->ComponentEntry.Identifier), Sibling->Parent);
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// Recurse into the Child tree
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if (VaToPa(Sibling->Child) != NULL)
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ConvertConfigToVA(VaToPa(Sibling->Child));
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Sibling = VaToPa(Sibling->Sibling);
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}
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// Go to the next child
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Child = VaToPa(Child->Child);
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}
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}
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