mirror of
https://github.com/reactos/reactos.git
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138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
/*
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* COPYRIGHT: See COPYING.ARM in the top level directory
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* PROJECT: ReactOS UEFI Boot Library
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* FILE: boot/environ/lib/mm/i386/mmx86.c
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* PURPOSE: Boot Library Memory Manager x86-Specific Code
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* PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include "bl.h"
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/* DATA VARIABLES ************************************************************/
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ULONG_PTR MmArchKsegBase;
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ULONG_PTR MmArchKsegBias;
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ULONG MmArchLargePageSize;
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BL_ADDRESS_RANGE MmArchKsegAddressRange;
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ULONG_PTR MmArchTopOfApplicationAddressSpace;
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ULONG_PTR Mmx86SelfMapBase;
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typedef VOID
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(*PBL_MM_FLUSH_TLB) (
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VOID
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);
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typedef VOID
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(*PBL_MM_RELOCATE_SELF_MAP) (
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VOID
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);
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PBL_MM_RELOCATE_SELF_MAP BlMmRelocateSelfMap;
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PBL_MM_FLUSH_TLB BlMmFlushTlb;
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ULONG MmDeferredMappingCount;
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/* FUNCTIONS *****************************************************************/
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VOID
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MmArchNullFunction (
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VOID
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)
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{
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/* Nothing to do */
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return;
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}
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NTSTATUS
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Mmx86pMapMemoryRegions (
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_In_ ULONG Phase,
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_In_ PBL_MEMORY_DATA MemoryData
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)
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{
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BOOLEAN DoDeferred;
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/* In phase 1 we don't initialize deferred mappings*/
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if (Phase == 1)
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{
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DoDeferred = 0;
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}
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else
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{
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/* Don't do anything if there's nothing to initialize */
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if (!MmDeferredMappingCount)
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{
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return STATUS_SUCCESS;
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}
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DoDeferred = 1;
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}
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if (DoDeferred)
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{
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EfiPrintf(L"Deferred todo\r\n");
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}
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EfiPrintf(L"Phase 1 TODO\r\n");
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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MmArchInitialize (
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_In_ ULONG Phase,
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_In_ PBL_MEMORY_DATA MemoryData,
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_In_ BL_TRANSLATION_TYPE TranslationType,
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_In_ BL_TRANSLATION_TYPE RequestedTranslationType
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)
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{
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NTSTATUS Status;
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/* For phase 2, just map deferred regions */
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if (Phase != 1)
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{
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return Mmx86pMapMemoryRegions(2, MemoryData);
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}
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/* What translation type are we switching to? */
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switch (RequestedTranslationType)
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{
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/* Physical memory */
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case BlNone:
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/* Initialize everything to default/null values */
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MmArchLargePageSize = 1;
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MmArchKsegBase = 0;
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MmArchKsegBias = 0;
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MmArchKsegAddressRange.Minimum = 0;
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MmArchKsegAddressRange.Maximum = (ULONGLONG)~0;
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MmArchTopOfApplicationAddressSpace = 0;
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Mmx86SelfMapBase = 0;
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/* Set stub functions */
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BlMmRelocateSelfMap = MmArchNullFunction;
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BlMmFlushTlb = MmArchNullFunction;
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/* Set success */
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Status = STATUS_SUCCESS;
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break;
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case BlVirtual:
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Status = STATUS_NOT_IMPLEMENTED;
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break;
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case BlPae:
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Status = STATUS_NOT_SUPPORTED;
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break;
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default:
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Status = STATUS_INVALID_PARAMETER;
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break;
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}
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return Status;
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}
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