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575 lines
15 KiB
C
575 lines
15 KiB
C
/* $Id: mm_mminit_msvc.c,v 1.1 2004/02/06 08:22:01 fireball Exp $
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*
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* COPYRIGHT: See COPYING in the top directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/mm/mminit.c
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* PURPOSE: kernel memory managment initialization functions
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* PROGRAMMER: David Welch (welch@cwcom.net)
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* UPDATE HISTORY:
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* Created 9/4/98
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*/
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/* INCLUDES *****************************************************************/
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#include <ddk/ntddk.h>
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#include <roscfg.h>
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#include <internal/i386/segment.h>
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#include <internal/mm.h>
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#include <internal/ntoskrnl.h>
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#include <internal/io.h>
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#include <internal/ps.h>
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#include <internal/pool.h>
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#define NDEBUG
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#include <internal/debug.h>
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/* GLOBALS *****************************************************************/
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/*
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* Size of extended memory (kb) (fixed for now)
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*/
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#define EXTENDED_MEMORY_SIZE (3*1024*1024)
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/*
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* Compiler defined symbols
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*/
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#if defined(_MSC_VER)
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#pragma intrinsic(strcmp)
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static PIMAGE_SECTION_HEADER FindSection(const char* szSeg)
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{
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PIMAGE_NT_HEADERS NtHeader = RtlImageNtHeader((PVOID)KERNEL_BASE);
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PIMAGE_SECTION_HEADER Section = IMAGE_FIRST_SECTION(NtHeader);
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const int count = NtHeader->FileHeader.NumberOfSections;
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int i;
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for (i = 0; i < count; ++i, ++Section)
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{
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if (!strcmp(szSeg, Section->Name))
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{
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return Section;
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}
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}
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return NULL;
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}
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static void* FindSegmentStart(const char* szSeg)
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{
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PIMAGE_SECTION_HEADER Section = FindSection(szSeg);
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if (Section)
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{
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return (void*)(KERNEL_BASE + Section->VirtualAddress);
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}
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return NULL;
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}
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static void* FindSegmentEnd(const char* szSeg)
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{
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PIMAGE_SECTION_HEADER Section = FindSection(szSeg);
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if (Section)
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{
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return (void*)(KERNEL_BASE + Section->VirtualAddress + Section->Misc.VirtualSize);
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}
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return NULL;
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}
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#endif // defined(_MSC_VER)
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static BOOLEAN IsThisAnNtAsSystem = FALSE;
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static MM_SYSTEM_SIZE MmSystemSize = MmSmallSystem;
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static MEMORY_AREA* kernel_text_desc = NULL;
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static MEMORY_AREA* kernel_init_desc = NULL;
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static MEMORY_AREA* kernel_map_desc = NULL;
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static MEMORY_AREA* kernel_kpcr_desc = NULL;
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static MEMORY_AREA* kernel_data_desc = NULL;
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static MEMORY_AREA* kernel_param_desc = NULL;
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static MEMORY_AREA* kernel_pool_desc = NULL;
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static MEMORY_AREA* kernel_shared_data_desc = NULL;
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static MEMORY_AREA* kernel_mapped_low_mem_desc = NULL;
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static MEMORY_AREA* MiKernelMapDescriptor = NULL;
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static MEMORY_AREA* MiPagedPoolDescriptor = NULL;
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PHYSICAL_ADDRESS MmSharedDataPagePhysicalAddress;
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PVOID MiNonPagedPoolStart;
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ULONG MiNonPagedPoolLength;
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PVOID MiKernelMapStart;
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ULONG MiKernelMapLength;
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/* FUNCTIONS ****************************************************************/
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/*
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* @implemented
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*/
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BOOLEAN STDCALL MmIsThisAnNtAsSystem(VOID)
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{
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return(IsThisAnNtAsSystem);
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}
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/*
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* @implemented
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*/
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MM_SYSTEM_SIZE STDCALL MmQuerySystemSize(VOID)
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{
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return(MmSystemSize);
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}
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VOID MiShutdownMemoryManager(VOID)
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{
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}
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VOID INIT_FUNCTION
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MmInitVirtualMemory(ULONG LastKernelAddress,
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ULONG KernelLength)
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/*
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* FUNCTION: Intialize the memory areas list
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* ARGUMENTS:
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* bp = Pointer to the boot parameters
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* kernel_len = Length of the kernel
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*/
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{
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PVOID BaseAddress;
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ULONG Length;
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ULONG ParamLength = KernelLength;
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NTSTATUS Status;
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PHYSICAL_ADDRESS BoundaryAddressMultiple;
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//ULONG i;
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DPRINT("MmInitVirtualMemory(%x, %x)\n",LastKernelAddress, KernelLength);
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BoundaryAddressMultiple.QuadPart = 0;
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LastKernelAddress = PAGE_ROUND_UP(LastKernelAddress);
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MmInitMemoryAreas();
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/* Don't change the start of kernel map. Pte's must always exist for this region. */
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MiKernelMapStart = (char*)LastKernelAddress + PAGE_SIZE;
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MiKernelMapLength = MM_KERNEL_MAP_SIZE;
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MiNonPagedPoolStart = (char*)MiKernelMapStart + MiKernelMapLength + PAGE_SIZE;
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MiNonPagedPoolLength = MM_NONPAGED_POOL_SIZE;
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MmPagedPoolBase = (char*)MiNonPagedPoolStart + MiNonPagedPoolLength + PAGE_SIZE;
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MmPagedPoolSize = MM_PAGED_POOL_SIZE;
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MiInitKernelMap();
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MiInitializeNonPagedPool();
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/*
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* Setup the system area descriptor list
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*/
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BaseAddress = (PVOID)0xf0000000;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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0x400000,
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0,
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&kernel_map_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)KPCR_BASE;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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PAGE_SIZE * MAXIMUM_PROCESSORS,
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0,
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&kernel_kpcr_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)0xd0000000;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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0x100000,
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0,
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&kernel_mapped_low_mem_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)KERNEL_BASE;
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Length = PAGE_ROUND_UP(((ULONG)FindSegmentEnd(".text"))) - KERNEL_BASE;
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ParamLength = ParamLength - Length;
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/*
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* No need to lock the address space at this point since no
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* other threads are running.
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*/
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_text_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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// TODO: Here we REALLY should iterate the PE's sections and set protection
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// accordingly for each and every one of them.
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// NOTE This code ONLY works because of the assumption that the .text
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// segment is the first in the PE, and the .reloc segment is the last.
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// Link in a way to make this assumtion false, and the kernel won't work.
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BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)FindSegmentEnd(".text")));
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Length = PAGE_ROUND_UP(((ULONG)FindSegmentStart(".reloc"))) - (ULONG_PTR)BaseAddress;
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ParamLength = ParamLength - Length;
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DPRINT1("Data Length %x\n",Length);
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DPRINT1("Data BaseAddress %x\n",BaseAddress);
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/*
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* No need to lock the address space at this point since we are
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* the only thread running.
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*/
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// For GCC-compiled, kernel_data_desc contains:
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// .data, .edata, .idata, .bss and .rsrc. E.i. all but .text and .reloc
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_data_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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// BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)FindSegmentEnd(".edata")));
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BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)FindSegmentStart(".reloc")));
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Length = LastKernelAddress - (ULONG)BaseAddress;
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// For GCC-compiled, kernel_param_desc contains .reloc
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_param_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = MiNonPagedPoolStart;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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MiNonPagedPoolLength,
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0,
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&kernel_pool_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = MiKernelMapStart;
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Status = MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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MiKernelMapLength,
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0,
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&MiKernelMapDescriptor,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = MmPagedPoolBase;
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Status = MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_PAGED_POOL,
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&BaseAddress,
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MmPagedPoolSize,
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0,
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&MiPagedPoolDescriptor,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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MmInitializePagedPool();
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/*
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* Create the kernel mapping of the user/kernel shared memory.
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*/
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BaseAddress = (PVOID)KI_USER_SHARED_DATA;
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Length = PAGE_SIZE;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_shared_data_desc,
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FALSE,
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FALSE,
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BoundaryAddressMultiple);
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Status = MmRequestPageMemoryConsumer(MC_NPPOOL, TRUE,
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&MmSharedDataPagePhysicalAddress);
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Status = MmCreateVirtualMapping(NULL,
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(PVOID)KI_USER_SHARED_DATA,
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PAGE_READWRITE,
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MmSharedDataPagePhysicalAddress,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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DbgPrint("Unable to create virtual mapping\n");
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KEBUGCHECK(0);
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}
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RtlZeroMemory(BaseAddress, Length);
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/*
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*
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*/
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MmInitializeMemoryConsumer(MC_USER, MmTrimUserMemory);
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}
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VOID INIT_FUNCTION
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MmInit1(ULONG FirstKrnlPhysAddr,
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ULONG LastKrnlPhysAddr,
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ULONG LastKernelAddress,
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PADDRESS_RANGE BIOSMemoryMap,
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ULONG AddressRangeCount,
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ULONG MaxMem)
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/*
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* FUNCTION: Initalize memory managment
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*/
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{
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ULONG i;
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ULONG kernel_len;
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#ifndef MP
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extern unsigned int unmap_me, unmap_me2, unmap_me3;
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#endif
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DPRINT("MmInit1(FirstKrnlPhysAddr, %x, LastKrnlPhysAddr %x, LastKernelAddress %x)\n",
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FirstKrnlPhysAddr,
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LastKrnlPhysAddr,
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LastKernelAddress);
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if ((BIOSMemoryMap != NULL) && (AddressRangeCount > 0))
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{
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// If we have a bios memory map, recalulate the memory size
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ULONG last = 0;
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for (i = 0; i < AddressRangeCount; i++)
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{
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if (BIOSMemoryMap[i].Type == 1
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&& (BIOSMemoryMap[i].BaseAddrLow + BIOSMemoryMap[i].LengthLow + PAGE_SIZE -1) / PAGE_SIZE > last)
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{
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last = (BIOSMemoryMap[i].BaseAddrLow + BIOSMemoryMap[i].LengthLow + PAGE_SIZE -1) / PAGE_SIZE;
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}
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}
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if ((last - 256) * 4 > KeLoaderBlock.MemHigher)
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{
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KeLoaderBlock.MemHigher = (last - 256) * 4;
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}
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}
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if (KeLoaderBlock.MemHigher >= (MaxMem - 1) * 1024)
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{
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KeLoaderBlock.MemHigher = (MaxMem - 1) * 1024;
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}
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/*
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* FIXME: Set this based on the system command line
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*/
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MmSystemRangeStart = (PVOID)KERNEL_BASE; // 0xC0000000
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MmUserProbeAddress = (PVOID)0x7fff0000;
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MmHighestUserAddress = (PVOID)0x7ffeffff;
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MmInitGlobalKernelPageDirectory();
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/*
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* Initialize memory managment statistics
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*/
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MmStats.NrTotalPages = 0;
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MmStats.NrSystemPages = 0;
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MmStats.NrUserPages = 0;
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MmStats.NrReservedPages = 0;
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MmStats.NrUserPages = 0;
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MmStats.NrFreePages = 0;
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MmStats.NrLockedPages = 0;
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MmStats.PagingRequestsInLastMinute = 0;
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MmStats.PagingRequestsInLastFiveMinutes = 0;
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MmStats.PagingRequestsInLastFifteenMinutes = 0;
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/*
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* Initialize the kernel address space
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*/
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MmInitializeKernelAddressSpace();
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/*
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* Unmap low memory
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*/
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#ifndef MP
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/* In SMP mode we unmap the low memory in MmInit3.
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The APIC needs the mapping of the first pages
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while the processors are starting up. */
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MmDeletePageTable(NULL, 0);
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#endif
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/*
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* Free all pages not used for kernel memory
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* (we assume the kernel occupies a continuous range of physical
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* memory)
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*/
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DPRINT("first krnl %x\nlast krnl %x\n",FirstKrnlPhysAddr,
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LastKrnlPhysAddr);
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/*
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* Free physical memory not used by the kernel
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*/
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MmStats.NrTotalPages = KeLoaderBlock.MemHigher/4;
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if (!MmStats.NrTotalPages)
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{
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DbgPrint("Memory not detected, default to 8 MB\n");
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MmStats.NrTotalPages = 2048;
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}
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else
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{
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/* add 1MB for standard memory (not extended) */
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MmStats.NrTotalPages += 256;
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}
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#ifdef BIOS_MEM_FIX
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MmStats.NrTotalPages += 16;
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#endif
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DbgPrint("Used memory %dKb\n", (MmStats.NrTotalPages * PAGE_SIZE) / 1024);
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LastKernelAddress = (ULONG)MmInitializePageList((PVOID)FirstKrnlPhysAddr,
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(PVOID)LastKrnlPhysAddr,
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MmStats.NrTotalPages,
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PAGE_ROUND_UP(LastKernelAddress),
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BIOSMemoryMap,
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AddressRangeCount);
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kernel_len = LastKrnlPhysAddr - FirstKrnlPhysAddr;
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/*
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* Create a trap for null pointer references and protect text
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* segment
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*/
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CHECKPOINT;
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#if defined(_MSC_VER)
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DPRINT(".text start: %x, .data start: %x\n",
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(int)FindSegmentStart(".text"),
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(int)FindSegmentStart(".data"));
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{
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const char* pCode = FindSegmentStart(".text");
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const char* pData = FindSegmentEnd(".text");
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while (pCode < pData)
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{
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MmSetPageProtect(NULL, (PVOID)pCode, PAGE_EXECUTE_READ);
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pCode += PAGE_SIZE;
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}
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}
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#else
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DPRINT("_text_start__ %x _init_end__ %x\n",(int)&_text_start__,(int)&_init_end__);
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for (i=PAGE_ROUND_DOWN(((int)&_text_start__));
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i<PAGE_ROUND_UP(((int)&_init_end__));i=i+PAGE_SIZE)
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{
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MmSetPageProtect(NULL,
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(PVOID)i,
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PAGE_EXECUTE_READ);
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}
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#endif
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DPRINT("Invalidating between %x and %x\n",
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LastKernelAddress, 0xc0600000);
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for (i=(LastKernelAddress); i<0xc0600000; i+=PAGE_SIZE)
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{
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MmRawDeleteVirtualMapping((PVOID)(i));
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}
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DPRINT("Invalidating between %x and %x\n",
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0xd0100000, 0xd0400000);
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for (i=0xd0100000; i<0xd0400000; i+=PAGE_SIZE)
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{
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MmRawDeleteVirtualMapping((PVOID)(i));
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}
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DPRINT("Almost done MmInit()\n");
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#ifndef MP
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/* FIXME: This is broken in SMP mode */
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#if !defined(_MSC_VER) // FIXME: I don't trust using this from MSVC yet!
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me, TRUE, NULL, NULL);
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me2, TRUE, NULL, NULL);
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me3, TRUE, NULL, NULL);
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#endif // _MSC_VER
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#endif
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/*
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* Intialize memory areas
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*/
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MmInitVirtualMemory(LastKernelAddress, kernel_len);
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MmInitializeMdlImplementation();
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}
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VOID INIT_FUNCTION
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MmInit2(VOID)
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{
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MmInitializeRmapList();
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MmInitializePageOp();
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MmInitSectionImplementation();
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MmInitPagingFile();
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}
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VOID INIT_FUNCTION
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MmInit3(VOID)
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{
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/*
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* Unmap low memory
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*/
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#ifdef MP
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/* In SMP mode we can unmap the low memory
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if all processors are started. */
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MmDeletePageTable(NULL, 0);
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#endif
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MmInitZeroPageThread();
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MmCreatePhysicalMemorySection();
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MiInitBalancerThread();
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/*
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* Initialise the modified page writer.
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*/
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MmInitMpwThread();
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/* FIXME: Read parameters from memory */
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}
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VOID STATIC
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MiFreeInitMemoryPage(PVOID Context, MEMORY_AREA* MemoryArea, PVOID Address,
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|
PHYSICAL_ADDRESS PhysAddr, SWAPENTRY SwapEntry,
|
|
BOOLEAN Dirty)
|
|
{
|
|
assert(SwapEntry == 0);
|
|
if (PhysAddr.QuadPart != 0)
|
|
{
|
|
MmReleasePageMemoryConsumer(MC_NPPOOL, PhysAddr);
|
|
}
|
|
}
|
|
|
|
VOID
|
|
MiFreeInitMemory(VOID)
|
|
{
|
|
#if defined(_MSC_VER)
|
|
DPRINT1("Can not yet free .init memory for MSVC compiled kernel\n");
|
|
#else
|
|
MmLockAddressSpace(MmGetKernelAddressSpace());
|
|
MmFreeMemoryArea(MmGetKernelAddressSpace(),
|
|
(PVOID)&_init_start__,
|
|
PAGE_ROUND_UP((ULONG)&_init_end__) - (ULONG)_init_start__,
|
|
MiFreeInitMemoryPage,
|
|
NULL);
|
|
MmUnlockAddressSpace(MmGetKernelAddressSpace());
|
|
#endif
|
|
}
|