18 Feb
2010
18 Feb
'10
4:56 p.m.
Author: sir_richard
Date: Thu Feb 18 17:56:54 2010
New Revision: 45610
URL: http://svn.reactos.org/svn/reactos?rev=45610&view=rev
Log:
[NTOS]: Build the actual ARM3 PFN database.
Modified:
trunk/reactos/ntoskrnl/mm/ARM3/mminit.c
Modified: trunk/reactos/ntoskrnl/mm/ARM3/mminit.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/mminit.c?…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/mminit.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/mminit.c [iso-8859-1] Thu Feb 18 17:56:54 2010
@@ -636,14 +636,13 @@
if (MiIsRegularMemory(LoaderBlock, PageFrameIndex))
{
/* Yes we do, set it up */
- //DPRINT1("PDE is valid, setting up PFN entry\n");
Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex);
Pfn1->u4.PteFrame = StartupPdIndex;
Pfn1->PteAddress = PointerPde;
Pfn1->u2.ShareCount++;
Pfn1->u3.e2.ReferenceCount = 1;
Pfn1->u3.e1.PageLocation = ActiveAndValid;
- Pfn1->u3.e1.CacheAttribute = MiCached;
+ Pfn1->u3.e1.CacheAttribute = MiNonCached;
}
else
{
@@ -686,7 +685,7 @@
Pfn2->u2.ShareCount++;
Pfn2->u3.e2.ReferenceCount = 1;
Pfn2->u3.e1.PageLocation = ActiveAndValid;
- Pfn2->u3.e1.CacheAttribute = MiCached;
+ Pfn2->u3.e1.CacheAttribute = MiNonCached;
}
}
}
@@ -712,21 +711,181 @@
NTAPI
MiBuildPfnDatabaseZeroPage(VOID)
{
- /* FIXME: TODO */
+ PMMPFN Pfn1;
+ PMMPDE PointerPde;
+
+ /* Grab the lowest page and check if it has no real references */
+ Pfn1 = MI_PFN_TO_PFNENTRY(MmLowestPhysicalPage);
+ if (!(MmLowestPhysicalPage) && !(Pfn1->u3.e2.ReferenceCount))
+ {
+ /* Make it a bogus page to catch errors */
+ PointerPde = MiAddressToPde(0xFFFFFFFF);
+ Pfn1->u4.PteFrame = PFN_FROM_PTE(PointerPde);
+ Pfn1->PteAddress = PointerPde;
+ Pfn1->u2.ShareCount++;
+ Pfn1->u3.e2.ReferenceCount = 0xFFF0;
+ Pfn1->u3.e1.PageLocation = ActiveAndValid;
+ Pfn1->u3.e1.CacheAttribute = MiNonCached;
+ }
}
VOID
NTAPI
MiBuildPfnDatabaseFromLoaderBlock(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
- /* FIXME: TODO */
+ PLIST_ENTRY NextEntry;
+ PFN_NUMBER PageCount = 0;
+ PMEMORY_ALLOCATION_DESCRIPTOR MdBlock;
+ PFN_NUMBER PageFrameIndex;
+ PMMPFN Pfn1;
+ PMMPTE PointerPte;
+ PMMPDE PointerPde;
+
+ /* Now loop through the descriptors */
+ NextEntry = LoaderBlock->MemoryDescriptorListHead.Flink;
+ while (NextEntry != &LoaderBlock->MemoryDescriptorListHead)
+ {
+ /* Get the current descriptor */
+ MdBlock = CONTAINING_RECORD(NextEntry,
+ MEMORY_ALLOCATION_DESCRIPTOR,
+ ListEntry);
+
+ /* Read its data */
+ PageCount = MdBlock->PageCount;
+ PageFrameIndex = MdBlock->BasePage;
+
+ /* Don't allow memory above what the PFN database is mapping */
+ if (PageFrameIndex > MmHighestPhysicalPage)
+ {
+ /* Since they are ordered, everything past here will be larger */
+ break;
+ }
+
+ /* On the other hand, the end page might be higher up... */
+ if ((PageFrameIndex + PageCount) > (MmHighestPhysicalPage + 1))
+ {
+ /* In which case we'll trim the descriptor to go as high as we can */
+ PageCount = MmHighestPhysicalPage + 1 - PageFrameIndex;
+ MdBlock->PageCount = PageCount;
+
+ /* But if there's nothing left to trim, we got too high, so quit */
+ if (!PageCount) break;
+ }
+
+ /* Now check the descriptor type */
+ switch (MdBlock->MemoryType)
+ {
+ /* Check for bad RAM */
+ case LoaderBad:
+
+ DPRINT1("You have damaged RAM modules. Stopping boot\n");
+ while (TRUE);
+ break;
+
+ /* Check for free RAM */
+ case LoaderFree:
+ case LoaderLoadedProgram:
+ case LoaderFirmwareTemporary:
+ case LoaderOsloaderStack:
+
+ /* Get the last page of this descriptor. Note we loop backwards */
+ PageFrameIndex += PageCount - 1;
+ Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex);
+ while (PageCount--)
+ {
+ /* If the page really has no references, mark it as free */
+ if (!Pfn1->u3.e2.ReferenceCount)
+ {
+ Pfn1->u3.e1.CacheAttribute = MiNonCached;
+ MiInsertPageInFreeList(PageFrameIndex);
+ }
+
+ /* Go to the next page */
+ Pfn1--;
+ PageFrameIndex--;
+ }
+
+ /* Done with this block */
+ break;
+
+ /* Check for pages that are invisible to us */
+ case LoaderFirmwarePermanent:
+ case LoaderSpecialMemory:
+ case LoaderBBTMemory:
+
+ /* And skip them */
+ break;
+
+ default:
+
+ /* Map these pages with the KSEG0 mapping that adds 0x80000000 */
+ PointerPte = MiAddressToPte(KSEG0_BASE + (PageFrameIndex <<
PAGE_SHIFT));
+ Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex);
+ while (PageCount--)
+ {
+ /* Check if the page is really unused */
+ PointerPde = MiAddressToPde(KSEG0_BASE + (PageFrameIndex <<
PAGE_SHIFT));
+ if (!Pfn1->u3.e2.ReferenceCount)
+ {
+ /* Mark it as being in-use */
+ Pfn1->u4.PteFrame = PFN_FROM_PTE(PointerPde);
+ Pfn1->PteAddress = PointerPte;
+ Pfn1->u2.ShareCount++;
+ Pfn1->u3.e2.ReferenceCount = 1;
+ Pfn1->u3.e1.PageLocation = ActiveAndValid;
+ Pfn1->u3.e1.CacheAttribute = MiNonCached;
+
+ /* Check for RAM disk page */
+ if (MdBlock->MemoryType == LoaderXIPRom)
+ {
+ /* Make it a pseudo-I/O ROM mapping */
+ Pfn1->u1.Flink = 0;
+ Pfn1->u2.ShareCount = 0;
+ Pfn1->u3.e2.ReferenceCount = 0;
+ Pfn1->u3.e1.PageLocation = 0;
+ Pfn1->u3.e1.Rom = 1;
+ Pfn1->u4.InPageError = 0;
+ Pfn1->u3.e1.PrototypePte = 1;
+ }
+ }
+
+ /* Advance page structures */
+ Pfn1++;
+ PageFrameIndex++;
+ PointerPte++;
+ }
+ break;
+ }
+
+ /* Next descriptor entry */
+ NextEntry = MdBlock->ListEntry.Flink;
+ }
}
VOID
NTAPI
MiBuildPfnDatabaseSelf(VOID)
{
- /* FIXME: TODO */
+ PMMPTE PointerPte, LastPte;
+ PMMPFN Pfn1;
+
+ /* Loop the PFN database page */
+ PointerPte = MiAddressToPte(MI_PFN_TO_PFNENTRY(MmLowestPhysicalPage));
+ LastPte = MiAddressToPte(MI_PFN_TO_PFNENTRY(MmHighestPhysicalPage));
+ while (PointerPte <= LastPte)
+ {
+ /* Make sure the page is valid */
+ if (PointerPte->u.Hard.Valid == 1)
+ {
+ /* Get the PFN entry and just mark it referenced */
+ Pfn1 = MI_PFN_TO_PFNENTRY(PointerPte->u.Hard.PageFrameNumber);
+ Pfn1->u2.ShareCount = 1;
+ Pfn1->u3.e2.ReferenceCount = 1;
+ }
+
+ /* Next */
+ PointerPte++;
+ }
}
VOID
@@ -744,6 +903,69 @@
/* Finally add the pages for the PFN database itself */
MiBuildPfnDatabaseSelf();
+}
+
+VOID
+NTAPI
+MmDumpArmPfnDatabase(VOID)
+{
+ ULONG i;
+ PMMPFN Pfn1;
+ PCHAR Consumer = "Unknown";
+ KIRQL OldIrql;
+ ULONG ActivePages = 0, FreePages = 0, OtherPages = 0;
+
+ KeRaiseIrql(HIGH_LEVEL, &OldIrql);
+
+ //
+ // Loop the PFN database
+ //
+ for (i = 0; i <= MmHighestPhysicalPage; i++)
+ {
+ Pfn1 = MI_PFN_TO_PFNENTRY(i);
+ if (!Pfn1) continue;
+
+ //
+ // Get the page location
+ //
+ switch (Pfn1->u3.e1.PageLocation)
+ {
+ case ActiveAndValid:
+
+ Consumer = "Active and Valid";
+ ActivePages++;
+ break;
+
+ case FreePageList:
+
+ Consumer = "Free Page List";
+ FreePages++;
+ break;
+
+ default:
+
+ Consumer = "Other (ASSERT!)";
+ OtherPages++;
+ break;
+ }
+
+ //
+ // Pretty-print the page
+ //
+ DbgPrint("0x%08p:\t%20s\t(%02d.%02d) [%08p-%08p])\n",
+ i << PAGE_SHIFT,
+ Consumer,
+ Pfn1->u3.e2.ReferenceCount,
+ Pfn1->u2.ShareCount,
+ Pfn1->PteAddress,
+ Pfn1->u4.PteFrame);
+ }
+
+ DbgPrint("Active: %d pages\t[%d KB]\n", ActivePages,
(ActivePages << PAGE_SHIFT) / 1024);
+ DbgPrint("Free: %d pages\t[%d KB]\n", FreePages,
(FreePages << PAGE_SHIFT) / 1024);
+ DbgPrint("Other: %d pages\t[%d KB]\n", OtherPages,
(OtherPages << PAGE_SHIFT) / 1024);
+
+ KeLowerIrql(OldIrql);
}
PFN_NUMBER
5425
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5425
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sir_richard＠svn.reactos.org