[ion] 73722: [BOOTLIB]: Clarify that BlMemoryReserved == BlMemoryBelow1MB [BOOTLIB]: Implement EfiAllocatePages, EfiFreePages for Protected Mode. [BOOTLIB]: Fix a "Todo" in MmFwGetMemoryMap: We now...
6 Feb
2017
6 Feb
'17
3:14 a.m.
Author: ion
Date: Mon Feb 6 03:14:14 2017
New Revision: 73722
URL: http://svn.reactos.org/svn/reactos?rev=73722&view=rev
Log:
[BOOTLIB]: Clarify that BlMemoryReserved == BlMemoryBelow1MB
[BOOTLIB]: Implement EfiAllocatePages, EfiFreePages for Protected Mode.
[BOOTLIB]: Fix a "Todo" in MmFwGetMemoryMap: We now free the EFI buffer used for
the memory map itself, and unmap it from the memory map (which would show it as
'in-use' while we're dumping it).
Modified:
trunk/reactos/boot/environ/app/bootmgr/bootmgr.c
trunk/reactos/boot/environ/include/bl.h
trunk/reactos/boot/environ/lib/firmware/efi/firmware.c
trunk/reactos/boot/environ/lib/mm/descriptor.c
trunk/reactos/boot/environ/lib/mm/mm.c
trunk/reactos/boot/environ/lib/mm/pagealloc.c
Modified: trunk/reactos/boot/environ/app/bootmgr/bootmgr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/app/bootmgr/b…
==============================================================================
--- trunk/reactos/boot/environ/app/bootmgr/bootmgr.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/app/bootmgr/bootmgr.c [iso-8859-1] Mon Feb 6 03:14:14
2017
@@ -1035,11 +1035,11 @@
AddressRange.Maximum = 0xFFFFF;
AddressRange.Minimum = 0;
- /* Allocate one reserved page with the "reserved" attribute */
+ /* Allocate one reserved page with the "below 1MB" attribute */
Status = MmPapAllocatePhysicalPagesInRange(&PhysicalAddress,
BlApplicationReserved,
1,
- BlMemoryReserved,
+ BlMemoryBelow1MB,
0,
&MmMdlUnmappedAllocated,
&AddressRange,
Modified: trunk/reactos/boot/environ/include/bl.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/include/bl.h?…
==============================================================================
--- trunk/reactos/boot/environ/include/bl.h [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/include/bl.h [iso-8859-1] Mon Feb 6 03:14:14 2017
@@ -364,8 +364,8 @@
BlMemoryUnknown = 0x00010000,
BlMemoryNonFixed = 0x00020000,
BlMemoryFixed = 0x00040000,
- BlMemoryReserved = 0x00080000,
- BlMemoryValidAllocationAttributes = BlMemoryNonFixed | BlMemoryFixed |
BlMemoryReserved | BlMemoryUnknown,
+ BlMemoryBelow1MB = 0x00080000,
+ BlMemoryValidAllocationAttributes = BlMemoryNonFixed | BlMemoryFixed |
BlMemoryBelow1MB | BlMemoryUnknown,
BlMemoryValidAllocationAttributeMask = 0x00FF0000,
//
@@ -2006,6 +2006,13 @@
PBL_MEMORY_DESCRIPTOR
MmMdFindDescriptor (
_In_ ULONG WhichList,
+ _In_ ULONG Flags,
+ _In_ ULONGLONG Page
+ );
+
+PBL_MEMORY_DESCRIPTOR
+MmMdFindDescriptorFromMdl (
+ _In_ PBL_MEMORY_DESCRIPTOR_LIST MdList,
_In_ ULONG Flags,
_In_ ULONGLONG Page
);
Modified: trunk/reactos/boot/environ/lib/firmware/efi/firmware.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/firmware/…
==============================================================================
--- trunk/reactos/boot/environ/lib/firmware/efi/firmware.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/firmware/efi/firmware.c [iso-8859-1] Mon Feb 6
03:14:14 2017
@@ -617,8 +617,8 @@
OldMode = CurrentExecutionContext->Mode;
if (OldMode != BlRealMode)
{
- /* FIXME: Not yet implemented */
- return STATUS_NOT_IMPLEMENTED;
+ /* Switch to real mode */
+ BlpArchSwitchContext(BlProtectedMode);
}
/* Make the EFI call */
@@ -1118,13 +1118,18 @@
{
BL_ARCH_MODE OldMode;
EFI_STATUS EfiStatus;
+ PHYSICAL_ADDRESS MemoryPhysical;
/* Are we in protected mode? */
OldMode = CurrentExecutionContext->Mode;
if (OldMode != BlRealMode)
{
- /* FIXME: Not yet implemented */
- return STATUS_NOT_IMPLEMENTED;
+ /* Translate output address */
+ BlMmTranslateVirtualAddress(Memory, &MemoryPhysical);
+ Memory = (EFI_PHYSICAL_ADDRESS*)MemoryPhysical.LowPart;
+
+ /* Switch to real mode */
+ BlpArchSwitchContext(BlProtectedMode);
}
/* Make the EFI call */
@@ -1387,7 +1392,7 @@
BL_LIBRARY_PARAMETERS LibraryParameters = BlpLibraryParameters;
BOOLEAN UseEfiBuffer, HaveRamDisk;
NTSTATUS Status;
- ULONGLONG Pages, StartPage, EndPage;
+ ULONGLONG Pages, StartPage, EndPage, EfiBufferPage;
UINTN EfiMemoryMapSize, MapKey, DescriptorSize, DescriptorVersion;
EFI_PHYSICAL_ADDRESS EfiBuffer = 0;
EFI_MEMORY_DESCRIPTOR* EfiMemoryMap;
@@ -1650,9 +1655,8 @@
/* Check if this region is currently free RAM */
if (Descriptor->Type == BlConventionalMemory)
{
- /* Set the reserved flag on the descriptor */
- EfiPrintf(L"Adding magic flag\r\n");
- Descriptor->Flags |= BlMemoryReserved;
+ /* Set the appropriate flag on the descriptor */
+ Descriptor->Flags |= BlMemoryBelow1MB;
}
/* Add this descriptor into the list */
@@ -1695,9 +1699,8 @@
/* Check if this region is currently free RAM below 1MB */
if ((Descriptor->Type == BlConventionalMemory) && (EndPage <=
0x100))
{
- /* Set the reserved flag on the descriptor */
- EfiPrintf(L"Adding magic flag\r\n");
- Descriptor->Flags |= BlMemoryReserved;
+ /* Set the appropriate flag on the descriptor */
+ Descriptor->Flags |= BlMemoryBelow1MB;
}
/* Add the descriptor to the list, requesting coalescing as asked */
@@ -1718,8 +1721,66 @@
EfiMemoryMap = (PVOID)((ULONG_PTR)EfiMemoryMap + DescriptorSize);
}
- /* FIXME: @TODO: Mark the EfiBuffer as free, since we're about to free it */
- /* For now, just "leak" the 1-2 pages... */
+ /* Check if we are using the local UEFI buffer */
+ if (!UseEfiBuffer)
+ {
+ goto Quickie;
+ }
+
+ /* Free the EFI buffer */
+ Status = EfiFreePages(Pages, EfiBuffer);
+ if (!NT_SUCCESS(Status))
+ {
+ /* Keep the pages marked 'in use' and fake success */
+ Status = STATUS_SUCCESS;
+ goto Quickie;
+ }
+
+ /* Get the base page of the EFI buffer */
+ EfiBufferPage = EfiBuffer >> PAGE_SHIFT;
+ Pages = (EfiBufferPage + Pages) - EfiBufferPage;
+
+ /* Don't try freeing below */
+ EfiBuffer = 0;
+
+ /* Find the current descriptor for the allocation */
+ Descriptor = MmMdFindDescriptorFromMdl(MemoryMap,
+ BL_MM_REMOVE_PHYSICAL_REGION_FLAG,
+ EfiBufferPage);
+ if (!Descriptor)
+ {
+ Status = STATUS_UNSUCCESSFUL;
+ goto Quickie;
+ }
+
+ /* Convert it to a free descriptor */
+ Descriptor = MmMdInitByteGranularDescriptor(Descriptor->Flags,
+ BlConventionalMemory,
+ EfiBufferPage,
+ 0,
+ Pages);
+ if (!Descriptor)
+ {
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ goto Quickie;
+ }
+
+ /* Remove the region from the memory map */
+ Status = MmMdRemoveRegionFromMdlEx(MemoryMap,
+ BL_MM_REMOVE_PHYSICAL_REGION_FLAG,
+ EfiBufferPage,
+ Pages,
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ MmMdFreeDescriptor(Descriptor);
+ goto Quickie;
+ }
+
+ /* Add it back as free memory */
+ Status = MmMdAddDescriptorToList(MemoryMap,
+ Descriptor,
+ BL_MM_ADD_DESCRIPTOR_COALESCE_FLAG);
Quickie:
/* Free the EFI buffer, if we had one */
Modified: trunk/reactos/boot/environ/lib/mm/descriptor.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/mm/descri…
==============================================================================
--- trunk/reactos/boot/environ/lib/mm/descriptor.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/mm/descriptor.c [iso-8859-1] Mon Feb 6 03:14:14 2017
@@ -1073,7 +1073,7 @@
}
/* Bail out if the allocation flags don't match */
- if (((Flags ^ Descriptor->Flags) & (BlMemoryRuntime | BlMemoryReserved |
BlMemoryUnknown)))
+ if (((Flags ^ Descriptor->Flags) & (BlMemoryRuntime | BlMemoryBelow1MB |
BlMemoryUnknown)))
{
//EfiPrintf(L"Incorrect memory allocation flags\r\n");
return FALSE;
Modified: trunk/reactos/boot/environ/lib/mm/mm.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/mm/mm.c?r…
==============================================================================
--- trunk/reactos/boot/environ/lib/mm/mm.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/mm/mm.c [iso-8859-1] Mon Feb 6 03:14:14 2017
@@ -348,7 +348,6 @@
LibraryParameters->MinimumAllocationCount);
if (!NT_SUCCESS(Status))
{
- EfiPrintf(L"PA Mm init failed: %lx\r\n", Status);
goto Quickie;
}
Modified: trunk/reactos/boot/environ/lib/mm/pagealloc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/mm/pageal…
==============================================================================
--- trunk/reactos/boot/environ/lib/mm/pagealloc.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/mm/pagealloc.c [iso-8859-1] Mon Feb 6 03:14:14 2017
@@ -543,7 +543,7 @@
{
/* Remove this region from our free memory MDL */
Status = MmMdRemoveRegionFromMdlEx(&MmMdlUnmappedUnallocated,
- 0x40000000,
+ BL_MM_REMOVE_PHYSICAL_REGION_FLAG,
Descriptor->BasePage,
Descriptor->PageCount,
NULL);
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