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Move SAL "initialization/virtual address change notification" from EdkUefiRuntimeLib to EdkDxeSalLib.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2009 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
yshang1
2006-11-24 06:02:46 +00:00
parent 9710b9a67c
commit c25aaa00aa
4 changed files with 80 additions and 50 deletions
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50
EdkModulePkg/Library/EdkDxeSalLib/Ipf/EsalServiceLib.c
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@@ -21,6 +21,7 @@ Abstract:
STATIC EXTENDED_SAL_BOOT_SERVICE_PROTOCOL *mEsalBootService;
STATIC EFI_PLABEL mPlabel;
EFI_STATUS
EFIAPI
@@ -29,14 +30,59 @@ DxeSalLibConstruct (
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_PLABEL *Plabel;
EFI_STATUS Status;
Status = gBS->LocateProtocol (&gEfiExtendedSalBootServiceProtocolGuid, NULL, &mEsalBootService);
//
// The protocol contains a function pointer, which is an indirect procedure call.
// An indirect procedure call goes through a plabel, and pointer to a function is
// a pointer to a plabel. To implement indirect procedure calls that can work in
// both physical and virtual mode, two plabels are required (one physical and one
// virtual). So lets grap the physical PLABEL for the EsalEntryPoint and store it
// away. We cache it in a module global, so we can register the vitrual version.
//
Status = gBS->LocateProtocol (&gEfiExtendedSalBootServiceProtocolGuid, NULL, &mEsalBootService);
ASSERT_EFI_ERROR (Status);
Plabel = (EFI_PLABEL *) (UINTN) mEsalBootService->ExtendedSalProc;
mPlabel.EntryPoint = Plabel->EntryPoint;
mPlabel.GP = Plabel->GP;
SetEsalPhysicalEntryPoint (mPlabel.EntryPoint, mPlabel.GP);
return Status;
}
VOID
EFIAPI
DxeSalVirtualNotifyEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
Fixup virtual address pointer of label.
Arguments:
Event - The Event that is being processed
Context - Event Context
Returns:
None
--*/
{
EfiConvertPointer (0x0, (VOID **) &mPlabel.EntryPoint);
EfiConvertPointer (EFI_IPF_GP_POINTER, (VOID **) &mPlabel.GP);
SetEsalVirtualEntryPoint (mPlabel.EntryPoint, mPlabel.GP);
}
EFI_STATUS
EFIAPI
RegisterEsalFunction (