diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-03-05 14:32:48 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2019-12-11 11:10:47 +0000 |
| commit | 2fe25a74d6fee3c2ac0b930f7f3596cb432e766e (patch) | |
| tree | 8008090359d004404f69a4d240bbb22b74b30afe /ArmPkg/Drivers/MmCommunicationDxe | |
| parent | d3add11e87dace180387562d6f1951f2bffbd3d9 (diff) | |
| download | edk2-2fe25a74d6fee3c2ac0b930f7f3596cb432e766e.tar.gz edk2-2fe25a74d6fee3c2ac0b930f7f3596cb432e766e.tar.bz2 edk2-2fe25a74d6fee3c2ac0b930f7f3596cb432e766e.zip | |
ArmPkg/MmCommunicationDxe: relay architected PI events to MM context
PI defines a few architected events that have significance in the MM
context as well as in the non-secure DXE context. So register notify
handlers for these events, and relay them into the standalone MM world.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Diffstat (limited to 'ArmPkg/Drivers/MmCommunicationDxe')
| -rw-r--r-- | ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.c | 47 | ||||
| -rw-r--r-- | ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf | 5 |
2 files changed, 50 insertions, 2 deletions
diff --git a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.c b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.c index d06dcc4d20..5f52afa0fe 100644 --- a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.c +++ b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.c @@ -259,6 +259,43 @@ GetMmCompatibility () return Status;
}
+STATIC EFI_GUID* CONST mGuidedEventGuid[] = {
+ &gEfiEndOfDxeEventGroupGuid,
+ &gEfiEventExitBootServicesGuid,
+ &gEfiEventReadyToBootGuid,
+};
+
+STATIC EFI_EVENT mGuidedEvent[ARRAY_SIZE (mGuidedEventGuid)];
+
+/**
+ Event notification that is fired when GUIDed Event Group is signaled.
+
+ @param Event The Event that is being processed, not used.
+ @param Context Event Context, not used.
+
+**/
+STATIC
+VOID
+EFIAPI
+MmGuidedEventNotify (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_MM_COMMUNICATE_HEADER Header;
+ UINTN Size;
+
+ //
+ // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure
+ //
+ CopyGuid (&Header.HeaderGuid, Context);
+ Header.MessageLength = 1;
+ Header.Data[0] = 0;
+
+ Size = sizeof (Header);
+ MmCommunicationCommunicate (&mMmCommunication, &Header, &Size);
+}
+
/**
The Entry Point for MM Communication
@@ -281,6 +318,7 @@ MmCommunicationInitialize ( )
{
EFI_STATUS Status;
+ UINTN Index;
// Check if we can make the MM call
Status = GetMmCompatibility ();
@@ -345,8 +383,13 @@ MmCommunicationInitialize ( NULL,
&mSetVirtualAddressMapEvent
);
- if (Status == EFI_SUCCESS) {
- return Status;
+ ASSERT_EFI_ERROR (Status);
+
+ for (Index = 0; Index < ARRAY_SIZE (mGuidedEventGuid); Index++) {
+ Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
+ MmGuidedEventNotify, mGuidedEventGuid[Index],
+ mGuidedEventGuid[Index], &mGuidedEvent[Index]);
+ ASSERT_EFI_ERROR (Status);
}
gBS->UninstallProtocolInterface (
diff --git a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf index 450fc9bb54..505228704e 100644 --- a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf +++ b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf @@ -42,6 +42,11 @@ [Protocols]
gEfiMmCommunicationProtocolGuid ## PRODUCES
+[Guids]
+ gEfiEndOfDxeEventGroupGuid
+ gEfiEventExitBootServicesGuid
+ gEfiEventReadyToBootGuid
+
[Pcd.common]
gArmTokenSpaceGuid.PcdMmBufferBase
gArmTokenSpaceGuid.PcdMmBufferSize
|