diff options
author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c')
-rw-r--r-- | roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c b/roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c new file mode 100644 index 000000000..ce90c8625 --- /dev/null +++ b/roms/edk2/MdeModulePkg/Universal/ResetSystemPei/ResetSystem.c @@ -0,0 +1,362 @@ +/** @file
+ Implementation of Reset2, ResetFilter and ResetHandler PPIs.
+
+ Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "ResetSystem.h"
+
+GLOBAL_REMOVE_IF_UNREFERENCED CHAR16 *mResetTypeStr[] = {
+ L"Cold", L"Warm", L"Shutdown", L"PlatformSpecific"
+};
+
+EFI_PEI_RESET2_PPI mPpiReset2 = {
+ ResetSystem2
+};
+
+EFI_GUID *mProcessingOrder[] = {
+ &gEdkiiPlatformSpecificResetFilterPpiGuid,
+ &gEdkiiPlatformSpecificResetNotificationPpiGuid,
+ &gEdkiiPlatformSpecificResetHandlerPpiGuid
+};
+
+RESET_FILTER_INSTANCE mResetFilter = {
+ {
+ RegisterResetNotify,
+ UnregisterResetNotify
+ },
+ &gEdkiiPlatformSpecificResetFilterPpiGuid
+};
+
+RESET_FILTER_INSTANCE mResetNotification = {
+ {
+ RegisterResetNotify,
+ UnregisterResetNotify
+ },
+ &gEdkiiPlatformSpecificResetNotificationPpiGuid
+};
+
+RESET_FILTER_INSTANCE mResetHandler = {
+ {
+ RegisterResetNotify,
+ UnregisterResetNotify
+ },
+ &gEdkiiPlatformSpecificResetHandlerPpiGuid
+};
+
+EFI_PEI_PPI_DESCRIPTOR mPpiListReset[] = {
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gEfiPeiReset2PpiGuid,
+ &mPpiReset2
+ },
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gEdkiiPlatformSpecificResetFilterPpiGuid,
+ &mResetFilter.ResetFilter
+ },
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gEdkiiPlatformSpecificResetNotificationPpiGuid,
+ &mResetNotification.ResetFilter
+ },
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+ &gEdkiiPlatformSpecificResetHandlerPpiGuid,
+ &mResetHandler.ResetFilter
+ }
+};
+
+/**
+ Register a notification function to be called when ResetSystem() is called.
+
+ The RegisterResetNotify() function registers a notification function that is called when
+ ResetSystem() is called and prior to completing the reset of the platform.
+ The registered functions must not perform a platform reset themselves. These
+ notifications are intended only for the notification of components which may need some
+ special-purpose maintenance prior to the platform resetting.
+ The list of registered reset notification functions are processed if ResetSystem()is called
+ before ExitBootServices(). The list of registered reset notification functions is ignored if
+ ResetSystem() is called after ExitBootServices().
+
+ @param[in] This A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.
+ @param[in] ResetFunction Points to the function to be called when a ResetSystem() is executed.
+
+ @retval EFI_SUCCESS The reset notification function was successfully registered.
+ @retval EFI_INVALID_PARAMETER ResetFunction is NULL.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to register the reset notification function.
+ @retval EFI_ALREADY_STARTED The reset notification function specified by ResetFunction has already been registered.
+
+**/
+EFI_STATUS
+EFIAPI
+RegisterResetNotify (
+ IN EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PPI *This,
+ IN EFI_RESET_SYSTEM ResetFunction
+ )
+{
+ RESET_FILTER_INSTANCE *ResetFilter;
+ RESET_FILTER_LIST *List;
+ VOID *Hob;
+ UINTN Index;
+
+ if (ResetFunction == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ResetFilter = (RESET_FILTER_INSTANCE *) This;
+ ASSERT (CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetFilterPpiGuid) ||
+ CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetNotificationPpiGuid) ||
+ CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetHandlerPpiGuid)
+ );
+
+ Hob = GetFirstGuidHob (ResetFilter->Guid);
+ if (Hob == NULL) {
+ //
+ // When the GUIDed HOB doesn't exist, create it.
+ //
+ List = (RESET_FILTER_LIST *)BuildGuidHob (
+ ResetFilter->Guid,
+ sizeof (RESET_FILTER_LIST) + sizeof (EFI_RESET_SYSTEM) * PcdGet32 (PcdMaximumPeiResetNotifies)
+ );
+ if (List == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ List->Signature = RESET_FILTER_LIST_SIGNATURE;
+ List->Count = PcdGet32 (PcdMaximumPeiResetNotifies);
+ ZeroMem (List->ResetFilters, sizeof (EFI_RESET_SYSTEM) * List->Count);
+ List->ResetFilters[0] = ResetFunction;
+ return EFI_SUCCESS;
+ } else {
+ List = (RESET_FILTER_LIST *)GET_GUID_HOB_DATA (Hob);
+ ASSERT (List->Signature == RESET_FILTER_LIST_SIGNATURE);
+ //
+ // Firstly check whether the ResetFunction is already registerred.
+ //
+ for (Index = 0; Index < List->Count; Index++) {
+ if (List->ResetFilters[Index] == ResetFunction) {
+ break;
+ }
+ }
+ if (Index != List->Count) {
+ return EFI_ALREADY_STARTED;
+ }
+
+ //
+ // Secondly find the first free slot.
+ //
+ for (Index = 0; Index < List->Count; Index++) {
+ if (List->ResetFilters[Index] == NULL) {
+ break;
+ }
+ }
+
+ if (Index == List->Count) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ List->ResetFilters[Index] = ResetFunction;
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ Unregister a notification function.
+
+ The UnregisterResetNotify() function removes the previously registered
+ notification using RegisterResetNotify().
+
+ @param[in] This A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.
+ @param[in] ResetFunction The pointer to the ResetFunction being unregistered.
+
+ @retval EFI_SUCCESS The reset notification function was unregistered.
+ @retval EFI_INVALID_PARAMETER ResetFunction is NULL.
+ @retval EFI_INVALID_PARAMETER The reset notification function specified by ResetFunction was not previously
+ registered using RegisterResetNotify().
+
+**/
+EFI_STATUS
+EFIAPI
+UnregisterResetNotify (
+ IN EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PPI *This,
+ IN EFI_RESET_SYSTEM ResetFunction
+ )
+{
+
+ RESET_FILTER_INSTANCE *ResetFilter;
+ RESET_FILTER_LIST *List;
+ VOID *Hob;
+ UINTN Index;
+
+ if (ResetFunction == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ResetFilter = (RESET_FILTER_INSTANCE *)This;
+ ASSERT (CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetFilterPpiGuid) ||
+ CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetNotificationPpiGuid) ||
+ CompareGuid (ResetFilter->Guid, &gEdkiiPlatformSpecificResetHandlerPpiGuid)
+ );
+
+ Hob = GetFirstGuidHob (ResetFilter->Guid);
+ if (Hob == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ List = (RESET_FILTER_LIST *)GET_GUID_HOB_DATA (Hob);
+ ASSERT (List->Signature == RESET_FILTER_LIST_SIGNATURE);
+ for (Index = 0; Index < List->Count; Index++) {
+ if (List->ResetFilters[Index] == ResetFunction) {
+ break;
+ }
+ }
+
+ if (Index == List->Count) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ List->ResetFilters[Index] = NULL;
+ return EFI_SUCCESS;
+}
+
+
+/**
+ The PEIM's entry point.
+
+ It initializes the Reset2, ResetFilter and ResetHandler PPIs.
+
+ @param[in] FileHandle Handle of the file being invoked.
+ @param[in] PeiServices Describes the list of possible PEI Services.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval EFI_ALREADY_STARTED The Reset2 PPI was already installed.
+ @retval others Status code returned from PeiServicesInstallPpi().
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeResetSystem (
+ IN EFI_PEI_FILE_HANDLE FileHandle,
+ IN CONST EFI_PEI_SERVICES **PeiServices
+ )
+{
+ EFI_STATUS Status;
+ VOID *Ppi;
+
+ Status = PeiServicesLocatePpi (&gEfiPeiReset2PpiGuid, 0, NULL, (VOID **)&Ppi);
+ if (Status != EFI_NOT_FOUND) {
+ return EFI_ALREADY_STARTED;
+ }
+
+ PeiServicesInstallPpi (mPpiListReset);
+
+ return Status;
+}
+
+/**
+ Resets the entire platform.
+
+ @param[in] ResetType The type of reset to perform.
+ @param[in] ResetStatus The status code for the reset.
+ @param[in] DataSize The size, in bytes, of ResetData.
+ @param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
+ EfiResetShutdown the data buffer starts with a Null-terminated
+ string, optionally followed by additional binary data.
+ The string is a description that the caller may use to further
+ indicate the reason for the system reset.
+ For a ResetType of EfiResetPlatformSpecific the data buffer
+ also starts with a Null-terminated string that is followed
+ by an EFI_GUID that describes the specific type of reset to perform.
+**/
+VOID
+EFIAPI
+ResetSystem2 (
+ IN EFI_RESET_TYPE ResetType,
+ IN EFI_STATUS ResetStatus,
+ IN UINTN DataSize,
+ IN VOID *ResetData OPTIONAL
+ )
+{
+ VOID *Hob;
+ UINTN Index;
+ RESET_FILTER_LIST *List;
+ UINTN OrderIndex;
+ UINT8 RecursionDepth;
+ UINT8 *RecursionDepthPointer;
+
+ //
+ // The recursion depth is stored in GUIDed HOB using gEfiCallerIdGuid.
+ //
+ Hob = GetFirstGuidHob (&gEfiCallerIdGuid);
+ if (Hob == NULL) {
+ RecursionDepth = 0;
+ RecursionDepthPointer = BuildGuidDataHob (&gEfiCallerIdGuid, &RecursionDepth, sizeof (RecursionDepth));
+ } else {
+ RecursionDepthPointer = (UINT8 *)GET_GUID_HOB_DATA (Hob);
+ }
+ //
+ // Only do REPORT_STATUS_CODE() on first call to ResetSystem()
+ //
+ if (*RecursionDepthPointer == 0) {
+ //
+ // Indicate reset system PEI service is called.
+ //
+ REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_SERVICE | EFI_SW_PS_PC_RESET_SYSTEM));
+ }
+
+ //
+ // Increase the call depth
+ //
+ (*RecursionDepthPointer)++;
+ DEBUG ((DEBUG_INFO, "PEI ResetSystem2: Reset call depth = %d.\n", *RecursionDepthPointer));
+
+ if (*RecursionDepthPointer <= MAX_RESET_NOTIFY_DEPTH) {
+ //
+ // Iteratively call Reset Filters and Reset Handlers.
+ //
+ for (OrderIndex = 0; OrderIndex < ARRAY_SIZE (mProcessingOrder); OrderIndex++) {
+ Hob = GetFirstGuidHob (mProcessingOrder[OrderIndex]);
+ if (Hob != NULL) {
+ List = (RESET_FILTER_LIST *)GET_GUID_HOB_DATA (Hob);
+ ASSERT (List->Signature == RESET_FILTER_LIST_SIGNATURE);
+
+ for (Index = 0; Index < List->Count; Index++) {
+ if (List->ResetFilters[Index] != NULL) {
+ List->ResetFilters[Index] (ResetType, ResetStatus, DataSize, ResetData);
+ }
+ }
+ }
+ }
+ } else {
+ ASSERT (ResetType < ARRAY_SIZE (mResetTypeStr));
+ DEBUG ((DEBUG_ERROR, "PEI ResetSystem2: Maximum reset call depth is met. Use the current reset type: %s!\n", mResetTypeStr[ResetType]));
+ }
+
+ switch (ResetType) {
+ case EfiResetWarm:
+ ResetWarm ();
+ break;
+
+ case EfiResetCold:
+ ResetCold ();
+ break;
+
+ case EfiResetShutdown:
+ ResetShutdown ();
+ return ;
+
+ case EfiResetPlatformSpecific:
+ ResetPlatformSpecific (DataSize, ResetData);
+ return;
+
+ default:
+ return ;
+ }
+
+ //
+ // Given we should have reset getting here would be bad
+ //
+ ASSERT (FALSE);
+}
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