diff options
Diffstat (limited to 'PrmPkg/Samples/PrmSamplePrintModule/PrmSamplePrintModule.c')
| -rw-r--r-- | PrmPkg/Samples/PrmSamplePrintModule/PrmSamplePrintModule.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/PrmPkg/Samples/PrmSamplePrintModule/PrmSamplePrintModule.c b/PrmPkg/Samples/PrmSamplePrintModule/PrmSamplePrintModule.c new file mode 100644 index 0000000000..85e8eb28a2 --- /dev/null +++ b/PrmPkg/Samples/PrmSamplePrintModule/PrmSamplePrintModule.c @@ -0,0 +1,157 @@ +/** @file
+
+ A sample PRM Module implementation. This PRM Module provides 3 PRM handlers that simply take a DEBUG print
+ function from the OS and invoke it with a debug message internal the PRM handler.
+
+ Copyright (c) Microsoft Corporation
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PrmModule.h>
+
+#include <Library/BaseLib.h>
+#include <Library/UefiLib.h>
+
+//
+// PRM Handler GUIDs
+//
+
+// {d5f2ad5f-a347-4d3e-87bc-c2ce63029cc8}
+#define PRM_HANDLER_1_GUID {0xd5f2ad5f, 0xa347, 0x4d3e, {0x87, 0xbc, 0xc2, 0xce, 0x63, 0x02, 0x9c, 0xc8}}
+
+// {a9e7adc3-8cd0-429a-8915-10946ebde318}
+#define PRM_HANDLER_2_GUID {0xa9e7adc3, 0x8cd0, 0x429a, {0x89, 0x15, 0x10, 0x94, 0x6e, 0xbd, 0xe3, 0x18}}
+
+// {b688c214-4081-4eeb-8d26-1eb5a3bcf11a}
+#define PRM_HANDLER_N_GUID {0xb688c214, 0x4081, 0x4eeb, {0x8d, 0x26, 0x1e, 0xb5, 0xa3, 0xbc, 0xf1, 0x1a}}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler currently uses the OS_SERVICES to write a debug message
+ indicating this is PRM handler 1.
+
+ @param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
+ @param[in] ContextBUffer A pointer to the PRM handler context buffer
+
+ @retval EFI_STATUS The PRM handler executed successfully.
+ @retval Others An error occurred in the PRM handler.
+
+**/
+EFI_STATUS
+PRM_EXPORT_API
+EFIAPI
+PrmHandler1 (
+ IN VOID *ParameterBuffer,
+ IN PRM_CONTEXT_BUFFER *ContextBUffer
+ )
+{
+ PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint;
+
+ if (ParameterBuffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // In the POC, the OS debug print service is assumed to be at the beginning of ParameterBuffer
+ OsServiceDebugPrint = *((PRM_OS_SERVICE_DEBUG_PRINT *) ParameterBuffer);
+ if (OsServiceDebugPrint == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ OsServiceDebugPrint ("PRM1 handler sample message!\n");
+
+ return EFI_SUCCESS;
+}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler currently uses the OS_SERVICES to write a debug message
+ indicating this is PRM handler 2.
+
+ @param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
+ @param[in] ContextBUffer A pointer to the PRM handler context buffer
+
+ @retval EFI_STATUS The PRM handler executed successfully.
+ @retval Others An error occurred in the PRM handler.
+
+**/
+EFI_STATUS
+PRM_EXPORT_API
+EFIAPI
+PrmHandler2 (
+ IN VOID *ParameterBuffer,
+ IN PRM_CONTEXT_BUFFER *ContextBUffer
+ )
+{
+ PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint;
+
+ if (ParameterBuffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // In the POC, the OS debug print service is assumed to be at the beginning of ParameterBuffer
+ OsServiceDebugPrint = *((PRM_OS_SERVICE_DEBUG_PRINT *) ParameterBuffer);
+ if (OsServiceDebugPrint == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ OsServiceDebugPrint ("PRM2 handler sample message!\n");
+
+ return EFI_SUCCESS;
+}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler currently uses the OS_SERVICES to write a debug message
+ indicating this is PRM handler N.
+
+ @param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
+ @param[in] ContextBUffer A pointer to the PRM handler context buffer
+
+ @retval EFI_STATUS The PRM handler executed successfully.
+ @retval Others An error occurred in the PRM handler.
+
+**/
+EFI_STATUS
+PRM_EXPORT_API
+EFIAPI
+PrmHandlerN (
+ IN VOID *ParameterBuffer,
+ IN PRM_CONTEXT_BUFFER *ContextBUffer
+ )
+{
+ PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint;
+
+ if (ParameterBuffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // In the POC, the OS debug print service is assumed to be at the beginning of ParameterBuffer
+ OsServiceDebugPrint = *((PRM_OS_SERVICE_DEBUG_PRINT *) ParameterBuffer);
+ if (OsServiceDebugPrint == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ OsServiceDebugPrint ("PRMN handler sample message!\n");
+
+ return EFI_SUCCESS;
+}
+
+//
+// Register the PRM export information for this PRM Module
+//
+PRM_MODULE_EXPORT (
+ PRM_HANDLER_EXPORT_ENTRY (PRM_HANDLER_1_GUID, PrmHandler1),
+ PRM_HANDLER_EXPORT_ENTRY (PRM_HANDLER_2_GUID, PrmHandler2),
+ PRM_HANDLER_EXPORT_ENTRY (PRM_HANDLER_N_GUID, PrmHandlerN)
+ );
+
+EFI_STATUS
+EFIAPI
+PrmSamplePrintModuleInit (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ return EFI_SUCCESS;
+}
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