summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMichael Kubacki <michael.kubacki@microsoft.com>2020-06-10 16:28:30 -0700
committermergify[bot] <37929162+mergify[bot]@users.noreply.github.com>2022-04-05 00:42:38 +0000
commit4c8486fd72156b1327206121572f3959ba7afa59 (patch)
tree977b7b03f1aeeb831a4abc035de4a22f385cc927
parentc1a7a50f67a3d3ac3b9c21275181a695b879403c (diff)
downloadedk2-4c8486fd72156b1327206121572f3959ba7afa59.tar.gz
edk2-4c8486fd72156b1327206121572f3959ba7afa59.tar.bz2
edk2-4c8486fd72156b1327206121572f3959ba7afa59.zip
PrmPkg/PrmSampleHardwareAccessModule: Add non-print PRM handlers
For each PRM handler that is currently present, a corresponding PRM handler is added that does not print. This allows a caller to execute a sample hardware access PRM handler without requiring that caller to provide a debug print service. Cc: Andrew Fish <afish@apple.com> Cc: Kang Gao <kang.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Benjamin You <benjamin.you@intel.com> Cc: Liu Yun <yun.y.liu@intel.com> Cc: Ankit Sinha <ankit.sinha@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Acked-by: Michael D Kinney <michael.d.kinney@intel.com> Acked-by: Liming Gao <gaoliming@byosoft.com.cn> Acked-by: Leif Lindholm <quic_llindhol@quicinc.com> Reviewed-by: Ankit Sinha <ankit.sinha@intel.com>
-rw-r--r--PrmPkg/Samples/PrmSampleHardwareAccessModule/PrmSampleHardwareAccessModule.c363
1 files changed, 237 insertions, 126 deletions
diff --git a/PrmPkg/Samples/PrmSampleHardwareAccessModule/PrmSampleHardwareAccessModule.c b/PrmPkg/Samples/PrmSampleHardwareAccessModule/PrmSampleHardwareAccessModule.c
index 87fe9cafc9..32e04c5e85 100644
--- a/PrmPkg/Samples/PrmSampleHardwareAccessModule/PrmSampleHardwareAccessModule.c
+++ b/PrmPkg/Samples/PrmSampleHardwareAccessModule/PrmSampleHardwareAccessModule.c
@@ -27,12 +27,21 @@
// {2120cd3c-848b-4d8f-abbb-4b74ce64ac89}
#define MSR_ACCESS_MICROCODE_SIGNATURE_PRM_HANDLER_GUID {0x2120cd3c, 0x848b, 0x4d8f, {0xab, 0xbb, 0x4b, 0x74, 0xce, 0x64, 0xac, 0x89}}
+// {5d28b4e7-3867-4aee-aa09-51fc282c3b22}
+#define MSR_PRINT_MICROCODE_SIGNATURE_PRM_HANDLER_GUID {0x5d28b4e7, 0x3867, 0x4aee, {0xaa, 0x09, 0x51, 0xfc, 0x28, 0x2c, 0x3b, 0x22}}
+
// {ea0935a7-506b-4159-bbbb-48deeecb6f58}
#define MSR_ACCESS_MTRR_DUMP_PRM_HANDLER_GUID {0xea0935a7, 0x506b, 0x4159, {0xbb, 0xbb, 0x48, 0xde, 0xee, 0xcb, 0x6f, 0x58}}
+// {4b64b702-4d2b-4dfe-ac5a-0b4110a2ca47}
+#define MSR_PRINT_MTRR_DUMP_PRM_HANDLER_GUID {0x4b64b702, 0x4d2b, 0x4dfe, {0xac, 0x5a, 0x0b, 0x41, 0x10, 0xa2, 0xca, 0x47}}
+
// {1bd1bda9-909a-4614-9699-25ec0c2783f7}
#define MMIO_ACCESS_HPET_PRM_HANDLER_GUID {0x1bd1bda9, 0x909a, 0x4614, {0x96, 0x99, 0x25, 0xec, 0x0c, 0x27, 0x83, 0xf7}}
+// {8a0efdde-78d0-45f0-aea0-c28245c7e1db}
+#define MMIO_PRINT_HPET_PRM_HANDLER_GUID {0x8a0efdde, 0x78d0, 0x45f0, {0xae, 0xa0, 0xc2, 0x82, 0x45, 0xc7, 0xe1, 0xdb}}
+
#define HPET_BASE_ADDRESS 0xFED00000
//
@@ -124,13 +133,18 @@ MtrrLibApplyVariableMtrrs (
//
/**
- Prints all MTRR values including architectural and variable MTTRs.
+ Accesses MTRR values including architectural and variable MTRRs.
+
+ If the optional OsServiceDebugPrint function pointer is provided that function is
+ used to print the MTRR settings.
+
+ @param[in] OsServiceDebugPrint A pointer to an OS-provided debug print function.
**/
VOID
EFIAPI
-PrintAllMtrrs (
- IN PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint
+AccessAllMtrrs (
+ IN PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint OPTIONAL
)
{
MTRR_SETTINGS LocalMtrrs;
@@ -148,7 +162,7 @@ PrintAllMtrrs (
];
MTRR_MEMORY_RANGE RawVariableRanges[ARRAY_SIZE (Mtrrs->Variables.Mtrr)];
- if (OsServiceDebugPrint == NULL || !IsMtrrSupported ()) {
+ if (!IsMtrrSupported ()) {
return;
}
@@ -160,56 +174,63 @@ PrintAllMtrrs (
//
// Dump RAW MTRR contents
//
- OsServiceDebugPrint (" MTRR Settings:\n");
- OsServiceDebugPrint (" =============\n");
+ if (OsServiceDebugPrint != NULL) {
+ OsServiceDebugPrint (" MTRR Settings:\n");
+ OsServiceDebugPrint (" =============\n");
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " MTRR Default Type: %016lx\n",
- Mtrrs->MtrrDefType
- );
- OsServiceDebugPrint (&DebugMessage[0]);
-
- for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
AsciiSPrint (
&DebugMessage[0],
ARRAY_SIZE (DebugMessage),
- " Fixed MTRR[%02d] : %016lx\n",
- Index,
- Mtrrs->Fixed.Mtrr[Index]
+ " MTRR Default Type: %016lx\n",
+ Mtrrs->MtrrDefType
);
OsServiceDebugPrint (&DebugMessage[0]);
}
- ContainVariableMtrr = FALSE;
- for (Index = 0; Index < VariableMtrrCount; Index++) {
- if ((Mtrrs->Variables.Mtrr[Index].Mask & BIT11) == 0) {
- //
- // If mask is not valid, then do not display range
- //
- continue;
+
+ if (OsServiceDebugPrint != NULL) {
+ for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " Fixed MTRR[%02d] : %016lx\n",
+ Index,
+ Mtrrs->Fixed.Mtrr[Index]
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
+ }
+
+ ContainVariableMtrr = FALSE;
+ for (Index = 0; Index < VariableMtrrCount; Index++) {
+ if ((Mtrrs->Variables.Mtrr[Index].Mask & BIT11) == 0) {
+ //
+ // If mask is not valid, then do not display range
+ //
+ continue;
+ }
+ ContainVariableMtrr = TRUE;
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " Variable MTRR[%02d]: Base=%016lx Mask=%016lx\n",
+ Index,
+ Mtrrs->Variables.Mtrr[Index].Base,
+ Mtrrs->Variables.Mtrr[Index].Mask
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
}
- ContainVariableMtrr = TRUE;
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " Variable MTRR[%02d]: Base=%016lx Mask=%016lx\n",
- Index,
- Mtrrs->Variables.Mtrr[Index].Base,
- Mtrrs->Variables.Mtrr[Index].Mask
- );
- OsServiceDebugPrint (&DebugMessage[0]);
- }
- if (!ContainVariableMtrr) {
- OsServiceDebugPrint (" Variable MTRR : None.\n");
+ if (!ContainVariableMtrr) {
+ OsServiceDebugPrint (" Variable MTRR : None.\n");
+ }
+ OsServiceDebugPrint ("\n");
}
- OsServiceDebugPrint ("\n");
//
// Dump MTRR setting in ranges
//
- OsServiceDebugPrint (" Memory Ranges:\n");
- OsServiceDebugPrint (" ====================================\n");
+ if (OsServiceDebugPrint != NULL) {
+ OsServiceDebugPrint (" Memory Ranges:\n");
+ OsServiceDebugPrint (" ====================================\n");
+ }
MtrrLibInitializeMtrrMask (&MtrrValidBitsMask, &MtrrValidAddressMask);
Ranges[0].BaseAddress = 0;
Ranges[0].Length = MtrrValidBitsMask + 1;
@@ -227,15 +248,17 @@ PrintAllMtrrs (
MtrrLibApplyFixedMtrrs (&Mtrrs->Fixed, Ranges, ARRAY_SIZE (Ranges), &RangeCount);
- for (Index = 0; Index < RangeCount; Index++) {
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " %a:%016lx-%016lx\n",
- mMtrrMemoryCacheTypeShortName[Ranges[Index].Type],
- Ranges[Index].BaseAddress, Ranges[Index].BaseAddress + Ranges[Index].Length - 1
- );
- OsServiceDebugPrint (&DebugMessage[0]);
+ if (OsServiceDebugPrint != NULL) {
+ for (Index = 0; Index < RangeCount; Index++) {
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " %a:%016lx-%016lx\n",
+ mMtrrMemoryCacheTypeShortName[Ranges[Index].Type],
+ Ranges[Index].BaseAddress, Ranges[Index].BaseAddress + Ranges[Index].Length - 1
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
+ }
}
}
@@ -277,12 +300,17 @@ HpetRead (
}
/**
- Prints HPET configuration information.
+ Accesses HPET configuration information.
+
+ If the optional OsServiceDebugPrint function pointer is provided that function is
+ used to print HPET settings.
+
+ @param[in] OsServiceDebugPrint A pointer to an OS-provided debug print function
**/
VOID
EFIAPI
-PrintHpetConfiguration (
+AccessHpetConfiguration (
IN PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint
)
{
@@ -291,92 +319,109 @@ PrintHpetConfiguration (
HPET_GENERAL_CONFIGURATION_REGISTER HpetGeneralConfiguration;
CHAR8 DebugMessage[256];
- if (OsServiceDebugPrint == NULL) {
- return;
- }
-
HpetGeneralCapabilities.Uint64 = HpetRead (HPET_GENERAL_CAPABILITIES_ID_OFFSET);
HpetGeneralConfiguration.Uint64 = HpetRead (HPET_GENERAL_CONFIGURATION_OFFSET);
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET Base Address = 0x%08x\n",
- HPET_BASE_ADDRESS
- );
- OsServiceDebugPrint (&DebugMessage[0]);
-
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET_GENERAL_CAPABILITIES_ID = 0x%016lx\n",
- HpetGeneralCapabilities
- );
- OsServiceDebugPrint (&DebugMessage[0]);
-
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET_GENERAL_CONFIGURATION = 0x%016lx\n",
- HpetGeneralConfiguration.Uint64
- );
- OsServiceDebugPrint (&DebugMessage[0]);
-
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET_GENERAL_INTERRUPT_STATUS = 0x%016lx\n",
- HpetRead (HPET_GENERAL_INTERRUPT_STATUS_OFFSET)
- );
- OsServiceDebugPrint (&DebugMessage[0]);
+ if (OsServiceDebugPrint != NULL) {
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET Base Address = 0x%08x\n",
+ HPET_BASE_ADDRESS
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET_MAIN_COUNTER = 0x%016lx\n",
- HpetRead (HPET_MAIN_COUNTER_OFFSET)
- );
- OsServiceDebugPrint (&DebugMessage[0]);
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET_GENERAL_CAPABILITIES_ID = 0x%016lx\n",
+ HpetGeneralCapabilities
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
- AsciiSPrint (
- &DebugMessage[0],
- ARRAY_SIZE (DebugMessage),
- " HPET Main Counter Period = %d (fs)\n",
- HpetGeneralCapabilities.Bits.CounterClockPeriod
- );
- OsServiceDebugPrint (&DebugMessage[0]);
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET_GENERAL_CONFIGURATION = 0x%016lx\n",
+ HpetGeneralConfiguration.Uint64
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
- for (TimerIndex = 0; TimerIndex <= HpetGeneralCapabilities.Bits.NumberOfTimers; TimerIndex++) {
AsciiSPrint (
&DebugMessage[0],
ARRAY_SIZE (DebugMessage),
- " HPET_TIMER%d_CONFIGURATION = 0x%016lx\n",
- TimerIndex,
- HpetRead (HPET_TIMER_CONFIGURATION_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ " HPET_GENERAL_INTERRUPT_STATUS = 0x%016lx\n",
+ HpetRead (HPET_GENERAL_INTERRUPT_STATUS_OFFSET)
);
OsServiceDebugPrint (&DebugMessage[0]);
AsciiSPrint (
&DebugMessage[0],
ARRAY_SIZE (DebugMessage),
- " HPET_TIMER%d_COMPARATOR = 0x%016lx\n",
- TimerIndex,
- HpetRead (HPET_TIMER_COMPARATOR_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ " HPET_MAIN_COUNTER = 0x%016lx\n",
+ HpetRead (HPET_MAIN_COUNTER_OFFSET)
);
OsServiceDebugPrint (&DebugMessage[0]);
AsciiSPrint (
&DebugMessage[0],
ARRAY_SIZE (DebugMessage),
- " HPET_TIMER%d_MSI_ROUTE = 0x%016lx\n",
- TimerIndex,
- HpetRead (HPET_TIMER_MSI_ROUTE_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ " HPET Main Counter Period = %d (fs)\n",
+ HpetGeneralCapabilities.Bits.CounterClockPeriod
);
OsServiceDebugPrint (&DebugMessage[0]);
+
+ for (TimerIndex = 0; TimerIndex <= HpetGeneralCapabilities.Bits.NumberOfTimers; TimerIndex++) {
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET_TIMER%d_CONFIGURATION = 0x%016lx\n",
+ TimerIndex,
+ HpetRead (HPET_TIMER_CONFIGURATION_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
+
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET_TIMER%d_COMPARATOR = 0x%016lx\n",
+ TimerIndex,
+ HpetRead (HPET_TIMER_COMPARATOR_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
+
+ AsciiSPrint (
+ &DebugMessage[0],
+ ARRAY_SIZE (DebugMessage),
+ " HPET_TIMER%d_MSI_ROUTE = 0x%016lx\n",
+ TimerIndex,
+ HpetRead (HPET_TIMER_MSI_ROUTE_OFFSET + TimerIndex * HPET_TIMER_STRIDE)
+ );
+ OsServiceDebugPrint (&DebugMessage[0]);
+ }
}
}
/**
+ Reads the microcode signature from architectural MSR 0x8B.
+
+ @retval MicrocodeSignature The microcode signature value.
+**/
+UINT32
+GetMicrocodeSignature (
+ VOID
+ )
+{
+ MSR_IA32_BIOS_SIGN_ID_REGISTER BiosSignIdMsr;
+
+ AsmWriteMsr64 (MSR_IA32_BIOS_SIGN_ID, 0);
+ AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, NULL);
+ BiosSignIdMsr.Uint64 = AsmReadMsr64 (MSR_IA32_BIOS_SIGN_ID);
+
+ return BiosSignIdMsr.Bits.MicrocodeUpdateSignature;
+}
+
+/**
Prints the microcode update signature as read from architectural MSR 0x8B.
**/
@@ -386,22 +431,20 @@ PrintMicrocodeUpdateSignature (
IN PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint
)
{
- MSR_IA32_BIOS_SIGN_ID_REGISTER BiosSignIdMsr;
+ UINT32 MicrocodeSignature;
CHAR8 DebugMessage[256];
if (OsServiceDebugPrint == NULL) {
return;
}
- AsmWriteMsr64 (MSR_IA32_BIOS_SIGN_ID, 0);
- AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, NULL);
- BiosSignIdMsr.Uint64 = AsmReadMsr64 (MSR_IA32_BIOS_SIGN_ID);
+ MicrocodeSignature = GetMicrocodeSignature ();
AsciiSPrint (
&DebugMessage[0],
ARRAY_SIZE (DebugMessage),
" Signature read = 0x%x.\n",
- BiosSignIdMsr.Bits.MicrocodeUpdateSignature
+ MicrocodeSignature
);
OsServiceDebugPrint (&DebugMessage[0]);
}
@@ -409,7 +452,7 @@ PrintMicrocodeUpdateSignature (
/**
A sample Platform Runtime Mechanism (PRM) handler.
- This sample handler attempts to read the microcode update signature MSR and print the result to a debug message.
+ This sample handler attempts to read the microcode update signature.
@param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
@param[in] ContextBUffer A pointer to the PRM handler context buffer
@@ -420,13 +463,39 @@ PrintMicrocodeUpdateSignature (
**/
PRM_HANDLER_EXPORT (MsrAccessMicrocodeSignaturePrmHandler)
{
+ UINT32 MicrocodeSignature;
+
+ MicrocodeSignature = 0;
+ MicrocodeSignature = GetMicrocodeSignature ();
+
+ if (MicrocodeSignature == 0) {
+ return EFI_NOT_FOUND;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler attempts to read the microcode update signature MSR and print the result to a debug message.
+
+ @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.
+
+**/
+PRM_HANDLER_EXPORT (MsrPrintMicrocodeSignaturePrmHandler)
+{
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
+ // 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;
@@ -443,7 +512,7 @@ PRM_HANDLER_EXPORT (MsrAccessMicrocodeSignaturePrmHandler)
/**
A sample Platform Runtime Mechanism (PRM) handler.
- This sample handler attempts to read the current MTRR settings and print the result to a debug message.
+ This sample handler attempts to read the current MTRR settings.
@param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
@param[in] ContextBUffer A pointer to the PRM handler context buffer
@@ -454,6 +523,25 @@ PRM_HANDLER_EXPORT (MsrAccessMicrocodeSignaturePrmHandler)
**/
PRM_HANDLER_EXPORT (MsrAccessMtrrDumpPrmHandler)
{
+ AccessAllMtrrs (NULL);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler attempts to read the current MTRR settings and print the result to a debug message.
+
+ @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.
+
+**/
+PRM_HANDLER_EXPORT (MsrPrintMtrrDumpPrmHandler)
+{
PRM_OS_SERVICE_DEBUG_PRINT OsServiceDebugPrint;
if (ParameterBuffer == NULL) {
@@ -468,16 +556,17 @@ PRM_HANDLER_EXPORT (MsrAccessMtrrDumpPrmHandler)
OsServiceDebugPrint ("Hardware Access MsrAccessMtrrDumpPrmHandler entry.\n");
OsServiceDebugPrint (" Attempting to dump MTRR values:\n");
- PrintAllMtrrs (OsServiceDebugPrint);
+ AccessAllMtrrs (OsServiceDebugPrint);
OsServiceDebugPrint ("Hardware Access MsrAccessMtrrDumpPrmHandler exit.\n");
return EFI_SUCCESS;
}
+
/**
A sample Platform Runtime Mechanism (PRM) handler.
- This sample handler attempts to read from a HPET MMIO resource and print the result to a debug message.
+ This sample handler attempts to read from a HPET MMIO resource.
@param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
@param[in] ContextBUffer A pointer to the PRM handler context buffer
@@ -488,22 +577,41 @@ PRM_HANDLER_EXPORT (MsrAccessMtrrDumpPrmHandler)
**/
PRM_HANDLER_EXPORT (MmioAccessHpetPrmHandler)
{
+ AccessHpetConfiguration (NULL);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ A sample Platform Runtime Mechanism (PRM) handler.
+
+ This sample handler attempts to read from a HPET MMIO resource and print the result to a debug message.
+
+ @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.
+
+**/
+PRM_HANDLER_EXPORT (MmioPrintHpetPrmHandler)
+{
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
+ // An 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 ("Hardware Access MmioAccessHpetPrmHandler entry.\n");
+ OsServiceDebugPrint ("Hardware Access MmioPrintHpetPrmHandler entry.\n");
OsServiceDebugPrint (" Attempting to read HPET configuration...\n");
- PrintHpetConfiguration (OsServiceDebugPrint);
- OsServiceDebugPrint ("Hardware Access MmioAccessHpetPrmHandler exit.\n");
+ AccessHpetConfiguration (OsServiceDebugPrint);
+ OsServiceDebugPrint ("Hardware Access MmioPrintHpetPrmHandler exit.\n");
return EFI_SUCCESS;
}
@@ -514,7 +622,10 @@ PRM_HANDLER_EXPORT (MmioAccessHpetPrmHandler)
PRM_MODULE_EXPORT (
PRM_HANDLER_EXPORT_ENTRY (MSR_ACCESS_MICROCODE_SIGNATURE_PRM_HANDLER_GUID, MsrAccessMicrocodeSignaturePrmHandler),
PRM_HANDLER_EXPORT_ENTRY (MSR_ACCESS_MTRR_DUMP_PRM_HANDLER_GUID, MsrAccessMtrrDumpPrmHandler),
- PRM_HANDLER_EXPORT_ENTRY (MMIO_ACCESS_HPET_PRM_HANDLER_GUID, MmioAccessHpetPrmHandler)
+ PRM_HANDLER_EXPORT_ENTRY (MMIO_ACCESS_HPET_PRM_HANDLER_GUID, MmioAccessHpetPrmHandler),
+ PRM_HANDLER_EXPORT_ENTRY (MSR_PRINT_MICROCODE_SIGNATURE_PRM_HANDLER_GUID, MsrPrintMicrocodeSignaturePrmHandler),
+ PRM_HANDLER_EXPORT_ENTRY (MSR_PRINT_MTRR_DUMP_PRM_HANDLER_GUID, MsrPrintMtrrDumpPrmHandler),
+ PRM_HANDLER_EXPORT_ENTRY (MMIO_PRINT_HPET_PRM_HANDLER_GUID, MmioPrintHpetPrmHandler)
);
/**