From 0f0422cedc752d305d8d12a25b11e1dff4d8ff8b Mon Sep 17 00:00:00 2001
From: Gua Guo <gua.guo@intel.com>
Date: Wed, 10 May 2023 10:15:35 +0800
Subject: MdeModulePkg: Add TraceHubDebugSysTLib library

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4144

This Library provides API to dump Trace Hub message.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Guo Gua <gua.guo@intel.com>
Cc: Chan Laura <laura.chan@intel.com>
Cc: Prakashan Krishnadas Veliyathuparambil <krishnadas.veliyathuparambil.prakashan@intel.com>
Cc: K N Karthik <karthik.k.n@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Guo Gua <gua.guo@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: K N Karthik <karthik.k.n@intel.com>
Reviewed-by: Chan Laura <laura.chan@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
---
 .../TraceHubDebugSysTLib/InternalTraceHubApi.c     | 74 ++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 MdeModulePkg/Library/TraceHubDebugSysTLib/InternalTraceHubApi.c

(limited to 'MdeModulePkg/Library/TraceHubDebugSysTLib/InternalTraceHubApi.c')

diff --git a/MdeModulePkg/Library/TraceHubDebugSysTLib/InternalTraceHubApi.c b/MdeModulePkg/Library/TraceHubDebugSysTLib/InternalTraceHubApi.c
new file mode 100644
index 0000000000..fe946fe60c
--- /dev/null
+++ b/MdeModulePkg/Library/TraceHubDebugSysTLib/InternalTraceHubApi.c
@@ -0,0 +1,74 @@
+/** @file
+Functions implementation in this file are not common for all type of TraceHubDebugSysTLib.
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Guid/TraceHubDebugInfoHob.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/HobLib.h>
+#include "InternalTraceHubApi.h"
+
+/**
+  Count the total number of Trace Hub debug instance in the system.
+
+  @retval UINT32      The total number of Trace Hub debug instance in the system.
+**/
+UINT32
+EFIAPI
+CountThDebugInstance (
+  VOID
+  )
+{
+  UINT8   *DbgContext;
+  UINT32  DbgInstCount;
+
+  DbgInstCount = 0;
+
+  DbgContext = (UINT8 *)GetFirstGuidHob (&gTraceHubDebugInfoHobGuid);
+  if (DbgContext != NULL) {
+    while (DbgContext != NULL) {
+      DbgInstCount++;
+      DbgContext = (UINT8 *)GetNextGuidHob (&gTraceHubDebugInfoHobGuid, GET_NEXT_HOB (DbgContext));
+    }
+  } else {
+    DbgInstCount++;
+  }
+
+  return DbgInstCount;
+}
+
+/**
+  Pack Trace Hub debug instances in the system.
+
+  @param[in, out]  ThPtr     A pointer to TRACEHUB_DEBUG_INFO_HOB structure.
+  @param[in]       Count     Number of Trace Hub HOBs.
+**/
+VOID
+EFIAPI
+PackThDebugInstance (
+  IN OUT TRACEHUB_DEBUG_INFO_HOB  *ThPtr,
+  IN     UINT32                   Count
+  )
+{
+  UINT8   *DbgContext;
+  UINT16  Index;
+
+  DbgContext = GetFirstGuidHob (&gTraceHubDebugInfoHobGuid);
+  if (DbgContext != NULL) {
+    for (Index = 0; Index < Count; Index++) {
+      CopyMem (&ThPtr[Index], GET_GUID_HOB_DATA (DbgContext), sizeof (TRACEHUB_DEBUG_INFO_HOB));
+      DbgContext = GetNextGuidHob (&gTraceHubDebugInfoHobGuid, GET_NEXT_HOB (DbgContext));
+    }
+  } else {
+    for (Index = 0; Index < Count; Index++) {
+      ThPtr[Index].TraceHubMmioAddress = FixedPcdGet64 (PcdTraceHubDebugMmioAddress);
+      ThPtr[Index].Flag                = FixedPcdGetBool (PcdEnableTraceHubDebugMsg);
+      ThPtr[Index].DebugLevel          = FixedPcdGet8 (PcdTraceHubDebugLevel);
+    }
+  }
+}
-- 
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