[mirror_edk2.git] / ShellPkg / Library / UefiShellAcpiViewCommandLib / Parsers / Gtdt / GtdtParser.c

/**\r
  GTDT table parser\r
\r
  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
  @par Reference(s):\r
    - ACPI 6.2 Specification - Errata A, September 2017\r
  **/\r
\r
#include <IndustryStandard/Acpi.h>\r
#include <Library/UefiLib.h>\r
#include "AcpiParser.h"\r
#include "AcpiTableParser.h"\r
\r
// Local variables\r
STATIC CONST UINT32* GtdtPlatformTimerCount;\r
STATIC CONST UINT32* GtdtPlatformTimerOffset;\r
STATIC CONST UINT8*  PlatformTimerType;\r
STATIC CONST UINT16* PlatformTimerLength;\r
STATIC CONST UINT32* GtBlockTimerCount;\r
STATIC CONST UINT32* GtBlockTimerOffset;\r
STATIC CONST UINT16* GtBlockLength;\r
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;\r
\r
/** This function validates the GT Block timer count.\r
\r
  @param [in] Ptr     Pointer to the start of the field data.\r
  @param [in] Context Pointer to context specific information e.g. this\r
                      could be a pointer to the ACPI table header.\r
*/\r
STATIC\r
VOID\r
EFIAPI\r
ValidateGtBlockTimerCount (\r
  IN UINT8* Ptr,\r
  IN VOID*  Context\r
  );\r
\r
/** An ACPI_PARSER array describing the ACPI GTDT Table.\r
*/\r
STATIC CONST ACPI_PARSER GtdtParser[] = {\r
  PARSE_ACPI_HEADER (&AcpiHdrInfo),\r
  {L"CntControlBase Physical Address", 8, 36, L"0x%lx", NULL, NULL,\r
   NULL, NULL},\r
  {L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Secure EL1 timer GSIV", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Secure EL1 timer FLAGS", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Non-Secure EL1 timer GSIV", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Non-Secure EL1 timer FLAGS", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Virtual timer GSIV", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual timer FLAGS", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Non-Secure EL2 timer GSIV", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Non-Secure EL2 timer FLAGS", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"CntReadBase Physical address", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Platform Timer Count", 4, 88, L"%d", NULL,\r
   (VOID**)&GtdtPlatformTimerCount, NULL, NULL},\r
  {L"Platform Timer Offset", 4, 92, L"0x%x", NULL,\r
   (VOID**)&GtdtPlatformTimerOffset, NULL, NULL}\r
};\r
\r
/** An ACPI_PARSER array describing the Platform timer header.\r
*/\r
STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser[] = {\r
  {L"Type", 1, 0, NULL, NULL, (VOID**)&PlatformTimerType, NULL, NULL},\r
  {L"Length", 2, 1, NULL, NULL, (VOID**)&PlatformTimerLength, NULL, NULL},\r
  {L"Reserved", 1, 3, NULL, NULL, NULL, NULL, NULL}\r
};\r
\r
/** An ACPI_PARSER array describing the Platform GT Block.\r
*/\r
STATIC CONST ACPI_PARSER GtBlockParser[] = {\r
  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Length", 2, 1, L"%d", NULL, (VOID**)&GtBlockLength, NULL, NULL},\r
  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
  {L"Physical address (CntCtlBase)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Timer Count", 4, 12, L"%d", NULL, (VOID**)&GtBlockTimerCount,\r
   ValidateGtBlockTimerCount, NULL},\r
  {L"Timer Offset", 4, 16, L"%d", NULL, (VOID**)&GtBlockTimerOffset, NULL,\r
    NULL}\r
};\r
\r
/** An ACPI_PARSER array describing the GT Block timer.\r
*/\r
STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {\r
  {L"Frame Number", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},\r
  {L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,\r
    NULL},\r
  {L"Physical Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Physical Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual Timer GSIV", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual Timer Flags", 4, 32, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Common Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL}\r
};\r
\r
/** An ACPI_PARSER array describing the Platform Watchdog.\r
*/\r
STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser[] = {\r
  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Length", 2, 1, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
  {L"RefreshFrame Physical address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"ControlFrame Physical address", 8, 12, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Watchdog Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Watchdog Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL}\r
};\r
\r
/** This function validates the GT Block timer count.\r
\r
  @param [in] Ptr     Pointer to the start of the field data.\r
  @param [in] Context Pointer to context specific information e.g. this\r
                      could be a pointer to the ACPI table header.\r
*/\r
STATIC\r
VOID\r
EFIAPI\r
ValidateGtBlockTimerCount (\r
  IN UINT8* Ptr,\r
  IN VOID*  Context\r
  )\r
{\r
  UINT32 BlockTimerCount = *(UINT32*)Ptr;\r
  if (BlockTimerCount > 8) {\r
    IncrementErrorCount ();\r
    Print (\r
      L"\nERROR: Timer Count = %d. Max Timer Count is 8.",\r
      BlockTimerCount\r
      );\r
  }\r
}\r
\r
/** This function parses the Platform GT Block.\r
\r
  @param [in] Ptr     Pointer to the start of the GT Block data.\r
  @param [in] Length  Length of the GT Block structure.\r
*/\r
STATIC\r
VOID\r
DumpGTBlock (\r
  IN UINT8* Ptr,\r
  IN UINT16 Length\r
  )\r
{\r
  UINT32 Index;\r
  UINT32 Offset;\r
  UINT16 GTBlockTimerLength;\r
\r
  Offset = ParseAcpi (\r
             TRUE,\r
             2,\r
             "GT Block",\r
             Ptr,\r
             Length,\r
             PARSER_PARAMS (GtBlockParser)\r
             );\r
  GTBlockTimerLength = (*GtBlockLength - Offset) / (*GtBlockTimerCount);\r
  Length -= Offset;\r
\r
  if (*GtBlockTimerCount != 0) {\r
    Ptr += (*GtBlockTimerOffset);\r
    Index = 0;\r
    while ((Index < (*GtBlockTimerCount)) && (Length >= GTBlockTimerLength)) {\r
      Offset = ParseAcpi (\r
                 TRUE,\r
                 2,\r
                 "GT Block Timer",\r
                 Ptr,\r
                 GTBlockTimerLength,\r
                 PARSER_PARAMS (GtBlockTimerParser)\r
                 );\r
      // Increment by GT Block Timer structure size\r
      Ptr += Offset;\r
      Length -= Offset;\r
      Index++;\r
    }\r
\r
    if (Length != 0) {\r
      IncrementErrorCount ();\r
      Print (\r
        L"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",\r
        Length\r
        );\r
    }\r
  }\r
}\r
\r
/** This function parses the Platform Watchdog timer.\r
\r
  @param [in] Ptr     Pointer to the start of the watchdog timer data.\r
  @param [in] Length  Length of the watchdog timer structure.\r
*/\r
STATIC\r
VOID\r
DumpWatchdogTimer (\r
  IN UINT8* Ptr,\r
  IN UINT16 Length\r
  )\r
{\r
  ParseAcpi (\r
    TRUE,\r
    2,\r
    "SBSA Generic Watchdog",\r
    Ptr,\r
    Length,\r
    PARSER_PARAMS (SBSAGenericWatchdogParser)\r
    );\r
}\r
\r
/** This function parses the ACPI GTDT table.\r
  When trace is enabled this function parses the GTDT table and\r
  traces the ACPI table fields.\r
\r
  This function also parses the following platform timer structures:\r
    - GT Block timer\r
    - Watchdog timer\r
\r
  This function also performs validation of the ACPI table fields.\r
\r
  @param [in] Trace              If TRUE, trace the ACPI fields.\r
  @param [in] Ptr                Pointer to the start of the buffer.\r
  @param [in] AcpiTableLength    Length of the ACPI table.\r
  @param [in] AcpiTableRevision  Revision of the ACPI table.\r
*/\r
VOID\r
EFIAPI\r
ParseAcpiGtdt (\r
  IN BOOLEAN Trace,\r
  IN UINT8*  Ptr,\r
  IN UINT32  AcpiTableLength,\r
  IN UINT8   AcpiTableRevision\r
  )\r
{\r
  UINT32 Index;\r
  UINT8* TimerPtr;\r
\r
  if (!Trace) {\r
    return;\r
  }\r
\r
  ParseAcpi (\r
    TRUE,\r
    0,\r
    "GTDT",\r
    Ptr,\r
    AcpiTableLength,\r
    PARSER_PARAMS (GtdtParser)\r
    );\r
\r
  if (*GtdtPlatformTimerCount != 0) {\r
    TimerPtr = Ptr + (*GtdtPlatformTimerOffset);\r
    Index = 0;\r
    do {\r
      // Parse the Platform Timer Header\r
      ParseAcpi (\r
        FALSE,\r
        0,\r
        NULL,\r
        TimerPtr,\r
        4,  // GT Platform Timer structure header length.\r
        PARSER_PARAMS (GtPlatformTimerHeaderParser)\r
        );\r
      switch (*PlatformTimerType) {\r
        case EFI_ACPI_6_2_GTDT_GT_BLOCK:\r
          DumpGTBlock (TimerPtr, *PlatformTimerLength);\r
          break;\r
        case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG:\r
          DumpWatchdogTimer (TimerPtr, *PlatformTimerLength);\r
          break;\r
        default:\r
          IncrementErrorCount ();\r
          Print (\r
            L"ERROR: INVALID Platform Timer Type = %d\n",\r
            *PlatformTimerType\r
            );\r
          break;\r
      } // switch\r
      TimerPtr += (*PlatformTimerLength);\r
      Index++;\r
    } while (Index < *GtdtPlatformTimerCount);\r
  }\r
}\r
Commit	Line	Data
ee4dc24f RN	1	/**\r
	2	GTDT table parser\r
	3	\r
	4	Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.\r
	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	@par Reference(s):\r
	14	- ACPI 6.2 Specification - Errata A, September 2017\r
	15	**/\r
	16	\r
	17	#include <IndustryStandard/Acpi.h>\r
	18	#include <Library/UefiLib.h>\r
	19	#include "AcpiParser.h"\r
	20	#include "AcpiTableParser.h"\r
	21	\r
	22	// Local variables\r
	23	STATIC CONST UINT32* GtdtPlatformTimerCount;\r
	24	STATIC CONST UINT32* GtdtPlatformTimerOffset;\r
	25	STATIC CONST UINT8* PlatformTimerType;\r
	26	STATIC CONST UINT16* PlatformTimerLength;\r
	27	STATIC CONST UINT32* GtBlockTimerCount;\r
	28	STATIC CONST UINT32* GtBlockTimerOffset;\r
	29	STATIC CONST UINT16* GtBlockLength;\r
	30	STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;\r
	31	\r
	32	/** This function validates the GT Block timer count.\r
	33	\r
	34	@param [in] Ptr Pointer to the start of the field data.\r
	35	@param [in] Context Pointer to context specific information e.g. this\r
	36	could be a pointer to the ACPI table header.\r
	37	*/\r
	38	STATIC\r
	39	VOID\r
	40	EFIAPI\r
	41	ValidateGtBlockTimerCount (\r
	42	IN UINT8* Ptr,\r
	43	IN VOID* Context\r
	44	);\r
	45	\r
	46	/** An ACPI_PARSER array describing the ACPI GTDT Table.\r
	47	*/\r
	48	STATIC CONST ACPI_PARSER GtdtParser[] = {\r
	49	PARSE_ACPI_HEADER (&AcpiHdrInfo),\r
	50	{L"CntControlBase Physical Address", 8, 36, L"0x%lx", NULL, NULL,\r
	51	NULL, NULL},\r
	52	{L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},\r
	53	{L"Secure EL1 timer GSIV", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},\r
	54	{L"Secure EL1 timer FLAGS", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},\r
	55	\r
	56	{L"Non-Secure EL1 timer GSIV", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},\r
	57	{L"Non-Secure EL1 timer FLAGS", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},\r
	58	\r
	59	{L"Virtual timer GSIV", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},\r
	60	{L"Virtual timer FLAGS", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},\r
	61	\r
	62	{L"Non-Secure EL2 timer GSIV", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},\r
	63	{L"Non-Secure EL2 timer FLAGS", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},\r
	64	\r
65	{L"CntReadBase Physical address", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL},\r
66	{L"Platform Timer Count", 4, 88, L"%d", NULL,\r
67	(VOID**)&GtdtPlatformTimerCount, NULL, NULL},\r
68	{L"Platform Timer Offset", 4, 92, L"0x%x", NULL,\r
69	(VOID**)&GtdtPlatformTimerOffset, NULL, NULL}\r
70	};\r
71	\r
72	/** An ACPI_PARSER array describing the Platform timer header.\r
73	*/\r
74	STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser[] = {\r
75	{L"Type", 1, 0, NULL, NULL, (VOID**)&PlatformTimerType, NULL, NULL},\r
76	{L"Length", 2, 1, NULL, NULL, (VOID**)&PlatformTimerLength, NULL, NULL},\r
77	{L"Reserved", 1, 3, NULL, NULL, NULL, NULL, NULL}\r
78	};\r
79	\r
80	/** An ACPI_PARSER array describing the Platform GT Block.\r
81	*/\r
82	STATIC CONST ACPI_PARSER GtBlockParser[] = {\r
83	{L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
84	{L"Length", 2, 1, L"%d", NULL, (VOID**)&GtBlockLength, NULL, NULL},\r
85	{L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
86	{L"Physical address (CntCtlBase)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
87	{L"Timer Count", 4, 12, L"%d", NULL, (VOID**)&GtBlockTimerCount,\r
88	ValidateGtBlockTimerCount, NULL},\r
89	{L"Timer Offset", 4, 16, L"%d", NULL, (VOID**)&GtBlockTimerOffset, NULL,\r
90	NULL}\r
91	};\r
92	\r
93	/** An ACPI_PARSER array describing the GT Block timer.\r
94	*/\r
95	STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {\r
96	{L"Frame Number", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
97	{L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},\r
98	{L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
99	{L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,\r
100	NULL},\r
101	{L"Physical Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
102	{L"Physical Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},\r
103	{L"Virtual Timer GSIV", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},\r
104	{L"Virtual Timer Flags", 4, 32, L"0x%x", NULL, NULL, NULL, NULL},\r
105	{L"Common Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL}\r
106	};\r
107	\r
108	/** An ACPI_PARSER array describing the Platform Watchdog.\r
109	*/\r
110	STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser[] = {\r
111	{L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
112	{L"Length", 2, 1, L"%d", NULL, NULL, NULL, NULL},\r
113	{L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
114	{L"RefreshFrame Physical address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
115	{L"ControlFrame Physical address", 8, 12, L"0x%lx", NULL, NULL, NULL, NULL},\r
116	{L"Watchdog Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
117	{L"Watchdog Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL}\r
118	};\r
119	\r
120	/** This function validates the GT Block timer count.\r
121	\r
122	@param [in] Ptr Pointer to the start of the field data.\r
123	@param [in] Context Pointer to context specific information e.g. this\r
124	could be a pointer to the ACPI table header.\r
125	*/\r
126	STATIC\r
127	VOID\r
128	EFIAPI\r
129	ValidateGtBlockTimerCount (\r
130	IN UINT8* Ptr,\r
131	IN VOID* Context\r
132	)\r
133	{\r
134	UINT32 BlockTimerCount = (UINT32)Ptr;\r
135	if (BlockTimerCount > 8) {\r
136	IncrementErrorCount ();\r
137	Print (\r
138	L"\nERROR: Timer Count = %d. Max Timer Count is 8.",\r
139	BlockTimerCount\r
140	);\r
141	}\r
142	}\r
143	\r
144	/** This function parses the Platform GT Block.\r
145	\r
146	@param [in] Ptr Pointer to the start of the GT Block data.\r
147	@param [in] Length Length of the GT Block structure.\r
148	*/\r
149	STATIC\r
150	VOID\r
151	DumpGTBlock (\r
152	IN UINT8* Ptr,\r
153	IN UINT16 Length\r
154	)\r
155	{\r
156	UINT32 Index;\r
157	UINT32 Offset;\r
158	UINT16 GTBlockTimerLength;\r
159	\r
160	Offset = ParseAcpi (\r
161	TRUE,\r
162	2,\r
163	"GT Block",\r
164	Ptr,\r
165	Length,\r
166	PARSER_PARAMS (GtBlockParser)\r
167	);\r
168	GTBlockTimerLength = (GtBlockLength - Offset) / (GtBlockTimerCount);\r
169	Length -= Offset;\r
170	\r
171	if (*GtBlockTimerCount != 0) {\r
172	Ptr += (*GtBlockTimerOffset);\r
173	Index = 0;\r
174	while ((Index < (*GtBlockTimerCount)) && (Length >= GTBlockTimerLength)) {\r
175	Offset = ParseAcpi (\r
176	TRUE,\r
177	2,\r
178	"GT Block Timer",\r
179	Ptr,\r
180	GTBlockTimerLength,\r
181	PARSER_PARAMS (GtBlockTimerParser)\r
182	);\r
183	// Increment by GT Block Timer structure size\r
184	Ptr += Offset;\r
185	Length -= Offset;\r
186	Index++;\r
187	}\r
188	\r
189	if (Length != 0) {\r
190	IncrementErrorCount ();\r
191	Print (\r
192	L"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",\r
193	Length\r
194	);\r
195	}\r
196	}\r
197	}\r
198	\r
199	/** This function parses the Platform Watchdog timer.\r
200	\r
201	@param [in] Ptr Pointer to the start of the watchdog timer data.\r
202	@param [in] Length Length of the watchdog timer structure.\r
203	*/\r
204	STATIC\r
205	VOID\r
206	DumpWatchdogTimer (\r
207	IN UINT8* Ptr,\r
208	IN UINT16 Length\r
209	)\r
210	{\r
211	ParseAcpi (\r
212	TRUE,\r
213	2,\r
214	"SBSA Generic Watchdog",\r
215	Ptr,\r
216	Length,\r
217	PARSER_PARAMS (SBSAGenericWatchdogParser)\r
218	);\r
219	}\r
220	\r
221	/** This function parses the ACPI GTDT table.\r
222	When trace is enabled this function parses the GTDT table and\r
223	traces the ACPI table fields.\r
224	\r
225	This function also parses the following platform timer structures:\r
226	- GT Block timer\r
227	- Watchdog timer\r
228	\r
229	This function also performs validation of the ACPI table fields.\r
230	\r
231	@param [in] Trace If TRUE, trace the ACPI fields.\r
232	@param [in] Ptr Pointer to the start of the buffer.\r
233	@param [in] AcpiTableLength Length of the ACPI table.\r
234	@param [in] AcpiTableRevision Revision of the ACPI table.\r
235	*/\r
236	VOID\r
237	EFIAPI\r
238	ParseAcpiGtdt (\r
239	IN BOOLEAN Trace,\r
240	IN UINT8* Ptr,\r
241	IN UINT32 AcpiTableLength,\r
242	IN UINT8 AcpiTableRevision\r
243	)\r
244	{\r
245	UINT32 Index;\r
246	UINT8* TimerPtr;\r
247	\r
248	if (!Trace) {\r
249	return;\r
250	}\r
251	\r
252	ParseAcpi (\r
253	TRUE,\r
254	0,\r
255	"GTDT",\r
256	Ptr,\r
257	AcpiTableLength,\r
258	PARSER_PARAMS (GtdtParser)\r
259	);\r
260	\r
261	if (*GtdtPlatformTimerCount != 0) {\r
262	TimerPtr = Ptr + (*GtdtPlatformTimerOffset);\r
263	Index = 0;\r
264	do {\r
265	// Parse the Platform Timer Header\r
266	ParseAcpi (\r
267	FALSE,\r
268	0,\r
269	NULL,\r
270	TimerPtr,\r
271	4, // GT Platform Timer structure header length.\r
272	PARSER_PARAMS (GtPlatformTimerHeaderParser)\r
273	);\r
274	switch (*PlatformTimerType) {\r
275	case EFI_ACPI_6_2_GTDT_GT_BLOCK:\r
276	DumpGTBlock (TimerPtr, *PlatformTimerLength);\r
277	break;\r
278	case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG:\r
279	DumpWatchdogTimer (TimerPtr, *PlatformTimerLength);\r
280	break;\r
281	default:\r
282	IncrementErrorCount ();\r
283	Print (\r
284	L"ERROR: INVALID Platform Timer Type = %d\n",\r
285	*PlatformTimerType\r
286	);\r
287	break;\r
288	} // switch\r
289	TimerPtr += (*PlatformTimerLength);\r
290	Index++;\r
291	} while (Index < *GtdtPlatformTimerCount);\r
292	}\r
293	}\r