[mirror_edk2.git] / OvmfPkg / Library / PlatformDebugLibIoPort / DebugLib.c

/** @file\r
  Base Debug library instance for QEMU debug port.\r
  It uses PrintLib to send debug messages to a fixed I/O port.\r
\r
  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
  Copyright (c) 2012, Red Hat, Inc.<BR>\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
**/\r
\r
#include <Base.h>\r
#include <Library/DebugLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/PrintLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DebugPrintErrorLevelLib.h>\r
#include "DebugLibDetect.h"\r
\r
//\r
// Define the maximum debug and assert message length that this library supports\r
//\r
#define MAX_DEBUG_MESSAGE_LENGTH  0x100\r
\r
/**\r
  Prints a debug message to the debug output device if the specified error level is enabled.\r
\r
  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r
  GetDebugPrintErrorLevel (), then print the message specified by Format and the\r
  associated variable argument list to the debug output device.\r
\r
  If Format is NULL, then ASSERT().\r
\r
  @param  ErrorLevel  The error level of the debug message.\r
  @param  Format      Format string for the debug message to print.\r
  @param  ...         Variable argument list whose contents are accessed\r
                      based on the format string specified by Format.\r
\r
**/\r
VOID\r
EFIAPI\r
DebugPrint (\r
  IN  UINTN        ErrorLevel,\r
  IN  CONST CHAR8  *Format,\r
  ...\r
  )\r
{\r
  CHAR8    Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r
  VA_LIST  Marker;\r
  UINTN    Length;\r
\r
  //\r
  // If Format is NULL, then ASSERT().\r
  //\r
  ASSERT (Format != NULL);\r
\r
  //\r
  // Check if the global mask disables this message or the device is inactive\r
  //\r
  if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0 ||\r
      !PlatformDebugLibIoPortFound ()) {\r
    return;\r
  }\r
\r
  //\r
  // Convert the DEBUG() message to an ASCII String\r
  //\r
  VA_START (Marker, Format);\r
  Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);\r
  VA_END (Marker);\r
\r
  //\r
  // Send the print string to the debug I/O port\r
  //\r
  IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);\r
}\r
\r
\r
/**\r
  Prints an assert message containing a filename, line number, and description.\r
  This may be followed by a breakpoint or a dead loop.\r
\r
  Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"\r
  to the debug output device.  If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of\r
  PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if\r
  DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then\r
  CpuDeadLoop() is called.  If neither of these bits are set, then this function\r
  returns immediately after the message is printed to the debug output device.\r
  DebugAssert() must actively prevent recursion.  If DebugAssert() is called while\r
  processing another DebugAssert(), then DebugAssert() must return immediately.\r
\r
  If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.\r
  If Description is NULL, then a <Description> string of "(NULL) Description" is printed.\r
\r
  @param  FileName     The pointer to the name of the source file that generated the assert condition.\r
  @param  LineNumber   The line number in the source file that generated the assert condition\r
  @param  Description  The pointer to the description of the assert condition.\r
\r
**/\r
VOID\r
EFIAPI\r
DebugAssert (\r
  IN CONST CHAR8  *FileName,\r
  IN UINTN        LineNumber,\r
  IN CONST CHAR8  *Description\r
  )\r
{\r
  CHAR8  Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r
  UINTN  Length;\r
\r
  //\r
  // Generate the ASSERT() message in Ascii format\r
  //\r
  Length = AsciiSPrint (Buffer, sizeof Buffer, "ASSERT %a(%Lu): %a\n",\r
             FileName, (UINT64)LineNumber, Description);\r
\r
  //\r
  // Send the print string to the debug I/O port, if present\r
  //\r
  if (PlatformDebugLibIoPortFound ()) {\r
    IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);\r
  }\r
\r
  //\r
  // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings\r
  //\r
  if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r
    CpuBreakpoint ();\r
  } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r
    CpuDeadLoop ();\r
  }\r
}\r
\r
\r
/**\r
  Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.\r
\r
  This function fills Length bytes of Buffer with the value specified by\r
  PcdDebugClearMemoryValue, and returns Buffer.\r
\r
  If Buffer is NULL, then ASSERT().\r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
  @param   Buffer  The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.\r
  @param   Length  The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.\r
\r
  @return  Buffer  The pointer to the target buffer filled with PcdDebugClearMemoryValue.\r
\r
**/\r
VOID *\r
EFIAPI\r
DebugClearMemory (\r
  OUT VOID  *Buffer,\r
  IN UINTN  Length\r
  )\r
{\r
  //\r
  // If Buffer is NULL, then ASSERT().\r
  //\r
  ASSERT (Buffer != NULL);\r
\r
  //\r
  // SetMem() checks for the the ASSERT() condition on Length and returns Buffer\r
  //\r
  return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));\r
}\r
\r
\r
/**\r
  Returns TRUE if ASSERT() macros are enabled.\r
\r
  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of\r
  PcdDebugProperyMask is set.  Otherwise FALSE is returned.\r
\r
  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.\r
  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
DebugAssertEnabled (\r
  VOID\r
  )\r
{\r
  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);\r
}\r
\r
\r
/**\r
  Returns TRUE if DEBUG() macros are enabled.\r
\r
  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of\r
  PcdDebugProperyMask is set.  Otherwise FALSE is returned.\r
\r
  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.\r
  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
DebugPrintEnabled (\r
  VOID\r
  )\r
{\r
  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);\r
}\r
\r
\r
/**\r
  Returns TRUE if DEBUG_CODE() macros are enabled.\r
\r
  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of\r
  PcdDebugProperyMask is set.  Otherwise FALSE is returned.\r
\r
  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.\r
  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
DebugCodeEnabled (\r
  VOID\r
  )\r
{\r
  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);\r
}\r
\r
\r
/**\r
  Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.\r
\r
  This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of\r
  PcdDebugProperyMask is set.  Otherwise FALSE is returned.\r
\r
  @retval  TRUE    The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.\r
  @retval  FALSE   The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
DebugClearMemoryEnabled (\r
  VOID\r
  )\r
{\r
  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);\r
}\r
\r
/**\r
  Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.\r
\r
  This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.\r
\r
  @retval  TRUE    Current ErrorLevel is supported.\r
  @retval  FALSE   Current ErrorLevel is not supported.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
DebugPrintLevelEnabled (\r
  IN  CONST UINTN        ErrorLevel\r
  )\r
{\r
  return (BOOLEAN) ((ErrorLevel & PcdGet32(PcdFixedDebugPrintErrorLevel)) != 0);\r
}\r
\r
/**\r
  Return the result of detecting the debug I/O port device.\r
\r
  @retval TRUE   if the debug I/O port device was detected.\r
  @retval FALSE  otherwise\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
PlatformDebugLibIoPortDetect (\r
  VOID\r
  )\r
{\r
  return IoRead8 (PcdGet16 (PcdDebugIoPort)) == BOCHS_DEBUG_PORT_MAGIC;\r
}\r
Commit	Line	Data
b90aefa9	1	/** @file\r
	2	Base Debug library instance for QEMU debug port.\r
	3	It uses PrintLib to send debug messages to a fixed I/O port.\r
	4	\r
5e795f93	5	Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
b90aefa9	6	Copyright (c) 2012, Red Hat, Inc.<BR>\r
	7	This program and the accompanying materials\r
	8	are licensed and made available under the terms and conditions of the BSD License\r
	9	which accompanies this distribution. The full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php.\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
	15	**/\r
	16	\r
	17	#include <Base.h>\r
b90aefa9	18	#include <Library/DebugLib.h>\r
	19	#include <Library/BaseLib.h>\r
	20	#include <Library/IoLib.h>\r
	21	#include <Library/PrintLib.h>\r
	22	#include <Library/PcdLib.h>\r
	23	#include <Library/BaseMemoryLib.h>\r
	24	#include <Library/DebugPrintErrorLevelLib.h>\r
c09d9571	25	#include "DebugLibDetect.h"\r
b90aefa9	26	\r
	27	//\r
	28	// Define the maximum debug and assert message length that this library supports\r
	29	//\r
	30	#define MAX_DEBUG_MESSAGE_LENGTH 0x100\r
	31	\r
b90aefa9	32	/**\r
	33	Prints a debug message to the debug output device if the specified error level is enabled.\r
	34	\r
	35	If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r
	36	GetDebugPrintErrorLevel (), then print the message specified by Format and the\r
	37	associated variable argument list to the debug output device.\r
	38	\r
	39	If Format is NULL, then ASSERT().\r
	40	\r
	41	@param ErrorLevel The error level of the debug message.\r
	42	@param Format Format string for the debug message to print.\r
	43	@param ... Variable argument list whose contents are accessed\r
	44	based on the format string specified by Format.\r
	45	\r
	46	**/\r
	47	VOID\r
	48	EFIAPI\r
	49	DebugPrint (\r
	50	IN UINTN ErrorLevel,\r
	51	IN CONST CHAR8 *Format,\r
	52	...\r
	53	)\r
	54	{\r
	55	CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r
	56	VA_LIST Marker;\r
80886a69	57	UINTN Length;\r
b90aefa9	58	\r
	59	//\r
	60	// If Format is NULL, then ASSERT().\r
	61	//\r
	62	ASSERT (Format != NULL);\r
	63	\r
	64	//\r
c09d9571	65	// Check if the global mask disables this message or the device is inactive\r
b90aefa9	66	//\r
c09d9571 PB	67	if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0 \|\|\r
c09d9571 PB	68	!PlatformDebugLibIoPortFound ()) {\r
b90aefa9	69	return;\r
	70	}\r
	71	\r
	72	//\r
	73	// Convert the DEBUG() message to an ASCII String\r
	74	//\r
	75	VA_START (Marker, Format);\r
80886a69	76	Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);\r
b90aefa9	77	VA_END (Marker);\r
	78	\r
	79	//\r
	80	// Send the print string to the debug I/O port\r
	81	//\r
80886a69	82	IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);\r
b90aefa9	83	}\r
	84	\r
	85	\r
	86	/**\r
	87	Prints an assert message containing a filename, line number, and description.\r
	88	This may be followed by a breakpoint or a dead loop.\r
	89	\r
	90	Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"\r
	91	to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of\r
	92	PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if\r
	93	DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then\r
	94	CpuDeadLoop() is called. If neither of these bits are set, then this function\r
	95	returns immediately after the message is printed to the debug output device.\r
	96	DebugAssert() must actively prevent recursion. If DebugAssert() is called while\r
	97	processing another DebugAssert(), then DebugAssert() must return immediately.\r
	98	\r
	99	If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.\r
	100	If Description is NULL, then a <Description> string of "(NULL) Description" is printed.\r
	101	\r
	102	@param FileName The pointer to the name of the source file that generated the assert condition.\r
	103	@param LineNumber The line number in the source file that generated the assert condition\r
	104	@param Description The pointer to the description of the assert condition.\r
	105	\r
	106	**/\r
	107	VOID\r
	108	EFIAPI\r
	109	DebugAssert (\r
	110	IN CONST CHAR8 *FileName,\r
	111	IN UINTN LineNumber,\r
	112	IN CONST CHAR8 *Description\r
	113	)\r
	114	{\r
	115	CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r
80886a69	116	UINTN Length;\r
b90aefa9	117	\r
	118	//\r
	119	// Generate the ASSERT() message in Ascii format\r
	120	//\r
80886a69 LE	121	Length = AsciiSPrint (Buffer, sizeof Buffer, "ASSERT %a(%Lu): %a\n",\r
80886a69 LE	122	FileName, (UINT64)LineNumber, Description);\r
b90aefa9	123	\r
b90aefa9	124	//\r
c09d9571	125	// Send the print string to the debug I/O port, if present\r
b90aefa9	126	//\r
c09d9571 PB	127	if (PlatformDebugLibIoPortFound ()) {\r
	128	IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);\r
	129	}\r
b90aefa9	130	\r
	131	//\r
	132	// Generate a Breakpoint, DeadLoop, or NOP based on PCD settings\r
	133	//\r
	134	if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r
	135	CpuBreakpoint ();\r
	136	} else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r
	137	CpuDeadLoop ();\r
	138	}\r
	139	}\r
	140	\r
	141	\r
	142	/**\r
	143	Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.\r
	144	\r
	145	This function fills Length bytes of Buffer with the value specified by\r
	146	PcdDebugClearMemoryValue, and returns Buffer.\r
	147	\r
	148	If Buffer is NULL, then ASSERT().\r
	149	If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
	150	\r
	151	@param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.\r
	152	@param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.\r
	153	\r
	154	@return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue.\r
	155	\r
	156	**/\r
	157	VOID *\r
	158	EFIAPI\r
	159	DebugClearMemory (\r
	160	OUT VOID *Buffer,\r
	161	IN UINTN Length\r
	162	)\r
	163	{\r
	164	//\r
	165	// If Buffer is NULL, then ASSERT().\r
	166	//\r
	167	ASSERT (Buffer != NULL);\r
	168	\r
	169	//\r
	170	// SetMem() checks for the the ASSERT() condition on Length and returns Buffer\r
	171	//\r
	172	return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));\r
	173	}\r
	174	\r
	175	\r
	176	/**\r
	177	Returns TRUE if ASSERT() macros are enabled.\r
	178	\r
	179	This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of\r
	180	PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
	181	\r
	182	@retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.\r
	183	@retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.\r
	184	\r
	185	**/\r
	186	BOOLEAN\r
	187	EFIAPI\r
	188	DebugAssertEnabled (\r
	189	VOID\r
	190	)\r
	191	{\r
	192	return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);\r
	193	}\r
194	\r
195	\r
196	/**\r
197	Returns TRUE if DEBUG() macros are enabled.\r
198	\r
199	This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of\r
200	PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
201	\r
202	@retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.\r
203	@retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.\r
204	\r
205	**/\r
206	BOOLEAN\r
207	EFIAPI\r
208	DebugPrintEnabled (\r
209	VOID\r
210	)\r
211	{\r
212	return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);\r
213	}\r
214	\r
215	\r
216	/**\r
217	Returns TRUE if DEBUG_CODE() macros are enabled.\r
218	\r
219	This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of\r
220	PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
221	\r
222	@retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.\r
223	@retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.\r
224	\r
225	**/\r
226	BOOLEAN\r
227	EFIAPI\r
228	DebugCodeEnabled (\r
229	VOID\r
230	)\r
231	{\r
232	return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);\r
233	}\r
234	\r
235	\r
236	/**\r
237	Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.\r
238	\r
239	This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of\r
240	PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
241	\r
242	@retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.\r
243	@retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.\r
244	\r
245	**/\r
246	BOOLEAN\r
247	EFIAPI\r
248	DebugClearMemoryEnabled (\r
249	VOID\r
250	)\r
251	{\r
252	return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);\r
253	}\r
254	\r
5e795f93 LG	255	/**\r
	256	Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.\r
	257	\r
	258	This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.\r
	259	\r
	260	@retval TRUE Current ErrorLevel is supported.\r
	261	@retval FALSE Current ErrorLevel is not supported.\r
	262	\r
	263	**/\r
	264	BOOLEAN\r
	265	EFIAPI\r
	266	DebugPrintLevelEnabled (\r
	267	IN CONST UINTN ErrorLevel\r
	268	)\r
	269	{\r
	270	return (BOOLEAN) ((ErrorLevel & PcdGet32(PcdFixedDebugPrintErrorLevel)) != 0);\r
	271	}\r
c09d9571 PB	272	\r
	273	/**\r
	274	Return the result of detecting the debug I/O port device.\r
	275	\r
	276	@retval TRUE if the debug I/O port device was detected.\r
	277	@retval FALSE otherwise\r
	278	\r
	279	**/\r
	280	BOOLEAN\r
	281	EFIAPI\r
	282	PlatformDebugLibIoPortDetect (\r
	283	VOID\r
	284	)\r
	285	{\r
	286	return IoRead8 (PcdGet16 (PcdDebugIoPort)) == BOCHS_DEBUG_PORT_MAGIC;\r
	287	}\r