2 Utility functions used by the Dp application.
4 Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.
5 (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include <Library/BaseLib.h>
16 #include <Library/BaseMemoryLib.h>
17 #include <Library/MemoryAllocationLib.h>
18 #include <Library/DebugLib.h>
19 #include <Library/UefiBootServicesTableLib.h>
20 #include <Library/TimerLib.h>
21 #include <Library/PeCoffGetEntryPointLib.h>
22 #include <Library/PrintLib.h>
23 #include <Library/HiiLib.h>
24 #include <Library/PcdLib.h>
25 #include <Library/UefiLib.h>
26 #include <Library/DevicePathLib.h>
27 #include <Library/HandleParsingLib.h>
29 #include <Pi/PiFirmwareFile.h>
30 #include <Library/DxeServicesLib.h>
32 #include <Protocol/LoadedImage.h>
33 #include <Protocol/DriverBinding.h>
34 #include <Protocol/ComponentName2.h>
35 #include <Protocol/DevicePath.h>
37 #include <Guid/Performance.h>
41 #include "DpInternal.h"
44 Calculate an event's duration in timer ticks.
46 Given the count direction and the event's start and end timer values,
47 calculate the duration of the event in timer ticks. Information for
48 the current measurement is pointed to by the parameter.
50 If the measurement's start time is 1, it indicates that the developer
51 is indicating that the measurement began at the release of reset.
52 The start time is adjusted to the timer's starting count before performing
53 the elapsed time calculation.
55 The calculated duration, in ticks, is the absolute difference between
56 the measurement's ending and starting counts.
58 @param Measurement Pointer to a MEASUREMENT_RECORD structure containing
59 data for the current measurement.
61 @return The 64-bit duration of the event.
65 IN OUT MEASUREMENT_RECORD
*Measurement
71 // PERF_START macros are called with a value of 1 to indicate
72 // the beginning of time. So, adjust the start ticker value
73 // to the real beginning of time.
74 // Assumes no wraparound. Even then, there is a very low probability
75 // of having a valid StartTicker value of 1.
76 if (Measurement
->StartTimeStamp
== 1) {
77 Measurement
->StartTimeStamp
= TimerInfo
.StartCount
;
79 if (TimerInfo
.CountUp
) {
80 Duration
= Measurement
->EndTimeStamp
- Measurement
->StartTimeStamp
;
81 Error
= (BOOLEAN
)(Duration
> Measurement
->EndTimeStamp
);
84 Duration
= Measurement
->StartTimeStamp
- Measurement
->EndTimeStamp
;
85 Error
= (BOOLEAN
)(Duration
> Measurement
->StartTimeStamp
);
89 DEBUG ((EFI_D_ERROR
, ALit_TimerLibError
));
96 Determine whether the Measurement record is for an EFI Phase.
98 The Token and Module members of the measurement record are checked.
99 Module must be empty and Token must be one of SEC, PEI, DXE, BDS, or SHELL.
101 @param[in] Measurement A pointer to the Measurement record to test.
103 @retval TRUE The measurement record is for an EFI Phase.
104 @retval FALSE The measurement record is NOT for an EFI Phase.
108 IN MEASUREMENT_RECORD
*Measurement
113 RetVal
= (BOOLEAN
)( ( *Measurement
->Module
== '\0') &&
114 ((AsciiStrnCmp (Measurement
->Token
, ALit_SEC
, PERF_TOKEN_LENGTH
) == 0) ||
115 (AsciiStrnCmp (Measurement
->Token
, ALit_PEI
, PERF_TOKEN_LENGTH
) == 0) ||
116 (AsciiStrnCmp (Measurement
->Token
, ALit_DXE
, PERF_TOKEN_LENGTH
) == 0) ||
117 (AsciiStrnCmp (Measurement
->Token
, ALit_BDS
, PERF_TOKEN_LENGTH
) == 0))
123 Get the file name portion of the Pdb File Name.
125 The portion of the Pdb File Name between the last backslash and
126 either a following period or the end of the string is converted
127 to Unicode and copied into UnicodeBuffer. The name is truncated,
128 if necessary, to ensure that UnicodeBuffer is not overrun.
130 @param[in] PdbFileName Pdb file name.
131 @param[out] UnicodeBuffer The resultant Unicode File Name.
135 DpGetShortPdbFileName (
136 IN CHAR8
*PdbFileName
,
137 OUT CHAR16
*UnicodeBuffer
140 UINTN IndexA
; // Current work location within an ASCII string.
141 UINTN IndexU
; // Current work location within a Unicode string.
145 ZeroMem (UnicodeBuffer
, (DP_GAUGE_STRING_LENGTH
+ 1) * sizeof (CHAR16
));
147 if (PdbFileName
== NULL
) {
148 StrnCpyS (UnicodeBuffer
, DP_GAUGE_STRING_LENGTH
+ 1, L
" ", 1);
151 for (EndIndex
= 0; PdbFileName
[EndIndex
] != 0; EndIndex
++)
153 for (IndexA
= 0; PdbFileName
[IndexA
] != 0; IndexA
++) {
154 if (PdbFileName
[IndexA
] == '\\') {
155 StartIndex
= IndexA
+ 1;
158 if (PdbFileName
[IndexA
] == '.') {
164 for (IndexA
= StartIndex
; IndexA
< EndIndex
; IndexA
++) {
165 UnicodeBuffer
[IndexU
] = (CHAR16
) PdbFileName
[IndexA
];
167 if (IndexU
>= DP_GAUGE_STRING_LENGTH
) {
168 UnicodeBuffer
[DP_GAUGE_STRING_LENGTH
] = 0;
176 Get a human readable name for an image handle.
177 The following methods will be tried orderly:
179 2. ComponentName2 protocol
183 6. Unknown Driver Name
187 @post The resulting Unicode name string is stored in the
188 mGaugeString global array.
192 DpGetNameFromHandle (
197 EFI_LOADED_IMAGE_PROTOCOL
*Image
;
199 EFI_DRIVER_BINDING_PROTOCOL
*DriverBinding
;
200 EFI_STRING StringPtr
;
201 EFI_DEVICE_PATH_PROTOCOL
*LoadedImageDevicePath
;
202 EFI_DEVICE_PATH_PROTOCOL
*DevicePath
;
206 CHAR8
*PlatformLanguage
;
207 EFI_COMPONENT_NAME2_PROTOCOL
*ComponentName2
;
210 LoadedImageDevicePath
= NULL
;
214 // Method 1: Get the name string from image PDB
216 Status
= gBS
->HandleProtocol (
218 &gEfiLoadedImageProtocolGuid
,
222 if (EFI_ERROR (Status
)) {
223 Status
= gBS
->OpenProtocol (
225 &gEfiDriverBindingProtocolGuid
,
226 (VOID
**) &DriverBinding
,
229 EFI_OPEN_PROTOCOL_GET_PROTOCOL
231 if (!EFI_ERROR (Status
)) {
232 Status
= gBS
->HandleProtocol (
233 DriverBinding
->ImageHandle
,
234 &gEfiLoadedImageProtocolGuid
,
240 if (!EFI_ERROR (Status
)) {
241 PdbFileName
= PeCoffLoaderGetPdbPointer (Image
->ImageBase
);
243 if (PdbFileName
!= NULL
) {
244 DpGetShortPdbFileName (PdbFileName
, mGaugeString
);
250 // Method 2: Get the name string from ComponentName2 protocol
252 Status
= gBS
->HandleProtocol (
254 &gEfiComponentName2ProtocolGuid
,
255 (VOID
**) &ComponentName2
257 if (!EFI_ERROR (Status
)) {
259 // Get the current platform language setting
261 PlatformLanguage
= GetBestLanguageForDriver(ComponentName2
->SupportedLanguages
, NULL
, FALSE
);
262 Status
= ComponentName2
->GetDriverName (
264 PlatformLanguage
!= NULL
? PlatformLanguage
: "en-US",
267 if (!EFI_ERROR (Status
)) {
268 SHELL_FREE_NON_NULL (PlatformLanguage
);
269 StrnCpyS (mGaugeString
, DP_GAUGE_STRING_LENGTH
+ 1, StringPtr
, DP_GAUGE_STRING_LENGTH
);
270 mGaugeString
[DP_GAUGE_STRING_LENGTH
] = 0;
275 Status
= gBS
->HandleProtocol (
277 &gEfiLoadedImageDevicePathProtocolGuid
,
278 (VOID
**) &LoadedImageDevicePath
280 if (!EFI_ERROR (Status
) && (LoadedImageDevicePath
!= NULL
)) {
281 DevicePath
= LoadedImageDevicePath
;
282 } else if (Image
!= NULL
) {
283 DevicePath
= Image
->FilePath
;
286 if (DevicePath
!= NULL
) {
288 // Try to get image GUID from image DevicePath
291 while (!IsDevicePathEndType (DevicePath
)) {
292 NameGuid
= EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH
*) DevicePath
);
293 if (NameGuid
!= NULL
) {
296 DevicePath
= NextDevicePathNode (DevicePath
);
299 if (NameGuid
!= NULL
) {
301 // Try to get the image's FFS UI section by image GUID
305 Status
= GetSectionFromAnyFv (
307 EFI_SECTION_USER_INTERFACE
,
309 (VOID
**) &NameString
,
313 if (!EFI_ERROR (Status
)) {
315 // Method 3. Get the name string from FFS UI section
317 StrnCpyS (mGaugeString
, DP_GAUGE_STRING_LENGTH
+ 1, NameString
, DP_GAUGE_STRING_LENGTH
);
318 mGaugeString
[DP_GAUGE_STRING_LENGTH
] = 0;
319 FreePool (NameString
);
322 // Method 4: Get the name string from image GUID
324 UnicodeSPrint (mGaugeString
, sizeof (mGaugeString
), L
"%g", NameGuid
);
329 // Method 5: Get the name string from image DevicePath
331 NameString
= ConvertDevicePathToText (DevicePath
, TRUE
, FALSE
);
332 if (NameString
!= NULL
) {
333 StrnCpyS (mGaugeString
, DP_GAUGE_STRING_LENGTH
+ 1, NameString
, DP_GAUGE_STRING_LENGTH
);
334 mGaugeString
[DP_GAUGE_STRING_LENGTH
] = 0;
335 FreePool (NameString
);
342 // Method 6: Unknown Driver Name
344 StringPtr
= HiiGetString (gDpHiiHandle
, STRING_TOKEN (STR_DP_ERROR_NAME
), NULL
);
345 ASSERT (StringPtr
!= NULL
);
346 StrnCpyS (mGaugeString
, DP_GAUGE_STRING_LENGTH
+ 1, StringPtr
, DP_GAUGE_STRING_LENGTH
);
347 FreePool (StringPtr
);
351 Calculate the Duration in microseconds.
353 Duration is multiplied by 1000, instead of Frequency being divided by 1000 or
354 multiplying the result by 1000, in order to maintain precision. Since Duration is
355 a 64-bit value, multiplying it by 1000 is unlikely to produce an overflow.
357 The time is calculated as (Duration * 1000) / Timer_Frequency.
359 @param[in] Duration The event duration in timer ticks.
361 @return A 64-bit value which is the Elapsed time in microseconds.
364 DurationInMicroSeconds (
370 Temp
= MultU64x32 (Duration
, 1000);
371 return DivU64x32 (Temp
, TimerInfo
.Frequency
);
375 Get index of Measurement Record's match in the CumData array.
377 If the Measurement's Token value matches a Token in one of the CumData
378 records, the index of the matching record is returned. The returned
379 index is a signed value so that negative values can indicate that
380 the Measurement didn't match any entry in the CumData array.
382 @param[in] Measurement A pointer to a Measurement Record to match against the CumData array.
384 @retval <0 Token is not in the CumData array.
385 @retval >=0 Return value is the index into CumData where Token is found.
389 IN MEASUREMENT_RECORD
*Measurement
394 for( Index
= 0; Index
< (INTN
)NumCum
; ++Index
) {
395 if (AsciiStrnCmp (Measurement
->Token
, CumData
[Index
].Name
, PERF_TOKEN_LENGTH
) == 0) {
396 return Index
; // Exit, we found a match
399 // If the for loop exits, Token was not found.
400 return -1; // Indicate failure