4 Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14 - ACPI 6.2 Specification - Errata A, September 2017
17 #include <IndustryStandard/Acpi.h>
18 #include <Library/UefiLib.h>
19 #include "AcpiParser.h"
20 #include "AcpiTableParser.h"
23 STATIC CONST UINT32
* GtdtPlatformTimerCount
;
24 STATIC CONST UINT32
* GtdtPlatformTimerOffset
;
25 STATIC CONST UINT8
* PlatformTimerType
;
26 STATIC CONST UINT16
* PlatformTimerLength
;
27 STATIC CONST UINT32
* GtBlockTimerCount
;
28 STATIC CONST UINT32
* GtBlockTimerOffset
;
29 STATIC CONST UINT16
* GtBlockLength
;
30 STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo
;
32 /** This function validates the GT Block timer count.
34 @param [in] Ptr Pointer to the start of the field data.
35 @param [in] Context Pointer to context specific information e.g. this
36 could be a pointer to the ACPI table header.
41 ValidateGtBlockTimerCount (
46 /** An ACPI_PARSER array describing the ACPI GTDT Table.
48 STATIC CONST ACPI_PARSER GtdtParser
[] = {
49 PARSE_ACPI_HEADER (&AcpiHdrInfo
),
50 {L
"CntControlBase Physical Address", 8, 36, L
"0x%lx", NULL
, NULL
,
52 {L
"Reserved", 4, 44, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
53 {L
"Secure EL1 timer GSIV", 4, 48, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
54 {L
"Secure EL1 timer FLAGS", 4, 52, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
56 {L
"Non-Secure EL1 timer GSIV", 4, 56, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
57 {L
"Non-Secure EL1 timer FLAGS", 4, 60, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
59 {L
"Virtual timer GSIV", 4, 64, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
60 {L
"Virtual timer FLAGS", 4, 68, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
62 {L
"Non-Secure EL2 timer GSIV", 4, 72, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
63 {L
"Non-Secure EL2 timer FLAGS", 4, 76, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
65 {L
"CntReadBase Physical address", 8, 80, L
"0x%lx", NULL
, NULL
, NULL
, NULL
},
66 {L
"Platform Timer Count", 4, 88, L
"%d", NULL
,
67 (VOID
**)&GtdtPlatformTimerCount
, NULL
, NULL
},
68 {L
"Platform Timer Offset", 4, 92, L
"0x%x", NULL
,
69 (VOID
**)&GtdtPlatformTimerOffset
, NULL
, NULL
}
72 /** An ACPI_PARSER array describing the Platform timer header.
74 STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser
[] = {
75 {L
"Type", 1, 0, NULL
, NULL
, (VOID
**)&PlatformTimerType
, NULL
, NULL
},
76 {L
"Length", 2, 1, NULL
, NULL
, (VOID
**)&PlatformTimerLength
, NULL
, NULL
},
77 {L
"Reserved", 1, 3, NULL
, NULL
, NULL
, NULL
, NULL
}
80 /** An ACPI_PARSER array describing the Platform GT Block.
82 STATIC CONST ACPI_PARSER GtBlockParser
[] = {
83 {L
"Type", 1, 0, L
"%d", NULL
, NULL
, NULL
, NULL
},
84 {L
"Length", 2, 1, L
"%d", NULL
, (VOID
**)&GtBlockLength
, NULL
, NULL
},
85 {L
"Reserved", 1, 3, L
"%x", NULL
, NULL
, NULL
, NULL
},
86 {L
"Physical address (CntCtlBase)", 8, 4, L
"0x%lx", NULL
, NULL
, NULL
, NULL
},
87 {L
"Timer Count", 4, 12, L
"%d", NULL
, (VOID
**)&GtBlockTimerCount
,
88 ValidateGtBlockTimerCount
, NULL
},
89 {L
"Timer Offset", 4, 16, L
"%d", NULL
, (VOID
**)&GtBlockTimerOffset
, NULL
,
93 /** An ACPI_PARSER array describing the GT Block timer.
95 STATIC CONST ACPI_PARSER GtBlockTimerParser
[] = {
96 {L
"Frame Number", 1, 0, L
"%d", NULL
, NULL
, NULL
, NULL
},
97 {L
"Reserved", 3, 1, L
"%x %x %x", Dump3Chars
, NULL
, NULL
, NULL
},
98 {L
"Physical address (CntBaseX)", 8, 4, L
"0x%lx", NULL
, NULL
, NULL
, NULL
},
99 {L
"Physical address (CntEL0BaseX)", 8, 12, L
"0x%lx", NULL
, NULL
, NULL
,
101 {L
"Physical Timer GSIV", 4, 20, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
102 {L
"Physical Timer Flags", 4, 24, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
103 {L
"Virtual Timer GSIV", 4, 28, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
104 {L
"Virtual Timer Flags", 4, 32, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
105 {L
"Common Flags", 4, 36, L
"0x%x", NULL
, NULL
, NULL
, NULL
}
108 /** An ACPI_PARSER array describing the Platform Watchdog.
110 STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser
[] = {
111 {L
"Type", 1, 0, L
"%d", NULL
, NULL
, NULL
, NULL
},
112 {L
"Length", 2, 1, L
"%d", NULL
, NULL
, NULL
, NULL
},
113 {L
"Reserved", 1, 3, L
"%x", NULL
, NULL
, NULL
, NULL
},
114 {L
"RefreshFrame Physical address", 8, 4, L
"0x%lx", NULL
, NULL
, NULL
, NULL
},
115 {L
"ControlFrame Physical address", 8, 12, L
"0x%lx", NULL
, NULL
, NULL
, NULL
},
116 {L
"Watchdog Timer GSIV", 4, 20, L
"0x%x", NULL
, NULL
, NULL
, NULL
},
117 {L
"Watchdog Timer Flags", 4, 24, L
"0x%x", NULL
, NULL
, NULL
, NULL
}
120 /** This function validates the GT Block timer count.
122 @param [in] Ptr Pointer to the start of the field data.
123 @param [in] Context Pointer to context specific information e.g. this
124 could be a pointer to the ACPI table header.
129 ValidateGtBlockTimerCount (
134 UINT32 BlockTimerCount
= *(UINT32
*)Ptr
;
135 if (BlockTimerCount
> 8) {
136 IncrementErrorCount ();
138 L
"\nERROR: Timer Count = %d. Max Timer Count is 8.",
144 /** This function parses the Platform GT Block.
146 @param [in] Ptr Pointer to the start of the GT Block data.
147 @param [in] Length Length of the GT Block structure.
158 UINT16 GTBlockTimerLength
;
166 PARSER_PARAMS (GtBlockParser
)
168 GTBlockTimerLength
= (*GtBlockLength
- Offset
) / (*GtBlockTimerCount
);
171 if (*GtBlockTimerCount
!= 0) {
172 Ptr
+= (*GtBlockTimerOffset
);
174 while ((Index
< (*GtBlockTimerCount
)) && (Length
>= GTBlockTimerLength
)) {
181 PARSER_PARAMS (GtBlockTimerParser
)
183 // Increment by GT Block Timer structure size
190 IncrementErrorCount ();
192 L
"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",
199 /** This function parses the Platform Watchdog timer.
201 @param [in] Ptr Pointer to the start of the watchdog timer data.
202 @param [in] Length Length of the watchdog timer structure.
214 "SBSA Generic Watchdog",
217 PARSER_PARAMS (SBSAGenericWatchdogParser
)
221 /** This function parses the ACPI GTDT table.
222 When trace is enabled this function parses the GTDT table and
223 traces the ACPI table fields.
225 This function also parses the following platform timer structures:
229 This function also performs validation of the ACPI table fields.
231 @param [in] Trace If TRUE, trace the ACPI fields.
232 @param [in] Ptr Pointer to the start of the buffer.
233 @param [in] AcpiTableLength Length of the ACPI table.
234 @param [in] AcpiTableRevision Revision of the ACPI table.
241 IN UINT32 AcpiTableLength
,
242 IN UINT8 AcpiTableRevision
258 PARSER_PARAMS (GtdtParser
)
261 if (*GtdtPlatformTimerCount
!= 0) {
262 TimerPtr
= Ptr
+ (*GtdtPlatformTimerOffset
);
265 // Parse the Platform Timer Header
271 4, // GT Platform Timer structure header length.
272 PARSER_PARAMS (GtPlatformTimerHeaderParser
)
274 switch (*PlatformTimerType
) {
275 case EFI_ACPI_6_2_GTDT_GT_BLOCK
:
276 DumpGTBlock (TimerPtr
, *PlatformTimerLength
);
278 case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG
:
279 DumpWatchdogTimer (TimerPtr
, *PlatformTimerLength
);
282 IncrementErrorCount ();
284 L
"ERROR: INVALID Platform Timer Type = %d\n",
289 TimerPtr
+= (*PlatformTimerLength
);
291 } while (Index
< *GtdtPlatformTimerCount
);