c0e3f5fc11203ed4cc41dddf4aecb6dc600f38d0
[mirror_edk2.git] / ArmPlatformPkg / ArmJunoPkg / AcpiTables / Gtdt.aslc
1 /** @file
2 * Generic Timer Description Table (GTDT)
3 *
4 * Copyright (c) 2012 - 2014, ARM Limited. All rights reserved.
5 *
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
10 *
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.
13 *
14 **/
15
16 #include "ArmPlatform.h"
17 #include <Library/AcpiLib.h>
18 #include <Library/PcdLib.h>
19 #include <IndustryStandard/Acpi.h>
20
21 #define GTDT_GLOBAL_FLAGS_MAPPED EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_MEMORY_MAPPED_BLOCK_PRESENT
22 #define GTDT_GLOBAL_FLAGS_NOT_MAPPED 0
23 #define GTDT_GLOBAL_FLAGS_EDGE EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_INTERRUPT_MODE
24 #define GTDT_GLOBAL_FLAGS_LEVEL 0
25
26 // Note: We could have a build flag that switches between memory mapped/non-memory mapped timer
27 #ifdef SYSTEM_TIMER_BASE_ADDRESS
28 #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
29 #else
30 #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_NOT_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
31 #define SYSTEM_TIMER_BASE_ADDRESS 0xFFFFFFFFFFFFFFFF
32 #endif
33
34 #define GTDT_TIMER_EDGE_TRIGGERED EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE
35 #define GTDT_TIMER_LEVEL_TRIGGERED 0
36 #define GTDT_TIMER_ACTIVE_LOW EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY
37 #define GTDT_TIMER_ACTIVE_HIGH 0
38
39 #define GTDT_GTIMER_FLAGS (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
40
41 #ifdef ARM_JUNO_ACPI_5_0
42 EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt = {
43 ARM_ACPI_HEADER(
44 EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
45 EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE,
46 EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
47 ),
48 SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
49 GTDT_GLOBAL_FLAGS, // UINT32 GlobalFlags
50 FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
51 GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
52 FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
53 GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
54 FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
55 GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags
56 FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV
57 GTDT_GTIMER_FLAGS // UINT32 NonSecurePL2TimerFlags
58 };
59 #else
60 #pragma pack (1)
61
62 typedef struct {
63 EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt;
64 EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE Watchdogs[JUNO_WATCHDOG_COUNT];
65 } EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES;
66
67 #pragma pack ()
68
69 EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES Gtdt = {
70 {
71 ARM_ACPI_HEADER(
72 EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
73 EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE,
74 EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
75 ),
76 SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
77 0, // UINT32 Reserved
78 FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
79 GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
80 FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
81 GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
82 FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
83 GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags
84 FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV
85 GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL2TimerFlags
86 0xFFFFFFFFFFFFFFFF, // UINT64 CntReadBasePhysicalAddress
87 JUNO_WATCHDOG_COUNT, // UINT32 PlatformTimerCount
88 sizeof (EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE) // UINT32 PlatfromTimerOffset
89 },
90 {
91 EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
92 FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 93, 0),
93 EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
94 FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 94, EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER)
95 }
96 };
97 #endif
98
99 //
100 // Reference the table being generated to prevent the optimizer from removing the
101 // data structure from the executable
102 //
103 VOID* CONST ReferenceAcpiTable = &Gtdt;