1 files changed, 66 insertions, 0 deletions
diff --git a/DynamicTablesPkg/Library/FdtHwInfoParserLib/Arm/GenericTimer/ArmGenericTimerParser.h b/DynamicTablesPkg/Library/FdtHwInfoParserLib/Arm/GenericTimer/ArmGenericTimerParser.h
new file mode 100644
index 0000000000..d7fa278c90
--- /dev/null
+++ b/DynamicTablesPkg/Library/FdtHwInfoParserLib/Arm/GenericTimer/ArmGenericTimerParser.h
@@ -0,0 +1,66 @@
+/** @file
+  Arm generic timer parser.
+
+  Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Reference(s):
+  - linux/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
+**/
+
+#ifndef ARM_GENERIC_TIMER_PARSER_H_
+#define ARM_GENERIC_TIMER_PARSER_H_
+
+/** An enum listing the FDT interrupt items.
+*/
+typedef enum FdtTimerInterruptItems {
+  FdtSecureTimerIrq,      ///< Secure timer IRQ
+  FdtNonSecureTimerIrq,   ///< Non-secure timer IRQ
+  FdtVirtualTimerIrq,     ///< Virtual timer IRQ
+  FdtHypervisorTimerIrq,  ///< Hypervisor timer IRQ
+  FdtMaxTimerItem         ///< Max timer item
+} FDT_TIMER_INTERRUPT_ITEMS;
+
+/** CM_ARM_BOOT_ARCH_INFO parser function.
+
+  The following structure is populated:
+  typedef struct CmArmGenericTimerInfo {
+    UINT64  CounterControlBaseAddress;        // {default}
+    UINT64  CounterReadBaseAddress;           // {default}
+    UINT32  SecurePL1TimerGSIV;               // {Populated}
+    UINT32  SecurePL1TimerFlags;              // {Populated}
+    UINT32  NonSecurePL1TimerGSIV;            // {Populated}
+    UINT32  NonSecurePL1TimerFlags;           // {Populated}
+    UINT32  VirtualTimerGSIV;                 // {Populated}
+    UINT32  VirtualTimerFlags;                // {Populated}
+    UINT32  NonSecurePL2TimerGSIV;            // {Populated}
+    UINT32  NonSecurePL2TimerFlags;           // {Populated}
+    UINT32  VirtualPL2TimerGSIV;              // {default}
+    UINT32  VirtualPL2TimerFlags;             // {default}
+  } CM_ARM_GENERIC_TIMER_INFO;
+
+  A parser parses a Device Tree to populate a specific CmObj type. None,
+  one or many CmObj can be created by the parser.
+  The created CmObj are then handed to the parser's caller through the
+  HW_INFO_ADD_OBJECT interface.
+  This can also be a dispatcher. I.e. a function that not parsing a
+  Device Tree but calling other parsers.
+
+  @param [in]  FdtParserHandle A handle to the parser instance.
+  @param [in]  FdtBranch       When searching for DT node name, restrict
+                               the search to this Device Tree branch.
+
+  @retval EFI_SUCCESS             The function completed successfully.
+  @retval EFI_ABORTED             An error occurred.
+  @retval EFI_INVALID_PARAMETER   Invalid parameter.
+  @retval EFI_NOT_FOUND           Not found.
+  @retval EFI_UNSUPPORTED         Unsupported.
+**/
+EFI_STATUS
+EFIAPI
+ArmGenericTimerInfoParser (
+  IN  CONST FDT_HW_INFO_PARSER_HANDLE  FdtParserHandle,
+  IN        INT32                      FdtBranch
+  );
+
+#endif // ARM_GENERIC_TIMER_PARSER_H_