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/** @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_
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