7b6c8b30a5
The GIC Redistributor (GICR) structure is part of the Multiple APIC Description Table (MADT) that enables the discovery of GIC Redistributor base addresses by providing the Physical Base Address of a page range containing the GIC Redistributors. More than one GICR Structure may be presented in the MADT. The GICR structures should only be used when describing GIC version 3 or higher. The GIC Redistributor information is described in the platform Device Tree, the bindings for which can be found at: - linux/Documentation/devicetree/bindings/interrupt-controller/ arm,gic-v3.yaml The FdtHwInfoParser implements a GIC Redistributor Parser that parses the platform Device Tree to create CM_ARM_GIC_REDIST_INFO objects which are encapsulated in a Configuration Manager descriptor object and added to the platform information repository. The platform Configuration Manager can then utilise this information when generating the MADT table. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/** @file
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Arm Gic Redistributor Parser.
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Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Reference(s):
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- linux/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
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**/
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#ifndef ARM_GICR_PARSER_H_
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#define ARM_GICR_PARSER_H_
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/** CM_ARM_GIC_REDIST_INFO parser function.
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This parser expects FdtBranch to be a Gic interrupt-controller node.
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Gic version must be v3 or higher.
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typedef struct CmArmGicRedistInfo {
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UINT64 DiscoveryRangeBaseAddress; // {Populated}
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UINT32 DiscoveryRangeLength; // {Populated}
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} CM_ARM_GIC_REDIST_INFO;
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A parser parses a Device Tree to populate a specific CmObj type. None,
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one or many CmObj can be created by the parser.
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The created CmObj are then handed to the parser's caller through the
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HW_INFO_ADD_OBJECT interface.
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This can also be a dispatcher. I.e. a function that not parsing a
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Device Tree but calling other parsers.
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@param [in] FdtParserHandle A handle to the parser instance.
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@param [in] FdtBranch When searching for DT node name, restrict
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the search to this Device Tree branch.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED An error occurred.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_NOT_FOUND Not found.
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@retval EFI_UNSUPPORTED Unsupported.
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**/
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EFI_STATUS
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EFIAPI
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ArmGicRInfoParser (
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IN CONST FDT_HW_INFO_PARSER_HANDLE FdtParserHandle,
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IN INT32 FdtBranch
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);
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#endif // ARM_GICR_PARSER_H_
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