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https://github.com/tianocore/edk2
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5c6e9d475f
Add ArmSmcccSocIdLib to provide a shared interface for checking support for the SMCCC Architecture SoC ID service and retrieving the JEP106 identification code and SoC revision. Move the existing SMCCC SoC ID handling out of ProcessorSubClassDxe and update the driver to use the new library. Continue to use the MIDR value for the SMBIOS Processor ID when the SMCCC SoC ID service is unavailable. This allows other SMBIOS implementations to reuse the SMCCC handling without duplicating it or depending on the legacy ProcessorSubClassDxe driver. Signed-off-by: Varshit Pandya <Varshit.Pandya@arm.com>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/** @file
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Arm SMCCC SoC ID library.
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Copyright (c) 2026, Arm Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#pragma once
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/**
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Check whether the SMCCC Architecture SoC ID interface is supported.
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@retval TRUE The SMCCC Architecture SoC ID interface is supported.
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@retval FALSE The SMCCC Architecture SoC ID interface is not supported.
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**/
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BOOLEAN
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ArmSmcccSocIdIsSupported (
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VOID
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);
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/**
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Get the JEP106 identification code and SoC revision using the SMCCC
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Architecture SoC ID interface.
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@param[out] Jep106Code Pointer to the JEP106 identification code.
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@param[out] SocRevision Pointer to the SoC revision.
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@retval EFI_SUCCESS The SoC identification information was
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returned successfully.
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@retval EFI_INVALID_PARAMETER A required output parameter is NULL.
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@retval EFI_UNSUPPORTED The SMCCC Architecture SoC ID interface is
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unsupported or an SoC ID call failed.
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**/
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EFI_STATUS
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ArmSmcccGetSocId (
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OUT UINT32 *Jep106Code,
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OUT UINT32 *SocRevision
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);
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