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ArmPkg/ProcessorSubClassDxe: Fix the format of ProcessorId 

According to SMBIOS 3.4, section 7.5.3.3 ARM64-class CPUs, if
SMCCC_ARCH_SOC_ID is supported, the first DWORD is the JEP-106 code and
the second DWORD is the SoC revision value. But in the current
implementation, they are set in reverse. This patch is to correct it.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Rebecca Cran <rebecca@nuviainc.com>
Signed-off-by: Nhi Pham <nhi@os.amperecomputing.com>
Reviewed-by: Rebecca Cran <rebecca@nuviainc.com>
Acked-by: Leif Lindholm <leif@nuviainc.com>
This commit is contained in:
Nhi Pham 2021-09-15 20:55:32 +07:00 committed by mergify[bot]
parent 60d8bb9f28
commit ac6388add4
1 changed files with 2 additions and 1 deletions
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3
ArmPkg/Universal/Smbios/ProcessorSubClassDxe/SmbiosProcessorArmCommon.c
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@ -2,6 +2,7 @@
Functions for processor information common to ARM and AARCH64.
Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
Copyright (c) 2021, Ampere Computing LLC. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@ -171,7 +172,7 @@ SmbiosGetProcessorId (
if (HasSmcArm64SocId ()) {
SmbiosGetSmcArm64SocId (&Jep106Code, &SocRevision);
ProcessorId = ((UINT64)Jep106Code << 32) | SocRevision;
ProcessorId = ((UINT64)SocRevision << 32) | Jep106Code;
} else {
ProcessorId = ArmReadMidr ();
}