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ArmPkg/ArmLib: rename AArch64 variant of ArmReadIdPfr0

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ArmReadIdPfr0 is now used only inside ArmLib. Rename the AArch64
variant ArmReadIdAA64Pfr0 and add a declaration of that only into
local header AArch64/AArch64Lib.h.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Signed-off-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
This commit is contained in:
Leif Lindholm
2020-12-18 13:51:35 +00:00
committed by mergify[bot]
parent 982b0a5778
commit bb56ce816b
3 changed files with 10 additions and 3 deletions
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5
ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
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@@ -3,6 +3,7 @@
# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
# Copyright (c) 2011 - 2017, ARM Limited. All rights reserved.
# Copyright (c) 2016, Linaro Limited. All rights reserved.
# Copyright (c) 2020, NUVIA Inc. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -395,7 +396,7 @@ ASM_FUNC(ArmReadVBar)
ASM_FUNC(ArmEnableVFP)
// Check whether floating-point is implemented in the processor.
mov x1, x30 // Save LR
bl ArmReadIdPfr0 // Read EL1 Processor Feature Register (PFR0)
bl ArmReadIdAA64Pfr0 // Read EL1 Processor Feature Register (PFR0)
mov x30, x1 // Restore LR
ubfx x0, x0, #16, #4 // Extract the FP bits 16:19
cmp x0, #0xF // Check if FP bits are '1111b',
@@ -448,7 +449,7 @@ ASM_FUNC(ArmIsArchTimerImplemented)
ret
ASM_FUNC(ArmReadIdPfr0)
ASM_FUNC(ArmReadIdAA64Pfr0)
mrs x0, id_aa64pfr0_el1 // Read ID_AA64PFR0 Register
ret