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feat(cpus): add sysreg_bitfield_insert_from_gpr macro

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A macro 'sysreg_bitfield_insert_from_gpr' is introduced for inserting
bitfield from a general register.

Change-Id: I7288a13d70d98e23dc7a93287b04b493ffce9171
Signed-off-by: Jagdish Gediya <jagdish.gediya@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
This commit is contained in:
Jagdish Gediya 2024-07-23 12:54:28 +01:00 • committed by Leo Yan
parent d3ae67771d
commit ad8b51418e
1 changed files with 9 additions and 1 deletions
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10
include/lib/cpus/aarch64/cpu_macros.S
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2014-2023, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2014-2024, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -456,6 +456,14 @@
msr \_reg, x0
.endm
.macro sysreg_bitfield_insert_from_gpr _reg:req, _gpr:req, _lsb:req, _width:req
/* Source value in register for BFI */
mov x1, \_gpr
mrs x0, \_reg
bfi x0, x1, #\_lsb, #\_width
msr \_reg, x0
.endm
/*
* Apply erratum
*