mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-16 17:44:19 +00:00
4c700c1563
Align entire TF-A to use Arm in copyright header. Change-Id: Ief9992169efdab61d0da6bd8c5180de7a4bc2244 Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
48 lines
1.3 KiB
ArmAsm
48 lines
1.3 KiB
ArmAsm
/*
|
|
* Copyright (c) 2014-2020, Arm Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <asm_macros.S>
|
|
#include <lib/el3_runtime/cpu_data.h>
|
|
|
|
.globl init_cpu_data_ptr
|
|
.globl _cpu_data_by_index
|
|
|
|
/* -----------------------------------------------------------------
|
|
* void init_cpu_data_ptr(void)
|
|
*
|
|
* Initialise the TPIDR_EL3 register to refer to the cpu_data_t
|
|
* for the calling CPU. This must be called before cm_get_cpu_data()
|
|
*
|
|
* This can be called without a valid stack. It assumes that
|
|
* plat_my_core_pos() does not clobber register x10.
|
|
* clobbers: x0, x1, x10
|
|
* -----------------------------------------------------------------
|
|
*/
|
|
func init_cpu_data_ptr
|
|
mov x10, x30
|
|
bl plat_my_core_pos
|
|
bl _cpu_data_by_index
|
|
msr tpidr_el3, x0
|
|
ret x10
|
|
endfunc init_cpu_data_ptr
|
|
|
|
/* -----------------------------------------------------------------
|
|
* cpu_data_t *_cpu_data_by_index(uint32_t cpu_index)
|
|
*
|
|
* Return the cpu_data structure for the CPU with given linear index
|
|
*
|
|
* This can be called without a valid stack.
|
|
* clobbers: x0, x1
|
|
* -----------------------------------------------------------------
|
|
*/
|
|
func _cpu_data_by_index
|
|
mov_imm x1, CPU_DATA_SIZE
|
|
mul x0, x0, x1
|
|
adrp x1, percpu_data
|
|
add x1, x1, :lo12:percpu_data
|
|
add x0, x0, x1
|
|
ret
|
|
endfunc _cpu_data_by_index
|