You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
534 B
27 lines
534 B
/*
|
|
* Copyright (c) 2020, Arm Limited. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <asm_macros.S>
|
|
#include <neoverse_n_common.h>
|
|
|
|
.global is_scu_present_in_dsu
|
|
|
|
/*
|
|
* Check if the SCU L3 Unit is present on the DSU
|
|
* 1-> SCU present
|
|
* 0-> SCU not present
|
|
*
|
|
* This function is implemented as weak on dsu_helpers.S and must be
|
|
* overwritten for Neoverse Nx cores.
|
|
*/
|
|
|
|
func is_scu_present_in_dsu
|
|
mrs x0, CPUCFR_EL1
|
|
ubfx x0, x0, #SCU_SHIFT, #1
|
|
eor x0, x0, #1
|
|
ret
|
|
endfunc is_scu_present_in_dsu
|