1/*
2 * Copyright (c) 2020, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#include <asm_macros.S>
8#include <neoverse_n_common.h>
9
10	.global is_scu_present_in_dsu
11
12/*
13 * Check if the SCU L3 Unit is present on the DSU
14 * 1-> SCU present
15 * 0-> SCU not present
16 *
17 * This function is implemented as weak on dsu_helpers.S and must be
18 * overwritten for Neoverse Nx cores.
19 */
20
21func is_scu_present_in_dsu
22	mrs	x0, CPUCFR_EL1
23	ubfx	x0, x0, #SCU_SHIFT, #1
24	eor	x0, x0, #1
25	ret
26endfunc is_scu_present_in_dsu
27