| /* |
| * 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 |
