| Sandrine Bailleux | 3cd87d7 | 2018-10-09 11:12:55 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2018, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <arch.h> |
| 8 | #include <asm_macros.S> |
| 9 | |
| 10 | .globl platform_get_core_pos |
| 11 | |
| 12 | /* |
| 13 | * Return 0 to 3 for the Cortex-A53 cores and 4 to 5 for the Cortex-A57 |
| 14 | * cores. |
| 15 | */ |
| 16 | func platform_get_core_pos |
| 17 | and r1, r0, #MPIDR_CPU_MASK |
| 18 | and r0, r0, #MPIDR_CLUSTER_MASK |
| 19 | /* Swap Cortex-A53/Cortex-A57 order. */ |
| 20 | eor r0, r0, #(1 << MPIDR_AFF1_SHIFT) |
| 21 | add r0, r1, r0, LSR #6 |
| 22 | bx lr |
| 23 | endfunc platform_get_core_pos |