| Usama Arif | 82e9509 | 2019-06-18 16:46:05 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019, 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 | #include <platform_def.h> |
| 10 | |
| 11 | .globl plat_secondary_cold_boot_setup |
| 12 | .globl plat_get_my_entrypoint |
| 13 | .globl plat_is_my_cpu_primary |
| 14 | |
| 15 | /* -------------------------------------------------------------------- |
| 16 | * void plat_secondary_cold_boot_setup (void); |
| 17 | * |
| 18 | * For AArch32, cold-booting secondary CPUs is not yet |
| 19 | * implemented and they panic. |
| 20 | * -------------------------------------------------------------------- |
| 21 | */ |
| 22 | func plat_secondary_cold_boot_setup |
| 23 | cb_panic: |
| 24 | wfi |
| 25 | b cb_panic |
| 26 | endfunc plat_secondary_cold_boot_setup |
| 27 | |
| 28 | /* --------------------------------------------------------------------- |
| 29 | * unsigned long plat_get_my_entrypoint (void); |
| 30 | * |
| 31 | * Main job of this routine is to distinguish between a cold and warm |
| 32 | * boot. |
| 33 | * --------------------------------------------------------------------- |
| 34 | */ |
| 35 | func plat_get_my_entrypoint |
| 36 | /* TODO support warm boot */ |
| 37 | /* Cold reset */ |
| 38 | mov r0, #0 |
| 39 | bx lr |
| 40 | |
| 41 | endfunc plat_get_my_entrypoint |
| 42 | |
| 43 | /* ----------------------------------------------------- |
| 44 | * unsigned int plat_is_my_cpu_primary (void); |
| 45 | * |
| 46 | * Find out whether the current cpu is the primary |
| 47 | * cpu. |
| 48 | * ----------------------------------------------------- |
| 49 | */ |
| 50 | func plat_is_my_cpu_primary |
| 51 | ldcopr r0, MPIDR |
| 52 | ldr r1, =MPIDR_AFFINITY_MASK |
| 53 | and r0, r1 |
| 54 | cmp r0, #0 |
| 55 | moveq r0, #1 |
| 56 | movne r0, #0 |
| 57 | bx lr |
| 58 | endfunc plat_is_my_cpu_primary |