1/* 2 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7#include <arch.h> 8#include <asm_macros.S> 9#include <assert_macros.S> 10#include <cortex_a9.h> 11#include <cpu_macros.S> 12 13 .macro assert_cache_enabled 14#if ENABLE_ASSERTIONS 15 ldcopr r0, SCTLR 16 tst r0, #SCTLR_C_BIT 17 ASM_ASSERT(eq) 18#endif 19 .endm 20 21func cortex_a9_disable_smp 22 ldcopr r0, ACTLR 23 bic r0, #CORTEX_A9_ACTLR_SMP_BIT 24 stcopr r0, ACTLR 25 isb 26 dsb sy 27 bx lr 28endfunc cortex_a9_disable_smp 29 30func cortex_a9_enable_smp 31 ldcopr r0, ACTLR 32 orr r0, #CORTEX_A9_ACTLR_SMP_BIT 33 stcopr r0, ACTLR 34 isb 35 bx lr 36endfunc cortex_a9_enable_smp 37 38func cortex_a9_reset_func 39 b cortex_a9_enable_smp 40endfunc cortex_a9_reset_func 41 42func cortex_a9_core_pwr_dwn 43 push {r12, lr} 44 45 assert_cache_enabled 46 47 /* Flush L1 cache */ 48 mov r0, #DC_OP_CISW 49 bl dcsw_op_level1 50 51 /* Exit cluster coherency */ 52 pop {r12, lr} 53 b cortex_a9_disable_smp 54endfunc cortex_a9_core_pwr_dwn 55 56func cortex_a9_cluster_pwr_dwn 57 push {r12, lr} 58 59 assert_cache_enabled 60 61 /* Flush L1 caches */ 62 mov r0, #DC_OP_CISW 63 bl dcsw_op_level1 64 65 bl plat_disable_acp 66 67 /* Exit cluster coherency */ 68 pop {r12, lr} 69 b cortex_a9_disable_smp 70endfunc cortex_a9_cluster_pwr_dwn 71 72declare_cpu_ops cortex_a9, CORTEX_A9_MIDR, \ 73 cortex_a9_reset_func, \ 74 cortex_a9_core_pwr_dwn, \ 75 cortex_a9_cluster_pwr_dwn 76