| /* |
| * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <assert_macros.S> |
| #include <cortex_a32.h> |
| #include <cpu_macros.S> |
| |
| |
| /* --------------------------------------------- |
| * Disable intra-cluster coherency |
| * Clobbers: r0-r1 |
| * --------------------------------------------- |
| */ |
| func cortex_a32_disable_smp |
| ldcopr16 r0, r1, CORTEX_A32_CPUECTLR_EL1 |
| bic r0, r0, #CORTEX_A32_CPUECTLR_SMPEN_BIT |
| stcopr16 r0, r1, CORTEX_A32_CPUECTLR_EL1 |
| isb |
| dsb sy |
| bx lr |
| endfunc cortex_a32_disable_smp |
| |
| /* ------------------------------------------------- |
| * The CPU Ops reset function for Cortex-A32. |
| * Clobbers: r0-r1 |
| * ------------------------------------------------- |
| */ |
| func cortex_a32_reset_func |
| /* --------------------------------------------- |
| * Enable the SMP bit. |
| * --------------------------------------------- |
| */ |
| ldcopr16 r0, r1, CORTEX_A32_CPUECTLR_EL1 |
| orr r0, r0, #CORTEX_A32_CPUECTLR_SMPEN_BIT |
| stcopr16 r0, r1, CORTEX_A32_CPUECTLR_EL1 |
| isb |
| bx lr |
| endfunc cortex_a32_reset_func |
| |
| /* ---------------------------------------------------- |
| * The CPU Ops core power down function for Cortex-A32. |
| * Clobbers: r0-r3 |
| * ---------------------------------------------------- |
| */ |
| func cortex_a32_core_pwr_dwn |
| /* r12 is pushed to meet the 8 byte stack alignment requirement */ |
| push {r12, lr} |
| |
| /* Assert if cache is enabled */ |
| #if ENABLE_ASSERTIONS |
| ldcopr r0, SCTLR |
| tst r0, #SCTLR_C_BIT |
| ASM_ASSERT(eq) |
| #endif |
| |
| /* --------------------------------------------- |
| * Flush L1 caches. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level1 |
| |
| /* --------------------------------------------- |
| * Come out of intra cluster coherency |
| * --------------------------------------------- |
| */ |
| pop {r12, lr} |
| b cortex_a32_disable_smp |
| endfunc cortex_a32_core_pwr_dwn |
| |
| /* ------------------------------------------------------- |
| * The CPU Ops cluster power down function for Cortex-A32. |
| * Clobbers: r0-r3 |
| * ------------------------------------------------------- |
| */ |
| func cortex_a32_cluster_pwr_dwn |
| /* r12 is pushed to meet the 8 byte stack alignment requirement */ |
| push {r12, lr} |
| |
| /* Assert if cache is enabled */ |
| #if ENABLE_ASSERTIONS |
| ldcopr r0, SCTLR |
| tst r0, #SCTLR_C_BIT |
| ASM_ASSERT(eq) |
| #endif |
| |
| /* --------------------------------------------- |
| * Flush L1 cache. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level1 |
| |
| /* --------------------------------------------- |
| * Disable the optional ACP. |
| * --------------------------------------------- |
| */ |
| bl plat_disable_acp |
| |
| /* --------------------------------------------- |
| * Flush L2 cache. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level2 |
| |
| /* --------------------------------------------- |
| * Come out of intra cluster coherency |
| * --------------------------------------------- |
| */ |
| pop {r12, lr} |
| b cortex_a32_disable_smp |
| endfunc cortex_a32_cluster_pwr_dwn |
| |
| declare_cpu_ops cortex_a32, CORTEX_A32_MIDR, \ |
| cortex_a32_reset_func, \ |
| cortex_a32_core_pwr_dwn, \ |
| cortex_a32_cluster_pwr_dwn |
