2016-01-15 09:17:32 +00:00
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/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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2017-05-03 09:38:09 +01:00
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* SPDX-License-Identifier: BSD-3-Clause
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2016-01-15 09:17:32 +00:00
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*/
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#include <arch.h>
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#include <asm_macros.S>
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#include <platform_def.h>
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#include <pmu_sram.h>
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.globl pmu_cpuson_entrypoint_start
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.globl pmu_cpuson_entrypoint_end
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func pmu_cpuson_entrypoint
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pmu_cpuson_entrypoint_start:
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ldr x5, psram_data
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check_wake_cpus:
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mrs x0, MPIDR_EL1
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and x1, x0, #MPIDR_CPU_MASK
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and x0, x0, #MPIDR_CLUSTER_MASK
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orr x0, x0, x1
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/* primary_cpu */
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ldr w1, [x5, #PSRAM_DT_MPIDR]
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cmp w0, w1
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b.eq sys_wakeup
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/*
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* If the core is not the primary cpu,
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* force the core into wfe.
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*/
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wfe_loop:
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wfe
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b wfe_loop
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sys_wakeup:
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/* check ddr flag for resume ddr */
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ldr w2, [x5, #PSRAM_DT_DDRFLAG]
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cmp w2, #0x0
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b.eq sys_resume
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ddr_resume:
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ldr x2, [x5, #PSRAM_DT_SP]
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mov sp, x2
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ldr x1, [x5, #PSRAM_DT_DDR_FUNC]
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ldr x0, [x5, #PSRAM_DT_DDR_DATA]
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blr x1
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sys_resume:
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ldr x1, sys_wakeup_entry
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br x1
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.align 3
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psram_data:
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.quad PSRAM_DT_BASE
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sys_wakeup_entry:
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.quad psci_entrypoint
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pmu_cpuson_entrypoint_end:
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.word 0
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endfunc pmu_cpuson_entrypoint
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