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/*
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* Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <asm_macros.S>
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#include <cpu_data.h>
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.globl init_cpu_data_ptr
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.globl _cpu_data_by_index
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/* -----------------------------------------------------------------
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* void init_cpu_data_ptr(void)
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*
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* Initialise the TPIDR_EL3 register to refer to the cpu_data_t
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* for the calling CPU. This must be called before cm_get_cpu_data()
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*
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* This can be called without a valid stack. It assumes that
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* plat_my_core_pos() does not clobber register x10.
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* clobbers: x0, x1, x10
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* -----------------------------------------------------------------
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*/
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func init_cpu_data_ptr
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mov x10, x30
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bl plat_my_core_pos
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bl _cpu_data_by_index
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msr tpidr_el3, x0
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ret x10
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endfunc init_cpu_data_ptr
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/* -----------------------------------------------------------------
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* cpu_data_t *_cpu_data_by_index(uint32_t cpu_index)
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*
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* Return the cpu_data structure for the CPU with given linear index
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*
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* This can be called without a valid stack.
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* clobbers: x0, x1
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* -----------------------------------------------------------------
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*/
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func _cpu_data_by_index
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adr x1, percpu_data
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add x0, x1, x0, LSL #CPU_DATA_LOG2SIZE
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ret
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endfunc _cpu_data_by_index
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