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https://github.com/ARM-software/arm-trusted-firmware.git
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539a7b383d
This patch removes the allocation of memory for coherent stacks, associated accessor function and some dead code which called the accessor function. It also updates the porting guide to remove the concept and the motivation behind using stacks allocated in coherent memory. Fixes ARM-software/tf-issues#198 Change-Id: I00ff9a04f693a03df3627ba39727e3497263fc38
73 lines
2.7 KiB
ArmAsm
73 lines
2.7 KiB
ArmAsm
/*
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* Copyright (c) 2014, 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 <arch.h>
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#include <asm_macros.S>
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#include <platform_def.h>
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.local platform_normal_stacks
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.weak platform_set_stack
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.weak platform_get_stack
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/* -----------------------------------------------------
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* unsigned long platform_get_stack (unsigned long mpidr)
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*
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* For a given CPU, this function returns the stack
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* pointer for a stack allocated in device memory.
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* -----------------------------------------------------
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*/
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func platform_get_stack
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mov x10, x30 // lr
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get_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE
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ret x10
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/* -----------------------------------------------------
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* void platform_set_stack (unsigned long mpidr)
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*
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* For a given CPU, this function sets the stack pointer
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* to a stack allocated in normal memory.
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* -----------------------------------------------------
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*/
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func platform_set_stack
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mov x9, x30 // lr
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bl platform_get_stack
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mov sp, x0
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ret x9
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/* -----------------------------------------------------
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* Per-cpu stacks in normal memory. Each cpu gets a
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* stack of PLATFORM_STACK_SIZE bytes.
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* -----------------------------------------------------
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*/
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declare_stack platform_normal_stacks, tzfw_normal_stacks, \
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PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT
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