2014-03-20 10:48:23 +00:00
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/*
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2017-04-20 09:58:28 +01:00
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* Copyright (c) 2014-2017, ARM Limited and Contributors. All rights reserved.
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2014-03-20 10:48:23 +00:00
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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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2014-03-20 10:48:23 +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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2015-06-10 13:49:59 +01:00
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#include <assert_macros.S>
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2014-05-14 17:44:19 +01:00
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#include <platform_def.h>
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2014-03-20 10:48:23 +00:00
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.local platform_normal_stacks
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2015-04-09 13:40:55 +01:00
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.weak plat_get_my_stack
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.weak plat_set_my_stack
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2015-07-13 16:26:11 +01:00
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.globl platform_get_stack
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.globl platform_set_stack
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2015-06-10 13:49:59 +01:00
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2015-07-13 16:26:11 +01:00
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/* ---------------------------------------------------------------------
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* When the compatility layer is disabled, the new platform APIs
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* viz plat_get_my_stack() and plat_set_my_stack() are
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* supported by the platform and the previous APIs platform_get_stack()
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* and platform_set_stack() are defined in terms of new APIs making use
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* of the fact that they are only ever invoked for the current CPU.
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* This is to enable components of Trusted Firmware like SPDs using the
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* old platform APIs to continue to work.
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* --------------------------------------------------------------------
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*/
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2015-04-09 13:40:55 +01:00
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/* -----------------------------------------------------
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2016-06-16 14:52:04 +01:00
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* uintptr_t plat_get_my_stack ()
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2015-04-09 13:40:55 +01:00
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*
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* For the current 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 plat_get_my_stack
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mov x10, x30 // lr
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get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE
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ret x10
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endfunc plat_get_my_stack
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/* -----------------------------------------------------
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* void plat_set_my_stack ()
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*
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* For the current CPU, this function sets the stack
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* pointer to a stack allocated in normal memory.
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* -----------------------------------------------------
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*/
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func plat_set_my_stack
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mov x9, x30 // lr
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bl plat_get_my_stack
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mov sp, x0
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ret x9
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endfunc plat_set_my_stack
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2014-03-20 10:48:23 +00:00
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/* -----------------------------------------------------
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2014-06-26 11:12:37 +01:00
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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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2014-03-20 10:48:23 +00:00
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* -----------------------------------------------------
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*/
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declare_stack platform_normal_stacks, tzfw_normal_stacks, \
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2016-06-09 17:16:35 +01:00
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PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT, \
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CACHE_WRITEBACK_GRANULE
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