mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
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4c0d039076
This patch reworks type usage in generic code, drivers and ARM platform files to make it more portable. The major changes done with respect to type usage are as listed below: * Use uintptr_t for storing address instead of uint64_t or unsigned long. * Review usage of unsigned long as it can no longer be assumed to be 64 bit. * Use u_register_t for register values whose width varies depending on whether AArch64 or AArch32. * Use generic C types where-ever possible. In addition to the above changes, this patch also modifies format specifiers in print invocations so that they are AArch64/AArch32 agnostic. Only files related to upcoming feature development have been reworked. Change-Id: I9f8c78347c5a52ba7027ff389791f1dad63ee5f8
197 lines
6.8 KiB
ArmAsm
197 lines
6.8 KiB
ArmAsm
/*
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* Copyright (c) 2014-2016, 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 <assert_macros.S>
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#include <platform_def.h>
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.local platform_normal_stacks
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#if ENABLE_PLAT_COMPAT
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.globl plat_get_my_stack
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.globl plat_set_my_stack
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.weak platform_get_stack
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.weak platform_set_stack
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#else
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.weak plat_get_my_stack
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.weak plat_set_my_stack
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.globl platform_get_stack
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.globl platform_set_stack
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#endif /* __ENABLE_PLAT_COMPAT__ */
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#if ENABLE_PLAT_COMPAT
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/* ---------------------------------------------------------------------
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* When the compatility layer is enabled, the new platform APIs
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* viz plat_get_my_stack() and plat_set_my_stack() need to be
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* defined using the previous APIs platform_get_stack() and
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* platform_set_stack(). Also we need to provide weak definitions
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* of platform_get_stack() and platform_set_stack() for the platforms
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* to reuse.
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* --------------------------------------------------------------------
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*/
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/* -----------------------------------------------------
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* unsigned long plat_get_my_stack ()
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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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mrs x0, mpidr_el1
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b platform_get_stack
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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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mrs x0, mpidr_el1
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b platform_set_stack
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endfunc plat_set_my_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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endfunc platform_get_stack
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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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endfunc platform_set_stack
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#else
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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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/* -------------------------------------------------------
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* unsigned long platform_get_stack (unsigned long mpidr)
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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. The
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* 'mpidr' should correspond to that of the current CPU.
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* This function is deprecated and plat_get_my_stack()
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* should be used instead.
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* -------------------------------------------------------
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*/
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func_deprecated platform_get_stack
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#if ASM_ASSERTION
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mrs x1, mpidr_el1
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cmp x0, x1
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ASM_ASSERT(eq)
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#endif
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b plat_get_my_stack
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endfunc_deprecated platform_get_stack
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/* -----------------------------------------------------
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* void platform_set_stack (unsigned long mpidr)
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*
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* For the current CPU, this function sets the stack pointer
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* to a stack allocated in normal memory. The
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* 'mpidr' should correspond to that of the current CPU.
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* This function is deprecated and plat_get_my_stack()
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* should be used instead.
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* -----------------------------------------------------
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*/
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func_deprecated platform_set_stack
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#if ASM_ASSERTION
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mrs x1, mpidr_el1
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cmp x0, x1
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ASM_ASSERT(eq)
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#endif
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b plat_set_my_stack
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endfunc_deprecated platform_set_stack
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/* -----------------------------------------------------
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* uintptr_t plat_get_my_stack ()
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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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#endif /*__ENABLE_PLAT_COMPAT__*/
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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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CACHE_WRITEBACK_GRANULE
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