arm-trusted-firmware/plat/common/aarch32/platform_helpers.S

89 lines
3.1 KiB
ArmAsm

/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch.h>
#include <asm_macros.S>
.weak plat_my_core_pos
.weak plat_reset_handler
.weak plat_disable_acp
.weak platform_mem_init
.weak plat_panic_handler
/* -----------------------------------------------------
* int plat_my_core_pos(void);
* With this function: CorePos = (ClusterId * 4) +
* CoreId
* -----------------------------------------------------
*/
func plat_my_core_pos
ldcopr r0, MPIDR
and r1, r0, #MPIDR_CPU_MASK
and r0, r0, #MPIDR_CLUSTER_MASK
add r0, r1, r0, LSR #6
bx lr
endfunc plat_my_core_pos
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platform.
* -----------------------------------------------------
*/
func plat_reset_handler
bx lr
endfunc plat_reset_handler
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platform.
* -----------------------------------------------------
*/
func plat_disable_acp
bx lr
endfunc plat_disable_acp
/* ---------------------------------------------------------------------
* Placeholder function which should be redefined by
* each platform.
* ---------------------------------------------------------------------
*/
func platform_mem_init
bx lr
endfunc platform_mem_init
/* -----------------------------------------------------
* void plat_panic_handler(void) __dead2;
* Endless loop by default.
* -----------------------------------------------------
*/
func plat_panic_handler
b plat_panic_handler
endfunc plat_panic_handler