arm-trusted-firmware/plat/common/aarch64/platform_helpers.S
Dan Handley 5f0cdb059d Split platform.h into separate headers
Previously, platform.h contained many declarations and definitions
used for different purposes. This file has been split so that:

* Platform definitions used by common code that must be defined
  by the platform are now in platform_def.h. The exact include
  path is exported through $PLAT_INCLUDES in the platform makefile.

* Platform definitions specific to the FVP platform are now in
  /plat/fvp/fvp_def.h.

* Platform API declarations specific to the FVP platform are now
  in /plat/fvp/fvp_private.h.

* The remaining platform API declarations that must be ported by
  each platform are still in platform.h but this file has been
  moved to /include/plat/common since this can be shared by all
  platforms.

Change-Id: Ieb3bb22fbab3ee8027413c6b39a783534aee474a
2014-05-23 15:52:29 +01:00

81 lines
2.9 KiB
ArmAsm

/*
* Copyright (c) 2013-2014, 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>
#include <platform_def.h>
.weak platform_get_core_pos
.weak platform_is_primary_cpu
.weak platform_check_mpidr
.weak plat_report_exception
/* -----------------------------------------------------
* int platform_get_core_pos(int mpidr);
* With this function: CorePos = (ClusterId * 4) +
* CoreId
* -----------------------------------------------------
*/
func platform_get_core_pos
and x1, x0, #MPIDR_CPU_MASK
and x0, x0, #MPIDR_CLUSTER_MASK
add x0, x1, x0, LSR #6
ret
/* -----------------------------------------------------
* void platform_is_primary_cpu (unsigned int mpid);
*
* Given the mpidr say whether this cpu is the primary
* cpu (applicable ony after a cold boot)
* -----------------------------------------------------
*/
func platform_is_primary_cpu
and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
cmp x0, #PRIMARY_CPU
cset x0, eq
ret
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platform.
* -----------------------------------------------------
*/
func platform_check_mpidr
mov x0, xzr
ret
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platform.
* -----------------------------------------------------
*/
func plat_report_exception
ret