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https://github.com/ARM-software/arm-trusted-firmware.git
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ed81f3ebbf
This patch introduces a new header file: include/lib/utils.h. Its purpose is to provide generic macros and helper functions that are independent of any BL image, architecture, platform and even not specific to Trusted Firmware. For now, it contains only 2 macros: ARRAY_SIZE() and IS_POWER_OF_TWO(). These were previously defined in bl_common.h and xlat_tables.c respectively. bl_common.h includes utils.h to retain compatibility for platforms that relied on bl_common.h for the ARRAY_SIZE() macro. Upstream platform ports that use this macro have been updated to include utils.h. Change-Id: I960450f54134f25d1710bfbdc4184f12c049a9a9
73 lines
3.1 KiB
C
73 lines
3.1 KiB
C
/*
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* Copyright (c) 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 <cci.h>
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#include <plat_arm.h>
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#include <platform_def.h>
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#include <utils.h>
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static const int cci_map[] = {
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PLAT_ARM_CCI_CLUSTER0_SL_IFACE_IX,
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PLAT_ARM_CCI_CLUSTER1_SL_IFACE_IX
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};
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/******************************************************************************
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* The following functions are defined as weak to allow a platform to override
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* the way ARM CCI driver is initialised and used.
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*****************************************************************************/
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#pragma weak plat_arm_interconnect_init
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#pragma weak plat_arm_interconnect_enter_coherency
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#pragma weak plat_arm_interconnect_exit_coherency
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/******************************************************************************
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* Helper function to initialize ARM CCI driver.
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*****************************************************************************/
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void plat_arm_interconnect_init(void)
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{
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cci_init(PLAT_ARM_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
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}
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/******************************************************************************
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* Helper function to place current master into coherency
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*****************************************************************************/
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void plat_arm_interconnect_enter_coherency(void)
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{
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cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
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}
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/******************************************************************************
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* Helper function to remove current master from coherency
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*****************************************************************************/
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void plat_arm_interconnect_exit_coherency(void)
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{
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cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
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}
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