platform_common.c

/*
 * Copyright (c) 2013-2016, 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_helpers.h>
#include <arm_gic.h>
#include <bl_common.h>
#include <cci.h>
#include <debug.h>
#include <string.h>
#include <xlat_tables.h>
#include <platform_def.h>
#include <plat_private.h>

#ifdef PLAT_RK_CCI_BASE
static const int cci_map[] = {
	PLAT_RK_CCI_CLUSTER0_SL_IFACE_IX,
	PLAT_RK_CCI_CLUSTER1_SL_IFACE_IX
};
#endif

/******************************************************************************
 * Macro generating the code for the function setting up the pagetables as per
 * the platform memory map & initialize the mmu, for the given exception level
 ******************************************************************************/
#define DEFINE_CONFIGURE_MMU_EL(_el)					\
	void plat_configure_mmu_el ## _el(unsigned long total_base,	\
					  unsigned long total_size,	\
					  unsigned long ro_start,	\
					  unsigned long ro_limit,	\
					  unsigned long coh_start,	\
					  unsigned long coh_limit)	\
	{								\
		mmap_add_region(total_base, total_base,			\
				total_size,				\
				MT_MEMORY | MT_RW | MT_SECURE);		\
		mmap_add_region(ro_start, ro_start,			\
				ro_limit - ro_start,			\
				MT_MEMORY | MT_RO | MT_SECURE);		\
		mmap_add_region(coh_start, coh_start,			\
				coh_limit - coh_start,			\
				MT_DEVICE | MT_RW | MT_SECURE);		\
		mmap_add(plat_rk_mmap);					\
		init_xlat_tables();					\
									\
		enable_mmu_el ## _el(0);				\
	}

/* Define EL3 variants of the function initialising the MMU */
DEFINE_CONFIGURE_MMU_EL(3)

unsigned long long plat_get_syscnt_freq(void)
{
	return SYS_COUNTER_FREQ_IN_TICKS;
}

void plat_cci_init(void)
{
#ifdef PLAT_RK_CCI_BASE
	/* Initialize CCI driver */
	cci_init(PLAT_RK_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
#endif
}

void plat_cci_enable(void)
{
	/*
	 * Enable CCI coherency for this cluster.
	 * No need for locks as no other cpu is active at the moment.
	 */
#ifdef PLAT_RK_CCI_BASE
	cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
#endif
}

void plat_cci_disable(void)
{
#ifdef PLAT_RK_CCI_BASE
	cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
#endif
}