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/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <debug.h>
#include <platform_def.h>
#include <xlat_tables_defs.h>
#include <xlat_tables_v2.h>
#include "xlat_tables_private.h"
/*
* MMU configuration register values for the active translation context. Used
* from the MMU assembly helpers.
*/
uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/*
* Each platform can define the size of its physical and virtual address spaces.
* If the platform hasn't defined one or both of them, default to
* ADDR_SPACE_SIZE. The latter is deprecated, though.
*/
#if ERROR_DEPRECATED
# ifdef ADDR_SPACE_SIZE
# error "ADDR_SPACE_SIZE is deprecated. Use PLAT_xxx_ADDR_SPACE_SIZE instead."
# endif
#elif defined(ADDR_SPACE_SIZE)
# ifndef PLAT_PHY_ADDR_SPACE_SIZE
# define PLAT_PHY_ADDR_SPACE_SIZE ADDR_SPACE_SIZE
# endif
# ifndef PLAT_VIRT_ADDR_SPACE_SIZE
# define PLAT_VIRT_ADDR_SPACE_SIZE ADDR_SPACE_SIZE
# endif
#endif
/*
* Allocate and initialise the default translation context for the BL image
* currently executing.
*/
REGISTER_XLAT_CONTEXT(tf, MAX_MMAP_REGIONS, MAX_XLAT_TABLES,
PLAT_VIRT_ADDR_SPACE_SIZE, PLAT_PHY_ADDR_SPACE_SIZE);
void mmap_add_region(unsigned long long base_pa, uintptr_t base_va, size_t size,
unsigned int attr)
{
mmap_region_t mm = MAP_REGION(base_pa, base_va, size, attr);
mmap_add_region_ctx(&tf_xlat_ctx, &mm);
}
void mmap_add(const mmap_region_t *mm)
{
mmap_add_ctx(&tf_xlat_ctx, mm);
}
#if PLAT_XLAT_TABLES_DYNAMIC
int mmap_add_dynamic_region(unsigned long long base_pa, uintptr_t base_va,
size_t size, unsigned int attr)
{
mmap_region_t mm = MAP_REGION(base_pa, base_va, size, attr);
return mmap_add_dynamic_region_ctx(&tf_xlat_ctx, &mm);
}
int mmap_remove_dynamic_region(uintptr_t base_va, size_t size)
{
return mmap_remove_dynamic_region_ctx(&tf_xlat_ctx,
base_va, size);
}
#endif /* PLAT_XLAT_TABLES_DYNAMIC */
void init_xlat_tables(void)
{
assert(tf_xlat_ctx.xlat_regime == EL_REGIME_INVALID);
int current_el = xlat_arch_current_el();
if (current_el == 1) {
tf_xlat_ctx.xlat_regime = EL1_EL0_REGIME;
} else {
assert(current_el == 3);
tf_xlat_ctx.xlat_regime = EL3_REGIME;
}
init_xlat_tables_ctx(&tf_xlat_ctx);
}
/*
* If dynamic allocation of new regions is disabled then by the time we call the
* function enabling the MMU, we'll have registered all the memory regions to
* map for the system's lifetime. Therefore, at this point we know the maximum
* physical address that will ever be mapped.
*
* If dynamic allocation is enabled then we can't make any such assumption
* because the maximum physical address could get pushed while adding a new
* region. Therefore, in this case we have to assume that the whole address
* space size might be mapped.
*/
#ifdef PLAT_XLAT_TABLES_DYNAMIC
#define MAX_PHYS_ADDR tf_xlat_ctx.pa_max_address
#else
#define MAX_PHYS_ADDR tf_xlat_ctx.max_pa
#endif
#ifdef AARCH32
void enable_mmu_secure(unsigned int flags)
{
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL1_EL0_REGIME);
enable_mmu_direct(flags);
}
#else
void enable_mmu_el1(unsigned int flags)
{
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL1_EL0_REGIME);
enable_mmu_direct_el1(flags);
}
void enable_mmu_el3(unsigned int flags)
{
setup_mmu_cfg((uint64_t *)&mmu_cfg_params, flags,
tf_xlat_ctx.base_table, MAX_PHYS_ADDR,
tf_xlat_ctx.va_max_address, EL3_REGIME);
enable_mmu_direct_el3(flags);
}
#endif /* AARCH32 */
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