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/*
* Copyright (c) 2017-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef XLAT_TABLES_PRIVATE_H
#define XLAT_TABLES_PRIVATE_H
#include <stdbool.h>
#include <platform_def.h>
#include <lib/xlat_tables/xlat_tables_defs.h>
#if PLAT_XLAT_TABLES_DYNAMIC
/*
* Private shifts and masks to access fields of an mmap attribute
*/
/* Dynamic or static */
#define MT_DYN_SHIFT U(31)
/*
* Memory mapping private attributes
*
* Private attributes not exposed in the public header.
*/
/*
* Regions mapped before the MMU can't be unmapped dynamically (they are
* static) and regions mapped with MMU enabled can be unmapped. This
* behaviour can't be overridden.
*
* Static regions can overlap each other, dynamic regions can't.
*/
#define MT_STATIC (U(0) << MT_DYN_SHIFT)
#define MT_DYNAMIC (U(1) << MT_DYN_SHIFT)
#endif /* PLAT_XLAT_TABLES_DYNAMIC */
extern uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
/* Determine the physical address space encoded in the 'attr' parameter. */
uint32_t xlat_arch_get_pas(uint32_t attr);
/*
* Return the execute-never mask that will prevent instruction fetch at the
* given translation regime.
*/
uint64_t xlat_arch_regime_get_xn_desc(int xlat_regime);
/*
* Invalidate all TLB entries that match the given virtual address. This
* operation applies to all PEs in the same Inner Shareable domain as the PE
* that executes this function. This functions must be called for every
* translation table entry that is modified. It only affects the specified
* translation regime.
*
* Note, however, that it is architecturally UNDEFINED to invalidate TLB entries
* pertaining to a higher exception level, e.g. invalidating EL3 entries from
* S-EL1.
*/
void xlat_arch_tlbi_va(uintptr_t va, int xlat_regime);
/*
* This function has to be called at the end of any code that uses the function
* xlat_arch_tlbi_va().
*/
void xlat_arch_tlbi_va_sync(void);
/* Print VA, PA, size and attributes of all regions in the mmap array. */
void xlat_mmap_print(const mmap_region_t *mmap);
/*
* Print the current state of the translation tables by reading them from
* memory.
*/
void xlat_tables_print(xlat_ctx_t *ctx);
/*
* Returns a block/page table descriptor for the given level and attributes.
*/
uint64_t xlat_desc(const xlat_ctx_t *ctx, uint32_t attr,
unsigned long long addr_pa, unsigned int level);
/*
* Architecture-specific initialization code.
*/
/* Returns the current Exception Level. The returned EL must be 1 or higher. */
unsigned int xlat_arch_current_el(void);
/*
* Return the maximum physical address supported by the hardware.
* This value depends on the execution state (AArch32/AArch64).
*/
unsigned long long xlat_arch_get_max_supported_pa(void);
/*
* Returns true if the MMU of the translation regime managed by the given
* xlat_ctx_t is enabled, false otherwise.
*/
bool is_mmu_enabled_ctx(const xlat_ctx_t *ctx);
/*
* Returns minimum virtual address space size supported by the architecture
*/
uintptr_t xlat_get_min_virt_addr_space_size(void);
#endif /* XLAT_TABLES_PRIVATE_H */
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