95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/*
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* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __XLAT_TABLES_PRIVATE_H__
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#define __XLAT_TABLES_PRIVATE_H__
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#include <platform_def.h>
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#include <xlat_tables_defs.h>
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#if PLAT_XLAT_TABLES_DYNAMIC
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/*
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* Shifts and masks to access fields of an mmap_attr_t
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*/
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/* Dynamic or static */
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#define MT_DYN_SHIFT 30 /* 31 would cause undefined behaviours */
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/*
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* Memory mapping private attributes
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*
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* Private attributes not exposed in the mmap_attr_t enum.
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*/
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typedef enum {
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/*
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* Regions mapped before the MMU can't be unmapped dynamically (they are
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* static) and regions mapped with MMU enabled can be unmapped. This
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* behaviour can't be overridden.
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*
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* Static regions can overlap each other, dynamic regions can't.
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*/
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MT_STATIC = 0 << MT_DYN_SHIFT,
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MT_DYNAMIC = 1 << MT_DYN_SHIFT
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} mmap_priv_attr_t;
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#endif /* PLAT_XLAT_TABLES_DYNAMIC */
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/*
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* Invalidate all TLB entries that match the given virtual address. This
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* operation applies to all PEs in the same Inner Shareable domain as the PE
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* that executes this function. This functions must be called for every
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* translation table entry that is modified.
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*
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* xlat_arch_tlbi_va() applies the invalidation to the exception level of the
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* current translation regime, whereas xlat_arch_tlbi_va_regime() applies it to
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* the given translation regime.
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*
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* Note, however, that it is architecturally UNDEFINED to invalidate TLB entries
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* pertaining to a higher exception level, e.g. invalidating EL3 entries from
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* S-EL1.
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*/
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void xlat_arch_tlbi_va(uintptr_t va);
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void xlat_arch_tlbi_va_regime(uintptr_t va, xlat_regime_t xlat_regime);
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/*
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* This function has to be called at the end of any code that uses the function
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* xlat_arch_tlbi_va().
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*/
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void xlat_arch_tlbi_va_sync(void);
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/* Print VA, PA, size and attributes of all regions in the mmap array. */
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void print_mmap(mmap_region_t *const mmap);
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/*
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* Print the current state of the translation tables by reading them from
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* memory.
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*/
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void xlat_tables_print(xlat_ctx_t *ctx);
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/*
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* Architecture-specific initialization code.
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*/
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/* Returns the current Exception Level. The returned EL must be 1 or higher. */
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int xlat_arch_current_el(void);
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/*
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* Return the maximum physical address supported by the hardware.
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* This value depends on the execution state (AArch32/AArch64).
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*/
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unsigned long long xlat_arch_get_max_supported_pa(void);
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/* Enable MMU and configure it to use the specified translation tables. */
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void enable_mmu_arch(unsigned int flags, uint64_t *base_table,
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unsigned long long max_pa, uintptr_t max_va);
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/*
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* Return 1 if the MMU of the translation regime managed by the given xlat_ctx_t
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* is enabled, 0 otherwise.
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*/
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int is_mmu_enabled_ctx(const xlat_ctx_t *ctx);
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#endif /* __XLAT_TABLES_PRIVATE_H__ */
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