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103 lines
2.9 KiB
103 lines
2.9 KiB
/*
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* Copyright (c) 2021, 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_MPU_PRIVATE_H
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#define XLAT_MPU_PRIVATE_H
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#include <stdbool.h>
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#include <lib/xlat_tables/xlat_tables_defs.h>
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#include <lib/xlat_tables/xlat_tables_v2.h>
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#include <platform_def.h>
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#if PLAT_XLAT_TABLES_DYNAMIC
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/*
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* Private shifts and masks to access fields of an mmap attribute
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*/
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/* Dynamic or static */
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#define MT_DYN_SHIFT U(31)
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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 public header.
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*/
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#endif /* PLAT_XLAT_TABLES_DYNAMIC */
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/* Calculate region-attributes byte for PRBAR part of MPU-region descriptor: */
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uint64_t prbar_attr_value(uint32_t attr);
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/* Calculate region-attributes byte for PRLAR part of MPU-region descriptor: */
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uint64_t prlar_attr_value(uint32_t attr);
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/* Calculates the attr value for a given PRBAR and PRLAR entry value: */
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uint32_t region_attr(uint64_t prbar_attr, uint64_t prlar_attr);
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#define PRBAR_PRLAR_ADDR_MASK UL(0xffffffffffc0)
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/* mask for PRBAR & PRLAR MPU-region field */
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/* MPU region attribute bit fields: */
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#define PRBAR_SH_SHIFT UL(4)
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#define PRBAR_SH_MASK UL(0x3)
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#define PRBAR_AP_SHIFT UL(2)
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#define PRBAR_AP_MASK UL(0x3)
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#define PRBAR_XN_SHIFT UL(1)
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#define PRBAR_XN_MASK UL(0x3)
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#define PRLAR_NS_SHIFT UL(4)
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#define PRLAR_NS_MASK UL(0x3)
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#define PRBAR_ATTR_SHIFT UL(0)
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#define PRBAR_ATTR_MASK UL(0x3f)
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#define PRLAR_ATTR_SHIFT UL(1)
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#define PRLAR_ATTR_MASK UL(0x7)
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#define PRLAR_EN_SHIFT UL(0)
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#define PRLAR_EN_MASK UL(0x1)
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/* Aspects of the source attributes not defined elsewhere: */
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#define MT_PERM_MASK UL(0x1)
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#define MT_SEC_MASK UL(0x1)
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#define MT_EXECUTE_MASK UL(0x3)
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#define MT_TYPE_SHIFT UL(0)
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extern uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
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/*
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* Return the execute-never mask that will prevent instruction fetch at the
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* given translation regime.
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*/
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uint64_t xlat_arch_regime_get_xn_desc(int xlat_regime);
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/* Print VA, PA, size and attributes of all regions in the mmap array. */
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void xlat_mmap_print(const mmap_region_t *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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* Returns a block/page table descriptor for the given level and attributes.
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*/
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uint64_t xlat_desc(const xlat_ctx_t *ctx, uint32_t attr,
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unsigned long long addr_pa, unsigned int level);
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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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unsigned int xlat_arch_current_el(void);
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/*
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* Returns true if the MMU of the translation regime managed by the given
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* xlat_ctx_t is enabled, false otherwise.
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*/
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bool is_mpu_enabled_ctx(const xlat_ctx_t *ctx);
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/*
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* Returns minimum virtual address space size supported by the architecture
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*/
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uintptr_t xlat_get_min_virt_addr_space_size(void);
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#endif /* XLAT_MPU_PRIVATE_H */
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