From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- lib/xlat_tables_v2/xlat_tables_private.h | 110 +++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 lib/xlat_tables_v2/xlat_tables_private.h (limited to 'lib/xlat_tables_v2/xlat_tables_private.h') diff --git a/lib/xlat_tables_v2/xlat_tables_private.h b/lib/xlat_tables_v2/xlat_tables_private.h new file mode 100644 index 0000000..42c9a43 --- /dev/null +++ b/lib/xlat_tables_v2/xlat_tables_private.h @@ -0,0 +1,110 @@ +/* + * 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 + +#include + +#include + +#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 */ -- cgit v1.2.3