84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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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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#include <assert.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <common/debug.h>
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#include <lib/utils_def.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 "xlat_mpu_private.h"
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#include <fvp_r_arch_helpers.h>
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#include <platform_def.h>
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#warning "xlat_mpu library is currently experimental and its API may change in future."
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void xlat_mmap_print(__unused const mmap_region_t *mmap)
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{
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/* Empty */
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}
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#if LOG_LEVEL < LOG_LEVEL_VERBOSE
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void xlat_tables_print(__unused xlat_ctx_t *ctx)
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{
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/* Empty */
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}
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#else /* if LOG_LEVEL >= LOG_LEVEL_VERBOSE */
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static void xlat_tables_print_internal(__unused xlat_ctx_t *ctx)
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{
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int region_to_use = 0;
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uintptr_t region_base;
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size_t region_size;
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uint64_t prenr_el2_value = 0U;
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/*
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* Keep track of how many invalid descriptors are counted in a row.
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* Whenever multiple invalid descriptors are found, only the first one
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* is printed, and a line is added to inform about how many descriptors
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* have been omitted.
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*/
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/*
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* TODO: Remove this WARN() and comment when these API calls are more
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* completely implemented and tested!
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*/
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WARN("%s in this early version of xlat_mpu library may not produce reliable results!",
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__func__);
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/*
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* Sequence through all regions and print those in-use (PRENR has an
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* enable bit for each MPU region, 1 for in-use or 0 for unused):
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*/
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prenr_el2_value = read_prenr_el2();
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for (region_to_use = 0; region_to_use < N_MPU_REGIONS;
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region_to_use++) {
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if (((prenr_el2_value >> region_to_use) & 1U) == 0U) {
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continue;
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}
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region_base = read_prbar_el2() & PRBAR_PRLAR_ADDR_MASK;
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region_size = read_prlar_el2() & PRBAR_PRLAR_ADDR_MASK;
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printf("Address: 0x%llx, size: 0x%llx ",
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(long long) region_base,
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(long long) region_size);
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}
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}
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void xlat_tables_print(__unused xlat_ctx_t *ctx)
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{
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xlat_tables_print_internal(ctx);
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}
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#endif /* LOG_LEVEL >= LOG_LEVEL_VERBOSE */
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