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/*
* Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <common/debug.h>
#include <lib/utils_def.h>
#include <lib/xlat_tables/xlat_tables_defs.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
#include "xlat_mpu_private.h"
#include <fvp_r_arch_helpers.h>
#include <platform_def.h>
#warning "xlat_mpu library is currently experimental and its API may change in future."
void xlat_mmap_print(__unused const mmap_region_t *mmap)
{
/* Empty */
}
#if LOG_LEVEL < LOG_LEVEL_VERBOSE
void xlat_tables_print(__unused xlat_ctx_t *ctx)
{
/* Empty */
}
#else /* if LOG_LEVEL >= LOG_LEVEL_VERBOSE */
static void xlat_tables_print_internal(__unused xlat_ctx_t *ctx)
{
int region_to_use = 0;
uintptr_t region_base;
size_t region_size;
uint64_t prenr_el2_value = 0U;
/*
* Keep track of how many invalid descriptors are counted in a row.
* Whenever multiple invalid descriptors are found, only the first one
* is printed, and a line is added to inform about how many descriptors
* have been omitted.
*/
/*
* TODO: Remove this WARN() and comment when these API calls are more
* completely implemented and tested!
*/
WARN("%s in this early version of xlat_mpu library may not produce reliable results!",
__func__);
/*
* Sequence through all regions and print those in-use (PRENR has an
* enable bit for each MPU region, 1 for in-use or 0 for unused):
*/
prenr_el2_value = read_prenr_el2();
for (region_to_use = 0; region_to_use < N_MPU_REGIONS;
region_to_use++) {
if (((prenr_el2_value >> region_to_use) & 1U) == 0U) {
continue;
}
region_base = read_prbar_el2() & PRBAR_PRLAR_ADDR_MASK;
region_size = read_prlar_el2() & PRBAR_PRLAR_ADDR_MASK;
printf("Address: 0x%llx, size: 0x%llx ",
(long long) region_base,
(long long) region_size);
}
}
void xlat_tables_print(__unused xlat_ctx_t *ctx)
{
xlat_tables_print_internal(ctx);
}
#endif /* LOG_LEVEL >= LOG_LEVEL_VERBOSE */
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