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fix(drtm): sort the address-map in ascending order

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As per the specification the address map region in the
DLME data must be sorted.

Change-Id: Ibf39dad33ef7ce739d6ec8632198df55a4e8a1c3
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
This commit is contained in:
Manish V Badarkhe 2024-12-12 08:44:59 +00:00
parent 277713e0ae
commit 7cf3784814
1 changed files with 19 additions and 1 deletions
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20
services/std_svc/drtm/drtm_res_address_map.c
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@ -1,10 +1,11 @@
/* /*
* Copyright (c) 2022 Arm Limited. All rights reserved. * Copyright (c) 2022-2025 Arm Limited. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
#include <stdint.h> #include <stdint.h>
#include <stdlib.h>
#include <plat/common/platform.h> #include <plat/common/platform.h>
#include <services/drtm_svc.h> #include <services/drtm_svc.h>
@ -23,6 +24,20 @@ static uint8_t drtm_address_map[DRTM_ADDRESS_MAP_SIZE];
static uint64_t drtm_address_map_size; static uint64_t drtm_address_map_size;
static int compare_regions(const void *a, const void *b)
{
const drtm_mem_region_t *region_a = (const drtm_mem_region_t *)a;
const drtm_mem_region_t *region_b = (const drtm_mem_region_t *)b;
if (region_a->region_address < region_b->region_address) {
return -1;
} else if (region_a->region_address > region_b->region_address) {
return 1;
} else {
return 0;
}
}
drtm_memory_region_descriptor_table_t *drtm_build_address_map(void) drtm_memory_region_descriptor_table_t *drtm_build_address_map(void)
{ {
/* Set up pointer to DRTM memory map. */ /* Set up pointer to DRTM memory map. */
@ -75,6 +90,9 @@ drtm_memory_region_descriptor_table_t *drtm_build_address_map(void)
map->num_regions = i; map->num_regions = i;
qsort(map->region, map->num_regions, sizeof(drtm_mem_region_t),
compare_regions);
/* Store total size of address map. */ /* Store total size of address map. */
drtm_address_map_size = sizeof(drtm_memory_region_descriptor_table_t); drtm_address_map_size = sizeof(drtm_memory_region_descriptor_table_t);
drtm_address_map_size += (i * sizeof(drtm_mem_region_t)); drtm_address_map_size += (i * sizeof(drtm_mem_region_t));