blob: c6df9c87650989cf1c7c18e5a2837be9fa95f04d [file] [log] [blame]
Louis Mayencourt4da9b312019-09-30 10:57:24 +01001/*
2 * Copyright (c) 2019-2020, ARM Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6#include <assert.h>
7
8#include <common/bl_common.h>
9#include <common/debug.h>
10#include <common/fdt_wrappers.h>
11#include <lib/fconf/fconf_tbbr_getter.h>
12#include <libfdt.h>
13
14struct tbbr_dyn_config_t tbbr_dyn_config;
15
16int fconf_populate_tbbr_dyn_config(uintptr_t config)
17{
18 int err;
19 int node;
20
21 /* As libfdt use void *, we can't avoid this cast */
22 const void *dtb = (void *)config;
23
24 /* Assert the node offset point to "arm,tb_fw" compatible property */
25 const char *compatible_str = "arm,tb_fw";
26 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
27 if (node < 0) {
28 ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str);
29 return node;
30 }
31
32 /* Locate the disable_auth cell and read the value */
33 err = fdtw_read_cells(dtb, node, "disable_auth", 1, &tbbr_dyn_config.disable_auth);
34 if (err < 0) {
35 WARN("FCONF: Read cell failed for `disable_auth`\n");
36 return err;
37 }
38
39 /* Check if the value is boolean */
40 if ((tbbr_dyn_config.disable_auth != 0U) && (tbbr_dyn_config.disable_auth != 1U)) {
41 WARN("Invalid value for `disable_auth` cell %d\n", tbbr_dyn_config.disable_auth);
42 return -1;
43 }
44
45#if defined(DYN_DISABLE_AUTH)
46 if (tbbr_dyn_config.disable_auth == 1)
47 dyn_disable_auth();
48#endif
49
Louis Mayencourt5b9055f2019-10-01 10:45:14 +010050 /* Retrieve the Mbed TLS heap details from the DTB */
51 err = fdtw_read_cells(dtb, node,
52 "mbedtls_heap_addr", 2, &tbbr_dyn_config.mbedtls_heap_addr);
53 if (err < 0) {
54 ERROR("FCONF: Read cell failed for mbedtls_heap\n");
55 return err;
56 }
57
58 err = fdtw_read_cells(dtb, node,
59 "mbedtls_heap_size", 1, &tbbr_dyn_config.mbedtls_heap_size);
60 if (err < 0) {
61 ERROR("FCONF: Read cell failed for mbedtls_heap\n");
62 return err;
63 }
64
Louis Mayencourt4da9b312019-09-30 10:57:24 +010065 VERBOSE("FCONF:tbbr.disable_auth cell found with value = %d\n",
66 tbbr_dyn_config.disable_auth);
Louis Mayencourt5b9055f2019-10-01 10:45:14 +010067 VERBOSE("FCONF:tbbr.mbedtls_heap_addr cell found with value = %p\n",
68 tbbr_dyn_config.mbedtls_heap_addr);
69 VERBOSE("FCONF:tbbr.mbedtls_heap_size cell found with value = %zu\n",
70 tbbr_dyn_config.mbedtls_heap_size);
Louis Mayencourt4da9b312019-09-30 10:57:24 +010071
72 return 0;
73}
74
75FCONF_REGISTER_POPULATOR(tbbr, fconf_populate_tbbr_dyn_config);