1 /*
2 * Copyright 2018-2021 NXP
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 */
7
8 #include <assert.h>
9 #include <stdint.h>
10 #include <string.h>
11
12 #include <common/debug.h>
13 #include <lib/cassert.h>
14 #include <sfp.h>
15 #include <tools_share/tbbr_oid.h>
16
17 #include <plat/common/platform.h>
18 #include "plat_common.h"
19
20 extern char nxp_rotpk_hash[], nxp_rotpk_hash_end[];
21
plat_get_rotpk_info(void * cookie,void ** key_ptr,unsigned int * key_len,unsigned int * flags)22 int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len,
23 unsigned int *flags)
24 {
25 *key_ptr = nxp_rotpk_hash;
26 *key_len = nxp_rotpk_hash_end - nxp_rotpk_hash;
27 *flags = ROTPK_IS_HASH;
28
29 return 0;
30 }
31
plat_get_nv_ctr(void * cookie,unsigned int * nv_ctr)32 int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr)
33 {
34 const char *oid;
35 uint32_t uid_num;
36 uint32_t val = 0U;
37
38 assert(cookie != NULL);
39 assert(nv_ctr != NULL);
40
41 oid = (const char *)cookie;
42 if (strcmp(oid, TRUSTED_FW_NVCOUNTER_OID) == 0) {
43 uid_num = 3U;
44 } else if (strcmp(oid, NON_TRUSTED_FW_NVCOUNTER_OID) == 0) {
45 uid_num = 4U;
46 } else {
47 return 1;
48 }
49
50 val = sfp_read_oem_uid(uid_num);
51
52 INFO("SFP Value read is %x from UID %d\n", val, uid_num);
53 if (val == 0U) {
54 *nv_ctr = 0U;
55 } else {
56 *nv_ctr = (32U - __builtin_clz(val));
57 }
58
59 INFO("NV Counter value for UID %d is %d\n", uid_num, *nv_ctr);
60 return 0;
61
62 }
63
plat_set_nv_ctr(void * cookie,unsigned int nv_ctr)64 int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr)
65 {
66 const char *oid;
67 uint32_t uid_num, sfp_val;
68
69 assert(cookie != NULL);
70
71 /* Counter values upto 32 are supported */
72 if (nv_ctr > 32U) {
73 return 1;
74 }
75
76 oid = (const char *)cookie;
77 if (strcmp(oid, TRUSTED_FW_NVCOUNTER_OID) == 0) {
78 uid_num = 3U;
79 } else if (strcmp(oid, NON_TRUSTED_FW_NVCOUNTER_OID) == 0) {
80 uid_num = 4U;
81 } else {
82 return 1;
83 }
84 sfp_val = (1U << (nv_ctr - 1));
85
86 if (sfp_write_oem_uid(uid_num, sfp_val) == 1) {
87 /* Enable POVDD on board */
88 if (board_enable_povdd()) {
89 sfp_program_fuses();
90 }
91
92 /* Disable POVDD on board */
93 board_disable_povdd();
94 } else {
95 ERROR("Invalid OEM UID sent.\n");
96 return 1;
97 }
98
99 return 0;
100 }
101
plat_get_mbedtls_heap(void ** heap_addr,size_t * heap_size)102 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
103 {
104 return get_mbedtls_heap_helper(heap_addr, heap_size);
105 }
106