1*4a135bc3SAlexei Fedorov /*
2*4a135bc3SAlexei Fedorov * Copyright (c) 2020, Arm Limited. All rights reserved.
3*4a135bc3SAlexei Fedorov *
4*4a135bc3SAlexei Fedorov * SPDX-License-Identifier: BSD-3-Clause
5*4a135bc3SAlexei Fedorov */
6*4a135bc3SAlexei Fedorov
7*4a135bc3SAlexei Fedorov #include <common/debug.h>
8*4a135bc3SAlexei Fedorov #include <common/fdt_wrappers.h>
9*4a135bc3SAlexei Fedorov
10*4a135bc3SAlexei Fedorov #include <libfdt.h>
11*4a135bc3SAlexei Fedorov #include <fconf_nt_config_getter.h>
12*4a135bc3SAlexei Fedorov
13*4a135bc3SAlexei Fedorov #include <plat/common/platform.h>
14*4a135bc3SAlexei Fedorov
15*4a135bc3SAlexei Fedorov struct event_log_config_t event_log_config;
16*4a135bc3SAlexei Fedorov
fconf_populate_event_log_config(uintptr_t config)17*4a135bc3SAlexei Fedorov int fconf_populate_event_log_config(uintptr_t config)
18*4a135bc3SAlexei Fedorov {
19*4a135bc3SAlexei Fedorov int err;
20*4a135bc3SAlexei Fedorov int node;
21*4a135bc3SAlexei Fedorov
22*4a135bc3SAlexei Fedorov /* Necessary to work with libfdt APIs */
23*4a135bc3SAlexei Fedorov const void *dtb = (const void *)config;
24*4a135bc3SAlexei Fedorov
25*4a135bc3SAlexei Fedorov /*
26*4a135bc3SAlexei Fedorov * Find the offset of the node containing "arm,tpm_event_log"
27*4a135bc3SAlexei Fedorov * compatible property
28*4a135bc3SAlexei Fedorov */
29*4a135bc3SAlexei Fedorov const char *compatible_str = "arm,tpm_event_log";
30*4a135bc3SAlexei Fedorov
31*4a135bc3SAlexei Fedorov node = fdt_node_offset_by_compatible(dtb, -1, compatible_str);
32*4a135bc3SAlexei Fedorov if (node < 0) {
33*4a135bc3SAlexei Fedorov ERROR("FCONF: Can't find '%s' compatible in dtb\n",
34*4a135bc3SAlexei Fedorov compatible_str);
35*4a135bc3SAlexei Fedorov return node;
36*4a135bc3SAlexei Fedorov }
37*4a135bc3SAlexei Fedorov
38*4a135bc3SAlexei Fedorov /* Retrieve Event Log details from the DTB */
39*4a135bc3SAlexei Fedorov #ifdef SPD_opteed
40*4a135bc3SAlexei Fedorov err = fdtw_read_cells(dtb, node, "tpm_event_log_sm_addr", 2,
41*4a135bc3SAlexei Fedorov &event_log_config.tpm_event_log_sm_addr);
42*4a135bc3SAlexei Fedorov if (err < 0) {
43*4a135bc3SAlexei Fedorov ERROR("FCONF: Read cell failed for 'tpm_event_log_sm_addr'\n");
44*4a135bc3SAlexei Fedorov return err;
45*4a135bc3SAlexei Fedorov }
46*4a135bc3SAlexei Fedorov #endif
47*4a135bc3SAlexei Fedorov err = fdtw_read_cells(dtb, node,
48*4a135bc3SAlexei Fedorov "tpm_event_log_addr", 2, &event_log_config.tpm_event_log_addr);
49*4a135bc3SAlexei Fedorov if (err < 0) {
50*4a135bc3SAlexei Fedorov ERROR("FCONF: Read cell failed for 'tpm_event_log_addr'\n");
51*4a135bc3SAlexei Fedorov return err;
52*4a135bc3SAlexei Fedorov }
53*4a135bc3SAlexei Fedorov
54*4a135bc3SAlexei Fedorov err = fdtw_read_cells(dtb, node,
55*4a135bc3SAlexei Fedorov "tpm_event_log_size", 1, &event_log_config.tpm_event_log_size);
56*4a135bc3SAlexei Fedorov if (err < 0) {
57*4a135bc3SAlexei Fedorov ERROR("FCONF: Read cell failed for 'tpm_event_log_size'\n");
58*4a135bc3SAlexei Fedorov }
59*4a135bc3SAlexei Fedorov
60*4a135bc3SAlexei Fedorov return err;
61*4a135bc3SAlexei Fedorov }
62*4a135bc3SAlexei Fedorov
63*4a135bc3SAlexei Fedorov FCONF_REGISTER_POPULATOR(NT_CONFIG, event_log_config,
64*4a135bc3SAlexei Fedorov fconf_populate_event_log_config);
65