Alexei Fedorov | 61369a2 | 2020-07-13 14:59:02 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2020, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <common/debug.h> |
| 8 | #include <common/fdt_wrappers.h> |
| 9 | |
| 10 | #include <libfdt.h> |
| 11 | #include <fconf_nt_config_getter.h> |
| 12 | |
| 13 | #include <plat/common/platform.h> |
| 14 | |
| 15 | struct event_log_config_t event_log_config; |
| 16 | |
| 17 | int fconf_populate_event_log_config(uintptr_t config) |
| 18 | { |
| 19 | int err; |
| 20 | int node; |
| 21 | |
| 22 | /* Necessary to work with libfdt APIs */ |
| 23 | const void *dtb = (const void *)config; |
| 24 | |
| 25 | /* |
| 26 | * Find the offset of the node containing "arm,tpm_event_log" |
| 27 | * compatible property |
| 28 | */ |
| 29 | const char *compatible_str = "arm,tpm_event_log"; |
| 30 | |
| 31 | node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); |
| 32 | if (node < 0) { |
| 33 | ERROR("FCONF: Can't find '%s' compatible in dtb\n", |
| 34 | compatible_str); |
| 35 | return node; |
| 36 | } |
| 37 | |
| 38 | /* Retrieve Event Log details from the DTB */ |
| 39 | #ifdef SPD_opteed |
| 40 | err = fdtw_read_cells(dtb, node, "tpm_event_log_sm_addr", 2, |
| 41 | &event_log_config.tpm_event_log_sm_addr); |
| 42 | if (err < 0) { |
| 43 | ERROR("FCONF: Read cell failed for 'tpm_event_log_sm_addr'\n"); |
| 44 | return err; |
| 45 | } |
| 46 | #endif |
| 47 | err = fdtw_read_cells(dtb, node, |
| 48 | "tpm_event_log_addr", 2, &event_log_config.tpm_event_log_addr); |
| 49 | if (err < 0) { |
| 50 | ERROR("FCONF: Read cell failed for 'tpm_event_log_addr'\n"); |
| 51 | return err; |
| 52 | } |
| 53 | |
| 54 | err = fdtw_read_cells(dtb, node, |
| 55 | "tpm_event_log_size", 1, &event_log_config.tpm_event_log_size); |
| 56 | if (err < 0) { |
| 57 | ERROR("FCONF: Read cell failed for 'tpm_event_log_size'\n"); |
| 58 | } |
| 59 | |
| 60 | return err; |
| 61 | } |
| 62 | |
| 63 | FCONF_REGISTER_POPULATOR(NT_CONFIG, event_log_config, |
| 64 | fconf_populate_event_log_config); |