/* * Copyright (c) 2020, Arm Limited. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #include <common/debug.h> #include <common/fdt_wrappers.h> #include <libfdt.h> #include <fconf_nt_config_getter.h> #include <plat/common/platform.h> struct event_log_config_t event_log_config; int fconf_populate_event_log_config(uintptr_t config) { int err; int node; /* Necessary to work with libfdt APIs */ const void *dtb = (const void *)config; /* * Find the offset of the node containing "arm,tpm_event_log" * compatible property */ const char *compatible_str = "arm,tpm_event_log"; node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); if (node < 0) { ERROR("FCONF: Can't find '%s' compatible in dtb\n", compatible_str); return node; } /* Retrieve Event Log details from the DTB */ #ifdef SPD_opteed err = fdtw_read_cells(dtb, node, "tpm_event_log_sm_addr", 2, &event_log_config.tpm_event_log_sm_addr); if (err < 0) { ERROR("FCONF: Read cell failed for 'tpm_event_log_sm_addr'\n"); return err; } #endif err = fdtw_read_cells(dtb, node, "tpm_event_log_addr", 2, &event_log_config.tpm_event_log_addr); if (err < 0) { ERROR("FCONF: Read cell failed for 'tpm_event_log_addr'\n"); return err; } err = fdtw_read_cells(dtb, node, "tpm_event_log_size", 1, &event_log_config.tpm_event_log_size); if (err < 0) { ERROR("FCONF: Read cell failed for 'tpm_event_log_size'\n"); } return err; } FCONF_REGISTER_POPULATOR(NT_CONFIG, event_log_config, fconf_populate_event_log_config);