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