diff options
Diffstat (limited to 'plat/arm/board/fvp/fconf/fconf_nt_config_getter.c')
-rw-r--r-- | plat/arm/board/fvp/fconf/fconf_nt_config_getter.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/plat/arm/board/fvp/fconf/fconf_nt_config_getter.c b/plat/arm/board/fvp/fconf/fconf_nt_config_getter.c new file mode 100644 index 0000000..e258015 --- /dev/null +++ b/plat/arm/board/fvp/fconf/fconf_nt_config_getter.c @@ -0,0 +1,64 @@ +/* + * 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); |