goto out;
}
+ efi_tpm_final_log_size -= log_tbl->final_events_preboot_size;
+
tmp = krealloc(log->bios_event_log,
log_size + efi_tpm_final_log_size,
GFP_KERNEL);
}
log->bios_event_log = tmp;
+
+ /*
+ * Copy any of the final events log that didn't also end up in the
+ * main log. Events can be logged in both if events are generated
+ * between GetEventLog() and ExitBootServices().
+ */
memcpy((void *)log->bios_event_log + log_size,
- final_tbl->events, efi_tpm_final_log_size);
+ final_tbl->events + log_tbl->final_events_preboot_size,
+ efi_tpm_final_log_size);
log->bios_event_log_end = log->bios_event_log +
log_size + efi_tpm_final_log_size;
efi_status_t status;
efi_physical_addr_t log_location = 0, log_last_entry = 0;
struct linux_efi_tpm_eventlog *log_tbl = NULL;
+ struct efi_tcg2_final_events_table *final_events_table;
unsigned long first_entry_addr, last_entry_addr;
size_t log_size, last_entry_size;
efi_bool_t truncated;
int version = EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
void *tcg2_protocol = NULL;
+ int final_events_size = 0;
status = efi_call_early(locate_protocol, &tcg2_guid, NULL,
&tcg2_protocol);
return;
}
+ /*
+ * Figure out whether any events have already been logged to the
+ * final events structure, and if so how much space they take up
+ */
+ final_events_table = get_efi_config_table(sys_table_arg,
+ LINUX_EFI_TPM_FINAL_LOG_GUID);
+ if (final_events_table && final_events_table->nr_events) {
+ struct tcg_pcr_event2_head *header;
+ int offset;
+ void *data;
+ int event_size;
+ int i = final_events_table->nr_events;
+
+ data = (void *)final_events_table;
+ offset = sizeof(final_events_table->version) +
+ sizeof(final_events_table->nr_events);
+
+ while (i > 0) {
+ header = data + offset + final_events_size;
+ event_size = __calc_tpm2_event_size(header,
+ (void *)(long)log_location,
+ false);
+ final_events_size += event_size;
+ i--;
+ }
+ }
+
memset(log_tbl, 0, sizeof(*log_tbl) + log_size);
log_tbl->size = log_size;
+ log_tbl->final_events_preboot_size = final_events_size;
log_tbl->version = version;
memcpy(log_tbl->log, (void *) first_entry_addr, log_size);