1DTB binding for Event Log properties 2==================================== 3 4This document describes the device tree format of Event Log properties. 5These properties are not related to a specific platform and can be queried 6from common code. 7 8Dynamic configuration for Event Log 9~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 10 11Measured Boot driver expects a *tpm_event_log* node with the following field 12in 'nt_fw_config' and 'tsp_fw_config' DTS files: 13 14- compatible [mandatory] 15 - value type: <string> 16 - Must be the string "arm,tpm_event_log". 17 18Then a list of properties representing Event Log configuration, which 19can be used by Measured Boot driver. Each property is named according 20to the information it contains: 21 22- tpm_event_log_sm_addr [fvp_nt_fw_config.dts with OP-TEE] 23 - value type: <u64> 24 - Event Log base address in secure memory. 25 26Note. Currently OP-TEE does not support reading DTBs from Secure memory 27and this property should be removed when this feature is supported. 28 29- tpm_event_log_addr [mandatory] 30 - value type: <u64> 31 - Event Log base address in non-secure memory. 32 33- tpm_event_log_size [mandatory] 34 - value type: <u32> 35 - Event Log size. 36