1*91f16700SchasingluluDTB binding for FCONF properties 2*91f16700Schasinglulu================================ 3*91f16700Schasinglulu 4*91f16700SchasingluluThis document describes the device tree format of |FCONF| properties. These 5*91f16700Schasingluluproperties are not related to a specific platform and can be queried from 6*91f16700Schasinglulucommon code. 7*91f16700Schasinglulu 8*91f16700SchasingluluDynamic configuration 9*91f16700Schasinglulu~~~~~~~~~~~~~~~~~~~~~ 10*91f16700Schasinglulu 11*91f16700SchasingluluThe |FCONF| framework expects a *dtb-registry* node with the following field: 12*91f16700Schasinglulu 13*91f16700Schasinglulu- compatible [mandatory] 14*91f16700Schasinglulu - value type: <string> 15*91f16700Schasinglulu - Must be the string "fconf,dyn_cfg-dtb_registry". 16*91f16700Schasinglulu 17*91f16700SchasingluluThen a list of subnodes representing a configuration |DTB|, which can be used 18*91f16700Schasingluluby |FCONF|. Each subnode should be named according to the information it 19*91f16700Schasinglulucontains, and must be formed with the following fields: 20*91f16700Schasinglulu 21*91f16700Schasinglulu- load-address [mandatory] 22*91f16700Schasinglulu - value type: <u64> 23*91f16700Schasinglulu - Physical loading base address of the configuration. 24*91f16700Schasinglulu If secondary-load-address is also provided (see below), then this is the 25*91f16700Schasinglulu primary load address. 26*91f16700Schasinglulu 27*91f16700Schasinglulu- max-size [mandatory] 28*91f16700Schasinglulu - value type: <u32> 29*91f16700Schasinglulu - Maximum size of the configuration. 30*91f16700Schasinglulu 31*91f16700Schasinglulu- id [mandatory] 32*91f16700Schasinglulu - value type: <u32> 33*91f16700Schasinglulu - Image ID of the configuration. 34*91f16700Schasinglulu 35*91f16700Schasinglulu- secondary-load-address [optional] 36*91f16700Schasinglulu - value type: <u64> 37*91f16700Schasinglulu - A platform uses this physical address to copy the configuration to 38*91f16700Schasinglulu another location during the boot-flow. 39*91f16700Schasinglulu 40*91f16700Schasinglulu-------------- 41*91f16700Schasinglulu 42*91f16700Schasinglulu*Copyright (c) 2023, Arm Limited and Contributors. All rights reserved.* 43