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| -rw-r--r-- | docs/components/fconf/fconf_properties.rst | 39 |
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diff --git a/docs/components/fconf/fconf_properties.rst b/docs/components/fconf/fconf_properties.rst new file mode 100644 index 0000000..20cc758 --- /dev/null +++ b/docs/components/fconf/fconf_properties.rst @@ -0,0 +1,39 @@ +DTB binding for FCONF properties +================================ + +This document describes the device tree format of |FCONF| properties. These +properties are not related to a specific platform and can be queried from +common code. + +Dynamic configuration +~~~~~~~~~~~~~~~~~~~~~ + +The |FCONF| framework expects a *dtb-registry* node with the following field: + +- compatible [mandatory] + - value type: <string> + - Must be the string "fconf,dyn_cfg-dtb_registry". + +Then a list of subnodes representing a configuration |DTB|, which can be used +by |FCONF|. Each subnode should be named according to the information it +contains, and must be formed with the following fields: + +- load-address [mandatory] + - value type: <u64> + - Physical loading base address of the configuration. + +- max-size [mandatory] + - value type: <u32> + - Maximum size of the configuration. + +- id [mandatory] + - value type: <u32> + - Image ID of the configuration. + +- ns-load-address [optional] + - value type: <u64> + - Physical loading base address of the configuration in the non-secure + memory. + Only needed by those configuration files which require being loaded + in secure memory (at load-address) as well as in non-secure memory + e.g. HW_CONFIG |