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2 This document is copied from OPAL firmware
12 This device tree binding describes CPU features available to software, with
15 More general description of design and implementation of this binding is
28 It is implemented as a child of the node "/cpus", but this must not be
40 This compatibility refers to backwards compatibility of the overall
41 design with parsers that behave according to these guidelines. This can
50 isa that the CPU is currently running in. This provides instruction set
104 This property describes the privilege levels and/or software components
118 This property describes the HV privilege support required to enable the
123 this feature.
126 the feature may be enabled by setting this bit in the HFSCR register.
137 This property describes the OS privilege support required to enable the
142 for this feature.
145 the feature may be enabled by setting this bit in the FSCR register.
153 This property exists when the hv-support property HFSCR bit is set. This
155 hypervisor must set in order to enable this feature.
157 This property also exists if an HFSCR bit corresponds with this feature.
158 This makes CPU feature parsing slightly simpler.
166 This property exists when the os-support property FSCR bit is set. This
168 operating system must set in order to enable this feature.
170 This property also exists if an FSCR bit corresponds with this feature.
171 This makes CPU feature parsing slightly simpler.
179 This property may exist when the usable-privilege property value has PR bit set.
180 This property describes the bit number that should be set in the ELF AUX
181 hardware capability vectors in order to advertise this feature to userspace.
188 Some properties representing features created before this binding are
190 this bit. Operating system will handle those bits specifically. All new
199 If this property exists then it is a list of phandles to cpu feature
200 nodes that must be enabled for this feature to be enabled.