Cold Reset is signaled during the power-up sequence under hardware control. This section details the sources, effects, and characteristics of a HyperTransport cold reset.
Sources of Cold Reset
In addition to the hardware generation of cold reset during the powerup sequence, platform developers may also provide hooks for generating cold reset under software control. An optional method of generating a HyperTransport cold reset is defined by the specification for the secondary bus of a HT-to-HT bridge (discussed on page 278). However, software generation of cold reset for the secondary side of the Host-to-HT bridge can be implementation specific.
Resetting the Primary HT Bus
Some implementation-specific mechanism must be defined to initiate ...