The hwinfo area contains information about the hardware platform (type of bus, devices, IRQs, etc). This is filled in by the startup library's init_hwinfo() function.
This is one of the more elaborate sections of the Neutrino system page. The hwinfo section doesn't consist of a single structure or an array of the same type. Instead, it consists of a sequence of symbolically "tagged" structures that as a whole describe the hardware installed on the board. The following types and constants are all defined in the <hw/sysinfo.h> file.