CPUID

Low-level CPU ID peripheral driver. More...

Detailed Description

Low-level CPU ID peripheral driver.

Provides access the CPU's serial number

Note

This is distinct from what is called CPUID in ARM CPUs (which only covers variation down to silicon revisions, not down to individual instances of a CPU).

(Low-) Power Implications

The implementation should make sure, that calling cpuid_get() does not introduce any long-term power usage penalties. If e.g. some peripheral has to be powered on for the CPU ID to be read, the implementation should take care to disable the peripheral again after the read is finished.

Files
file	cpuid.h
	Low-level CPUID peripheral driver interface definitions.

Functions
void	cpuid_get (void *id)
	Gets the serial number of the CPU.

Function Documentation

cpuid_get()

void cpuid_get

(

void *

id

)

Gets the serial number of the CPU.

Parameters

[out]

id

The serial number of the CPU of length CPUID_LEN (must be defined in the CPU's cpu_conf.h)