1#!/usr/bin/env python3 2# SPDX-License-Identifier: BSD-3-Clause 3# Copyright(c) 2017 Cavium, Inc 4 5ident = [] 6fname = '/sys/devices/system/cpu/cpu0/regs/identification/midr_el1' 7with open(fname) as f: 8 content = f.read() 9 10midr_el1 = (int(content.rstrip('\n'), 16)) 11 12ident.append(hex((midr_el1 >> 24) & 0xFF)) # Implementer 13ident.append(hex((midr_el1 >> 20) & 0xF)) # Variant 14ident.append(hex((midr_el1 >> 16) & 0XF)) # Architecture 15ident.append(hex((midr_el1 >> 4) & 0xFFF)) # Primary Part number 16ident.append(hex(midr_el1 & 0xF)) # Revision 17 18print(' '.join(ident)) 19