1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2016 Google, Inc 4 */ 5 6 #ifndef __ASM_CPU_COMMON_H 7 #define __ASM_CPU_COMMON_H 8 9 #define IA32_PERF_CTL 0x199 10 11 /** 12 * cpu_common_init() - Set up common CPU init 13 * 14 * This reports BIST failure, enables the LAPIC, updates microcode, enables 15 * the upper 128-bytes of CROM RAM, probes the northbridge, PCH, LPC and SATA. 16 * 17 * @return 0 if OK, -ve on error 18 */ 19 int cpu_common_init(void); 20 21 /** 22 * cpu_set_flex_ratio_to_tdp_nominal() - Set up the maximum non-turbo rate 23 * 24 * If a change is needed, this function will do a soft reset so it takes 25 * effect. 26 * 27 * Some details are available here: 28 * http://forum.hwbot.org/showthread.php?t=76092 29 * 30 * @return 0 if OK, -ve on error 31 */ 32 int cpu_set_flex_ratio_to_tdp_nominal(void); 33 34 #endif 35