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