1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2016 Google, Inc
6 #ifndef __ASM_CPU_COMMON_H
7 #define __ASM_CPU_COMMON_H
9 #define IA32_PERF_CTL 0x199
12 * cpu_common_init() - Set up common CPU init
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.
17 * @return 0 if OK, -ve on error
19 int cpu_common_init(void);
22 * cpu_set_flex_ratio_to_tdp_nominal() - Set up the maximum non-turbo rate
24 * If a change is needed, this function will do a soft reset so it takes
27 * Some details are available here:
28 * http://forum.hwbot.org/showthread.php?t=76092
30 * @return 0 if OK, -ve on error
32 int cpu_set_flex_ratio_to_tdp_nominal(void);