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author | Simon Glass <sjg@chromium.org> | 2016-03-11 22:06:58 -0700 |
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committer | Bin Meng <bmeng.cn@gmail.com> | 2016-03-17 10:27:24 +0800 |
commit | 50dd3da0042b4502bab622ef7f72f628b842cf26 (patch) | |
tree | 6ca8ff4c15c6ec456b0b44e743e04ef4b7b59a1f /arch/x86/include/asm/cpu_common.h | |
parent | 8c30b571303fffd06615aeeb3143112c7bb00f2a (diff) | |
download | u-boot-50dd3da0042b4502bab622ef7f72f628b842cf26.tar.gz u-boot-50dd3da0042b4502bab622ef7f72f628b842cf26.tar.xz u-boot-50dd3da0042b4502bab622ef7f72f628b842cf26.zip |
x86: Move common CPU code to its own place
Some of the Intel CPU code is common to several Intel CPUs. Move it into a
common location along with required declarations.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/include/asm/cpu_common.h')
-rw-r--r-- | arch/x86/include/asm/cpu_common.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu_common.h b/arch/x86/include/asm/cpu_common.h new file mode 100644 index 0000000000..562de3e27f --- /dev/null +++ b/arch/x86/include/asm/cpu_common.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2016 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __ASM_CPU_COMMON_H +#define __ASM_CPU_COMMON_H + +#define IA32_PERF_CTL 0x199 + +/** + * cpu_common_init() - Set up common CPU init + * + * This reports BIST failure, enables the LAPIC, updates microcode, enables + * the upper 128-bytes of CROM RAM, probes the northbridge, PCH, LPC and SATA. + * + * @return 0 if OK, -ve on error + */ +int cpu_common_init(void); + +/** + * cpu_set_flex_ratio_to_tdp_nominal() - Set up the maximum non-turbo rate + * + * If a change is needed, this function will do a soft reset so it takes + * effect. + * + * Some details are available here: + * http://forum.hwbot.org/showthread.php?t=76092 + * + * @return 0 if OK, -ve on error + */ +int cpu_set_flex_ratio_to_tdp_nominal(void); + +#endif |