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18739e2ccc
Intel chips have a turbo mode where they can run faster for a short period until they reach thermal limits. Add code to adjust and query this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
32 lines
528 B
C
32 lines
528 B
C
/*
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* From coreboot file of the same name
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*
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* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#ifndef _ASM_TURBO_H
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#define _ASM_TURBO_H
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#define CPUID_LEAF_PM 6
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#define PM_CAP_TURBO_MODE (1 << 1)
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#define MSR_IA32_MISC_ENABLES 0x1a0
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#define H_MISC_DISABLE_TURBO (1 << 6)
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enum {
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TURBO_UNKNOWN,
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TURBO_UNAVAILABLE,
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TURBO_DISABLED,
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TURBO_ENABLED,
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};
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/* Return current turbo state */
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int turbo_get_state(void);
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/* Enable turbo */
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void turbo_enable(void);
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#endif
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