coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
msr.h
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef AMD_SABRINA_MSR_H
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#define AMD_SABRINA_MSR_H
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/* MSRC001_00[6B:64] P-state [7:0] bit definitions */
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#define PSTATE_DEF_HI_ENABLE_SHIFT 31
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#define PSTATE_DEF_HI_ENABLE_MASK (0x1 << PSTATE_DEF_HI_ENABLE_SHIFT)
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#define PSTATE_DEF_LO_CUR_DIV_SHIFT 30
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#define PSTATE_DEF_LO_CUR_DIV_MASK (0x3 << PSTATE_DEF_LO_CUR_DIV_SHIFT)
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#define PSTATE_DEF_LO_CUR_VAL_SHIFT 22
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#define PSTATE_DEF_LO_CUR_VAL_MASK (0xFF << PSTATE_DEF_LO_CUR_VAL_SHIFT)
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#define PSTATE_DEF_LO_CORE_VID_SHIFT 14
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#define PSTATE_DEF_LO_CORE_VID_MASK (0xFF << PSTATE_DEF_LO_CORE_VID_SHIFT)
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#define PSTATE_DEF_LO_FREQ_DIV_SHIFT 8
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#define PSTATE_DEF_LO_FREQ_DIV_MASK (0x3F << PSTATE_DEF_LO_FREQ_DIV_SHIFT)
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#define PSTATE_DEF_LO_FREQ_DIV_MIN 0x8
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#define PSTATE_DEF_LO_EIGHTH_STEP_MAX 0x1A
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#define PSTATE_DEF_LO_FREQ_DIV_MAX 0x3E
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#define PSTATE_DEF_LO_FREQ_MUL_SHIFT 0
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#define PSTATE_DEF_LO_FREQ_MUL_MASK (0xFF << PSTATE_DEF_LO_FREQ_MUL_SHIFT)
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#define PSTATE_DEF_LO_CORE_FREQ_BASE 25
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#define MSR_MAX_PERFORMANCE_FREQUENCY_CLOCK_COUNT 0xe7
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#define MSR_ACTUAL_PERFORMANCE_FREQUENCY_CLOCK_COUNT 0xe8
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#endif
/* AMD_SABRINA_MSR_H */
src
soc
amd
sabrina
include
soc
msr.h
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