coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
msr.h
Go to the documentation of this file.
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 /* This file applies to AMD64 products.
4  * The definitions come from the device's PPR.
5  */
6 
7 #ifndef AMD_PICASSO_MSR_H
8 #define AMD_PICASSO_MSR_H
9 
10 /* MSRC001_00[6B:64] P-state [7:0] bit definitions */
11 #define PSTATE_DEF_HI_ENABLE_SHIFT 31
12 #define PSTATE_DEF_HI_ENABLE_MASK (0x1 << PSTATE_DEF_HI_ENABLE_SHIFT)
13 #define PSTATE_DEF_LO_CUR_DIV_SHIFT 30
14 #define PSTATE_DEF_LO_CUR_DIV_MASK (0x3 << PSTATE_DEF_LO_CUR_DIV_SHIFT)
15 #define PSTATE_DEF_LO_CUR_VAL_SHIFT 22
16 #define PSTATE_DEF_LO_CUR_VAL_MASK (0xFF << PSTATE_DEF_LO_CUR_VAL_SHIFT)
17 #define PSTATE_DEF_LO_CORE_VID_SHIFT 14
18 #define PSTATE_DEF_LO_CORE_VID_MASK (0xFF << PSTATE_DEF_LO_CORE_VID_SHIFT)
19 #define PSTATE_DEF_LO_FREQ_DIV_SHIFT 8
20 #define PSTATE_DEF_LO_FREQ_DIV_MASK (0x3F << PSTATE_DEF_LO_FREQ_DIV_SHIFT)
21 #define PSTATE_DEF_LO_FREQ_DIV_MIN 0x8
22 #define PSTATE_DEF_LO_EIGHTH_STEP_MAX 0x1A
23 #define PSTATE_DEF_LO_FREQ_DIV_MAX 0x3E
24 #define PSTATE_DEF_LO_FREQ_MUL_SHIFT 0
25 #define PSTATE_DEF_LO_FREQ_MUL_MASK (0xFF << PSTATE_DEF_LO_FREQ_MUL_SHIFT)
26 #define PSTATE_DEF_LO_CORE_FREQ_BASE 25
27 
28 #endif /* AMD_PICASSO_MSR_H */