diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2023-03-09 14:42:54 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-03-27 12:03:18 +0000 |
| commit | 25b5982d107b48642036c19c495364b72fed71ff (patch) | |
| tree | 0cd2ceaefd7ee2524fe559df03382f37f38f2de9 | |
| parent | ca8a8de999824bfae5b66b32a237246805ed857c (diff) | |
soc/amd/stoneyridge/include/msr: add pstate_msr bitfield struct
Add the pstate_msr union of a bitfield struct and a raw uint64_t to
allow easier access of the bitfields of the P state MSRs which will be
used in future patches to generate the P state ACPI packages for the CPU
objects. BKDG #55072 Rev 3.04 was used as a reference.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I944c8598ba95a0333124655c61ef9eba8a7595c9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73998
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/amd/stoneyridge/include/soc/msr.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/msr.h b/src/soc/amd/stoneyridge/include/soc/msr.h new file mode 100644 index 0000000000..d3c537ca28 --- /dev/null +++ b/src/soc/amd/stoneyridge/include/soc/msr.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef AMD_STONEYRIDGE_MSR_H +#define AMD_STONEYRIDGE_MSR_H + +/* MSRC001_00[6B:64] P-state [7:0] bit definitions */ +union pstate_msr { + struct { + uint64_t cpu_fid_0_5 : 6; /* [ 0.. 5] */ + uint64_t cpu_dfs_id : 3; /* [ 6.. 8] */ + uint64_t cpu_vid_0_7 : 8; /* [ 9..16] */ + uint64_t : 5; /* [17..21] */ + uint64_t nb_pstate : 1; /* [22..22] */ + uint64_t : 9; /* [23..31] */ + uint64_t idd_value : 8; /* [32..39] */ + uint64_t idd_div : 2; /* [40..41] */ + uint64_t : 21; /* [42..62] */ + uint64_t pstate_en : 1; /* [63..63] */ + }; + uint64_t raw; +}; + +#endif /* AMD_STONEYRIDGE_MSR_H */ |