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authorArthur Heymans <arthur@aheymans.xyz>2023-07-13 14:07:54 +0200
committerFelix Held <felix-coreboot@felixheld.de>2023-09-28 16:30:55 +0000
commit48167b18a52915f03fff4e8f30aefc48d0e78a97 (patch)
treeb2d803e763448acfd09c863fad20d08bc241b24f /src/soc/amd/genoa/include
parentc5c35ce238e2ce032db7bc5e0addba1c2d46ef53 (diff)
soc/amd/genoa: Add timer & tsc support
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Signed-off-by: Varshit Pandya <pandyavarshit@gmail.com> Change-Id: Ie1ae2ba4d4833570ca0621023bdeed67ccabe5cb Reviewed-on: https://review.coreboot.org/c/coreboot/+/76501 Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/genoa/include')
-rw-r--r--src/soc/amd/genoa/include/soc/msr.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/soc/amd/genoa/include/soc/msr.h b/src/soc/amd/genoa/include/soc/msr.h
new file mode 100644
index 0000000000..368c631d7d
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/msr.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_GENOA_MSR_H
+#define AMD_GENOA_MSR_H
+
+/* MSRC001_00[6B:64] P-state [7:0] bit definitions */
+union pstate_msr {
+ struct {
+ uint64_t cpu_fid_0_7 : 8; /* [ 0.. 7] */
+ uint64_t cpu_dfs_id : 6; /* [ 8..13] */
+ uint64_t cpu_vid_0_7 : 8; /* [14..21] */
+ uint64_t idd_value : 8; /* [22..29] */
+ uint64_t idd_div : 2; /* [30..31] */
+ uint64_t cpu_vid_8 : 1; /* [32..32] */
+ uint64_t : 30; /* [33..62] */
+ uint64_t pstate_en : 1; /* [63..63] */
+ };
+ uint64_t raw;
+};
+
+
+/* Value defined in Serial VID Interface 3.0 spec (#56413, NDA only) */
+#define MSR_CPPC_CAPABILITY_1 0xc00102b0
+#define SHIFT_CPPC_CAPABILITY_1_HIGHEST_PERF 24
+#define SHIFT_CPPC_CAPABILITY_1_NOMINAL_PERF 16
+#define SHIFT_CPPC_CAPABILITY_1_LOW_NON_LIN_PERF 8
+#define SHIFT_CPPC_CAPABILITY_1_LOWEST_PERF 0
+
+#define MSR_CPPC_ENABLE 0xc00102b1
+#define MSR_CPPC_REQUEST 0xc00102b3
+#define SHIFT_CPPC_REQUEST_ENERGY_PERF_PREF 24
+#define SHIFT_CPPC_REQUEST_DES_PERF 16
+#define SHIFT_CPPC_REQUEST_MIN_PERF 8
+#define SHIFT_CPPC_REQUEST_MAX_PERF 0
+
+#define MSR_CPPC_STATUS 0xc00102b4
+
+#define MSR_MAX_PERFORMANCE_FREQUENCY_CLOCK_COUNT 0xe7
+#define MSR_ACTUAL_PERFORMANCE_FREQUENCY_CLOCK_COUNT 0xe8
+
+#endif /* AMD_GENOA_MSR_H */