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| author | Julian Schroeder <julianmarcusschroeder@gmail.com> | 2021-07-09 16:10:08 -0500 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-07-15 21:39:04 +0000 |
| commit | 577e146895d489d809b4d41da7f6f2d7428143a2 (patch) | |
| tree | 963579f26d4c4d179ad797c3ed1fb48f9b0048a6 /src/soc/amd/cezanne/include | |
| parent | 82e2f3229ea752f76deeba3b3c511a53906e6acc (diff) | |
| download | coreboot-577e146895d489d809b4d41da7f6f2d7428143a2.tar.gz coreboot-577e146895d489d809b4d41da7f6f2d7428143a2.tar.bz2 coreboot-577e146895d489d809b4d41da7f6f2d7428143a2.zip | |
soc/amd/cezanne: add ACPI CPPC support for AMD
This leverages the existing Collaborative Processor Performance Control
(CPPC) support and adds CPPC init for AMD/Cezanne.
BUG=b:185814875
TEST=under Linux/ChromeOS, acpidump ssdt2, find expected CPPC entries
Signed-off-by: Julian Schroeder <julianmarcusschroeder@gmail.com>
Change-Id: I94172f40c7fa4b7b89237fd382448e598da00fbb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56188
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/soc/amd/cezanne/include')
| -rw-r--r-- | src/soc/amd/cezanne/include/soc/cppc.h | 12 | ||||
| -rw-r--r-- | src/soc/amd/cezanne/include/soc/msr.h | 18 |
2 files changed, 30 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/include/soc/cppc.h b/src/soc/amd/cezanne/include/soc/cppc.h new file mode 100644 index 000000000000..60a5efd33417 --- /dev/null +++ b/src/soc/amd/cezanne/include/soc/cppc.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _CPU_AMD_COMMON_H +#define _CPU_AMD_COMMON_H + +#include <types.h> + +struct cppc_config; +void cpu_init_cppc_config(struct cppc_config *config, u32 version); +void generate_cppc_entries(unsigned int core_id); + +#endif diff --git a/src/soc/amd/cezanne/include/soc/msr.h b/src/soc/amd/cezanne/include/soc/msr.h index cc1f77e35b98..ca2992a1214d 100644 --- a/src/soc/amd/cezanne/include/soc/msr.h +++ b/src/soc/amd/cezanne/include/soc/msr.h @@ -21,4 +21,22 @@ #define PSTATE_DEF_LO_FREQ_MUL_MASK (0xFF << PSTATE_DEF_LO_FREQ_MUL_SHIFT) #define PSTATE_DEF_LO_CORE_FREQ_BASE 25 +#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_CEZANNE_MSR_H */ |