diff options
| author | Michael Niewöhner <foss@mniewoehner.de> | 2020-10-14 19:17:35 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-10-26 06:52:08 +0000 |
| commit | e874b1c1794406aa9adcd00a06cdb713b50b88ff (patch) | |
| tree | c40ca4883c18bc90f0ab05797ff701f90fd9a34a /src/cpu/intel/common | |
| parent | 6f1754d090e79f6e4d06780a494b62a83a5d8fcc (diff) | |
cpu/intel/common: implement the two missing CPPC v2 autonomous registers
This implements the two missing registers for the CPPC Hardware
Autonomous mode (HWP) to the CPPC v2 package.
The right values can be determined via Intel SDM and the ACPI 6.3 spec.
Test: dumped SSDT from Supermicro X11SSM-F and checked decompiled
version
Change-Id: I7e2f4e4ae6a0fdb57204538bd62ead97cb540e91
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Matt Delco <delco@chromium.org>
Diffstat (limited to 'src/cpu/intel/common')
| -rw-r--r-- | src/cpu/intel/common/common_init.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/cpu/intel/common/common_init.c b/src/cpu/intel/common/common_init.c index d0b66d4815..3ea8f36ea8 100644 --- a/src/cpu/intel/common/common_init.c +++ b/src/cpu/intel/common/common_init.c @@ -239,11 +239,23 @@ void cpu_init_cppc_config(struct cppc_config *config, u32 version) if (version >= 2) { /* Autonomous Selection Enable is populated below */ - /* Autonomous Activity Window Register */ - config->regs[CPPC_AUTO_ACTIVITY_WINDOW] = unsupported; + msr.addrl = IA32_HWP_REQUEST; - /* Energy Performance Preference Register */ - config->regs[CPPC_PERF_PREF] = unsupported; + /* + * Autonomous Activity Window Register + * ResourceTemplate(){Register(FFixedHW, 0x0a, 0x20, 0x774, 0x04,)}, + */ + msr.bit_width = 10; + msr.bit_offset = 32; + config->regs[CPPC_AUTO_ACTIVITY_WINDOW] = msr; + + /* + * Autonomous Energy Performance Preference Register + * ResourceTemplate(){Register(FFixedHW, 0x08, 0x18, 0x774, 0x04,)}, + */ + msr.bit_width = 8; + msr.bit_offset = 24; + config->regs[CPPC_PERF_PREF] = msr; /* Reference Performance */ config->regs[CPPC_REF_PERF] = unsupported; |