The FADT data structure is zero-initialized in acpi_create_fadt which
then calls the SoC-specific acpi_fill_fadt function, therefore it's not
needed to assign 0 to the duty_offset and duty_width FADT field in
acpi_fill_fadt for all SoC except Stoneyridge.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ib63b24891d44298841153dfc500b030619e1a5ea
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73421
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Instead of adding the P-state number to the PSTATE_0_MSR number to get
the P-state MSR number for the rdmsr call, provide a macro that directly
calculates the MSR number for a given power state. Also drop the unused
PSTATE_[1..4]_MSR definitions which also didn't cover all P-state MSRs
available in the hardware.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: If85acf556efe82c209e1608e56c05f7a2a748403
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73323
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
The latency values in the _CST package override the values in the
p_lvl2_lat and p_lvl3_lat FADT fields. In Picasso, Cezanne, Mendocino,
Phoenix and Glinda generate_cpu_entries generates the _CST packages for
each CPU device. The coreboot code for Stoneyridge doesn't generate _CST
packages for the CPU objects, but those are provided via the PSTATE SSDT
binaryPI generates and agesa_write_acpi_tables gets and adds to the ACPI
tables. The AGESA reference code also sets those two FADT entries to the
equivalents of ACPI_FADT_C2_NOT_SUPPORTED and ACPI_FADT_C3_NOT_SUPPORTED
so this also matches the AGESA behavior.
From the ACPI 6.4 spec: "Values provided by the _CST object override
P_LVLx values in P_BLK and P_LVLx_LAT values in the FADT."
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I1116a3013576b18b6f521604d6b0a9d75b971e0b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73231
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
This is sort-of reverts commit cbf290c692 ("soc/amd/sabrina: drop
CPPC code"), since it turned out that the CPPC feature is supported
on Sabrina (now Mendocino) despite this being missing from the
documentation I looked at when writing the patch referenced above.
Since the CPPC ACPI code generation functionality has been moved to
common code, this isn't a direct revert.
BUG=b:237336330
TEST=None
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I1c059653eeae207d723c77e8a78b19c86e362296
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66401
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
'Mendocino' was an embargoed name and could previously not be used
in references to Skyrim. coreboot has references to sabrina both
in directory structure and in files. This will make life difficult
for people looking for Mendocino support in the long term. The code
name should be replaced with "mendocino".
BUG=b:239072117
TEST=Builds
Cq-Depend: chromium:3764023
Cq-Depend: chromium:3763392
Cq-Depend: chrome-internal:4876777
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I2d0f76fde07a209a79f7e1596cc8064e53f06ada
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
