Instead of implementing the conversion from the raw serial voltage ID
value to the voltage in microvolts in every SoC, introduce the
SOC_AMD_COMMON_BLOCK_SVI[2,3] Kconfig options for the SoC to select the
correct version, implement get_uvolts_from_vid for both cases and only
include the selected implementation in the build.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I344641217e6e4654fd281d434b88e346e0482f57
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73995
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Picasso and Cezanne use the serial voltage ID 2 standard to communicate
the CPU voltage to the voltage regulator module on the mainboard, while
Mendocino, Phoenix and Glinda use the serial voltage ID 3 standard for
this. Both standards encode the voltage in a different way, so add the
serial VID version number to the defines to clarify for which version
the define is.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I8ddab8df27c86dc2c70a6dfb47908d9405d86240
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73994
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Since we already have and use the pstate_msr union in get_pstate_info,
also pass it directly to the get_pstate_core_freq and
get_pstate_core_power function calls avoids having to sort-of convert
the msr_t type parameter in the implementations of those two functions.
In amdblocks/cpu.h a forward declaration of the pstate_msr union is used
since soc/msr.h doesn't exist in the two pre-Zen SoCs that also include
amdblocks/cpu.h.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I112030a15211587ccdc949807d1a1d552fe662b4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73926
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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
implemented in a following patch. PPR #57254 Rev 1.52 was used as a
reference. This patch adds and uses the cpu_vid_8 bit which is the 9th
bit of the voltage ID specified in the SVI3 spec. The way the CPU
frequency is encoded in the PSTATE MSR has changed compared to Phoenix,
so also update the comment in the SoC's Kconfig file that the selected
SOC_AMD_COMMON_BLOCK_TSC_FAM17H_19H is likely incompatible which will be
addressed in the future.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I3d1878ce4d9bc62ac597e6f71ef9630491628698
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73924
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
The implementations of get_pstate_info of Picasso, Cezanne, Mendocino,
Phoenix and Glinda are identical, so factor it out and move it to the
common AMD SoC code. The SoC-specific get_pstate_core_freq and
get_pstate_core_power functions remain in the SoC-specific code.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ibe0494f1747f381a75b3dd71a8cc38fdc6dce042
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73505
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
With the exception of the generate_cppc_entries call, the
implementations of generate_cpu_entries of Picasso, Cezanne, Mendocino,
Phoenix and Glinda are identical, so factor it out and move it to the
common AMD SoC code. Since all SoCs that support CPPC already select the
SOC_AMD_COMMON_BLOCK_ACPI_CPPC Kconfig option, this can be used to only
call generate_cppc_entries for platforms where it is available.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I71323d9d071b6f9d82852479b60dc56c24f2b9ec
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73504
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Rework the way the C state info is generated before it gets passed to
acpigen_write_CST_package in generate_cpu_entries by separating the data
from the code. For this, the newly introduced common get_cstate_info
function is used. Separating the data from the code will eventually
allow moving generate_cpu_entries to the common AMD code.
The actual values in cstate_cfg_table haven't been checked against the
reference code yet.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I5157fc031c5b19d8633132222520f582620208c9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73503
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
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>
