This change refactors MTRR handling by consolidating helper functions
from `earlymtrr.c` and `mtrr.c` into a new MTRR library (`mtrrlib`).
This approach improves code modularity and reusability, making these
utilities consistently available across different coreboot boot phases.
The following functions are now part of `mtrrlib`:
- `get_free_var_mtrr`: Retrieves the index of the first available
variable MTRR.
- `set_var_mtrr`: Configures the variable MTRR, specified by an `index`,
for a memory region defined by `base`, `size`, and `type`.
- `clear_var_mtrr`: Disables the variable MTRR at a given index.
- `acquire_and_configure_mtrr`: Acquires a free variable MTRR, configures
it with the given `base`, `size`, and `type`.
BUG=b:409718202
TEST=Built and booted google/fatcat successfully.
Change-Id: Iba332b7088221fd930e973fad9410833bff184b9
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87539
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Currently there are 3 GDTs (Global Descriptor Tables) being used on x86:
- preRAM (gdt_init.S)
- SMM (smm_stub.S)
- RAM (c_start.S)
They have different layouts and thus different offsets for the segments
being used in assembly code. Stop using different GDT segments and
ensure that for ROM (preRAM + SMM) and RAM (ramstage) the segments
match. RAM will have additional entries, not found in pre RAM GDT,
but the segments for protected mode and 64-bit mode now match in
all stages.
This allows to use the same defines in all stages. It also drops the
need to know in which stage the code is compiled and it's no longer
necessary to switch the code segment between stages.
While at it fix the comments in the ramstage GDT and drop unused
declarations from header files, always set the accessed bit and drop
GDT_CODE_ACPI_SEG.
Change-Id: I208496e6e4cc82833636f4f42503b44b0d702b9e
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87255
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
This patch adds Wildcat Lake-specific CPU and PCIe device IDs to the
header files and driver-specific code.
Reference:
Wildcat Lake Processor Prelim External Device IDs (820363)
BUG=b:394208231
TEST=Verified on Wildcat Lake Simulation Platform
Change-Id: I4bc7a8ea898ee30d565a95b9f85d6f19886bcffb
Signed-off-by: Appukuttan V K <appukuttan.vk@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87262
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This reverts commit 4b5a490b6f.
Reason for revert: This effort was apparently given up on since 4 years.
So remove the function, since it is not used at the moment. If someone
wants to bring that effort back to live, said person can feel free to do
so.
Change-Id: I26d5c9fbfd6eae24f876d857a6e952ca0d1a64ae
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87066
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
MSR definition in soc/amd/*/include/soc/msr.h are the same & hence move
them to common header src/include/cpu/amd/msr.h
Change-Id: Ic0cb54b13320f8a38e70c0a76d9b9a51ba0ea01d
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87124
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
AMD64 spec refers to the field as MT (Message Type), but the IA64 spec
refers to it as DM (Delivery Mode). The problem is that there is another
field abbreviated as DM (Destination Mode) right next to it. So for
better readability, just stick to the AMD64 terminology.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I25cf69d555fe22526f128ff7ed41f82b71f2acf2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86683
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Andy Ebrahiem <ahmet.ebrahiem@9elements.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
No need for this to be a signed or unsigned int.
TEST=tested with rest of patch train.
Change-Id: I409c04b928211e0e89eec324fdf3fa3997c73576
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86942
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Intel TXT requires the debug interface to be disabled. There is no
way to program the MSR_IA32_DEBUG_INTERFACE using FSP as needed, so
let coreboot handle it.
TEST=Boot Linux with tboot on Protectli VP4670 with Intel TXT enabled
Change-Id: I7ed4382bbe68f03e8eca151245c13928609f434f
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83730
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
This commit rewrites the CPU topology initialization code to simplify
it and make it more maintainable.
The previous code used a complex set of if-else statements to
initialize the CPU topology based on the CPUID leaves that were
supported. This has been replaced with a simpler and more readable
function that follows the Intel Software Developer Manual
recommendation by prioritizing CPUID EAX=0x1f over CPUID EAX=0xb if
available.
The new code removes the need for separate functions to handle the
topology initialization for different CPUID leaves. It uses a static
array of bitfield descriptors to store the APIC ID descriptor
information for each level of the CPU topology. This simplifies the
code and makes it easier to add new levels of topology in the future.
The code populates the node ID based on the package ID, eliminating
the need for an extra function call.
Change-Id: Ie9424559f895af69e79c36b919e80af803861148
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85576
Reviewed-by: Jincheng Li <jincheng.li@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
These header files do not seem to be used in coreboot. Presumably
they're left over after the code that used them was removed.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ide70239c7c2e93fff548d989735450396308c62b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85370
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
PRMRR (Protected Region Memory Range Region) are not accessible as
normal DRAM regions and needs to be explicitly reserved in memory
map.
Change-Id: I81d17b1376459510f7c0d43ba4b519b1f2bd3e1f
Signed-off-by: Gang Chen <gang.c.chen@intel.com>
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Signed-off-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84314
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Definitions of __fls/__ffs from lib.h and fms/fls from
cpu/x86/mtrr.h are duplicated. Use definition from lib.h which is
more generic.
Change-Id: Ic9c6f1027447b04627d7f21d777cbea142588093
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Suggested-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85104
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Both AGESA.h and cpu/amd/mtrr.h defined TOP_MEM and TOP_MEM2, but since
it was defined as unsigned long in AGESA.h, a workaround was needed in
cpu/amd/mtrr.h to not have the build fail due to a non-identical
redefinition of TOP_MEM and TOP_MEM2. Just removing the workaround
without reaming the defines isn't trivially possible, since the
stoneyridge romstage.c still ends up including both definitions which
can't be easily worked around. Now all non-vendorcode coreboot code uses
TOP_MEM_MSR and TOP_MEM2_MSR while the vendorcode part uses TOP_MEM and
TOP_MEM2 to avoid this.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ibad72dac17bd0b05734709d42c6802b7c8a87455
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74619
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
We introduce two new functions to create region objects. They allow us
to check for integer overflows (region_create_untrusted()) or assert
their absence (region_create()).
This fixes potential overflows in region_overlap() checks in SMI
handlers, where we would wrongfully report MMIO as *not* overlapping
SMRAM.
Also, two cases of strtol() in parse_region() (cbfstool), where the
results were implicitly converted to `size_t`, are replaced with the
unsigned strtoul().
FIT payload support is left out, as it doesn't use the region API
(only the struct).
Change-Id: I4ae3e6274c981c9ab4fb1263c2a72fa68ef1c32b
Ticket: https://ticket.coreboot.org/issues/522
Found-by: Vadim Zaliva <lord@digamma.ai>
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79905
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Code dealing with PAE can be used outside of memset_pae(). This change
extracts creation of identity mapped pagetables to init_pae_pagetables()
and mapping of single 2 MiB map to pae_map_2M_page(). Both functions are
exported in include/cpu/x86/pae.h to allow use outside of pgtbl.c.
MEMSET_PAE_* macros were renamed to PAE_* since they no longer apply
only to memset_pae().
Change-Id: I8aa80eb246ff0e77e1f51d71933d3d00ab75aaeb
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82249
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This function had roughly the same use (except PAT) as part of
memset_pae(), however the latter is able to make use of PAE and map
physical memory located above 4 GB. Remove paging_identity_map_addr()
to avoid semi-duplicated code.
The function has been unused since CB:26745.
Change-Id: I7a4ebd84a6f5d222c3b2c6c6e3d26d6464cf01b8
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82248
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This function isn't used anywhere. It probably wouldn't work with
current coreboot anyway, as it identity mapped lower 2GB of RAM, while
ramstage is run from CBMEM, which is usually just below top of memory.
It was last used in K8 code that is long gone.
Change-Id: I97e2830f381181d7f21ab5f6d4c544066c15b08c
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82247
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Details:
- Add support for new Lunar Lake MCH ID 0x6410
- Add new CPU id 0xb06d1
Reference:
Lunar Lake External Design Specification Volume 1 (734362)
TEST=Build, boot the system and verfiy MCH-ID prints in bootblock stage.
Below prints verified on Lunar Lake RVP board (lnlrvp).
[DEBUG] MCH: device id 6410 (rev 02) is LunarLake M
Change-Id: I976d7f269485633d835d204afa224736d71baaa8
Signed-off-by: Saurabh Mishra <mishra.saurabh@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81847
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
This removes the runtime SMI call to set up the communication buffer
for SMMSTORE in favor of setting this buffer up during the installation
of the smihandler.
The reason is that it's less code in the handler and a time costly SMI
is also avoided in ramstage.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I94dce77711f37f87033530f5ae48cb850a39341b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79738
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Currently the SRAT table only exposes one proximity group as
it uses the LAPIC node_id, which is always initialized to 0.
Use CPUID leaf 0x1f or 0xb to gather the node ID and fill it
to make sure that at least one proximity group for every socket
is advertised.
For now the SNC config isn't taken into account.
Change-Id: Ia3ed1e5923aa18ca7619b32cde491fdb4da0fa0d
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81515
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
To allow for more flexibility like generating page tables at runtime or
page tables that are part of the ramstage, add a parameter to
sipi_vector.S and smm_stub.S so that APs use the same page tables as the
BSP during their initialization.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I1250ea6f63c65228178ee66e06d988dadfcc2a37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80335
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Allow SMM to verify the list of provided PCI devices by comparing
the device and vendor ID for each PCI device.
Change-Id: I7086fa450fcb117ef8767c199c30462c1ab1e1b6
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80245
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Even though the return value from apm_control isn't checked at any of
its call sites, using the cb_err enum instead of an integer as return
type makes it clearer what the returned value means.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I07ced74cae915df52a9d439835b84237d51fdd11
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79835
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
The physical address size of the System-on-Chip (SoC) can be different
from the CPU physical address size. These two different physical
address sizes should be used for settings of their respective field.
For instance, the physical address size related to the CPU should be
used for MTRR programming while the physical address size of the SoC
should be used for MMIO resource allocation.
Typically, on Meteor Lake, the CPUs physical address size is 46 if TME
is disabled and 42 if TME is enabled but Meteor Lake SoC physical
address size is always 42. As a result, MTRRs should reflect the TME
status while coreboot MMIO resource allocator should always use
42 bits.
This commit introduces `SOC_PHYSICAL_ADDRESS_WIDTH' Kconfig to set the
physical address size of the SoC for those SoCs.
BUG=b:314886709
TEST=MTRR are aligned between coreboot and FSP
Change-Id: Icb76242718581357e5c62c2465690cf489cb1375
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79665
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
When the SMI transfer monitor (STM) is configured, get_save_state
returns an incorrect pointer to the cpu save state because the size
(rounded up to 0x100) of the processor System Management Mode (SMM)
descriptor needs to be subtracted out in this case.
This patch addresses the issue identified in CB:76601, which means
that SMMSTOREv2 now works with the STM.
Thanks to Jeremy Compostella for suggesting this version of the patch.
Resolves: https://ticket.coreboot.org/issues/511
Change-Id: I0233c6d13bdffb3853845ac6ef25c066deaab747
Signed-off-by: Eugene D. Myers <edmyers@cyberpackventures.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78889
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
The number of physical address bits and reserved address bits shouldn't
ever be negative, so change the return type of cpu_phys_address_size,
get_reserved_phys_addr_bits, and get_tme_keyid_bits from int to unsigned
int.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9e67db6bf0c38f743b50e7273449cc028de13a8c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78072
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
On Intel SoCs, if TME is supported, TME key ID bits are reserved and
should be subtracted from the maximum physical addresses available.
BUG=288978352
TEST=Verified that DMAR ACPI table `Host Address Width` field on rex
went from 45 to 41.
Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Change-Id: I9504a489782ab6ef8950a8631c269ed39c63f34d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
The prefix POSTCODE makes it clear that the macro is a post code.
Hence, replace related macros starting with POST to POSTCODE and
also replace every instance the macros are invoked with the new
name.
The files was changed by running the following bash script from the
top level directory.
header="src/soc/amd/common/block/include/amdblocks/post_codes.h \
src/include/cpu/intel/post_codes.h \
src/soc/intel/common/block/include/intelblocks/post_codes.h"
array=`grep -r "#define POST_" $header | \
tr '\t' ' ' | cut -d ":" -f 2 | cut -d " " -f 2`
for str in $array; do
splitstr=`echo $str | cut -d '_' -f2-`
grep -r $str src | cut -d ':' -f 1 | \
xargs sed -i'' -e "s/$str/POSTCODE_$splitstr/g"
done
Change-Id: Id2ca654126fc5b96e6b40d222bb636bbf39ab7ad
Signed-off-by: Yuchen He <yuchenhe126@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76044
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Add and use a define for the total number of P-state MSRs to avoid magic
constants in the code.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I37a89faa0f216790b3404fc03edc62408684cc24
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76546
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
CPUID is the same for Alder Lake and Raptor Lake S and HX variants.
To reduce the confusion and concerns how to name the macros, remove
the suffixes from macros and platform reporting strings. Thankfully
the stepping names are unique across mobile (P suffixed) and desktop
(S and HX suffixed) SKUs. Distinguishing the S from HX is possible via
host bridge PCI ID.
Change-Id: Ib08fb0923481541dd6f358cf60da44d90bd75ae2
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76203
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Crawford <tcrawford@system76.com>
Add PCI IDs, default VR values and power limits for Raptor Lake S
CPUs. Based on docs 639116 and 640555.
TEST=Tested on a MSI PRO Z690-A (ms7d25) with i9-13900K with Ubuntu
22.10 and LinuxBoot (Linux + u-root). Also tested on MSI PRO Z790-P
with i5-13600K (UEFI Payload) usign RPL-S IoT FSP and Ubuntu 22.04.
Change-Id: I767dd08a169a6af59188d9ecd73520b916f69155
Signed-off-by: Max Fritz <antischmock@googlemail.com>
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69798
Reviewed-by: Tim Crawford <tcrawford@system76.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Kopeć <michal.kopec@3mdeb.com>
Attempting to use X2APIC MSRs before the call to enable_lapic()
is made raises exception and double-faults.
Change-Id: Ib97889466af0fbe639bec2be730784acc015b525
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76194
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
This patch adds CPU ID for C0 stepping (aka QS).
DOC=#723567
TEST=Able to boot on C0 rvp (and rex) and get correct CPU Name in coreboot log.
Change-Id: I53e3b197f2a0090e178877c1eef783b41670ca83
Signed-off-by: Musse Abdullahi <musse.abdullahi@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76135
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
In case the secure memory encryption is enabled, some of the upper
usable address bits of the host can't be used any more. Bits 11..6 in
CPUID_EBX_MEM_ENCRYPT indicate how many of the address bits are taken
away from the usable address bits in the case the secure memory
encryption is enabled.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia810b0984972216095da2ad8f9c19e37684f2a2e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75623
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Since we now explicitly compile both ramstage and smihandler code
without floating point operations and associated registers we don't need
to save/restore floating point registers.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I180b9781bf5849111501ae8e9806554a7851c0da
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75317
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Move microcode load/unload to pre_mp_init and post_mp_init callbacks.
It allows to make sure that ucode is freed only if all APs updated
microcode.
BUG=b:278264488
TEST=Build and run with additional debug prints added
to confirm that data are correctly unmapped
Change-Id: I200d24df6157cc6d06bade34809faefea9f0090a
Signed-off-by: Grzegorz Bernacki <bernacki@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This patch refers and backport some of previous work from Linux Kernel
(https://lore.kernel.org/all/1561689337-19390-3-git-send-email-ricardo.
neri-calderon@linux.intel.com/T/#u) that optimizes the MTRR register
programming in multi-processor systems by relying on the CPUID
(self-snoop feature supported).
Refer to the details below:
Programming MTRR registers in multi-processor systems is a rather
lengthy process as it involves flushing caches. As a result, the
process may take a considerable amount of time. Furthermore, all
processors must program these registers serially.
`wbinvd` instruction is used to invalidate the cache line to ensure
that all modified data is written back to memory. All logical processors
are stopped from executing until after the write-back and invalidate
operation is completed.
The amount of time or cycles for WBINVD to complete will vary due to the
size of different cache hierarchies and other factors. As a consequence,
the use of the WBINVD instruction can have an impact on response time.
As per measurements, around 98% of the time needed by the procedure to
program MTRRs in multi-processor systems is spent flushing caches with
wbinvd(). As per the Section 11.11.8 of the Intel 64 and IA 32
Architectures Software Developer's Manual, it is not necessary to flush
caches if the CPU supports cache self-snooping (ss).
"Flush all caches using the WBINVD instructions. Note on a processor
that supports self-snooping, CPUID feature flag bit 27, this step is
unnecessary."
Thus, skipping the cache flushes can reduce by several tens of
milliseconds the time needed to complete the programming of the MTRR
registers:
Platform Before After
12-core (14 Threads) MeteorLake 35ms 1ms
BUG=b:260455826
TEST=Able to build and boot google/rex.
Change-Id: I83cac2b1e1707bbb1bc1bba82cf3073984e9768f
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75511
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Himanshu Sahdev <himanshu.sahdev@intel.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
This patch removes the wbinvd call preceding CR0.CD setting in
disable_cache() to improve the boot time performances. According to
some experimental measurements, the wbinvd execution takes between 1.6
up and 6 milliseconds to complete so it is preferable to call it only
when necessary.
According to Intel Software Developer Manual Vol 3.A - 12.5.3
Preventing Caching section there is no need to flush and invalidate
the cache before settings CR0.CD. The documented sequence consists in
setting CR0.CD and then call wbinvd.
We also could not find any extra requirements in the AMD64
Architecture Programmer’s Manual - Volume 2 - Memory System chapter.
This extra wbinvd in coreboot disable_cache() function does not seem
documented and looking into the history of the project got us all the
way back to original commit 8ca8d7665d ("- Initial checkin of the
freebios2 tree") from April 2003.
Even the original disable_cache() implementation (see below) is a bit
curious as the comment list two actions:
1. Disable cache cover by line 74, 75 and 77
2. Write back the cache and flush TLB - Line 78
But it does not provide any explanation for the wbinvd call line 76.
68 static inline void disable_cache(void)
69 {
70 unsigned int tmp;
71 /* Disable cache */
72 /* Write back the cache and flush TLB */
73 asm volatile (
74 "movl %%cr0, %0\n\t"
75 "orl $0x40000000, %0\n\t"
76 "wbinvd\n\t"
77 "movl %0, %%cr0\n\t"
78 "wbinvd\n\t"
79 :"=r" (tmp)
80 ::"memory");
81 }
BUG=b/260455826
TEST=Successful boot on Skolas and Rex board
Change-Id: I08c6486dc93c4d70cadc22a760d1b7e536e85bfa
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75474
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Himanshu Sahdev <himanshu.sahdev@intel.com>
Improve boot time performances by replacing the wbinvd instruction
with multiple clflush to ensure that the SIPI data is written back to
RAM.
According to some experimental measurements, the wbinvd execution
takes between 1.6 up and 6 milliseconds to complete. In the case of
the SIPI data, wbinvd unnecessarily flushes and invalidates the entire
cache. Indeed, the SIPI module is quite small (about 400 bytes) and
cflush'ing the associated cache lines is almost instantaneous,
typically less than 100 microseconds.
BUG=b/260455826
TEST=Successful boot on Skolas and Rex board
Change-Id: I0e00db8eaa6a3cb41bec3422572c8f2a9bec4057
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Suggested-by: Erin Park <erin.park@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75391
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
