Xeon-SP Skylake Scalable Processor can have 36 CPU threads (18 cores).
Current coreboot SMM is unable to handle more than ~32 CPU threads.
This patch introduces a version 2 of the SMM module loader which
addresses this problem. Having two versions of the SMM module loader
prevents any issues to current projects. Future Xeon-SP products will
be using this version of the SMM loader. Subsequent patches will
enable board specific functionality for Xeon-SP.
The reason for moving to version 2 is the state save area begins to
encroach upon the SMI handling code when more than 32 CPU threads are
in the system. This can cause system hangs, reboots, etc. The second
change is related to staggered entry points with simple near jumps. In
the current loader, near jumps will not work because the CPU is jumping
within the same code segment. In version 2, "far" address jumps are
necessary therefore protected mode must be enabled first. The SMM
layout and how the CPUs are staggered are documented in the code.
By making the modifications above, this allows the smm module loader to
expand easily as more CPU threads are added.
TEST=build for Tiogapass platform under OCP mainboard. Enable the
following in Kconfig.
select CPU_INTEL_COMMON_SMM
select SOC_INTEL_COMMON_BLOCK_SMM
select SMM_TSEG
select HAVE_SMI_HANDLER
select ACPI_INTEL_HARDWARE_SLEEP_VALUES
Debug console will show all 36 cores relocated. Further tested by
generating SMI's to port 0xb2 using XDP/ITP HW debugger and ensured all
cores entering and exiting SMM properly. In addition, booted to Linux
5.4 kernel and observed no issues during mp init.
Change-Id: I00a23a5f2a46110536c344254868390dbb71854c
Signed-off-by: Rocky Phagura <rphagura@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43684
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Stefan thinks they don't add value.
Command used:
sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool)
The exceptions are for:
- crossgcc (patch file)
- gcov (imported from gcc)
- elf.h (imported from GNU's libc)
- nvramtool (more complicated header)
The removed lines are:
- fmt.Fprintln(f, "/* This file is part of the coreboot project. */")
-# This file is part of a set of unofficial pre-commit hooks available
-/* This file is part of coreboot */
-# This file is part of msrtool.
-/* This file is part of msrtool. */
- * This file is part of ncurses, designed to be appended after curses.h.in
-/* This file is part of pgtblgen. */
- * This file is part of the coreboot project.
- /* This file is part of the coreboot project. */
-# This file is part of the coreboot project.
-# This file is part of the coreboot project.
-## This file is part of the coreboot project.
--- This file is part of the coreboot project.
-/* This file is part of the coreboot project */
-/* This file is part of the coreboot project. */
-;## This file is part of the coreboot project.
-# This file is part of the coreboot project. It originated in the
- * This file is part of the coreinfo project.
-## This file is part of the coreinfo project.
- * This file is part of the depthcharge project.
-/* This file is part of the depthcharge project. */
-/* This file is part of the ectool project. */
- * This file is part of the GNU C Library.
- * This file is part of the libpayload project.
-## This file is part of the libpayload project.
-/* This file is part of the Linux kernel. */
-## This file is part of the superiotool project.
-/* This file is part of the superiotool project */
-/* This file is part of uio_usbdebug */
Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Done with sed and God Lines. Only done for C-like code for now.
Change-Id: I2adf28d805fe248d55a9514f74c38280c0ad9a78
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40049
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
The is_smm_enabled is not necessary because it is done previously
in this code path.
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Change-Id: I20d50acbea891cb56ad49edc128df25d21c5f1ca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38820
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Initial testing of STM support revealed a sizing issue for greater than 4 threads.
This patch reduces the STM smm_save_state_size, which should allow for 24 threads.
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Change-Id: I025694185469577e072a92ea75cbbb53c24b2c24
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38819
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The STM support aligns the smm_save_state_size. However, this creates
issue for some platforms because of this value being hard coded to
0x400
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Change-Id: Ia584f7e9b86405a12eb6cbedc3a2615a8727f69e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38734
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This update is a combination of all four of the patches so that the
commit can be done without breaking parts of coreboot. This possible
breakage is because of the cross-dependencies between the original
separate patches would cause failure because of data structure changes.
security/intel/stm
This directory contains the functions that check and move the STM to the
MSEG, create its page tables, and create the BIOS resource list.
The STM page tables is a six page region located in the MSEG and are
pointed to by the CR3 Offset field in the MSEG header. The initial
page tables will identity map all memory between 0-4G. The STM starts
in IA32e mode, which requires page tables to exist at startup.
The BIOS resource list defines the resources that the SMI Handler is
allowed to access. This includes the SMM memory area where the SMI
handler resides and other resources such as I/O devices. The STM uses
the BIOS resource list to restrict the SMI handler's accesses.
The BIOS resource list is currently located in the same area as the
SMI handler. This location is shown in the comment section before
smm_load_module in smm_module_loader.c
Note: The files within security/intel/stm come directly from their
Tianocore counterparts. Unnecessary code has been removed and the
remaining code has been converted to meet coreboot coding requirements.
For more information see:
SMI Transfer Monitor (STM) User Guide, Intel Corp.,
August 2015, Rev 1.0, can be found at firmware.intel.com
include/cpu/x86:
Addtions to include/cpu/x86 for STM support.
cpu/x86:
STM Set up - The STM needs to be loaded into the MSEG during BIOS
initialization and the SMM Monitor Control MSR be set to indicate
that an STM is in the system.
cpu/x86/smm:
SMI module loader modifications needed to set up the
SMM descriptors used by the STM during its initialization
Change-Id: If4adcd92c341162630ce1ec357ffcf8a135785ec
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33234
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: ron minnich <rminnich@gmail.com>
The current MP init timeout is hardcoded as 1s. To support
platform with many cpus, the timeout needs to be adjusted.
The number of cpus is calculated as:
number of sockets * number of cores per socket *
number of threads per core
How long the timeout should be set to, is heuristic.
It needs to be set long enough to ensure reboot stability,
but not unreasonable so that real failures can be detected
soon enough, especially for smaller systems.
This patch sets timeout to be minimum as 1 second, while each
cpu adds 0.1 second.
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Reddy Chagam <anjaneya.chagam@intel.com>
Change-Id: Ibc079fc6aa8641d4ac8d8e726899b6c8d055052e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38546
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
As discussed on the mailing list and voted upon, the coreboot project
is going to move the majority of copyrights out of the headers and into
an AUTHORS file. This will happen a bit at a time, as we'll be unifying
license headers at the same time.
Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Id6070fb586896653a1e44951a6af8f42f93b5a7b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35184
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Some timeouts given were too small when serial console is enabled due to
its spinlock making code runtime worse with every AP present.
In addition we usually don't know how long specific code runs and how
long ago it was sent to the APs.
Remove the timeout argument from mp_run_on_all_cpus and instead wait up
to 1 second, to prevent possible crashing of secondary APs still
processing the old job.
Tested on Supermicro X11SSH-TF.
Change-Id: I456be647b159f7a2ea7d94986a24424e56dcc8c4
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
The common code adheres to the Intel requirement of bringing up the
cores with INIT SIPI SIPI. This sequence is tolerated on some AMD
AMD CPUs but fails on others. Add a way to skip the second SIPI.
TEST=Mock up on grunt and verify no errors
BUG=b:138919564
Change-Id: I201869003ddc7d04d332cd5734ac6d63979d89e0
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34759
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Previously cpu_index() always succeeded, but since commit 095c931
(src/arch/x86: Use core apic id to get cpu_index()) it is now possible
for it to indicate an error by returning -1. This commit adds error
handling for all calls to cpu_index(), and restores several checks that
were removed in commit 7c712bb (Fix code that would trip -Wtype-limits)
but are now needed.
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Change-Id: I5436eed4cb5675f916924eb9670db04592a8b927
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32795
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This patch renames mp_get_apic_id() to cpu_get_apic_id() and
add_cpu_map_entry() to cpu_add_map_entry() in order access it
outside CONFIG_PARALLEL_MP kconfig scope.
Also make below changes
- Make cpu_add_map_entry() function available externally to call
it from mp_init.c and lapic_cpu_init.c.
BRANCH=none
BUG=b:79562868
Change-Id: I6a6c85df055bc0b5fc8c850cfa04d50859067088
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Drop 'include <string.h>' when it is not used and
add it when it is missing.
Also extra lines removed, or added just before local includes.
Change-Id: Iccac4dbaa2dd4144fc347af36ecfc9747da3de20
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31966
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This patch is a raw application of
find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g'
Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
When rmodule is loaded CPU stack alignment is only guaranteed
to 4kiB. Implementation of cpu_info() requires that each
CPU sees its stack aligned to CONFIG_STACK_SIZE.
Add one spare CPU for the stack reserve, such that alignment can
be enforced runtime.
Change-Id: Ie04956c64df0dc7bb156002d3d4f2629f92b340e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/26302
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This function returns APIC id for respective cpu core.
BUG=b:74436746
BRANCH=none
TEST=mp_get_apic_id() can be accessed in other files now.
Change-Id: I5c5eda8325f941ab84d8a3fe0dae64be71c44855
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/25620
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
A stack overrun has been observed on AMD64 CPUs during the SMM module
relocation process. Change the assumed required size from equaling the
save structure's size to a Kconfig symbol.
A value of 0x400 doubles the size used by AMD64 systems and maintains
the size used by EM64T.
BUG=b:118420852
TEST=S3 on Grunt and verify 0x2f000-0x30000 uncorrupted
Change-Id: Ib1d590ee4afb06ca649afd6ad253cdfd969ae777
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/29277
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Its spreading copies got out of sync. And as it is not a standard header
but used in commonlib code, it belongs into commonlib. While we are at
it, always include it via GCC's `-include` switch.
Some Windows and BSD quirk handling went into the util copies. We always
guard from redefinitions now to prevent further issues.
Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Within procedure save_bsp_msrs, the structure pointer "msr_entry" is updated
every time procedure save_msr() is called. However, after the last call of
save_msr(), "msr_entry" is not used, thus causing a static analysis error.
Add a "(void)msr_entry;" at the end to avoid the static analysis error.
BUG=b:112253891
TEST=Build and boot grunt.
Change-Id: If0fb336fbf49eec3da255fadbe38b3a38768d0cf
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/27956
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
In procedure allocate_cpu_devices(), if structure pointer new is null skip
using the pointer. Add a "continue;" to skip using the pointer.
The issue was found by static analysis tool.
BUG=b:112253891
TEST=Build and boot grunt.
Change-Id: I7011fbfa0725f22a6dfbca6752e668eddac3463c
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/27951
Reviewed-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Stoneyridge is running into a stack overflow in the SMM handler.
BUG=b:80539294
TEST=built on grunt
Change-Id: I94e385497bd93c3638c69fb08d9b843c3bbb55ce
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/27034
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Name the CPU device structure as per processor brand string.
Before logs use to look like:
APIC: 01 (unknown)
Now logs looks like(depending on CPU on which it is tested):
APIC: 01 (Intel(R) Core(TM) m3-7Y30 CPU @ 1.00GHz)
BUG=None
BRANCH=None
TEST= Build & boot Soraka.
Change-Id: I6af0e29bbbdb59406baeae32f7874ff9036a9c81
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/26740
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch ensures that user can select a specific AP to run
a function.
BUG=b:74436746
BRANCH=none
TEST=Able to run functions over APs with argument.
Change-Id: Iff2f34900ce2a96ef6ff0779b651f25ebfc739ad
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26034
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch ensures that user can pass a function with given argument
list to execute over APs.
BUG=b:74436746
BRANCH=none
TEST=Able to run functions over APs with argument.
Change-Id: I668b36752f6b21cb99cd1416c385d53e96117213
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/25725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
In order to extend the MP callback infrastructure prepare for
easier changes by making the AP callback get signalled by a
single pointer to a local variable on the signaller's stack.
When the APs see the callback they will copy the structure
to a local variable and then set the acknowledgement by
clearing out the slot.
The reading and writing to the slots were implemented using inline
assembly which forces a memory access and a compiler barrier.
BUG=b:74436746
Change-Id: Ia46133a49c03ce3ce0e73ae3d30547316c7ec43c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/26043
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Now that __aligned is around, take advantage of it.
Change-Id: I93cdbe108d752088f34d3f5722dce5d9b90bcdc3
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/26022
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
barrier_wait_timeout() was not used anywhere in the code. The
remaining two functions, barrier_wait() and release_barrier(), are
not used anywhere but the mp code.
Change-Id: If09991f95306becc68b6008ae6448695fb4a2dca
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/26021
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
There might be certain requirement in user function where user
might not want to pass any timeout value, in those cases
run_ap_work() should consider infinity as timeout and perform
all APs initialization as per specification.
Set expire_us <= 0 to specify an infinite timeout.
BRANCH=none
BUG=b:74436746
TEST=run_ap_work() is running successfully with 0 expire_us.
Change-Id: Iacd67768c8a120f6a01baaa6817468f6b9a3b764
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/25622
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Change f43adf0 (intel/common/block/cpu: Change post_cpus_init after
BS_DEV RESOURCES) moved post_cpus_init to BS_OS_RESUME for S3
path. This results in BSP timing out waiting for APs to be
parked. This change increases the time out value for APs to be parked
to 250ms. This value was chosen after running suspend-resume stress
test and capturing the maximum time taken for APs to be parked for
100 iterations. Typical values observed were ~150ms. Maximum value
observed was 152ms.
BUG=b:76442753
TEST=Verified for 100 iterations that suspend-resume does not run into
any AP park time out.
Change-Id: Id3e59db4fe7a5a2fb60357b05565bba89be1e00e
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/25422
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Since the timeout in bsp_do_flight_plan is bumped up to 1 second, this
change adds a print to indicate the amount of time it takes for all the
APs to check-in.
TEST=Verified on Nami that it prints:
"bsp_do_flight_plan done after 395 msecs."
Change-Id: I4c8380e94305ed58453ed18b341b3b923949d7a8
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/25044
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Currently, the AP check-in time-out in bsp_do_flight_plan is set to
100ms. However, as the number of APs increases, contention could
increase especially for resource like UART. This led to MP record
time-out issues on KBL platform with 7 APs and serial-console enabled
BIOS image.
This change increases the time-out value to 1 second to be on the safer
side and let APs check-in before continuing boot.
BUG=b:74085891
TEST=Verified that MP record time-out is not observed anymore on Nami.
Change-Id: I979c11a10e6888aef0f71b5632ea803a67bbb0ff
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/24965
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
AMD's fixed MTRRs have RdDram and WrDram bits that route memory
accesses to DRAM vs. MMIO. These are typically hidden for normal
operation by clearing SYS_CFG[19] (MtrrFixDramModEn). According to
BKDGs and AMD64 Programmer's Manual vol 2, this bit is clear at
reset, should be set for configuration during POST, then cleared for
normal operation.
Attempting to modify the RdDram and WrDram settings without unhiding
them causes a General Protection Fault. Add functions to enable and
disable MtrrFixDramModEn. Unhide/hide as necessary when copying or
writing the fixed MTRRs.
Finally, modify sipi_vector.S to enable the bits prior to writing
the fixed MTRRs and disable when complete.
This functionality is compiled out on non-AMD platforms.
BUG=b:68019051
TEST=Boot Kahlee, check steps with HDT
Change-Id: Ie195131ff752400eb886dfccc39b314b4fa6b3f3
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/23722
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Not all SMM save state sizes equate to having enough stack in the
permanent SMM handler. Therefore, ensure 1KiB of stack is available for
each cpu's stack. Intel's save state size is 1KiB, but AMD's save state
size is only 512. Therefore, decouple save state size from the per
cpu stack size.
BUG=b:70027919
Change-Id: I54b9e6f3cc0ad6ca3d7b60b2b422b5dc5a78a552
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22950
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
The original purpose of adjust_cpu_apic_entry() was to set
up an APIC map. That map was effectively only used for mapping
*default* APIC id to CPU number in the SMM handler. The normal
AP startup path didn't need this mapping because it was whoever
won the race got the next cpu number. Instead of statically
calculating (and wrong) just initialize the default APIC id
map when the APs come online. Once the APs are online the SMM
handler is loaded and the mapping is utilized.
Change-Id: Idff3b8cfc17aef0729d3193b4499116a013b7930
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21452
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
With the do while loop, it can be avoided do use an infinite loop with a
break condition inside.
Change-Id: I030f6782ad618b55112a2f0bac8dda08b497a9f1
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/20269
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The previous implementation was using a for loop. By it's
very definition the last statement in the for loop declaration
is done at the end of the loop. Therefore, if the conditional for
breaking out of the for loop because of a timeout would always
see a value of 0 for the number of APs accepted. Correct this
by changing to a while loop with an explicit timeout condition
at the end of the loop.
Change-Id: I503953c46c2a65f7e264ed49c94c0a46d6c41c57
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/20225
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
In case something goes wrong on one of the
cpus, add the ability to use a barrier with
timeout so that other cpus don't wait forever.
Remove static from barrier wait and release.
BUG=chrome-os-partner:59875
BRANCH=reef
TEST=None
Change-Id: Iab6bd30ddf7632c7a5785b338798960c26016b24
Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-on: https://review.coreboot.org/18107
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Fix the following warnings detected by checkpatch.pl
WARNING: braces {} are not necessary for single statement blocks
WARNING: braces {} are not necessary for any arm of this statement
WARNING: else is not generally useful after a break or return
TEST=Build and run on Galileo Gen2
Change-Id: I2d6b22c66d52f5f2d24b15270ad4b52894adebc2
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18842
Tested-by: build bot (Jenkins)
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Fix the following error and warning detected by checkpatch.pl:
ERROR: code indent should use tabs where possible
WARNING: please, no spaces at the start of a line
TEST=Build and run on Galileo Gen2
Change-Id: Ie6e4dd4c3eb0d2c44ecd008740dfc348d496fe78
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18841
Tested-by: build bot (Jenkins)
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
There are circumstances where the APs need to run a piece of
code later in the boot flow. The current MP init just parks
the APs after MP init is completed so there's not an opportunity
to target running a piece of code on all the APs at a later time.
Therefore, provide an option, PARALLEL_MP_AP_WORK, that allows
the APs to perform callbacks.
BUG=chrome-os-partner:60657
BRANCH=reef
Change-Id: I849ecfdd6641dd9424943e246317cd1996ef1ba6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17745
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
