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This allows to remove some assembly code.
Tested with QEMU Q35 to still print the revision correctly.
Change-Id: I36fb0e8bb1f46806b11ef8102ce74c0d10fd3927
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44319
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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The used assembler code only works on x86_32, but not on x86_64.
Use the inline functions to provide valid rdtsc readings on both
x86_32 and x86_64.
Tested on Lenovo T410 with additional x86_64 patches.
Change-Id: Icf706d6fb751372651e5e56d1856ddad688d9fa3
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45702
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
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Change-Id: I3e4450088adbb654050e7420956cf58ee1170a98
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44318
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Ie325541547ea10946f41a8f979d144a06a7e80eb
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44611
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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Update the COS mask calculation to accomodate the RW data as per SoC
configuration. Currently only one way is allocated for RW data and
configured for non-eviction. For earlier platform this served fine,
and could accomodate a RW data up to 256Kb. Starting TGL and JSL, the
DCACHE_RAM_SIZE is configured for 512Kb, which cannot be mapped to a
single way. Hence update the number of ways to be configured for non-
eviction as per total LLC size.
The total LLC size/ number of ways gives the way size. DCACHE_RAM_SIZE/
way size gives the number of ways that need to be configured for non-
eviction, instead of harcoding it to 1.
TGL uses MSR IA32_CR_SF_QOS_MASK_1(0x1891) and IA32_CR_SF_QOS_MASK_2(0x1892)
as COS mask selection register and hence needs to be progarmmed accordingly.
Also JSL and TGL platforms the COS mask selection is mapped to bit 32:33
of MSR IA32_PQR_ASSOC(0xC8F) and need to be updated in edx(maps 63:32)
before MSR write instead of eax(maps 31:0). This implementation corrects
that as well.
BUG=b:149273819
TEST= Boot waddledoo(JSL), hatch(CML), Volteer(TGL)with NEM enhanced
CAR configuration.
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Change-Id: I54e047161853bfc70516c1d607aa479e68836d04
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43494
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shreesh Chhabbi <shreesh.chhabbi@intel.corp-partner.google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
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The IA32_SMRR_PHYS_MASK MSR contains a 'Lock' bit, which will cause the
core to generate a #GP if the SMRR_BASE or SMRR_MASK registers are
written to after the Lock bit is set; this is helpful with securing SMM.
BUG=b:164489598
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I784d1d1abec0a0fe0ee267118d084ac594a51647
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44991
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Enable long mode in SMM handler.
x86_32 isn't affected by this change.
* Enter long mode
* Add 64bit entry to GDT
* Use x86_64 SysV ABI calling conventions for C code entry
* Change smm_module_params' cpu to size_t as 'push' is native integer
* Drop to protected mode after c handler
NOTE: This commit does NOT introduce a new security model. It uses the
same page tables as the remaining firmware does.
This can be a security risk if someone is able to manipulate the
page tables stored in ROM at runtime. USE FOR TESTING ONLY!
Tested on Lenovo T410 with additional x86_64 patches.
Change-Id: I26300492e4be62ddd5d80525022c758a019d63a1
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37392
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Eugene Myers <cedarhouse1@comcast.net>
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INVD is called below so if postcar is running in a cached environment
it needs to happen.
NOTE: postcar cannot execute in a cached environment if clflush is not
supported!
Change-Id: I37681ee1f1d2ae5f9dd824b5baf7b23b2883b1dc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37212
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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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>
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Change-Id: I746ea7805bae553a146130994d8174aa2e189610
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43368
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Change-Id: I823d04a4851437b4267a60886e5ab205bb2e1b10
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42464
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Fix integer with different size to pointer conversion.
Change-Id: I9c13892b2d79be12cc6bf7bc0a5e3a39b64032a1
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42984
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I7b657750b10f98524f011f5254e533217fe94fd8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42849
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Bring all GNVS related initialisation function to global
scope to force identical signatures. Followup work is
likely to remove some as duplicates.
Change-Id: Id4299c41d79c228f3d35bc7cb9bf427ce1e82ba1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42489
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Except for whitespace and varying casts the codes were
the same when implemented.
Platforms that did not implement this are tagged with
ACPI_NO_SMI_GNVS.
Change-Id: I31ec85ebce03d0d472403806969f863e4ca03b6b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Most LAPIC registers are 32bit, and thus the use of long is valid on
x86_32, however it doesn't work on x86_64.
* Don't use long as it is 64bit on x86_64, which breaks interrupts
in QEMU and thus SeaBIOS wouldn't time out the boot menu
* Get rid of unused defines
* Get rid of unused atomic xchg code
Tested on QEMU Q35 with x86_64 enabled: Interrupts work again.
Tested on QEMU Q35 with x86_32 enabled: Interrupts are still working.
Tested on Lenovo T410 with x86_64 enabled.
Change-Id: Iaed1ad956d090625c7bb5cd9cf55cbae16dd82bd
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36777
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I0bc321f499278e0cdbfb40be9a2b2ae21828d2f4
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42619
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Old (!PARALLEL_MP) cpu bringup uses this as the first
control to do SMM relocation.
Change-Id: I4241120b00fac77f0491d37f05ba17763db1254e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42617
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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* Add a function to check if a region overlaps with SMM.
* Add a function to check if a pointer points to SMM.
* Document functions in Documentation/security/smm
To be used to verify data accesses in SMM.
Change-Id: Ia525d2bc685377f50ecf3bdcf337a4c885488213
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41084
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Followups will remove remaining cases of PRMRR_SUPPORTED and
SMRR_SUPPORTED in the tree.
Change-Id: I7f8c7d98f5e83a45cc0787c245cdcaf8fab176d5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42358
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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The call made at mp_ops.post_mp_init() generally
uses four different names. Unify these with followups.
smm_southbridge_enable(SMI_EVENTS)
smm_southbridge_enable_smi()
hudson_enable_smi_generation()
enable_smi_generation()
Furthermore, some platforms do not enable power button
SMI early. It may be preferred to delay the enablement,
but fow now provide global_smi_enable_no_pwrbtn() too.
Change-Id: I6a28883ff9c563289b0e8199cd2ceb9acd6bacda
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42355
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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Attempts to write to APM_CNT IO port should always be guarded
with a test to verify SMI handler has been installed.
Immediate followup removes redundant HAVE_SMI_HANDLER tests.
Change-Id: If3fb0f1a8b32076f1d9f3fea9f817dd4b093ad98
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41971
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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When adding XIP stages on x86, the -P parameter was used to
pass a page size that covers the entire file to add. The same
can now be achieved with --pow2page and we no longer need to
define a static Konfig for the purpose.
TEST: Build asus/p2b and lenovo/x60 with "--pow2page -v -v" and
inspect the generated make.log files. The effective pagesize is
reduced from 64kB to 16kB for asus/p2b giving more freedom
for the stage placement inside CBFS. Pagesize remained at 64kB
for lenovo/x60.
Change-Id: I5891fa2c2bb2d44077f745619162b143d083a6d1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41820
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Keith Hui <buurin@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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There's not a function that is the equivalent to
x86_setup_mtrrs_with_detect() but not solving for above 4GiB.
Provide x86_setup_mtrrs_with_detect_no_above_4gb() which is the
equivalent to x86_setup_mtrrs_with_detect() but instructs the MTRR
solver to not take into account memory above 4GiB.
BUG=b:155426691
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: Ia1b5d67d6f139aaa929e03ddbc394d57dfb949e0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41897
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Introduce concept of var_mtrr_context object for tracking and
assigning MTRR values. The algorithm is lifted from postcar_loader
code, but it's generalized for different type of users: setting
MSRs explicitly or deferring to a particular caller's desired
actions.
BUG=b:155426691,b:155322763
Change-Id: Ic03b4b617196f04071093bbba4cf28d23fa482d8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41849
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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We want to use the CACHE_ROM_* macros in linker scripts. Avoid
`commonlib/helpers.h` as it contains an ALIGN() macro definition
that conflicts with the ALIGN keyword in linker scripts.
Change-Id: I3bf20733418ca4135f364a3f6489e74d45e4f466
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41785
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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Picasso does not define the state of variable MTRRs on boot. Add a
helper function to clear all MTRRs.
BUG=b:147042464
TEST=Build trembyle
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I21b887ce12849a95ddd8f1698028fb6bbfb4a7f6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40764
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Add a definition for a software SMI to allow AMD systems supporting
the MboxBiosCmdSmmInfo command to properly initialize the PSP.
BUG=b:153677737
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Change-Id: I1d78aabb75cb76178a3606777d6a11f1e8806d9b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40294
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Done with sed and God Lines. Only done for C-like code for now.
Change-Id: I2fa3bad88bb5b068baa1cfc6bbcddaabb09da1c5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40053
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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They're listed in AUTHORS and often incorrect anyway, for example:
- What's a "Copyright $year-present"?
- Which incarnation of Google (Inc, LLC, ...) is the current
copyright holder?
- People sometimes have their editor auto-add themselves to files even
though they only deleted stuff
- Or they let the editor automatically update the copyright year,
because why not?
- Who is the copyright holder "The coreboot project Authors"?
- Or "Generated Code"?
Sidestep all these issues by simply not putting these notices in
individual files, let's list all copyright holders in AUTHORS instead
and use the git history to deal with the rest.
Change-Id: I89b10076e0f4a4b3acd59160fb7abe349b228321
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39611
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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To mitigate against sinkhole in software which is required on
pre-sandybridge hardware, the smm entry point needs to check if the
LAPIC base is between smbase and smbase + smmsize. The size needs to
be available early so add them to the relocatable module parameters.
When the smmstub is used to relocate SMM the default SMM size 0x10000
is provided. On the permanent handler the size provided by
get_smm_info() is used.
Change-Id: I0df6e51bcba284350f1c849ef3d012860757544b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37288
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Check to ensure that dual monitor mode is supported on the
current processor. Dual monitor mode is normally supported on
any Intel x86 processor that has VTx support. The STM is
a hypervisor that executes in SMM dual monitor mode. This
check should fail only in the rare case were dual monitor mode
is disabled. If the check fails, then the STM will not
be initialized by coreboot.
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Change-Id: I518bb2aa1bdec94b5b6d5e991d7575257f3dc6e9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38836
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
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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>
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Change-Id: Icdd6b49751763ef0edd4c57e855cc1d042dc6d4d
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36373
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
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Change-Id: I730f80afd8aad250f26534435aec24bea75a849c
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37334
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
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This reverts commit 297b6b862a724de70abf33f681f63b6a3d84c24b.
Reason for revert: breaks smm. No code is using these fields. Original patch incomplete.
Change-Id: I6acf15dc9d77ed8a83b98f086f2a0b306c584a9b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37096
Reviewed-by: ron minnich <rminnich@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Addtions to include/cpu/x86 include for STM support.
Change-Id: I2b8e68b2928aefc7996b6a9560c52f71c7c0e1d0
Signed-off-by: Eugene D. Myers <edmyers@tycho.nsa.gov>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33985
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: ron minnich <rminnich@gmail.com>
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Change-Id: I64063bbae5b44f1f24566609a7f770c6d5f69fac
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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The x86 timers are a bit of a mess. Cases where different stages use
different counters and timestamps use different counters from udelays.
The original intention was to only flip TSC_CONSTANT_RATE Kconfig
to NOT_CONSTANT_TSC_RATE. The name would be incorrect though, those
counters do run with a constant rate but we just lack tsc_freq_mhz()
implementation for three platforms.
Note that for boards with UNKNOWN_TSC_RATE=y, each stage will have a
slow run of calibrate_tsc_with_pit(). This is easy enough to fix with
followup implementation of tsc_freq_mhz() for the platforms.
Implementations with LAPIC_MONOTONIC_TIMER typically will not have
tsc_freq_mhz() implemented and default to UNKNOWN_TSC_RATE. However,
as they don't use TSC for udelay() the slow calibrate_tsc_with_pit()
is avoided.
Because x86/tsc_delay.tsc was using two different guards and nb/via/vx900
claimed UDELAY_TSC, but pulled UDELAY_IO implementation, we also switch
that romstage to use UDELAY_TSC.
Change-Id: I1690cb80295d6b006b75ed69edea28899b674b68
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33928
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Haswell and model_2065 implement a static set_msr_bit helper which
should be publicly available instead. Move it to cpu/x86.
Change-Id: I68b314c917f15fc6e5351de1c539d5a3ae646df8
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36338
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I4d8db430f8cd0bf0f161fc5cef052f153e59e2bc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35390
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Unused and declaration conflicts with the one
amdfam10-15 uses in romstage.
Change-Id: Icd454431285b7c423a4f78d2a0085497d052adc9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35394
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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Change-Id: I909e9b5fead317928d3513a677cfab25e3c42f64
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34792
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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We mostly discourage typedefs for structs. Hide
smm_save_state_area_t in the single file that still
uses it.
Change-Id: I163322deab58126cc66d416987eaf7dca9ce8220
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Change-Id: Ic1e3cae5298997b552020b78e6ff56d60cf22036
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34821
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I9a4e57f8fd032f2824eab0e5b59d635710e3e24b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Any platform should need just one of these.
Change-Id: Ia0ff8eff152cbd3d82e8b372ec662d3737078d35
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34820
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Do this to avoid some amount of explicit typecasting
that would be required otherwise.
Change-Id: I5bc2c3c1dd579f7c6c3d3354c0691e4ba3c778e1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34706
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Change-Id: I361fb0e02fd0bd92bb1e13fe84c898a1ac85aa40
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34703
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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No need to limit these declarations to FSP. Both
PARALLEL_MP_INIT smm_relocate() and TSEG_STAGE_CACHE
can be built on top of this.
Change-Id: I7b0b9b8c8bee03aabe251c50c47dc42f6596e169
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Change-Id: I535ff1b16b1fa7c3c8c14b2be7eac32568f16077
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34194
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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While common to many Intel CPUs, this is not an architectural
MSR that should be globally defined for all x86.
Change-Id: Ibeed022dc2ba2e90f71511f9bd2640a7cafa5292
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34090
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: David Guckian
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fms() and fls() returns an 'unsigned int'.
Change-Id: Ia328e1e5a79c2e7606961bb1b68c01db6b77da21
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33817
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: If50d9218119d5446d0ce98b8a9297b23bae65c72
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33816
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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To clear all DRAM on x86_32, add a new method that uses PAE to access
more than 32bit of address space.
Add Documentation as well.
Required for clearing all system memory as part of security API.
Tested on wedge100s:
Takes less than 2 seconds to clear 8GiB of DRAM.
Tested on P8H61M-Pro:
Takes less than 1 second to clear 4GiB of DRAM.
Change-Id: I00f7ecf87b5c9227a9d58a0b61eecc38007e1a57
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31549
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I51aa300358013cb0e76704feb2115d2a7e260f8a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31193
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: David Guckian
Reviewed-by: Vanny E <vanessa.f.eusebio@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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Add the include for size_t.
Fixes compilation error on source files that do not include it.
Change-Id: Ic752886d94db18de89b8b8a5e70cf03965aeb5c3
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31922
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
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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>
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This macro was unnecessarily complex. Trying to avoid an overflow
for unknown reasons, and instead shifted the result into the sign
bit in C. Using a plain number literal that forces C to use an
adequate integer type seems to be safe. We start with 0xffffffff,
subtract `x` and add 1 again. Turned out to be a common pattern
and can't overflow for any positive 32-bit `x`.
Change-Id: Ibb0c5b88a6e42d3ef2990196a5b99ace90ea8ee8
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/31322
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
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This reverts commit 6bbc8d8050b1d51ec4bf15003a2da54e20d476c7.
The macro is used in assembly where integer suffixes are not portable.
Also, it is unclear how this can overflow as it's already the macros
purpose to avoid the overflow.
Change-Id: I12c9bfe40891ae3afbfda05f60a20b59e2954aed
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/31290
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Use unsigned long to prevent sign overflow.
Fixes wrong MTRRs settings on x86_64 romstage.
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Change-Id: I71b61a45becc17bf60a619e4131864c82a16b0d1
Reviewed-on: https://review.coreboot.org/c/30502
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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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>
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This patch introduces 3 helper function for cpuid(1) :
1. cpu_get_cpuid() -> to get processor id (from cpuid.eax)
2. cpu_get_feature_flags_ecx -> to get processor feature flag (from cpuid.ecx)
3. cpu_get_feature_flags_edx -> to get processor feature flag (from cpuid.edx)
Above 3 helper functions are targeted to replace majority of cpuid(1)
references.
Change-Id: Ib96a7c79dadb1feff0b8d58aa408b355fbb3bc50
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/30123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Instead of SMMSTORE_APM_CNT use APM_CNT_SMMSTORE and define it in
cpu/x86/smm.h
Change-Id: Iabc0c9662284ed3ac2933001e64524011a5bf420
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/30023
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Instead of ELOG_GSMI_APM_CNT use APM_CNT_ELOG_GSMI and define it in
cpu/x86/smm.h
Change-Id: I3a3e2f823c91b475d1e15b8c20e9cf5f3fd9de83
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/30022
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Initially, I wanted to move only the Kconfig DISPLAY_MTRRS into the
"Debug" menu. It turned out, though, that the code looks rather generic.
No need to hide it in soc/intel/.
To not bloat src/Kconfig up any further, start a new `Kconfig.debug`
hierarchy just for debug options.
If somebody wants to review the code if it's 100% generic, we could
even get rid of HAVE_DISPLAY_MTRRS.
Change-Id: Ibd0a64121bd6e4ab5d7fd835f3ac25d3f5011f24
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/29684
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I17c4fc4e3e2eeef7c720c6a020b37d8f7a0f57a4
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29300
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Change-Id: I9fba67be12483ea5e12ccd34c648735d409bc8b0
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29252
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
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Change-Id: I2b3168c600a81502f9cd1ff3203c492cf026e532
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/27279
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Change-Id: Ic9022a98878a2fcc85868a64aa9c2ca3eb2e2c4e
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29177
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Phase 1. Due to the size of the effort, this CL is broken into several
phases.
Change-Id: I0236e0960cd1e79558ea50c814e1de2830aa0550
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29065
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
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Use "cpu/x86/msr.h" for common IA-32 MSRs and correct IA-32 MSRs names.
Change-Id: Ida7f2d608c55796abf9452f190a58802e498302d
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28752
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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Add a __always_inline macro that wraps __attribute__((always_inline))
and replace current users with the macro, excluding files under
src/vendorcode.
Change-Id: Ic57e474c1d2ca7cc0405ac677869f78a28d3e529
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/28587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@google.com>
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This change adds some MSRs that are needed in a subsequent change to add
support for Continuous Performance Control.
Change-Id: Id4ecff1bc5eedaa90b41de526b9a2e61992ac296
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://review.coreboot.org/28067
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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According to the "Intel® 64 and IA-32 Architectures Software Developer’s Manual"
the SMRR MSR are at a different offset for model_6fx and model_1067x.
This still need SMRR enabled and lock bit set in MSR_FEATURE_CONTROL.
Change-Id: I8ee8292ab038e58deb8c24745ec1a9b5da8c31a9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27585
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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This is how these MSR's are referenced in Intel® 64 and IA-32 Architectures
Software Developer’s Manual.
The purpose is to differentiate with MSR_SMRR_PHYSx.
Change-Id: I54875f3a6d98a28004d5bd3197923862af8f7377
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27584
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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If CPU 0's stack grows to large, it will overflow into CPU 1's stack.
If CPU 0 is handling the interrupt then CPU 1 should be in an idle loop.
When the stack overflow occurs it will override the return pointer for
CPU 1, so when CPU 0 unlocks the SMI lock, CPU 1 will attempt to return
to a random address.
This method is not foolproof. If code allocates some stack variables
that overlap with the canary, and if the variables are never set, then
the canary will not be overwritten, but it will have been skipped. We
could mitigate this by adding a larger canary value if we wanted.
I chose to use the stack bottom pointer value as the canary value
because:
* It will change per CPU stack.
* Doesn't require hard coding a value that must be shared between the
.S and .c.
* Passing the expected canary value as a parameter felt like overkill.
We can explore adding other methods of signaling that a stack overflow
had occurred in a follow up. I limited die() to debug only because
otherwise it would be very hard to track down.
TEST=built on grunt with a small and large stack size. Then verified
that one causes a stack overflow and the other does not.
Stack overflow message:
canary 0x0 != 0xcdeafc00
SMM Handler caused a stack overflow
Change-Id: I0184de7e3bfb84e0f74e1fa6a307633541f55612
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/27229
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Ifb8aa43b6545482bc7fc136a90c4bbaa18d46089
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/22957
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Move #includes to the top and remove unnecessary guards. Hopefully this
prevents future surprises.
Change-Id: Id4571c46a0c05a080b2b1cfec64b4eda07d793bb
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/26761
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Most, if not all, chipsets have MMIO between 0xfe000000 and 0xff000000.
So don't try to cache more than 16MiB of the ROM. It's also common that
at most 16MiB are memory mapped.
Change-Id: I5dfa2744190a34c56c86e108a8c50dca9d428268
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/26567
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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As far as I can see this Kconfig option was used wrong ever since it
was added. According to the commit message of 107f72e (Re-declare
CACHE_ROM_SIZE as aligned ROM_SIZE for MTRR), it was only necessary
to prevent overlapping with CAR.
Let's handle the potential overlap in C macros instead and get rid
of that option. Currently, it was only used by most FSP1.0 boards,
and only because the `fsp1_0/Kconfig` set it to CBFS_SIZE (WTF?).
Change-Id: I4d0096f14a9d343c2e646e48175fe2127198a822
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/26566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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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>
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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>
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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>
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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>
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Even though most x86 systems don't run with paging on, it's
helpful to always print it out for the ones that do without
making a more complicated handler. New dump will look like
the following:
Unexpected Exception: 6 @ 10:7ab84be2 - Halting
Code: 0 eflags: 00010006 cr2: 00000000
eax: 7abb80ec ebx: deadbeef ecx: 00000000 edx: 00000002
edi: 7abb3000 esi: 00000004 ebp: 7abb2fd8 esp: 7abb2fb0
7ab84ba0: 00 01 00 83 ec 0c 6a 39
7ab84ba8: e8 8a 02 01 00 e8 e1 08
7ab84bb0: 00 00 e8 4e 3d 00 00 59
7ab84bb8: 5b 52 50 e8 f5 3c 00 00
7ab84bc0: c7 04 24 0a 00 00 00 e8
7ab84bc8: 3c 3d 00 00 c7 04 24 80
7ab84bd0: 00 00 00 e8 5f 02 01 00
7ab84bd8: e8 1e 38 01 00 e8 7e 50
7ab84be0: 01 00 0f 0b bb 98 ec ba
7ab84be8: 7a 83 c4 10 8b 03 85 c0
7ab84bf0: 0f 84 be 00 00 00 83 78
7ab84bf8: 04 00 8d 50 08 75 0c 56
7ab84c00: 56 ff 30 52 e8 f8 fe ff
7ab84c08: ff eb 0a 51 51 ff 30 52
7ab84c10: e8 2e ff ff ff 83 c4 10
7ab84c18: 83 c3 04 eb cf 89 d8 e8
BUG=b:72728953
Change-Id: I0e87bbe776f77623ad8297f5d80167998daec6ed
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25762
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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When employing PAGING_IN_CACHE_AS_RAM more areas need to be
mapped in at runtime. Therefore, paging_identity_map_addr() is
added to support adding identity mappings. Because there are a
fixed amount of pages in cache-as-ram paging only the existing
paging structures can be used. As such that's a limitation on
what regions and length one can map. Using util/x86/x86_page_tables.go
to generate page tables will always populate all the page directory
pages. Therefore, 2MiB mappings are easy to map in.
BUG=b:72728953
Change-Id: Ibe33aa12972ff678d2e9b80874529380b4ce9fd7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25718
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Processors, such as glk, need to have paging enabled while
in cache-as-ram mode because the front end is agressive about
fetching lines into the L1I cache. If the line is dirty and in
the L1D then it writes it back to "memory". However, in this case
there is no backing store so the cache-as-ram data that was written
back transforms to all 0xff's when read back in causing corruption.
In order to mitigate the failure add x86 architecture support for
enabling paging while in cache-as-ram mode. A Kconfig variable,
NUM_CAR_PAGE_TABLE_PAGES, determines the number of pages to carve
out for page tables within the cache-as-ram region. Additionally,
the page directory pointer table is also carved out of cache-as-ram.
Both areas are allocated from the persist-across-stages region
of cache-as-ram so all stages utilizing cache-as-ram don't corrupt
the page tables.
The two paging-related areas are loaded by calling
paging_enable_for_car() with the names of cbfs files to load the
initial paging structures from.
BUG=b:72728953
Change-Id: I7ea6e3e7be94a0ef9fd3205ce848e539bfbdcb6e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25717
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
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Add paging_set_default_pat() which sets up the PAT MSR according
to util/x86/x86_page_tables.go. Using page attribute types require
a matching of the PAT values with the page table entries. This function
is just providing the default PAT MSR value to match against the
utility.
BUG=b:72728953
Change-Id: I7ed34a3565647ffc359ff102d3f6a59fbc93cc22
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25715
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
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Add the following functions for use outside of the paging module:
void paging_enable_pae_cr3(uintptr_t cr3);
void paging_enable_pae(void);
void paging_disable_pae(void);
The functions just enable and/or disable paging along with PAE.
Disassembly shows equivalent output for both versions.
BUG=b:72728953
Change-Id: I9665e7ec4795a5f52889791f73cf98a8f4def827
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25714
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
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The EFER and PAT MSRs are x86 architecturally defined. Therefore,
move the macro defintions to msr.h. Add 'paging' prefix to the
PAT and NXE pae/paging functions to namespace things a little better.
BUG=b:72728953
Change-Id: I1ab2c4ff827e19d5ba4e3b6eaedb3fee6aaef14d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
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Register CR3 holds the physical address of paging-structure hierarchy.
Add functions to enable read/write of this register.
Change-Id: Icfd8f8e32833d2c80cefc8f930d6eedbfeb5e3ee
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/25478
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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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>
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Change-Id: I74c5cc22f02302314ba010bc599051c1495a13cb
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/22848
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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The x86 bsf and bsr instructions only allow for a memory
or register operand. The 'g' constraint includes immediate
operands which the compiler could choose to emit for the instruction.
However, the assembler will rightfully complain because the
instruction with an immediate operand is illegal. Fix the constraints
to bsf and bsr to only include memory or registers.
Change-Id: Idea7ae7df451eb69dd30208ebad7146ca01f6cba
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22291
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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In amd64_smm_state_save_area_t break out fields in reserved4 to allow access.
BUG=b:65485690
Change-Id: I592fbf18c166dc1890010dde29f76900a6849016
Signed-off-by: John E. Kabat Jr <john.kabat@scarletltd.com>
Reviewed-on: https://review.coreboot.org/22092
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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