Variable length arrays were a feature added in C99 that allows the
length of an array to be determined at runtime. Eg.
int sum(size_t n) {
int arr[n];
...
}
This adds a small amount of runtime overhead, but is also very
dangerous, since it allows use of an unlimited amount of stack memory,
potentially leading to stack overflow. This is only worsened in
coreboot, which often has very little stack space to begin with. Citing
concerns like this, all instances of VLA's were recently removed from the
Linux kernel. In the immortal words of Linus Torvalds [0],
AND USING VLA'S IS ACTIVELY STUPID! It generates much more code, and
much _slower_ code (and more fragile code), than just using a fixed
key size would have done. [...] Anyway, some of these are definitely
easy to just fix, and using VLA's is actively bad not just for
security worries, but simply because VLA's are a really horribly bad
idea in general in the kernel.
This patch follows suit and zaps all VLA's in coreboot. Some of the
existing VLA's are accidental ones, and all but one can be replaced with
small fixed-size buffers. The single tricky exception is in the SPI
controller interface, which will require a rewrite of old drivers
to remove [1].
[0] https://lkml.org/lkml/2018/3/7/621
[1] https://ticket.coreboot.org/issues/217
Change-Id: I7d9d1ddadbf1cee5f695165bbe3f0effb7bd32b9
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33821
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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>
Set FD bit if xHCI is disabled in devicetree.
Change-Id: I3d08ded10daea6d86857ebbbf3f8dcc85ebe9df4
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34336
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This patch appends a unit (milliseconds) to time-out macro names for
better understanding the code which is using the macros.
Change-Id: Ibc4beda2660a83fd5f0ed325b2ee3148c6d96639
Signed-off-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34384
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch provides an increased timeout (60ms -> 1s) for SPI
HW-sequencing flash erase operations. Without that the erase for MRC
cache writing on siemens/mc_bdx1 sometimes goes wrong because the
timeout stops waiting for flash cycle completion. It was found
during continuous integration. Investigation showed that the used flash
type takes sporadic (e.g. 5% of the test cycles) more time for completion
of erasing operation if the ambient temperature increases. The measured
time values are in range of data sheet of SPI flash. 60ms is a typical
value. So increasing the value is necessary.
tested on siemens/bdx1; measured time values with increased ambient
temperature of flash were always smaller than worst case value of 1s.
Change-Id: Id50636f9ed834ffd7810946798b300e58b2c14d2
Signed-off-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34173
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Functional changes were already done in 5eb81bed2e (sb/intel/i82801gx:
Detect if the southbridge supports AHCI) but we forgot to update the
`chip.h` and devicetrees.
Change-Id: I0e25f54ead8f5bbc6041d31347038e800787b624
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34462
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The processor P_BLK doesn't support throttling. This behaviour could be
emulated with SMM, but instead just update the FADT to indicate no support
for legacy I/O based throttling using P_CNT.
We have _PTC defined in SSDT, which should be used in favour of P_CNT by
ACPI aware OS, so this change has no effect on modern OS.
Drop all occurences of p_cnt_throttling_supported and update autoport
to not generate it any more.
Change-Id: Iaf82518d5114d6de7cef01dca2d3087eea8ff927
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34351
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Taken from
"Intel 6 Series Chipset and Intel C200 Series Chipset"
Document Number: 324645-006 and
"Intel 5 Series Chipset and Intel 3400 Series Chipset"
Document Number: 322169-004 and
"Intel 6 Series Chipset"
Document Number: 324645-001.
UPDCR was found in GNU/Linux's drivers/pci/quirks.c.
DMC2 was guessed as it's close to DMC and defined for 5 series chipset.
Test:
Run BUILD_TIMELESS=1 and compared the coreboot.roms, no differences.
Change-Id: I4fed7c38078cabd4308424c7547416e87c9e6fa7
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34334
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Move the SMM lock outside the function as it is renamed.
Replace conditional !PARALLEL_MP with SMM_ASEG to better
reflect the use.
Change-Id: I93bf0d2f711f94a5bb741bdcd92c1e0fec228684
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34302
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
In our codebase, this is only coupled with intel/e7505.
The PCI registers reference here were for intel/i945.
Also aseg_smm_lock() was previously not called.
Change-Id: I21d991c8c2f5c2dde1f148fd80963e39d9836d3c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34149
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This southbridge code may be built with either ASEG or TSEG.
Fix minor collision in namespaces.
Change-Id: I04f90fb308c280621a3037fee4bece1e5655480e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This is really an inverse of SMM_TSEG to flag
platforms that should potentially move away
from ASEG implementation.
Change-Id: I3b9007c55c75a59a9e6acc0a0e701300f7d21f87
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34134
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This also removes the relevant RCBA replays the mainboard dir.
Change-Id: I75dd9d1bcd09d835f205a51c087d52ebb4e166f6
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33038
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Thomas Heijligen <src@posteo.de>
This adds a common place to set the final opprefix, optype and opmenu,
with a hook to override the opmenu.
Change-Id: I162ae6bad7da3ea02b96854ee28e70594e210947
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33036
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Like the line above it, this should be & instead of | (otherwise it will
always incorrectly return true). spi_locked() is only used internally to
decide which opcodes will be used to talk to the flash, and if it is
falsely reported as locked, the worst case should be a denial of service
(unless there are more bugs).
Change-Id: I5208b523c815d15d7263594f06ccfacd8a9510b1
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1402092
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33963
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Set up generic decode ranges based on the devicetree settings.
Change-Id: Ie59b8272c69231d6dffccee30b4d3c84a7e83e8f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33548
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
TODO: There is no reason to do this in SMM.
Change-Id: I8bbb2f65bbe674bd1bc4ae8a4086bd1f5e9a79fa
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33139
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Intel Braswell supports i2c block writes using SMBus controller.
This support is missing in actual smbus routines.
Add do_i2c_block_write() which is a based on do_smbus_block_write() but
also write first byte to SMBHSTDAT1.
The caller needs to configure the SMBus controller in i2c mode.
In i2c mode SMBus controller will send the next sequence:
SMBXINTADD, SMBHSTDAT1, SMBBLKDAT .. SMBBLKDAT
To ensure the the command is send over the bus the SMBHSTCMD register must
be written also
BUG=N/A
TEST=Config eDP for LCD display on Facebook FBG-1701
Change-Id: I40f8c0f5257a62398189f36892b8159052481693
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30800
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This was done to update the global variable g_ichspi_lock but this is
now removed in favor of reading the lock bit during runtime instead of
keeping track of the state.
Change-Id: I8cb69a152b0e050d64d8979ee92de2d24136f8dc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33390
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The SPI swseq controller can be locked in other parts of the code, for
instance when it's locked down in the finalize section. The driver
has to be made aware of that. The simpler solution is to not keep
track of the state and simply read out the lock bit on each SPI
transfer.
Change-Id: Ifcd5121b89d6f80fc1c1368786982d0d9fa1bf61
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33388
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This allows to port C_ENVIRONMENT_BOOTBLOCK to sandybridge separately
from nehalem.
Change-Id: If3c6619cf22d1e2995eb19823b0f3f969d252b3b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33188
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This automatically detects whether the southbridge supports AHCI.
If AHCI support is selected it will be used unless "sata_no_ahci" is
set in the devicetree to override the behavior.
Change-Id: I8d9f4e63ae8b2862c422938f3103c44e761bcda4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This allows to use the CONFIG_CONSOLE_SPI_FLASH.
Change-Id: I563c69ce6337d46380f889f42633e858ac207916
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33064
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
<types.h> is supposed to provide <stdint.h> and <stddef.h>.
When <types.h> is included, <stdint.h> and/or <stddef.h> is removed.
Change-Id: I4d8628e4ce3c7f80da2590b4cad618b290e0d513
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32809
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
The file and all of it's functions are unused. Drop the dead code.
Change-Id: Iaddd7a688d431d40f38293939e084d19b286aed4
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32688
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: David Guckian
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Since all targets using sb/intel/common and cpu/intel/smm/gen1
are now using PARALLEL_MP, some code is not used anymore.
Change-Id: Ibdc2bb0f1412366b945813efbc1b6451d27f376f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30019
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
TODO in followup patch: Some not mainboard specific things should be
moved out of mainboard_smi_apmc.
Change-Id: Ifc2d8f7755ace598e66b162d071d472093e4656e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/26296
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This adds a file i82801gx/bootblock_gcc.c since other targets that
don't yet C_ENVIRONMENT_BOOTBLOCK still use the romcc compiled
bootblock.c.
Tested on Foxconn D41S.
Change-Id: I7e74838b0d5e9c192082084cfd9821996f0e4c50
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30939
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>