Remove duplicated definitions of ARRAY_SIZE macro across util/ dir.
Instead of duplicates, use the one from commonlib/bsd/helpers.h file.
BUG=b:231765496
TEST=make -C util/cbfstool; make -C util/cbmem;
make -C util/intelmetool; make -C util/superiotool
Change-Id: I29b776586b4f0548d4026b2ac77095791fc9f3a3
Signed-off-by: Konrad Adamczyk <konrada@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74474
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-by: Grzegorz Bernacki
Reviewed-by: Robert Zieba <robertzieba@google.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
CB:37152 was supposed to be uprev to Linux's kconfig, but it got this
one case wrong, Linux never returned "0" [1]. As a result, when an
option has default value different than 0, and it was changed to 0,
savedefconfig skips saving it. However, during the build from such
defconfig the option is assigned default value.
TEST=Set SEABIOS_DEBUG_LEVEL to 0 and see that savedefconfig writes
it to defconfig file.
[1] 7cf3d73b43
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Change-Id: I821e45dcec99904fab85f136298cbd0315237ff6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72650
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Add a minimal Dockerfile that pre-installs necessary software which is
needed to work with coreboot.
Change-Id: I85f3dc7b28b77989f0f1400d1282ed4b17082f65
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74481
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
This adds a new utility for copying ec_commands.h and ec_cmd_api.h from
the chrome EC repo with the appropriate copyright header adjustment.
It is invoked as:
util/chromeos/update_ec_headers.sh [EC-repo]
where EC-repo is the top of the EC repo from which header files are to
be obtained.
The corresponding files in src/ec/google/chromeec are updated but not
committed. Also, a commit message is suggested with the original git
versions for reference.
BUG=b:258126464
Change-Id: Ib43c75d807dd925b2c4bff425c07a36b4b4582c4
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74879
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Boris Mittelberg <bmbm@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
There are 2 regex patterns defined to process the lines from *fw.cfg:
1) for lines with mandatory entries
2) for lines with mandatory + optional entries
Consolidate the regex pattern. Add enums for matching regex caller
groups so that the human readable group IDs can be used instead of magic
numbers.
BUG=None
TEST=Build Skyrim BIOS which only have mandatory entries. Build Guybrush
BIOS image which have both mandatory and optional entries. Confirm that
the amdfw.rom built before and after this change have matching SHA in
both Skyrim and Guybrush images. This ensures that the optional level
entries in Guybrush are handled as expected. Boot to OS in Skyrim.
Change-Id: I7289ddbbec4d5daefe64f59b687ba3a4af46d052
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74950
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
The MAX_PSP_ENTRIES constant reserves space for the psp directory table
entries. This table is aligned to 4K and the next binary is also aligned
to 4K. The number of psp directory entries on Birman exceeds the
previous limit, so increase it to the maximum that will fit in a 4K
block.
TEST=timeless builds for Birman unchanged
Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Change-Id: I297edc9cccffde0ad1ce7461b375542f9f2f7c23
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73653
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Bao Zheng <fishbaozi@gmail.com>
Reviewed-by: Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
According to SPI programming guide, a region limit of 0 as well as
region base of 7FFFh indicates an unused/reserved region.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I790d7f5631ecef3043b2c17c41430dc4fd854f72
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74735
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Match-any-character operators (eg. ".*") shall not match newline
characters for BANNER_REGEX, since given regular expression
matches newline explicitly.
Add REG_NEWLINE flag to `regcomp` call.
BUG=b:278718871
TEST=Boot firmware on skyrim, reboot.
Run `cbmem -2`.
`cbmem -2` returns second-to-last boot log.
Change-Id: I9e924349ead0fa7eea8b9ad5161138a4c4946ade
Signed-off-by: Konrad Adamczyk <konrada@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74742
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
The version of the Zephyr SDK that is used is quite old and Zephyr
hasn't been really used. Thus, drop it and also its dependencies from
u-boot.
Change-Id: Ie498d687e1566133adf650166117d8f68fcfdaf6
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73979
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
Call pip3 with `--break-system-packages` allowing it to install packages
system-wide. This fixes building the Docker container.
Change-Id: Id093f2c69fec43556c434fbca7b36095a7e6bd97
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74292
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
It's not necessary to have multiple steps for installing packages and
requirements. Just merge the two install steps to one.
Change-Id: Ibe620e5b20a5f1a5d4e1c4c98942c136f450f280
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74245
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
These strings are now only expanded in lib/identity.c.
This improves ccache hit rates slightly, as one built object file
lib/version.o is used for all variants of a board. Also one built
object file lib/identity.o can become a ccache hit for successive
builds of a variant, while the commit hash changes.
Change-Id: Ia7d5454d95c8698ab1c1744e63ea4c04d615bb3b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74449
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
In order to accord with grub (see include/grub/i386/linux.h) and
comments for offsets of members of struct linux_params,
struct e820entry should be defined as __packed, otherwise,
sizeof(struct linux_params) will become 4224 (0x1080).
Fortunately, the affected area is usually not occupied.
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Change-Id: I09955c90e4eec337adca383e628a8821075381d6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74270
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
In CB:41119, I sort of made up a mechanism on the fly for how to make
the machine-parseable cbfstool print output extensible without breaking
backwards compatibility for older scripts. But I only explained it in
the commit message which is not very visible. This patch adds a comment
to the function that generates that output so that people who want to
change it can understand the intent.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I0d18d59e7fe407eb34710d6a583cfae667723eb7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74347
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Ioapic information in the devicetree was only used to set up mptables
but this generic driver was removed (ca5a793 drivers/generic/ioapic:
Drop poor implementation).
This removes the unused remainders from mainboard devicetrees.
Remove ioapic setup from sconfig.
Change-Id: Ib3fef0bf923ab3f02f3aeed2e55cf662a3dc3a1b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71789
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
This to fix following error using Clang-16.0.0:
/cb-build/coreboot-toolchain.0/clang/LENOVO_W500/mainboard/lenovo/t400/static.c:135:22: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
.backlight_enable = 0x01,
^~~~
/cb-build/coreboot-toolchain.0/clang/LENOVO_W500/mainboard/lenovo/t400/static.c:136:23: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
.dock_event_enable = 0x01,
^~~~
Change-Id: Icd35224877fee355e1bbb8a8e838cb047604babb
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73810
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
This reverts commit 89b4f69746.
SI_BIOS is mostly used to indicate the BIOS region in Intel IFD. Not all
platforms are Intel platforms with an IFD, so revert this change. Also
tooling often depends on names not changing so renaming things should
not be done lightly. The default region should also be in sync with
non-x86 and made systematic across the tree.
Change-Id: I46f52494498295ba5e2a23d0b66b56f266293050
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74290
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
For compatibility reasons, egrep is just a wrapper around grep today.
Thus, replace it with `grep -E`.
Change-Id: Ief08a22e4cd7211a3fee278492c95d37f9e058fa
Signed-off-by: Felix Singer <felix.singer@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74171
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
CONFIG_ARCH gives false positives for CONFIG_ARCH_X86_64_PGTBL_LOC so
use a different string: 'CONFIG_MAINBOARD_DIR'.
Change-Id: Ie5d4fc4693bc303afb16884c53c9ca4d1778a5cb
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74220
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Update spd_gen and part_id_gen utilities to accommodate Phoenix platform
so that SPD can be generated for the memory parts used in that platform.
SPD requirements for Phoenix and Mendocino platforms are identical.
BUG=b:273383819
TEST=Run spd_gen and ensure that both Mendocino and Phoenix platforms
share the platform manifest for LP5 memory parts.
Change-Id: I7a12f73065864f08db8922c1a69eb503865a25b1
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74125
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
The main build process already runs multi-threaded, when requested.
Apply the same setting to the bootstrap / configure step.
Change-Id: I89d6728a0985946b702f83770bedf767afb12690
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74156
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Debian removed Python 2 from their Sid repository and so it needs to be
removed from the Dockerfile as well.
Built and tested the Dockerfile with Python 2 removed. Still works.
Change-Id: If4e298dc275c1dfaf57cd4c3f8e5f89410318ec0
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71711
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Currently ifdtool --validate will not correctly validate the FMAP
against the IFD regions, since it will compare the IFD bios region with
an FMAP region called SI_BIOS.
It's probably a good idea to define default name for the BIOS FMAP
region like we have for 'COREBOOT' or 'FMAP' FMAP region.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I55eddfb5641b3011d4525893604ccf87fa05a1e2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73449
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
On systems that do not provide their own *.fmd (Flashmap) file, we
fall back to a default flashmap file. That file however does not contain
the blobs (ME, GBE ...), that are usually placed below the BIOS Flashmap.
It can therefore easily happen that the placement of the blobs collides
with the placement of the BIOS region (e.g. if CBFS_SIZE is big enough).
The fmaptool can't catch that, since it does not know of the blobs
placement.
This patch basically maps the regions described in the IFD (Intel
Firmware Descriptor) to the default Flashmap.
Test: Build and see that build/fmap.fmd contains all blobs now (on intel
systems that are supported by the ifdtool)
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I82cb252fff456773af69943e188480a4998736fd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73487
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Keep clean copies of PSP and BIOS table. Refresh the working tables
before they are filled with file names and other information at each
iteration.
Change-Id: Ie8339a4d66c38e02180cbf99e13914bfff66dc0f
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73628
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
To reduce the size of amdfwtool.c which is already too big.
Change-Id: Ib80eeb42f59a3dda04402b2feaadc1d178ed989e
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73910
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Since commit 2f6b7d557d ("amdfwtool: Move the filling of table headers
into functions"), the combo_psp_directory union element in the
embedded_firmware is unused and the new_psp_directory element is used in
all places, so replace the union of new_psp_directory and
combo_psp_directory with just the new_psp_directory struct element.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I35d339b3084ec8f93210095c233f5e68296d0013
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73834
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Move the NixOS configuration into a subdirectory so that configurations
for other distros can be added as well.
Change-Id: I0462c1a6541878c973be4302c5c5e9e9bfaed2a6
Signed-off-by: Felix Singer <felix.singer@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73684
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: I9e83a3ac56d5c42d8d6839cc4d961adf0b656fb5
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73725
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Change-Id: Ia98fdbee4c4005562662313ebe2478d0aeb879bc
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73724
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
This allows individual components to be placed in a location other than
what is specified by the FIRMWARE_LOCATION line.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I3a83e52d081a5909d54eacc575dd2b40b09e4038
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73656
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
If Recovery/Backup APCB is not passed, then AMD_BIOS_APCB_BK entry is
not populated. But PSP expects that bios directory entry to be
populated. Also on mainboards where both APCB and recovery APCB are same
(eg. Skyrim), 2 copies of the same APCB are added to amdfw*.rom. Update
amdfwtool to support not passing recovery/backup APCB. If the recovery
APCB is not passed, then populate AMD_BIOS_APCB_BK entry and make it
point to the same offset as AMD_BIOS_APCB entry.
BUG=b:240696002
TEST=Build and boot to OS in Skyrim. Ensure that the device can enter
recovery mode. Perform multiple suspend/resume cycles.
Change-Id: I031ba817573cd35160f5e219b1b373ddce69aa6b
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73661
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
On newer SoCs the initial alignment is not required. So skip initial
alignment. This saves 64 KiB flash space on each firmware slots. This
also saves ~5 ms while loading amdfw.rom
BUG=b:240696002
TEST=Build and boot to OS in Skyrim.
Change-Id: I27cbfde2d7d58b62a4c0039c60babc3fb3bd95fa
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73654
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
- use __linux__ instead of __GLIBC__ guard for Linux-specific includes
- use POSIX ioperm instead of deprecated iopl
Signed-off-by: Fabian Groffen <grobian@gentoo.org>
Change-Id: I99613007aa9feddcb1041f31085cdeb195ff7a68
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73358
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
It was used for printing the dependencies which is now taken by macro
DEP_FILES in soc/amd/common/Makefile.inc.
TEST=binary identical test on google/guybrush amd/chausie
Change-Id: I1b86df2cb2ed178cf0a263c50ccb3e2254a3852b
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73627
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Move main body of PSP padding into a loop which can add a new combo
entry. In the loop, get the FW files from each fw.cfg, create new pack
of PSP, and fill the combo header. Currently Feature COMBO is still
not fully functional. But the non-combo case will not be affected for
sure.
The real changes are
1. Add a do-while loop.
2. Remove a "TODO" comment.
All other changes are re-indenting and re-filling.
Change-Id: I351192a4bc5ed9ec0bfa3f2073c9633b8b44246d
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58554
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
For now, combo index is 0, and only the first entry in config table is
used. The index will grow when there are more combo entries.
Add a command parameter to give fw.cfg for combo index 1. Process the
combo config in the future loop.
Change-Id: I00609d91defc08e17f937ac8339575f84b1bd37c
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73496
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Konrad Adamczyk