mb/google/brya/var/orisa: Update Type C DisplayPort HPD Configuration

[coreboot2.git] / src / Kconfig

## SPDX-License-Identifier: GPL-2.0-only

mainmenu "coreboot configuration"

menu "General setup"

config LOCALVERSION
        string "Local version string"
        help
          Append an extra string to the end of the coreboot version.

          This can be useful if, for instance, you want to append the
          respective board's hostname or some other identifying string to
          the coreboot version number, so that you can easily distinguish
          boot logs of different boards from each other.

config CONFIGURABLE_CBFS_PREFIX
        bool
        help
          Select this to prompt to use to configure the prefix for cbfs files.

choice
        prompt "CBFS prefix to use"
        depends on CONFIGURABLE_CBFS_PREFIX
        default CBFS_PREFIX_FALLBACK

config CBFS_PREFIX_FALLBACK
        bool "fallback"

config CBFS_PREFIX_NORMAL
        bool "normal"

config CBFS_PREFIX_DIY
        bool "Define your own cbfs prefix"

endchoice

config CBFS_PREFIX
        string "CBFS prefix to use" if CBFS_PREFIX_DIY
        default "fallback" if !CONFIGURABLE_CBFS_PREFIX || CBFS_PREFIX_FALLBACK
        default "normal" if CBFS_PREFIX_NORMAL
        help
          Select the prefix to all files put into the image. It's "fallback"
          by default, "normal" is a common alternative.

config DEFAULT_COMPILER_LLVM_CLANG
        bool
        help
          Allows to override the default compiler. This can for instance be
          set in site-local/Kconfig.

choice
        prompt "Compiler to use"
        default COMPILER_LLVM_CLANG if DEFAULT_COMPILER_LLVM_CLANG
        default COMPILER_GCC
        help
          This option allows you to select the compiler used for building
          coreboot.
          You must build the coreboot crosscompiler for the board that you
          have selected.

          To build all the GCC crosscompilers (takes a LONG time), run:
            make crossgcc

          For help on individual architectures, run the command:
            make help_toolchain

config COMPILER_GCC
        bool "GCC"
        help
          Use the GNU Compiler Collection (GCC) to build coreboot.

          For details see http://gcc.gnu.org.

config COMPILER_LLVM_CLANG
        bool "LLVM/clang"
        depends on ALLOW_EXPERIMENTAL_CLANG || !CLANG_UNSUPPORTED
        help
          Use LLVM/clang to build coreboot.  To use this, you must build the
          coreboot version of the clang compiler.  Run the command
            make clang
          Note that Clang is not currently working on all architectures.

          For details see http://clang.llvm.org.

endchoice

config CLANG_UNSUPPORTED
        bool
        help
          Set this flag on platforms that do not support building with the
          clang compiler.

config ALLOW_EXPERIMENTAL_CLANG
        bool "Allow experimental LLVM/Clang"
        depends on CLANG_UNSUPPORTED
        help
          On some architectures CLANG does not work that well.
          Use this only to try to get CLANG working.

config ANY_TOOLCHAIN
        bool "Allow building with any toolchain"
        default n
        help
          Many toolchains break when building coreboot since it uses quite
          unusual linker features. Unless developers explicitly request it,
          we'll have to assume that they use their distro compiler by mistake.
          Make sure that using patched compilers is a conscious decision.

config CCACHE
        bool "Use ccache to speed up (re)compilation"
        help
          Enables the use of ccache for faster builds.

          Requires the ccache utility in your system $PATH.

          For details see https://ccache.samba.org.

config LTO
        bool "Use link time optimization (LTO) (experimental)"
        default n
        help
          Compile with link time optimization. This can often decrease the
          final binary size, but may increase compilation time.

config IWYU
        bool "Test platform with include-what-you-use"
        help
          This runs each source file through the include-what-you-use tool
          to check the header includes.

config FMD_GENPARSER
        bool "Generate flashmap descriptor parser using flex and bison"
        default n
        help
          Enable this option if you are working on the flashmap descriptor
          parser and made changes to fmd_scanner.l or fmd_parser.y.

          Otherwise, say N to use the provided pregenerated scanner/parser.

config UTIL_GENPARSER
        bool "Generate parsers for bincfg, sconfig and kconfig locally"
        default n
        help
          Enable this option if you are working on the sconfig device tree
          parser or bincfg and made changes to the .l or .y files.

          Otherwise, say N to use the provided pregenerated scanner/parser.

choice
        prompt "Option backend to use"
        default USE_MAINBOARD_SPECIFIC_OPTION_BACKEND if HAVE_MAINBOARD_SPECIFIC_OPTION_BACKEND
        default USE_OPTION_TABLE if NVRAMCUI_SECONDARY_PAYLOAD
        default USE_UEFI_VARIABLE_STORE if DRIVERS_EFI_VARIABLE_STORE && \
                PAYLOAD_EDK2 && SMMSTORE_V2

config OPTION_BACKEND_NONE
        bool "None"

config USE_OPTION_TABLE
        bool "Use CMOS for configuration values"
        depends on HAVE_OPTION_TABLE
        help
          Enable this option if coreboot shall read options from the "CMOS"
          NVRAM instead of using hard-coded values.

config USE_UEFI_VARIABLE_STORE
        bool "Use UEFI variable-store in SPI flash as option backend"
        depends on DRIVERS_EFI_VARIABLE_STORE
        depends on SMMSTORE_V2
        help
          Enable this option if coreboot shall read/write options from the
          SMMSTORE region within the SPI flash. The region must be formatted
          by the payload first before it can be used.

config USE_MAINBOARD_SPECIFIC_OPTION_BACKEND
        bool "Use mainboard-specific option backend"
        depends on HAVE_MAINBOARD_SPECIFIC_OPTION_BACKEND
        help
          Use a mainboard-specific mechanism to access runtime-configurable
          options.

endchoice

config STATIC_OPTION_TABLE
        bool "Load default configuration values into CMOS on each boot"
        depends on USE_OPTION_TABLE
        help
          Enable this option to reset "CMOS" NVRAM values to default on
          every boot.  Use this if you want the NVRAM configuration to
          never be modified from its default values.

config MB_COMPRESS_RAMSTAGE_LZ4
        bool
        help
          Select this in a mainboard to use LZ4 compression by default

choice
        prompt "Ramstage compression"
        depends on HAVE_RAMSTAGE && !UNCOMPRESSED_RAMSTAGE
        default COMPRESS_RAMSTAGE_LZ4 if MB_COMPRESS_RAMSTAGE_LZ4
        default COMPRESS_RAMSTAGE_LZMA

config COMPRESS_RAMSTAGE_LZMA
        bool "Compress ramstage with LZMA"
        help
          Compress ramstage with LZMA to save memory in the flash image.

config COMPRESS_RAMSTAGE_LZ4
        bool "Compress ramstage with LZ4"
        help
          LZ4 doesn't give as good compression as LZMA, but decompresses much
          faster. For large binaries such as ramstage, it's typically best to
          use LZMA, but there can be cases where the faster decompression of
          LZ4 can lead to a faster boot time. Testing on each individual board
          is typically going to be needed due to the large number of factors
          that can influence the decision. Binary size, CPU speed, ROM read
          speed, cache, and other factors all play a part.

          If you're not sure, stick with LZMA.

endchoice

config COMPRESS_PRERAM_STAGES
        bool "Compress romstage and verstage with LZ4"
        depends on (HAVE_ROMSTAGE || HAVE_VERSTAGE) && NO_XIP_EARLY_STAGES
        # Default value set at the end of the file
        help
          Compress romstage and (if it exists) verstage with LZ4 to save flash
          space and speed up boot, since the time for reading the image from SPI
          (and in the vboot case verifying it) is usually much greater than the
          time spent decompressing. Doesn't work for XIP stages for obvious
          reasons.

config COMPRESS_BOOTBLOCK
        bool
        depends on HAVE_BOOTBLOCK
        help
          This option can be used to compress the bootblock with LZ4 and attach
          a small self-decompression stub to its front. This can drastically
          reduce boot time on platforms where the bootblock is loaded over a
          very slow connection and bootblock size trumps all other factors for
          speed. Since using this option usually requires changes to the
          SoC memlayout and possibly extra support code, it should not be
          user-selectable. (There's no real point in offering this to the user
          anyway... if it works and saves boot time, you would always want it.)

config SEPARATE_ROMSTAGE
        bool "Build a separate romstage"
        help
          Build a separate romstage that is loaded by bootblock. With this
          option disabled the romstage sources are linked inside the bootblock
          as a single stage.

config INCLUDE_CONFIG_FILE
        bool "Include the coreboot .config file into the ROM image"
        # Default value set at the end of the file
        help
          Include the .config file that was used to compile coreboot
          in the (CBFS) ROM image. This is useful if you want to know which
          options were used to build a specific coreboot.rom image.

          Saying Y here will increase the image size by 2-3KB.

          You can then use cbfstool to extract the config from a final image:

            cbfstool coreboot.rom extract -n config -f <output file path>

          Alternatively, you can also use cbfstool to print the image
          contents (including the raw 'config' item we're looking for).

          Example:

            $ cbfstool coreboot.rom print
            coreboot.rom: 4096 kB, bootblocksize 1008, romsize 4194304,
                                                       offset 0x0
            Alignment: 64 bytes

            Name                           Offset     Type         Size
            cmos_layout.bin                0x0        CMOS layout  1159
            fallback/romstage              0x4c0      stage        339756
            fallback/ramstage              0x53440    stage        186664
            fallback/payload               0x80dc0    payload      51526
            config                         0x8d740    raw          3324
            (empty)                        0x8e480    null         3610440

config COLLECT_TIMESTAMPS
        bool "Create a table of timestamps collected during boot"
        default y if ARCH_X86
        help
          Make coreboot create a table of timer-ID/timer-value pairs to
          allow measuring time spent at different phases of the boot process.

config TIMESTAMPS_ON_CONSOLE
        bool "Print the timestamp values on the console"
        default n
        depends on COLLECT_TIMESTAMPS
        help
          Print the timestamps to the debug console if enabled at level info.

config USE_BLOBS
        bool "Allow use of binary-only repository"
        default y
        help
          This draws in the blobs repository, which contains binary files that
          might be required for some chipsets or boards.
          This flag ensures that a "Free" option remains available for users.

config USE_AMD_BLOBS
        bool "Allow AMD blobs repository (with license agreement)"
        depends on USE_BLOBS
        help
          This draws in the amd_blobs repository, which contains binary files
          distributed by AMD, including VBIOS, PSP bootloaders, SMU firmwares,
          etc.  Selecting this item to download or clone the repo implies your
          agreement to the AMD license agreement.  A copy of the license text
          may be reviewed by reading Documentation/soc/amd/amdblobs_license.md,
          and your copy of the license is present in the repo once downloaded.

          Note that for some products, omitting PSP, SMU images, or other items
          may result in a nonbooting coreboot.rom.

config USE_QC_BLOBS
        bool "Allow QC blobs repository (selecting this agrees to the license!)"
        depends on USE_BLOBS
        help
          This draws in the qc_blobs repository, which contains binary files
          distributed by Qualcomm that are required to build firmware for
          certain Qualcomm SoCs (including QcLib, QC-SEC, qtiseclib and QUP
          firmware). If you say Y here you are implicitly agreeing to the
          Qualcomm license agreement which can be found at:
          https://review.coreboot.org/cgit/qc_blobs.git/tree/LICENSE

          *****************************************************
          PLEASE MAKE SURE YOU READ AND AGREE TO ALL TERMS IN
          ABOVE LICENSE AGREEMENT BEFORE SELECTING THIS OPTION!
          *****************************************************

          Not selecting this option means certain Qualcomm SoCs and related
          mainboards cannot be built and will be hidden from the "Mainboards"
          section.

config COVERAGE
        bool "Code coverage support"
        depends on COMPILER_GCC
        help
          Add code coverage support for coreboot. This will store code
          coverage information in CBMEM for extraction from user space.
          If unsure, say N.

config UBSAN
        bool "Undefined behavior sanitizer support"
        default n
        help
          Instrument the code with checks for undefined behavior. If unsure,
          say N because it adds a small performance penalty and may abort
          on code that happens to work in spite of the UB.

config HAVE_ASAN_IN_ROMSTAGE
        bool
        default n

config ASAN_IN_ROMSTAGE
        bool
        default n
        help
          Enable address sanitizer in romstage for platform.

config HAVE_ASAN_IN_RAMSTAGE
        bool
        default n

config ASAN_IN_RAMSTAGE
        bool
        default n
        help
          Enable address sanitizer in ramstage for platform.

config ASAN
        bool "Address sanitizer support"
        default n
        select ASAN_IN_ROMSTAGE if HAVE_ASAN_IN_ROMSTAGE
        select ASAN_IN_RAMSTAGE if HAVE_ASAN_IN_RAMSTAGE
        depends on COMPILER_GCC
        help
          Enable address sanitizer - runtime memory debugger,
          designed to find out-of-bounds accesses and use-after-scope bugs.

          This feature consumes up to 1/8 of available memory and brings about
          ~1.5x performance slowdown.

          If unsure, say N.

if ASAN
        comment "Before using this feature, make sure that           "
        comment "asan_shadow_offset_callback patch is applied to GCC."
endif

choice
        prompt "Stage Cache for ACPI S3 resume"
        default NO_STAGE_CACHE if !HAVE_ACPI_RESUME || MAINBOARD_DISABLE_STAGE_CACHE
        default TSEG_STAGE_CACHE if SMM_TSEG

config NO_STAGE_CACHE
        bool "Disabled"
        help
          Do not save any component in stage cache for resume path. On resume,
          all components would be read back from CBFS again.

config TSEG_STAGE_CACHE
        bool "TSEG"
        depends on SMM_TSEG
        help
          The option enables stage cache support for platform. Platform
          can stash copies of postcar, ramstage and raw runtime data
          inside SMM TSEG, to be restored on S3 resume path.

config CBMEM_STAGE_CACHE
        bool "CBMEM"
        depends on !SMM_TSEG
        help
          The option enables stage cache support for platform. Platform
          can stash copies of postcar, ramstage and raw runtime data
          inside CBMEM.

          While the approach is faster than reloading stages from boot media
          it is also a possible attack scenario via which OS can possibly
          circumvent SMM locks and SPI write protections.

          If unsure, select 'N'

endchoice

config MAINBOARD_DISABLE_STAGE_CACHE
        bool
        help
          Selected by mainboards which wish to disable the stage cache.
          E.g. mainboards which don't use S3 resume in the field may wish to
          disable it to save boot time at the cost of increasing S3 resume time.

config UPDATE_IMAGE
        bool "Update existing coreboot.rom image"
        help
          If this option is enabled, no new coreboot.rom file
          is created. Instead it is expected that there already
          is a suitable file for further processing.
          The bootblock will not be modified.

          If unsure, select 'N'

config BOOTSPLASH_IMAGE
        bool "Add a bootsplash image"
        help
          Select this option if you have a bootsplash image that you would
          like to add to your ROM.

          This will only add the image to the ROM. To actually run it check
          options under 'Display' section.

config BOOTSPLASH_FILE
        string "Bootsplash path and filename"
        depends on BOOTSPLASH_IMAGE
        # Default value set at the end of the file
        help
          The path and filename of the file to use as graphical bootsplash
          screen. The file format has to be JPEG with YCC 4:2:0 color sampling
          unless converted with "Pre-process bootsplash file with ImageMagick".

          The image can only be displayed by coreboot if it's smaller or has
          the same size as the framebuffer resolution. Width and height have
          to be a multiple of 16 pixels.

          Setting these constraints allows a leaner implementation in coreboot.
          The minimum necessary ImageMagick command line seems to be:
          $ convert input.img -colorspace YCC -sampling-factor 4:2:0 bootsplash.jpg

config BOOTSPLASH_CONVERT
        bool "Pre-process bootsplash file with ImageMagick"
        depends on BOOTSPLASH_IMAGE
        help
          Use ImageMagick (`convert` program) to convert a bootsplash image
          to the supported JPEG format.

config BOOTSPLASH_CONVERT_QUALITY
        int "Bootsplash JPEG target quality (%)"
        depends on BOOTSPLASH_CONVERT
        range 1 100
        # Default value set at the end of the file

config BOOTSPLASH_CONVERT_RESIZE
        bool "Resize bootsplash image"
        depends on BOOTSPLASH_CONVERT
        help
          Resize the image to the given resolution. Aspect ratio will be kept,
          adding black bars as necessary.

config BOOTSPLASH_CONVERT_RESOLUTION
        string "Bootsplash image target size"
        depends on BOOTSPLASH_CONVERT_RESIZE
        # Default value set at the end of the file
        help
          Target image resolution given as <width>x<height>, e.g. 1024x768.
          Values not divisible by 16 will be rounded down.

          When using coreboot to display the bootsplash image (CONFIG_BOOTSPLASH),
          set this lower or equal to the minimum resolution you expect.

config BOOTSPLASH_CONVERT_COLORSWAP
        bool "Swap red and blue color channels"
        depends on BOOTSPLASH_CONVERT
        help
          The JPEG decoder currently ignores the framebuffer color order.
          If your colors seem all wrong, try this option.

config FW_CONFIG
        bool
        help
          Enable support for probing devices with fw_config.  This is a simple
          bitmask broken into fields and options for probing.
          Select this option in the Mainboard Kconfig.

config FW_CONFIG_SOURCE_CHROMEEC_CBI
        bool
        depends on FW_CONFIG && EC_GOOGLE_CHROMEEC
        help
          This option tells coreboot to read the firmware configuration value
          from the Google Chrome Embedded Controller CBI interface.  This source
          is not tried if FW_CONFIG_SOURCE_CBFS is enabled and the value was
          found in CBFS.
          Select this option in the Mainboard Kconfig.

config FW_CONFIG_SOURCE_CBFS
        bool "Obtain Firmware Configuration value from CBFS"
        depends on FW_CONFIG
        help
          With this option enabled coreboot will look for the 32bit firmware
          configuration value in CBFS at the selected prefix with the file name
          "fw_config".  This option gets run if no value is found with CBI, so acts
          as a FW_CONFIG_SOURCE_CHROMEEC_CBI fallback option.

config FW_CONFIG_SOURCE_VPD
        bool "Obtain Firmware Configuration value from VPD"
        depends on FW_CONFIG && VPD
        help
          With this option enabled coreboot will look for the 32bit firmware
          configuration value in VPD key name "fw_config".  This option runs if no
          FW_CONFIG value is set by either CBI or CBFS.

config HAVE_RAMPAYLOAD
        bool

config RAMPAYLOAD
        bool "Enable coreboot flow without executing ramstage"
        default y if ARCH_X86
        depends on HAVE_RAMPAYLOAD
        help
          If this option is enabled, coreboot flow will skip ramstage
          loading and execution of ramstage to load payload.

          Instead it is expected to load payload from postcar stage itself.

          In this flow coreboot will perform basic x86 initialization
          (DRAM resource allocation), MTRR programming,
          Skip PCI enumeration logic and only allocate BAR for fixed devices
          (bootable devices, TPM over GSPI).

config HAVE_CONFIGURABLE_RAMSTAGE
        bool

config CONFIGURABLE_RAMSTAGE
        bool "Enable a configurable ramstage."
        default y if ARCH_X86
        depends on HAVE_CONFIGURABLE_RAMSTAGE
        help
          A configurable ramstage allows you to select which parts of the ramstage
          to run. Currently, we can only select a minimal PCI scanning step.
          The minimal PCI scanning will only check those parts that are enabled
          in the devicetree.cb. By convention none of those devices should be bridges.

config MINIMAL_PCI_SCANNING
        bool "Enable minimal PCI scanning"
        depends on CONFIGURABLE_RAMSTAGE && PCI
        help
          If this option is enabled, coreboot will scan only PCI devices
          marked as mandatory in devicetree.cb

menu "Software Bill Of Materials (SBOM)"

source "src/sbom/Kconfig"

endmenu
endmenu

menu "Mainboard"

source "src/mainboard/Kconfig"

config DEVICETREE
        string
        default "devicetree.cb"
        help
          This symbol allows mainboards to select a different file under their
          mainboard directory for the devicetree.cb file.  This allows the board
          variants that need different devicetrees to be in the same directory.

          Examples: "devicetree.variant.cb"
                    "variant/devicetree.cb"

config OVERRIDE_DEVICETREE
        string
        default ""
        help
          This symbol allows variants to provide an override devicetree file to
          override the registers and/or add new devices on top of the ones
          provided by baseboard devicetree using CONFIG_DEVICETREE.

          Examples: "devicetree.variant-override.cb"
                    "variant/devicetree-override.cb"

config FMDFILE
        string "fmap description file in fmd format"
        default "src/mainboard/\$(CONFIG_MAINBOARD_DIR)/chromeos.fmd" if CHROMEOS
        default ""
        help
          The build system creates a default FMAP from ROM_SIZE and CBFS_SIZE,
          but in some cases more complex setups are required.
          When an fmd is specified, it overrides the default format.

config CBFS_SIZE
        hex "Size of CBFS filesystem in ROM"
        depends on FMDFILE = ""
        # Default value set at the end of the file
        help
          This is the part of the ROM actually managed by CBFS, located at the
          end of the ROM (passed through cbfstool -o) on x86 and at the start
          of the ROM (passed through cbfstool -s) everywhere else. It defaults
          to span the whole ROM on all but Intel systems that use an Intel Firmware
          Descriptor.  It can be overridden to make coreboot live alongside other
          components like ChromeOS's vboot/FMAP or Intel's IFD / ME / TXE
          binaries. This symbol should only be used to generate a default FMAP and
          is unused when a non-default fmd file is provided via CONFIG_FMDFILE.

endmenu

# load site-local kconfig to allow user specific defaults and overrides
source "site-local/Kconfig"

config SYSTEM_TYPE_LAPTOP
        default n
        bool

config SYSTEM_TYPE_TABLET
        default n
        bool

config SYSTEM_TYPE_DETACHABLE
        default n
        bool

config SYSTEM_TYPE_CONVERTIBLE
        default n
        bool

config CBFS_AUTOGEN_ATTRIBUTES
        default n
        bool
        help
          If this option is selected, every file in cbfs which has a constraint
          regarding position or alignment will get an additional file attribute
          which describes this constraint.

menu "Chipset"

comment "SoC"
source "src/soc/*/*/Kconfig"
source "src/soc/*/*/Kconfig.common"
comment "CPU"
source "src/cpu/Kconfig"
comment "Northbridge"
source "src/northbridge/*/*/Kconfig"
source "src/northbridge/*/*/Kconfig.common"
comment "Southbridge"
source "src/southbridge/*/*/Kconfig"
source "src/southbridge/*/*/Kconfig.common"
comment "Super I/O"
source "src/superio/*/*/Kconfig"
comment "Embedded Controllers"
source "src/ec/acpi/Kconfig"
source "src/ec/*/*/Kconfig"

source "src/southbridge/intel/common/firmware/Kconfig"
source "src/vendorcode/*/Kconfig"

source "src/arch/*/Kconfig"

config CHIPSET_DEVICETREE
        string
        default ""
        help
          This symbol allows a chipset to provide a set of default settings in
          a devicetree which are common to all mainboards. This may include
          devices (including alias names), chip drivers, register settings,
          and others. This path is relative to the src/ directory.

          Example: "chipset.cb"

endmenu

source "src/device/Kconfig"

menu "Generic Drivers"
source "src/drivers/*/Kconfig"
source "src/drivers/*/*/Kconfig"
source "src/drivers/*/*/*/Kconfig"
source "src/commonlib/storage/Kconfig"
endmenu

menu "Security"

source "src/security/Kconfig"
source "src/vendorcode/eltan/security/Kconfig"

endmenu

source "src/acpi/Kconfig"

# This option is for the current boards/chipsets where SPI flash
# is not the boot device. Currently nearly all boards/chipsets assume
# SPI flash is the boot device.
config BOOT_DEVICE_NOT_SPI_FLASH
        bool
        default n

config BOOT_DEVICE_SPI_FLASH
        bool
        default y if !BOOT_DEVICE_NOT_SPI_FLASH
        default n

config BOOT_DEVICE_MEMORY_MAPPED
        bool
        default y if ARCH_X86 && BOOT_DEVICE_SPI_FLASH
        default n
        help
          Inform system if SPI is memory-mapped or not.

config BOOT_DEVICE_SUPPORTS_WRITES
        bool
        default n
        help
          Indicate that the platform has writable boot device
          support.

config RTC
        bool
        default n

config HEAP_SIZE
        hex
        default 0x100000

config STACK_SIZE
        hex
        default 0x2000 if ARCH_X86
        default 0x0

config MAX_CPUS
        int
        default 1

source "src/console/Kconfig"

config ACPI_S1_NOT_SUPPORTED
        bool
        default n
        help
          Set this to 'y' on platforms that do not support ACPI S1 state.

config HAVE_ACPI_RESUME
        bool
        default n

config DISABLE_ACPI_HIBERNATE
        bool
        default n
        help
          Removes S4 from the available sleepstates

config RESUME_PATH_SAME_AS_BOOT
        bool
        default y if ARCH_X86
        depends on HAVE_ACPI_RESUME
        help
          This option indicates that when a system resumes it takes the
          same path as a regular boot. e.g. an x86 system runs from the
          reset vector at 0xfffffff0 on both resume and warm/cold boot.

config NO_MONOTONIC_TIMER
        def_bool n

config HAVE_MONOTONIC_TIMER
        bool
        depends on !NO_MONOTONIC_TIMER
        default y
        help
         The board/chipset provides a monotonic timer.

config GENERIC_UDELAY
        bool
        depends on HAVE_MONOTONIC_TIMER
        default y if !ARCH_X86
        help
         The board/chipset uses a generic udelay function utilizing the
         monotonic timer.

config TIMER_QUEUE
        def_bool n
        depends on HAVE_MONOTONIC_TIMER
        help
          Provide a timer queue for performing time-based callbacks.

config COOP_MULTITASKING
        def_bool n
        select TIMER_QUEUE
        depends on ARCH_X86
        help
          Cooperative multitasking allows callbacks to be multiplexed on the
          main thread. With this enabled it allows for multiple execution paths
          to take place when they have udelay() calls within their code.

config NUM_THREADS
        int
        default 4
        depends on COOP_MULTITASKING
        help
          How many execution threads to cooperatively multitask with.

config HAVE_MAINBOARD_SPECIFIC_OPTION_BACKEND
        bool
        help
          Selected by mainboards which implement a mainboard-specific mechanism
          to access the values for runtime-configurable options. For example, a
          custom BMC interface or an EEPROM with an externally-imposed layout.

config HAVE_OPTION_TABLE
        bool
        default n
        help
          This variable specifies whether a given board has a cmos.layout
          file containing NVRAM/CMOS bit definitions.
          It defaults to 'n' but can be selected in mainboard/*/Kconfig.

config CMOS_LAYOUT_FILE
        string
        default "src/mainboard/\$(MAINBOARDDIR)/cmos.layout"
        depends on HAVE_OPTION_TABLE

config PCI_IO_CFG_EXT
        bool
        default n

config IOAPIC
        bool
        default y if SMP
        default n

config USE_WATCHDOG_ON_BOOT
        bool
        default n

config GFXUMA
        bool
        default n
        help
          Enable Unified Memory Architecture for graphics.

config HAVE_MP_TABLE
        bool
        help
          This variable specifies whether a given board has MP table support.
          It is usually set in mainboard/*/Kconfig.
          Whether or not the MP table is actually generated by coreboot
          is configurable by the user via GENERATE_MP_TABLE.

config HAVE_PIRQ_TABLE
        bool
        help
          This variable specifies whether a given board has PIRQ table support.
          It is usually set in mainboard/*/Kconfig.
          Whether or not the PIRQ table is actually generated by coreboot
          is configurable by the user via GENERATE_PIRQ_TABLE.

config ACPI_NHLT
        bool
        default n
        help
          Build support for NHLT (non HD Audio) ACPI table generation.

#These Options are here to avoid "undefined" warnings.
#The actual selection and help texts are in the following menu.

menu "System tables"

config GENERATE_MP_TABLE
        prompt "Generate an MP table" if HAVE_MP_TABLE
        bool
        depends on !ECAM_MMCONF_SUPPORT || ECAM_MMCONF_BUS_NUMBER <= 256
        default HAVE_MP_TABLE
        help
          Generate an MP table (conforming to the Intel MultiProcessor
          specification 1.4) for this board.

          If unsure, say Y.

config GENERATE_PIRQ_TABLE
        prompt "Generate a PIRQ table" if HAVE_PIRQ_TABLE
        bool
        default HAVE_PIRQ_TABLE
        help
          Generate a PIRQ table for this board.

          If unsure, say Y.

config GENERATE_SMBIOS_TABLES
        depends on ARCH_X86 || ARCH_ARM64
        bool "Generate SMBIOS tables"
        default n if ARCH_ARM64
        default y
        help
          Generate SMBIOS tables for this board.

          If unsure, say Y.

config SMBIOS_TYPE41_PROVIDED_BY_DEVTREE
        bool
        depends on ARCH_X86
        help
          If enabled, only generate SMBIOS Type 41 entries for PCI devices in
          the devicetree for which Type 41 information is provided, e.g. with
          the `smbios_dev_info` devicetree syntax. This is useful to manually
          assign specific instance IDs to onboard devices irrespective of the
          device traversal order. It is assumed that instance IDs for devices
          of the same class are unique.
          When disabled, coreboot autogenerates SMBIOS Type 41 entries for all
          appropriate PCI devices in the devicetree. Instance IDs are assigned
          successive numbers from a monotonically increasing counter, with one
          counter for each device class.

config SMBIOS_PROVIDED_BY_MOBO
        bool
        default n

if GENERATE_SMBIOS_TABLES

config BIOS_VENDOR
        prompt "SMBIOS BIOS Vendor name"
        string
        default "coreboot"
        help
          The BIOS Vendor name to store in the SMBIOS Type0 table.

config MAINBOARD_SERIAL_NUMBER
        prompt "SMBIOS Serial Number" if !SMBIOS_PROVIDED_BY_MOBO
        string
        default "123456789"
        help
          The Serial Number to store in SMBIOS structures.

config MAINBOARD_VERSION
        prompt "SMBIOS Version Number" if !SMBIOS_PROVIDED_BY_MOBO
        string
        default "1.0"
        help
          The Version Number to store in SMBIOS structures.

config MAINBOARD_SMBIOS_MANUFACTURER
        prompt "SMBIOS Manufacturer" if !SMBIOS_PROVIDED_BY_MOBO
        string
        default MAINBOARD_VENDOR
        help
          Override the default Manufacturer stored in SMBIOS structures.

config MAINBOARD_SMBIOS_PRODUCT_NAME
        prompt "SMBIOS Product name" if !SMBIOS_PROVIDED_BY_MOBO
        string
        default MAINBOARD_PART_NUMBER
        help
          Override the default Product name stored in SMBIOS structures.

config VPD_SMBIOS_VERSION
        bool "Populates SMBIOS type 0 version from the VPD_RO variable 'firmware_version'"
        default n
        depends on VPD
        help
          Selecting this option will read firmware_version from
          VPD_RO and override SMBIOS type 0 version. One special
          scenario of using this feature is to assign a BIOS version
          to a coreboot image without the need to rebuild from source.

endif

endmenu

source "payloads/Kconfig"

menu "Debugging"

comment "CPU Debug Settings"
source "src/cpu/*/Kconfig.debug_cpu"

comment "Vendorcode Debug Settings"
        source "src/vendorcode/*/*/Kconfig.debug"

comment "BLOB Debug Settings"
source "src/drivers/intel/fsp*/Kconfig.debug_blob"

comment "General Debug Settings"

# TODO: Better help text and detailed instructions.
config GDB_STUB
        bool "GDB debugging support"
        default n
# FIXME Not implemented in long mode
        depends on DRIVERS_UART && !USE_X86_64_SUPPORT
        help
          If enabled, you will be able to set breakpoints for gdb debugging.
          See src/arch/x86/c_start.S for details.

config GDB_WAIT
        bool "Wait for a GDB connection in the ramstage"
        default n
        depends on GDB_STUB
        help
          If enabled, coreboot will wait for a GDB connection in the ramstage.


config FATAL_ASSERTS
        bool "Halt when hitting a BUG() or assertion error"
        default n
        help
          If enabled, coreboot will call hlt() on a BUG() or failed ASSERT().

config HAVE_DEBUG_GPIO
        bool

config DEBUG_GPIO
        bool "Output verbose GPIO debug messages"
        depends on HAVE_DEBUG_GPIO

config DEBUG_CBFS
        bool "Output verbose CBFS debug messages"
        default n
        help
          This option enables additional CBFS related debug messages.

config HAVE_DEBUG_RAM_SETUP
        def_bool n

config DEBUG_RAM_SETUP
        bool "Output verbose RAM init debug messages"
        default n
        depends on HAVE_DEBUG_RAM_SETUP
        help
          This option enables additional RAM init related debug messages.
          It is recommended to enable this when debugging issues on your
          board which might be RAM init related.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config DEBUG_PIRQ
        bool "Check PIRQ table consistency"
        default n
        depends on GENERATE_PIRQ_TABLE
        help
          If unsure, say N.

config HAVE_DEBUG_SMBUS
        def_bool n

config DEBUG_SMBUS
        bool "Output verbose SMBus debug messages"
        default n
        depends on HAVE_DEBUG_SMBUS
        help
          This option enables additional SMBus (and SPD) debug messages.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config DEBUG_SMI
        bool "Output verbose SMI debug messages"
        default n
        depends on HAVE_SMI_HANDLER
        select SPI_FLASH_SMM if EM100PRO_SPI_CONSOLE || CONSOLE_SPI_FLASH
        help
          This option enables additional SMI related debug messages.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config DEBUG_PERIODIC_SMI
        bool "Trigger SMI periodically"
        depends on DEBUG_SMI

# Only visible if debug level is DEBUG (7) or SPEW (8) as it does additional
# printk(BIOS_DEBUG, ...) calls.
config DEBUG_MALLOC
        prompt "Output verbose malloc debug messages" if DEFAULT_CONSOLE_LOGLEVEL_7 || DEFAULT_CONSOLE_LOGLEVEL_8 || CONSOLE_OVERRIDE_LOGLEVEL
        bool
        default n
        help
          This option enables additional malloc related debug messages.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

# Only visible if DEBUG_SPEW (8) is set.
config DEBUG_RESOURCES
        bool "Output verbose PCI MEM and IO resource debug messages" if DEFAULT_CONSOLE_LOGLEVEL_8 || CONSOLE_OVERRIDE_LOGLEVEL
        default n
        help
          This option enables additional PCI memory and IO debug messages.
          Note: This option will increase the size of the coreboot image.
          If unsure, say N.

config DEBUG_CONSOLE_INIT
        bool "Debug console initialisation code"
        default n
        help
          With this option printk()'s are attempted before console hardware
          initialisation has been completed. Your mileage may vary.

          Typically you will need to modify source in console_hw_init() such
          that a working console appears before the one you want to debug.

          If unsure, say N.

# Only visible if debug level is DEBUG (7) or SPEW (8) as it does additional
# printk(BIOS_DEBUG, ...) calls.
config REALMODE_DEBUG
        prompt "Enable debug messages for option ROM execution" if DEFAULT_CONSOLE_LOGLEVEL_7 || DEFAULT_CONSOLE_LOGLEVEL_8 || CONSOLE_OVERRIDE_LOGLEVEL
        bool
        default n
        depends on PCI_OPTION_ROM_RUN_REALMODE
        help
          This option enables additional x86emu related debug messages.

          Note: This option will increase the time to emulate a ROM.

          If unsure, say N.

config X86EMU_DEBUG
        bool "Output verbose x86emu debug messages"
        default n
        depends on PCI_OPTION_ROM_RUN_YABEL
        help
          This option enables additional x86emu related debug messages.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

if X86EMU_DEBUG

config X86EMU_DEBUG_JMP
        bool "Trace JMP/RETF"
        default n
        help
          Print information about JMP and RETF opcodes from x86emu.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_TRACE
        bool "Trace all opcodes"
        default n
        help
          Print _all_ opcodes that are executed by x86emu.

          WARNING: This will produce a LOT of output and take a long time.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_PNP
        bool "Log Plug&Play accesses"
        default n
        help
          Print Plug And Play accesses made by option ROMs.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_DISK
        bool "Log Disk I/O"
        default n
        help
          Print Disk I/O related messages.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_PMM
        bool "Log PMM"
        default n
        help
          Print messages related to POST Memory Manager (PMM).

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.


config X86EMU_DEBUG_VBE
        bool "Debug VESA BIOS Extensions"
        default n
        help
          Print messages related to VESA BIOS Extension (VBE) functions.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_INT10
        bool "Redirect INT10 output to console"
        default n
        help
          Let INT10 (i.e. character output) calls print messages to debug output.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_INTERRUPTS
        bool "Log intXX calls"
        default n
        help
          Print messages related to interrupt handling.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_CHECK_VMEM_ACCESS
        bool "Log special memory accesses"
        default n
        help
          Print messages related to accesses to certain areas of the virtual
          memory (e.g. BDA (BIOS Data Area) or interrupt vectors)

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_MEM
        bool "Log all memory accesses"
        default n
        help
          Print memory accesses made by option ROM.
          Note: This also includes accesses to fetch instructions.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_IO
        bool "Log IO accesses"
        default n
        help
          Print I/O accesses made by option ROM.

          Note: This option will increase the size of the coreboot image.

          If unsure, say N.

config X86EMU_DEBUG_TIMINGS
        bool "Output timing information"
        default n
        depends on HAVE_MONOTONIC_TIMER
        help
          Print timing information needed by i915tool.

          If unsure, say N.

endif

config DEBUG_SPI_FLASH
        bool "Output verbose SPI flash debug messages"
        default n
        depends on SPI_FLASH
        help
          This option enables additional SPI flash related debug messages.

config DEBUG_IPMI
        bool "Output verbose IPMI debug messages"
        default n
        depends on IPMI_KCS
        help
          This option enables additional IPMI related debug messages.

if SOUTHBRIDGE_INTEL_BD82X6X && DEFAULT_CONSOLE_LOGLEVEL_8
# Only visible with the right southbridge and loglevel.
config DEBUG_INTEL_ME
        bool "Verbose logging for Intel Management Engine"
        default n
        help
          Enable verbose logging for Intel Management Engine driver that
          is present on Intel 6-series chipsets.
endif

config DEBUG_FUNC
        bool "Enable function entry and exit reporting macros" if DEFAULT_CONSOLE_LOGLEVEL_8 || CONSOLE_OVERRIDE_LOGLEVEL
        default n
        help
          This option enables additional function entry and exit debug messages
          for select functions.
          Note: This option will increase the size of the coreboot image.
          If unsure, say N.

config DEBUG_COVERAGE
        bool "Debug code coverage"
        default n
        depends on COVERAGE
        help
          If enabled, the code coverage hooks in coreboot will output some
          information about the coverage data that is dumped.

config DEBUG_BOOT_STATE
        bool "Debug boot state machine"
        default n
        help
          Control debugging of the boot state machine.  When selected displays
          the state boundaries in ramstage.

config DEBUG_ADA_CODE
        bool "Compile debug code in Ada sources"
        default n
        help
          Add the compiler switch `-gnata` to compile code guarded by
          `pragma Debug`.

config HAVE_EM100_SUPPORT
        bool
        help
          This is enabled by platforms which can support using the EM100.

config EM100
        bool "Configure image for EM100 usage"
        depends on HAVE_EM100_SUPPORT
        help
          The Dediprog EM100 SPI emulator allows fast loading of new SPI images
          over USB. However it only supports a maximum SPI clock of 20MHz and
          single data output. Enable this option to use a 20MHz SPI clock and
          disable "Dual Output Fast Read" Support.

          On AMD platforms this changes the SPI speed at run-time if the
          mainboard code supports this. On supported Intel platforms this works
          by changing the settings in the descriptor.bin file.

config DEBUG_ACPICA_COMPATIBLE
        bool "Print out ACPI tables in ACPICA compatible format"
        depends on HAVE_ACPI_TABLES
        help
          Select this to print out ACPI tables in an ACPICA compatible
          format. Set the console loglevel to verbosity 'SPEW'.
          To analyze ACPI tables capture the coreboot log between
          "Printing ACPI in ACPICA compatible table" and "Done printing
          ACPI in ACPICA compatible table".
          Remove the prefix "[SPEW ]  " and then issue 'acpixtract -a dump'
          to extract all the tables. Then use 'iasl -d' on the .dat files
          to decompile the tables.

endmenu

###############################################################################
# Set variables with no prompt - these can be set anywhere, and putting at
# the end of this file gives the most flexibility.

source "src/lib/Kconfig"

config WARNINGS_ARE_ERRORS
        bool
        default y

# The four POWER_BUTTON_DEFAULT_ENABLE, POWER_BUTTON_DEFAULT_DISABLE,
# POWER_BUTTON_FORCE_ENABLE and POWER_BUTTON_FORCE_DISABLE options are
# mutually exclusive. One of these options must be selected in the
# mainboard Kconfig if the chipset supports enabling and disabling of
# the power button. Chipset code uses the ENABLE_POWER_BUTTON option set
# in mainboard/Kconfig to know if the button should be enabled or not.

config POWER_BUTTON_DEFAULT_ENABLE
        def_bool n
        help
          Select when the board has a power button which can optionally be
          disabled by the user.

config POWER_BUTTON_DEFAULT_DISABLE
        def_bool n
        help
          Select when the board has a power button which can optionally be
          enabled by the user, e.g. when the board ships with a jumper over
          the power switch contacts.

config POWER_BUTTON_FORCE_ENABLE
        def_bool n
        help
          Select when the board requires that the power button is always
          enabled.

config POWER_BUTTON_FORCE_DISABLE
        def_bool n
        help
          Select when the board requires that the power button is always
          disabled, e.g. when it has been hardwired to ground.

config POWER_BUTTON_IS_OPTIONAL
        bool
        default y if POWER_BUTTON_DEFAULT_ENABLE || POWER_BUTTON_DEFAULT_DISABLE
        default n if !(POWER_BUTTON_DEFAULT_ENABLE || POWER_BUTTON_DEFAULT_DISABLE)
        help
          Internal option that controls ENABLE_POWER_BUTTON visibility.

config REG_SCRIPT
        bool
        default n
        help
          Internal option that controls whether we compile in register scripts.

config MAX_REBOOT_CNT
        int
        default 3
        help
          Internal option that sets the maximum number of bootblock executions allowed
          with the normal image enabled before assuming the normal image is defective
          and switching to the fallback image.

config UNCOMPRESSED_RAMSTAGE
        bool

config NO_XIP_EARLY_STAGES
        bool
        default n if ARCH_X86
        default y
        help
          Identify if early stages are eXecute-In-Place(XIP).

config EARLY_CBMEM_LIST
        bool
        default n
        help
          Enable display of CBMEM during romstage and postcar.

config RELOCATABLE_MODULES
        bool
        help
          If RELOCATABLE_MODULES is selected then support is enabled for
          building relocatable modules in the RAM stage. Those modules can be
          loaded anywhere and all the relocations are handled automatically.

config GENERIC_GPIO_LIB
        bool
        help
          If enabled, compile the generic GPIO library. A "generic" GPIO
          implies configurability usually found on SoCs, particularly the
          ability to control internal pull resistors.

config BOOTBLOCK_CUSTOM
        # To be selected by arch, SoC or mainboard if it does not want use the normal
        # src/lib/bootblock.c#main() C entry point.
        bool

config BOOTBLOCK_IN_CBFS
        bool
        default y if ARCH_X86
        help
          Select this on platforms that have a top aligned bootblock inside cbfs.

config MEMLAYOUT_LD_FILE
        string
        default "src/mainboard/\$(CONFIG_MAINBOARD_DIR)/memlayout.ld"
        help
          This variable allows SoC/mainboard to supply in a custom linker file
          if required. This determines the linker file used for all the stages
          (bootblock, romstage, verstage, ramstage, postcar) in
          src/arch/${ARCH}/Makefile.mk.

###############################################################################
# Set default values for symbols created before mainboards.  This allows the
# option to be displayed in the general menu, but the default to be loaded in
# the mainboard if desired.
config COMPRESS_PRERAM_STAGES
        depends on (HAVE_ROMSTAGE || HAVE_VERSTAGE) && NO_XIP_EARLY_STAGES
        default y

config INCLUDE_CONFIG_FILE
        default y

config BOOTSPLASH_FILE
        depends on BOOTSPLASH_IMAGE
        default "bootsplash.jpg"

config BOOTSPLASH_CONVERT_QUALITY
        depends on BOOTSPLASH_CONVERT
        default 80

config BOOTSPLASH_CONVERT_RESOLUTION
        depends on BOOTSPLASH_CONVERT_RESIZE
        default "1024x768"

config CBFS_SIZE
        default ROM_SIZE

config HAVE_BOOTBLOCK
        bool
        default y

config HAVE_VERSTAGE
        bool
        depends on VBOOT_SEPARATE_VERSTAGE
        default y

config HAVE_ROMSTAGE
        bool
        depends on SEPARATE_ROMSTAGE
        default y

config HAVE_RAMSTAGE
        bool
        default n if RAMPAYLOAD
        default y

config SEPARATE_ROMSTAGE
        default y