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- #
- # For a description of the syntax of this configuration file,
- # see the file Documentation/kbuild/kconfig-language.txt in the
- # Linux kernel source tree.
- #
- mainmenu "U-Boot $(UBOOTVERSION) Configuration"
- comment "Compiler: $(CC_VERSION_TEXT)"
- source "scripts/Kconfig.include"
- # Allow defaults in arch-specific code to override any given here
- source "arch/Kconfig"
- menu "General setup"
- config BROKEN
- bool
- help
- This option cannot be enabled. It is used as dependency
- for broken and incomplete features.
- config DEPRECATED
- bool
- help
- This option cannot be enabled. It it used as a dependency for
- code that relies on deprecated features that will be removed and
- the conversion deadline has passed.
- config LOCALVERSION
- string "Local version - append to U-Boot release"
- help
- Append an extra string to the end of your U-Boot version.
- This will show up in your boot log, for example.
- The string you set here will be appended after the contents of
- any files with a filename matching localversion* in your
- object and source tree, in that order. Your total string can
- be a maximum of 64 characters.
- config LOCALVERSION_AUTO
- bool "Automatically append version information to the version string"
- default y
- help
- This will try to automatically determine if the current tree is a
- release tree by looking for Git tags that belong to the current
- top of tree revision.
- A string of the format -gxxxxxxxx will be added to the localversion
- if a Git-based tree is found. The string generated by this will be
- appended after any matching localversion* files, and after the value
- set in CONFIG_LOCALVERSION.
- (The actual string used here is the first eight characters produced
- by running the command:
- $ git rev-parse --verify HEAD
- which is done within the script "scripts/setlocalversion".)
- config CC_OPTIMIZE_FOR_SIZE
- bool "Optimize for size"
- default y
- help
- Enabling this option will pass "-Os" instead of "-O2" to gcc
- resulting in a smaller U-Boot image.
- This option is enabled by default for U-Boot.
- config OPTIMIZE_INLINING
- bool "Allow compiler to uninline functions marked 'inline' in full U-Boot"
- default n
- help
- This option determines if U-Boot forces gcc to inline the functions
- developers have marked 'inline'. Doing so takes away freedom from gcc to
- do what it thinks is best, which is desirable in some cases for size
- reasons.
- config SPL_OPTIMIZE_INLINING
- bool "Allow compiler to uninline functions marked 'inline' in SPL"
- depends on SPL
- default n
- help
- This option determines if U-Boot forces gcc to inline the functions
- developers have marked 'inline'. Doing so takes away freedom from gcc to
- do what it thinks is best, which is desirable in some cases for size
- reasons.
- config TPL_OPTIMIZE_INLINING
- bool "Allow compiler to uninline functions marked 'inline' in TPL"
- depends on TPL
- default n
- help
- This option determines if U-Boot forces gcc to inline the functions
- developers have marked 'inline'. Doing so takes away freedom from gcc to
- do what it thinks is best, which is desirable in some cases for size
- reasons.
- config CC_COVERAGE
- bool "Enable code coverage analysis"
- depends on SANDBOX
- help
- Enabling this option will pass "--coverage" to gcc to compile
- and link code instrumented for coverage analysis.
- config CC_HAS_ASM_INLINE
- def_bool $(success,echo 'void foo(void) { asm inline (""); }' | $(CC) -x c - -c -o /dev/null)
- config XEN
- bool "Select U-Boot be run as a bootloader for XEN Virtual Machine"
- help
- Enabling this option will make U-Boot be run as a bootloader
- for XEN [1] Virtual Machine.
- Xen is a virtual machine monitor (VMM) or a type-1 hypervisor with support
- for para-virtualization. Xen can organize the safe execution of several
- virtual machines on the same physical system with performance close to
- native. It is used as the basis for a number of different commercial and
- open source applications, such as: server virtualization, Infrastructure
- as a Service (IaaS), desktop virtualization, security applications,
- embedded and hardware appliances.
- Xen has a special VM called Domain-0 that runs the Dom0 kernel and allows
- Xen to use the device drivers for the Domain-0 kernel by default.
- [1] - https://xenproject.org/
- config DISTRO_DEFAULTS
- bool "Select defaults suitable for booting general purpose Linux distributions"
- select AUTO_COMPLETE
- select CMDLINE_EDITING
- select CMD_BOOTI if ARM64
- select CMD_BOOTZ if ARM && !ARM64
- select CMD_DHCP if CMD_NET
- select CMD_ENV_EXISTS
- select CMD_EXT2
- select CMD_EXT4
- select CMD_FAT
- select CMD_FS_GENERIC
- select CMD_PART if PARTITIONS
- select CMD_PING if CMD_NET
- select CMD_PXE if NET
- select CMD_SYSBOOT
- select ENV_VARS_UBOOT_CONFIG
- select HUSH_PARSER
- select SUPPORT_RAW_INITRD
- select SYS_LONGHELP
- imply CMD_MII if NET
- imply USB_STORAGE
- imply USE_BOOTCOMMAND
- help
- Select this to enable various options and commands which are suitable
- for building u-boot for booting general purpose Linux distributions.
- config ENV_VARS_UBOOT_CONFIG
- bool "Add arch, board, vendor and soc variables to default environment"
- help
- Define this in order to add variables describing the
- U-Boot build configuration to the default environment.
- These will be named arch, cpu, board, vendor, and soc.
- Enabling this option will cause the following to be defined:
- - CONFIG_SYS_ARCH
- - CONFIG_SYS_CPU
- - CONFIG_SYS_BOARD
- - CONFIG_SYS_VENDOR
- - CONFIG_SYS_SOC
- config NR_DRAM_BANKS
- int "Number of DRAM banks"
- default 1 if ARCH_SUNXI || ARCH_OWL
- default 4
- help
- This defines the number of DRAM banks.
- config SYS_BOOT_GET_CMDLINE
- bool "Enable kernel command line setup"
- help
- Enables allocating and saving kernel cmdline in space between
- "bootm_low" and "bootm_low" + BOOTMAPSZ.
- config SYS_BOOT_GET_KBD
- bool "Enable kernel board information setup"
- help
- Enables allocating and saving a kernel copy of the bd_info in
- space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
- config SYS_MALLOC_F
- bool "Enable malloc() pool before relocation"
- default y if DM
- help
- Before relocation, memory is very limited on many platforms. Still,
- we can provide a small malloc() pool if needed. Driver model in
- particular needs this to operate, so that it can allocate the
- initial serial device and any others that are needed.
- config SYS_MALLOC_F_LEN
- hex "Size of malloc() pool before relocation"
- depends on SYS_MALLOC_F
- default 0x1000 if AM33XX
- default 0x2800 if SANDBOX
- default 0x2000 if (ARCH_IMX8 || ARCH_IMX8M || ARCH_MX7 || \
- ARCH_MX7ULP || ARCH_MX6 || ARCH_MX5 || \
- ARCH_LS1012A || ARCH_LS1021A || ARCH_LS1043A || \
- ARCH_LS1046A || ARCH_QEMU)
- default 0x400
- help
- Before relocation, memory is very limited on many platforms. Still,
- we can provide a small malloc() pool if needed. Driver model in
- particular needs this to operate, so that it can allocate the
- initial serial device and any others that are needed.
- config SYS_MALLOC_LEN
- hex "Define memory for Dynamic allocation"
- depends on ARCH_ZYNQ || ARCH_VERSAL || ARCH_STM32MP || ARCH_ROCKCHIP
- default 0x2000000 if ARCH_ROCKCHIP
- help
- This defines memory to be allocated for Dynamic allocation
- TODO: Use for other architectures
- config SPL_SYS_MALLOC_F_LEN
- hex "Size of malloc() pool in SPL before relocation"
- depends on SYS_MALLOC_F && SPL
- default 0x2800 if RCAR_GEN3
- default SYS_MALLOC_F_LEN
- help
- Before relocation, memory is very limited on many platforms. Still,
- we can provide a small malloc() pool if needed. Driver model in
- particular needs this to operate, so that it can allocate the
- initial serial device and any others that are needed.
- config TPL_SYS_MALLOC_F_LEN
- hex "Size of malloc() pool in TPL before relocation"
- depends on SYS_MALLOC_F && TPL
- default SYS_MALLOC_F_LEN
- help
- Before relocation, memory is very limited on many platforms. Still,
- we can provide a small malloc() pool if needed. Driver model in
- particular needs this to operate, so that it can allocate the
- initial serial device and any others that are needed.
- menuconfig EXPERT
- bool "Configure standard U-Boot features (expert users)"
- default y
- help
- This option allows certain base U-Boot options and settings
- to be disabled or tweaked. This is for specialized
- environments which can tolerate a "non-standard" U-Boot.
- Use this only if you really know what you are doing.
- if EXPERT
- config SYS_MALLOC_CLEAR_ON_INIT
- bool "Init with zeros the memory reserved for malloc (slow)"
- default y
- help
- This setting is enabled by default. The reserved malloc
- memory is initialized with zeros, so first malloc calls
- will return the pointer to the zeroed memory. But this
- slows the boot time.
- It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
- value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
- Then the boot time can be significantly reduced.
- Warning:
- When disabling this, please check if malloc calls, maybe
- should be replaced by calloc - if one expects zeroed memory.
- config SYS_MALLOC_DEFAULT_TO_INIT
- bool "Default malloc to init while reserving the memory for it"
- default n
- help
- It may happen that one needs to move the dynamic allocation
- from one to another memory range, eg. when moving the malloc
- from the limited static to a potentially large dynamic (DDR)
- memory.
- If so then on top of setting the updated memory aside one
- needs to bring the malloc init.
- If such a scenario is sought choose yes.
- config TOOLS_DEBUG
- bool "Enable debug information for tools"
- help
- Enable generation of debug information for tools such as mkimage.
- This can be used for debugging purposes. With debug information
- it is possible to set breakpoints on particular lines, single-step
- debug through the source code, etc.
- endif # EXPERT
- config PHYS_64BIT
- bool "64bit physical address support"
- help
- Say Y here to support 64bit physical memory address.
- This can be used not only for 64bit SoCs, but also for
- large physical address extension on 32bit SoCs.
- config HAS_ROM
- bool
- select BINMAN
- help
- Enables building of a u-boot.rom target. This collects U-Boot and
- any necessary binary blobs.
- config ROM_NEEDS_BLOBS
- bool
- depends on HAS_ROM
- help
- Enable this if building the u-boot.rom target needs binary blobs, and
- so cannot be done normally. In this case, U-Boot will only build the
- ROM if the required blobs exist. If not, you will see an warning like:
- Image 'main-section' is missing external blobs and is non-functional:
- intel-descriptor intel-me intel-refcode intel-vga intel-mrc
- config BUILD_ROM
- bool "Build U-Boot as BIOS replacement"
- depends on HAS_ROM
- default y if !ROM_NEEDS_BLOBS
- help
- This option allows to build a ROM version of U-Boot.
- The build process generally requires several binary blobs
- which are not shipped in the U-Boot source tree.
- Please, see doc/arch/x86.rst for details.
- config SPL_IMAGE
- string "SPL image used in the combined SPL+U-Boot image"
- default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
- default "spl/u-boot-spl.bin"
- depends on SPL
- help
- Select the SPL build target that shall be generated by the SPL
- build process (default spl/u-boot-spl.bin). This image will be
- used to generate a combined image with SPL and main U-Boot
- proper as one single image.
- config BUILD_TARGET
- string "Build target special images"
- default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
- default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
- default "u-boot-spl.kwb" if ARCH_MVEBU && SPL
- default "u-boot-elf.srec" if RCAR_GEN3
- default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
- ARCH_SUNXI || RISCV || ARCH_ZYNQMP)
- default "u-boot.kwb" if ARCH_KIRKWOOD
- default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
- default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
- help
- Some SoCs need special image types (e.g. U-Boot binary
- with a special header) as build targets. By defining
- CONFIG_BUILD_TARGET in the SoC / board header, this
- special image will be automatically built upon calling
- make / buildman.
- config SYS_CUSTOM_LDSCRIPT
- bool "Use a custom location for the U-Boot linker script"
- help
- Normally when linking U-Boot we will look in the board directory,
- the CPU directory and finally the "cpu" directory of the architecture
- for the ile "u-boot.lds" and use that as our linker. However, in
- some cases we need to provide a different linker script. To do so,
- enable this option and then provide the location under
- CONFIG_SYS_LDSCRIPT.
- config SYS_LDSCRIPT
- depends on SYS_CUSTOM_LDSCRIPT
- string "Custom ldscript location"
- help
- Path within the source tree to the linker script to use for the
- main U-Boot binary.
- config ERR_PTR_OFFSET
- hex
- default 0x0
- help
- Some U-Boot pointers have redundant information, so we can use a
- scheme where we can return either an error code or a pointer with the
- same return value. The default implementation just casts the pointer
- to a number, however, this may fail on platforms where the end of the
- address range is used for valid pointers (e.g. 0xffffff00 is a valid
- heap pointer in socfpga SPL).
- For such platforms, this value provides an upper range of those error
- pointer values - up to 'MAX_ERRNO' bytes below this value must be
- unused/invalid addresses.
- config PLATFORM_ELFENTRY
- string
- default "__start" if MIPS
- default "_start"
- config STACK_SIZE
- hex "Define max stack size that can be used by U-Boot"
- default 0x4000000 if ARCH_VERSAL || ARCH_ZYNQMP
- default 0x200000 if MICROBLAZE
- default 0x1000000
- help
- Define Max stack size that can be used by U-Boot. This value is used
- by the UEFI sub-system. On some boards initrd_high is calculated as
- base stack pointer minus this stack size.
- config SYS_HAS_SRAM
- bool
- default y if TARGET_PIC32MZDASK
- default y if TARGET_DEVKIT8000
- default y if TARGET_TRICORDER
- default n
- help
- Enable this to allow support for the on board SRAM.
- SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
- SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
- config SYS_SRAM_BASE
- hex
- default 0x80000000 if TARGET_PIC32MZDASK
- default 0x40200000 if TARGET_DEVKIT8000
- default 0x40200000 if TARGET_TRICORDER
- default 0x0
- config SYS_SRAM_SIZE
- hex
- default 0x00080000 if TARGET_PIC32MZDASK
- default 0x10000 if TARGET_DEVKIT8000
- default 0x10000 if TARGET_TRICORDER
- default 0x0
- endmenu # General setup
- menu "Boot images"
- config ANDROID_BOOT_IMAGE
- bool "Enable support for Android Boot Images"
- default y if FASTBOOT
- help
- This enables support for booting images which use the Android
- image format header.
- config FIT
- bool "Support Flattened Image Tree"
- select MD5
- select SHA1
- help
- This option allows you to boot the new uImage structure,
- Flattened Image Tree. FIT is formally a FDT, which can include
- images of various types (kernel, FDT blob, ramdisk, etc.)
- in a single blob. To boot this new uImage structure,
- pass the address of the blob to the "bootm" command.
- FIT is very flexible, supporting compression, multiple images,
- multiple configurations, verification through hashing and also
- verified boot (secure boot using RSA).
- if FIT
- config FIT_EXTERNAL_OFFSET
- hex "FIT external data offset"
- default 0x0
- help
- This specifies a data offset in fit image.
- The offset is from data payload offset to the beginning of
- fit image header. When specifies a offset, specific data
- could be put in the hole between data payload and fit image
- header, such as CSF data on i.MX platform.
- config FIT_ENABLE_SHA256_SUPPORT
- bool "Support SHA256 checksum of FIT image contents"
- default y
- select SHA256
- help
- Enable this to support SHA256 checksum of FIT image contents. A
- SHA256 checksum is a 256-bit (32-byte) hash value used to check that
- the image contents have not been corrupted.
- config FIT_ENABLE_SHA384_SUPPORT
- bool "Support SHA384 checksum of FIT image contents"
- default n
- select SHA384
- help
- Enable this to support SHA384 checksum of FIT image contents. A
- SHA384 checksum is a 384-bit (48-byte) hash value used to check that
- the image contents have not been corrupted. Use this for the highest
- security.
- config FIT_ENABLE_SHA512_SUPPORT
- bool "Support SHA512 checksum of FIT image contents"
- default n
- select SHA512
- help
- Enable this to support SHA512 checksum of FIT image contents. A
- SHA512 checksum is a 512-bit (64-byte) hash value used to check that
- the image contents have not been corrupted.
- config FIT_SIGNATURE
- bool "Enable signature verification of FIT uImages"
- depends on DM
- select HASH
- select RSA
- select RSA_VERIFY
- select IMAGE_SIGN_INFO
- help
- This option enables signature verification of FIT uImages,
- using a hash signed and verified using RSA. If
- CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
- hashing is available using hardware, then the RSA library will use
- it. See doc/uImage.FIT/signature.txt for more details.
- WARNING: When relying on signed FIT images with a required signature
- check the legacy image format is disabled by default, so that
- unsigned images cannot be loaded. If a board needs the legacy image
- format support in this case, enable it using
- CONFIG_LEGACY_IMAGE_FORMAT.
- config FIT_SIGNATURE_MAX_SIZE
- hex "Max size of signed FIT structures"
- depends on FIT_SIGNATURE
- default 0x10000000
- help
- This option sets a max size in bytes for verified FIT uImages.
- A sane value of 256MB protects corrupted DTB structures from overlapping
- device memory. Assure this size does not extend past expected storage
- space.
- config FIT_ENABLE_RSASSA_PSS_SUPPORT
- bool "Support rsassa-pss signature scheme of FIT image contents"
- depends on FIT_SIGNATURE
- default n
- help
- Enable this to support the pss padding algorithm as described
- in the rfc8017 (https://tools.ietf.org/html/rfc8017).
- config FIT_CIPHER
- bool "Enable ciphering data in a FIT uImages"
- depends on DM
- select AES
- help
- Enable the feature of data ciphering/unciphering in the tool mkimage
- and in the u-boot support of the FIT image.
- config FIT_VERBOSE
- bool "Show verbose messages when FIT images fail"
- help
- Generally a system will have valid FIT images so debug messages
- are a waste of code space. If you are debugging your images then
- you can enable this option to get more verbose information about
- failures.
- config FIT_BEST_MATCH
- bool "Select the best match for the kernel device tree"
- help
- When no configuration is explicitly selected, default to the
- one whose fdt's compatibility field best matches that of
- U-Boot itself. A match is considered "best" if it matches the
- most specific compatibility entry of U-Boot's fdt's root node.
- The order of entries in the configuration's fdt is ignored.
- config FIT_IMAGE_POST_PROCESS
- bool "Enable post-processing of FIT artifacts after loading by U-Boot"
- depends on TI_SECURE_DEVICE
- help
- Allows doing any sort of manipulation to blobs after they got extracted
- from FIT images like stripping off headers or modifying the size of the
- blob, verification, authentication, decryption etc. in a platform or
- board specific way. In order to use this feature a platform or board-
- specific implementation of board_fit_image_post_process() must be
- provided. Also, anything done during this post-processing step would
- need to be comprehended in how the images were prepared before being
- injected into the FIT creation (i.e. the blobs would have been pre-
- processed before being added to the FIT image).
- if SPL
- config SPL_FIT
- bool "Support Flattened Image Tree within SPL"
- depends on SPL
- select SPL_OF_LIBFDT
- config SPL_FIT_PRINT
- bool "Support FIT printing within SPL"
- depends on SPL_FIT
- help
- Support printing the content of the fitImage in a verbose manner in SPL.
- config SPL_FIT_SIGNATURE
- bool "Enable signature verification of FIT firmware within SPL"
- depends on SPL_DM
- select SPL_FIT
- select SPL_CRYPTO_SUPPORT
- select SPL_HASH_SUPPORT
- select SPL_RSA
- select SPL_RSA_VERIFY
- select SPL_IMAGE_SIGN_INFO
- config SPL_LOAD_FIT
- bool "Enable SPL loading U-Boot as a FIT (basic fitImage features)"
- select SPL_FIT
- help
- Normally with the SPL framework a legacy image is generated as part
- of the build. This contains U-Boot along with information as to
- where it should be loaded. This option instead enables generation
- of a FIT (Flat Image Tree) which provides more flexibility. In
- particular it can handle selecting from multiple device tree
- and passing the correct one to U-Boot.
- config SPL_LOAD_FIT_ADDRESS
- hex "load address of fit image"
- depends on SPL_LOAD_FIT
- default 0x0
- help
- Specify the load address of the fit image that will be loaded
- by SPL.
- config SPL_LOAD_FIT_APPLY_OVERLAY
- bool "Enable SPL applying DT overlays from FIT"
- depends on SPL_LOAD_FIT
- select OF_LIBFDT_OVERLAY
- help
- The device tree is loaded from the FIT image. Allow the SPL is to
- also load device-tree overlays from the FIT image an apply them
- over the device tree.
- config SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ
- depends on SPL_LOAD_FIT_APPLY_OVERLAY
- default 0x10000
- hex "size of temporary buffer used to load the overlays"
- help
- The size of the area where the overlays will be loaded and
- uncompress. Must be at least as large as biggest overlay
- (uncompressed)
- config SPL_LOAD_FIT_FULL
- bool "Enable SPL loading U-Boot as a FIT (full fitImage features)"
- select SPL_FIT
- help
- Normally with the SPL framework a legacy image is generated as part
- of the build. This contains U-Boot along with information as to
- where it should be loaded. This option instead enables generation
- of a FIT (Flat Image Tree) which provides more flexibility. In
- particular it can handle selecting from multiple device tree
- and passing the correct one to U-Boot.
- config SPL_FIT_IMAGE_POST_PROCESS
- bool "Enable post-processing of FIT artifacts after loading by the SPL"
- depends on SPL_LOAD_FIT
- help
- Allows doing any sort of manipulation to blobs after they got extracted
- from the U-Boot FIT image like stripping off headers or modifying the
- size of the blob, verification, authentication, decryption etc. in a
- platform or board specific way. In order to use this feature a platform
- or board-specific implementation of board_fit_image_post_process() must
- be provided. Also, anything done during this post-processing step would
- need to be comprehended in how the images were prepared before being
- injected into the FIT creation (i.e. the blobs would have been pre-
- processed before being added to the FIT image).
- config SPL_FIT_SOURCE
- string ".its source file for U-Boot FIT image"
- depends on SPL_FIT
- help
- Specifies a (platform specific) FIT source file to generate the
- U-Boot FIT image. This could specify further image to load and/or
- execute.
- config USE_SPL_FIT_GENERATOR
- bool "Use a script to generate the .its script"
- default y if SPL_FIT && !ARCH_SUNXI
- config SPL_FIT_GENERATOR
- string ".its file generator script for U-Boot FIT image"
- depends on USE_SPL_FIT_GENERATOR
- default "arch/arm/mach-rockchip/make_fit_atf.py" if SPL_LOAD_FIT && ARCH_ROCKCHIP
- default "arch/arm/mach-zynqmp/mkimage_fit_atf.sh" if SPL_LOAD_FIT && ARCH_ZYNQMP
- default "arch/riscv/lib/mkimage_fit_opensbi.sh" if SPL_LOAD_FIT && RISCV
- help
- Specifies a (platform specific) script file to generate the FIT
- source file used to build the U-Boot FIT image file. This gets
- passed a list of supported device tree file stub names to
- include in the generated image.
- endif # SPL
- endif # FIT
- config LEGACY_IMAGE_FORMAT
- bool "Enable support for the legacy image format"
- default y if !FIT_SIGNATURE
- help
- This option enables the legacy image format. It is enabled by
- default for backward compatibility, unless FIT_SIGNATURE is
- set where it is disabled so that unsigned images cannot be
- loaded. If a board needs the legacy image format support in this
- case, enable it here.
- config OF_BOARD_SETUP
- bool "Set up board-specific details in device tree before boot"
- depends on OF_LIBFDT
- help
- This causes U-Boot to call ft_board_setup() before booting into
- the Operating System. This function can set up various
- board-specific information in the device tree for use by the OS.
- The device tree is then passed to the OS.
- config OF_SYSTEM_SETUP
- bool "Set up system-specific details in device tree before boot"
- depends on OF_LIBFDT
- help
- This causes U-Boot to call ft_system_setup() before booting into
- the Operating System. This function can set up various
- system-specific information in the device tree for use by the OS.
- The device tree is then passed to the OS.
- config OF_STDOUT_VIA_ALIAS
- bool "Update the device-tree stdout alias from U-Boot"
- depends on OF_LIBFDT
- help
- This uses U-Boot's serial alias from the aliases node to update
- the device tree passed to the OS. The "linux,stdout-path" property
- in the chosen node is set to point to the correct serial node.
- This option currently references CONFIG_CONS_INDEX, which is
- incorrect when used with device tree as this option does not
- exist / should not be used.
- config SYS_EXTRA_OPTIONS
- string "Extra Options (DEPRECATED)"
- help
- The old configuration infrastructure (= mkconfig + boards.cfg)
- provided the extra options field. If you have something like
- "HAS_BAR,BAZ=64", the optional options
- #define CONFIG_HAS
- #define CONFIG_BAZ 64
- will be defined in include/config.h.
- This option was prepared for the smooth migration from the old
- configuration to Kconfig. Since this option will be removed sometime,
- new boards should not use this option.
- config HAVE_SYS_TEXT_BASE
- bool
- depends on !NIOS2 && !XTENSA
- depends on !EFI_APP
- default y
- config SYS_TEXT_BASE
- depends on HAVE_SYS_TEXT_BASE
- default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
- default 0x4a000000 if ARCH_SUNXI && !MACH_SUN9I && !MACH_SUN8I_V3S
- default 0x2a000000 if ARCH_SUNXI && MACH_SUN9I
- default 0x42e00000 if ARCH_SUNXI && MACH_SUN8I_V3S
- hex "Text Base"
- help
- The address in memory that U-Boot will be running from, initially.
- config SYS_CLK_FREQ
- depends on ARC || ARCH_SUNXI || MPC83xx
- int "CPU clock frequency"
- help
- TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
- config ARCH_FIXUP_FDT_MEMORY
- bool "Enable arch_fixup_memory_banks() call"
- default y
- help
- Enable FDT memory map syncup before OS boot. This feature can be
- used for booting OS with different memory setup where the part of
- the memory location should be used for different purpose.
- endmenu # Boot images
- source "api/Kconfig"
- source "common/Kconfig"
- source "cmd/Kconfig"
- source "disk/Kconfig"
- source "dts/Kconfig"
- source "env/Kconfig"
- source "net/Kconfig"
- source "drivers/Kconfig"
- source "fs/Kconfig"
- source "lib/Kconfig"
- source "test/Kconfig"
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