which is done within the script "scripts/setlocalversion".)
+config CC_IS_GCC
+ def_bool $(success,$(CC) --version | head -n 1 | grep -q gcc)
+
+config GCC_VERSION
+ int
+ default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
+ default 0
+
+config CC_IS_CLANG
+ def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
+
+config CLANG_VERSION
+ int
+ default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
+
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size"
default y
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
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 ARCH_SUPPORTS_LTO
+ bool
+
+config LTO
+ bool "Enable Link Time Optimizations"
+ depends on ARCH_SUPPORTS_LTO
+ help
+ This option enables Link Time Optimization (LTO), a mechanism which
+ allows the compiler to optimize between different compilation units.
+
+ This can optimize away dead code paths, resulting in smaller binary
+ size (if CC_OPTIMIZE_FOR_SIZE is enabled).
+
+ This option is not available for every architecture and may
+ introduce bugs.
+
+ Currently, when compiling with GCC, due to a weird bug regarding
+ jobserver, the final linking will not respect make's --jobs argument.
+ Instead all available processors will be used (as reported by the
+ nproc command).
+
+ If unsure, say n.
+
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
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
hex "Size of malloc() pool before relocation"
depends on SYS_MALLOC_F
default 0x1000 if AM33XX
- default 0x2800 if SANDBOX
+ default 0x4000 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)
+ ARCH_LS1046A || ARCH_QEMU || ARCH_SUNXI || ARCH_OWL)
default 0x400
help
Before relocation, memory is very limited on many platforms. Still,
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
+ default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
+ default 0x200000 if ARCH_BMIPS || X86
+ default 0x120000 if MACH_SUNIV
+ default 0x220000 if MACH_SUN8I_V3S
+ default 0x4020000 if ARCH_SUNXI
+ default 0x400000
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"
+ hex "Size of malloc() pool in SPL"
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,
+ In SPL 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.
+ It is possible to enable CONFIG_SYS_SPL_MALLOC_START to start a new
+ malloc() region in SDRAM once it is inited.
+
config TPL_SYS_MALLOC_F_LEN
- hex "Size of malloc() pool in TPL before relocation"
+ hex "Size of malloc() pool in TPL"
depends on SYS_MALLOC_F && TPL
- default SYS_MALLOC_F_LEN
+ default SPL_SYS_MALLOC_F_LEN
help
- Before relocation, memory is very limited on many platforms. Still,
+ In TPL 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_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
This can be used not only for 64bit SoCs, but also for
large physical address extension on 32bit SoCs.
-config BUILD_ROM
- bool "Build U-Boot as BIOS replacement"
- depends on X86
+config HAS_ROM
+ bool
+ select BINMAN
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.
+ Enables building of a u-boot.rom target. This collects U-Boot and
+ any necessary binary blobs.
config SPL_IMAGE
string "SPL image used in the combined SPL+U-Boot image"
used to generate a combined image with SPL and main U-Boot
proper as one single image.
+config REMAKE_ELF
+ bool "Recreate an ELF image from raw U-Boot binary"
+ help
+ Enable this to recreate an ELF image (u-boot.elf) from the raw
+ U-Boot binary (u-boot.bin), which may already have been statically
+ relocated and may already have a device-tree appended to it.
+
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 SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
+ 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
Path within the source tree to the linker script to use for the
main U-Boot binary.
+config SYS_LOAD_ADDR
+ hex "Address in memory to use by default"
+ default 0x01000000 if ARCH_SOCFPGA
+ default 0x02000000 if PPC || X86
+ default 0x81000000 if MACH_SUNIV
+ default 0x22000000 if MACH_SUN9I
+ default 0x42000000 if ARCH_SUNXI
+ default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
+ default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
+ default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
+ default 0x80800000 if ARCH_MX7
+ default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
+ help
+ Address in memory to use as the default safe load address.
+
config ERR_PTR_OFFSET
hex
default 0x0
default "__start" if MIPS
default "_start"
-endmenu # General setup
-
-menu "Boot images"
-
-config ANDROID_BOOT_IMAGE
- bool "Enable support for Android Boot Images"
- default y if FASTBOOT
+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
- This enables support for booting images which use the Android
- image format header.
+ 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 FIT
- bool "Support Flattened Image Tree"
- select MD5
- select SHA1
+config SYS_HAS_SRAM
+ bool
+ default y if TARGET_PIC32MZDASK
+ default y if TARGET_DEVKIT8000
+ default y if TARGET_TRICORDER
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).
+ 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.
-if FIT
-
-config FIT_EXTERNAL_OFFSET
- hex "FIT external data offset"
+config SYS_SRAM_BASE
+ hex
+ default 0x80000000 if TARGET_PIC32MZDASK
+ default 0x40200000 if TARGET_DEVKIT8000
+ default 0x40200000 if TARGET_TRICORDER
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
+config SYS_SRAM_SIZE
+ hex
+ default 0x00080000 if TARGET_PIC32MZDASK
+ default 0x10000 if TARGET_DEVKIT8000
+ default 0x10000 if TARGET_TRICORDER
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 SPL_FIT_GENERATOR
- string ".its file generator script for U-Boot FIT image"
- depends on SPL_FIT
- default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
- 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"
+config MP
+ bool "Support for multiprocessor"
help
- TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
+ This provides an option to bringup different processors
+ in multiprocessor cases.
-config ARCH_FIXUP_FDT_MEMORY
- bool "Enable arch_fixup_memory_banks() call"
- default y
+config EXAMPLES
+ bool "Compile API examples"
+ depends on !SANDBOX
+ default y if ARCH_QEMU
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.
+ U-Boot provides an API for standalone applications. Examples are
+ provided in directory examples/.
-endmenu # Boot images
+endmenu # General setup
source "api/Kconfig"
+source "boot/Kconfig"
+
source "common/Kconfig"
source "cmd/Kconfig"
source "lib/Kconfig"
source "test/Kconfig"
+
+source "tools/Kconfig"
projects / platform / kernel / u-boot.git / blobdiff