598 lines
20 KiB
Plaintext
598 lines
20 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file Documentation/kbuild/kconfig-language.txt in the
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# Linux kernel source tree.
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#
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mainmenu "U-Boot $UBOOTVERSION Configuration"
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config UBOOTVERSION
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string
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option env="UBOOTVERSION"
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# Allow defaults in arch-specific code to override any given here
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source "arch/Kconfig"
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menu "General setup"
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config BROKEN
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bool
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help
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This option cannot be enabled. It is used as dependency
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for broken and incomplete features.
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config DEPRECATED
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bool
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help
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This option cannot be enabled. It it used as a dependency for
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code that relies on deprecated features that will be removed and
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the conversion deadline has passed.
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config LOCALVERSION
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string "Local version - append to U-Boot release"
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help
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Append an extra string to the end of your U-Boot version.
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This will show up in your boot log, for example.
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The string you set here will be appended after the contents of
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any files with a filename matching localversion* in your
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object and source tree, in that order. Your total string can
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be a maximum of 64 characters.
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config LOCALVERSION_AUTO
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bool "Automatically append version information to the version string"
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default y
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help
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This will try to automatically determine if the current tree is a
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release tree by looking for Git tags that belong to the current
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top of tree revision.
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A string of the format -gxxxxxxxx will be added to the localversion
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if a Git-based tree is found. The string generated by this will be
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appended after any matching localversion* files, and after the value
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set in CONFIG_LOCALVERSION.
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(The actual string used here is the first eight characters produced
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by running the command:
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$ git rev-parse --verify HEAD
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which is done within the script "scripts/setlocalversion".)
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config CC_OPTIMIZE_FOR_SIZE
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bool "Optimize for size"
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default y
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help
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Enabling this option will pass "-Os" instead of "-O2" to gcc
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resulting in a smaller U-Boot image.
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This option is enabled by default for U-Boot.
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config CC_COVERAGE
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bool "Enable code coverage analysis"
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depends on SANDBOX
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help
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Enabling this option will pass "--coverage" to gcc to compile
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and link code instrumented for coverage analysis.
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config DISTRO_DEFAULTS
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bool "Select defaults suitable for booting general purpose Linux distributions"
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select AUTO_COMPLETE
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select CMDLINE_EDITING
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select CMD_BOOTI if ARM64
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select CMD_BOOTZ if ARM && !ARM64
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select CMD_DHCP if CMD_NET
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select CMD_ENV_EXISTS
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select CMD_EXT2
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select CMD_EXT4
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select CMD_FAT
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select CMD_FS_GENERIC
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select CMD_PART if PARTITIONS
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select CMD_PING if CMD_NET
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select CMD_PXE if NET
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select CMD_SYSBOOT
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select ENV_VARS_UBOOT_CONFIG
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select HUSH_PARSER
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select SUPPORT_RAW_INITRD
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select SYS_LONGHELP
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imply CMD_MII if NET
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imply USB_STORAGE
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imply USE_BOOTCOMMAND
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help
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Select this to enable various options and commands which are suitable
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for building u-boot for booting general purpose Linux distributions.
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config ENV_VARS_UBOOT_CONFIG
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bool "Add arch, board, vendor and soc variables to default environment"
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help
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Define this in order to add variables describing the
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U-Boot build configuration to the default environment.
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These will be named arch, cpu, board, vendor, and soc.
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Enabling this option will cause the following to be defined:
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- CONFIG_SYS_ARCH
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- CONFIG_SYS_CPU
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- CONFIG_SYS_BOARD
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- CONFIG_SYS_VENDOR
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- CONFIG_SYS_SOC
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config NR_DRAM_BANKS
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int "Number of DRAM banks"
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default 4
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help
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This defines the number of DRAM banks.
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config SYS_BOOT_GET_CMDLINE
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bool "Enable kernel command line setup"
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help
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Enables allocating and saving kernel cmdline in space between
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"bootm_low" and "bootm_low" + BOOTMAPSZ.
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config SYS_BOOT_GET_KBD
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bool "Enable kernel board information setup"
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help
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Enables allocating and saving a kernel copy of the bd_info in
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space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
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config SYS_MALLOC_F
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bool "Enable malloc() pool before relocation"
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default y if DM
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help
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Before relocation, memory is very limited on many platforms. Still,
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we can provide a small malloc() pool if needed. Driver model in
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particular needs this to operate, so that it can allocate the
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initial serial device and any others that are needed.
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config SYS_MALLOC_F_LEN
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hex "Size of malloc() pool before relocation"
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depends on SYS_MALLOC_F
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default 0x1000 if AM33XX
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default 0x2800 if SANDBOX
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default 0x2000 if (ARCH_IMX8 || ARCH_IMX8M || ARCH_MX7 || \
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ARCH_MX7ULP || ARCH_MX6 || ARCH_MX5)
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default 0x400
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help
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Before relocation, memory is very limited on many platforms. Still,
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we can provide a small malloc() pool if needed. Driver model in
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particular needs this to operate, so that it can allocate the
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initial serial device and any others that are needed.
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config SYS_MALLOC_LEN
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hex "Define memory for Dynamic allocation"
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depends on ARCH_ZYNQ || ARCH_VERSAL || ARCH_STM32MP || ARCH_ROCKCHIP
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default 0x2000000 if ARCH_ROCKCHIP
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help
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This defines memory to be allocated for Dynamic allocation
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TODO: Use for other architectures
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config SPL_SYS_MALLOC_F_LEN
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hex "Size of malloc() pool in SPL before relocation"
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depends on SYS_MALLOC_F && SPL
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default 0x2800 if RCAR_GEN3
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default SYS_MALLOC_F_LEN
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help
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Before relocation, memory is very limited on many platforms. Still,
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we can provide a small malloc() pool if needed. Driver model in
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particular needs this to operate, so that it can allocate the
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initial serial device and any others that are needed.
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config TPL_SYS_MALLOC_F_LEN
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hex "Size of malloc() pool in TPL before relocation"
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depends on SYS_MALLOC_F && TPL
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default SYS_MALLOC_F_LEN
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help
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Before relocation, memory is very limited on many platforms. Still,
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we can provide a small malloc() pool if needed. Driver model in
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particular needs this to operate, so that it can allocate the
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initial serial device and any others that are needed.
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menuconfig EXPERT
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bool "Configure standard U-Boot features (expert users)"
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default y
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help
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This option allows certain base U-Boot options and settings
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to be disabled or tweaked. This is for specialized
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environments which can tolerate a "non-standard" U-Boot.
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Use this only if you really know what you are doing.
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if EXPERT
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config SYS_MALLOC_CLEAR_ON_INIT
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bool "Init with zeros the memory reserved for malloc (slow)"
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default y
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help
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This setting is enabled by default. The reserved malloc
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memory is initialized with zeros, so first malloc calls
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will return the pointer to the zeroed memory. But this
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slows the boot time.
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It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
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value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
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Then the boot time can be significantly reduced.
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Warning:
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When disabling this, please check if malloc calls, maybe
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should be replaced by calloc - if one expects zeroed memory.
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config TOOLS_DEBUG
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bool "Enable debug information for tools"
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help
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Enable generation of debug information for tools such as mkimage.
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This can be used for debugging purposes. With debug information
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it is possible to set breakpoints on particular lines, single-step
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debug through the source code, etc.
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endif # EXPERT
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config PHYS_64BIT
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bool "64bit physical address support"
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help
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Say Y here to support 64bit physical memory address.
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This can be used not only for 64bit SoCs, but also for
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large physical address extension on 32bit SoCs.
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config BUILD_ROM
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bool "Build U-Boot as BIOS replacement"
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depends on X86
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help
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This option allows to build a ROM version of U-Boot.
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The build process generally requires several binary blobs
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which are not shipped in the U-Boot source tree.
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Please, see doc/README.x86 for details.
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config SPL_IMAGE
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string "SPL image used in the combined SPL+U-Boot image"
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default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
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default "spl/u-boot-spl.bin"
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depends on SPL
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help
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Select the SPL build target that shall be generated by the SPL
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build process (default spl/u-boot-spl.bin). This image will be
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used to generate a combined image with SPL and main U-Boot
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proper as one single image.
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config BUILD_TARGET
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string "Build target special images"
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default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
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default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
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default "u-boot-spl.kwb" if ARCH_MVEBU && SPL
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default "u-boot-elf.srec" if RCAR_GEN3
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default "u-boot.itb" if SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
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ARCH_SUNXI || RISCV)
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default "u-boot.kwb" if KIRKWOOD
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default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
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default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
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help
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Some SoCs need special image types (e.g. U-Boot binary
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with a special header) as build targets. By defining
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CONFIG_BUILD_TARGET in the SoC / board header, this
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special image will be automatically built upon calling
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make / buildman.
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config SYS_CUSTOM_LDSCRIPT
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bool "Use a custom location for the U-Boot linker script"
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help
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Normally when linking U-Boot we will look in the board directory,
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the CPU directory and finally the "cpu" directory of the architecture
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for the ile "u-boot.lds" and use that as our linker. However, in
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some cases we need to provide a different linker script. To do so,
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enable this option and then provide the location under
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CONFIG_SYS_LDSCRIPT.
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config SYS_LDSCRIPT
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depends on SYS_CUSTOM_LDSCRIPT
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string "Custom ldscript location"
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help
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Path within the source tree to the linker script to use for the
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main U-Boot binary.
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config ERR_PTR_OFFSET
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hex
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default 0x0
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help
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Some U-Boot pointers have redundant information, so we can use a
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scheme where we can return either an error code or a pointer with the
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same return value. The default implementation just casts the pointer
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to a number, however, this may fail on platforms where the end of the
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address range is used for valid pointers (e.g. 0xffffff00 is a valid
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heap pointer in socfpga SPL).
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For such platforms, this value provides an upper range of those error
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pointer values - up to 'MAX_ERRNO' bytes below this value must be
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unused/invalid addresses.
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endmenu # General setup
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menu "Boot images"
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config ANDROID_BOOT_IMAGE
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bool "Enable support for Android Boot Images"
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default y if FASTBOOT
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help
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This enables support for booting images which use the Android
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image format header.
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config FIT
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bool "Support Flattened Image Tree"
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select MD5
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select SHA1
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help
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This option allows you to boot the new uImage structure,
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Flattened Image Tree. FIT is formally a FDT, which can include
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images of various types (kernel, FDT blob, ramdisk, etc.)
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in a single blob. To boot this new uImage structure,
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pass the address of the blob to the "bootm" command.
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FIT is very flexible, supporting compression, multiple images,
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multiple configurations, verification through hashing and also
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verified boot (secure boot using RSA).
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if FIT
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config FIT_EXTERNAL_OFFSET
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hex "FIT external data offset"
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default 0x0
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help
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This specifies a data offset in fit image.
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The offset is from data payload offset to the beginning of
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fit image header. When specifies a offset, specific data
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could be put in the hole between data payload and fit image
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header, such as CSF data on i.MX platform.
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config FIT_ENABLE_SHA256_SUPPORT
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bool "Support SHA256 checksum of FIT image contents"
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default y
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select SHA256
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help
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Enable this to support SHA256 checksum of FIT image contents. A
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SHA256 checksum is a 256-bit (32-byte) hash value used to check that
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the image contents have not been corrupted. SHA256 is recommended
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for use in secure applications since (as at 2016) there is no known
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feasible attack that could produce a 'collision' with differing
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input data. Use this for the highest security. Note that only the
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SHA256 variant is supported: SHA512 and others are not currently
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supported in U-Boot.
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config FIT_SIGNATURE
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bool "Enable signature verification of FIT uImages"
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depends on DM
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select HASH
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select RSA
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help
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This option enables signature verification of FIT uImages,
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using a hash signed and verified using RSA. If
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CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
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hashing is available using hardware, then the RSA library will use
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it. See doc/uImage.FIT/signature.txt for more details.
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WARNING: When relying on signed FIT images with a required signature
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check the legacy image format is disabled by default, so that
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unsigned images cannot be loaded. If a board needs the legacy image
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format support in this case, enable it using
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CONFIG_LEGACY_IMAGE_FORMAT.
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config FIT_SIGNATURE_MAX_SIZE
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hex "Max size of signed FIT structures"
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depends on FIT_SIGNATURE
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default 0x10000000
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help
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This option sets a max size in bytes for verified FIT uImages.
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A sane value of 256MB protects corrupted DTB structures from overlapping
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device memory. Assure this size does not extend past expected storage
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space.
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config FIT_ENABLE_RSASSA_PSS_SUPPORT
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bool "Support rsassa-pss signature scheme of FIT image contents"
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depends on FIT_SIGNATURE
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default n
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help
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Enable this to support the pss padding algorithm as described
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in the rfc8017 (https://tools.ietf.org/html/rfc8017).
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config FIT_VERBOSE
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bool "Show verbose messages when FIT images fail"
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help
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Generally a system will have valid FIT images so debug messages
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are a waste of code space. If you are debugging your images then
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you can enable this option to get more verbose information about
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failures.
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config FIT_BEST_MATCH
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bool "Select the best match for the kernel device tree"
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help
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When no configuration is explicitly selected, default to the
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one whose fdt's compatibility field best matches that of
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U-Boot itself. A match is considered "best" if it matches the
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most specific compatibility entry of U-Boot's fdt's root node.
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The order of entries in the configuration's fdt is ignored.
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config FIT_IMAGE_POST_PROCESS
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bool "Enable post-processing of FIT artifacts after loading by U-Boot"
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depends on TI_SECURE_DEVICE
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help
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Allows doing any sort of manipulation to blobs after they got extracted
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from FIT images like stripping off headers or modifying the size of the
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blob, verification, authentication, decryption etc. in a platform or
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board specific way. In order to use this feature a platform or board-
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specific implementation of board_fit_image_post_process() must be
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provided. Also, anything done during this post-processing step would
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need to be comprehended in how the images were prepared before being
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injected into the FIT creation (i.e. the blobs would have been pre-
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processed before being added to the FIT image).
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if SPL
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config SPL_FIT
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bool "Support Flattened Image Tree within SPL"
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depends on SPL
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select SPL_OF_LIBFDT
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config SPL_FIT_PRINT
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bool "Support FIT printing within SPL"
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depends on SPL_FIT
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help
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Support printing the content of the fitImage in a verbose manner in SPL.
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config SPL_FIT_SIGNATURE
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bool "Enable signature verification of FIT firmware within SPL"
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depends on SPL_DM
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select SPL_FIT
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select SPL_RSA
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config SPL_LOAD_FIT
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bool "Enable SPL loading U-Boot as a FIT (basic fitImage features)"
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select SPL_FIT
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help
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Normally with the SPL framework a legacy image is generated as part
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of the build. This contains U-Boot along with information as to
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where it should be loaded. This option instead enables generation
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of a FIT (Flat Image Tree) which provides more flexibility. In
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particular it can handle selecting from multiple device tree
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and passing the correct one to U-Boot.
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config SPL_LOAD_FIT_FULL
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bool "Enable SPL loading U-Boot as a FIT (full fitImage features)"
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select SPL_FIT
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help
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Normally with the SPL framework a legacy image is generated as part
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of the build. This contains U-Boot along with information as to
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where it should be loaded. This option instead enables generation
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of a FIT (Flat Image Tree) which provides more flexibility. In
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particular it can handle selecting from multiple device tree
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and passing the correct one to U-Boot.
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config SPL_FIT_IMAGE_POST_PROCESS
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bool "Enable post-processing of FIT artifacts after loading by the SPL"
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depends on SPL_LOAD_FIT
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help
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Allows doing any sort of manipulation to blobs after they got extracted
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from the U-Boot FIT image like stripping off headers or modifying the
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size of the blob, verification, authentication, decryption etc. in a
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platform or board specific way. In order to use this feature a platform
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or board-specific implementation of board_fit_image_post_process() must
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be provided. Also, anything done during this post-processing step would
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need to be comprehended in how the images were prepared before being
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injected into the FIT creation (i.e. the blobs would have been pre-
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processed before being added to the FIT image).
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config SPL_FIT_SOURCE
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string ".its source file for U-Boot FIT image"
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depends on SPL_FIT
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help
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Specifies a (platform specific) FIT source file to generate the
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U-Boot FIT image. This could specify further image to load and/or
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execute.
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config SPL_FIT_GENERATOR
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string ".its file generator script for U-Boot FIT image"
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depends on SPL_FIT
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default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
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default "arch/arm/mach-rockchip/make_fit_atf.py" if SPL_LOAD_FIT && ARCH_ROCKCHIP
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default "arch/riscv/lib/mkimage_fit_opensbi.sh" if SPL_LOAD_FIT && RISCV
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help
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Specifies a (platform specific) script file to generate the FIT
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source file used to build the U-Boot FIT image file. This gets
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passed a list of supported device tree file stub names to
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include in the generated image.
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endif # SPL
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endif # FIT
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config LEGACY_IMAGE_FORMAT
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bool "Enable support for the legacy image format"
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default y if !FIT_SIGNATURE
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help
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This option enables the legacy image format. It is enabled by
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default for backward compatibility, unless FIT_SIGNATURE is
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set where it is disabled so that unsigned images cannot be
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|
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 SYS_TEXT_BASE
|
|
depends on !NIOS2 && !XTENSA
|
|
depends on !EFI_APP
|
|
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"
|