forked from rrcarlosr/Jetpack
339 lines
11 KiB
Plaintext
339 lines
11 KiB
Plaintext
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#
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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 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 DISTRO_DEFAULTS
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bool "Select defaults suitable for booting general purpose Linux distributions"
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default y if ARCH_SUNXI
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default n
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select CMD_BOOTZ
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select CMD_DHCP
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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_MII
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select CMD_PING
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select HUSH_PARSER
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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 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 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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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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endif
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endmenu # General setup
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menu "Boot images"
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config SUPPORT_SPL
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bool
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config SUPPORT_TPL
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bool
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config SPL
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bool
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depends on SUPPORT_SPL
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prompt "Enable SPL"
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help
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If you want to build SPL as well as the normal image, say Y.
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config SPL_SYS_MALLOC_SIMPLE
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bool
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depends on SPL
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prompt "Only use malloc_simple functions in the SPL"
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help
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Say Y here to only use the *_simple malloc functions from
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malloc_simple.c, rather then using the versions from dlmalloc.c;
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this will make the SPL binary smaller at the cost of more heap
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usage as the *_simple malloc functions do not re-use free-ed mem.
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config SPL_STACK_R
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depends on SPL
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bool "Enable SDRAM location for SPL stack"
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help
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SPL starts off execution in SRAM and thus typically has only a small
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stack available. Since SPL sets up DRAM while in its board_init_f()
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function, it is possible for the stack to move there before
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board_init_r() is reached. This option enables a special SDRAM
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location for the SPL stack. U-Boot SPL switches to this after
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board_init_f() completes, and before board_init_r() starts.
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config SPL_STACK_R_ADDR
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depends on SPL_STACK_R
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hex "SDRAM location for SPL stack"
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help
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Specify the address in SDRAM for the SPL stack. This will be set up
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before board_init_r() is called.
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config SPL_STACK_R_MALLOC_SIMPLE_LEN
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depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
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hex "Size of malloc_simple heap after switching to DRAM SPL stack"
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default 0x100000
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help
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Specify the amount of the stack to use as memory pool for
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malloc_simple after switching the stack to DRAM. This may be set
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to give board_init_r() a larger heap then the initial heap in
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SRAM which is limited to SYS_MALLOC_F_LEN bytes.
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config SPL_SEPARATE_BSS
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depends on SPL
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bool "BSS section is in a different memory region from text"
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help
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Some platforms need a large BSS region in SPL and can provide this
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because RAM is already set up. In this case BSS can be moved to RAM.
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This option should then be enabled so that the correct device tree
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location is used. Normally we put the device tree at the end of BSS
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but with this option enabled, it goes at _image_binary_end.
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config TPL
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bool
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depends on SPL && SUPPORT_TPL
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prompt "Enable TPL"
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help
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If you want to build TPL as well as the normal image and SPL, say Y.
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config FIT
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bool "Support Flattened Image Tree"
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help
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This option allows to boot the new uImage structrure,
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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). This option enables that
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feature.
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config SPL_FIT
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bool "Support Flattened Image Tree within SPL"
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depends on FIT
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depends on SPL
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config FIT_VERBOSE
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bool "Display verbose messages on FIT boot"
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depends on FIT
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config FIT_SIGNATURE
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bool "Enable signature verification of FIT uImages"
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depends on FIT
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depends on DM
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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 then 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_IMAGE_FORMAT_LEGACY.
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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_FIT
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depends on SPL_DM
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select SPL_RSA
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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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depends on FIT
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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_VERBOSE
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bool "Show verbose messages when FIT images fails"
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depends on FIT
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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 OF_BOARD_SETUP
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bool "Set up board-specific details in device tree before boot"
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depends on OF_LIBFDT
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help
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This causes U-Boot to call ft_board_setup() before booting into
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the Operating System. This function can set up various
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board-specific information in the device tree for use by the OS.
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The device tree is then passed to the OS.
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config OF_SYSTEM_SETUP
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bool "Set up system-specific details in device tree before boot"
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depends on OF_LIBFDT
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help
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This causes U-Boot to call ft_system_setup() before booting into
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the Operating System. This function can set up various
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system-specific information in the device tree for use by the OS.
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The device tree is then passed to the OS.
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config OF_STDOUT_VIA_ALIAS
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bool "Update the device-tree stdout alias from U-Boot"
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depends on OF_LIBFDT
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help
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This uses U-Boot's serial alias from the aliases node to update
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the device tree passed to the OS. The "linux,stdout-path" property
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in the chosen node is set to point to the correct serial node.
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This option currently references CONFIG_CONS_INDEX, which is
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incorrect when used with device tree as this option does not
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exist / should not be used.
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config SYS_EXTRA_OPTIONS
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string "Extra Options (DEPRECATED)"
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help
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The old configuration infrastructure (= mkconfig + boards.cfg)
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provided the extra options field. If you have something like
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"HAS_BAR,BAZ=64", the optional options
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#define CONFIG_HAS
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#define CONFIG_BAZ 64
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will be defined in include/config.h.
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This option was prepared for the smooth migration from the old
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configuration to Kconfig. Since this option will be removed sometime,
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new boards should not use this option.
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config SYS_TEXT_BASE
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depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
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(M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
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depends on !EFI_APP
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hex "Text Base"
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help
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TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
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config SPL_LOAD_FIT
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bool "Enable SPL loading U-Boot as a FIT"
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depends on 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 SYS_CLK_FREQ
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depends on ARC || ARCH_SUNXI
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int "CPU clock frequency"
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help
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TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
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endmenu # Boot images
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source "common/Kconfig"
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source "cmd/Kconfig"
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source "dts/Kconfig"
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "fs/Kconfig"
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source "lib/Kconfig"
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source "test/Kconfig"
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