2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
5 mainmenu "U-Boot $UBOOTVERSION Configuration"
9 option env="UBOOTVERSION"
11 # Allow defaults in arch-specific code to override any given here
14 # Allow defaults in arch-specific code to override any given here
20 string "Local version - append to U-Boot release"
22 Append an extra string to the end of your U-Boot version.
23 This will show up on your boot log, for example.
24 The string you set here will be appended after the contents of
25 any files with a filename matching localversion* in your
26 object and source tree, in that order. Your total string can
27 be a maximum of 64 characters.
29 config LOCALVERSION_AUTO
30 bool "Automatically append version information to the version string"
33 This will try to automatically determine if the current tree is a
34 release tree by looking for git tags that belong to the current
37 A string of the format -gxxxxxxxx will be added to the localversion
38 if a git-based tree is found. The string generated by this will be
39 appended after any matching localversion* files, and after the value
40 set in CONFIG_LOCALVERSION.
42 (The actual string used here is the first eight characters produced
43 by running the command:
45 $ git rev-parse --verify HEAD
47 which is done within the script "scripts/setlocalversion".)
49 config CC_OPTIMIZE_FOR_SIZE
50 bool "Optimize for size"
53 Enabling this option will pass "-Os" instead of "-O2" to gcc
54 resulting in a smaller U-Boot image.
56 This option is enabled by default for U-Boot.
59 bool "Enable malloc() pool before relocation"
62 Before relocation memory is very limited on many platforms. Still,
63 we can provide a small malloc() pool if needed. Driver model in
64 particular needs this to operate, so that it can allocate the
65 initial serial device and any others that are needed.
67 config SYS_MALLOC_F_LEN
68 hex "Size of malloc() pool before relocation"
69 depends on SYS_MALLOC_F
72 Before relocation memory is very limited on many platforms. Still,
73 we can provide a small malloc() pool if needed. Driver model in
74 particular needs this to operate, so that it can allocate the
75 initial serial device and any others that are needed.
78 bool "Configure standard U-Boot features (expert users)"
81 This option allows certain base U-Boot options and settings
82 to be disabled or tweaked. This is for specialized
83 environments which can tolerate a "non-standard" U-Boot.
84 Only use this if you really know what you are doing.
87 config SYS_MALLOC_CLEAR_ON_INIT
88 bool "Init with zeros the memory reserved for malloc (slow)"
91 This setting is enabled by default. The reserved malloc
92 memory is initialized with zeros, so first malloc calls
93 will return the pointer to the zeroed memory. But this
96 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
97 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
98 Then the boot time can be significantly reduced.
100 When disabling this, please check if malloc calls, maybe
101 should be replaced by calloc - if expects zeroed memory.
103 endmenu # General setup
115 depends on SUPPORT_SPL
118 If you want to build SPL as well as the normal image, say Y.
122 bool "Enable SDRAM location for SPL stack"
124 SPL starts off execution in SRAM and thus typically has only a small
125 stack available. Since SPL sets up DRAM while in its board_init_f()
126 function, it is possible for the stack to move there before
127 board_init_r() is reached. This option enables a special SDRAM
128 location for the SPL stack. U-Boot SPL switches to this after
129 board_init_f() completes, and before board_init_r() starts.
131 config SPL_STACK_R_ADDR
132 depends on SPL_STACK_R
133 hex "SDRAM location for SPL stack"
135 Specify the address in SDRAM for the SPL stack. This will be set up
136 before board_init_r() is called.
140 depends on SPL && SUPPORT_TPL
143 If you want to build TPL as well as the normal image and SPL, say Y.
146 bool "Support Flattened Image Tree"
148 This option allows to boot the new uImage structrure,
149 Flattened Image Tree. FIT is formally a FDT, which can include
150 images of various types (kernel, FDT blob, ramdisk, etc.)
151 in a single blob. To boot this new uImage structure,
152 pass the the address of the blob to the "bootm" command.
155 bool "Display verbose messages on FIT boot"
159 bool "Enable signature verification of FIT uImages"
164 This option enables signature verification of FIT uImages,
165 using a hash signed and verified using RSA. If
166 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
167 hashing is available using hardware, RSA library will use it.
168 See doc/uImage.FIT/signature.txt for more details.
170 config SYS_EXTRA_OPTIONS
171 string "Extra Options (DEPRECATED)"
173 The old configuration infrastructure (= mkconfig + boards.cfg)
174 provided the extra options field. If you have something like
175 "HAS_BAR,BAZ=64", the optional options
177 #define CONFIG_BAZ 64
178 will be defined in include/config.h.
179 This option was prepared for the smooth migration from the old
180 configuration to Kconfig. Since this option will be removed sometime,
181 new boards should not use this option.
184 depends on SPARC || ARC
187 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
190 depends on ARC || ARCH_SUNXI
191 int "CPU clock frequency"
193 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
195 endmenu # Boot images
197 source "common/Kconfig"
199 source "disk/Kconfig"
205 source "drivers/Kconfig"
211 source "test/Kconfig"