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
17 string "Local version - append to U-Boot release"
19 Append an extra string to the end of your U-Boot version.
20 This will show up on your boot log, for example.
21 The string you set here will be appended after the contents of
22 any files with a filename matching localversion* in your
23 object and source tree, in that order. Your total string can
24 be a maximum of 64 characters.
26 config LOCALVERSION_AUTO
27 bool "Automatically append version information to the version string"
30 This will try to automatically determine if the current tree is a
31 release tree by looking for git tags that belong to the current
34 A string of the format -gxxxxxxxx will be added to the localversion
35 if a git-based tree is found. The string generated by this will be
36 appended after any matching localversion* files, and after the value
37 set in CONFIG_LOCALVERSION.
39 (The actual string used here is the first eight characters produced
40 by running the command:
42 $ git rev-parse --verify HEAD
44 which is done within the script "scripts/setlocalversion".)
46 config CC_OPTIMIZE_FOR_SIZE
47 bool "Optimize for size"
50 Enabling this option will pass "-Os" instead of "-O2" to gcc
51 resulting in a smaller U-Boot image.
53 This option is enabled by default for U-Boot.
56 bool "Enable malloc() pool before relocation"
59 Before relocation memory is very limited on many platforms. Still,
60 we can provide a small malloc() pool if needed. Driver model in
61 particular needs this to operate, so that it can allocate the
62 initial serial device and any others that are needed.
64 config SYS_MALLOC_F_LEN
65 hex "Size of malloc() pool before relocation"
66 depends on SYS_MALLOC_F
69 Before relocation memory is very limited on many platforms. Still,
70 we can provide a small malloc() pool if needed. Driver model in
71 particular needs this to operate, so that it can allocate the
72 initial serial device and any others that are needed.
75 bool "Configure standard U-Boot features (expert users)"
78 This option allows certain base U-Boot options and settings
79 to be disabled or tweaked. This is for specialized
80 environments which can tolerate a "non-standard" U-Boot.
81 Only use this if you really know what you are doing.
84 config SYS_MALLOC_CLEAR_ON_INIT
85 bool "Init with zeros the memory reserved for malloc (slow)"
88 This setting is enabled by default. The reserved malloc
89 memory is initialized with zeros, so first malloc calls
90 will return the pointer to the zeroed memory. But this
93 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
94 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
95 Then the boot time can be significantly reduced.
97 When disabling this, please check if malloc calls, maybe
98 should be replaced by calloc - if expects zeroed memory.
100 endmenu # General setup
112 depends on SUPPORT_SPL
115 If you want to build SPL as well as the normal image, say Y.
117 config SPL_SYS_MALLOC_SIMPLE
120 prompt "Only use malloc_simple functions in the spl"
122 Say Y here to only use the *_simple malloc functions from
123 malloc_simple.c, rather then using the versions from dlmalloc.c
124 this will make the SPL binary smaller at the cost of more heap
125 usage as the *_simple malloc functions do not re-use free-ed mem.
129 bool "Enable SDRAM location for SPL stack"
131 SPL starts off execution in SRAM and thus typically has only a small
132 stack available. Since SPL sets up DRAM while in its board_init_f()
133 function, it is possible for the stack to move there before
134 board_init_r() is reached. This option enables a special SDRAM
135 location for the SPL stack. U-Boot SPL switches to this after
136 board_init_f() completes, and before board_init_r() starts.
138 config SPL_STACK_R_ADDR
139 depends on SPL_STACK_R
140 hex "SDRAM location for SPL stack"
142 Specify the address in SDRAM for the SPL stack. This will be set up
143 before board_init_r() is called.
145 config SPL_STACK_R_MALLOC_SIMPLE_LEN
146 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
147 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
150 Specify the amount of the stack to use as memory pool for
151 malloc_simple after switching the stack to DRAM. This may be set
152 to give board_init_r() a larger heap then the initial heap in
153 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
157 depends on SPL && SUPPORT_TPL
160 If you want to build TPL as well as the normal image and SPL, say Y.
163 bool "Support Flattened Image Tree"
165 This option allows to boot the new uImage structrure,
166 Flattened Image Tree. FIT is formally a FDT, which can include
167 images of various types (kernel, FDT blob, ramdisk, etc.)
168 in a single blob. To boot this new uImage structure,
169 pass the address of the blob to the "bootm" command.
172 bool "Display verbose messages on FIT boot"
176 bool "Enable signature verification of FIT uImages"
181 This option enables signature verification of FIT uImages,
182 using a hash signed and verified using RSA. If
183 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
184 hashing is available using hardware, RSA library will use it.
185 See doc/uImage.FIT/signature.txt for more details.
187 config SYS_EXTRA_OPTIONS
188 string "Extra Options (DEPRECATED)"
190 The old configuration infrastructure (= mkconfig + boards.cfg)
191 provided the extra options field. If you have something like
192 "HAS_BAR,BAZ=64", the optional options
194 #define CONFIG_BAZ 64
195 will be defined in include/config.h.
196 This option was prepared for the smooth migration from the old
197 configuration to Kconfig. Since this option will be removed sometime,
198 new boards should not use this option.
201 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP
205 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
208 depends on ARC || ARCH_SUNXI
209 int "CPU clock frequency"
211 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
213 endmenu # Boot images
215 source "common/Kconfig"
221 source "drivers/Kconfig"
227 source "test/Kconfig"