1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5mainmenu "U-Boot $UBOOTVERSION Configuration" 6 7config UBOOTVERSION 8 string 9 option env="UBOOTVERSION" 10 11# Allow defaults in arch-specific code to override any given here 12source "arch/Kconfig" 13 14menu "General setup" 15 16config LOCALVERSION 17 string "Local version - append to U-Boot release" 18 help 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. 25 26config LOCALVERSION_AUTO 27 bool "Automatically append version information to the version string" 28 default y 29 help 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 32 top of tree revision. 33 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. 38 39 (The actual string used here is the first eight characters produced 40 by running the command: 41 42 $ git rev-parse --verify HEAD 43 44 which is done within the script "scripts/setlocalversion".) 45 46config CC_OPTIMIZE_FOR_SIZE 47 bool "Optimize for size" 48 default y 49 help 50 Enabling this option will pass "-Os" instead of "-O2" to gcc 51 resulting in a smaller U-Boot image. 52 53 This option is enabled by default for U-Boot. 54 55config SYS_MALLOC_F 56 bool "Enable malloc() pool before relocation" 57 default 0x400 58 help 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. 63 64config SYS_MALLOC_F_LEN 65 hex "Size of malloc() pool before relocation" 66 depends on SYS_MALLOC_F 67 default 0x400 68 help 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. 73 74menuconfig EXPERT 75 bool "Configure standard U-Boot features (expert users)" 76 help 77 This option allows certain base U-Boot options and settings 78 to be disabled or tweaked. This is for specialized 79 environments which can tolerate a "non-standard" U-Boot. 80 Only use this if you really know what you are doing. 81 82endmenu # General setup 83 84menu "Boot images" 85 86config SUPPORT_SPL 87 bool 88 89config SUPPORT_TPL 90 bool 91 92config SPL 93 bool 94 depends on SUPPORT_SPL 95 prompt "Enable SPL" 96 help 97 If you want to build SPL as well as the normal image, say Y. 98 99config SPL_STACK_R 100 depends on SPL 101 bool "Enable SDRAM location for SPL stack" 102 help 103 SPL starts off execution in SRAM and thus typically has only a small 104 stack available. Since SPL sets up DRAM while in its board_init_f() 105 function, it is possible for the stack to move there before 106 board_init_r() is reached. This option enables a special SDRAM 107 location for the SPL stack. U-Boot SPL switches to this after 108 board_init_f() completes, and before board_init_r() starts. 109 110config SPL_STACK_R_ADDR 111 depends on SPL_STACK_R 112 hex "SDRAM location for SPL stack" 113 help 114 Specify the address in SDRAM for the SPL stack. This will be set up 115 before board_init_r() is called. 116 117config TPL 118 bool 119 depends on SPL && SUPPORT_TPL 120 prompt "Enable TPL" 121 help 122 If you want to build TPL as well as the normal image and SPL, say Y. 123 124config FIT 125 bool "Support Flattened Image Tree" 126 help 127 This option allows to boot the new uImage structrure, 128 Flattened Image Tree. FIT is formally a FDT, which can include 129 images of various types (kernel, FDT blob, ramdisk, etc.) 130 in a single blob. To boot this new uImage structure, 131 pass the the address of the blob to the "bootm" command. 132 133config FIT_VERBOSE 134 bool "Display verbose messages on FIT boot" 135 depends on FIT 136 137config FIT_SIGNATURE 138 bool "Enable signature verification of FIT uImages" 139 depends on FIT 140 depends on DM 141 select RSA 142 help 143 This option enables signature verification of FIT uImages, 144 using a hash signed and verified using RSA. If 145 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive 146 hashing is available using hardware, RSA library will use it. 147 See doc/uImage.FIT/signature.txt for more details. 148 149config SYS_EXTRA_OPTIONS 150 string "Extra Options (DEPRECATED)" 151 help 152 The old configuration infrastructure (= mkconfig + boards.cfg) 153 provided the extra options field. If you have something like 154 "HAS_BAR,BAZ=64", the optional options 155 #define CONFIG_HAS 156 #define CONFIG_BAZ 64 157 will be defined in include/config.h. 158 This option was prepared for the smooth migration from the old 159 configuration to Kconfig. Since this option will be removed sometime, 160 new boards should not use this option. 161 162config SYS_TEXT_BASE 163 depends on SPARC || ARC 164 hex "Text Base" 165 help 166 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture 167 168config SYS_CLK_FREQ 169 depends on ARC 170 int "CPU clock frequency" 171 help 172 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture 173 174endmenu # Boot images 175 176source "common/Kconfig" 177 178source "dts/Kconfig" 179 180source "net/Kconfig" 181 182source "drivers/Kconfig" 183 184source "fs/Kconfig" 185 186source "lib/Kconfig" 187 188source "test/Kconfig" 189