blob: ab46b27999c723580ce9e644041df1eb39902a4a [file] [log] [blame]
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
Hiago De Franco9f824412024-08-19 13:24:49 -03003# see the file Documentation/kbuild/kconfig-language.rst in the
Robert P. J. Day2f845be2016-04-16 05:53:07 -04004# Linux kernel source tree.
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09005#
Tom Rini40f11702020-03-11 18:11:17 -04006mainmenu "U-Boot $(UBOOTVERSION) Configuration"
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09007
Tom Rini99985942020-05-18 14:48:00 -04008comment "Compiler: $(CC_VERSION_TEXT)"
9
Tom Rini8f1be322020-05-14 08:30:01 -040010source "scripts/Kconfig.include"
11
Simon Glass157c3952015-02-24 22:26:19 +090012# Allow defaults in arch-specific code to override any given here
13source "arch/Kconfig"
14
Masahiro Yamada804bc5e2014-07-30 14:08:15 +090015menu "General setup"
16
Heinrich Schuchardt556f86d2017-10-19 23:49:19 +020017config BROKEN
18 bool
19 help
20 This option cannot be enabled. It is used as dependency
21 for broken and incomplete features.
22
Tom Rinie9518cf2019-05-29 17:01:29 -040023config DEPRECATED
24 bool
25 help
26 This option cannot be enabled. It it used as a dependency for
27 code that relies on deprecated features that will be removed and
28 the conversion deadline has passed.
29
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090030config LOCALVERSION
31 string "Local version - append to U-Boot release"
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090032 help
33 Append an extra string to the end of your U-Boot version.
Robert P. J. Day2f845be2016-04-16 05:53:07 -040034 This will show up in your boot log, for example.
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090035 The string you set here will be appended after the contents of
36 any files with a filename matching localversion* in your
37 object and source tree, in that order. Your total string can
38 be a maximum of 64 characters.
39
40config LOCALVERSION_AUTO
41 bool "Automatically append version information to the version string"
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090042 default y
43 help
44 This will try to automatically determine if the current tree is a
Robert P. J. Day2f845be2016-04-16 05:53:07 -040045 release tree by looking for Git tags that belong to the current
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090046 top of tree revision.
47
48 A string of the format -gxxxxxxxx will be added to the localversion
Robert P. J. Day2f845be2016-04-16 05:53:07 -040049 if a Git-based tree is found. The string generated by this will be
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090050 appended after any matching localversion* files, and after the value
51 set in CONFIG_LOCALVERSION.
52
53 (The actual string used here is the first eight characters produced
54 by running the command:
55
56 $ git rev-parse --verify HEAD
57
58 which is done within the script "scripts/setlocalversion".)
59
Tom Rini50800632021-06-17 18:07:25 -040060config CC_IS_GCC
61 def_bool $(success,$(CC) --version | head -n 1 | grep -q gcc)
62
63config GCC_VERSION
64 int
65 default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
66 default 0
67
68config CC_IS_CLANG
69 def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
70
71config CLANG_VERSION
72 int
73 default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
74
Sean Anderson9964cae2022-02-22 12:19:24 -050075choice
76 prompt "Optimization level"
77 default CC_OPTIMIZE_FOR_SIZE
78
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090079config CC_OPTIMIZE_FOR_SIZE
80 bool "Optimize for size"
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090081 help
Sean Anderson9964cae2022-02-22 12:19:24 -050082 Enabling this option will pass "-Os" to gcc, resulting in a smaller
83 U-Boot image.
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090084
85 This option is enabled by default for U-Boot.
86
Sean Anderson9964cae2022-02-22 12:19:24 -050087config CC_OPTIMIZE_FOR_SPEED
88 bool "Optimize for speed"
89 help
90 Enabling this option will pass "-O2" to gcc, resulting in a faster
91 U-Boot image.
92
Sean Andersonc73952c2022-02-22 12:19:25 -050093config CC_OPTIMIZE_FOR_DEBUG
94 bool "Optimize for debugging"
95 help
96 Enabling this option will pass "-Og" to gcc, enabling optimizations
97 which don't interfere with debugging.
98
Sean Anderson9964cae2022-02-22 12:19:24 -050099endchoice
100
Tom Rini5cbb29e2020-05-14 08:30:07 -0400101config OPTIMIZE_INLINING
Tom Riniea55ba02020-05-14 08:30:08 -0400102 bool "Allow compiler to uninline functions marked 'inline' in full U-Boot"
Tom Riniea55ba02020-05-14 08:30:08 -0400103 help
104 This option determines if U-Boot forces gcc to inline the functions
105 developers have marked 'inline'. Doing so takes away freedom from gcc to
106 do what it thinks is best, which is desirable in some cases for size
107 reasons.
108
109config SPL_OPTIMIZE_INLINING
110 bool "Allow compiler to uninline functions marked 'inline' in SPL"
111 depends on SPL
Tom Riniea55ba02020-05-14 08:30:08 -0400112 help
113 This option determines if U-Boot forces gcc to inline the functions
114 developers have marked 'inline'. Doing so takes away freedom from gcc to
115 do what it thinks is best, which is desirable in some cases for size
116 reasons.
117
Marek BehĂșnd72a3b72021-05-20 13:24:03 +0200118config ARCH_SUPPORTS_LTO
119 bool
120
121config LTO
122 bool "Enable Link Time Optimizations"
123 depends on ARCH_SUPPORTS_LTO
Marek BehĂșnd72a3b72021-05-20 13:24:03 +0200124 help
125 This option enables Link Time Optimization (LTO), a mechanism which
126 allows the compiler to optimize between different compilation units.
127
128 This can optimize away dead code paths, resulting in smaller binary
129 size (if CC_OPTIMIZE_FOR_SIZE is enabled).
130
131 This option is not available for every architecture and may
132 introduce bugs.
133
134 Currently, when compiling with GCC, due to a weird bug regarding
135 jobserver, the final linking will not respect make's --jobs argument.
136 Instead all available processors will be used (as reported by the
137 nproc command).
138
139 If unsure, say n.
140
Tom Riniea55ba02020-05-14 08:30:08 -0400141config TPL_OPTIMIZE_INLINING
142 bool "Allow compiler to uninline functions marked 'inline' in TPL"
143 depends on TPL
Tom Rini5cbb29e2020-05-14 08:30:07 -0400144 help
145 This option determines if U-Boot forces gcc to inline the functions
146 developers have marked 'inline'. Doing so takes away freedom from gcc to
147 do what it thinks is best, which is desirable in some cases for size
148 reasons.
149
Christian Gmeiner0e7c0712018-04-09 17:11:45 +0200150config CC_COVERAGE
151 bool "Enable code coverage analysis"
152 depends on SANDBOX
153 help
154 Enabling this option will pass "--coverage" to gcc to compile
155 and link code instrumented for coverage analysis.
156
Andrew Scullf9a2c5e2022-05-30 10:00:05 +0000157config ASAN
158 bool "Enable AddressSanitizer"
159 depends on SANDBOX
160 help
161 Enables AddressSanitizer to discover out-of-bounds accesses,
162 use-after-free, double-free and memory leaks.
163
Andrew Sculle184c5b2022-05-30 10:00:09 +0000164config FUZZ
165 bool "Enable fuzzing"
166 depends on CC_IS_CLANG
167 depends on DM_FUZZING_ENGINE
168 select ASAN
169 help
170 Enables the fuzzing infrastructure to generate fuzzing data and run
171 fuzz tests.
172
Tom Rini7c34ae42020-05-14 08:30:06 -0400173config CC_HAS_ASM_INLINE
174 def_bool $(success,echo 'void foo(void) { asm inline (""); }' | $(CC) -x c - -c -o /dev/null)
175
Peng Fanf08fa492020-08-06 12:42:45 +0300176config XEN
177 bool "Select U-Boot be run as a bootloader for XEN Virtual Machine"
Michal Simek300adaa2023-04-18 14:51:55 +0200178 depends on ARM64
Michal Simek90dccc22023-04-06 10:04:15 +0200179 select SSCANF
Peng Fanf08fa492020-08-06 12:42:45 +0300180 help
181 Enabling this option will make U-Boot be run as a bootloader
182 for XEN [1] Virtual Machine.
183
184 Xen is a virtual machine monitor (VMM) or a type-1 hypervisor with support
185 for para-virtualization. Xen can organize the safe execution of several
186 virtual machines on the same physical system with performance close to
187 native. It is used as the basis for a number of different commercial and
188 open source applications, such as: server virtualization, Infrastructure
189 as a Service (IaaS), desktop virtualization, security applications,
190 embedded and hardware appliances.
191 Xen has a special VM called Domain-0 that runs the Dom0 kernel and allows
192 Xen to use the device drivers for the Domain-0 kernel by default.
193
194 [1] - https://xenproject.org/
195
Adam Ford58dbf862018-02-06 07:58:59 -0600196config ENV_VARS_UBOOT_CONFIG
197 bool "Add arch, board, vendor and soc variables to default environment"
198 help
199 Define this in order to add variables describing the
200 U-Boot build configuration to the default environment.
201 These will be named arch, cpu, board, vendor, and soc.
202 Enabling this option will cause the following to be defined:
203 - CONFIG_SYS_ARCH
204 - CONFIG_SYS_CPU
205 - CONFIG_SYS_BOARD
206 - CONFIG_SYS_VENDOR
207 - CONFIG_SYS_SOC
208
Ramon Fried99826612018-08-14 01:00:04 +0300209config NR_DRAM_BANKS
210 int "Number of DRAM banks"
Amit Singh Tomar82704fa2020-04-19 19:28:34 +0530211 default 1 if ARCH_SUNXI || ARCH_OWL
Paul Kocialkowski06ce7322024-07-28 22:24:59 +0200212 default 2 if OMAP34XX
Ramon Fried99826612018-08-14 01:00:04 +0300213 default 4
214 help
215 This defines the number of DRAM banks.
216
Derald D. Woodseb730bd2018-01-22 17:17:10 -0600217config SYS_BOOT_GET_CMDLINE
218 bool "Enable kernel command line setup"
219 help
220 Enables allocating and saving kernel cmdline in space between
221 "bootm_low" and "bootm_low" + BOOTMAPSZ.
222
Tom Rinic253f122022-05-12 10:02:06 -0400223config SYS_BARGSIZE
224 int "Size of kernel command line buffer in bytes"
225 depends on SYS_BOOT_GET_CMDLINE
226 default 512
227 help
228 Buffer size for Boot Arguments which are passed to the application
229 (usually a Linux kernel) when it is booted
230
Derald D. Woodseb730bd2018-01-22 17:17:10 -0600231config SYS_BOOT_GET_KBD
232 bool "Enable kernel board information setup"
233 help
234 Enables allocating and saving a kernel copy of the bd_info in
235 space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
236
Tom Rini4ddbade2022-05-25 12:16:03 -0400237config HAS_CUSTOM_SYS_INIT_SP_ADDR
238 bool "Use a custom location for the initial stack pointer address"
239 depends on ARC || (ARM && !INIT_SP_RELATIVE) || MIPS || PPC || RISCV
Paul Kocialkowskibba0ae02024-07-28 22:24:56 +0200240 default y if OMAP34XX || AM33XX || AM43XX || DRA7XX
Tom Rini4ddbade2022-05-25 12:16:03 -0400241 default y if TFABOOT
242 help
243 Typically, we use an initial stack pointer address that is calculated
Tom Rini6a5dccc2022-11-16 13:10:41 -0500244 by taking the statically defined CFG_SYS_INIT_RAM_ADDR, adding the
245 statically defined CFG_SYS_INIT_RAM_SIZE and then subtracting the
Tom Rini4ddbade2022-05-25 12:16:03 -0400246 build-time constant of GENERATED_GBL_DATA_SIZE. On MIPS a different
247 but statica calculation is performed. However, some platforms will
248 take a different approach. Say Y here to define the address statically
249 instead.
250
251config CUSTOM_SYS_INIT_SP_ADDR
252 hex "Static location for the initial stack pointer"
253 depends on HAS_CUSTOM_SYS_INIT_SP_ADDR
Paul Kocialkowski50056582024-07-28 22:24:51 +0200254 default 0x4020ff00 if OMAP34XX
Paul Kocialkowski261bd962024-07-28 22:24:53 +0200255 default 0x4030ff00 if AM33XX
Paul Kocialkowskiaf6acb42024-07-28 22:24:54 +0200256 default 0x4033ff00 if AM43XX
Paul Kocialkowskibba0ae02024-07-28 22:24:56 +0200257 default 0x4037ff00 if DRA7XX
Simon Glass72cc5382022-10-20 18:22:39 -0600258 default TEXT_BASE if TFABOOT
Tom Rini4ddbade2022-05-25 12:16:03 -0400259
Simon Glass838723b2015-02-11 16:32:59 -0700260config SYS_MALLOC_F
261 bool "Enable malloc() pool before relocation"
Masahiro Yamadac6988242015-03-19 19:42:55 +0900262 default y if DM
Simon Glassb24fdd42018-12-03 04:37:17 -0700263
Simon Glass838723b2015-02-11 16:32:59 -0700264 help
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400265 Before relocation, memory is very limited on many platforms. Still,
Simon Glass838723b2015-02-11 16:32:59 -0700266 we can provide a small malloc() pool if needed. Driver model in
267 particular needs this to operate, so that it can allocate the
268 initial serial device and any others that are needed.
269
270config SYS_MALLOC_F_LEN
271 hex "Size of malloc() pool before relocation"
272 depends on SYS_MALLOC_F
Tom Rini324cf142022-04-07 12:33:23 -0400273 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlmane60b92e2024-03-02 19:16:12 +0000274 ROCKCHIP_RV1108
Tom Rini324cf142022-04-07 12:33:23 -0400275 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
276 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
277 ROCKCHIP_RK322X || X86
Tom Riniae683732022-04-07 12:33:24 -0400278 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rini324cf142022-04-07 12:33:23 -0400279 default 0x1800 if ARCH_TEGRA
280 default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
281 ROCKCHIP_RK3399
282 default 0x8000 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800283 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rini324cf142022-04-07 12:33:23 -0400284 default 0x2000
Simon Glass838723b2015-02-11 16:32:59 -0700285 help
Simon Glassc1aae9b2023-09-26 08:14:29 -0600286 Size of the malloc() pool for use before relocation. If
287 this is defined, then a very simple malloc() implementation
288 will become available before relocation. The address is just
289 below the global data, and the stack is moved down to make
290 space.
291
292 This feature allocates regions with increasing addresses
293 within the region. calloc() is supported, but realloc()
294 is not available. free() is supported but does nothing.
295 The memory will be freed (or in fact just forgotten) when
296 U-Boot relocates itself.
Simon Glass838723b2015-02-11 16:32:59 -0700297
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530298config SYS_MALLOC_LEN
299 hex "Define memory for Dynamic allocation"
Tom Rini4c538442022-04-14 11:34:47 -0400300 default 0x4000000 if SANDBOX
Tom Rinie065fb12021-08-28 21:34:49 -0400301 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rinie065fb12021-08-28 21:34:49 -0400302 default 0x200000 if ARCH_BMIPS || X86
Andre Przywaraa2860fb2022-07-03 00:47:20 +0100303 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
304 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
305 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rinie065fb12021-08-28 21:34:49 -0400306 default 0x400000
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530307 help
308 This defines memory to be allocated for Dynamic allocation
309 TODO: Use for other architectures
310
Simon Glass2f7409a2023-09-26 08:14:24 -0600311config SPL_SYS_MALLOC_F
312 bool "Enable malloc() pool in SPL"
313 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
314 default y
315 help
316 In SPL memory is very limited on many platforms. Still,
317 we can provide a small malloc() pool if needed. Driver model in
318 particular needs this to operate, so that it can allocate the
319 initial serial device and any others that are needed.
320
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800321config SPL_SYS_MALLOC_F_LEN
Simon Glassbbfdaf32021-01-21 13:57:06 -0700322 hex "Size of malloc() pool in SPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600323 depends on SPL_SYS_MALLOC_F
Marek Vasute39fa7d2018-10-03 12:44:13 +0200324 default 0x2800 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800325 default 0x2000 if IMX8MQ
Michal Simek0601c1b2018-07-24 14:47:43 +0200326 default SYS_MALLOC_F_LEN
327 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600328 Sets the size of the malloc() pool in SPL. This is used for
329 driver model and other features, which must allocate memory for
330 data structures.
Philipp Tomsich10139352017-07-28 11:06:03 +0200331
Simon Glass67e3fca2023-09-26 08:14:16 -0600332 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glassbbfdaf32021-01-21 13:57:06 -0700333 malloc() region in SDRAM once it is inited.
334
Simon Glass2f7409a2023-09-26 08:14:24 -0600335config TPL_SYS_MALLOC_F
John Keepingcd689722023-11-14 11:30:17 +0000336 bool "Enable malloc() pool in TPL"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500337 depends on SYS_MALLOC_F && TPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600338 default y if SPL_SYS_MALLOC_F
Michal Simek0601c1b2018-07-24 14:47:43 +0200339 help
Simon Glassbbfdaf32021-01-21 13:57:06 -0700340 In TPL memory is very limited on many platforms. Still,
Michal Simek0601c1b2018-07-24 14:47:43 +0200341 we can provide a small malloc() pool if needed. Driver model in
342 particular needs this to operate, so that it can allocate the
343 initial serial device and any others that are needed.
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800344
Simon Glass2f7409a2023-09-26 08:14:24 -0600345config TPL_SYS_MALLOC_F_LEN
346 hex "Size of malloc() pool in TPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600347 depends on TPL_SYS_MALLOC_F
Simon Glass2f7409a2023-09-26 08:14:24 -0600348 default SPL_SYS_MALLOC_F_LEN
349 help
350 Sets the size of the malloc() pool in TPL. This is used for
351 driver model and other features, which must allocate memory for
352 data structures.
353
Sean Anderson3b004842022-03-23 14:04:48 -0400354config VALGRIND
355 bool "Inform valgrind about memory allocations"
Sean Anderson39866b62022-05-27 10:03:00 -0400356 depends on !RISCV
Sean Anderson3b004842022-03-23 14:04:48 -0400357 help
358 Valgrind is an instrumentation framework for building dynamic analysis
359 tools. In particular, it may be used to detect memory management bugs
360 in U-Boot. It relies on knowing when heap blocks are allocated in
361 order to give accurate results. This happens automatically for
362 standard allocator functions provided by the host OS. However, this
363 doesn't automatically happen for U-Boot's malloc implementation.
364
365 Enable this option to annotate U-Boot's malloc implementation so that
366 it can be handled accurately by Valgrind. If you aren't planning on
367 using valgrind to debug U-Boot, say 'n'.
368
Simon Glass2f7409a2023-09-26 08:14:24 -0600369config VPL_SYS_MALLOC_F
370 bool "Enable malloc() pool in VPL"
Simon Glasse7ca7da2022-04-30 00:56:53 -0600371 depends on SYS_MALLOC_F && VPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600372 default y if SPL_SYS_MALLOC_F
Simon Glasse7ca7da2022-04-30 00:56:53 -0600373 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600374 In VPL memory is very limited on many platforms. Still,
Simon Glasse7ca7da2022-04-30 00:56:53 -0600375 we can provide a small malloc() pool if needed. Driver model in
376 particular needs this to operate, so that it can allocate the
377 initial serial device and any others that are needed.
378
Simon Glass2f7409a2023-09-26 08:14:24 -0600379config VPL_SYS_MALLOC_F_LEN
380 hex "Size of malloc() pool in VPL before relocation"
Simon Glassadad2d02023-09-26 08:14:27 -0600381 depends on VPL_SYS_MALLOC_F
382 default SPL_SYS_MALLOC_F_LEN
Simon Glass2f7409a2023-09-26 08:14:24 -0600383 help
384 Sets the size of the malloc() pool in VPL. This is used for
385 driver model and other features, which must allocate memory for
386 data structures.
387
Tom Rinia50d5b52014-11-14 09:34:29 +0100388menuconfig EXPERT
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100389 bool "Configure standard U-Boot features (expert users)"
390 default y
391 help
392 This option allows certain base U-Boot options and settings
393 to be disabled or tweaked. This is for specialized
394 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400395 Use this only if you really know what you are doing.
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100396
397if EXPERT
398 config SYS_MALLOC_CLEAR_ON_INIT
399 bool "Init with zeros the memory reserved for malloc (slow)"
400 default y
401 help
402 This setting is enabled by default. The reserved malloc
403 memory is initialized with zeros, so first malloc calls
404 will return the pointer to the zeroed memory. But this
405 slows the boot time.
Tom Rinia50d5b52014-11-14 09:34:29 +0100406
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100407 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
408 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
409 Then the boot time can be significantly reduced.
410 Warning:
411 When disabling this, please check if malloc calls, maybe
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400412 should be replaced by calloc - if one expects zeroed memory.
Simon Glass86a64492016-06-30 10:52:20 -0600413
Shengyu Qu9b676302023-08-25 00:25:18 +0800414config SPL_SYS_MALLOC_CLEAR_ON_INIT
415 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
416 depends on SPL
417 default SYS_MALLOC_CLEAR_ON_INIT
418 help
419 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
420 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
421 that must have particular memory regions zero'ed before first use.
422 If SYS_SPL_MALLOC_START is configured to be in such region, this
423 option should be enabled.
424
Marek Bykowskib4032a72020-04-29 18:23:07 +0200425config SYS_MALLOC_DEFAULT_TO_INIT
426 bool "Default malloc to init while reserving the memory for it"
Marek Bykowskib4032a72020-04-29 18:23:07 +0200427 help
428 It may happen that one needs to move the dynamic allocation
429 from one to another memory range, eg. when moving the malloc
430 from the limited static to a potentially large dynamic (DDR)
431 memory.
432
433 If so then on top of setting the updated memory aside one
434 needs to bring the malloc init.
435
436 If such a scenario is sought choose yes.
437
Simon Glass86a64492016-06-30 10:52:20 -0600438config TOOLS_DEBUG
439 bool "Enable debug information for tools"
440 help
441 Enable generation of debug information for tools such as mkimage.
442 This can be used for debugging purposes. With debug information
443 it is possible to set breakpoints on particular lines, single-step
444 debug through the source code, etc.
445
Robert P. J. Daye4829f32017-01-02 16:32:13 -0500446endif # EXPERT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900447
448config PHYS_64BIT
449 bool "64bit physical address support"
Johan Jonker02e3e062023-03-13 01:33:23 +0100450 select FDT_64BIT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900451 help
452 Say Y here to support 64bit physical memory address.
453 This can be used not only for 64bit SoCs, but also for
Chris Packham2b52a242019-01-13 22:13:19 +1300454 large physical address extension on 32bit SoCs.
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900455
Johan Jonker02e3e062023-03-13 01:33:23 +0100456config FDT_64BIT
457 bool "64bit fdt address support"
458 help
459 Say Y here to support 64bit fdt addresses.
460 This can be used not only for 64bit SoCs, but also
461 for large address extensions on 32bit SoCs.
462
Simon Glassf69c0092020-07-19 13:55:52 -0600463config HAS_ROM
464 bool
465 select BINMAN
466 help
467 Enables building of a u-boot.rom target. This collects U-Boot and
468 any necessary binary blobs.
469
Stefan Roesee915cbc2019-04-03 15:24:50 +0200470config SPL_IMAGE
471 string "SPL image used in the combined SPL+U-Boot image"
472 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
473 default "spl/u-boot-spl.bin"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500474 depends on SPL
Stefan Roesee915cbc2019-04-03 15:24:50 +0200475 help
476 Select the SPL build target that shall be generated by the SPL
477 build process (default spl/u-boot-spl.bin). This image will be
478 used to generate a combined image with SPL and main U-Boot
479 proper as one single image.
480
Alper Nebi Yasak2beb0f42022-01-29 18:25:30 +0300481config REMAKE_ELF
482 bool "Recreate an ELF image from raw U-Boot binary"
483 help
484 Enable this to recreate an ELF image (u-boot.elf) from the raw
485 U-Boot binary (u-boot.bin), which may already have been statically
486 relocated and may already have a device-tree appended to it.
487
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530488config BUILD_TARGET
489 string "Build target special images"
Hai Pham9046b5f2023-02-28 22:22:03 +0100490 default "u-boot-elf.srec" if RCAR_64
Marek Vasut9a976c12023-02-28 07:22:21 +0100491 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
492 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
493 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
494 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreen8fb280c2019-03-20 13:15:21 -0700495 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
496 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glass6a50cd12020-07-19 13:56:12 -0600497 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland3be2d9f2023-01-22 11:23:51 -0600498 RISCV || ARCH_ZYNQMP)
Pali RohĂĄra4a4f952022-12-29 02:39:19 +0100499 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530500 help
501 Some SoCs need special image types (e.g. U-Boot binary
502 with a special header) as build targets. By defining
503 CONFIG_BUILD_TARGET in the SoC / board header, this
504 special image will be automatically built upon calling
505 make / buildman.
506
Tom Rini876df342022-03-30 18:07:11 -0400507config HAS_BOARD_SIZE_LIMIT
508 bool "Define a maximum size for the U-Boot image"
Marek Vasutb42de382024-02-11 18:34:29 +0100509 default y if RCAR_32 || RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400510 help
511 In some cases, we need to enforce a hard limit on how big the U-Boot
512 image itself can be.
513
514config BOARD_SIZE_LIMIT
515 int "Maximum size of the U-Boot image in bytes"
Marek Vasutb42de382024-02-11 18:34:29 +0100516 default 524288 if RCAR_32
Hai Pham9046b5f2023-02-28 22:22:03 +0100517 default 1048576 if RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400518 depends on HAS_BOARD_SIZE_LIMIT
519 help
520 Maximum size of the U-Boot image. When defined, the build system
521 checks that the actual size does not exceed it. This does not
522 include SPL nor TPL, on platforms that use that functionality, they
523 have a separate option to restict size.
524
Tom Rinie478f702019-06-02 08:57:32 -0400525config SYS_CUSTOM_LDSCRIPT
526 bool "Use a custom location for the U-Boot linker script"
527 help
528 Normally when linking U-Boot we will look in the board directory,
529 the CPU directory and finally the "cpu" directory of the architecture
530 for the ile "u-boot.lds" and use that as our linker. However, in
531 some cases we need to provide a different linker script. To do so,
532 enable this option and then provide the location under
533 CONFIG_SYS_LDSCRIPT.
534
535config SYS_LDSCRIPT
536 depends on SYS_CUSTOM_LDSCRIPT
537 string "Custom ldscript location"
538 help
539 Path within the source tree to the linker script to use for the
540 main U-Boot binary.
541
Tom Rini0997ee02021-08-23 10:25:31 -0400542config SYS_LOAD_ADDR
543 hex "Address in memory to use by default"
544 default 0x01000000 if ARCH_SOCFPGA
545 default 0x02000000 if PPC || X86
Icenowy Zheng711fab32022-01-29 10:23:09 -0500546 default 0x81000000 if MACH_SUNIV
Tom Rini0997ee02021-08-23 10:25:31 -0400547 default 0x22000000 if MACH_SUN9I
Icenowy Zheng711fab32022-01-29 10:23:09 -0500548 default 0x42000000 if ARCH_SUNXI
Tom Rini0997ee02021-08-23 10:25:31 -0400549 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
550 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
551 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
552 default 0x80800000 if ARCH_MX7
553 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
554 help
555 Address in memory to use as the default safe load address.
556
Simon Goldschmidt9c055112019-10-22 21:29:46 +0200557config ERR_PTR_OFFSET
558 hex
559 default 0x0
560 help
561 Some U-Boot pointers have redundant information, so we can use a
562 scheme where we can return either an error code or a pointer with the
563 same return value. The default implementation just casts the pointer
564 to a number, however, this may fail on platforms where the end of the
565 address range is used for valid pointers (e.g. 0xffffff00 is a valid
566 heap pointer in socfpga SPL).
567 For such platforms, this value provides an upper range of those error
568 pointer values - up to 'MAX_ERRNO' bytes below this value must be
569 unused/invalid addresses.
570
Michal Simek5d458a12020-03-30 13:58:59 +0200571config PLATFORM_ELFENTRY
572 string
573 default "__start" if MIPS
574 default "_start"
575
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200576config STACK_SIZE
577 hex "Define max stack size that can be used by U-Boot"
Michal Simek2e53eb22022-09-19 14:21:02 +0200578 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200579 default 0x200000 if MICROBLAZE
580 default 0x1000000
581 help
582 Define Max stack size that can be used by U-Boot. This value is used
583 by the UEFI sub-system. On some boards initrd_high is calculated as
584 base stack pointer minus this stack size.
585
Tom Rini5c1e7272022-04-06 10:33:32 -0400586config SYS_MEM_TOP_HIDE
587 hex "Exclude some memory from U-Boot / OS information"
588 default 0x0
589 help
590 If set, this specified memory area will get subtracted from the top
591 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
592 gd->ram_size the OS / next stage should gets passed the now
593 "corrected" memory size and won't touch it either.
594 WARNING: Please make sure that this value is a multiple of the OS
595 page size.
596
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300597config SYS_HAS_SRAM
598 bool
599 default y if TARGET_PIC32MZDASK
600 default y if TARGET_DEVKIT8000
601 default y if TARGET_TRICORDER
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300602 help
603 Enable this to allow support for the on board SRAM.
604 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
605 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
606
Ovidiu Panait62749212020-07-24 14:12:10 +0300607config SYS_SRAM_BASE
608 hex
609 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait0a2ef262020-07-24 14:12:12 +0300610 default 0x40200000 if TARGET_DEVKIT8000
611 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panait62749212020-07-24 14:12:10 +0300612 default 0x0
613
Ovidiu Panaitcb229962020-07-24 14:12:11 +0300614config SYS_SRAM_SIZE
615 hex
616 default 0x00080000 if TARGET_PIC32MZDASK
617 default 0x10000 if TARGET_DEVKIT8000
618 default 0x10000 if TARGET_TRICORDER
619 default 0x0
620
Tom Rini7f184322022-10-28 20:27:07 -0400621config SYS_MONITOR_LEN
622 int "Maximum size in bytes reserved for U-Boot in memory"
623 default 1048576 if X86
Paul Kocialkowski656b2392024-07-28 22:24:57 +0200624 default 262144 if OMAP34XX
Andre Przywara5b3c3372022-11-19 16:10:59 +0000625 default 786432 if ARCH_SUNXI
Tom Rini7f184322022-10-28 20:27:07 -0400626 default 0
627 help
628 Size of memory reserved for monitor code, used to determine
629 _at_compile_time_ (!) if the environment is embedded within the
630 U-Boot image, or in a separate flash sector, among other uses where
631 we need to set a maximum size of the U-Boot binary itself that will
632 be loaded.
633
Ashok Reddy Soma1e6f9962022-01-17 10:16:50 +0100634config MP
635 bool "Support for multiprocessor"
636 help
637 This provides an option to bringup different processors
638 in multiprocessor cases.
639
Simon Glassf7b09e22023-09-14 10:55:54 -0600640config HAVE_TEXT_BASE
641 bool
642 depends on !NIOS2 && !XTENSA
643 depends on !EFI_APP
644 default y
645
646config TEXT_BASE
647 depends on HAVE_TEXT_BASE
648 default 0x0 if POSITION_INDEPENDENT
649 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
650 default 0x81700000 if MACH_SUNIV
651 default 0x2a000000 if MACH_SUN9I
652 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
653 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
654 hex "Text Base"
655 help
Jesse Taube93ee5c82023-08-24 21:59:48 -0400656 The address in memory that U-Boot will be copied and executed from
657 initially.
658
659config HAVE_SYS_UBOOT_START
660 bool "Use custom U-Boot Start"
661 depends on HAVE_TEXT_BASE
662 help
663 By default, the address in memory that U-Boot will be copied from
664 (TEXT_BASE) and the entry point are the same. Select this to start the
665 execution of U-Boot from a different address.
666 This may be required if a header or vector table needs to be copied
667 but not executed.
668
669config SYS_UBOOT_START
670 hex
671 depends on HAVE_TEXT_BASE
672 default TEXT_BASE
673 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
674 help
675 If TEXT_BASE differs from the start of execution, this sets the
676 address in memory that U-Boot will start execution from initially.
Simon Glassf7b09e22023-09-14 10:55:54 -0600677
678config HAVE_SYS_MONITOR_BASE
679 bool
680 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
681 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
682 depends on !EFI_APP
683 default y
684
685config SYS_MONITOR_BASE
686 depends on HAVE_SYS_MONITOR_BASE
687 hex "Physical start address of boot monitor code"
688 default TEXT_BASE
689 help
690 The physical start address of boot monitor code (which is the same as
691 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
692 when booting from flash.
693
694config SPL_SYS_MONITOR_BASE
695 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
696 hex "Physical start address of SPL monitor code"
697 default SPL_TEXT_BASE
698
699config TPL_SYS_MONITOR_BASE
700 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
701 hex "Physical start address of TPL monitor code"
702
703config DYNAMIC_SYS_CLK_FREQ
704 bool "Determine CPU clock frequency at run-time"
705 help
706 Implement a get_board_sys_clk function that will determine the CPU
707 clock frequency at run time, rather than define it statically.
708
709config SYS_CLK_FREQ
710 depends on !DYNAMIC_SYS_CLK_FREQ
711 int "CPU clock frequency"
712 default 125000000 if ARCH_LS1012A
713 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
714 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
715 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
716 default 66660000 if ARCH_T2080
717 default 33333333 if RCAR_GEN3
718 default 24000000 if ARCH_EXYNOS
719 default 20000000 if RCAR_GEN2
720 default 0
721 help
722 A static value for the CPU frequency. Note that if not required
723 for a given SoC, this can be left at 0.
Masahiro Yamada9eeddf22014-11-26 18:42:31 +0900724
Greg Malysa547f54c2024-03-19 22:16:07 -0400725config HAS_LDR
726 bool
727 help
728 Enables building .ldr targets for U-Boot and SPL. This does not
729 automatically build any additional targets with make or buildman.
730
731config LDR_CPU
732 string "CPU name to be passed to LDR utility."
733 depends on HAS_LDR
734 help
735 Set the CPU name for the -T parameter in the LDR utility. This is
736 generally used on processors from Analog Devices, but may be also
737 be useful for other vendors.
738
Emmanuel Vadotaa020992017-01-31 12:17:04 +0100739source "api/Kconfig"
740
Simon Glass06c10352023-09-14 10:55:40 -0600741endmenu # General setup
742
Simon Glass91944df2021-10-14 12:47:54 -0600743source "boot/Kconfig"
744
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900745source "common/Kconfig"
746
Simon Glass29499a02016-01-17 20:53:51 -0700747source "cmd/Kconfig"
748
Patrick Delaunaydc280602017-01-27 11:00:35 +0100749source "disk/Kconfig"
750
Masahiro Yamada9fadbc82014-09-22 19:59:05 +0900751source "dts/Kconfig"
752
Simon Glass547cb402017-08-03 12:21:49 -0600753source "env/Kconfig"
754
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900755source "net/Kconfig"
756
757source "drivers/Kconfig"
758
759source "fs/Kconfig"
760
761source "lib/Kconfig"
Simon Glass9dd430d2015-02-05 21:41:37 -0700762
763source "test/Kconfig"
Simon Glass31b24b42020-09-10 20:21:27 -0600764
765source "tools/Kconfig"