blob: a206d1f81249d419e97d8ad8fefc29d3a416e724 [file] [log] [blame]
Masahiro Yamada51631252014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
Hiago De Franco1bf048f2024-08-19 13:24:49 -03003# see the file Documentation/kbuild/kconfig-language.rst in the
Robert P. J. Day59d7c342016-04-16 05:53:07 -04004# Linux kernel source tree.
Masahiro Yamada51631252014-07-30 14:08:15 +09005#
Tom Rini5972ff02020-03-11 18:11:17 -04006mainmenu "U-Boot $(UBOOTVERSION) Configuration"
Masahiro Yamada51631252014-07-30 14:08:15 +09007
Tom Rini61139e22020-05-18 14:48:00 -04008comment "Compiler: $(CC_VERSION_TEXT)"
9
Tom Rinia9610bd2020-05-14 08:30:01 -040010source "scripts/Kconfig.include"
11
Simon Glass66afaef2015-02-24 22:26:19 +090012# Allow defaults in arch-specific code to override any given here
13source "arch/Kconfig"
14
Masahiro Yamada51631252014-07-30 14:08:15 +090015menu "General setup"
16
Heinrich Schuchardt4c7a2112017-10-19 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 Rini524e98a2019-05-29 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 Yamadae91c3c32014-08-22 19:42:27 +090030config LOCALVERSION
31 string "Local version - append to U-Boot release"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090032 help
33 Append an extra string to the end of your U-Boot version.
Robert P. J. Day59d7c342016-04-16 05:53:07 -040034 This will show up in your boot log, for example.
Masahiro Yamadae91c3c32014-08-22 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 Yamadae91c3c32014-08-22 19:42:27 +090042 default y
43 help
44 This will try to automatically determine if the current tree is a
Robert P. J. Day59d7c342016-04-16 05:53:07 -040045 release tree by looking for Git tags that belong to the current
Masahiro Yamadae91c3c32014-08-22 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. Day59d7c342016-04-16 05:53:07 -040049 if a Git-based tree is found. The string generated by this will be
Masahiro Yamadae91c3c32014-08-22 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 Rini473fc272021-06-17 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 Andersonf38cb2a2022-02-22 12:19:24 -050075choice
76 prompt "Optimization level"
77 default CC_OPTIMIZE_FOR_SIZE
78
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090079config CC_OPTIMIZE_FOR_SIZE
80 bool "Optimize for size"
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090081 help
Sean Andersonf38cb2a2022-02-22 12:19:24 -050082 Enabling this option will pass "-Os" to gcc, resulting in a smaller
83 U-Boot image.
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090084
85 This option is enabled by default for U-Boot.
86
Sean Andersonf38cb2a2022-02-22 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 Andersone9765042022-02-22 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 Andersonf38cb2a2022-02-22 12:19:24 -050099endchoice
100
Tom Rini1f1a0f32020-05-14 08:30:07 -0400101config OPTIMIZE_INLINING
Tom Rini72c4d402020-05-14 08:30:08 -0400102 bool "Allow compiler to uninline functions marked 'inline' in full U-Boot"
Tom Rini72c4d402020-05-14 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 Rini72c4d402020-05-14 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 BehĂșnc1094982021-05-20 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 BehĂșnc1094982021-05-20 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 Rini72c4d402020-05-14 08:30:08 -0400141config TPL_OPTIMIZE_INLINING
142 bool "Allow compiler to uninline functions marked 'inline' in TPL"
143 depends on TPL
Tom Rini1f1a0f32020-05-14 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 Gmeiner52ff8022018-04-09 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 Scull1e578ed2022-05-30 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 Scull36f641c2022-05-30 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 Rini67f51b42020-05-14 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 Fan75189732020-08-06 12:42:45 +0300176config XEN
177 bool "Select U-Boot be run as a bootloader for XEN Virtual Machine"
Michal Simek53948672023-04-18 14:51:55 +0200178 depends on ARM64
Michal Simek44cd7612023-04-06 10:04:15 +0200179 select SSCANF
Peng Fan75189732020-08-06 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 Fordd021e942018-02-06 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 Fried999a7722018-08-14 01:00:04 +0300209config NR_DRAM_BANKS
210 int "Number of DRAM banks"
Oliver Gaskell38742c72024-09-12 16:50:54 +0100211 default 1 if ARCH_SC5XX || ARCH_SUNXI || ARCH_OWL
Paul Kocialkowski5e0620f2024-07-28 22:24:59 +0200212 default 2 if OMAP34XX
Ramon Fried999a7722018-08-14 01:00:04 +0300213 default 4
214 help
215 This defines the number of DRAM banks.
216
Derald D. Woods405fc832018-01-22 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 Rini68894122022-05-12 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. Woods405fc832018-01-22 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 Rinieaf6ea62022-05-25 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 Kocialkowski2bedbf52024-07-28 22:24:56 +0200240 default y if OMAP34XX || AM33XX || AM43XX || DRA7XX
Tom Rinieaf6ea62022-05-25 12:16:03 -0400241 default y if TFABOOT
242 help
243 Typically, we use an initial stack pointer address that is calculated
Tom Rini65cc0e22022-11-16 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 Rinieaf6ea62022-05-25 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 Kocialkowskib979fd52024-07-28 22:24:51 +0200254 default 0x4020ff00 if OMAP34XX
Paul Kocialkowski7cf8ded2024-07-28 22:24:53 +0200255 default 0x4030ff00 if AM33XX
Paul Kocialkowskie7f60582024-07-28 22:24:54 +0200256 default 0x4033ff00 if AM43XX
Paul Kocialkowski2bedbf52024-07-28 22:24:56 +0200257 default 0x4037ff00 if DRA7XX
Simon Glass98463902022-10-20 18:22:39 -0600258 default TEXT_BASE if TFABOOT
Tom Rinieaf6ea62022-05-25 12:16:03 -0400259
Simon Glassb724bd72015-02-11 16:32:59 -0700260config SYS_MALLOC_F
261 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +0900262 default y if DM
Simon Glass15a5c722018-12-03 04:37:17 -0700263
Simon Glassb724bd72015-02-11 16:32:59 -0700264 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400265 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 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 Rinie0568922022-04-07 12:33:23 -0400273 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlman41098d22024-03-02 19:16:12 +0000274 ROCKCHIP_RV1108
Tom Rinie0568922022-04-07 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 Rini4448d0c2022-04-07 12:33:24 -0400278 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rinie0568922022-04-07 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 Fan19ed25b2022-09-15 09:38:18 +0800283 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rinie0568922022-04-07 12:33:23 -0400284 default 0x2000
Simon Glassb724bd72015-02-11 16:32:59 -0700285 help
Simon Glass5bcacd12023-09-26 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 Glassb724bd72015-02-11 16:32:59 -0700297
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530298config SYS_MALLOC_LEN
299 hex "Define memory for Dynamic allocation"
Tom Rini46d940c2022-04-14 11:34:47 -0400300 default 0x4000000 if SANDBOX
Tom Rini7cfbba32021-08-28 21:34:49 -0400301 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rini7cfbba32021-08-28 21:34:49 -0400302 default 0x200000 if ARCH_BMIPS || X86
Andre Przywara1bf98bd2022-07-03 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 Rini7cfbba32021-08-28 21:34:49 -0400306 default 0x400000
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530307 help
308 This defines memory to be allocated for Dynamic allocation
309 TODO: Use for other architectures
310
Simon Glassfd8497d2023-09-26 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 Yanf1896c42017-07-24 17:43:34 +0800321config SPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700322 hex "Size of malloc() pool in SPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600323 depends on SPL_SYS_MALLOC_F
Marek Vasut56023302018-10-03 12:44:13 +0200324 default 0x2800 if RCAR_GEN3
Peng Fan19ed25b2022-09-15 09:38:18 +0800325 default 0x2000 if IMX8MQ
Michal Simek14aa2102018-07-24 14:47:43 +0200326 default SYS_MALLOC_F_LEN
327 help
Simon Glassfd8497d2023-09-26 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 Tomsichae2cee22017-07-28 11:06:03 +0200331
Simon Glass82e26e02023-09-26 08:14:16 -0600332 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glass14261742021-01-21 13:57:06 -0700333 malloc() region in SDRAM once it is inited.
334
Simon Glassfd8497d2023-09-26 08:14:24 -0600335config TPL_SYS_MALLOC_F
John Keepinge319ef02023-11-14 11:30:17 +0000336 bool "Enable malloc() pool in TPL"
Simon Glassfd8497d2023-09-26 08:14:24 -0600337 depends on SYS_MALLOC_F && TPL
338 default y if SPL_SYS_MALLOC_F
339 help
340 In TPL memory is very limited on many platforms. Still,
341 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.
344
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200345config TPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700346 hex "Size of malloc() pool in TPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600347 depends on TPL_SYS_MALLOC_F
Simon Glass14261742021-01-21 13:57:06 -0700348 default SPL_SYS_MALLOC_F_LEN
Michal Simek14aa2102018-07-24 14:47:43 +0200349 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600350 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.
Andy Yanf1896c42017-07-24 17:43:34 +0800353
Sean Andersonfba08822022-03-23 14:04:48 -0400354config VALGRIND
355 bool "Inform valgrind about memory allocations"
Sean Anderson1e5514f2022-05-27 10:03:00 -0400356 depends on !RISCV
Sean Andersonfba08822022-03-23 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 Glassfd8497d2023-09-26 08:14:24 -0600369config VPL_SYS_MALLOC_F
370 bool "Enable malloc() pool in VPL"
371 depends on SYS_MALLOC_F && VPL
372 default y if SPL_SYS_MALLOC_F
373 help
374 In VPL memory is very limited on many platforms. Still,
375 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 Glass747093d2022-04-30 00:56:53 -0600379config VPL_SYS_MALLOC_F_LEN
380 hex "Size of malloc() pool in VPL before relocation"
Simon Glass3d6d5072023-09-26 08:14:27 -0600381 depends on VPL_SYS_MALLOC_F
382 default SPL_SYS_MALLOC_F_LEN
Simon Glass747093d2022-04-30 00:56:53 -0600383 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600384 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.
Simon Glass747093d2022-04-30 00:56:53 -0600387
Tom Rini1bf09792014-11-14 09:34:29 +0100388menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 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. Day59d7c342016-04-16 05:53:07 -0400395 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100396
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100397if 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.
406
407 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. Day59d7c342016-04-16 05:53:07 -0400412 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600413
Shengyu Qudd1eb1a2023-08-25 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 Bykowski9297e362020-04-29 18:23:07 +0200425config SYS_MALLOC_DEFAULT_TO_INIT
426 bool "Default malloc to init while reserving the memory for it"
Marek Bykowski9297e362020-04-29 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 Glass022885c2016-06-30 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. Day266aa862017-01-02 16:32:13 -0500446endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900447
448config PHYS_64BIT
449 bool "64bit physical address support"
Johan Jonker53c50932023-03-13 01:33:23 +0100450 select FDT_64BIT
Masahiro Yamadabb6b1422016-07-25 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 Packham3aeb7712019-01-13 22:13:19 +1300454 large physical address extension on 32bit SoCs.
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900455
Johan Jonker53c50932023-03-13 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 Glassbcd4e6f2020-07-19 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 Roese9ea6f712019-04-03 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 Ford05705562019-08-13 14:32:30 -0500474 depends on SPL
Stefan Roese9ea6f712019-04-03 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 Yasaka8c281d2022-01-29 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 Tekidc146ca2019-01-18 12:52:49 +0530488config BUILD_TARGET
489 string "Build target special images"
Hai Pham5a3b0742023-02-28 22:22:03 +0100490 default "u-boot-elf.srec" if RCAR_64
Marek Vasut66e49f02023-02-28 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 Westergreene3ada912019-03-20 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 Glassa32dd072020-07-19 13:56:12 -0600497 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland25bc7bf2023-01-22 11:23:51 -0600498 RISCV || ARCH_ZYNQMP)
Pali RohĂĄrf0b1a1e2022-12-29 02:39:19 +0100499 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekidc146ca2019-01-18 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 Rini95b64172022-03-30 18:07:11 -0400507config HAS_BOARD_SIZE_LIMIT
508 bool "Define a maximum size for the U-Boot image"
Marek Vasut1c987e62024-02-11 18:34:29 +0100509 default y if RCAR_32 || RCAR_64
Tom Rini95b64172022-03-30 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 Vasut1c987e62024-02-11 18:34:29 +0100516 default 524288 if RCAR_32
Hai Pham5a3b0742023-02-28 22:22:03 +0100517 default 1048576 if RCAR_64
Tom Rini95b64172022-03-30 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 Rinid760a5e2019-06-02 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 Rini49c8ef02021-08-23 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 Zhengb6ffd582022-01-29 10:23:09 -0500546 default 0x81000000 if MACH_SUNIV
Tom Rini49c8ef02021-08-23 10:25:31 -0400547 default 0x22000000 if MACH_SUN9I
Icenowy Zhengb6ffd582022-01-29 10:23:09 -0500548 default 0x42000000 if ARCH_SUNXI
Tom Rini49c8ef02021-08-23 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
Oliver Gaskell38742c72024-09-12 16:50:54 +0100554 default 0x0 if ARCH_SC5XX
Tom Rini49c8ef02021-08-23 10:25:31 -0400555 help
556 Address in memory to use as the default safe load address.
557
Simon Goldschmidt93db2b82019-10-22 21:29:46 +0200558config ERR_PTR_OFFSET
559 hex
560 default 0x0
561 help
562 Some U-Boot pointers have redundant information, so we can use a
563 scheme where we can return either an error code or a pointer with the
564 same return value. The default implementation just casts the pointer
565 to a number, however, this may fail on platforms where the end of the
566 address range is used for valid pointers (e.g. 0xffffff00 is a valid
567 heap pointer in socfpga SPL).
568 For such platforms, this value provides an upper range of those error
569 pointer values - up to 'MAX_ERRNO' bytes below this value must be
570 unused/invalid addresses.
571
Michal Simeke14ba8a2020-03-30 13:58:59 +0200572config PLATFORM_ELFENTRY
573 string
574 default "__start" if MIPS
575 default "_start"
576
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200577config STACK_SIZE
578 hex "Define max stack size that can be used by U-Boot"
Michal Simekf6aebdf2022-09-19 14:21:02 +0200579 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200580 default 0x200000 if MICROBLAZE
581 default 0x1000000
582 help
583 Define Max stack size that can be used by U-Boot. This value is used
584 by the UEFI sub-system. On some boards initrd_high is calculated as
585 base stack pointer minus this stack size.
586
Tom Rini24c904f2022-04-06 10:33:32 -0400587config SYS_MEM_TOP_HIDE
588 hex "Exclude some memory from U-Boot / OS information"
589 default 0x0
590 help
591 If set, this specified memory area will get subtracted from the top
592 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
593 gd->ram_size the OS / next stage should gets passed the now
594 "corrected" memory size and won't touch it either.
595 WARNING: Please make sure that this value is a multiple of the OS
596 page size.
597
Ovidiu Panait7be19312020-07-24 14:12:09 +0300598config SYS_HAS_SRAM
599 bool
600 default y if TARGET_PIC32MZDASK
601 default y if TARGET_DEVKIT8000
602 default y if TARGET_TRICORDER
Ovidiu Panait7be19312020-07-24 14:12:09 +0300603 help
604 Enable this to allow support for the on board SRAM.
605 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
606 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
607
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300608config SYS_SRAM_BASE
609 hex
610 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait9a17bfb2020-07-24 14:12:12 +0300611 default 0x40200000 if TARGET_DEVKIT8000
612 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300613 default 0x0
614
Ovidiu Panait9f63f022020-07-24 14:12:11 +0300615config SYS_SRAM_SIZE
616 hex
617 default 0x00080000 if TARGET_PIC32MZDASK
618 default 0x10000 if TARGET_DEVKIT8000
619 default 0x10000 if TARGET_TRICORDER
620 default 0x0
621
Tom Rini08574ed2022-10-28 20:27:07 -0400622config SYS_MONITOR_LEN
623 int "Maximum size in bytes reserved for U-Boot in memory"
624 default 1048576 if X86
Paul Kocialkowski0844ed32024-07-28 22:24:57 +0200625 default 262144 if OMAP34XX
Andre Przywarab072aef2022-11-19 16:10:59 +0000626 default 786432 if ARCH_SUNXI
Tom Rini08574ed2022-10-28 20:27:07 -0400627 default 0
628 help
629 Size of memory reserved for monitor code, used to determine
630 _at_compile_time_ (!) if the environment is embedded within the
631 U-Boot image, or in a separate flash sector, among other uses where
632 we need to set a maximum size of the U-Boot binary itself that will
633 be loaded.
634
Ashok Reddy Soma480245c2022-01-17 10:16:50 +0100635config MP
636 bool "Support for multiprocessor"
637 help
638 This provides an option to bringup different processors
639 in multiprocessor cases.
640
Simon Glass064a57d2023-09-14 10:55:54 -0600641config HAVE_TEXT_BASE
642 bool
643 depends on !NIOS2 && !XTENSA
644 depends on !EFI_APP
645 default y
646
647config TEXT_BASE
648 depends on HAVE_TEXT_BASE
649 default 0x0 if POSITION_INDEPENDENT
650 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
651 default 0x81700000 if MACH_SUNIV
652 default 0x2a000000 if MACH_SUN9I
653 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
654 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
Oliver Gaskell38742c72024-09-12 16:50:54 +0100655 default 0x96000000 if ARCH_SC5XX && SC59X_64
Oliver Gaskelle91d85e2024-09-12 16:50:56 +0100656 default 0xB2200000 if ARCH_SC5XX && SC59X
Oliver Gaskell07735ee2024-09-12 16:50:58 +0100657 default 0x89200000 if ARCH_SC5XX && TARGET_SC584_EZKIT
Oliver Gaskell0370f302024-09-12 16:51:00 +0100658 default 0xC2200000 if ARCH_SC5XX && (TARGET_SC589_EZKIT || TARGET_SC589_MINI)
Oliver Gaskell1083fa72024-09-12 16:51:01 +0100659 default 0x82200000 if ARCH_SC5XX && SC57X
Simon Glass064a57d2023-09-14 10:55:54 -0600660 hex "Text Base"
661 help
Jesse Taube6ab77bb2023-08-24 21:59:48 -0400662 The address in memory that U-Boot will be copied and executed from
663 initially.
664
665config HAVE_SYS_UBOOT_START
666 bool "Use custom U-Boot Start"
667 depends on HAVE_TEXT_BASE
668 help
669 By default, the address in memory that U-Boot will be copied from
670 (TEXT_BASE) and the entry point are the same. Select this to start the
671 execution of U-Boot from a different address.
672 This may be required if a header or vector table needs to be copied
673 but not executed.
674
675config SYS_UBOOT_START
676 hex
677 depends on HAVE_TEXT_BASE
678 default TEXT_BASE
679 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
680 help
681 If TEXT_BASE differs from the start of execution, this sets the
682 address in memory that U-Boot will start execution from initially.
Simon Glass064a57d2023-09-14 10:55:54 -0600683
684config HAVE_SYS_MONITOR_BASE
685 bool
686 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
687 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
688 depends on !EFI_APP
689 default y
690
691config SYS_MONITOR_BASE
692 depends on HAVE_SYS_MONITOR_BASE
693 hex "Physical start address of boot monitor code"
694 default TEXT_BASE
695 help
696 The physical start address of boot monitor code (which is the same as
697 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
698 when booting from flash.
699
700config SPL_SYS_MONITOR_BASE
701 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
702 hex "Physical start address of SPL monitor code"
703 default SPL_TEXT_BASE
704
705config TPL_SYS_MONITOR_BASE
706 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
707 hex "Physical start address of TPL monitor code"
708
709config DYNAMIC_SYS_CLK_FREQ
710 bool "Determine CPU clock frequency at run-time"
711 help
712 Implement a get_board_sys_clk function that will determine the CPU
713 clock frequency at run time, rather than define it statically.
714
715config SYS_CLK_FREQ
716 depends on !DYNAMIC_SYS_CLK_FREQ
717 int "CPU clock frequency"
718 default 125000000 if ARCH_LS1012A
719 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
720 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
721 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
722 default 66660000 if ARCH_T2080
723 default 33333333 if RCAR_GEN3
724 default 24000000 if ARCH_EXYNOS
725 default 20000000 if RCAR_GEN2
726 default 0
727 help
728 A static value for the CPU frequency. Note that if not required
729 for a given SoC, this can be left at 0.
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900730
Greg Malysabcdd0232024-03-19 22:16:07 -0400731config HAS_LDR
732 bool
733 help
734 Enables building .ldr targets for U-Boot and SPL. This does not
735 automatically build any additional targets with make or buildman.
736
737config LDR_CPU
738 string "CPU name to be passed to LDR utility."
739 depends on HAS_LDR
740 help
741 Set the CPU name for the -T parameter in the LDR utility. This is
742 generally used on processors from Analog Devices, but may be also
743 be useful for other vendors.
744
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100745source "api/Kconfig"
746
Simon Glassd761eea2023-09-14 10:55:40 -0600747endmenu # General setup
748
Simon Glass19a91f22021-10-14 12:47:54 -0600749source "boot/Kconfig"
750
Masahiro Yamadaed363232014-09-16 16:32:58 +0900751source "common/Kconfig"
752
Simon Glass72a8cf82016-01-17 20:53:51 -0700753source "cmd/Kconfig"
754
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100755source "disk/Kconfig"
756
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900757source "dts/Kconfig"
758
Simon Glass0649cd02017-08-03 12:21:49 -0600759source "env/Kconfig"
760
Jerome Forissier8cb33032024-10-16 12:03:59 +0200761menu Networking
762
763choice
764 prompt "Networking stack"
765 default NET
766
767config NO_NET
768 bool "No networking support"
769
770config NET
771 bool "Legacy U-Boot networking stack"
772 imply NETDEVICES
773
774config NET_LWIP
775 bool "Use lwIP for networking stack"
776 imply NETDEVICES
777 help
778 Include networking support based on the lwIP (lightweight IP)
779 TCP/IP stack (https://nongnu.org/lwip). This is a replacement for
780 the default U-Boot network stack and applications located in net/
781 and enabled via CONFIG_NET as well as other pieces of code that
782 depend on CONFIG_NET (such as cmd/net.c enabled via CONFIG_CMD_NET).
783 Therefore the two symbols CONFIG_NET and CONFIG_NET_LWIP are mutually
784 exclusive.
785
786endchoice
787
Masahiro Yamadaed363232014-09-16 16:32:58 +0900788source "net/Kconfig"
789
Jerome Forissier8cb33032024-10-16 12:03:59 +0200790endmenu
791
Masahiro Yamadaed363232014-09-16 16:32:58 +0900792source "drivers/Kconfig"
793
794source "fs/Kconfig"
795
796source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700797
798source "test/Kconfig"
Simon Glass1fa057b2020-09-10 20:21:27 -0600799
800source "tools/Kconfig"