blob: 45656e90b917b619f7c3869273b58b6534a74bf4 [file] [log] [blame]
Masahiro Yamada51631252014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
Robert P. J. Day59d7c342016-04-16 05:53:07 -04003# see the file Documentation/kbuild/kconfig-language.txt in the
4# 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"
Amit Singh Tomard5c819b2020-04-19 19:28:34 +0530211 default 1 if ARCH_SUNXI || ARCH_OWL
Ramon Fried999a7722018-08-14 01:00:04 +0300212 default 4
213 help
214 This defines the number of DRAM banks.
215
Derald D. Woods405fc832018-01-22 17:17:10 -0600216config SYS_BOOT_GET_CMDLINE
217 bool "Enable kernel command line setup"
218 help
219 Enables allocating and saving kernel cmdline in space between
220 "bootm_low" and "bootm_low" + BOOTMAPSZ.
221
Tom Rini68894122022-05-12 10:02:06 -0400222config SYS_BARGSIZE
223 int "Size of kernel command line buffer in bytes"
224 depends on SYS_BOOT_GET_CMDLINE
225 default 512
226 help
227 Buffer size for Boot Arguments which are passed to the application
228 (usually a Linux kernel) when it is booted
229
Derald D. Woods405fc832018-01-22 17:17:10 -0600230config SYS_BOOT_GET_KBD
231 bool "Enable kernel board information setup"
232 help
233 Enables allocating and saving a kernel copy of the bd_info in
234 space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
235
Tom Rinieaf6ea62022-05-25 12:16:03 -0400236config HAS_CUSTOM_SYS_INIT_SP_ADDR
237 bool "Use a custom location for the initial stack pointer address"
238 depends on ARC || (ARM && !INIT_SP_RELATIVE) || MIPS || PPC || RISCV
Paul Kocialkowski7cf8ded2024-07-28 22:24:53 +0200239 default y if OMAP34XX || AM33XX
Tom Rinieaf6ea62022-05-25 12:16:03 -0400240 default y if TFABOOT
241 help
242 Typically, we use an initial stack pointer address that is calculated
Tom Rini65cc0e22022-11-16 13:10:41 -0500243 by taking the statically defined CFG_SYS_INIT_RAM_ADDR, adding the
244 statically defined CFG_SYS_INIT_RAM_SIZE and then subtracting the
Tom Rinieaf6ea62022-05-25 12:16:03 -0400245 build-time constant of GENERATED_GBL_DATA_SIZE. On MIPS a different
246 but statica calculation is performed. However, some platforms will
247 take a different approach. Say Y here to define the address statically
248 instead.
249
250config CUSTOM_SYS_INIT_SP_ADDR
251 hex "Static location for the initial stack pointer"
252 depends on HAS_CUSTOM_SYS_INIT_SP_ADDR
Paul Kocialkowskib979fd52024-07-28 22:24:51 +0200253 default 0x4020ff00 if OMAP34XX
Paul Kocialkowski7cf8ded2024-07-28 22:24:53 +0200254 default 0x4030ff00 if AM33XX
Simon Glass98463902022-10-20 18:22:39 -0600255 default TEXT_BASE if TFABOOT
Tom Rinieaf6ea62022-05-25 12:16:03 -0400256
Simon Glassb724bd72015-02-11 16:32:59 -0700257config SYS_MALLOC_F
258 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +0900259 default y if DM
Simon Glass15a5c722018-12-03 04:37:17 -0700260
Simon Glassb724bd72015-02-11 16:32:59 -0700261 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400262 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -0700263 we can provide a small malloc() pool if needed. Driver model in
264 particular needs this to operate, so that it can allocate the
265 initial serial device and any others that are needed.
266
267config SYS_MALLOC_F_LEN
268 hex "Size of malloc() pool before relocation"
269 depends on SYS_MALLOC_F
Tom Rinie0568922022-04-07 12:33:23 -0400270 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlman41098d22024-03-02 19:16:12 +0000271 ROCKCHIP_RV1108
Tom Rinie0568922022-04-07 12:33:23 -0400272 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
273 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
274 ROCKCHIP_RK322X || X86
Tom Rini4448d0c2022-04-07 12:33:24 -0400275 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rinie0568922022-04-07 12:33:23 -0400276 default 0x1800 if ARCH_TEGRA
277 default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
278 ROCKCHIP_RK3399
279 default 0x8000 if RCAR_GEN3
Peng Fan19ed25b2022-09-15 09:38:18 +0800280 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rinie0568922022-04-07 12:33:23 -0400281 default 0x2000
Simon Glassb724bd72015-02-11 16:32:59 -0700282 help
Simon Glass5bcacd12023-09-26 08:14:29 -0600283 Size of the malloc() pool for use before relocation. If
284 this is defined, then a very simple malloc() implementation
285 will become available before relocation. The address is just
286 below the global data, and the stack is moved down to make
287 space.
288
289 This feature allocates regions with increasing addresses
290 within the region. calloc() is supported, but realloc()
291 is not available. free() is supported but does nothing.
292 The memory will be freed (or in fact just forgotten) when
293 U-Boot relocates itself.
Simon Glassb724bd72015-02-11 16:32:59 -0700294
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530295config SYS_MALLOC_LEN
296 hex "Define memory for Dynamic allocation"
Tom Rini46d940c2022-04-14 11:34:47 -0400297 default 0x4000000 if SANDBOX
Tom Rini7cfbba32021-08-28 21:34:49 -0400298 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rini7cfbba32021-08-28 21:34:49 -0400299 default 0x200000 if ARCH_BMIPS || X86
Andre Przywara1bf98bd2022-07-03 00:47:20 +0100300 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
301 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
302 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rini7cfbba32021-08-28 21:34:49 -0400303 default 0x400000
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530304 help
305 This defines memory to be allocated for Dynamic allocation
306 TODO: Use for other architectures
307
Simon Glassfd8497d2023-09-26 08:14:24 -0600308config SPL_SYS_MALLOC_F
309 bool "Enable malloc() pool in SPL"
310 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
311 default y
312 help
313 In SPL memory is very limited on many platforms. Still,
314 we can provide a small malloc() pool if needed. Driver model in
315 particular needs this to operate, so that it can allocate the
316 initial serial device and any others that are needed.
317
Andy Yanf1896c42017-07-24 17:43:34 +0800318config SPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700319 hex "Size of malloc() pool in SPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600320 depends on SPL_SYS_MALLOC_F
Marek Vasut56023302018-10-03 12:44:13 +0200321 default 0x2800 if RCAR_GEN3
Peng Fan19ed25b2022-09-15 09:38:18 +0800322 default 0x2000 if IMX8MQ
Michal Simek14aa2102018-07-24 14:47:43 +0200323 default SYS_MALLOC_F_LEN
324 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600325 Sets the size of the malloc() pool in SPL. This is used for
326 driver model and other features, which must allocate memory for
327 data structures.
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200328
Simon Glass82e26e02023-09-26 08:14:16 -0600329 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glass14261742021-01-21 13:57:06 -0700330 malloc() region in SDRAM once it is inited.
331
Simon Glassfd8497d2023-09-26 08:14:24 -0600332config TPL_SYS_MALLOC_F
John Keepinge319ef02023-11-14 11:30:17 +0000333 bool "Enable malloc() pool in TPL"
Simon Glassfd8497d2023-09-26 08:14:24 -0600334 depends on SYS_MALLOC_F && TPL
335 default y if SPL_SYS_MALLOC_F
336 help
337 In TPL memory is very limited on many platforms. Still,
338 we can provide a small malloc() pool if needed. Driver model in
339 particular needs this to operate, so that it can allocate the
340 initial serial device and any others that are needed.
341
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200342config TPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700343 hex "Size of malloc() pool in TPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600344 depends on TPL_SYS_MALLOC_F
Simon Glass14261742021-01-21 13:57:06 -0700345 default SPL_SYS_MALLOC_F_LEN
Michal Simek14aa2102018-07-24 14:47:43 +0200346 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600347 Sets the size of the malloc() pool in TPL. This is used for
348 driver model and other features, which must allocate memory for
349 data structures.
Andy Yanf1896c42017-07-24 17:43:34 +0800350
Sean Andersonfba08822022-03-23 14:04:48 -0400351config VALGRIND
352 bool "Inform valgrind about memory allocations"
Sean Anderson1e5514f2022-05-27 10:03:00 -0400353 depends on !RISCV
Sean Andersonfba08822022-03-23 14:04:48 -0400354 help
355 Valgrind is an instrumentation framework for building dynamic analysis
356 tools. In particular, it may be used to detect memory management bugs
357 in U-Boot. It relies on knowing when heap blocks are allocated in
358 order to give accurate results. This happens automatically for
359 standard allocator functions provided by the host OS. However, this
360 doesn't automatically happen for U-Boot's malloc implementation.
361
362 Enable this option to annotate U-Boot's malloc implementation so that
363 it can be handled accurately by Valgrind. If you aren't planning on
364 using valgrind to debug U-Boot, say 'n'.
365
Simon Glassfd8497d2023-09-26 08:14:24 -0600366config VPL_SYS_MALLOC_F
367 bool "Enable malloc() pool in VPL"
368 depends on SYS_MALLOC_F && VPL
369 default y if SPL_SYS_MALLOC_F
370 help
371 In VPL memory is very limited on many platforms. Still,
372 we can provide a small malloc() pool if needed. Driver model in
373 particular needs this to operate, so that it can allocate the
374 initial serial device and any others that are needed.
375
Simon Glass747093d2022-04-30 00:56:53 -0600376config VPL_SYS_MALLOC_F_LEN
377 hex "Size of malloc() pool in VPL before relocation"
Simon Glass3d6d5072023-09-26 08:14:27 -0600378 depends on VPL_SYS_MALLOC_F
379 default SPL_SYS_MALLOC_F_LEN
Simon Glass747093d2022-04-30 00:56:53 -0600380 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600381 Sets the size of the malloc() pool in VPL. This is used for
382 driver model and other features, which must allocate memory for
383 data structures.
Simon Glass747093d2022-04-30 00:56:53 -0600384
Tom Rini1bf09792014-11-14 09:34:29 +0100385menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100386 bool "Configure standard U-Boot features (expert users)"
387 default y
388 help
389 This option allows certain base U-Boot options and settings
390 to be disabled or tweaked. This is for specialized
391 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400392 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100393
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100394if EXPERT
395 config SYS_MALLOC_CLEAR_ON_INIT
396 bool "Init with zeros the memory reserved for malloc (slow)"
397 default y
398 help
399 This setting is enabled by default. The reserved malloc
400 memory is initialized with zeros, so first malloc calls
401 will return the pointer to the zeroed memory. But this
402 slows the boot time.
403
404 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
405 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
406 Then the boot time can be significantly reduced.
407 Warning:
408 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400409 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600410
Shengyu Qudd1eb1a2023-08-25 00:25:18 +0800411config SPL_SYS_MALLOC_CLEAR_ON_INIT
412 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
413 depends on SPL
414 default SYS_MALLOC_CLEAR_ON_INIT
415 help
416 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
417 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
418 that must have particular memory regions zero'ed before first use.
419 If SYS_SPL_MALLOC_START is configured to be in such region, this
420 option should be enabled.
421
Marek Bykowski9297e362020-04-29 18:23:07 +0200422config SYS_MALLOC_DEFAULT_TO_INIT
423 bool "Default malloc to init while reserving the memory for it"
Marek Bykowski9297e362020-04-29 18:23:07 +0200424 help
425 It may happen that one needs to move the dynamic allocation
426 from one to another memory range, eg. when moving the malloc
427 from the limited static to a potentially large dynamic (DDR)
428 memory.
429
430 If so then on top of setting the updated memory aside one
431 needs to bring the malloc init.
432
433 If such a scenario is sought choose yes.
434
Simon Glass022885c2016-06-30 10:52:20 -0600435config TOOLS_DEBUG
436 bool "Enable debug information for tools"
437 help
438 Enable generation of debug information for tools such as mkimage.
439 This can be used for debugging purposes. With debug information
440 it is possible to set breakpoints on particular lines, single-step
441 debug through the source code, etc.
442
Robert P. J. Day266aa862017-01-02 16:32:13 -0500443endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900444
445config PHYS_64BIT
446 bool "64bit physical address support"
Johan Jonker53c50932023-03-13 01:33:23 +0100447 select FDT_64BIT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900448 help
449 Say Y here to support 64bit physical memory address.
450 This can be used not only for 64bit SoCs, but also for
Chris Packham3aeb7712019-01-13 22:13:19 +1300451 large physical address extension on 32bit SoCs.
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900452
Johan Jonker53c50932023-03-13 01:33:23 +0100453config FDT_64BIT
454 bool "64bit fdt address support"
455 help
456 Say Y here to support 64bit fdt addresses.
457 This can be used not only for 64bit SoCs, but also
458 for large address extensions on 32bit SoCs.
459
Simon Glassbcd4e6f2020-07-19 13:55:52 -0600460config HAS_ROM
461 bool
462 select BINMAN
463 help
464 Enables building of a u-boot.rom target. This collects U-Boot and
465 any necessary binary blobs.
466
Stefan Roese9ea6f712019-04-03 15:24:50 +0200467config SPL_IMAGE
468 string "SPL image used in the combined SPL+U-Boot image"
469 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
470 default "spl/u-boot-spl.bin"
Adam Ford05705562019-08-13 14:32:30 -0500471 depends on SPL
Stefan Roese9ea6f712019-04-03 15:24:50 +0200472 help
473 Select the SPL build target that shall be generated by the SPL
474 build process (default spl/u-boot-spl.bin). This image will be
475 used to generate a combined image with SPL and main U-Boot
476 proper as one single image.
477
Alper Nebi Yasaka8c281d2022-01-29 18:25:30 +0300478config REMAKE_ELF
479 bool "Recreate an ELF image from raw U-Boot binary"
480 help
481 Enable this to recreate an ELF image (u-boot.elf) from the raw
482 U-Boot binary (u-boot.bin), which may already have been statically
483 relocated and may already have a device-tree appended to it.
484
Jagan Tekidc146ca2019-01-18 12:52:49 +0530485config BUILD_TARGET
486 string "Build target special images"
Hai Pham5a3b0742023-02-28 22:22:03 +0100487 default "u-boot-elf.srec" if RCAR_64
Marek Vasut66e49f02023-02-28 07:22:21 +0100488 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
489 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
490 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
491 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreene3ada912019-03-20 13:15:21 -0700492 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
493 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glassa32dd072020-07-19 13:56:12 -0600494 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland25bc7bf2023-01-22 11:23:51 -0600495 RISCV || ARCH_ZYNQMP)
Pali RohĂĄrf0b1a1e2022-12-29 02:39:19 +0100496 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekidc146ca2019-01-18 12:52:49 +0530497 help
498 Some SoCs need special image types (e.g. U-Boot binary
499 with a special header) as build targets. By defining
500 CONFIG_BUILD_TARGET in the SoC / board header, this
501 special image will be automatically built upon calling
502 make / buildman.
503
Tom Rini95b64172022-03-30 18:07:11 -0400504config HAS_BOARD_SIZE_LIMIT
505 bool "Define a maximum size for the U-Boot image"
Marek Vasut1c987e62024-02-11 18:34:29 +0100506 default y if RCAR_32 || RCAR_64
Tom Rini95b64172022-03-30 18:07:11 -0400507 help
508 In some cases, we need to enforce a hard limit on how big the U-Boot
509 image itself can be.
510
511config BOARD_SIZE_LIMIT
512 int "Maximum size of the U-Boot image in bytes"
Marek Vasut1c987e62024-02-11 18:34:29 +0100513 default 524288 if RCAR_32
Hai Pham5a3b0742023-02-28 22:22:03 +0100514 default 1048576 if RCAR_64
Tom Rini95b64172022-03-30 18:07:11 -0400515 depends on HAS_BOARD_SIZE_LIMIT
516 help
517 Maximum size of the U-Boot image. When defined, the build system
518 checks that the actual size does not exceed it. This does not
519 include SPL nor TPL, on platforms that use that functionality, they
520 have a separate option to restict size.
521
Tom Rinid760a5e2019-06-02 08:57:32 -0400522config SYS_CUSTOM_LDSCRIPT
523 bool "Use a custom location for the U-Boot linker script"
524 help
525 Normally when linking U-Boot we will look in the board directory,
526 the CPU directory and finally the "cpu" directory of the architecture
527 for the ile "u-boot.lds" and use that as our linker. However, in
528 some cases we need to provide a different linker script. To do so,
529 enable this option and then provide the location under
530 CONFIG_SYS_LDSCRIPT.
531
532config SYS_LDSCRIPT
533 depends on SYS_CUSTOM_LDSCRIPT
534 string "Custom ldscript location"
535 help
536 Path within the source tree to the linker script to use for the
537 main U-Boot binary.
538
Tom Rini49c8ef02021-08-23 10:25:31 -0400539config SYS_LOAD_ADDR
540 hex "Address in memory to use by default"
541 default 0x01000000 if ARCH_SOCFPGA
542 default 0x02000000 if PPC || X86
Icenowy Zhengb6ffd582022-01-29 10:23:09 -0500543 default 0x81000000 if MACH_SUNIV
Tom Rini49c8ef02021-08-23 10:25:31 -0400544 default 0x22000000 if MACH_SUN9I
Icenowy Zhengb6ffd582022-01-29 10:23:09 -0500545 default 0x42000000 if ARCH_SUNXI
Tom Rini49c8ef02021-08-23 10:25:31 -0400546 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
547 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
548 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
549 default 0x80800000 if ARCH_MX7
550 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
551 help
552 Address in memory to use as the default safe load address.
553
Simon Goldschmidt93db2b82019-10-22 21:29:46 +0200554config ERR_PTR_OFFSET
555 hex
556 default 0x0
557 help
558 Some U-Boot pointers have redundant information, so we can use a
559 scheme where we can return either an error code or a pointer with the
560 same return value. The default implementation just casts the pointer
561 to a number, however, this may fail on platforms where the end of the
562 address range is used for valid pointers (e.g. 0xffffff00 is a valid
563 heap pointer in socfpga SPL).
564 For such platforms, this value provides an upper range of those error
565 pointer values - up to 'MAX_ERRNO' bytes below this value must be
566 unused/invalid addresses.
567
Michal Simeke14ba8a2020-03-30 13:58:59 +0200568config PLATFORM_ELFENTRY
569 string
570 default "__start" if MIPS
571 default "_start"
572
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200573config STACK_SIZE
574 hex "Define max stack size that can be used by U-Boot"
Michal Simekf6aebdf2022-09-19 14:21:02 +0200575 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200576 default 0x200000 if MICROBLAZE
577 default 0x1000000
578 help
579 Define Max stack size that can be used by U-Boot. This value is used
580 by the UEFI sub-system. On some boards initrd_high is calculated as
581 base stack pointer minus this stack size.
582
Tom Rini24c904f2022-04-06 10:33:32 -0400583config SYS_MEM_TOP_HIDE
584 hex "Exclude some memory from U-Boot / OS information"
585 default 0x0
586 help
587 If set, this specified memory area will get subtracted from the top
588 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
589 gd->ram_size the OS / next stage should gets passed the now
590 "corrected" memory size and won't touch it either.
591 WARNING: Please make sure that this value is a multiple of the OS
592 page size.
593
Ovidiu Panait7be19312020-07-24 14:12:09 +0300594config SYS_HAS_SRAM
595 bool
596 default y if TARGET_PIC32MZDASK
597 default y if TARGET_DEVKIT8000
598 default y if TARGET_TRICORDER
Ovidiu Panait7be19312020-07-24 14:12:09 +0300599 help
600 Enable this to allow support for the on board SRAM.
601 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
602 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
603
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300604config SYS_SRAM_BASE
605 hex
606 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait9a17bfb2020-07-24 14:12:12 +0300607 default 0x40200000 if TARGET_DEVKIT8000
608 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300609 default 0x0
610
Ovidiu Panait9f63f022020-07-24 14:12:11 +0300611config SYS_SRAM_SIZE
612 hex
613 default 0x00080000 if TARGET_PIC32MZDASK
614 default 0x10000 if TARGET_DEVKIT8000
615 default 0x10000 if TARGET_TRICORDER
616 default 0x0
617
Tom Rini08574ed2022-10-28 20:27:07 -0400618config SYS_MONITOR_LEN
619 int "Maximum size in bytes reserved for U-Boot in memory"
620 default 1048576 if X86
Andre Przywarab072aef2022-11-19 16:10:59 +0000621 default 786432 if ARCH_SUNXI
Tom Rini08574ed2022-10-28 20:27:07 -0400622 default 0
623 help
624 Size of memory reserved for monitor code, used to determine
625 _at_compile_time_ (!) if the environment is embedded within the
626 U-Boot image, or in a separate flash sector, among other uses where
627 we need to set a maximum size of the U-Boot binary itself that will
628 be loaded.
629
Ashok Reddy Soma480245c2022-01-17 10:16:50 +0100630config MP
631 bool "Support for multiprocessor"
632 help
633 This provides an option to bringup different processors
634 in multiprocessor cases.
635
Simon Glass064a57d2023-09-14 10:55:54 -0600636config HAVE_TEXT_BASE
637 bool
638 depends on !NIOS2 && !XTENSA
639 depends on !EFI_APP
640 default y
641
642config TEXT_BASE
643 depends on HAVE_TEXT_BASE
644 default 0x0 if POSITION_INDEPENDENT
645 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
646 default 0x81700000 if MACH_SUNIV
647 default 0x2a000000 if MACH_SUN9I
648 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
649 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
650 hex "Text Base"
651 help
Jesse Taube6ab77bb2023-08-24 21:59:48 -0400652 The address in memory that U-Boot will be copied and executed from
653 initially.
654
655config HAVE_SYS_UBOOT_START
656 bool "Use custom U-Boot Start"
657 depends on HAVE_TEXT_BASE
658 help
659 By default, the address in memory that U-Boot will be copied from
660 (TEXT_BASE) and the entry point are the same. Select this to start the
661 execution of U-Boot from a different address.
662 This may be required if a header or vector table needs to be copied
663 but not executed.
664
665config SYS_UBOOT_START
666 hex
667 depends on HAVE_TEXT_BASE
668 default TEXT_BASE
669 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
670 help
671 If TEXT_BASE differs from the start of execution, this sets the
672 address in memory that U-Boot will start execution from initially.
Simon Glass064a57d2023-09-14 10:55:54 -0600673
674config HAVE_SYS_MONITOR_BASE
675 bool
676 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
677 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
678 depends on !EFI_APP
679 default y
680
681config SYS_MONITOR_BASE
682 depends on HAVE_SYS_MONITOR_BASE
683 hex "Physical start address of boot monitor code"
684 default TEXT_BASE
685 help
686 The physical start address of boot monitor code (which is the same as
687 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
688 when booting from flash.
689
690config SPL_SYS_MONITOR_BASE
691 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
692 hex "Physical start address of SPL monitor code"
693 default SPL_TEXT_BASE
694
695config TPL_SYS_MONITOR_BASE
696 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
697 hex "Physical start address of TPL monitor code"
698
699config DYNAMIC_SYS_CLK_FREQ
700 bool "Determine CPU clock frequency at run-time"
701 help
702 Implement a get_board_sys_clk function that will determine the CPU
703 clock frequency at run time, rather than define it statically.
704
705config SYS_CLK_FREQ
706 depends on !DYNAMIC_SYS_CLK_FREQ
707 int "CPU clock frequency"
708 default 125000000 if ARCH_LS1012A
709 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
710 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
711 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
712 default 66660000 if ARCH_T2080
713 default 33333333 if RCAR_GEN3
714 default 24000000 if ARCH_EXYNOS
715 default 20000000 if RCAR_GEN2
716 default 0
717 help
718 A static value for the CPU frequency. Note that if not required
719 for a given SoC, this can be left at 0.
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900720
Greg Malysabcdd0232024-03-19 22:16:07 -0400721config HAS_LDR
722 bool
723 help
724 Enables building .ldr targets for U-Boot and SPL. This does not
725 automatically build any additional targets with make or buildman.
726
727config LDR_CPU
728 string "CPU name to be passed to LDR utility."
729 depends on HAS_LDR
730 help
731 Set the CPU name for the -T parameter in the LDR utility. This is
732 generally used on processors from Analog Devices, but may be also
733 be useful for other vendors.
734
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100735source "api/Kconfig"
736
Simon Glassd761eea2023-09-14 10:55:40 -0600737endmenu # General setup
738
Simon Glass19a91f22021-10-14 12:47:54 -0600739source "boot/Kconfig"
740
Masahiro Yamadaed363232014-09-16 16:32:58 +0900741source "common/Kconfig"
742
Simon Glass72a8cf82016-01-17 20:53:51 -0700743source "cmd/Kconfig"
744
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100745source "disk/Kconfig"
746
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900747source "dts/Kconfig"
748
Simon Glass0649cd02017-08-03 12:21:49 -0600749source "env/Kconfig"
750
Masahiro Yamadaed363232014-09-16 16:32:58 +0900751source "net/Kconfig"
752
753source "drivers/Kconfig"
754
755source "fs/Kconfig"
756
757source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700758
759source "test/Kconfig"
Simon Glass1fa057b2020-09-10 20:21:27 -0600760
761source "tools/Kconfig"