blob: 82df59f176ec5d73f851558d1d8a50d7838568c9 [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
239 default y if TFABOOT
240 help
241 Typically, we use an initial stack pointer address that is calculated
Tom Rini65cc0e22022-11-16 13:10:41 -0500242 by taking the statically defined CFG_SYS_INIT_RAM_ADDR, adding the
243 statically defined CFG_SYS_INIT_RAM_SIZE and then subtracting the
Tom Rinieaf6ea62022-05-25 12:16:03 -0400244 build-time constant of GENERATED_GBL_DATA_SIZE. On MIPS a different
245 but statica calculation is performed. However, some platforms will
246 take a different approach. Say Y here to define the address statically
247 instead.
248
249config CUSTOM_SYS_INIT_SP_ADDR
250 hex "Static location for the initial stack pointer"
251 depends on HAS_CUSTOM_SYS_INIT_SP_ADDR
Simon Glass98463902022-10-20 18:22:39 -0600252 default TEXT_BASE if TFABOOT
Tom Rinieaf6ea62022-05-25 12:16:03 -0400253
Simon Glassb724bd72015-02-11 16:32:59 -0700254config SYS_MALLOC_F
255 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +0900256 default y if DM
Simon Glass15a5c722018-12-03 04:37:17 -0700257
Simon Glassb724bd72015-02-11 16:32:59 -0700258 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400259 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -0700260 we can provide a small malloc() pool if needed. Driver model in
261 particular needs this to operate, so that it can allocate the
262 initial serial device and any others that are needed.
263
264config SYS_MALLOC_F_LEN
265 hex "Size of malloc() pool before relocation"
266 depends on SYS_MALLOC_F
Tom Rinie0568922022-04-07 12:33:23 -0400267 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlman41098d22024-03-02 19:16:12 +0000268 ROCKCHIP_RV1108
Tom Rinie0568922022-04-07 12:33:23 -0400269 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
270 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
271 ROCKCHIP_RK322X || X86
Tom Rini4448d0c2022-04-07 12:33:24 -0400272 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rinie0568922022-04-07 12:33:23 -0400273 default 0x1800 if ARCH_TEGRA
274 default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
275 ROCKCHIP_RK3399
276 default 0x8000 if RCAR_GEN3
Peng Fan19ed25b2022-09-15 09:38:18 +0800277 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rinie0568922022-04-07 12:33:23 -0400278 default 0x2000
Simon Glassb724bd72015-02-11 16:32:59 -0700279 help
Simon Glass5bcacd12023-09-26 08:14:29 -0600280 Size of the malloc() pool for use before relocation. If
281 this is defined, then a very simple malloc() implementation
282 will become available before relocation. The address is just
283 below the global data, and the stack is moved down to make
284 space.
285
286 This feature allocates regions with increasing addresses
287 within the region. calloc() is supported, but realloc()
288 is not available. free() is supported but does nothing.
289 The memory will be freed (or in fact just forgotten) when
290 U-Boot relocates itself.
Simon Glassb724bd72015-02-11 16:32:59 -0700291
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530292config SYS_MALLOC_LEN
293 hex "Define memory for Dynamic allocation"
Tom Rini46d940c2022-04-14 11:34:47 -0400294 default 0x4000000 if SANDBOX
Tom Rini7cfbba32021-08-28 21:34:49 -0400295 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rini7cfbba32021-08-28 21:34:49 -0400296 default 0x200000 if ARCH_BMIPS || X86
Andre Przywara1bf98bd2022-07-03 00:47:20 +0100297 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
298 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
299 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rini7cfbba32021-08-28 21:34:49 -0400300 default 0x400000
Siva Durga Prasad Paladugu01aa5b82018-07-20 15:11:38 +0530301 help
302 This defines memory to be allocated for Dynamic allocation
303 TODO: Use for other architectures
304
Simon Glassfd8497d2023-09-26 08:14:24 -0600305config SPL_SYS_MALLOC_F
306 bool "Enable malloc() pool in SPL"
307 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
308 default y
309 help
310 In SPL memory is very limited on many platforms. Still,
311 we can provide a small malloc() pool if needed. Driver model in
312 particular needs this to operate, so that it can allocate the
313 initial serial device and any others that are needed.
314
Andy Yanf1896c42017-07-24 17:43:34 +0800315config SPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700316 hex "Size of malloc() pool in SPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600317 depends on SPL_SYS_MALLOC_F
Marek Vasut56023302018-10-03 12:44:13 +0200318 default 0x2800 if RCAR_GEN3
Peng Fan19ed25b2022-09-15 09:38:18 +0800319 default 0x2000 if IMX8MQ
Michal Simek14aa2102018-07-24 14:47:43 +0200320 default SYS_MALLOC_F_LEN
321 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600322 Sets the size of the malloc() pool in SPL. This is used for
323 driver model and other features, which must allocate memory for
324 data structures.
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200325
Simon Glass82e26e02023-09-26 08:14:16 -0600326 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glass14261742021-01-21 13:57:06 -0700327 malloc() region in SDRAM once it is inited.
328
Simon Glassfd8497d2023-09-26 08:14:24 -0600329config TPL_SYS_MALLOC_F
John Keepinge319ef02023-11-14 11:30:17 +0000330 bool "Enable malloc() pool in TPL"
Simon Glassfd8497d2023-09-26 08:14:24 -0600331 depends on SYS_MALLOC_F && TPL
332 default y if SPL_SYS_MALLOC_F
333 help
334 In TPL memory is very limited on many platforms. Still,
335 we can provide a small malloc() pool if needed. Driver model in
336 particular needs this to operate, so that it can allocate the
337 initial serial device and any others that are needed.
338
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200339config TPL_SYS_MALLOC_F_LEN
Simon Glass14261742021-01-21 13:57:06 -0700340 hex "Size of malloc() pool in TPL"
Simon Glass3d6d5072023-09-26 08:14:27 -0600341 depends on TPL_SYS_MALLOC_F
Simon Glass14261742021-01-21 13:57:06 -0700342 default SPL_SYS_MALLOC_F_LEN
Michal Simek14aa2102018-07-24 14:47:43 +0200343 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600344 Sets the size of the malloc() pool in TPL. This is used for
345 driver model and other features, which must allocate memory for
346 data structures.
Andy Yanf1896c42017-07-24 17:43:34 +0800347
Sean Andersonfba08822022-03-23 14:04:48 -0400348config VALGRIND
349 bool "Inform valgrind about memory allocations"
Sean Anderson1e5514f2022-05-27 10:03:00 -0400350 depends on !RISCV
Sean Andersonfba08822022-03-23 14:04:48 -0400351 help
352 Valgrind is an instrumentation framework for building dynamic analysis
353 tools. In particular, it may be used to detect memory management bugs
354 in U-Boot. It relies on knowing when heap blocks are allocated in
355 order to give accurate results. This happens automatically for
356 standard allocator functions provided by the host OS. However, this
357 doesn't automatically happen for U-Boot's malloc implementation.
358
359 Enable this option to annotate U-Boot's malloc implementation so that
360 it can be handled accurately by Valgrind. If you aren't planning on
361 using valgrind to debug U-Boot, say 'n'.
362
Simon Glassfd8497d2023-09-26 08:14:24 -0600363config VPL_SYS_MALLOC_F
364 bool "Enable malloc() pool in VPL"
365 depends on SYS_MALLOC_F && VPL
366 default y if SPL_SYS_MALLOC_F
367 help
368 In VPL memory is very limited on many platforms. Still,
369 we can provide a small malloc() pool if needed. Driver model in
370 particular needs this to operate, so that it can allocate the
371 initial serial device and any others that are needed.
372
Simon Glass747093d2022-04-30 00:56:53 -0600373config VPL_SYS_MALLOC_F_LEN
374 hex "Size of malloc() pool in VPL before relocation"
Simon Glass3d6d5072023-09-26 08:14:27 -0600375 depends on VPL_SYS_MALLOC_F
376 default SPL_SYS_MALLOC_F_LEN
Simon Glass747093d2022-04-30 00:56:53 -0600377 help
Simon Glassfd8497d2023-09-26 08:14:24 -0600378 Sets the size of the malloc() pool in VPL. This is used for
379 driver model and other features, which must allocate memory for
380 data structures.
Simon Glass747093d2022-04-30 00:56:53 -0600381
Tom Rini1bf09792014-11-14 09:34:29 +0100382menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100383 bool "Configure standard U-Boot features (expert users)"
384 default y
385 help
386 This option allows certain base U-Boot options and settings
387 to be disabled or tweaked. This is for specialized
388 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400389 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100390
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100391if EXPERT
392 config SYS_MALLOC_CLEAR_ON_INIT
393 bool "Init with zeros the memory reserved for malloc (slow)"
394 default y
395 help
396 This setting is enabled by default. The reserved malloc
397 memory is initialized with zeros, so first malloc calls
398 will return the pointer to the zeroed memory. But this
399 slows the boot time.
400
401 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
402 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
403 Then the boot time can be significantly reduced.
404 Warning:
405 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400406 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600407
Shengyu Qudd1eb1a2023-08-25 00:25:18 +0800408config SPL_SYS_MALLOC_CLEAR_ON_INIT
409 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
410 depends on SPL
411 default SYS_MALLOC_CLEAR_ON_INIT
412 help
413 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
414 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
415 that must have particular memory regions zero'ed before first use.
416 If SYS_SPL_MALLOC_START is configured to be in such region, this
417 option should be enabled.
418
Marek Bykowski9297e362020-04-29 18:23:07 +0200419config SYS_MALLOC_DEFAULT_TO_INIT
420 bool "Default malloc to init while reserving the memory for it"
Marek Bykowski9297e362020-04-29 18:23:07 +0200421 help
422 It may happen that one needs to move the dynamic allocation
423 from one to another memory range, eg. when moving the malloc
424 from the limited static to a potentially large dynamic (DDR)
425 memory.
426
427 If so then on top of setting the updated memory aside one
428 needs to bring the malloc init.
429
430 If such a scenario is sought choose yes.
431
Simon Glass022885c2016-06-30 10:52:20 -0600432config TOOLS_DEBUG
433 bool "Enable debug information for tools"
434 help
435 Enable generation of debug information for tools such as mkimage.
436 This can be used for debugging purposes. With debug information
437 it is possible to set breakpoints on particular lines, single-step
438 debug through the source code, etc.
439
Robert P. J. Day266aa862017-01-02 16:32:13 -0500440endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900441
442config PHYS_64BIT
443 bool "64bit physical address support"
Johan Jonker53c50932023-03-13 01:33:23 +0100444 select FDT_64BIT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900445 help
446 Say Y here to support 64bit physical memory address.
447 This can be used not only for 64bit SoCs, but also for
Chris Packham3aeb7712019-01-13 22:13:19 +1300448 large physical address extension on 32bit SoCs.
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900449
Johan Jonker53c50932023-03-13 01:33:23 +0100450config FDT_64BIT
451 bool "64bit fdt address support"
452 help
453 Say Y here to support 64bit fdt addresses.
454 This can be used not only for 64bit SoCs, but also
455 for large address extensions on 32bit SoCs.
456
Simon Glassbcd4e6f2020-07-19 13:55:52 -0600457config HAS_ROM
458 bool
459 select BINMAN
460 help
461 Enables building of a u-boot.rom target. This collects U-Boot and
462 any necessary binary blobs.
463
Stefan Roese9ea6f712019-04-03 15:24:50 +0200464config SPL_IMAGE
465 string "SPL image used in the combined SPL+U-Boot image"
466 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
467 default "spl/u-boot-spl.bin"
Adam Ford05705562019-08-13 14:32:30 -0500468 depends on SPL
Stefan Roese9ea6f712019-04-03 15:24:50 +0200469 help
470 Select the SPL build target that shall be generated by the SPL
471 build process (default spl/u-boot-spl.bin). This image will be
472 used to generate a combined image with SPL and main U-Boot
473 proper as one single image.
474
Alper Nebi Yasaka8c281d2022-01-29 18:25:30 +0300475config REMAKE_ELF
476 bool "Recreate an ELF image from raw U-Boot binary"
477 help
478 Enable this to recreate an ELF image (u-boot.elf) from the raw
479 U-Boot binary (u-boot.bin), which may already have been statically
480 relocated and may already have a device-tree appended to it.
481
Jagan Tekidc146ca2019-01-18 12:52:49 +0530482config BUILD_TARGET
483 string "Build target special images"
Hai Pham5a3b0742023-02-28 22:22:03 +0100484 default "u-boot-elf.srec" if RCAR_64
Marek Vasut66e49f02023-02-28 07:22:21 +0100485 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
486 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
487 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
488 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreene3ada912019-03-20 13:15:21 -0700489 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
490 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glassa32dd072020-07-19 13:56:12 -0600491 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland25bc7bf2023-01-22 11:23:51 -0600492 RISCV || ARCH_ZYNQMP)
Pali RohĂĄrf0b1a1e2022-12-29 02:39:19 +0100493 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekidc146ca2019-01-18 12:52:49 +0530494 help
495 Some SoCs need special image types (e.g. U-Boot binary
496 with a special header) as build targets. By defining
497 CONFIG_BUILD_TARGET in the SoC / board header, this
498 special image will be automatically built upon calling
499 make / buildman.
500
Tom Rini95b64172022-03-30 18:07:11 -0400501config HAS_BOARD_SIZE_LIMIT
502 bool "Define a maximum size for the U-Boot image"
Marek Vasut1c987e62024-02-11 18:34:29 +0100503 default y if RCAR_32 || RCAR_64
Tom Rini95b64172022-03-30 18:07:11 -0400504 help
505 In some cases, we need to enforce a hard limit on how big the U-Boot
506 image itself can be.
507
508config BOARD_SIZE_LIMIT
509 int "Maximum size of the U-Boot image in bytes"
Marek Vasut1c987e62024-02-11 18:34:29 +0100510 default 524288 if RCAR_32
Hai Pham5a3b0742023-02-28 22:22:03 +0100511 default 1048576 if RCAR_64
Tom Rini95b64172022-03-30 18:07:11 -0400512 depends on HAS_BOARD_SIZE_LIMIT
513 help
514 Maximum size of the U-Boot image. When defined, the build system
515 checks that the actual size does not exceed it. This does not
516 include SPL nor TPL, on platforms that use that functionality, they
517 have a separate option to restict size.
518
Tom Rinid760a5e2019-06-02 08:57:32 -0400519config SYS_CUSTOM_LDSCRIPT
520 bool "Use a custom location for the U-Boot linker script"
521 help
522 Normally when linking U-Boot we will look in the board directory,
523 the CPU directory and finally the "cpu" directory of the architecture
524 for the ile "u-boot.lds" and use that as our linker. However, in
525 some cases we need to provide a different linker script. To do so,
526 enable this option and then provide the location under
527 CONFIG_SYS_LDSCRIPT.
528
529config SYS_LDSCRIPT
530 depends on SYS_CUSTOM_LDSCRIPT
531 string "Custom ldscript location"
532 help
533 Path within the source tree to the linker script to use for the
534 main U-Boot binary.
535
Tom Rini49c8ef02021-08-23 10:25:31 -0400536config SYS_LOAD_ADDR
537 hex "Address in memory to use by default"
538 default 0x01000000 if ARCH_SOCFPGA
539 default 0x02000000 if PPC || X86
Icenowy Zhengb6ffd582022-01-29 10:23:09 -0500540 default 0x81000000 if MACH_SUNIV
Tom Rini49c8ef02021-08-23 10:25:31 -0400541 default 0x22000000 if MACH_SUN9I
Icenowy Zhengb6ffd582022-01-29 10:23:09 -0500542 default 0x42000000 if ARCH_SUNXI
Tom Rini49c8ef02021-08-23 10:25:31 -0400543 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
544 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
545 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
546 default 0x80800000 if ARCH_MX7
547 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
548 help
549 Address in memory to use as the default safe load address.
550
Simon Goldschmidt93db2b82019-10-22 21:29:46 +0200551config ERR_PTR_OFFSET
552 hex
553 default 0x0
554 help
555 Some U-Boot pointers have redundant information, so we can use a
556 scheme where we can return either an error code or a pointer with the
557 same return value. The default implementation just casts the pointer
558 to a number, however, this may fail on platforms where the end of the
559 address range is used for valid pointers (e.g. 0xffffff00 is a valid
560 heap pointer in socfpga SPL).
561 For such platforms, this value provides an upper range of those error
562 pointer values - up to 'MAX_ERRNO' bytes below this value must be
563 unused/invalid addresses.
564
Michal Simeke14ba8a2020-03-30 13:58:59 +0200565config PLATFORM_ELFENTRY
566 string
567 default "__start" if MIPS
568 default "_start"
569
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200570config STACK_SIZE
571 hex "Define max stack size that can be used by U-Boot"
Michal Simekf6aebdf2022-09-19 14:21:02 +0200572 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardt74b869b2020-07-29 12:37:35 +0200573 default 0x200000 if MICROBLAZE
574 default 0x1000000
575 help
576 Define Max stack size that can be used by U-Boot. This value is used
577 by the UEFI sub-system. On some boards initrd_high is calculated as
578 base stack pointer minus this stack size.
579
Tom Rini24c904f2022-04-06 10:33:32 -0400580config SYS_MEM_TOP_HIDE
581 hex "Exclude some memory from U-Boot / OS information"
582 default 0x0
583 help
584 If set, this specified memory area will get subtracted from the top
585 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
586 gd->ram_size the OS / next stage should gets passed the now
587 "corrected" memory size and won't touch it either.
588 WARNING: Please make sure that this value is a multiple of the OS
589 page size.
590
Ovidiu Panait7be19312020-07-24 14:12:09 +0300591config SYS_HAS_SRAM
592 bool
593 default y if TARGET_PIC32MZDASK
594 default y if TARGET_DEVKIT8000
595 default y if TARGET_TRICORDER
Ovidiu Panait7be19312020-07-24 14:12:09 +0300596 help
597 Enable this to allow support for the on board SRAM.
598 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
599 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
600
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300601config SYS_SRAM_BASE
602 hex
603 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait9a17bfb2020-07-24 14:12:12 +0300604 default 0x40200000 if TARGET_DEVKIT8000
605 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panaitdd084b02020-07-24 14:12:10 +0300606 default 0x0
607
Ovidiu Panait9f63f022020-07-24 14:12:11 +0300608config SYS_SRAM_SIZE
609 hex
610 default 0x00080000 if TARGET_PIC32MZDASK
611 default 0x10000 if TARGET_DEVKIT8000
612 default 0x10000 if TARGET_TRICORDER
613 default 0x0
614
Tom Rini08574ed2022-10-28 20:27:07 -0400615config SYS_MONITOR_LEN
616 int "Maximum size in bytes reserved for U-Boot in memory"
617 default 1048576 if X86
Andre Przywarab072aef2022-11-19 16:10:59 +0000618 default 786432 if ARCH_SUNXI
Tom Rini08574ed2022-10-28 20:27:07 -0400619 default 0
620 help
621 Size of memory reserved for monitor code, used to determine
622 _at_compile_time_ (!) if the environment is embedded within the
623 U-Boot image, or in a separate flash sector, among other uses where
624 we need to set a maximum size of the U-Boot binary itself that will
625 be loaded.
626
Ashok Reddy Soma480245c2022-01-17 10:16:50 +0100627config MP
628 bool "Support for multiprocessor"
629 help
630 This provides an option to bringup different processors
631 in multiprocessor cases.
632
Simon Glass064a57d2023-09-14 10:55:54 -0600633config HAVE_TEXT_BASE
634 bool
635 depends on !NIOS2 && !XTENSA
636 depends on !EFI_APP
637 default y
638
639config TEXT_BASE
640 depends on HAVE_TEXT_BASE
641 default 0x0 if POSITION_INDEPENDENT
642 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
643 default 0x81700000 if MACH_SUNIV
644 default 0x2a000000 if MACH_SUN9I
645 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
646 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
647 hex "Text Base"
648 help
Jesse Taube6ab77bb2023-08-24 21:59:48 -0400649 The address in memory that U-Boot will be copied and executed from
650 initially.
651
652config HAVE_SYS_UBOOT_START
653 bool "Use custom U-Boot Start"
654 depends on HAVE_TEXT_BASE
655 help
656 By default, the address in memory that U-Boot will be copied from
657 (TEXT_BASE) and the entry point are the same. Select this to start the
658 execution of U-Boot from a different address.
659 This may be required if a header or vector table needs to be copied
660 but not executed.
661
662config SYS_UBOOT_START
663 hex
664 depends on HAVE_TEXT_BASE
665 default TEXT_BASE
666 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
667 help
668 If TEXT_BASE differs from the start of execution, this sets the
669 address in memory that U-Boot will start execution from initially.
Simon Glass064a57d2023-09-14 10:55:54 -0600670
671config HAVE_SYS_MONITOR_BASE
672 bool
673 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
674 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
675 depends on !EFI_APP
676 default y
677
678config SYS_MONITOR_BASE
679 depends on HAVE_SYS_MONITOR_BASE
680 hex "Physical start address of boot monitor code"
681 default TEXT_BASE
682 help
683 The physical start address of boot monitor code (which is the same as
684 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
685 when booting from flash.
686
687config SPL_SYS_MONITOR_BASE
688 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
689 hex "Physical start address of SPL monitor code"
690 default SPL_TEXT_BASE
691
692config TPL_SYS_MONITOR_BASE
693 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
694 hex "Physical start address of TPL monitor code"
695
696config DYNAMIC_SYS_CLK_FREQ
697 bool "Determine CPU clock frequency at run-time"
698 help
699 Implement a get_board_sys_clk function that will determine the CPU
700 clock frequency at run time, rather than define it statically.
701
702config SYS_CLK_FREQ
703 depends on !DYNAMIC_SYS_CLK_FREQ
704 int "CPU clock frequency"
705 default 125000000 if ARCH_LS1012A
706 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
707 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
708 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
709 default 66660000 if ARCH_T2080
710 default 33333333 if RCAR_GEN3
711 default 24000000 if ARCH_EXYNOS
712 default 20000000 if RCAR_GEN2
713 default 0
714 help
715 A static value for the CPU frequency. Note that if not required
716 for a given SoC, this can be left at 0.
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900717
Greg Malysabcdd0232024-03-19 22:16:07 -0400718config HAS_LDR
719 bool
720 help
721 Enables building .ldr targets for U-Boot and SPL. This does not
722 automatically build any additional targets with make or buildman.
723
724config LDR_CPU
725 string "CPU name to be passed to LDR utility."
726 depends on HAS_LDR
727 help
728 Set the CPU name for the -T parameter in the LDR utility. This is
729 generally used on processors from Analog Devices, but may be also
730 be useful for other vendors.
731
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100732source "api/Kconfig"
733
Simon Glassd761eea2023-09-14 10:55:40 -0600734endmenu # General setup
735
Simon Glass19a91f22021-10-14 12:47:54 -0600736source "boot/Kconfig"
737
Masahiro Yamadaed363232014-09-16 16:32:58 +0900738source "common/Kconfig"
739
Simon Glass72a8cf82016-01-17 20:53:51 -0700740source "cmd/Kconfig"
741
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100742source "disk/Kconfig"
743
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900744source "dts/Kconfig"
745
Simon Glass0649cd02017-08-03 12:21:49 -0600746source "env/Kconfig"
747
Masahiro Yamadaed363232014-09-16 16:32:58 +0900748source "net/Kconfig"
749
750source "drivers/Kconfig"
751
752source "fs/Kconfig"
753
754source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700755
756source "test/Kconfig"
Simon Glass1fa057b2020-09-10 20:21:27 -0600757
758source "tools/Kconfig"