blob: 19ce371a9cc2aa710b740d26891ae779616fe61f [file] [log] [blame]
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
Robert P. J. Day2f845be2016-04-16 05:53:07 -04003# see the file Documentation/kbuild/kconfig-language.txt in the
4# Linux kernel source tree.
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09005#
Tom Rini40f11702020-03-11 18:11:17 -04006mainmenu "U-Boot $(UBOOTVERSION) Configuration"
Masahiro Yamada804bc5e2014-07-30 14:08:15 +09007
Tom Rini99985942020-05-18 14:48:00 -04008comment "Compiler: $(CC_VERSION_TEXT)"
9
Tom Rini8f1be322020-05-14 08:30:01 -040010source "scripts/Kconfig.include"
11
Simon Glass157c3952015-02-24 22:26:19 +090012# Allow defaults in arch-specific code to override any given here
13source "arch/Kconfig"
14
Masahiro Yamada804bc5e2014-07-30 14:08:15 +090015menu "General setup"
16
Heinrich Schuchardt556f86d2017-10-19 23:49:19 +020017config BROKEN
18 bool
19 help
20 This option cannot be enabled. It is used as dependency
21 for broken and incomplete features.
22
Tom Rinie9518cf2019-05-29 17:01:29 -040023config DEPRECATED
24 bool
25 help
26 This option cannot be enabled. It it used as a dependency for
27 code that relies on deprecated features that will be removed and
28 the conversion deadline has passed.
29
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090030config LOCALVERSION
31 string "Local version - append to U-Boot release"
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090032 help
33 Append an extra string to the end of your U-Boot version.
Robert P. J. Day2f845be2016-04-16 05:53:07 -040034 This will show up in your boot log, for example.
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090035 The string you set here will be appended after the contents of
36 any files with a filename matching localversion* in your
37 object and source tree, in that order. Your total string can
38 be a maximum of 64 characters.
39
40config LOCALVERSION_AUTO
41 bool "Automatically append version information to the version string"
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090042 default y
43 help
44 This will try to automatically determine if the current tree is a
Robert P. J. Day2f845be2016-04-16 05:53:07 -040045 release tree by looking for Git tags that belong to the current
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090046 top of tree revision.
47
48 A string of the format -gxxxxxxxx will be added to the localversion
Robert P. J. Day2f845be2016-04-16 05:53:07 -040049 if a Git-based tree is found. The string generated by this will be
Masahiro Yamada6ea06e62014-08-22 19:42:27 +090050 appended after any matching localversion* files, and after the value
51 set in CONFIG_LOCALVERSION.
52
53 (The actual string used here is the first eight characters produced
54 by running the command:
55
56 $ git rev-parse --verify HEAD
57
58 which is done within the script "scripts/setlocalversion".)
59
Tom Rini50800632021-06-17 18:07:25 -040060config CC_IS_GCC
61 def_bool $(success,$(CC) --version | head -n 1 | grep -q gcc)
62
63config GCC_VERSION
64 int
65 default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
66 default 0
67
68config CC_IS_CLANG
69 def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
70
71config CLANG_VERSION
72 int
73 default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
74
Sean Anderson9964cae2022-02-22 12:19:24 -050075choice
76 prompt "Optimization level"
77 default CC_OPTIMIZE_FOR_SIZE
78
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090079config CC_OPTIMIZE_FOR_SIZE
80 bool "Optimize for size"
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090081 help
Sean Anderson9964cae2022-02-22 12:19:24 -050082 Enabling this option will pass "-Os" to gcc, resulting in a smaller
83 U-Boot image.
Masahiro Yamada8240a4b2014-08-22 19:42:29 +090084
85 This option is enabled by default for U-Boot.
86
Sean Anderson9964cae2022-02-22 12:19:24 -050087config CC_OPTIMIZE_FOR_SPEED
88 bool "Optimize for speed"
89 help
90 Enabling this option will pass "-O2" to gcc, resulting in a faster
91 U-Boot image.
92
Sean Andersonc73952c2022-02-22 12:19:25 -050093config CC_OPTIMIZE_FOR_DEBUG
94 bool "Optimize for debugging"
95 help
96 Enabling this option will pass "-Og" to gcc, enabling optimizations
97 which don't interfere with debugging.
98
Sean Anderson9964cae2022-02-22 12:19:24 -050099endchoice
100
Tom Rini5cbb29e2020-05-14 08:30:07 -0400101config OPTIMIZE_INLINING
Tom Riniea55ba02020-05-14 08:30:08 -0400102 bool "Allow compiler to uninline functions marked 'inline' in full U-Boot"
Tom Riniea55ba02020-05-14 08:30:08 -0400103 help
104 This option determines if U-Boot forces gcc to inline the functions
105 developers have marked 'inline'. Doing so takes away freedom from gcc to
106 do what it thinks is best, which is desirable in some cases for size
107 reasons.
108
109config SPL_OPTIMIZE_INLINING
110 bool "Allow compiler to uninline functions marked 'inline' in SPL"
111 depends on SPL
Tom Riniea55ba02020-05-14 08:30:08 -0400112 help
113 This option determines if U-Boot forces gcc to inline the functions
114 developers have marked 'inline'. Doing so takes away freedom from gcc to
115 do what it thinks is best, which is desirable in some cases for size
116 reasons.
117
Marek BehĂșnd72a3b72021-05-20 13:24:03 +0200118config ARCH_SUPPORTS_LTO
119 bool
120
121config LTO
122 bool "Enable Link Time Optimizations"
123 depends on ARCH_SUPPORTS_LTO
Marek BehĂșnd72a3b72021-05-20 13:24:03 +0200124 help
125 This option enables Link Time Optimization (LTO), a mechanism which
126 allows the compiler to optimize between different compilation units.
127
128 This can optimize away dead code paths, resulting in smaller binary
129 size (if CC_OPTIMIZE_FOR_SIZE is enabled).
130
131 This option is not available for every architecture and may
132 introduce bugs.
133
134 Currently, when compiling with GCC, due to a weird bug regarding
135 jobserver, the final linking will not respect make's --jobs argument.
136 Instead all available processors will be used (as reported by the
137 nproc command).
138
139 If unsure, say n.
140
Tom Riniea55ba02020-05-14 08:30:08 -0400141config TPL_OPTIMIZE_INLINING
142 bool "Allow compiler to uninline functions marked 'inline' in TPL"
143 depends on TPL
Tom Rini5cbb29e2020-05-14 08:30:07 -0400144 help
145 This option determines if U-Boot forces gcc to inline the functions
146 developers have marked 'inline'. Doing so takes away freedom from gcc to
147 do what it thinks is best, which is desirable in some cases for size
148 reasons.
149
Christian Gmeiner0e7c0712018-04-09 17:11:45 +0200150config CC_COVERAGE
151 bool "Enable code coverage analysis"
152 depends on SANDBOX
153 help
154 Enabling this option will pass "--coverage" to gcc to compile
155 and link code instrumented for coverage analysis.
156
Andrew Scullf9a2c5e2022-05-30 10:00:05 +0000157config ASAN
158 bool "Enable AddressSanitizer"
159 depends on SANDBOX
160 help
161 Enables AddressSanitizer to discover out-of-bounds accesses,
162 use-after-free, double-free and memory leaks.
163
Andrew Sculle184c5b2022-05-30 10:00:09 +0000164config FUZZ
165 bool "Enable fuzzing"
166 depends on CC_IS_CLANG
167 depends on DM_FUZZING_ENGINE
168 select ASAN
169 help
170 Enables the fuzzing infrastructure to generate fuzzing data and run
171 fuzz tests.
172
Tom Rini7c34ae42020-05-14 08:30:06 -0400173config CC_HAS_ASM_INLINE
174 def_bool $(success,echo 'void foo(void) { asm inline (""); }' | $(CC) -x c - -c -o /dev/null)
175
Peng Fanf08fa492020-08-06 12:42:45 +0300176config XEN
177 bool "Select U-Boot be run as a bootloader for XEN Virtual Machine"
Michal Simek300adaa2023-04-18 14:51:55 +0200178 depends on ARM64
Michal Simek90dccc22023-04-06 10:04:15 +0200179 select SSCANF
Peng Fanf08fa492020-08-06 12:42:45 +0300180 help
181 Enabling this option will make U-Boot be run as a bootloader
182 for XEN [1] Virtual Machine.
183
184 Xen is a virtual machine monitor (VMM) or a type-1 hypervisor with support
185 for para-virtualization. Xen can organize the safe execution of several
186 virtual machines on the same physical system with performance close to
187 native. It is used as the basis for a number of different commercial and
188 open source applications, such as: server virtualization, Infrastructure
189 as a Service (IaaS), desktop virtualization, security applications,
190 embedded and hardware appliances.
191 Xen has a special VM called Domain-0 that runs the Dom0 kernel and allows
192 Xen to use the device drivers for the Domain-0 kernel by default.
193
194 [1] - https://xenproject.org/
195
Adam Ford58dbf862018-02-06 07:58:59 -0600196config ENV_VARS_UBOOT_CONFIG
197 bool "Add arch, board, vendor and soc variables to default environment"
198 help
199 Define this in order to add variables describing the
200 U-Boot build configuration to the default environment.
201 These will be named arch, cpu, board, vendor, and soc.
202 Enabling this option will cause the following to be defined:
203 - CONFIG_SYS_ARCH
204 - CONFIG_SYS_CPU
205 - CONFIG_SYS_BOARD
206 - CONFIG_SYS_VENDOR
207 - CONFIG_SYS_SOC
208
Ramon Fried99826612018-08-14 01:00:04 +0300209config NR_DRAM_BANKS
210 int "Number of DRAM banks"
Amit Singh Tomar82704fa2020-04-19 19:28:34 +0530211 default 1 if ARCH_SUNXI || ARCH_OWL
Ramon Fried99826612018-08-14 01:00:04 +0300212 default 4
213 help
214 This defines the number of DRAM banks.
215
Derald D. Woodseb730bd2018-01-22 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 Rinic253f122022-05-12 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. Woodseb730bd2018-01-22 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 Rini4ddbade2022-05-25 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 Kocialkowskiaf6acb42024-07-28 22:24:54 +0200239 default y if OMAP34XX || AM33XX || AM43XX
Tom Rini4ddbade2022-05-25 12:16:03 -0400240 default y if TFABOOT
241 help
242 Typically, we use an initial stack pointer address that is calculated
Tom Rini6a5dccc2022-11-16 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 Rini4ddbade2022-05-25 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 Kocialkowski50056582024-07-28 22:24:51 +0200253 default 0x4020ff00 if OMAP34XX
Paul Kocialkowski261bd962024-07-28 22:24:53 +0200254 default 0x4030ff00 if AM33XX
Paul Kocialkowskiaf6acb42024-07-28 22:24:54 +0200255 default 0x4033ff00 if AM43XX
Simon Glass72cc5382022-10-20 18:22:39 -0600256 default TEXT_BASE if TFABOOT
Tom Rini4ddbade2022-05-25 12:16:03 -0400257
Simon Glass838723b2015-02-11 16:32:59 -0700258config SYS_MALLOC_F
259 bool "Enable malloc() pool before relocation"
Masahiro Yamadac6988242015-03-19 19:42:55 +0900260 default y if DM
Simon Glassb24fdd42018-12-03 04:37:17 -0700261
Simon Glass838723b2015-02-11 16:32:59 -0700262 help
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400263 Before relocation, memory is very limited on many platforms. Still,
Simon Glass838723b2015-02-11 16:32:59 -0700264 we can provide a small malloc() pool if needed. Driver model in
265 particular needs this to operate, so that it can allocate the
266 initial serial device and any others that are needed.
267
268config SYS_MALLOC_F_LEN
269 hex "Size of malloc() pool before relocation"
270 depends on SYS_MALLOC_F
Tom Rini324cf142022-04-07 12:33:23 -0400271 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlmane60b92e2024-03-02 19:16:12 +0000272 ROCKCHIP_RV1108
Tom Rini324cf142022-04-07 12:33:23 -0400273 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
274 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
275 ROCKCHIP_RK322X || X86
Tom Riniae683732022-04-07 12:33:24 -0400276 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rini324cf142022-04-07 12:33:23 -0400277 default 0x1800 if ARCH_TEGRA
278 default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
279 ROCKCHIP_RK3399
280 default 0x8000 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800281 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rini324cf142022-04-07 12:33:23 -0400282 default 0x2000
Simon Glass838723b2015-02-11 16:32:59 -0700283 help
Simon Glassc1aae9b2023-09-26 08:14:29 -0600284 Size of the malloc() pool for use before relocation. If
285 this is defined, then a very simple malloc() implementation
286 will become available before relocation. The address is just
287 below the global data, and the stack is moved down to make
288 space.
289
290 This feature allocates regions with increasing addresses
291 within the region. calloc() is supported, but realloc()
292 is not available. free() is supported but does nothing.
293 The memory will be freed (or in fact just forgotten) when
294 U-Boot relocates itself.
Simon Glass838723b2015-02-11 16:32:59 -0700295
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530296config SYS_MALLOC_LEN
297 hex "Define memory for Dynamic allocation"
Tom Rini4c538442022-04-14 11:34:47 -0400298 default 0x4000000 if SANDBOX
Tom Rinie065fb12021-08-28 21:34:49 -0400299 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rinie065fb12021-08-28 21:34:49 -0400300 default 0x200000 if ARCH_BMIPS || X86
Andre Przywaraa2860fb2022-07-03 00:47:20 +0100301 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
302 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
303 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rinie065fb12021-08-28 21:34:49 -0400304 default 0x400000
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530305 help
306 This defines memory to be allocated for Dynamic allocation
307 TODO: Use for other architectures
308
Simon Glass2f7409a2023-09-26 08:14:24 -0600309config SPL_SYS_MALLOC_F
310 bool "Enable malloc() pool in SPL"
311 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
312 default y
313 help
314 In SPL memory is very limited on many platforms. Still,
315 we can provide a small malloc() pool if needed. Driver model in
316 particular needs this to operate, so that it can allocate the
317 initial serial device and any others that are needed.
318
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800319config SPL_SYS_MALLOC_F_LEN
Simon Glassbbfdaf32021-01-21 13:57:06 -0700320 hex "Size of malloc() pool in SPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600321 depends on SPL_SYS_MALLOC_F
Marek Vasute39fa7d2018-10-03 12:44:13 +0200322 default 0x2800 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800323 default 0x2000 if IMX8MQ
Michal Simek0601c1b2018-07-24 14:47:43 +0200324 default SYS_MALLOC_F_LEN
325 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600326 Sets the size of the malloc() pool in SPL. This is used for
327 driver model and other features, which must allocate memory for
328 data structures.
Philipp Tomsich10139352017-07-28 11:06:03 +0200329
Simon Glass67e3fca2023-09-26 08:14:16 -0600330 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glassbbfdaf32021-01-21 13:57:06 -0700331 malloc() region in SDRAM once it is inited.
332
Simon Glass2f7409a2023-09-26 08:14:24 -0600333config TPL_SYS_MALLOC_F
John Keepingcd689722023-11-14 11:30:17 +0000334 bool "Enable malloc() pool in TPL"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500335 depends on SYS_MALLOC_F && TPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600336 default y if SPL_SYS_MALLOC_F
Michal Simek0601c1b2018-07-24 14:47:43 +0200337 help
Simon Glassbbfdaf32021-01-21 13:57:06 -0700338 In TPL memory is very limited on many platforms. Still,
Michal Simek0601c1b2018-07-24 14:47:43 +0200339 we can provide a small malloc() pool if needed. Driver model in
340 particular needs this to operate, so that it can allocate the
341 initial serial device and any others that are needed.
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800342
Simon Glass2f7409a2023-09-26 08:14:24 -0600343config TPL_SYS_MALLOC_F_LEN
344 hex "Size of malloc() pool in TPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600345 depends on TPL_SYS_MALLOC_F
Simon Glass2f7409a2023-09-26 08:14:24 -0600346 default SPL_SYS_MALLOC_F_LEN
347 help
348 Sets the size of the malloc() pool in TPL. This is used for
349 driver model and other features, which must allocate memory for
350 data structures.
351
Sean Anderson3b004842022-03-23 14:04:48 -0400352config VALGRIND
353 bool "Inform valgrind about memory allocations"
Sean Anderson39866b62022-05-27 10:03:00 -0400354 depends on !RISCV
Sean Anderson3b004842022-03-23 14:04:48 -0400355 help
356 Valgrind is an instrumentation framework for building dynamic analysis
357 tools. In particular, it may be used to detect memory management bugs
358 in U-Boot. It relies on knowing when heap blocks are allocated in
359 order to give accurate results. This happens automatically for
360 standard allocator functions provided by the host OS. However, this
361 doesn't automatically happen for U-Boot's malloc implementation.
362
363 Enable this option to annotate U-Boot's malloc implementation so that
364 it can be handled accurately by Valgrind. If you aren't planning on
365 using valgrind to debug U-Boot, say 'n'.
366
Simon Glass2f7409a2023-09-26 08:14:24 -0600367config VPL_SYS_MALLOC_F
368 bool "Enable malloc() pool in VPL"
Simon Glasse7ca7da2022-04-30 00:56:53 -0600369 depends on SYS_MALLOC_F && VPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600370 default y if SPL_SYS_MALLOC_F
Simon Glasse7ca7da2022-04-30 00:56:53 -0600371 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600372 In VPL memory is very limited on many platforms. Still,
Simon Glasse7ca7da2022-04-30 00:56:53 -0600373 we can provide a small malloc() pool if needed. Driver model in
374 particular needs this to operate, so that it can allocate the
375 initial serial device and any others that are needed.
376
Simon Glass2f7409a2023-09-26 08:14:24 -0600377config VPL_SYS_MALLOC_F_LEN
378 hex "Size of malloc() pool in VPL before relocation"
Simon Glassadad2d02023-09-26 08:14:27 -0600379 depends on VPL_SYS_MALLOC_F
380 default SPL_SYS_MALLOC_F_LEN
Simon Glass2f7409a2023-09-26 08:14:24 -0600381 help
382 Sets the size of the malloc() pool in VPL. This is used for
383 driver model and other features, which must allocate memory for
384 data structures.
385
Tom Rinia50d5b52014-11-14 09:34:29 +0100386menuconfig EXPERT
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100387 bool "Configure standard U-Boot features (expert users)"
388 default y
389 help
390 This option allows certain base U-Boot options and settings
391 to be disabled or tweaked. This is for specialized
392 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400393 Use this only if you really know what you are doing.
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100394
395if EXPERT
396 config SYS_MALLOC_CLEAR_ON_INIT
397 bool "Init with zeros the memory reserved for malloc (slow)"
398 default y
399 help
400 This setting is enabled by default. The reserved malloc
401 memory is initialized with zeros, so first malloc calls
402 will return the pointer to the zeroed memory. But this
403 slows the boot time.
Tom Rinia50d5b52014-11-14 09:34:29 +0100404
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100405 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
406 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
407 Then the boot time can be significantly reduced.
408 Warning:
409 When disabling this, please check if malloc calls, maybe
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400410 should be replaced by calloc - if one expects zeroed memory.
Simon Glass86a64492016-06-30 10:52:20 -0600411
Shengyu Qu9b676302023-08-25 00:25:18 +0800412config SPL_SYS_MALLOC_CLEAR_ON_INIT
413 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
414 depends on SPL
415 default SYS_MALLOC_CLEAR_ON_INIT
416 help
417 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
418 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
419 that must have particular memory regions zero'ed before first use.
420 If SYS_SPL_MALLOC_START is configured to be in such region, this
421 option should be enabled.
422
Marek Bykowskib4032a72020-04-29 18:23:07 +0200423config SYS_MALLOC_DEFAULT_TO_INIT
424 bool "Default malloc to init while reserving the memory for it"
Marek Bykowskib4032a72020-04-29 18:23:07 +0200425 help
426 It may happen that one needs to move the dynamic allocation
427 from one to another memory range, eg. when moving the malloc
428 from the limited static to a potentially large dynamic (DDR)
429 memory.
430
431 If so then on top of setting the updated memory aside one
432 needs to bring the malloc init.
433
434 If such a scenario is sought choose yes.
435
Simon Glass86a64492016-06-30 10:52:20 -0600436config TOOLS_DEBUG
437 bool "Enable debug information for tools"
438 help
439 Enable generation of debug information for tools such as mkimage.
440 This can be used for debugging purposes. With debug information
441 it is possible to set breakpoints on particular lines, single-step
442 debug through the source code, etc.
443
Robert P. J. Daye4829f32017-01-02 16:32:13 -0500444endif # EXPERT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900445
446config PHYS_64BIT
447 bool "64bit physical address support"
Johan Jonker02e3e062023-03-13 01:33:23 +0100448 select FDT_64BIT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900449 help
450 Say Y here to support 64bit physical memory address.
451 This can be used not only for 64bit SoCs, but also for
Chris Packham2b52a242019-01-13 22:13:19 +1300452 large physical address extension on 32bit SoCs.
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900453
Johan Jonker02e3e062023-03-13 01:33:23 +0100454config FDT_64BIT
455 bool "64bit fdt address support"
456 help
457 Say Y here to support 64bit fdt addresses.
458 This can be used not only for 64bit SoCs, but also
459 for large address extensions on 32bit SoCs.
460
Simon Glassf69c0092020-07-19 13:55:52 -0600461config HAS_ROM
462 bool
463 select BINMAN
464 help
465 Enables building of a u-boot.rom target. This collects U-Boot and
466 any necessary binary blobs.
467
Stefan Roesee915cbc2019-04-03 15:24:50 +0200468config SPL_IMAGE
469 string "SPL image used in the combined SPL+U-Boot image"
470 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
471 default "spl/u-boot-spl.bin"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500472 depends on SPL
Stefan Roesee915cbc2019-04-03 15:24:50 +0200473 help
474 Select the SPL build target that shall be generated by the SPL
475 build process (default spl/u-boot-spl.bin). This image will be
476 used to generate a combined image with SPL and main U-Boot
477 proper as one single image.
478
Alper Nebi Yasak2beb0f42022-01-29 18:25:30 +0300479config REMAKE_ELF
480 bool "Recreate an ELF image from raw U-Boot binary"
481 help
482 Enable this to recreate an ELF image (u-boot.elf) from the raw
483 U-Boot binary (u-boot.bin), which may already have been statically
484 relocated and may already have a device-tree appended to it.
485
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530486config BUILD_TARGET
487 string "Build target special images"
Hai Pham9046b5f2023-02-28 22:22:03 +0100488 default "u-boot-elf.srec" if RCAR_64
Marek Vasut9a976c12023-02-28 07:22:21 +0100489 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
490 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
491 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
492 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreen8fb280c2019-03-20 13:15:21 -0700493 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
494 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glass6a50cd12020-07-19 13:56:12 -0600495 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland3be2d9f2023-01-22 11:23:51 -0600496 RISCV || ARCH_ZYNQMP)
Pali RohĂĄra4a4f952022-12-29 02:39:19 +0100497 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530498 help
499 Some SoCs need special image types (e.g. U-Boot binary
500 with a special header) as build targets. By defining
501 CONFIG_BUILD_TARGET in the SoC / board header, this
502 special image will be automatically built upon calling
503 make / buildman.
504
Tom Rini876df342022-03-30 18:07:11 -0400505config HAS_BOARD_SIZE_LIMIT
506 bool "Define a maximum size for the U-Boot image"
Marek Vasutb42de382024-02-11 18:34:29 +0100507 default y if RCAR_32 || RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400508 help
509 In some cases, we need to enforce a hard limit on how big the U-Boot
510 image itself can be.
511
512config BOARD_SIZE_LIMIT
513 int "Maximum size of the U-Boot image in bytes"
Marek Vasutb42de382024-02-11 18:34:29 +0100514 default 524288 if RCAR_32
Hai Pham9046b5f2023-02-28 22:22:03 +0100515 default 1048576 if RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400516 depends on HAS_BOARD_SIZE_LIMIT
517 help
518 Maximum size of the U-Boot image. When defined, the build system
519 checks that the actual size does not exceed it. This does not
520 include SPL nor TPL, on platforms that use that functionality, they
521 have a separate option to restict size.
522
Tom Rinie478f702019-06-02 08:57:32 -0400523config SYS_CUSTOM_LDSCRIPT
524 bool "Use a custom location for the U-Boot linker script"
525 help
526 Normally when linking U-Boot we will look in the board directory,
527 the CPU directory and finally the "cpu" directory of the architecture
528 for the ile "u-boot.lds" and use that as our linker. However, in
529 some cases we need to provide a different linker script. To do so,
530 enable this option and then provide the location under
531 CONFIG_SYS_LDSCRIPT.
532
533config SYS_LDSCRIPT
534 depends on SYS_CUSTOM_LDSCRIPT
535 string "Custom ldscript location"
536 help
537 Path within the source tree to the linker script to use for the
538 main U-Boot binary.
539
Tom Rini0997ee02021-08-23 10:25:31 -0400540config SYS_LOAD_ADDR
541 hex "Address in memory to use by default"
542 default 0x01000000 if ARCH_SOCFPGA
543 default 0x02000000 if PPC || X86
Icenowy Zheng711fab32022-01-29 10:23:09 -0500544 default 0x81000000 if MACH_SUNIV
Tom Rini0997ee02021-08-23 10:25:31 -0400545 default 0x22000000 if MACH_SUN9I
Icenowy Zheng711fab32022-01-29 10:23:09 -0500546 default 0x42000000 if ARCH_SUNXI
Tom Rini0997ee02021-08-23 10:25:31 -0400547 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
548 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
549 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
550 default 0x80800000 if ARCH_MX7
551 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
552 help
553 Address in memory to use as the default safe load address.
554
Simon Goldschmidt9c055112019-10-22 21:29:46 +0200555config ERR_PTR_OFFSET
556 hex
557 default 0x0
558 help
559 Some U-Boot pointers have redundant information, so we can use a
560 scheme where we can return either an error code or a pointer with the
561 same return value. The default implementation just casts the pointer
562 to a number, however, this may fail on platforms where the end of the
563 address range is used for valid pointers (e.g. 0xffffff00 is a valid
564 heap pointer in socfpga SPL).
565 For such platforms, this value provides an upper range of those error
566 pointer values - up to 'MAX_ERRNO' bytes below this value must be
567 unused/invalid addresses.
568
Michal Simek5d458a12020-03-30 13:58:59 +0200569config PLATFORM_ELFENTRY
570 string
571 default "__start" if MIPS
572 default "_start"
573
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200574config STACK_SIZE
575 hex "Define max stack size that can be used by U-Boot"
Michal Simek2e53eb22022-09-19 14:21:02 +0200576 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200577 default 0x200000 if MICROBLAZE
578 default 0x1000000
579 help
580 Define Max stack size that can be used by U-Boot. This value is used
581 by the UEFI sub-system. On some boards initrd_high is calculated as
582 base stack pointer minus this stack size.
583
Tom Rini5c1e7272022-04-06 10:33:32 -0400584config SYS_MEM_TOP_HIDE
585 hex "Exclude some memory from U-Boot / OS information"
586 default 0x0
587 help
588 If set, this specified memory area will get subtracted from the top
589 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
590 gd->ram_size the OS / next stage should gets passed the now
591 "corrected" memory size and won't touch it either.
592 WARNING: Please make sure that this value is a multiple of the OS
593 page size.
594
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300595config SYS_HAS_SRAM
596 bool
597 default y if TARGET_PIC32MZDASK
598 default y if TARGET_DEVKIT8000
599 default y if TARGET_TRICORDER
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300600 help
601 Enable this to allow support for the on board SRAM.
602 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
603 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
604
Ovidiu Panait62749212020-07-24 14:12:10 +0300605config SYS_SRAM_BASE
606 hex
607 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait0a2ef262020-07-24 14:12:12 +0300608 default 0x40200000 if TARGET_DEVKIT8000
609 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panait62749212020-07-24 14:12:10 +0300610 default 0x0
611
Ovidiu Panaitcb229962020-07-24 14:12:11 +0300612config SYS_SRAM_SIZE
613 hex
614 default 0x00080000 if TARGET_PIC32MZDASK
615 default 0x10000 if TARGET_DEVKIT8000
616 default 0x10000 if TARGET_TRICORDER
617 default 0x0
618
Tom Rini7f184322022-10-28 20:27:07 -0400619config SYS_MONITOR_LEN
620 int "Maximum size in bytes reserved for U-Boot in memory"
621 default 1048576 if X86
Andre Przywara5b3c3372022-11-19 16:10:59 +0000622 default 786432 if ARCH_SUNXI
Tom Rini7f184322022-10-28 20:27:07 -0400623 default 0
624 help
625 Size of memory reserved for monitor code, used to determine
626 _at_compile_time_ (!) if the environment is embedded within the
627 U-Boot image, or in a separate flash sector, among other uses where
628 we need to set a maximum size of the U-Boot binary itself that will
629 be loaded.
630
Ashok Reddy Soma1e6f9962022-01-17 10:16:50 +0100631config MP
632 bool "Support for multiprocessor"
633 help
634 This provides an option to bringup different processors
635 in multiprocessor cases.
636
Simon Glassf7b09e22023-09-14 10:55:54 -0600637config HAVE_TEXT_BASE
638 bool
639 depends on !NIOS2 && !XTENSA
640 depends on !EFI_APP
641 default y
642
643config TEXT_BASE
644 depends on HAVE_TEXT_BASE
645 default 0x0 if POSITION_INDEPENDENT
646 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
647 default 0x81700000 if MACH_SUNIV
648 default 0x2a000000 if MACH_SUN9I
649 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
650 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
651 hex "Text Base"
652 help
Jesse Taube93ee5c82023-08-24 21:59:48 -0400653 The address in memory that U-Boot will be copied and executed from
654 initially.
655
656config HAVE_SYS_UBOOT_START
657 bool "Use custom U-Boot Start"
658 depends on HAVE_TEXT_BASE
659 help
660 By default, the address in memory that U-Boot will be copied from
661 (TEXT_BASE) and the entry point are the same. Select this to start the
662 execution of U-Boot from a different address.
663 This may be required if a header or vector table needs to be copied
664 but not executed.
665
666config SYS_UBOOT_START
667 hex
668 depends on HAVE_TEXT_BASE
669 default TEXT_BASE
670 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
671 help
672 If TEXT_BASE differs from the start of execution, this sets the
673 address in memory that U-Boot will start execution from initially.
Simon Glassf7b09e22023-09-14 10:55:54 -0600674
675config HAVE_SYS_MONITOR_BASE
676 bool
677 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
678 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
679 depends on !EFI_APP
680 default y
681
682config SYS_MONITOR_BASE
683 depends on HAVE_SYS_MONITOR_BASE
684 hex "Physical start address of boot monitor code"
685 default TEXT_BASE
686 help
687 The physical start address of boot monitor code (which is the same as
688 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
689 when booting from flash.
690
691config SPL_SYS_MONITOR_BASE
692 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
693 hex "Physical start address of SPL monitor code"
694 default SPL_TEXT_BASE
695
696config TPL_SYS_MONITOR_BASE
697 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
698 hex "Physical start address of TPL monitor code"
699
700config DYNAMIC_SYS_CLK_FREQ
701 bool "Determine CPU clock frequency at run-time"
702 help
703 Implement a get_board_sys_clk function that will determine the CPU
704 clock frequency at run time, rather than define it statically.
705
706config SYS_CLK_FREQ
707 depends on !DYNAMIC_SYS_CLK_FREQ
708 int "CPU clock frequency"
709 default 125000000 if ARCH_LS1012A
710 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
711 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
712 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
713 default 66660000 if ARCH_T2080
714 default 33333333 if RCAR_GEN3
715 default 24000000 if ARCH_EXYNOS
716 default 20000000 if RCAR_GEN2
717 default 0
718 help
719 A static value for the CPU frequency. Note that if not required
720 for a given SoC, this can be left at 0.
Masahiro Yamada9eeddf22014-11-26 18:42:31 +0900721
Greg Malysa547f54c2024-03-19 22:16:07 -0400722config HAS_LDR
723 bool
724 help
725 Enables building .ldr targets for U-Boot and SPL. This does not
726 automatically build any additional targets with make or buildman.
727
728config LDR_CPU
729 string "CPU name to be passed to LDR utility."
730 depends on HAS_LDR
731 help
732 Set the CPU name for the -T parameter in the LDR utility. This is
733 generally used on processors from Analog Devices, but may be also
734 be useful for other vendors.
735
Emmanuel Vadotaa020992017-01-31 12:17:04 +0100736source "api/Kconfig"
737
Simon Glass06c10352023-09-14 10:55:40 -0600738endmenu # General setup
739
Simon Glass91944df2021-10-14 12:47:54 -0600740source "boot/Kconfig"
741
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900742source "common/Kconfig"
743
Simon Glass29499a02016-01-17 20:53:51 -0700744source "cmd/Kconfig"
745
Patrick Delaunaydc280602017-01-27 11:00:35 +0100746source "disk/Kconfig"
747
Masahiro Yamada9fadbc82014-09-22 19:59:05 +0900748source "dts/Kconfig"
749
Simon Glass547cb402017-08-03 12:21:49 -0600750source "env/Kconfig"
751
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900752source "net/Kconfig"
753
754source "drivers/Kconfig"
755
756source "fs/Kconfig"
757
758source "lib/Kconfig"
Simon Glass9dd430d2015-02-05 21:41:37 -0700759
760source "test/Kconfig"
Simon Glass31b24b42020-09-10 20:21:27 -0600761
762source "tools/Kconfig"