blob: 69e8b17b793340d15911fdc69f6e0ae1f1d080f1 [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 Kocialkowskibba0ae02024-07-28 22:24:56 +0200239 default y if OMAP34XX || AM33XX || AM43XX || DRA7XX
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
Paul Kocialkowskibba0ae02024-07-28 22:24:56 +0200256 default 0x4037ff00 if DRA7XX
Simon Glass72cc5382022-10-20 18:22:39 -0600257 default TEXT_BASE if TFABOOT
Tom Rini4ddbade2022-05-25 12:16:03 -0400258
Simon Glass838723b2015-02-11 16:32:59 -0700259config SYS_MALLOC_F
260 bool "Enable malloc() pool before relocation"
Masahiro Yamadac6988242015-03-19 19:42:55 +0900261 default y if DM
Simon Glassb24fdd42018-12-03 04:37:17 -0700262
Simon Glass838723b2015-02-11 16:32:59 -0700263 help
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400264 Before relocation, memory is very limited on many platforms. Still,
Simon Glass838723b2015-02-11 16:32:59 -0700265 we can provide a small malloc() pool if needed. Driver model in
266 particular needs this to operate, so that it can allocate the
267 initial serial device and any others that are needed.
268
269config SYS_MALLOC_F_LEN
270 hex "Size of malloc() pool before relocation"
271 depends on SYS_MALLOC_F
Tom Rini324cf142022-04-07 12:33:23 -0400272 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
Jonas Karlmane60b92e2024-03-02 19:16:12 +0000273 ROCKCHIP_RV1108
Tom Rini324cf142022-04-07 12:33:23 -0400274 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
275 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
276 ROCKCHIP_RK322X || X86
Tom Riniae683732022-04-07 12:33:24 -0400277 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rini324cf142022-04-07 12:33:23 -0400278 default 0x1800 if ARCH_TEGRA
279 default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
280 ROCKCHIP_RK3399
281 default 0x8000 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800282 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rini324cf142022-04-07 12:33:23 -0400283 default 0x2000
Simon Glass838723b2015-02-11 16:32:59 -0700284 help
Simon Glassc1aae9b2023-09-26 08:14:29 -0600285 Size of the malloc() pool for use before relocation. If
286 this is defined, then a very simple malloc() implementation
287 will become available before relocation. The address is just
288 below the global data, and the stack is moved down to make
289 space.
290
291 This feature allocates regions with increasing addresses
292 within the region. calloc() is supported, but realloc()
293 is not available. free() is supported but does nothing.
294 The memory will be freed (or in fact just forgotten) when
295 U-Boot relocates itself.
Simon Glass838723b2015-02-11 16:32:59 -0700296
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530297config SYS_MALLOC_LEN
298 hex "Define memory for Dynamic allocation"
Tom Rini4c538442022-04-14 11:34:47 -0400299 default 0x4000000 if SANDBOX
Tom Rinie065fb12021-08-28 21:34:49 -0400300 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rinie065fb12021-08-28 21:34:49 -0400301 default 0x200000 if ARCH_BMIPS || X86
Andre Przywaraa2860fb2022-07-03 00:47:20 +0100302 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
303 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
304 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rinie065fb12021-08-28 21:34:49 -0400305 default 0x400000
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530306 help
307 This defines memory to be allocated for Dynamic allocation
308 TODO: Use for other architectures
309
Simon Glass2f7409a2023-09-26 08:14:24 -0600310config SPL_SYS_MALLOC_F
311 bool "Enable malloc() pool in SPL"
312 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
313 default y
314 help
315 In SPL memory is very limited on many platforms. Still,
316 we can provide a small malloc() pool if needed. Driver model in
317 particular needs this to operate, so that it can allocate the
318 initial serial device and any others that are needed.
319
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800320config SPL_SYS_MALLOC_F_LEN
Simon Glassbbfdaf32021-01-21 13:57:06 -0700321 hex "Size of malloc() pool in SPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600322 depends on SPL_SYS_MALLOC_F
Marek Vasute39fa7d2018-10-03 12:44:13 +0200323 default 0x2800 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800324 default 0x2000 if IMX8MQ
Michal Simek0601c1b2018-07-24 14:47:43 +0200325 default SYS_MALLOC_F_LEN
326 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600327 Sets the size of the malloc() pool in SPL. This is used for
328 driver model and other features, which must allocate memory for
329 data structures.
Philipp Tomsich10139352017-07-28 11:06:03 +0200330
Simon Glass67e3fca2023-09-26 08:14:16 -0600331 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glassbbfdaf32021-01-21 13:57:06 -0700332 malloc() region in SDRAM once it is inited.
333
Simon Glass2f7409a2023-09-26 08:14:24 -0600334config TPL_SYS_MALLOC_F
John Keepingcd689722023-11-14 11:30:17 +0000335 bool "Enable malloc() pool in TPL"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500336 depends on SYS_MALLOC_F && TPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600337 default y if SPL_SYS_MALLOC_F
Michal Simek0601c1b2018-07-24 14:47:43 +0200338 help
Simon Glassbbfdaf32021-01-21 13:57:06 -0700339 In TPL memory is very limited on many platforms. Still,
Michal Simek0601c1b2018-07-24 14:47:43 +0200340 we can provide a small malloc() pool if needed. Driver model in
341 particular needs this to operate, so that it can allocate the
342 initial serial device and any others that are needed.
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800343
Simon Glass2f7409a2023-09-26 08:14:24 -0600344config TPL_SYS_MALLOC_F_LEN
345 hex "Size of malloc() pool in TPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600346 depends on TPL_SYS_MALLOC_F
Simon Glass2f7409a2023-09-26 08:14:24 -0600347 default SPL_SYS_MALLOC_F_LEN
348 help
349 Sets the size of the malloc() pool in TPL. This is used for
350 driver model and other features, which must allocate memory for
351 data structures.
352
Sean Anderson3b004842022-03-23 14:04:48 -0400353config VALGRIND
354 bool "Inform valgrind about memory allocations"
Sean Anderson39866b62022-05-27 10:03:00 -0400355 depends on !RISCV
Sean Anderson3b004842022-03-23 14:04:48 -0400356 help
357 Valgrind is an instrumentation framework for building dynamic analysis
358 tools. In particular, it may be used to detect memory management bugs
359 in U-Boot. It relies on knowing when heap blocks are allocated in
360 order to give accurate results. This happens automatically for
361 standard allocator functions provided by the host OS. However, this
362 doesn't automatically happen for U-Boot's malloc implementation.
363
364 Enable this option to annotate U-Boot's malloc implementation so that
365 it can be handled accurately by Valgrind. If you aren't planning on
366 using valgrind to debug U-Boot, say 'n'.
367
Simon Glass2f7409a2023-09-26 08:14:24 -0600368config VPL_SYS_MALLOC_F
369 bool "Enable malloc() pool in VPL"
Simon Glasse7ca7da2022-04-30 00:56:53 -0600370 depends on SYS_MALLOC_F && VPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600371 default y if SPL_SYS_MALLOC_F
Simon Glasse7ca7da2022-04-30 00:56:53 -0600372 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600373 In VPL memory is very limited on many platforms. Still,
Simon Glasse7ca7da2022-04-30 00:56:53 -0600374 we can provide a small malloc() pool if needed. Driver model in
375 particular needs this to operate, so that it can allocate the
376 initial serial device and any others that are needed.
377
Simon Glass2f7409a2023-09-26 08:14:24 -0600378config VPL_SYS_MALLOC_F_LEN
379 hex "Size of malloc() pool in VPL before relocation"
Simon Glassadad2d02023-09-26 08:14:27 -0600380 depends on VPL_SYS_MALLOC_F
381 default SPL_SYS_MALLOC_F_LEN
Simon Glass2f7409a2023-09-26 08:14:24 -0600382 help
383 Sets the size of the malloc() pool in VPL. This is used for
384 driver model and other features, which must allocate memory for
385 data structures.
386
Tom Rinia50d5b52014-11-14 09:34:29 +0100387menuconfig EXPERT
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100388 bool "Configure standard U-Boot features (expert users)"
389 default y
390 help
391 This option allows certain base U-Boot options and settings
392 to be disabled or tweaked. This is for specialized
393 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400394 Use this only if you really know what you are doing.
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100395
396if EXPERT
397 config SYS_MALLOC_CLEAR_ON_INIT
398 bool "Init with zeros the memory reserved for malloc (slow)"
399 default y
400 help
401 This setting is enabled by default. The reserved malloc
402 memory is initialized with zeros, so first malloc calls
403 will return the pointer to the zeroed memory. But this
404 slows the boot time.
Tom Rinia50d5b52014-11-14 09:34:29 +0100405
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100406 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
407 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
408 Then the boot time can be significantly reduced.
409 Warning:
410 When disabling this, please check if malloc calls, maybe
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400411 should be replaced by calloc - if one expects zeroed memory.
Simon Glass86a64492016-06-30 10:52:20 -0600412
Shengyu Qu9b676302023-08-25 00:25:18 +0800413config SPL_SYS_MALLOC_CLEAR_ON_INIT
414 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
415 depends on SPL
416 default SYS_MALLOC_CLEAR_ON_INIT
417 help
418 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
419 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
420 that must have particular memory regions zero'ed before first use.
421 If SYS_SPL_MALLOC_START is configured to be in such region, this
422 option should be enabled.
423
Marek Bykowskib4032a72020-04-29 18:23:07 +0200424config SYS_MALLOC_DEFAULT_TO_INIT
425 bool "Default malloc to init while reserving the memory for it"
Marek Bykowskib4032a72020-04-29 18:23:07 +0200426 help
427 It may happen that one needs to move the dynamic allocation
428 from one to another memory range, eg. when moving the malloc
429 from the limited static to a potentially large dynamic (DDR)
430 memory.
431
432 If so then on top of setting the updated memory aside one
433 needs to bring the malloc init.
434
435 If such a scenario is sought choose yes.
436
Simon Glass86a64492016-06-30 10:52:20 -0600437config TOOLS_DEBUG
438 bool "Enable debug information for tools"
439 help
440 Enable generation of debug information for tools such as mkimage.
441 This can be used for debugging purposes. With debug information
442 it is possible to set breakpoints on particular lines, single-step
443 debug through the source code, etc.
444
Robert P. J. Daye4829f32017-01-02 16:32:13 -0500445endif # EXPERT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900446
447config PHYS_64BIT
448 bool "64bit physical address support"
Johan Jonker02e3e062023-03-13 01:33:23 +0100449 select FDT_64BIT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900450 help
451 Say Y here to support 64bit physical memory address.
452 This can be used not only for 64bit SoCs, but also for
Chris Packham2b52a242019-01-13 22:13:19 +1300453 large physical address extension on 32bit SoCs.
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900454
Johan Jonker02e3e062023-03-13 01:33:23 +0100455config FDT_64BIT
456 bool "64bit fdt address support"
457 help
458 Say Y here to support 64bit fdt addresses.
459 This can be used not only for 64bit SoCs, but also
460 for large address extensions on 32bit SoCs.
461
Simon Glassf69c0092020-07-19 13:55:52 -0600462config HAS_ROM
463 bool
464 select BINMAN
465 help
466 Enables building of a u-boot.rom target. This collects U-Boot and
467 any necessary binary blobs.
468
Stefan Roesee915cbc2019-04-03 15:24:50 +0200469config SPL_IMAGE
470 string "SPL image used in the combined SPL+U-Boot image"
471 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
472 default "spl/u-boot-spl.bin"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500473 depends on SPL
Stefan Roesee915cbc2019-04-03 15:24:50 +0200474 help
475 Select the SPL build target that shall be generated by the SPL
476 build process (default spl/u-boot-spl.bin). This image will be
477 used to generate a combined image with SPL and main U-Boot
478 proper as one single image.
479
Alper Nebi Yasak2beb0f42022-01-29 18:25:30 +0300480config REMAKE_ELF
481 bool "Recreate an ELF image from raw U-Boot binary"
482 help
483 Enable this to recreate an ELF image (u-boot.elf) from the raw
484 U-Boot binary (u-boot.bin), which may already have been statically
485 relocated and may already have a device-tree appended to it.
486
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530487config BUILD_TARGET
488 string "Build target special images"
Hai Pham9046b5f2023-02-28 22:22:03 +0100489 default "u-boot-elf.srec" if RCAR_64
Marek Vasut9a976c12023-02-28 07:22:21 +0100490 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
491 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
492 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
493 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreen8fb280c2019-03-20 13:15:21 -0700494 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
495 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glass6a50cd12020-07-19 13:56:12 -0600496 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland3be2d9f2023-01-22 11:23:51 -0600497 RISCV || ARCH_ZYNQMP)
Pali RohĂĄra4a4f952022-12-29 02:39:19 +0100498 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530499 help
500 Some SoCs need special image types (e.g. U-Boot binary
501 with a special header) as build targets. By defining
502 CONFIG_BUILD_TARGET in the SoC / board header, this
503 special image will be automatically built upon calling
504 make / buildman.
505
Tom Rini876df342022-03-30 18:07:11 -0400506config HAS_BOARD_SIZE_LIMIT
507 bool "Define a maximum size for the U-Boot image"
Marek Vasutb42de382024-02-11 18:34:29 +0100508 default y if RCAR_32 || RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400509 help
510 In some cases, we need to enforce a hard limit on how big the U-Boot
511 image itself can be.
512
513config BOARD_SIZE_LIMIT
514 int "Maximum size of the U-Boot image in bytes"
Marek Vasutb42de382024-02-11 18:34:29 +0100515 default 524288 if RCAR_32
Hai Pham9046b5f2023-02-28 22:22:03 +0100516 default 1048576 if RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400517 depends on HAS_BOARD_SIZE_LIMIT
518 help
519 Maximum size of the U-Boot image. When defined, the build system
520 checks that the actual size does not exceed it. This does not
521 include SPL nor TPL, on platforms that use that functionality, they
522 have a separate option to restict size.
523
Tom Rinie478f702019-06-02 08:57:32 -0400524config SYS_CUSTOM_LDSCRIPT
525 bool "Use a custom location for the U-Boot linker script"
526 help
527 Normally when linking U-Boot we will look in the board directory,
528 the CPU directory and finally the "cpu" directory of the architecture
529 for the ile "u-boot.lds" and use that as our linker. However, in
530 some cases we need to provide a different linker script. To do so,
531 enable this option and then provide the location under
532 CONFIG_SYS_LDSCRIPT.
533
534config SYS_LDSCRIPT
535 depends on SYS_CUSTOM_LDSCRIPT
536 string "Custom ldscript location"
537 help
538 Path within the source tree to the linker script to use for the
539 main U-Boot binary.
540
Tom Rini0997ee02021-08-23 10:25:31 -0400541config SYS_LOAD_ADDR
542 hex "Address in memory to use by default"
543 default 0x01000000 if ARCH_SOCFPGA
544 default 0x02000000 if PPC || X86
Icenowy Zheng711fab32022-01-29 10:23:09 -0500545 default 0x81000000 if MACH_SUNIV
Tom Rini0997ee02021-08-23 10:25:31 -0400546 default 0x22000000 if MACH_SUN9I
Icenowy Zheng711fab32022-01-29 10:23:09 -0500547 default 0x42000000 if ARCH_SUNXI
Tom Rini0997ee02021-08-23 10:25:31 -0400548 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
549 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
550 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
551 default 0x80800000 if ARCH_MX7
552 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
553 help
554 Address in memory to use as the default safe load address.
555
Simon Goldschmidt9c055112019-10-22 21:29:46 +0200556config ERR_PTR_OFFSET
557 hex
558 default 0x0
559 help
560 Some U-Boot pointers have redundant information, so we can use a
561 scheme where we can return either an error code or a pointer with the
562 same return value. The default implementation just casts the pointer
563 to a number, however, this may fail on platforms where the end of the
564 address range is used for valid pointers (e.g. 0xffffff00 is a valid
565 heap pointer in socfpga SPL).
566 For such platforms, this value provides an upper range of those error
567 pointer values - up to 'MAX_ERRNO' bytes below this value must be
568 unused/invalid addresses.
569
Michal Simek5d458a12020-03-30 13:58:59 +0200570config PLATFORM_ELFENTRY
571 string
572 default "__start" if MIPS
573 default "_start"
574
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200575config STACK_SIZE
576 hex "Define max stack size that can be used by U-Boot"
Michal Simek2e53eb22022-09-19 14:21:02 +0200577 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200578 default 0x200000 if MICROBLAZE
579 default 0x1000000
580 help
581 Define Max stack size that can be used by U-Boot. This value is used
582 by the UEFI sub-system. On some boards initrd_high is calculated as
583 base stack pointer minus this stack size.
584
Tom Rini5c1e7272022-04-06 10:33:32 -0400585config SYS_MEM_TOP_HIDE
586 hex "Exclude some memory from U-Boot / OS information"
587 default 0x0
588 help
589 If set, this specified memory area will get subtracted from the top
590 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
591 gd->ram_size the OS / next stage should gets passed the now
592 "corrected" memory size and won't touch it either.
593 WARNING: Please make sure that this value is a multiple of the OS
594 page size.
595
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300596config SYS_HAS_SRAM
597 bool
598 default y if TARGET_PIC32MZDASK
599 default y if TARGET_DEVKIT8000
600 default y if TARGET_TRICORDER
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300601 help
602 Enable this to allow support for the on board SRAM.
603 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
604 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
605
Ovidiu Panait62749212020-07-24 14:12:10 +0300606config SYS_SRAM_BASE
607 hex
608 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait0a2ef262020-07-24 14:12:12 +0300609 default 0x40200000 if TARGET_DEVKIT8000
610 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panait62749212020-07-24 14:12:10 +0300611 default 0x0
612
Ovidiu Panaitcb229962020-07-24 14:12:11 +0300613config SYS_SRAM_SIZE
614 hex
615 default 0x00080000 if TARGET_PIC32MZDASK
616 default 0x10000 if TARGET_DEVKIT8000
617 default 0x10000 if TARGET_TRICORDER
618 default 0x0
619
Tom Rini7f184322022-10-28 20:27:07 -0400620config SYS_MONITOR_LEN
621 int "Maximum size in bytes reserved for U-Boot in memory"
622 default 1048576 if X86
Paul Kocialkowski656b2392024-07-28 22:24:57 +0200623 default 262144 if OMAP34XX
Andre Przywara5b3c3372022-11-19 16:10:59 +0000624 default 786432 if ARCH_SUNXI
Tom Rini7f184322022-10-28 20:27:07 -0400625 default 0
626 help
627 Size of memory reserved for monitor code, used to determine
628 _at_compile_time_ (!) if the environment is embedded within the
629 U-Boot image, or in a separate flash sector, among other uses where
630 we need to set a maximum size of the U-Boot binary itself that will
631 be loaded.
632
Ashok Reddy Soma1e6f9962022-01-17 10:16:50 +0100633config MP
634 bool "Support for multiprocessor"
635 help
636 This provides an option to bringup different processors
637 in multiprocessor cases.
638
Simon Glassf7b09e22023-09-14 10:55:54 -0600639config HAVE_TEXT_BASE
640 bool
641 depends on !NIOS2 && !XTENSA
642 depends on !EFI_APP
643 default y
644
645config TEXT_BASE
646 depends on HAVE_TEXT_BASE
647 default 0x0 if POSITION_INDEPENDENT
648 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
649 default 0x81700000 if MACH_SUNIV
650 default 0x2a000000 if MACH_SUN9I
651 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
652 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
653 hex "Text Base"
654 help
Jesse Taube93ee5c82023-08-24 21:59:48 -0400655 The address in memory that U-Boot will be copied and executed from
656 initially.
657
658config HAVE_SYS_UBOOT_START
659 bool "Use custom U-Boot Start"
660 depends on HAVE_TEXT_BASE
661 help
662 By default, the address in memory that U-Boot will be copied from
663 (TEXT_BASE) and the entry point are the same. Select this to start the
664 execution of U-Boot from a different address.
665 This may be required if a header or vector table needs to be copied
666 but not executed.
667
668config SYS_UBOOT_START
669 hex
670 depends on HAVE_TEXT_BASE
671 default TEXT_BASE
672 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
673 help
674 If TEXT_BASE differs from the start of execution, this sets the
675 address in memory that U-Boot will start execution from initially.
Simon Glassf7b09e22023-09-14 10:55:54 -0600676
677config HAVE_SYS_MONITOR_BASE
678 bool
679 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
680 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
681 depends on !EFI_APP
682 default y
683
684config SYS_MONITOR_BASE
685 depends on HAVE_SYS_MONITOR_BASE
686 hex "Physical start address of boot monitor code"
687 default TEXT_BASE
688 help
689 The physical start address of boot monitor code (which is the same as
690 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
691 when booting from flash.
692
693config SPL_SYS_MONITOR_BASE
694 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
695 hex "Physical start address of SPL monitor code"
696 default SPL_TEXT_BASE
697
698config TPL_SYS_MONITOR_BASE
699 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
700 hex "Physical start address of TPL monitor code"
701
702config DYNAMIC_SYS_CLK_FREQ
703 bool "Determine CPU clock frequency at run-time"
704 help
705 Implement a get_board_sys_clk function that will determine the CPU
706 clock frequency at run time, rather than define it statically.
707
708config SYS_CLK_FREQ
709 depends on !DYNAMIC_SYS_CLK_FREQ
710 int "CPU clock frequency"
711 default 125000000 if ARCH_LS1012A
712 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
713 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
714 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
715 default 66660000 if ARCH_T2080
716 default 33333333 if RCAR_GEN3
717 default 24000000 if ARCH_EXYNOS
718 default 20000000 if RCAR_GEN2
719 default 0
720 help
721 A static value for the CPU frequency. Note that if not required
722 for a given SoC, this can be left at 0.
Masahiro Yamada9eeddf22014-11-26 18:42:31 +0900723
Greg Malysa547f54c2024-03-19 22:16:07 -0400724config HAS_LDR
725 bool
726 help
727 Enables building .ldr targets for U-Boot and SPL. This does not
728 automatically build any additional targets with make or buildman.
729
730config LDR_CPU
731 string "CPU name to be passed to LDR utility."
732 depends on HAS_LDR
733 help
734 Set the CPU name for the -T parameter in the LDR utility. This is
735 generally used on processors from Analog Devices, but may be also
736 be useful for other vendors.
737
Emmanuel Vadotaa020992017-01-31 12:17:04 +0100738source "api/Kconfig"
739
Simon Glass06c10352023-09-14 10:55:40 -0600740endmenu # General setup
741
Simon Glass91944df2021-10-14 12:47:54 -0600742source "boot/Kconfig"
743
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900744source "common/Kconfig"
745
Simon Glass29499a02016-01-17 20:53:51 -0700746source "cmd/Kconfig"
747
Patrick Delaunaydc280602017-01-27 11:00:35 +0100748source "disk/Kconfig"
749
Masahiro Yamada9fadbc82014-09-22 19:59:05 +0900750source "dts/Kconfig"
751
Simon Glass547cb402017-08-03 12:21:49 -0600752source "env/Kconfig"
753
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900754source "net/Kconfig"
755
756source "drivers/Kconfig"
757
758source "fs/Kconfig"
759
760source "lib/Kconfig"
Simon Glass9dd430d2015-02-05 21:41:37 -0700761
762source "test/Kconfig"
Simon Glass31b24b42020-09-10 20:21:27 -0600763
764source "tools/Kconfig"