blob: 068da61d84561b2a4130329cf600f0eb146354d6 [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
239 default y if TFABOOT
240 help
241 Typically, we use an initial stack pointer address that is calculated
Tom Rini6a5dccc2022-11-16 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 Rini4ddbade2022-05-25 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 Glass72cc5382022-10-20 18:22:39 -0600252 default TEXT_BASE if TFABOOT
Tom Rini4ddbade2022-05-25 12:16:03 -0400253
Simon Glass838723b2015-02-11 16:32:59 -0700254config SYS_MALLOC_F
255 bool "Enable malloc() pool before relocation"
Masahiro Yamadac6988242015-03-19 19:42:55 +0900256 default y if DM
Simon Glassb24fdd42018-12-03 04:37:17 -0700257
Simon Glass838723b2015-02-11 16:32:59 -0700258 help
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400259 Before relocation, memory is very limited on many platforms. Still,
Simon Glass838723b2015-02-11 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 Rini324cf142022-04-07 12:33:23 -0400267 default 0x400 if M68K || PPC || ROCKCHIP_PX30 || ROCKCHIP_RK3036 || \
268 ROCKCHIP_RK3308 || ROCKCHIP_RV1108
269 default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
270 default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
271 ROCKCHIP_RK322X || X86
Tom Riniae683732022-04-07 12:33:24 -0400272 default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
Tom Rini324cf142022-04-07 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 Fan7e43a2e2022-09-15 09:38:18 +0800277 default 0x10000 if ARCH_IMX8 || ARCH_IMX8M
Tom Rini324cf142022-04-07 12:33:23 -0400278 default 0x2000
Simon Glass838723b2015-02-11 16:32:59 -0700279 help
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400280 Before relocation, memory is very limited on many platforms. Still,
Simon Glass838723b2015-02-11 16:32:59 -0700281 we can provide a small malloc() pool if needed. Driver model in
282 particular needs this to operate, so that it can allocate the
283 initial serial device and any others that are needed.
284
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530285config SYS_MALLOC_LEN
286 hex "Define memory for Dynamic allocation"
Tom Rini4c538442022-04-14 11:34:47 -0400287 default 0x4000000 if SANDBOX
Tom Rinie065fb12021-08-28 21:34:49 -0400288 default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
Tom Rinie065fb12021-08-28 21:34:49 -0400289 default 0x200000 if ARCH_BMIPS || X86
Andre Przywaraa2860fb2022-07-03 00:47:20 +0100290 default 0x4020000 if SUNXI_MINIMUM_DRAM_MB >= 256
291 default 0x220000 if SUNXI_MINIMUM_DRAM_MB >= 64
292 default 0x120000 if SUNXI_MINIMUM_DRAM_MB >= 32
Tom Rinie065fb12021-08-28 21:34:49 -0400293 default 0x400000
Siva Durga Prasad Paladugu9adb5262018-07-20 15:11:38 +0530294 help
295 This defines memory to be allocated for Dynamic allocation
296 TODO: Use for other architectures
297
Simon Glass2f7409a2023-09-26 08:14:24 -0600298config SPL_SYS_MALLOC_F
299 bool "Enable malloc() pool in SPL"
300 depends on SPL_FRAMEWORK && SYS_MALLOC_F && SPL
301 default y
302 help
303 In SPL memory is very limited on many platforms. Still,
304 we can provide a small malloc() pool if needed. Driver model in
305 particular needs this to operate, so that it can allocate the
306 initial serial device and any others that are needed.
307
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800308config SPL_SYS_MALLOC_F_LEN
Simon Glassbbfdaf32021-01-21 13:57:06 -0700309 hex "Size of malloc() pool in SPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600310 depends on SPL_SYS_MALLOC_F
Marek Vasute39fa7d2018-10-03 12:44:13 +0200311 default 0x2800 if RCAR_GEN3
Peng Fan7e43a2e2022-09-15 09:38:18 +0800312 default 0x2000 if IMX8MQ
Michal Simek0601c1b2018-07-24 14:47:43 +0200313 default SYS_MALLOC_F_LEN
314 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600315 Sets the size of the malloc() pool in SPL. This is used for
316 driver model and other features, which must allocate memory for
317 data structures.
Philipp Tomsich10139352017-07-28 11:06:03 +0200318
Simon Glass67e3fca2023-09-26 08:14:16 -0600319 It is possible to enable CFG_SPL_SYS_MALLOC_START to start a new
Simon Glassbbfdaf32021-01-21 13:57:06 -0700320 malloc() region in SDRAM once it is inited.
321
Simon Glass2f7409a2023-09-26 08:14:24 -0600322config TPL_SYS_MALLOC_F
323 bool "Enable malloc() pool in SPL"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500324 depends on SYS_MALLOC_F && TPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600325 default y if SPL_SYS_MALLOC_F
Michal Simek0601c1b2018-07-24 14:47:43 +0200326 help
Simon Glassbbfdaf32021-01-21 13:57:06 -0700327 In TPL memory is very limited on many platforms. Still,
Michal Simek0601c1b2018-07-24 14:47:43 +0200328 we can provide a small malloc() pool if needed. Driver model in
329 particular needs this to operate, so that it can allocate the
330 initial serial device and any others that are needed.
Andy Yan1fa20e4d2017-07-24 17:43:34 +0800331
Simon Glass2f7409a2023-09-26 08:14:24 -0600332config TPL_SYS_MALLOC_F_LEN
333 hex "Size of malloc() pool in TPL"
Simon Glassadad2d02023-09-26 08:14:27 -0600334 depends on TPL_SYS_MALLOC_F
Simon Glass2f7409a2023-09-26 08:14:24 -0600335 default SPL_SYS_MALLOC_F_LEN
336 help
337 Sets the size of the malloc() pool in TPL. This is used for
338 driver model and other features, which must allocate memory for
339 data structures.
340
Sean Anderson3b004842022-03-23 14:04:48 -0400341config VALGRIND
342 bool "Inform valgrind about memory allocations"
Sean Anderson39866b62022-05-27 10:03:00 -0400343 depends on !RISCV
Sean Anderson3b004842022-03-23 14:04:48 -0400344 help
345 Valgrind is an instrumentation framework for building dynamic analysis
346 tools. In particular, it may be used to detect memory management bugs
347 in U-Boot. It relies on knowing when heap blocks are allocated in
348 order to give accurate results. This happens automatically for
349 standard allocator functions provided by the host OS. However, this
350 doesn't automatically happen for U-Boot's malloc implementation.
351
352 Enable this option to annotate U-Boot's malloc implementation so that
353 it can be handled accurately by Valgrind. If you aren't planning on
354 using valgrind to debug U-Boot, say 'n'.
355
Simon Glass2f7409a2023-09-26 08:14:24 -0600356config VPL_SYS_MALLOC_F
357 bool "Enable malloc() pool in VPL"
Simon Glasse7ca7da2022-04-30 00:56:53 -0600358 depends on SYS_MALLOC_F && VPL
Simon Glass2f7409a2023-09-26 08:14:24 -0600359 default y if SPL_SYS_MALLOC_F
Simon Glasse7ca7da2022-04-30 00:56:53 -0600360 help
Simon Glass2f7409a2023-09-26 08:14:24 -0600361 In VPL memory is very limited on many platforms. Still,
Simon Glasse7ca7da2022-04-30 00:56:53 -0600362 we can provide a small malloc() pool if needed. Driver model in
363 particular needs this to operate, so that it can allocate the
364 initial serial device and any others that are needed.
365
Simon Glass2f7409a2023-09-26 08:14:24 -0600366config VPL_SYS_MALLOC_F_LEN
367 hex "Size of malloc() pool in VPL before relocation"
Simon Glassadad2d02023-09-26 08:14:27 -0600368 depends on VPL_SYS_MALLOC_F
369 default SPL_SYS_MALLOC_F_LEN
Simon Glass2f7409a2023-09-26 08:14:24 -0600370 help
371 Sets the size of the malloc() pool in VPL. This is used for
372 driver model and other features, which must allocate memory for
373 data structures.
374
Tom Rinia50d5b52014-11-14 09:34:29 +0100375menuconfig EXPERT
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100376 bool "Configure standard U-Boot features (expert users)"
377 default y
378 help
379 This option allows certain base U-Boot options and settings
380 to be disabled or tweaked. This is for specialized
381 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400382 Use this only if you really know what you are doing.
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100383
384if EXPERT
385 config SYS_MALLOC_CLEAR_ON_INIT
386 bool "Init with zeros the memory reserved for malloc (slow)"
387 default y
388 help
389 This setting is enabled by default. The reserved malloc
390 memory is initialized with zeros, so first malloc calls
391 will return the pointer to the zeroed memory. But this
392 slows the boot time.
Tom Rinia50d5b52014-11-14 09:34:29 +0100393
Przemyslaw Marczak88436782015-03-04 14:01:24 +0100394 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
395 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
396 Then the boot time can be significantly reduced.
397 Warning:
398 When disabling this, please check if malloc calls, maybe
Robert P. J. Day2f845be2016-04-16 05:53:07 -0400399 should be replaced by calloc - if one expects zeroed memory.
Simon Glass86a64492016-06-30 10:52:20 -0600400
Shengyu Qu9b676302023-08-25 00:25:18 +0800401config SPL_SYS_MALLOC_CLEAR_ON_INIT
402 bool "Init with zeros the memory reserved for malloc (slow) in SPL"
403 depends on SPL
404 default SYS_MALLOC_CLEAR_ON_INIT
405 help
406 Same as SYS_MALLOC_CLEAR_ON_INIT, but for SPL. It's possible to
407 Enable it without SYS_MALLOC_CLEAR_ON_INIT. It's useful for boards
408 that must have particular memory regions zero'ed before first use.
409 If SYS_SPL_MALLOC_START is configured to be in such region, this
410 option should be enabled.
411
Marek Bykowskib4032a72020-04-29 18:23:07 +0200412config SYS_MALLOC_DEFAULT_TO_INIT
413 bool "Default malloc to init while reserving the memory for it"
Marek Bykowskib4032a72020-04-29 18:23:07 +0200414 help
415 It may happen that one needs to move the dynamic allocation
416 from one to another memory range, eg. when moving the malloc
417 from the limited static to a potentially large dynamic (DDR)
418 memory.
419
420 If so then on top of setting the updated memory aside one
421 needs to bring the malloc init.
422
423 If such a scenario is sought choose yes.
424
Simon Glass86a64492016-06-30 10:52:20 -0600425config TOOLS_DEBUG
426 bool "Enable debug information for tools"
427 help
428 Enable generation of debug information for tools such as mkimage.
429 This can be used for debugging purposes. With debug information
430 it is possible to set breakpoints on particular lines, single-step
431 debug through the source code, etc.
432
Robert P. J. Daye4829f32017-01-02 16:32:13 -0500433endif # EXPERT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900434
435config PHYS_64BIT
436 bool "64bit physical address support"
Johan Jonker02e3e062023-03-13 01:33:23 +0100437 select FDT_64BIT
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900438 help
439 Say Y here to support 64bit physical memory address.
440 This can be used not only for 64bit SoCs, but also for
Chris Packham2b52a242019-01-13 22:13:19 +1300441 large physical address extension on 32bit SoCs.
Masahiro Yamada653e9fe2016-07-25 19:56:03 +0900442
Johan Jonker02e3e062023-03-13 01:33:23 +0100443config FDT_64BIT
444 bool "64bit fdt address support"
445 help
446 Say Y here to support 64bit fdt addresses.
447 This can be used not only for 64bit SoCs, but also
448 for large address extensions on 32bit SoCs.
449
Simon Glassf69c0092020-07-19 13:55:52 -0600450config HAS_ROM
451 bool
452 select BINMAN
453 help
454 Enables building of a u-boot.rom target. This collects U-Boot and
455 any necessary binary blobs.
456
Stefan Roesee915cbc2019-04-03 15:24:50 +0200457config SPL_IMAGE
458 string "SPL image used in the combined SPL+U-Boot image"
459 default "spl/boot.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
460 default "spl/u-boot-spl.bin"
Adam Ford43a1e2d2019-08-13 14:32:30 -0500461 depends on SPL
Stefan Roesee915cbc2019-04-03 15:24:50 +0200462 help
463 Select the SPL build target that shall be generated by the SPL
464 build process (default spl/u-boot-spl.bin). This image will be
465 used to generate a combined image with SPL and main U-Boot
466 proper as one single image.
467
Alper Nebi Yasak2beb0f42022-01-29 18:25:30 +0300468config REMAKE_ELF
469 bool "Recreate an ELF image from raw U-Boot binary"
470 help
471 Enable this to recreate an ELF image (u-boot.elf) from the raw
472 U-Boot binary (u-boot.bin), which may already have been statically
473 relocated and may already have a device-tree appended to it.
474
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530475config BUILD_TARGET
476 string "Build target special images"
Hai Pham9046b5f2023-02-28 22:22:03 +0100477 default "u-boot-elf.srec" if RCAR_64
Marek Vasut9a976c12023-02-28 07:22:21 +0100478 default "u-boot-with-spl.bin" if ARCH_AT91 && SPL_NAND_SUPPORT
479 default "u-boot-with-spl.bin" if MPC85xx && !E500MC && !E5500 && !E6500 && SPL
480 default "u-boot-with-spl.imx" if ARCH_MX6 && SPL
481 default "u-boot-with-spl.kwb" if ARMADA_32BIT && SPL
Dalon Westergreen8fb280c2019-03-20 13:15:21 -0700482 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_ARRIA10
483 default "u-boot-with-spl.sfp" if TARGET_SOCFPGA_GEN5
Simon Glass6a50cd12020-07-19 13:56:12 -0600484 default "u-boot.itb" if !BINMAN && SPL_LOAD_FIT && (ARCH_ROCKCHIP || \
Samuel Holland3be2d9f2023-01-22 11:23:51 -0600485 RISCV || ARCH_ZYNQMP)
Pali RohĂĄra4a4f952022-12-29 02:39:19 +0100486 default "u-boot.kwb" if (ARCH_KIRKWOOD || ARMADA_32BIT) && !SPL
Jagan Tekiaee9ed32019-01-18 12:52:49 +0530487 help
488 Some SoCs need special image types (e.g. U-Boot binary
489 with a special header) as build targets. By defining
490 CONFIG_BUILD_TARGET in the SoC / board header, this
491 special image will be automatically built upon calling
492 make / buildman.
493
Tom Rini876df342022-03-30 18:07:11 -0400494config HAS_BOARD_SIZE_LIMIT
495 bool "Define a maximum size for the U-Boot image"
Hai Pham9046b5f2023-02-28 22:22:03 +0100496 default y if RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400497 help
498 In some cases, we need to enforce a hard limit on how big the U-Boot
499 image itself can be.
500
501config BOARD_SIZE_LIMIT
502 int "Maximum size of the U-Boot image in bytes"
Hai Pham9046b5f2023-02-28 22:22:03 +0100503 default 1048576 if RCAR_64
Tom Rini876df342022-03-30 18:07:11 -0400504 depends on HAS_BOARD_SIZE_LIMIT
505 help
506 Maximum size of the U-Boot image. When defined, the build system
507 checks that the actual size does not exceed it. This does not
508 include SPL nor TPL, on platforms that use that functionality, they
509 have a separate option to restict size.
510
Tom Rinie478f702019-06-02 08:57:32 -0400511config SYS_CUSTOM_LDSCRIPT
512 bool "Use a custom location for the U-Boot linker script"
513 help
514 Normally when linking U-Boot we will look in the board directory,
515 the CPU directory and finally the "cpu" directory of the architecture
516 for the ile "u-boot.lds" and use that as our linker. However, in
517 some cases we need to provide a different linker script. To do so,
518 enable this option and then provide the location under
519 CONFIG_SYS_LDSCRIPT.
520
521config SYS_LDSCRIPT
522 depends on SYS_CUSTOM_LDSCRIPT
523 string "Custom ldscript location"
524 help
525 Path within the source tree to the linker script to use for the
526 main U-Boot binary.
527
Tom Rini0997ee02021-08-23 10:25:31 -0400528config SYS_LOAD_ADDR
529 hex "Address in memory to use by default"
530 default 0x01000000 if ARCH_SOCFPGA
531 default 0x02000000 if PPC || X86
Icenowy Zheng711fab32022-01-29 10:23:09 -0500532 default 0x81000000 if MACH_SUNIV
Tom Rini0997ee02021-08-23 10:25:31 -0400533 default 0x22000000 if MACH_SUN9I
Icenowy Zheng711fab32022-01-29 10:23:09 -0500534 default 0x42000000 if ARCH_SUNXI
Tom Rini0997ee02021-08-23 10:25:31 -0400535 default 0x82000000 if ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_K3
536 default 0x82000000 if ARCH_MX6 && (MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
537 default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL || MX6SX || MX6UL || MX6ULL)
538 default 0x80800000 if ARCH_MX7
539 default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
540 help
541 Address in memory to use as the default safe load address.
542
Simon Goldschmidt9c055112019-10-22 21:29:46 +0200543config ERR_PTR_OFFSET
544 hex
545 default 0x0
546 help
547 Some U-Boot pointers have redundant information, so we can use a
548 scheme where we can return either an error code or a pointer with the
549 same return value. The default implementation just casts the pointer
550 to a number, however, this may fail on platforms where the end of the
551 address range is used for valid pointers (e.g. 0xffffff00 is a valid
552 heap pointer in socfpga SPL).
553 For such platforms, this value provides an upper range of those error
554 pointer values - up to 'MAX_ERRNO' bytes below this value must be
555 unused/invalid addresses.
556
Michal Simek5d458a12020-03-30 13:58:59 +0200557config PLATFORM_ELFENTRY
558 string
559 default "__start" if MIPS
560 default "_start"
561
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200562config STACK_SIZE
563 hex "Define max stack size that can be used by U-Boot"
Michal Simek2e53eb22022-09-19 14:21:02 +0200564 default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
Heinrich Schuchardtc6dcbe12020-07-29 12:37:35 +0200565 default 0x200000 if MICROBLAZE
566 default 0x1000000
567 help
568 Define Max stack size that can be used by U-Boot. This value is used
569 by the UEFI sub-system. On some boards initrd_high is calculated as
570 base stack pointer minus this stack size.
571
Tom Rini5c1e7272022-04-06 10:33:32 -0400572config SYS_MEM_TOP_HIDE
573 hex "Exclude some memory from U-Boot / OS information"
574 default 0x0
575 help
576 If set, this specified memory area will get subtracted from the top
577 (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
578 gd->ram_size the OS / next stage should gets passed the now
579 "corrected" memory size and won't touch it either.
580 WARNING: Please make sure that this value is a multiple of the OS
581 page size.
582
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300583config SYS_HAS_SRAM
584 bool
585 default y if TARGET_PIC32MZDASK
586 default y if TARGET_DEVKIT8000
587 default y if TARGET_TRICORDER
Ovidiu Panait2cdfed22020-07-24 14:12:09 +0300588 help
589 Enable this to allow support for the on board SRAM.
590 SRAM base address is controlled by CONFIG_SYS_SRAM_BASE.
591 SRAM size is controlled by CONFIG_SYS_SRAM_SIZE.
592
Ovidiu Panait62749212020-07-24 14:12:10 +0300593config SYS_SRAM_BASE
594 hex
595 default 0x80000000 if TARGET_PIC32MZDASK
Ovidiu Panait0a2ef262020-07-24 14:12:12 +0300596 default 0x40200000 if TARGET_DEVKIT8000
597 default 0x40200000 if TARGET_TRICORDER
Ovidiu Panait62749212020-07-24 14:12:10 +0300598 default 0x0
599
Ovidiu Panaitcb229962020-07-24 14:12:11 +0300600config SYS_SRAM_SIZE
601 hex
602 default 0x00080000 if TARGET_PIC32MZDASK
603 default 0x10000 if TARGET_DEVKIT8000
604 default 0x10000 if TARGET_TRICORDER
605 default 0x0
606
Tom Rini7f184322022-10-28 20:27:07 -0400607config SYS_MONITOR_LEN
608 int "Maximum size in bytes reserved for U-Boot in memory"
609 default 1048576 if X86
Andre Przywara5b3c3372022-11-19 16:10:59 +0000610 default 786432 if ARCH_SUNXI
Tom Rini7f184322022-10-28 20:27:07 -0400611 default 0
612 help
613 Size of memory reserved for monitor code, used to determine
614 _at_compile_time_ (!) if the environment is embedded within the
615 U-Boot image, or in a separate flash sector, among other uses where
616 we need to set a maximum size of the U-Boot binary itself that will
617 be loaded.
618
Ashok Reddy Soma1e6f9962022-01-17 10:16:50 +0100619config MP
620 bool "Support for multiprocessor"
621 help
622 This provides an option to bringup different processors
623 in multiprocessor cases.
624
Simon Glassf7b09e22023-09-14 10:55:54 -0600625config HAVE_TEXT_BASE
626 bool
627 depends on !NIOS2 && !XTENSA
628 depends on !EFI_APP
629 default y
630
631config TEXT_BASE
632 depends on HAVE_TEXT_BASE
633 default 0x0 if POSITION_INDEPENDENT
634 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
635 default 0x81700000 if MACH_SUNIV
636 default 0x2a000000 if MACH_SUN9I
637 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
638 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
639 hex "Text Base"
640 help
Jesse Taube93ee5c82023-08-24 21:59:48 -0400641 The address in memory that U-Boot will be copied and executed from
642 initially.
643
644config HAVE_SYS_UBOOT_START
645 bool "Use custom U-Boot Start"
646 depends on HAVE_TEXT_BASE
647 help
648 By default, the address in memory that U-Boot will be copied from
649 (TEXT_BASE) and the entry point are the same. Select this to start the
650 execution of U-Boot from a different address.
651 This may be required if a header or vector table needs to be copied
652 but not executed.
653
654config SYS_UBOOT_START
655 hex
656 depends on HAVE_TEXT_BASE
657 default TEXT_BASE
658 prompt "U-Boot entry" if HAVE_SYS_UBOOT_START
659 help
660 If TEXT_BASE differs from the start of execution, this sets the
661 address in memory that U-Boot will start execution from initially.
Simon Glassf7b09e22023-09-14 10:55:54 -0600662
663config HAVE_SYS_MONITOR_BASE
664 bool
665 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
666 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
667 depends on !EFI_APP
668 default y
669
670config SYS_MONITOR_BASE
671 depends on HAVE_SYS_MONITOR_BASE
672 hex "Physical start address of boot monitor code"
673 default TEXT_BASE
674 help
675 The physical start address of boot monitor code (which is the same as
676 CONFIG_TEXT_BASE when linking) and the same as CFG_SYS_FLASH_BASE
677 when booting from flash.
678
679config SPL_SYS_MONITOR_BASE
680 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
681 hex "Physical start address of SPL monitor code"
682 default SPL_TEXT_BASE
683
684config TPL_SYS_MONITOR_BASE
685 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
686 hex "Physical start address of TPL monitor code"
687
688config DYNAMIC_SYS_CLK_FREQ
689 bool "Determine CPU clock frequency at run-time"
690 help
691 Implement a get_board_sys_clk function that will determine the CPU
692 clock frequency at run time, rather than define it statically.
693
694config SYS_CLK_FREQ
695 depends on !DYNAMIC_SYS_CLK_FREQ
696 int "CPU clock frequency"
697 default 125000000 if ARCH_LS1012A
698 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
699 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
700 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
701 default 66660000 if ARCH_T2080
702 default 33333333 if RCAR_GEN3
703 default 24000000 if ARCH_EXYNOS
704 default 20000000 if RCAR_GEN2
705 default 0
706 help
707 A static value for the CPU frequency. Note that if not required
708 for a given SoC, this can be left at 0.
Masahiro Yamada9eeddf22014-11-26 18:42:31 +0900709
Emmanuel Vadotaa020992017-01-31 12:17:04 +0100710source "api/Kconfig"
711
Simon Glass06c10352023-09-14 10:55:40 -0600712endmenu # General setup
713
Simon Glass91944df2021-10-14 12:47:54 -0600714source "boot/Kconfig"
715
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900716source "common/Kconfig"
717
Simon Glass29499a02016-01-17 20:53:51 -0700718source "cmd/Kconfig"
719
Patrick Delaunaydc280602017-01-27 11:00:35 +0100720source "disk/Kconfig"
721
Masahiro Yamada9fadbc82014-09-22 19:59:05 +0900722source "dts/Kconfig"
723
Simon Glass547cb402017-08-03 12:21:49 -0600724source "env/Kconfig"
725
Masahiro Yamadaf3e12b72014-09-16 16:32:58 +0900726source "net/Kconfig"
727
728source "drivers/Kconfig"
729
730source "fs/Kconfig"
731
732source "lib/Kconfig"
Simon Glass9dd430d2015-02-05 21:41:37 -0700733
734source "test/Kconfig"
Simon Glass31b24b42020-09-10 20:21:27 -0600735
736source "tools/Kconfig"