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Thomas Gleixnerec8f24b2019-05-19 13:07:45 +01001# SPDX-License-Identifier: GPL-2.0-only
Michal Simek575ca282009-03-27 14:25:50 +01002config MICROBLAZE
3 def_bool y
Yury Norov942fa982018-05-16 11:18:49 +03004 select ARCH_32BIT_OFF_T
Christoph Hellwig17c46a62018-07-31 13:39:29 +02005 select ARCH_NO_SWAP
Christoph Hellwigaef0f782019-06-13 09:08:57 +02006 select ARCH_HAS_BINFMT_FLAT if !MMU
Christoph Hellwigd3b9f652019-08-14 16:03:47 +02007 select ARCH_HAS_DMA_PREP_COHERENT
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Christoph Hellwig5411ad22018-07-19 05:54:39 -07009 select ARCH_HAS_SYNC_DMA_FOR_CPU
10 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
Christoph Hellwigfa7e2242020-02-21 15:55:43 -080011 select ARCH_HAS_DMA_SET_UNCACHED if !MMU
Mark Salter355f65a2013-10-07 22:12:28 -040012 select ARCH_MIGHT_HAVE_PC_PARPORT
Will Deaconc1d7e012012-07-30 14:42:46 -070013 select ARCH_WANT_IPC_PARSE_VERSION
Shile Zhang10916702019-12-04 08:46:31 +080014 select BUILDTIME_TABLE_SORT
Daniel Lezcanobb0eb052017-05-26 19:34:11 +020015 select TIMER_OF
Michal Simek25213382014-04-07 12:51:44 +020016 select CLONE_BACKWARDS3
17 select COMMON_CLK
Christoph Hellwig04e35432019-08-14 16:03:48 +020018 select DMA_DIRECT_REMAP if MMU
Michal Simek25213382014-04-07 12:51:44 +020019 select GENERIC_ATOMIC64
20 select GENERIC_CLOCKEVENTS
21 select GENERIC_CPU_DEVICES
22 select GENERIC_IDLE_POLL_SETUP
Thomas Gleixnerb6e31622011-01-19 20:35:05 +010023 select GENERIC_IRQ_PROBE
Thomas Gleixner9d61c18b2011-03-24 14:55:52 +010024 select GENERIC_IRQ_SHOW
Michael S. Tsirkin1b34d162011-11-24 21:06:41 +020025 select GENERIC_PCI_IOMAP
Michal Simek839396a2013-12-20 10:16:40 +010026 select GENERIC_SCHED_CLOCK
George Spelvin7b132772016-05-25 11:06:09 -040027 select HAVE_ARCH_HASH
Michal Simek25213382014-04-07 12:51:44 +020028 select HAVE_ARCH_KGDB
YiFei Zhu282a1812020-09-24 07:44:16 -050029 select HAVE_ARCH_SECCOMP
Michal Simek25213382014-04-07 12:51:44 +020030 select HAVE_DEBUG_KMEMLEAK
Michal Simek26022762020-01-14 10:05:24 +010031 select HAVE_DMA_CONTIGUOUS
Michal Simek25213382014-04-07 12:51:44 +020032 select HAVE_DYNAMIC_FTRACE
33 select HAVE_FTRACE_MCOUNT_RECORD
34 select HAVE_FUNCTION_GRAPH_TRACER
Michal Simek25213382014-04-07 12:51:44 +020035 select HAVE_FUNCTION_TRACER
Michal Simek25213382014-04-07 12:51:44 +020036 select HAVE_OPROFILE
Christoph Hellwigeb01d422018-11-15 20:05:32 +010037 select HAVE_PCI
Michal Simek25213382014-04-07 12:51:44 +020038 select IRQ_DOMAIN
Zubair Lutfullah Kakakhel0547dc72016-11-14 12:13:45 +000039 select XILINX_INTC
David Howells786d35d2012-09-28 14:31:03 +093040 select MODULES_USE_ELF_RELA
Michal Simek25213382014-04-07 12:51:44 +020041 select OF
42 select OF_EARLY_FLATTREE
Christoph Hellwig2eac9c22018-11-15 20:05:33 +010043 select PCI_DOMAINS_GENERIC if PCI
Christoph Hellwig20f1b792018-11-15 20:05:34 +010044 select PCI_SYSCALL if PCI
Michal Simek25213382014-04-07 12:51:44 +020045 select TRACING_SUPPORT
46 select VIRT_TO_BUS
Zhaoxiu Zengfff7fb02016-05-20 17:03:57 -070047 select CPU_NO_EFFICIENT_FFS
Peter Zijlstra6137fed2018-09-04 17:04:07 +020048 select MMU_GATHER_NO_RANGE if MMU
Michal Simek6bf8be72017-08-08 16:06:52 +020049 select SPARSE_IRQ
Greg Kroah-Hartman964f5952020-10-28 15:06:48 +010050 select SET_FS
Michal Simek575ca282009-03-27 14:25:50 +010051
Babu Moger206d3642017-09-08 16:14:25 -070052# Endianness selection
53choice
54 prompt "Endianness selection"
Babu Moger428dbf12017-09-18 10:53:29 -060055 default CPU_LITTLE_ENDIAN
Babu Moger206d3642017-09-08 16:14:25 -070056 help
57 microblaze architectures can be configured for either little or
58 big endian formats. Be sure to select the appropriate mode.
59
60config CPU_BIG_ENDIAN
61 bool "Big endian"
62
63config CPU_LITTLE_ENDIAN
64 bool "Little endian"
65
66endchoice
67
Michal Simek4e2e4122011-12-15 09:24:06 +010068config ZONE_DMA
69 def_bool y
70
Michal Simek575ca282009-03-27 14:25:50 +010071config ARCH_HAS_ILOG2_U32
72 def_bool n
73
74config ARCH_HAS_ILOG2_U64
75 def_bool n
76
Michal Simek575ca282009-03-27 14:25:50 +010077config GENERIC_HWEIGHT
78 def_bool y
79
Michal Simek575ca282009-03-27 14:25:50 +010080config GENERIC_CALIBRATE_DELAY
81 def_bool y
82
Remis Lima Baima14f87382009-06-18 19:55:32 +020083config GENERIC_CSUM
84 def_bool y
85
Michal Simek24b45a12009-11-10 15:57:01 +010086config STACKTRACE_SUPPORT
87 def_bool y
88
Michal Simekbf2d8092009-12-10 12:07:02 +010089config LOCKDEP_SUPPORT
90 def_bool y
91
Michal Simekc24cf712014-04-07 13:05:00 +020092source "arch/microblaze/Kconfig.platform"
Michal Simek575ca282009-03-27 14:25:50 +010093
94menu "Processor type and features"
95
Michal Simek575ca282009-03-27 14:25:50 +010096source "kernel/Kconfig.hz"
97
98config MMU
Michal Simeka116f6d2009-05-26 16:30:31 +020099 bool "MMU support"
100 default n
Michal Simek575ca282009-03-27 14:25:50 +0100101
Michal Simek575ca282009-03-27 14:25:50 +0100102comment "Boot options"
103
104config CMDLINE_BOOL
105 bool "Default bootloader kernel arguments"
106
107config CMDLINE
108 string "Default kernel command string"
109 depends on CMDLINE_BOOL
110 default "console=ttyUL0,115200"
111 help
112 On some architectures there is currently no way for the boot loader
113 to pass arguments to the kernel. For these architectures, you should
114 supply some command-line options at build time by entering them
115 here.
116
117config CMDLINE_FORCE
118 bool "Force default kernel command string"
119 depends on CMDLINE_BOOL
120 default n
121 help
122 Set this to have arguments from the default kernel command string
123 override those passed by the boot loader.
124
Michal Simek575ca282009-03-27 14:25:50 +0100125endmenu
126
Michal Simekb408e2c2014-09-01 16:23:54 +0200127menu "Kernel features"
Michal Simeka116f6d2009-05-26 16:30:31 +0200128
Michal Simek4cbbbb42014-10-27 08:28:16 +0100129config NR_CPUS
130 int
131 default "1"
132
Michal Simeka116f6d2009-05-26 16:30:31 +0200133config ADVANCED_OPTIONS
134 bool "Prompt for advanced kernel configuration options"
Michal Simeka116f6d2009-05-26 16:30:31 +0200135 help
136 This option will enable prompting for a variety of advanced kernel
137 configuration options. These options can cause the kernel to not
138 work if they are set incorrectly, but can be used to optimize certain
139 aspects of kernel memory management.
140
141 Unless you know what you are doing, say N here.
142
143comment "Default settings for advanced configuration options are used"
144 depends on !ADVANCED_OPTIONS
145
Michal Simek3a0d7a42010-02-22 12:16:08 +0100146config XILINX_UNCACHED_SHADOW
147 bool "Are you using uncached shadow for RAM ?"
148 depends on ADVANCED_OPTIONS && !MMU
149 default n
150 help
151 This is needed to be able to allocate uncachable memory regions.
152 The feature requires the design to define the RAM memory controller
153 window to be twice as large as the actual physical memory.
154
Michal Simek2f2f3712011-12-15 15:02:37 +0100155config HIGHMEM
156 bool "High memory support"
Michal Simeka116f6d2009-05-26 16:30:31 +0200157 depends on MMU
Michal Simek2f2f3712011-12-15 15:02:37 +0100158 help
159 The address space of Microblaze processors is only 4 Gigabytes large
160 and it has to accommodate user address space, kernel address
161 space as well as some memory mapped IO. That means that, if you
162 have a large amount of physical memory and/or IO, not all of the
163 memory can be "permanently mapped" by the kernel. The physical
164 memory that is not permanently mapped is called "high memory".
165
166 If unsure, say n.
Michal Simeka116f6d2009-05-26 16:30:31 +0200167
168config LOWMEM_SIZE_BOOL
169 bool "Set maximum low memory"
Michal Simekb8a84052010-02-22 11:33:07 +0100170 depends on ADVANCED_OPTIONS && MMU
Michal Simeka116f6d2009-05-26 16:30:31 +0200171 help
172 This option allows you to set the maximum amount of memory which
173 will be used as "low memory", that is, memory which the kernel can
174 access directly, without having to set up a kernel virtual mapping.
175 This can be useful in optimizing the layout of kernel virtual
176 memory.
177
178 Say N here unless you know what you are doing.
179
180config LOWMEM_SIZE
181 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
Michal Simeka116f6d2009-05-26 16:30:31 +0200182 default "0x30000000"
183
Michal Simek0b9b0202010-11-08 12:37:40 +0100184config MANUAL_RESET_VECTOR
185 hex "Microblaze reset vector address setup"
186 default "0x0"
187 help
188 Set this option to have the kernel override the CPU Reset vector.
189 If zero, no change will be made to the MicroBlaze reset vector at
190 address 0x0.
191 If non-zero, a jump instruction to this address, will be written
192 to the reset vector at address 0x0.
193 If you are unsure, set it to default value 0x0.
194
Michal Simeka116f6d2009-05-26 16:30:31 +0200195config KERNEL_START_BOOL
196 bool "Set custom kernel base address"
197 depends on ADVANCED_OPTIONS
198 help
199 This option allows you to set the kernel virtual address at which
200 the kernel will map low memory (the kernel image will be linked at
201 this address). This can be useful in optimizing the virtual memory
202 layout of the system.
203
204 Say N here unless you know what you are doing.
205
206config KERNEL_START
207 hex "Virtual address of kernel base" if KERNEL_START_BOOL
208 default "0xc0000000" if MMU
209 default KERNEL_BASE_ADDR if !MMU
210
211config TASK_SIZE_BOOL
212 bool "Set custom user task size"
Michal Simekb8a84052010-02-22 11:33:07 +0100213 depends on ADVANCED_OPTIONS && MMU
Michal Simeka116f6d2009-05-26 16:30:31 +0200214 help
215 This option allows you to set the amount of virtual address space
216 allocated to user tasks. This can be useful in optimizing the
217 virtual memory layout of the system.
218
219 Say N here unless you know what you are doing.
220
221config TASK_SIZE
222 hex "Size of user task space" if TASK_SIZE_BOOL
Michal Simeka116f6d2009-05-26 16:30:31 +0200223 default "0x80000000"
224
Steven J. Magnaniba9c4f82010-05-13 10:48:27 -0500225choice
226 prompt "Page size"
227 default MICROBLAZE_4K_PAGES
228 depends on ADVANCED_OPTIONS && !MMU
229 help
230 Select the kernel logical page size. Increasing the page size
231 will reduce software overhead at each page boundary, allow
232 hardware prefetch mechanisms to be more effective, and allow
233 larger dma transfers increasing IO efficiency and reducing
234 overhead. However the utilization of memory will increase.
235 For example, each cached file will using a multiple of the
236 page size to hold its contents and the difference between the
237 end of file and the end of page is wasted.
238
239 If unsure, choose 4K_PAGES.
240
241config MICROBLAZE_4K_PAGES
242 bool "4k page size"
243
Steven J. Magnaniba9c4f82010-05-13 10:48:27 -0500244config MICROBLAZE_16K_PAGES
245 bool "16k page size"
246
Michal Simek6e80cff2012-08-01 10:29:28 +0200247config MICROBLAZE_64K_PAGES
248 bool "64k page size"
Steven J. Magnaniba9c4f82010-05-13 10:48:27 -0500249
250endchoice
251
Michal Simek575ca282009-03-27 14:25:50 +0100252endmenu
253
Michal Simeka6475c12010-01-18 15:27:10 +0100254menu "Bus Options"
255
Michal Simek733cc212010-01-18 15:27:11 +0100256config PCI_XILINX
257 bool "Xilinx PCI host bridge support"
258 depends on PCI
259
Michal Simeka6475c12010-01-18 15:27:10 +0100260endmenu