xref: /openbmc/linux/arch/microblaze/Kconfig (revision 1fa6ac37) 
1# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3
4mainmenu "Linux/Microblaze Kernel Configuration"
5
6config MICROBLAZE
7	def_bool y
8	select HAVE_LMB
9	select HAVE_FUNCTION_TRACER
10	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
11	select HAVE_FUNCTION_GRAPH_TRACER
12	select HAVE_DYNAMIC_FTRACE
13	select HAVE_FTRACE_MCOUNT_RECORD
14	select USB_ARCH_HAS_EHCI
15	select ARCH_WANT_OPTIONAL_GPIOLIB
16	select HAVE_OPROFILE
17	select HAVE_DMA_ATTRS
18	select HAVE_DMA_API_DEBUG
19	select TRACING_SUPPORT
20
21config SWAP
22	def_bool n
23
24config RWSEM_GENERIC_SPINLOCK
25	def_bool y
26
27config RWSEM_XCHGADD_ALGORITHM
28	bool
29
30config ARCH_HAS_ILOG2_U32
31	def_bool n
32
33config ARCH_HAS_ILOG2_U64
34	def_bool n
35
36config GENERIC_FIND_NEXT_BIT
37	def_bool y
38
39config GENERIC_HWEIGHT
40	def_bool y
41
42config GENERIC_HARDIRQS
43	def_bool y
44
45config GENERIC_IRQ_PROBE
46	def_bool y
47
48config GENERIC_CALIBRATE_DELAY
49	def_bool y
50
51config GENERIC_TIME
52	def_bool y
53
54config GENERIC_TIME_VSYSCALL
55	def_bool n
56
57config GENERIC_CLOCKEVENTS
58	def_bool y
59
60config GENERIC_HARDIRQS_NO__DO_IRQ
61	def_bool y
62
63config GENERIC_GPIO
64	def_bool y
65
66config GENERIC_CSUM
67	def_bool y
68
69config STACKTRACE_SUPPORT
70	def_bool y
71
72config LOCKDEP_SUPPORT
73	def_bool y
74
75config HAVE_LATENCYTOP_SUPPORT
76	def_bool y
77
78config DTC
79	def_bool y
80
81source "init/Kconfig"
82
83source "kernel/Kconfig.freezer"
84
85source "arch/microblaze/platform/Kconfig.platform"
86
87menu "Processor type and features"
88
89source "kernel/time/Kconfig"
90
91source "kernel/Kconfig.preempt"
92
93source "kernel/Kconfig.hz"
94
95config MMU
96	bool "MMU support"
97	default n
98
99config NO_MMU
100	bool
101	depends on !MMU
102	default y
103
104comment "Boot options"
105
106config CMDLINE_BOOL
107	bool "Default bootloader kernel arguments"
108
109config CMDLINE
110	string "Default kernel command string"
111	depends on CMDLINE_BOOL
112	default "console=ttyUL0,115200"
113	help
114	  On some architectures there is currently no way for the boot loader
115	  to pass arguments to the kernel. For these architectures, you should
116	  supply some command-line options at build time by entering them
117	  here.
118
119config CMDLINE_FORCE
120	bool "Force default kernel command string"
121	depends on CMDLINE_BOOL
122	default n
123	help
124	  Set this to have arguments from the default kernel command string
125	  override those passed by the boot loader.
126
127config OF
128	def_bool y
129	select OF_FLATTREE
130
131config PROC_DEVICETREE
132	bool "Support for device tree in /proc"
133	depends on PROC_FS
134	help
135	  This option adds a device-tree directory under /proc which contains
136	  an image of the device tree that the kernel copies from Open
137	  Firmware or other boot firmware. If unsure, say Y here.
138
139endmenu
140
141menu "Advanced setup"
142
143config ADVANCED_OPTIONS
144	bool "Prompt for advanced kernel configuration options"
145	help
146	  This option will enable prompting for a variety of advanced kernel
147	  configuration options.  These options can cause the kernel to not
148	  work if they are set incorrectly, but can be used to optimize certain
149	  aspects of kernel memory management.
150
151	  Unless you know what you are doing, say N here.
152
153comment "Default settings for advanced configuration options are used"
154	depends on !ADVANCED_OPTIONS
155
156config XILINX_UNCACHED_SHADOW
157	bool "Are you using uncached shadow for RAM ?"
158	depends on ADVANCED_OPTIONS && !MMU
159	default n
160	help
161	  This is needed to be able to allocate uncachable memory regions.
162	  The feature requires the design to define the RAM memory controller
163	  window to be twice as large as the actual physical memory.
164
165config HIGHMEM_START_BOOL
166	bool "Set high memory pool address"
167	depends on ADVANCED_OPTIONS && HIGHMEM
168	help
169	  This option allows you to set the base address of the kernel virtual
170	  area used to map high memory pages.  This can be useful in
171	  optimizing the layout of kernel virtual memory.
172
173	  Say N here unless you know what you are doing.
174
175config HIGHMEM_START
176	hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
177	depends on MMU
178	default "0xfe000000"
179
180config LOWMEM_SIZE_BOOL
181	bool "Set maximum low memory"
182	depends on ADVANCED_OPTIONS && MMU
183	help
184	  This option allows you to set the maximum amount of memory which
185	  will be used as "low memory", that is, memory which the kernel can
186	  access directly, without having to set up a kernel virtual mapping.
187	  This can be useful in optimizing the layout of kernel virtual
188	  memory.
189
190	  Say N here unless you know what you are doing.
191
192config LOWMEM_SIZE
193	hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
194	default "0x30000000"
195
196config KERNEL_START_BOOL
197	bool "Set custom kernel base address"
198	depends on ADVANCED_OPTIONS
199	help
200	  This option allows you to set the kernel virtual address at which
201	  the kernel will map low memory (the kernel image will be linked at
202	  this address).  This can be useful in optimizing the virtual memory
203	  layout of the system.
204
205	  Say N here unless you know what you are doing.
206
207config KERNEL_START
208	hex "Virtual address of kernel base" if KERNEL_START_BOOL
209	default "0xc0000000" if MMU
210	default KERNEL_BASE_ADDR if !MMU
211
212config TASK_SIZE_BOOL
213	bool "Set custom user task size"
214	depends on ADVANCED_OPTIONS && MMU
215	help
216	  This option allows you to set the amount of virtual address space
217	  allocated to user tasks.  This can be useful in optimizing the
218	  virtual memory layout of the system.
219
220	  Say N here unless you know what you are doing.
221
222config TASK_SIZE
223	hex "Size of user task space" if TASK_SIZE_BOOL
224	default "0x80000000"
225
226endmenu
227
228source "mm/Kconfig"
229
230menu "Exectuable file formats"
231
232source "fs/Kconfig.binfmt"
233
234endmenu
235
236menu "Bus Options"
237
238config PCI
239	bool "PCI support"
240
241config PCI_DOMAINS
242	def_bool PCI
243
244config PCI_SYSCALL
245	def_bool PCI
246
247config PCI_XILINX
248	bool "Xilinx PCI host bridge support"
249	depends on PCI
250
251source "drivers/pci/Kconfig"
252
253endmenu
254
255source "net/Kconfig"
256
257source "drivers/Kconfig"
258
259source "fs/Kconfig"
260
261source "arch/microblaze/Kconfig.debug"
262
263source "security/Kconfig"
264
265source "crypto/Kconfig"
266
267source "lib/Kconfig"
268