3 select ARCH_HAS_GCOV_PROFILE_ALL
4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_NO_COHERENT_DMA_MMAP if !MMU
6 select ARCH_WANT_IPC_PARSE_VERSION
7 select BUILDTIME_EXTABLE_SORT
9 select CLONE_BACKWARDS3
11 select GENERIC_ATOMIC64
12 select GENERIC_CLOCKEVENTS
13 select GENERIC_CPU_DEVICES
14 select GENERIC_IDLE_POLL_SETUP
15 select GENERIC_IRQ_PROBE
16 select GENERIC_IRQ_SHOW
17 select GENERIC_PCI_IOMAP
18 select GENERIC_SCHED_CLOCK
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_DMA_API_DEBUG
23 select HAVE_DYNAMIC_FTRACE
24 select HAVE_FTRACE_MCOUNT_RECORD
25 select HAVE_FUNCTION_GRAPH_TRACER
26 select HAVE_FUNCTION_TRACER
29 select HAVE_MEMBLOCK_NODE_MAP
33 select MODULES_USE_ELF_RELA
35 select OF_EARLY_FLATTREE
36 select TRACING_SUPPORT
38 select CPU_NO_EFFICIENT_FFS
40 # Endianness selection
42 prompt "Endianness selection"
43 default CPU_LITTLE_ENDIAN
45 microblaze architectures can be configured for either little or
46 big endian formats. Be sure to select the appropriate mode.
51 config CPU_LITTLE_ENDIAN
59 config RWSEM_GENERIC_SPINLOCK
65 config RWSEM_XCHGADD_ALGORITHM
68 config ARCH_HAS_ILOG2_U32
71 config ARCH_HAS_ILOG2_U64
74 config GENERIC_HWEIGHT
77 config GENERIC_CALIBRATE_DELAY
83 config STACKTRACE_SUPPORT
86 config LOCKDEP_SUPPORT
91 source "kernel/Kconfig.freezer"
93 source "arch/microblaze/Kconfig.platform"
95 menu "Processor type and features"
97 source "kernel/Kconfig.preempt"
99 source "kernel/Kconfig.hz"
105 comment "Boot options"
108 bool "Default bootloader kernel arguments"
111 string "Default kernel command string"
112 depends on CMDLINE_BOOL
113 default "console=ttyUL0,115200"
115 On some architectures there is currently no way for the boot loader
116 to pass arguments to the kernel. For these architectures, you should
117 supply some command-line options at build time by entering them
121 bool "Force default kernel command string"
122 depends on CMDLINE_BOOL
125 Set this to have arguments from the default kernel command string
126 override those passed by the boot loader.
129 bool "Enable seccomp to safely compute untrusted bytecode"
133 This kernel feature is useful for number crunching applications
134 that may need to compute untrusted bytecode during their
135 execution. By using pipes or other transports made available to
136 the process as file descriptors supporting the read/write
137 syscalls, it's possible to isolate those applications in
138 their own address space using seccomp. Once seccomp is
139 enabled via /proc/<pid>/seccomp, it cannot be disabled
140 and the task is only allowed to execute a few safe syscalls
141 defined by each seccomp mode.
143 If unsure, say Y. Only embedded should say N here.
147 menu "Kernel features"
153 config ADVANCED_OPTIONS
154 bool "Prompt for advanced kernel configuration options"
156 This option will enable prompting for a variety of advanced kernel
157 configuration options. These options can cause the kernel to not
158 work if they are set incorrectly, but can be used to optimize certain
159 aspects of kernel memory management.
161 Unless you know what you are doing, say N here.
163 comment "Default settings for advanced configuration options are used"
164 depends on !ADVANCED_OPTIONS
166 config XILINX_UNCACHED_SHADOW
167 bool "Are you using uncached shadow for RAM ?"
168 depends on ADVANCED_OPTIONS && !MMU
171 This is needed to be able to allocate uncachable memory regions.
172 The feature requires the design to define the RAM memory controller
173 window to be twice as large as the actual physical memory.
176 bool "High memory support"
179 The address space of Microblaze processors is only 4 Gigabytes large
180 and it has to accommodate user address space, kernel address
181 space as well as some memory mapped IO. That means that, if you
182 have a large amount of physical memory and/or IO, not all of the
183 memory can be "permanently mapped" by the kernel. The physical
184 memory that is not permanently mapped is called "high memory".
188 config LOWMEM_SIZE_BOOL
189 bool "Set maximum low memory"
190 depends on ADVANCED_OPTIONS && MMU
192 This option allows you to set the maximum amount of memory which
193 will be used as "low memory", that is, memory which the kernel can
194 access directly, without having to set up a kernel virtual mapping.
195 This can be useful in optimizing the layout of kernel virtual
198 Say N here unless you know what you are doing.
201 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
204 config MANUAL_RESET_VECTOR
205 hex "Microblaze reset vector address setup"
208 Set this option to have the kernel override the CPU Reset vector.
209 If zero, no change will be made to the MicroBlaze reset vector at
211 If non-zero, a jump instruction to this address, will be written
212 to the reset vector at address 0x0.
213 If you are unsure, set it to default value 0x0.
215 config KERNEL_START_BOOL
216 bool "Set custom kernel base address"
217 depends on ADVANCED_OPTIONS
219 This option allows you to set the kernel virtual address at which
220 the kernel will map low memory (the kernel image will be linked at
221 this address). This can be useful in optimizing the virtual memory
222 layout of the system.
224 Say N here unless you know what you are doing.
227 hex "Virtual address of kernel base" if KERNEL_START_BOOL
228 default "0xc0000000" if MMU
229 default KERNEL_BASE_ADDR if !MMU
231 config TASK_SIZE_BOOL
232 bool "Set custom user task size"
233 depends on ADVANCED_OPTIONS && MMU
235 This option allows you to set the amount of virtual address space
236 allocated to user tasks. This can be useful in optimizing the
237 virtual memory layout of the system.
239 Say N here unless you know what you are doing.
242 hex "Size of user task space" if TASK_SIZE_BOOL
247 default MICROBLAZE_4K_PAGES
248 depends on ADVANCED_OPTIONS && !MMU
250 Select the kernel logical page size. Increasing the page size
251 will reduce software overhead at each page boundary, allow
252 hardware prefetch mechanisms to be more effective, and allow
253 larger dma transfers increasing IO efficiency and reducing
254 overhead. However the utilization of memory will increase.
255 For example, each cached file will using a multiple of the
256 page size to hold its contents and the difference between the
257 end of file and the end of page is wasted.
259 If unsure, choose 4K_PAGES.
261 config MICROBLAZE_4K_PAGES
264 config MICROBLAZE_16K_PAGES
267 config MICROBLAZE_64K_PAGES
276 menu "Executable file formats"
278 source "fs/Kconfig.binfmt"
290 config PCI_DOMAINS_GENERIC
297 bool "Xilinx PCI host bridge support"
300 source "drivers/pci/Kconfig"
306 source "drivers/Kconfig"
310 source "arch/microblaze/Kconfig.debug"
312 source "security/Kconfig"
314 source "crypto/Kconfig"