4 select HAVE_MEMBLOCK_NODE_MAP
5 select HAVE_FUNCTION_TRACER
6 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
7 select HAVE_FUNCTION_GRAPH_TRACER
8 select HAVE_DYNAMIC_FTRACE
9 select HAVE_FTRACE_MCOUNT_RECORD
10 select ARCH_WANT_OPTIONAL_GPIOLIB
14 select HAVE_DMA_API_DEBUG
15 select TRACING_SUPPORT
17 select OF_EARLY_FLATTREE
18 select HAVE_GENERIC_HARDIRQS
19 select GENERIC_IRQ_PROBE
20 select GENERIC_IRQ_SHOW
21 select GENERIC_PCI_IOMAP
22 select GENERIC_CPU_DEVICES
23 select GENERIC_ATOMIC64
28 config RWSEM_GENERIC_SPINLOCK
34 config ARCH_POPULATES_NODE_MAP
37 config RWSEM_XCHGADD_ALGORITHM
40 config ARCH_HAS_ILOG2_U32
43 config ARCH_HAS_ILOG2_U64
46 config GENERIC_HWEIGHT
49 config GENERIC_CALIBRATE_DELAY
52 config GENERIC_TIME_VSYSCALL
55 config GENERIC_CLOCKEVENTS
64 config STACKTRACE_SUPPORT
67 config LOCKDEP_SUPPORT
70 config HAVE_LATENCYTOP_SUPPORT
75 source "kernel/Kconfig.freezer"
77 source "arch/microblaze/platform/Kconfig.platform"
79 menu "Processor type and features"
81 source "kernel/time/Kconfig"
83 source "kernel/Kconfig.preempt"
85 source "kernel/Kconfig.hz"
96 comment "Boot options"
99 bool "Default bootloader kernel arguments"
102 string "Default kernel command string"
103 depends on CMDLINE_BOOL
104 default "console=ttyUL0,115200"
106 On some architectures there is currently no way for the boot loader
107 to pass arguments to the kernel. For these architectures, you should
108 supply some command-line options at build time by entering them
112 bool "Force default kernel command string"
113 depends on CMDLINE_BOOL
116 Set this to have arguments from the default kernel command string
117 override those passed by the boot loader.
120 bool "Enable seccomp to safely compute untrusted bytecode"
124 This kernel feature is useful for number crunching applications
125 that may need to compute untrusted bytecode during their
126 execution. By using pipes or other transports made available to
127 the process as file descriptors supporting the read/write
128 syscalls, it's possible to isolate those applications in
129 their own address space using seccomp. Once seccomp is
130 enabled via /proc/<pid>/seccomp, it cannot be disabled
131 and the task is only allowed to execute a few safe syscalls
132 defined by each seccomp mode.
134 If unsure, say Y. Only embedded should say N here.
138 menu "Advanced setup"
140 config ADVANCED_OPTIONS
141 bool "Prompt for advanced kernel configuration options"
143 This option will enable prompting for a variety of advanced kernel
144 configuration options. These options can cause the kernel to not
145 work if they are set incorrectly, but can be used to optimize certain
146 aspects of kernel memory management.
148 Unless you know what you are doing, say N here.
150 comment "Default settings for advanced configuration options are used"
151 depends on !ADVANCED_OPTIONS
153 config XILINX_UNCACHED_SHADOW
154 bool "Are you using uncached shadow for RAM ?"
155 depends on ADVANCED_OPTIONS && !MMU
158 This is needed to be able to allocate uncachable memory regions.
159 The feature requires the design to define the RAM memory controller
160 window to be twice as large as the actual physical memory.
163 bool "High memory support"
166 The address space of Microblaze processors is only 4 Gigabytes large
167 and it has to accommodate user address space, kernel address
168 space as well as some memory mapped IO. That means that, if you
169 have a large amount of physical memory and/or IO, not all of the
170 memory can be "permanently mapped" by the kernel. The physical
171 memory that is not permanently mapped is called "high memory".
175 config LOWMEM_SIZE_BOOL
176 bool "Set maximum low memory"
177 depends on ADVANCED_OPTIONS && MMU
179 This option allows you to set the maximum amount of memory which
180 will be used as "low memory", that is, memory which the kernel can
181 access directly, without having to set up a kernel virtual mapping.
182 This can be useful in optimizing the layout of kernel virtual
185 Say N here unless you know what you are doing.
188 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
191 config MANUAL_RESET_VECTOR
192 hex "Microblaze reset vector address setup"
195 Set this option to have the kernel override the CPU Reset vector.
196 If zero, no change will be made to the MicroBlaze reset vector at
198 If non-zero, a jump instruction to this address, will be written
199 to the reset vector at address 0x0.
200 If you are unsure, set it to default value 0x0.
202 config KERNEL_START_BOOL
203 bool "Set custom kernel base address"
204 depends on ADVANCED_OPTIONS
206 This option allows you to set the kernel virtual address at which
207 the kernel will map low memory (the kernel image will be linked at
208 this address). This can be useful in optimizing the virtual memory
209 layout of the system.
211 Say N here unless you know what you are doing.
214 hex "Virtual address of kernel base" if KERNEL_START_BOOL
215 default "0xc0000000" if MMU
216 default KERNEL_BASE_ADDR if !MMU
218 config TASK_SIZE_BOOL
219 bool "Set custom user task size"
220 depends on ADVANCED_OPTIONS && MMU
222 This option allows you to set the amount of virtual address space
223 allocated to user tasks. This can be useful in optimizing the
224 virtual memory layout of the system.
226 Say N here unless you know what you are doing.
229 hex "Size of user task space" if TASK_SIZE_BOOL
234 default MICROBLAZE_4K_PAGES
235 depends on ADVANCED_OPTIONS && !MMU
237 Select the kernel logical page size. Increasing the page size
238 will reduce software overhead at each page boundary, allow
239 hardware prefetch mechanisms to be more effective, and allow
240 larger dma transfers increasing IO efficiency and reducing
241 overhead. However the utilization of memory will increase.
242 For example, each cached file will using a multiple of the
243 page size to hold its contents and the difference between the
244 end of file and the end of page is wasted.
246 If unsure, choose 4K_PAGES.
248 config MICROBLAZE_4K_PAGES
251 config MICROBLAZE_8K_PAGES
254 config MICROBLAZE_16K_PAGES
257 config MICROBLAZE_32K_PAGES
266 menu "Executable file formats"
268 source "fs/Kconfig.binfmt"
284 bool "Xilinx PCI host bridge support"
287 source "drivers/pci/Kconfig"
293 source "drivers/Kconfig"
297 source "arch/microblaze/Kconfig.debug"
299 source "security/Kconfig"
301 source "crypto/Kconfig"