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
19 select HAVE_GENERIC_HARDIRQS
20 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW
22 select GENERIC_PCI_IOMAP
23 select GENERIC_CPU_DEVICES
24 select GENERIC_ATOMIC64
29 config RWSEM_GENERIC_SPINLOCK
35 config ARCH_POPULATES_NODE_MAP
38 config RWSEM_XCHGADD_ALGORITHM
41 config ARCH_HAS_ILOG2_U32
44 config ARCH_HAS_ILOG2_U64
47 config GENERIC_HWEIGHT
50 config GENERIC_CALIBRATE_DELAY
53 config GENERIC_TIME_VSYSCALL
56 config GENERIC_CLOCKEVENTS
65 config STACKTRACE_SUPPORT
68 config LOCKDEP_SUPPORT
71 config HAVE_LATENCYTOP_SUPPORT
76 source "kernel/Kconfig.freezer"
78 source "arch/microblaze/platform/Kconfig.platform"
80 menu "Processor type and features"
82 source "kernel/time/Kconfig"
84 source "kernel/Kconfig.preempt"
86 source "kernel/Kconfig.hz"
97 comment "Boot options"
100 bool "Default bootloader kernel arguments"
103 string "Default kernel command string"
104 depends on CMDLINE_BOOL
105 default "console=ttyUL0,115200"
107 On some architectures there is currently no way for the boot loader
108 to pass arguments to the kernel. For these architectures, you should
109 supply some command-line options at build time by entering them
113 bool "Force default kernel command string"
114 depends on CMDLINE_BOOL
117 Set this to have arguments from the default kernel command string
118 override those passed by the boot loader.
121 bool "Enable seccomp to safely compute untrusted bytecode"
125 This kernel feature is useful for number crunching applications
126 that may need to compute untrusted bytecode during their
127 execution. By using pipes or other transports made available to
128 the process as file descriptors supporting the read/write
129 syscalls, it's possible to isolate those applications in
130 their own address space using seccomp. Once seccomp is
131 enabled via /proc/<pid>/seccomp, it cannot be disabled
132 and the task is only allowed to execute a few safe syscalls
133 defined by each seccomp mode.
135 If unsure, say Y. Only embedded should say N here.
139 menu "Advanced setup"
141 config ADVANCED_OPTIONS
142 bool "Prompt for advanced kernel configuration options"
144 This option will enable prompting for a variety of advanced kernel
145 configuration options. These options can cause the kernel to not
146 work if they are set incorrectly, but can be used to optimize certain
147 aspects of kernel memory management.
149 Unless you know what you are doing, say N here.
151 comment "Default settings for advanced configuration options are used"
152 depends on !ADVANCED_OPTIONS
154 config XILINX_UNCACHED_SHADOW
155 bool "Are you using uncached shadow for RAM ?"
156 depends on ADVANCED_OPTIONS && !MMU
159 This is needed to be able to allocate uncachable memory regions.
160 The feature requires the design to define the RAM memory controller
161 window to be twice as large as the actual physical memory.
164 bool "High memory support"
167 The address space of Microblaze processors is only 4 Gigabytes large
168 and it has to accommodate user address space, kernel address
169 space as well as some memory mapped IO. That means that, if you
170 have a large amount of physical memory and/or IO, not all of the
171 memory can be "permanently mapped" by the kernel. The physical
172 memory that is not permanently mapped is called "high memory".
176 config LOWMEM_SIZE_BOOL
177 bool "Set maximum low memory"
178 depends on ADVANCED_OPTIONS && MMU
180 This option allows you to set the maximum amount of memory which
181 will be used as "low memory", that is, memory which the kernel can
182 access directly, without having to set up a kernel virtual mapping.
183 This can be useful in optimizing the layout of kernel virtual
186 Say N here unless you know what you are doing.
189 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
192 config MANUAL_RESET_VECTOR
193 hex "Microblaze reset vector address setup"
196 Set this option to have the kernel override the CPU Reset vector.
197 If zero, no change will be made to the MicroBlaze reset vector at
199 If non-zero, a jump instruction to this address, will be written
200 to the reset vector at address 0x0.
201 If you are unsure, set it to default value 0x0.
203 config KERNEL_START_BOOL
204 bool "Set custom kernel base address"
205 depends on ADVANCED_OPTIONS
207 This option allows you to set the kernel virtual address at which
208 the kernel will map low memory (the kernel image will be linked at
209 this address). This can be useful in optimizing the virtual memory
210 layout of the system.
212 Say N here unless you know what you are doing.
215 hex "Virtual address of kernel base" if KERNEL_START_BOOL
216 default "0xc0000000" if MMU
217 default KERNEL_BASE_ADDR if !MMU
219 config TASK_SIZE_BOOL
220 bool "Set custom user task size"
221 depends on ADVANCED_OPTIONS && MMU
223 This option allows you to set the amount of virtual address space
224 allocated to user tasks. This can be useful in optimizing the
225 virtual memory layout of the system.
227 Say N here unless you know what you are doing.
230 hex "Size of user task space" if TASK_SIZE_BOOL
235 default MICROBLAZE_4K_PAGES
236 depends on ADVANCED_OPTIONS && !MMU
238 Select the kernel logical page size. Increasing the page size
239 will reduce software overhead at each page boundary, allow
240 hardware prefetch mechanisms to be more effective, and allow
241 larger dma transfers increasing IO efficiency and reducing
242 overhead. However the utilization of memory will increase.
243 For example, each cached file will using a multiple of the
244 page size to hold its contents and the difference between the
245 end of file and the end of page is wasted.
247 If unsure, choose 4K_PAGES.
249 config MICROBLAZE_4K_PAGES
252 config MICROBLAZE_8K_PAGES
255 config MICROBLAZE_16K_PAGES
258 config MICROBLAZE_32K_PAGES
264 hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
265 default "0x80000" if MMU
271 menu "Executable file formats"
273 source "fs/Kconfig.binfmt"
289 bool "Xilinx PCI host bridge support"
292 source "drivers/pci/Kconfig"
298 source "drivers/Kconfig"
302 source "arch/microblaze/Kconfig.debug"
304 source "security/Kconfig"
306 source "crypto/Kconfig"