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_MEMBLOCK 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_ARCH_KGDB 18 select HAVE_DMA_ATTRS 19 select HAVE_DMA_API_DEBUG 20 select TRACING_SUPPORT 21 select OF 22 select OF_FLATTREE 23 24config SWAP 25 def_bool n 26 27config RWSEM_GENERIC_SPINLOCK 28 def_bool y 29 30config RWSEM_XCHGADD_ALGORITHM 31 bool 32 33config ARCH_HAS_ILOG2_U32 34 def_bool n 35 36config ARCH_HAS_ILOG2_U64 37 def_bool n 38 39config GENERIC_FIND_NEXT_BIT 40 def_bool y 41 42config GENERIC_HWEIGHT 43 def_bool y 44 45config GENERIC_HARDIRQS 46 def_bool y 47 48config GENERIC_IRQ_PROBE 49 def_bool y 50 51config GENERIC_CALIBRATE_DELAY 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 78source "init/Kconfig" 79 80source "kernel/Kconfig.freezer" 81 82source "arch/microblaze/platform/Kconfig.platform" 83 84menu "Processor type and features" 85 86source "kernel/time/Kconfig" 87 88source "kernel/Kconfig.preempt" 89 90source "kernel/Kconfig.hz" 91 92config MMU 93 bool "MMU support" 94 default n 95 96config NO_MMU 97 bool 98 depends on !MMU 99 default y 100 101comment "Boot options" 102 103config CMDLINE_BOOL 104 bool "Default bootloader kernel arguments" 105 106config CMDLINE 107 string "Default kernel command string" 108 depends on CMDLINE_BOOL 109 default "console=ttyUL0,115200" 110 help 111 On some architectures there is currently no way for the boot loader 112 to pass arguments to the kernel. For these architectures, you should 113 supply some command-line options at build time by entering them 114 here. 115 116config CMDLINE_FORCE 117 bool "Force default kernel command string" 118 depends on CMDLINE_BOOL 119 default n 120 help 121 Set this to have arguments from the default kernel command string 122 override those passed by the boot loader. 123 124config SECCOMP 125 bool "Enable seccomp to safely compute untrusted bytecode" 126 depends on PROC_FS 127 default y 128 help 129 This kernel feature is useful for number crunching applications 130 that may need to compute untrusted bytecode during their 131 execution. By using pipes or other transports made available to 132 the process as file descriptors supporting the read/write 133 syscalls, it's possible to isolate those applications in 134 their own address space using seccomp. Once seccomp is 135 enabled via /proc/<pid>/seccomp, it cannot be disabled 136 and the task is only allowed to execute a few safe syscalls 137 defined by each seccomp mode. 138 139 If unsure, say Y. Only embedded should say N here. 140 141endmenu 142 143menu "Advanced setup" 144 145config ADVANCED_OPTIONS 146 bool "Prompt for advanced kernel configuration options" 147 help 148 This option will enable prompting for a variety of advanced kernel 149 configuration options. These options can cause the kernel to not 150 work if they are set incorrectly, but can be used to optimize certain 151 aspects of kernel memory management. 152 153 Unless you know what you are doing, say N here. 154 155comment "Default settings for advanced configuration options are used" 156 depends on !ADVANCED_OPTIONS 157 158config XILINX_UNCACHED_SHADOW 159 bool "Are you using uncached shadow for RAM ?" 160 depends on ADVANCED_OPTIONS && !MMU 161 default n 162 help 163 This is needed to be able to allocate uncachable memory regions. 164 The feature requires the design to define the RAM memory controller 165 window to be twice as large as the actual physical memory. 166 167config HIGHMEM_START_BOOL 168 bool "Set high memory pool address" 169 depends on ADVANCED_OPTIONS && HIGHMEM 170 help 171 This option allows you to set the base address of the kernel virtual 172 area used to map high memory pages. This can be useful in 173 optimizing the layout of kernel virtual memory. 174 175 Say N here unless you know what you are doing. 176 177config HIGHMEM_START 178 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 179 depends on MMU 180 default "0xfe000000" 181 182config LOWMEM_SIZE_BOOL 183 bool "Set maximum low memory" 184 depends on ADVANCED_OPTIONS && MMU 185 help 186 This option allows you to set the maximum amount of memory which 187 will be used as "low memory", that is, memory which the kernel can 188 access directly, without having to set up a kernel virtual mapping. 189 This can be useful in optimizing the layout of kernel virtual 190 memory. 191 192 Say N here unless you know what you are doing. 193 194config LOWMEM_SIZE 195 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 196 default "0x30000000" 197 198config KERNEL_START_BOOL 199 bool "Set custom kernel base address" 200 depends on ADVANCED_OPTIONS 201 help 202 This option allows you to set the kernel virtual address at which 203 the kernel will map low memory (the kernel image will be linked at 204 this address). This can be useful in optimizing the virtual memory 205 layout of the system. 206 207 Say N here unless you know what you are doing. 208 209config KERNEL_START 210 hex "Virtual address of kernel base" if KERNEL_START_BOOL 211 default "0xc0000000" if MMU 212 default KERNEL_BASE_ADDR if !MMU 213 214config TASK_SIZE_BOOL 215 bool "Set custom user task size" 216 depends on ADVANCED_OPTIONS && MMU 217 help 218 This option allows you to set the amount of virtual address space 219 allocated to user tasks. This can be useful in optimizing the 220 virtual memory layout of the system. 221 222 Say N here unless you know what you are doing. 223 224config TASK_SIZE 225 hex "Size of user task space" if TASK_SIZE_BOOL 226 default "0x80000000" 227 228choice 229 prompt "Page size" 230 default MICROBLAZE_4K_PAGES 231 depends on ADVANCED_OPTIONS && !MMU 232 help 233 Select the kernel logical page size. Increasing the page size 234 will reduce software overhead at each page boundary, allow 235 hardware prefetch mechanisms to be more effective, and allow 236 larger dma transfers increasing IO efficiency and reducing 237 overhead. However the utilization of memory will increase. 238 For example, each cached file will using a multiple of the 239 page size to hold its contents and the difference between the 240 end of file and the end of page is wasted. 241 242 If unsure, choose 4K_PAGES. 243 244config MICROBLAZE_4K_PAGES 245 bool "4k page size" 246 247config MICROBLAZE_8K_PAGES 248 bool "8k page size" 249 250config MICROBLAZE_16K_PAGES 251 bool "16k page size" 252 253config MICROBLAZE_32K_PAGES 254 bool "32k page size" 255 256endchoice 257 258endmenu 259 260source "mm/Kconfig" 261 262menu "Exectuable file formats" 263 264source "fs/Kconfig.binfmt" 265 266endmenu 267 268menu "Bus Options" 269 270config PCI 271 bool "PCI support" 272 273config PCI_DOMAINS 274 def_bool PCI 275 276config PCI_SYSCALL 277 def_bool PCI 278 279config PCI_XILINX 280 bool "Xilinx PCI host bridge support" 281 depends on PCI 282 283source "drivers/pci/Kconfig" 284 285endmenu 286 287source "net/Kconfig" 288 289source "drivers/Kconfig" 290 291source "fs/Kconfig" 292 293source "arch/microblaze/Kconfig.debug" 294 295source "security/Kconfig" 296 297source "crypto/Kconfig" 298 299source "lib/Kconfig" 300