arch/microblaze/Kconfig

   1 # For a description of the syntax of this configuration file,
   2 # see Documentation/kbuild/kconfig-language.txt.
   3
   4 mainmenu "Linux/Microblaze Kernel Configuration"
   5
   6 config 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
  24 config SWAP
  25         def_bool n
  26
  27 config RWSEM_GENERIC_SPINLOCK
  28         def_bool y
  29
  30 config RWSEM_XCHGADD_ALGORITHM
  31         bool
  32
  33 config ARCH_HAS_ILOG2_U32
  34         def_bool n
  35
  36 config ARCH_HAS_ILOG2_U64
  37         def_bool n
  38
  39 config GENERIC_FIND_NEXT_BIT
  40         def_bool y
  41
  42 config GENERIC_HWEIGHT
  43         def_bool y
  44
  45 config GENERIC_HARDIRQS
  46         def_bool y
  47
  48 config GENERIC_IRQ_PROBE
  49         def_bool y
  50
  51 config GENERIC_CALIBRATE_DELAY
  52         def_bool y
  53
  54 config GENERIC_TIME_VSYSCALL
  55         def_bool n
  56
  57 config GENERIC_CLOCKEVENTS
  58         def_bool y
  59
  60 config GENERIC_HARDIRQS_NO__DO_IRQ
  61         def_bool y
  62
  63 config GENERIC_GPIO
  64         def_bool y
  65
  66 config GENERIC_CSUM
  67         def_bool y
  68
  69 config STACKTRACE_SUPPORT
  70         def_bool y
  71
  72 config LOCKDEP_SUPPORT
  73         def_bool y
  74
  75 config HAVE_LATENCYTOP_SUPPORT
  76         def_bool y
  77
  78 source "init/Kconfig"
  79
  80 source "kernel/Kconfig.freezer"
  81
  82 source "arch/microblaze/platform/Kconfig.platform"
  83
  84 menu "Processor type and features"
  85
  86 source "kernel/time/Kconfig"
  87
  88 source "kernel/Kconfig.preempt"
  89
  90 source "kernel/Kconfig.hz"
  91
  92 config MMU
  93         bool "MMU support"
  94         default n
  95
  96 config NO_MMU
  97         bool
  98         depends on !MMU
  99         default y
 100
 101 comment "Boot options"
 102
 103 config CMDLINE_BOOL
 104         bool "Default bootloader kernel arguments"
 105
 106 config 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
 116 config 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
 124 config 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
 141 endmenu
 142
 143 menu "Advanced setup"
 144
 145 config 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
 155 comment "Default settings for advanced configuration options are used"
 156         depends on !ADVANCED_OPTIONS
 157
 158 config 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
 167 config 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
 177 config HIGHMEM_START
 178         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 179         depends on MMU
 180         default "0xfe000000"
 181
 182 config 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
 194 config LOWMEM_SIZE
 195         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 196         default "0x30000000"
 197
 198 config 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
 209 config 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
 214 config 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
 224 config TASK_SIZE
 225         hex "Size of user task space" if TASK_SIZE_BOOL
 226         default "0x80000000"
 227
 228 choice
 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
 244 config MICROBLAZE_4K_PAGES
 245         bool "4k page size"
 246
 247 config MICROBLAZE_8K_PAGES
 248         bool "8k page size"
 249
 250 config MICROBLAZE_16K_PAGES
 251         bool "16k page size"
 252
 253 config MICROBLAZE_32K_PAGES
 254         bool "32k page size"
 255
 256 endchoice
 257
 258 endmenu
 259
 260 source "mm/Kconfig"
 261
 262 menu "Exectuable file formats"
 263
 264 source "fs/Kconfig.binfmt"
 265
 266 endmenu
 267
 268 menu "Bus Options"
 269
 270 config PCI
 271         bool "PCI support"
 272
 273 config PCI_DOMAINS
 274         def_bool PCI
 275
 276 config PCI_SYSCALL
 277         def_bool PCI
 278
 279 config PCI_XILINX
 280         bool "Xilinx PCI host bridge support"
 281         depends on PCI
 282
 283 source "drivers/pci/Kconfig"
 284
 285 endmenu
 286
 287 source "net/Kconfig"
 288
 289 source "drivers/Kconfig"
 290
 291 source "fs/Kconfig"
 292
 293 source "arch/microblaze/Kconfig.debug"
 294
 295 source "security/Kconfig"
 296
 297 source "crypto/Kconfig"
 298
 299 source "lib/Kconfig"