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
  22 config SWAP
  23         def_bool n
  24
  25 config RWSEM_GENERIC_SPINLOCK
  26         def_bool y
  27
  28 config RWSEM_XCHGADD_ALGORITHM
  29         bool
  30
  31 config ARCH_HAS_ILOG2_U32
  32         def_bool n
  33
  34 config ARCH_HAS_ILOG2_U64
  35         def_bool n
  36
  37 config GENERIC_FIND_NEXT_BIT
  38         def_bool y
  39
  40 config GENERIC_HWEIGHT
  41         def_bool y
  42
  43 config GENERIC_HARDIRQS
  44         def_bool y
  45
  46 config GENERIC_IRQ_PROBE
  47         def_bool y
  48
  49 config GENERIC_CALIBRATE_DELAY
  50         def_bool y
  51
  52 config GENERIC_TIME
  53         def_bool y
  54
  55 config GENERIC_TIME_VSYSCALL
  56         def_bool n
  57
  58 config GENERIC_CLOCKEVENTS
  59         def_bool y
  60
  61 config GENERIC_HARDIRQS_NO__DO_IRQ
  62         def_bool y
  63
  64 config GENERIC_GPIO
  65         def_bool y
  66
  67 config GENERIC_CSUM
  68         def_bool y
  69
  70 config STACKTRACE_SUPPORT
  71         def_bool y
  72
  73 config LOCKDEP_SUPPORT
  74         def_bool y
  75
  76 config HAVE_LATENCYTOP_SUPPORT
  77         def_bool y
  78
  79 config DTC
  80         def_bool y
  81
  82 source "init/Kconfig"
  83
  84 source "kernel/Kconfig.freezer"
  85
  86 source "arch/microblaze/platform/Kconfig.platform"
  87
  88 menu "Processor type and features"
  89
  90 source "kernel/time/Kconfig"
  91
  92 source "kernel/Kconfig.preempt"
  93
  94 source "kernel/Kconfig.hz"
  95
  96 config MMU
  97         bool "MMU support"
  98         default n
  99
 100 config NO_MMU
 101         bool
 102         depends on !MMU
 103         default y
 104
 105 comment "Boot options"
 106
 107 config CMDLINE_BOOL
 108         bool "Default bootloader kernel arguments"
 109
 110 config CMDLINE
 111         string "Default kernel command string"
 112         depends on CMDLINE_BOOL
 113         default "console=ttyUL0,115200"
 114         help
 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
 118           here.
 119
 120 config CMDLINE_FORCE
 121         bool "Force default kernel command string"
 122         depends on CMDLINE_BOOL
 123         default n
 124         help
 125           Set this to have arguments from the default kernel command string
 126           override those passed by the boot loader.
 127
 128 config OF
 129         def_bool y
 130         select OF_FLATTREE
 131
 132 config PROC_DEVICETREE
 133         bool "Support for device tree in /proc"
 134         depends on PROC_FS
 135         help
 136           This option adds a device-tree directory under /proc which contains
 137           an image of the device tree that the kernel copies from Open
 138           Firmware or other boot firmware. If unsure, say Y here.
 139
 140 endmenu
 141
 142 menu "Advanced setup"
 143
 144 config ADVANCED_OPTIONS
 145         bool "Prompt for advanced kernel configuration options"
 146         help
 147           This option will enable prompting for a variety of advanced kernel
 148           configuration options.  These options can cause the kernel to not
 149           work if they are set incorrectly, but can be used to optimize certain
 150           aspects of kernel memory management.
 151
 152           Unless you know what you are doing, say N here.
 153
 154 comment "Default settings for advanced configuration options are used"
 155         depends on !ADVANCED_OPTIONS
 156
 157 config XILINX_UNCACHED_SHADOW
 158         bool "Are you using uncached shadow for RAM ?"
 159         depends on ADVANCED_OPTIONS && !MMU
 160         default n
 161         help
 162           This is needed to be able to allocate uncachable memory regions.
 163           The feature requires the design to define the RAM memory controller
 164           window to be twice as large as the actual physical memory.
 165
 166 config HIGHMEM_START_BOOL
 167         bool "Set high memory pool address"
 168         depends on ADVANCED_OPTIONS && HIGHMEM
 169         help
 170           This option allows you to set the base address of the kernel virtual
 171           area used to map high memory pages.  This can be useful in
 172           optimizing the layout of kernel virtual memory.
 173
 174           Say N here unless you know what you are doing.
 175
 176 config HIGHMEM_START
 177         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 178         depends on MMU
 179         default "0xfe000000"
 180
 181 config LOWMEM_SIZE_BOOL
 182         bool "Set maximum low memory"
 183         depends on ADVANCED_OPTIONS && MMU
 184         help
 185           This option allows you to set the maximum amount of memory which
 186           will be used as "low memory", that is, memory which the kernel can
 187           access directly, without having to set up a kernel virtual mapping.
 188           This can be useful in optimizing the layout of kernel virtual
 189           memory.
 190
 191           Say N here unless you know what you are doing.
 192
 193 config LOWMEM_SIZE
 194         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 195         default "0x30000000"
 196
 197 config KERNEL_START_BOOL
 198         bool "Set custom kernel base address"
 199         depends on ADVANCED_OPTIONS
 200         help
 201           This option allows you to set the kernel virtual address at which
 202           the kernel will map low memory (the kernel image will be linked at
 203           this address).  This can be useful in optimizing the virtual memory
 204           layout of the system.
 205
 206           Say N here unless you know what you are doing.
 207
 208 config KERNEL_START
 209         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 210         default "0xc0000000" if MMU
 211         default KERNEL_BASE_ADDR if !MMU
 212
 213 config TASK_SIZE_BOOL
 214         bool "Set custom user task size"
 215         depends on ADVANCED_OPTIONS && MMU
 216         help
 217           This option allows you to set the amount of virtual address space
 218           allocated to user tasks.  This can be useful in optimizing the
 219           virtual memory layout of the system.
 220
 221           Say N here unless you know what you are doing.
 222
 223 config TASK_SIZE
 224         hex "Size of user task space" if TASK_SIZE_BOOL
 225         default "0x80000000"
 226
 227 choice
 228         prompt "Page size"
 229         default MICROBLAZE_4K_PAGES
 230         depends on ADVANCED_OPTIONS && !MMU
 231         help
 232           Select the kernel logical page size. Increasing the page size
 233           will reduce software overhead at each page boundary, allow
 234           hardware prefetch mechanisms to be more effective, and allow
 235           larger dma transfers increasing IO efficiency and reducing
 236           overhead. However the utilization of memory will increase.
 237           For example, each cached file will using a multiple of the
 238           page size to hold its contents and the difference between the
 239           end of file and the end of page is wasted.
 240
 241           If unsure, choose 4K_PAGES.
 242
 243 config MICROBLAZE_4K_PAGES
 244         bool "4k page size"
 245
 246 config MICROBLAZE_8K_PAGES
 247         bool "8k page size"
 248
 249 config MICROBLAZE_16K_PAGES
 250         bool "16k page size"
 251
 252 config MICROBLAZE_32K_PAGES
 253         bool "32k page size"
 254
 255 endchoice
 256
 257 endmenu
 258
 259 source "mm/Kconfig"
 260
 261 menu "Exectuable file formats"
 262
 263 source "fs/Kconfig.binfmt"
 264
 265 endmenu
 266
 267 menu "Bus Options"
 268
 269 config PCI
 270         bool "PCI support"
 271
 272 config PCI_DOMAINS
 273         def_bool PCI
 274
 275 config PCI_SYSCALL
 276         def_bool PCI
 277
 278 config PCI_XILINX
 279         bool "Xilinx PCI host bridge support"
 280         depends on PCI
 281
 282 source "drivers/pci/Kconfig"
 283
 284 endmenu
 285
 286 source "net/Kconfig"
 287
 288 source "drivers/Kconfig"
 289
 290 source "fs/Kconfig"
 291
 292 source "arch/microblaze/Kconfig.debug"
 293
 294 source "security/Kconfig"
 295
 296 source "crypto/Kconfig"
 297
 298 source "lib/Kconfig"