arch/microblaze/Kconfig

   1 config MICROBLAZE
   2         def_bool y
   3         select HAVE_MEMBLOCK
   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
  11         select HAVE_OPROFILE
  12         select HAVE_ARCH_KGDB
  13         select HAVE_DMA_ATTRS
  14         select HAVE_DMA_API_DEBUG
  15         select TRACING_SUPPORT
  16         select OF
  17         select OF_EARLY_FLATTREE
  18         select IRQ_DOMAIN
  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
  25
  26 config SWAP
  27         def_bool n
  28
  29 config RWSEM_GENERIC_SPINLOCK
  30         def_bool y
  31
  32 config ZONE_DMA
  33         def_bool y
  34
  35 config ARCH_POPULATES_NODE_MAP
  36         def_bool y
  37
  38 config RWSEM_XCHGADD_ALGORITHM
  39         bool
  40
  41 config ARCH_HAS_ILOG2_U32
  42         def_bool n
  43
  44 config ARCH_HAS_ILOG2_U64
  45         def_bool n
  46
  47 config GENERIC_HWEIGHT
  48         def_bool y
  49
  50 config GENERIC_CALIBRATE_DELAY
  51         def_bool y
  52
  53 config GENERIC_TIME_VSYSCALL
  54         def_bool n
  55
  56 config GENERIC_CLOCKEVENTS
  57         def_bool y
  58
  59 config GENERIC_GPIO
  60         def_bool y
  61
  62 config GENERIC_CSUM
  63         def_bool y
  64
  65 config STACKTRACE_SUPPORT
  66         def_bool y
  67
  68 config LOCKDEP_SUPPORT
  69         def_bool y
  70
  71 config HAVE_LATENCYTOP_SUPPORT
  72         def_bool y
  73
  74 source "init/Kconfig"
  75
  76 source "kernel/Kconfig.freezer"
  77
  78 source "arch/microblaze/platform/Kconfig.platform"
  79
  80 menu "Processor type and features"
  81
  82 source "kernel/time/Kconfig"
  83
  84 source "kernel/Kconfig.preempt"
  85
  86 source "kernel/Kconfig.hz"
  87
  88 config MMU
  89         bool "MMU support"
  90         default n
  91
  92 config NO_MMU
  93         bool
  94         depends on !MMU
  95         default y
  96
  97 comment "Boot options"
  98
  99 config CMDLINE_BOOL
 100         bool "Default bootloader kernel arguments"
 101
 102 config CMDLINE
 103         string "Default kernel command string"
 104         depends on CMDLINE_BOOL
 105         default "console=ttyUL0,115200"
 106         help
 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
 110           here.
 111
 112 config CMDLINE_FORCE
 113         bool "Force default kernel command string"
 114         depends on CMDLINE_BOOL
 115         default n
 116         help
 117           Set this to have arguments from the default kernel command string
 118           override those passed by the boot loader.
 119
 120 config SECCOMP
 121         bool "Enable seccomp to safely compute untrusted bytecode"
 122         depends on PROC_FS
 123         default y
 124         help
 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.
 134
 135           If unsure, say Y. Only embedded should say N here.
 136
 137 endmenu
 138
 139 menu "Advanced setup"
 140
 141 config ADVANCED_OPTIONS
 142         bool "Prompt for advanced kernel configuration options"
 143         help
 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.
 148
 149           Unless you know what you are doing, say N here.
 150
 151 comment "Default settings for advanced configuration options are used"
 152         depends on !ADVANCED_OPTIONS
 153
 154 config XILINX_UNCACHED_SHADOW
 155         bool "Are you using uncached shadow for RAM ?"
 156         depends on ADVANCED_OPTIONS && !MMU
 157         default n
 158         help
 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.
 162
 163 config HIGHMEM
 164         bool "High memory support"
 165         depends on MMU
 166         help
 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".
 173
 174           If unsure, say n.
 175
 176 config LOWMEM_SIZE_BOOL
 177         bool "Set maximum low memory"
 178         depends on ADVANCED_OPTIONS && MMU
 179         help
 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
 184           memory.
 185
 186           Say N here unless you know what you are doing.
 187
 188 config LOWMEM_SIZE
 189         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 190         default "0x30000000"
 191
 192 config MANUAL_RESET_VECTOR
 193         hex "Microblaze reset vector address setup"
 194         default "0x0"
 195         help
 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
 198           address 0x0.
 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.
 202
 203 config KERNEL_START_BOOL
 204         bool "Set custom kernel base address"
 205         depends on ADVANCED_OPTIONS
 206         help
 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.
 211
 212           Say N here unless you know what you are doing.
 213
 214 config KERNEL_START
 215         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 216         default "0xc0000000" if MMU
 217         default KERNEL_BASE_ADDR if !MMU
 218
 219 config TASK_SIZE_BOOL
 220         bool "Set custom user task size"
 221         depends on ADVANCED_OPTIONS && MMU
 222         help
 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.
 226
 227           Say N here unless you know what you are doing.
 228
 229 config TASK_SIZE
 230         hex "Size of user task space" if TASK_SIZE_BOOL
 231         default "0x80000000"
 232
 233 choice
 234         prompt "Page size"
 235         default MICROBLAZE_4K_PAGES
 236         depends on ADVANCED_OPTIONS && !MMU
 237         help
 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.
 246
 247           If unsure, choose 4K_PAGES.
 248
 249 config MICROBLAZE_4K_PAGES
 250         bool "4k page size"
 251
 252 config MICROBLAZE_8K_PAGES
 253         bool "8k page size"
 254
 255 config MICROBLAZE_16K_PAGES
 256         bool "16k page size"
 257
 258 config MICROBLAZE_32K_PAGES
 259         bool "32k page size"
 260
 261 endchoice
 262
 263 config KERNEL_PAD
 264         hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 265         default "0x80000" if MMU
 266
 267 endmenu
 268
 269 source "mm/Kconfig"
 270
 271 menu "Executable file formats"
 272
 273 source "fs/Kconfig.binfmt"
 274
 275 endmenu
 276
 277 menu "Bus Options"
 278
 279 config PCI
 280         bool "PCI support"
 281
 282 config PCI_DOMAINS
 283         def_bool PCI
 284
 285 config PCI_SYSCALL
 286         def_bool PCI
 287
 288 config PCI_XILINX
 289         bool "Xilinx PCI host bridge support"
 290         depends on PCI
 291
 292 source "drivers/pci/Kconfig"
 293
 294 endmenu
 295
 296 source "net/Kconfig"
 297
 298 source "drivers/Kconfig"
 299
 300 source "fs/Kconfig"
 301
 302 source "arch/microblaze/Kconfig.debug"
 303
 304 source "security/Kconfig"
 305
 306 source "crypto/Kconfig"
 307
 308 source "lib/Kconfig"