linux/arch/microblaze/Kconfig
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   1config 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 ARCH_WANT_IPC_PARSE_VERSION
  19        select IRQ_DOMAIN
  20        select HAVE_GENERIC_HARDIRQS
  21        select GENERIC_IRQ_PROBE
  22        select GENERIC_IRQ_SHOW
  23        select GENERIC_PCI_IOMAP
  24        select GENERIC_CPU_DEVICES
  25        select GENERIC_ATOMIC64
  26        select GENERIC_CLOCKEVENTS
  27
  28config SWAP
  29        def_bool n
  30
  31config RWSEM_GENERIC_SPINLOCK
  32        def_bool y
  33
  34config ZONE_DMA
  35        def_bool y
  36
  37config ARCH_POPULATES_NODE_MAP
  38        def_bool y
  39
  40config RWSEM_XCHGADD_ALGORITHM
  41        bool
  42
  43config ARCH_HAS_ILOG2_U32
  44        def_bool n
  45
  46config ARCH_HAS_ILOG2_U64
  47        def_bool n
  48
  49config GENERIC_HWEIGHT
  50        def_bool y
  51
  52config GENERIC_CALIBRATE_DELAY
  53        def_bool y
  54
  55config GENERIC_GPIO
  56        bool
  57
  58config GENERIC_CSUM
  59        def_bool y
  60
  61config STACKTRACE_SUPPORT
  62        def_bool y
  63
  64config LOCKDEP_SUPPORT
  65        def_bool y
  66
  67config HAVE_LATENCYTOP_SUPPORT
  68        def_bool y
  69
  70source "init/Kconfig"
  71
  72source "kernel/Kconfig.freezer"
  73
  74source "arch/microblaze/platform/Kconfig.platform"
  75
  76menu "Processor type and features"
  77
  78source "kernel/Kconfig.preempt"
  79
  80source "kernel/Kconfig.hz"
  81
  82config MMU
  83        bool "MMU support"
  84        default n
  85
  86config NO_MMU
  87        bool
  88        depends on !MMU
  89        default y
  90
  91comment "Boot options"
  92
  93config CMDLINE_BOOL
  94        bool "Default bootloader kernel arguments"
  95
  96config CMDLINE
  97        string "Default kernel command string"
  98        depends on CMDLINE_BOOL
  99        default "console=ttyUL0,115200"
 100        help
 101          On some architectures there is currently no way for the boot loader
 102          to pass arguments to the kernel. For these architectures, you should
 103          supply some command-line options at build time by entering them
 104          here.
 105
 106config CMDLINE_FORCE
 107        bool "Force default kernel command string"
 108        depends on CMDLINE_BOOL
 109        default n
 110        help
 111          Set this to have arguments from the default kernel command string
 112          override those passed by the boot loader.
 113
 114config SECCOMP
 115        bool "Enable seccomp to safely compute untrusted bytecode"
 116        depends on PROC_FS
 117        default y
 118        help
 119          This kernel feature is useful for number crunching applications
 120          that may need to compute untrusted bytecode during their
 121          execution. By using pipes or other transports made available to
 122          the process as file descriptors supporting the read/write
 123          syscalls, it's possible to isolate those applications in
 124          their own address space using seccomp. Once seccomp is
 125          enabled via /proc/<pid>/seccomp, it cannot be disabled
 126          and the task is only allowed to execute a few safe syscalls
 127          defined by each seccomp mode.
 128
 129          If unsure, say Y. Only embedded should say N here.
 130
 131endmenu
 132
 133menu "Advanced setup"
 134
 135config ADVANCED_OPTIONS
 136        bool "Prompt for advanced kernel configuration options"
 137        help
 138          This option will enable prompting for a variety of advanced kernel
 139          configuration options.  These options can cause the kernel to not
 140          work if they are set incorrectly, but can be used to optimize certain
 141          aspects of kernel memory management.
 142
 143          Unless you know what you are doing, say N here.
 144
 145comment "Default settings for advanced configuration options are used"
 146        depends on !ADVANCED_OPTIONS
 147
 148config XILINX_UNCACHED_SHADOW
 149        bool "Are you using uncached shadow for RAM ?"
 150        depends on ADVANCED_OPTIONS && !MMU
 151        default n
 152        help
 153          This is needed to be able to allocate uncachable memory regions.
 154          The feature requires the design to define the RAM memory controller
 155          window to be twice as large as the actual physical memory.
 156
 157config HIGHMEM
 158        bool "High memory support"
 159        depends on MMU
 160        help
 161          The address space of Microblaze processors is only 4 Gigabytes large
 162          and it has to accommodate user address space, kernel address
 163          space as well as some memory mapped IO. That means that, if you
 164          have a large amount of physical memory and/or IO, not all of the
 165          memory can be "permanently mapped" by the kernel. The physical
 166          memory that is not permanently mapped is called "high memory".
 167
 168          If unsure, say n.
 169
 170config LOWMEM_SIZE_BOOL
 171        bool "Set maximum low memory"
 172        depends on ADVANCED_OPTIONS && MMU
 173        help
 174          This option allows you to set the maximum amount of memory which
 175          will be used as "low memory", that is, memory which the kernel can
 176          access directly, without having to set up a kernel virtual mapping.
 177          This can be useful in optimizing the layout of kernel virtual
 178          memory.
 179
 180          Say N here unless you know what you are doing.
 181
 182config LOWMEM_SIZE
 183        hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 184        default "0x30000000"
 185
 186config MANUAL_RESET_VECTOR
 187        hex "Microblaze reset vector address setup"
 188        default "0x0"
 189        help
 190          Set this option to have the kernel override the CPU Reset vector.
 191          If zero, no change will be made to the MicroBlaze reset vector at
 192          address 0x0.
 193          If non-zero, a jump instruction to this address, will be written
 194          to the reset vector at address 0x0.
 195          If you are unsure, set it to default value 0x0.
 196
 197config 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
 208config 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
 213config 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
 223config TASK_SIZE
 224        hex "Size of user task space" if TASK_SIZE_BOOL
 225        default "0x80000000"
 226
 227choice
 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
 243config MICROBLAZE_4K_PAGES
 244        bool "4k page size"
 245
 246config MICROBLAZE_8K_PAGES
 247        bool "8k page size"
 248
 249config MICROBLAZE_16K_PAGES
 250        bool "16k page size"
 251
 252config MICROBLAZE_32K_PAGES
 253        bool "32k page size"
 254
 255endchoice
 256
 257config KERNEL_PAD
 258        hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 259        default "0x80000" if MMU
 260
 261endmenu
 262
 263source "mm/Kconfig"
 264
 265menu "Executable file formats"
 266
 267source "fs/Kconfig.binfmt"
 268
 269endmenu
 270
 271menu "Bus Options"
 272
 273config PCI
 274        bool "PCI support"
 275
 276config PCI_DOMAINS
 277        def_bool PCI
 278
 279config PCI_SYSCALL
 280        def_bool PCI
 281
 282config PCI_XILINX
 283        bool "Xilinx PCI host bridge support"
 284        depends on PCI
 285
 286source "drivers/pci/Kconfig"
 287
 288endmenu
 289
 290source "net/Kconfig"
 291
 292source "drivers/Kconfig"
 293
 294source "fs/Kconfig"
 295
 296source "arch/microblaze/Kconfig.debug"
 297
 298source "security/Kconfig"
 299
 300source "crypto/Kconfig"
 301
 302source "lib/Kconfig"
 303
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