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 HAVE_DEBUG_KMEMLEAK
  20        select IRQ_DOMAIN
  21        select HAVE_GENERIC_HARDIRQS
  22        select VIRT_TO_BUS
  23        select GENERIC_IRQ_PROBE
  24        select GENERIC_IRQ_SHOW
  25        select GENERIC_PCI_IOMAP
  26        select GENERIC_CPU_DEVICES
  27        select GENERIC_ATOMIC64
  28        select GENERIC_CLOCKEVENTS
  29        select GENERIC_IDLE_POLL_SETUP
  30        select MODULES_USE_ELF_RELA
  31        select CLONE_BACKWARDS3
  32
  33config SWAP
  34        def_bool n
  35
  36config RWSEM_GENERIC_SPINLOCK
  37        def_bool y
  38
  39config ZONE_DMA
  40        def_bool y
  41
  42config RWSEM_XCHGADD_ALGORITHM
  43        bool
  44
  45config ARCH_HAS_ILOG2_U32
  46        def_bool n
  47
  48config ARCH_HAS_ILOG2_U64
  49        def_bool n
  50
  51config GENERIC_HWEIGHT
  52        def_bool y
  53
  54config GENERIC_CALIBRATE_DELAY
  55        def_bool y
  56
  57config GENERIC_CSUM
  58        def_bool y
  59
  60config STACKTRACE_SUPPORT
  61        def_bool y
  62
  63config LOCKDEP_SUPPORT
  64        def_bool y
  65
  66config HAVE_LATENCYTOP_SUPPORT
  67        def_bool y
  68
  69source "init/Kconfig"
  70
  71source "kernel/Kconfig.freezer"
  72
  73source "arch/microblaze/platform/Kconfig.platform"
  74
  75menu "Processor type and features"
  76
  77source "kernel/Kconfig.preempt"
  78
  79source "kernel/Kconfig.hz"
  80
  81config MMU
  82        bool "MMU support"
  83        default n
  84
  85config NO_MMU
  86        bool
  87        depends on !MMU
  88        default y
  89
  90comment "Boot options"
  91
  92config CMDLINE_BOOL
  93        bool "Default bootloader kernel arguments"
  94
  95config CMDLINE
  96        string "Default kernel command string"
  97        depends on CMDLINE_BOOL
  98        default "console=ttyUL0,115200"
  99        help
 100          On some architectures there is currently no way for the boot loader
 101          to pass arguments to the kernel. For these architectures, you should
 102          supply some command-line options at build time by entering them
 103          here.
 104
 105config CMDLINE_FORCE
 106        bool "Force default kernel command string"
 107        depends on CMDLINE_BOOL
 108        default n
 109        help
 110          Set this to have arguments from the default kernel command string
 111          override those passed by the boot loader.
 112
 113config SECCOMP
 114        bool "Enable seccomp to safely compute untrusted bytecode"
 115        depends on PROC_FS
 116        default y
 117        help
 118          This kernel feature is useful for number crunching applications
 119          that may need to compute untrusted bytecode during their
 120          execution. By using pipes or other transports made available to
 121          the process as file descriptors supporting the read/write
 122          syscalls, it's possible to isolate those applications in
 123          their own address space using seccomp. Once seccomp is
 124          enabled via /proc/<pid>/seccomp, it cannot be disabled
 125          and the task is only allowed to execute a few safe syscalls
 126          defined by each seccomp mode.
 127
 128          If unsure, say Y. Only embedded should say N here.
 129
 130endmenu
 131
 132menu "Advanced setup"
 133
 134config ADVANCED_OPTIONS
 135        bool "Prompt for advanced kernel configuration options"
 136        help
 137          This option will enable prompting for a variety of advanced kernel
 138          configuration options.  These options can cause the kernel to not
 139          work if they are set incorrectly, but can be used to optimize certain
 140          aspects of kernel memory management.
 141
 142          Unless you know what you are doing, say N here.
 143
 144comment "Default settings for advanced configuration options are used"
 145        depends on !ADVANCED_OPTIONS
 146
 147config XILINX_UNCACHED_SHADOW
 148        bool "Are you using uncached shadow for RAM ?"
 149        depends on ADVANCED_OPTIONS && !MMU
 150        default n
 151        help
 152          This is needed to be able to allocate uncachable memory regions.
 153          The feature requires the design to define the RAM memory controller
 154          window to be twice as large as the actual physical memory.
 155
 156config HIGHMEM
 157        bool "High memory support"
 158        depends on MMU
 159        help
 160          The address space of Microblaze processors is only 4 Gigabytes large
 161          and it has to accommodate user address space, kernel address
 162          space as well as some memory mapped IO. That means that, if you
 163          have a large amount of physical memory and/or IO, not all of the
 164          memory can be "permanently mapped" by the kernel. The physical
 165          memory that is not permanently mapped is called "high memory".
 166
 167          If unsure, say n.
 168
 169config LOWMEM_SIZE_BOOL
 170        bool "Set maximum low memory"
 171        depends on ADVANCED_OPTIONS && MMU
 172        help
 173          This option allows you to set the maximum amount of memory which
 174          will be used as "low memory", that is, memory which the kernel can
 175          access directly, without having to set up a kernel virtual mapping.
 176          This can be useful in optimizing the layout of kernel virtual
 177          memory.
 178
 179          Say N here unless you know what you are doing.
 180
 181config LOWMEM_SIZE
 182        hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 183        default "0x30000000"
 184
 185config MANUAL_RESET_VECTOR
 186        hex "Microblaze reset vector address setup"
 187        default "0x0"
 188        help
 189          Set this option to have the kernel override the CPU Reset vector.
 190          If zero, no change will be made to the MicroBlaze reset vector at
 191          address 0x0.
 192          If non-zero, a jump instruction to this address, will be written
 193          to the reset vector at address 0x0.
 194          If you are unsure, set it to default value 0x0.
 195
 196config KERNEL_START_BOOL
 197        bool "Set custom kernel base address"
 198        depends on ADVANCED_OPTIONS
 199        help
 200          This option allows you to set the kernel virtual address at which
 201          the kernel will map low memory (the kernel image will be linked at
 202          this address).  This can be useful in optimizing the virtual memory
 203          layout of the system.
 204
 205          Say N here unless you know what you are doing.
 206
 207config KERNEL_START
 208        hex "Virtual address of kernel base" if KERNEL_START_BOOL
 209        default "0xc0000000" if MMU
 210        default KERNEL_BASE_ADDR if !MMU
 211
 212config TASK_SIZE_BOOL
 213        bool "Set custom user task size"
 214        depends on ADVANCED_OPTIONS && MMU
 215        help
 216          This option allows you to set the amount of virtual address space
 217          allocated to user tasks.  This can be useful in optimizing the
 218          virtual memory layout of the system.
 219
 220          Say N here unless you know what you are doing.
 221
 222config TASK_SIZE
 223        hex "Size of user task space" if TASK_SIZE_BOOL
 224        default "0x80000000"
 225
 226choice
 227        prompt "Page size"
 228        default MICROBLAZE_4K_PAGES
 229        depends on ADVANCED_OPTIONS && !MMU
 230        help
 231          Select the kernel logical page size. Increasing the page size
 232          will reduce software overhead at each page boundary, allow
 233          hardware prefetch mechanisms to be more effective, and allow
 234          larger dma transfers increasing IO efficiency and reducing
 235          overhead. However the utilization of memory will increase.
 236          For example, each cached file will using a multiple of the
 237          page size to hold its contents and the difference between the
 238          end of file and the end of page is wasted.
 239
 240          If unsure, choose 4K_PAGES.
 241
 242config MICROBLAZE_4K_PAGES
 243        bool "4k page size"
 244
 245config MICROBLAZE_16K_PAGES
 246        bool "16k page size"
 247
 248config MICROBLAZE_64K_PAGES
 249        bool "64k page size"
 250
 251endchoice
 252
 253config KERNEL_PAD
 254        hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 255        default "0x80000" if MMU
 256
 257endmenu
 258
 259source "mm/Kconfig"
 260
 261menu "Executable file formats"
 262
 263source "fs/Kconfig.binfmt"
 264
 265endmenu
 266
 267menu "Bus Options"
 268
 269config PCI
 270        bool "PCI support"
 271
 272config PCI_DOMAINS
 273        def_bool PCI
 274
 275config PCI_SYSCALL
 276        def_bool PCI
 277
 278config PCI_XILINX
 279        bool "Xilinx PCI host bridge support"
 280        depends on PCI
 281
 282source "drivers/pci/Kconfig"
 283
 284endmenu
 285
 286source "net/Kconfig"
 287
 288source "drivers/Kconfig"
 289
 290source "fs/Kconfig"
 291
 292source "arch/microblaze/Kconfig.debug"
 293
 294source "security/Kconfig"
 295
 296source "crypto/Kconfig"
 297
 298source "lib/Kconfig"
 299
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