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 GENERIC_IRQ_PROBE
  23        select GENERIC_IRQ_SHOW
  24        select GENERIC_PCI_IOMAP
  25        select GENERIC_CPU_DEVICES
  26        select GENERIC_ATOMIC64
  27        select GENERIC_CLOCKEVENTS
  28        select MODULES_USE_ELF_RELA
  29
  30config SWAP
  31        def_bool n
  32
  33config RWSEM_GENERIC_SPINLOCK
  34        def_bool y
  35
  36config ZONE_DMA
  37        def_bool y
  38
  39config ARCH_POPULATES_NODE_MAP
  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_GPIO
  58        bool
  59
  60config GENERIC_CSUM
  61        def_bool y
  62
  63config STACKTRACE_SUPPORT
  64        def_bool y
  65
  66config LOCKDEP_SUPPORT
  67        def_bool y
  68
  69config HAVE_LATENCYTOP_SUPPORT
  70        def_bool y
  71
  72source "init/Kconfig"
  73
  74source "kernel/Kconfig.freezer"
  75
  76source "arch/microblaze/platform/Kconfig.platform"
  77
  78menu "Processor type and features"
  79
  80source "kernel/Kconfig.preempt"
  81
  82source "kernel/Kconfig.hz"
  83
  84config MMU
  85        bool "MMU support"
  86        default n
  87
  88config NO_MMU
  89        bool
  90        depends on !MMU
  91        default y
  92
  93comment "Boot options"
  94
  95config CMDLINE_BOOL
  96        bool "Default bootloader kernel arguments"
  97
  98config CMDLINE
  99        string "Default kernel command string"
 100        depends on CMDLINE_BOOL
 101        default "console=ttyUL0,115200"
 102        help
 103          On some architectures there is currently no way for the boot loader
 104          to pass arguments to the kernel. For these architectures, you should
 105          supply some command-line options at build time by entering them
 106          here.
 107
 108config CMDLINE_FORCE
 109        bool "Force default kernel command string"
 110        depends on CMDLINE_BOOL
 111        default n
 112        help
 113          Set this to have arguments from the default kernel command string
 114          override those passed by the boot loader.
 115
 116config SECCOMP
 117        bool "Enable seccomp to safely compute untrusted bytecode"
 118        depends on PROC_FS
 119        default y
 120        help
 121          This kernel feature is useful for number crunching applications
 122          that may need to compute untrusted bytecode during their
 123          execution. By using pipes or other transports made available to
 124          the process as file descriptors supporting the read/write
 125          syscalls, it's possible to isolate those applications in
 126          their own address space using seccomp. Once seccomp is
 127          enabled via /proc/<pid>/seccomp, it cannot be disabled
 128          and the task is only allowed to execute a few safe syscalls
 129          defined by each seccomp mode.
 130
 131          If unsure, say Y. Only embedded should say N here.
 132
 133endmenu
 134
 135menu "Advanced setup"
 136
 137config ADVANCED_OPTIONS
 138        bool "Prompt for advanced kernel configuration options"
 139        help
 140          This option will enable prompting for a variety of advanced kernel
 141          configuration options.  These options can cause the kernel to not
 142          work if they are set incorrectly, but can be used to optimize certain
 143          aspects of kernel memory management.
 144
 145          Unless you know what you are doing, say N here.
 146
 147comment "Default settings for advanced configuration options are used"
 148        depends on !ADVANCED_OPTIONS
 149
 150config XILINX_UNCACHED_SHADOW
 151        bool "Are you using uncached shadow for RAM ?"
 152        depends on ADVANCED_OPTIONS && !MMU
 153        default n
 154        help
 155          This is needed to be able to allocate uncachable memory regions.
 156          The feature requires the design to define the RAM memory controller
 157          window to be twice as large as the actual physical memory.
 158
 159config HIGHMEM
 160        bool "High memory support"
 161        depends on MMU
 162        help
 163          The address space of Microblaze processors is only 4 Gigabytes large
 164          and it has to accommodate user address space, kernel address
 165          space as well as some memory mapped IO. That means that, if you
 166          have a large amount of physical memory and/or IO, not all of the
 167          memory can be "permanently mapped" by the kernel. The physical
 168          memory that is not permanently mapped is called "high memory".
 169
 170          If unsure, say n.
 171
 172config LOWMEM_SIZE_BOOL
 173        bool "Set maximum low memory"
 174        depends on ADVANCED_OPTIONS && MMU
 175        help
 176          This option allows you to set the maximum amount of memory which
 177          will be used as "low memory", that is, memory which the kernel can
 178          access directly, without having to set up a kernel virtual mapping.
 179          This can be useful in optimizing the layout of kernel virtual
 180          memory.
 181
 182          Say N here unless you know what you are doing.
 183
 184config LOWMEM_SIZE
 185        hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 186        default "0x30000000"
 187
 188config MANUAL_RESET_VECTOR
 189        hex "Microblaze reset vector address setup"
 190        default "0x0"
 191        help
 192          Set this option to have the kernel override the CPU Reset vector.
 193          If zero, no change will be made to the MicroBlaze reset vector at
 194          address 0x0.
 195          If non-zero, a jump instruction to this address, will be written
 196          to the reset vector at address 0x0.
 197          If you are unsure, set it to default value 0x0.
 198
 199config KERNEL_START_BOOL
 200        bool "Set custom kernel base address"
 201        depends on ADVANCED_OPTIONS
 202        help
 203          This option allows you to set the kernel virtual address at which
 204          the kernel will map low memory (the kernel image will be linked at
 205          this address).  This can be useful in optimizing the virtual memory
 206          layout of the system.
 207
 208          Say N here unless you know what you are doing.
 209
 210config KERNEL_START
 211        hex "Virtual address of kernel base" if KERNEL_START_BOOL
 212        default "0xc0000000" if MMU
 213        default KERNEL_BASE_ADDR if !MMU
 214
 215config TASK_SIZE_BOOL
 216        bool "Set custom user task size"
 217        depends on ADVANCED_OPTIONS && MMU
 218        help
 219          This option allows you to set the amount of virtual address space
 220          allocated to user tasks.  This can be useful in optimizing the
 221          virtual memory layout of the system.
 222
 223          Say N here unless you know what you are doing.
 224
 225config TASK_SIZE
 226        hex "Size of user task space" if TASK_SIZE_BOOL
 227        default "0x80000000"
 228
 229choice
 230        prompt "Page size"
 231        default MICROBLAZE_4K_PAGES
 232        depends on ADVANCED_OPTIONS && !MMU
 233        help
 234          Select the kernel logical page size. Increasing the page size
 235          will reduce software overhead at each page boundary, allow
 236          hardware prefetch mechanisms to be more effective, and allow
 237          larger dma transfers increasing IO efficiency and reducing
 238          overhead. However the utilization of memory will increase.
 239          For example, each cached file will using a multiple of the
 240          page size to hold its contents and the difference between the
 241          end of file and the end of page is wasted.
 242
 243          If unsure, choose 4K_PAGES.
 244
 245config MICROBLAZE_4K_PAGES
 246        bool "4k page size"
 247
 248config MICROBLAZE_16K_PAGES
 249        bool "16k page size"
 250
 251config MICROBLAZE_64K_PAGES
 252        bool "64k page size"
 253
 254endchoice
 255
 256config KERNEL_PAD
 257        hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 258        default "0x80000" if MMU
 259
 260endmenu
 261
 262source "mm/Kconfig"
 263
 264menu "Executable file formats"
 265
 266source "fs/Kconfig.binfmt"
 267
 268endmenu
 269
 270menu "Bus Options"
 271
 272config PCI
 273        bool "PCI support"
 274
 275config PCI_DOMAINS
 276        def_bool PCI
 277
 278config PCI_SYSCALL
 279        def_bool PCI
 280
 281config PCI_XILINX
 282        bool "Xilinx PCI host bridge support"
 283        depends on PCI
 284
 285source "drivers/pci/Kconfig"
 286
 287endmenu
 288
 289source "net/Kconfig"
 290
 291source "drivers/Kconfig"
 292
 293source "fs/Kconfig"
 294
 295source "arch/microblaze/Kconfig.debug"
 296
 297source "security/Kconfig"
 298
 299source "crypto/Kconfig"
 300
 301source "lib/Kconfig"
 302
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