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 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
  28 config SWAP
  29         def_bool n
  30
  31 config RWSEM_GENERIC_SPINLOCK
  32         def_bool y
  33
  34 config ZONE_DMA
  35         def_bool y
  36
  37 config ARCH_POPULATES_NODE_MAP
  38         def_bool y
  39
  40 config RWSEM_XCHGADD_ALGORITHM
  41         bool
  42
  43 config ARCH_HAS_ILOG2_U32
  44         def_bool n
  45
  46 config ARCH_HAS_ILOG2_U64
  47         def_bool n
  48
  49 config GENERIC_HWEIGHT
  50         def_bool y
  51
  52 config GENERIC_CALIBRATE_DELAY
  53         def_bool y
  54
  55 config GENERIC_GPIO
  56         bool
  57
  58 config GENERIC_CSUM
  59         def_bool y
  60
  61 config STACKTRACE_SUPPORT
  62         def_bool y
  63
  64 config LOCKDEP_SUPPORT
  65         def_bool y
  66
  67 config HAVE_LATENCYTOP_SUPPORT
  68         def_bool y
  69
  70 source "init/Kconfig"
  71
  72 source "kernel/Kconfig.freezer"
  73
  74 source "arch/microblaze/platform/Kconfig.platform"
  75
  76 menu "Processor type and features"
  77
  78 source "kernel/Kconfig.preempt"
  79
  80 source "kernel/Kconfig.hz"
  81
  82 config MMU
  83         bool "MMU support"
  84         default n
  85
  86 config NO_MMU
  87         bool
  88         depends on !MMU
  89         default y
  90
  91 comment "Boot options"
  92
  93 config CMDLINE_BOOL
  94         bool "Default bootloader kernel arguments"
  95
  96 config 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
 106 config 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
 114 config 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
 131 endmenu
 132
 133 menu "Advanced setup"
 134
 135 config 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
 145 comment "Default settings for advanced configuration options are used"
 146         depends on !ADVANCED_OPTIONS
 147
 148 config 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
 157 config 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
 170 config 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
 182 config LOWMEM_SIZE
 183         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 184         default "0x30000000"
 185
 186 config 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
 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 config KERNEL_PAD
 258         hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 259         default "0x80000" if MMU
 260
 261 endmenu
 262
 263 source "mm/Kconfig"
 264
 265 menu "Executable file formats"
 266
 267 source "fs/Kconfig.binfmt"
 268
 269 endmenu
 270
 271 menu "Bus Options"
 272
 273 config PCI
 274         bool "PCI support"
 275
 276 config PCI_DOMAINS
 277         def_bool PCI
 278
 279 config PCI_SYSCALL
 280         def_bool PCI
 281
 282 config PCI_XILINX
 283         bool "Xilinx PCI host bridge support"
 284         depends on PCI
 285
 286 source "drivers/pci/Kconfig"
 287
 288 endmenu
 289
 290 source "net/Kconfig"
 291
 292 source "drivers/Kconfig"
 293
 294 source "fs/Kconfig"
 295
 296 source "arch/microblaze/Kconfig.debug"
 297
 298 source "security/Kconfig"
 299
 300 source "crypto/Kconfig"
 301
 302 source "lib/Kconfig"