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 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
  30 config SWAP
  31         def_bool n
  32
  33 config RWSEM_GENERIC_SPINLOCK
  34         def_bool y
  35
  36 config ZONE_DMA
  37         def_bool y
  38
  39 config ARCH_POPULATES_NODE_MAP
  40         def_bool y
  41
  42 config RWSEM_XCHGADD_ALGORITHM
  43         bool
  44
  45 config ARCH_HAS_ILOG2_U32
  46         def_bool n
  47
  48 config ARCH_HAS_ILOG2_U64
  49         def_bool n
  50
  51 config GENERIC_HWEIGHT
  52         def_bool y
  53
  54 config GENERIC_CALIBRATE_DELAY
  55         def_bool y
  56
  57 config GENERIC_GPIO
  58         bool
  59
  60 config GENERIC_CSUM
  61         def_bool y
  62
  63 config STACKTRACE_SUPPORT
  64         def_bool y
  65
  66 config LOCKDEP_SUPPORT
  67         def_bool y
  68
  69 config HAVE_LATENCYTOP_SUPPORT
  70         def_bool y
  71
  72 source "init/Kconfig"
  73
  74 source "kernel/Kconfig.freezer"
  75
  76 source "arch/microblaze/platform/Kconfig.platform"
  77
  78 menu "Processor type and features"
  79
  80 source "kernel/Kconfig.preempt"
  81
  82 source "kernel/Kconfig.hz"
  83
  84 config MMU
  85         bool "MMU support"
  86         default n
  87
  88 config NO_MMU
  89         bool
  90         depends on !MMU
  91         default y
  92
  93 comment "Boot options"
  94
  95 config CMDLINE_BOOL
  96         bool "Default bootloader kernel arguments"
  97
  98 config 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
 108 config 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
 116 config 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
 133 endmenu
 134
 135 menu "Advanced setup"
 136
 137 config 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
 147 comment "Default settings for advanced configuration options are used"
 148         depends on !ADVANCED_OPTIONS
 149
 150 config 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
 159 config 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
 172 config 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
 184 config LOWMEM_SIZE
 185         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 186         default "0x30000000"
 187
 188 config 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
 199 config 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
 210 config 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
 215 config 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
 225 config TASK_SIZE
 226         hex "Size of user task space" if TASK_SIZE_BOOL
 227         default "0x80000000"
 228
 229 choice
 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
 245 config MICROBLAZE_4K_PAGES
 246         bool "4k page size"
 247
 248 config MICROBLAZE_16K_PAGES
 249         bool "16k page size"
 250
 251 config MICROBLAZE_64K_PAGES
 252         bool "64k page size"
 253
 254 endchoice
 255
 256 config KERNEL_PAD
 257         hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 258         default "0x80000" if MMU
 259
 260 endmenu
 261
 262 source "mm/Kconfig"
 263
 264 menu "Executable file formats"
 265
 266 source "fs/Kconfig.binfmt"
 267
 268 endmenu
 269
 270 menu "Bus Options"
 271
 272 config PCI
 273         bool "PCI support"
 274
 275 config PCI_DOMAINS
 276         def_bool PCI
 277
 278 config PCI_SYSCALL
 279         def_bool PCI
 280
 281 config PCI_XILINX
 282         bool "Xilinx PCI host bridge support"
 283         depends on PCI
 284
 285 source "drivers/pci/Kconfig"
 286
 287 endmenu
 288
 289 source "net/Kconfig"
 290
 291 source "drivers/Kconfig"
 292
 293 source "fs/Kconfig"
 294
 295 source "arch/microblaze/Kconfig.debug"
 296
 297 source "security/Kconfig"
 298
 299 source "crypto/Kconfig"
 300
 301 source "lib/Kconfig"