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