arch/microblaze/Kconfig

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