arch/microblaze/Kconfig

   1 config MICROBLAZE
   2         def_bool y
   3         select ARCH_HAS_GCOV_PROFILE_ALL
   4         select ARCH_MIGHT_HAVE_PC_PARPORT
   5         select ARCH_WANT_IPC_PARSE_VERSION
   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_HASH
  19         select HAVE_ARCH_KGDB
  20         select HAVE_DEBUG_KMEMLEAK
  21         select HAVE_DMA_API_DEBUG
  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         select CPU_NO_EFFICIENT_FFS
  36
  37 config SWAP
  38         def_bool n
  39
  40 config RWSEM_GENERIC_SPINLOCK
  41         def_bool y
  42
  43 config ZONE_DMA
  44         def_bool y
  45
  46 config RWSEM_XCHGADD_ALGORITHM
  47         bool
  48
  49 config ARCH_HAS_ILOG2_U32
  50         def_bool n
  51
  52 config ARCH_HAS_ILOG2_U64
  53         def_bool n
  54
  55 config GENERIC_HWEIGHT
  56         def_bool y
  57
  58 config GENERIC_CALIBRATE_DELAY
  59         def_bool y
  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 source "init/Kconfig"
  71
  72 source "kernel/Kconfig.freezer"
  73
  74 source "arch/microblaze/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 comment "Boot options"
  87
  88 config CMDLINE_BOOL
  89         bool "Default bootloader kernel arguments"
  90
  91 config CMDLINE
  92         string "Default kernel command string"
  93         depends on CMDLINE_BOOL
  94         default "console=ttyUL0,115200"
  95         help
  96           On some architectures there is currently no way for the boot loader
  97           to pass arguments to the kernel. For these architectures, you should
  98           supply some command-line options at build time by entering them
  99           here.
 100
 101 config CMDLINE_FORCE
 102         bool "Force default kernel command string"
 103         depends on CMDLINE_BOOL
 104         default n
 105         help
 106           Set this to have arguments from the default kernel command string
 107           override those passed by the boot loader.
 108
 109 config SECCOMP
 110         bool "Enable seccomp to safely compute untrusted bytecode"
 111         depends on PROC_FS
 112         default y
 113         help
 114           This kernel feature is useful for number crunching applications
 115           that may need to compute untrusted bytecode during their
 116           execution. By using pipes or other transports made available to
 117           the process as file descriptors supporting the read/write
 118           syscalls, it's possible to isolate those applications in
 119           their own address space using seccomp. Once seccomp is
 120           enabled via /proc/<pid>/seccomp, it cannot be disabled
 121           and the task is only allowed to execute a few safe syscalls
 122           defined by each seccomp mode.
 123
 124           If unsure, say Y. Only embedded should say N here.
 125
 126 endmenu
 127
 128 menu "Kernel features"
 129
 130 config NR_CPUS
 131         int
 132         default "1"
 133
 134 config ADVANCED_OPTIONS
 135         bool "Prompt for advanced kernel configuration options"
 136         help
 137           This option will enable prompting for a variety of advanced kernel
 138           configuration options.  These options can cause the kernel to not
 139           work if they are set incorrectly, but can be used to optimize certain
 140           aspects of kernel memory management.
 141
 142           Unless you know what you are doing, say N here.
 143
 144 comment "Default settings for advanced configuration options are used"
 145         depends on !ADVANCED_OPTIONS
 146
 147 config XILINX_UNCACHED_SHADOW
 148         bool "Are you using uncached shadow for RAM ?"
 149         depends on ADVANCED_OPTIONS && !MMU
 150         default n
 151         help
 152           This is needed to be able to allocate uncachable memory regions.
 153           The feature requires the design to define the RAM memory controller
 154           window to be twice as large as the actual physical memory.
 155
 156 config HIGHMEM
 157         bool "High memory support"
 158         depends on MMU
 159         help
 160           The address space of Microblaze processors is only 4 Gigabytes large
 161           and it has to accommodate user address space, kernel address
 162           space as well as some memory mapped IO. That means that, if you
 163           have a large amount of physical memory and/or IO, not all of the
 164           memory can be "permanently mapped" by the kernel. The physical
 165           memory that is not permanently mapped is called "high memory".
 166
 167           If unsure, say n.
 168
 169 config LOWMEM_SIZE_BOOL
 170         bool "Set maximum low memory"
 171         depends on ADVANCED_OPTIONS && MMU
 172         help
 173           This option allows you to set the maximum amount of memory which
 174           will be used as "low memory", that is, memory which the kernel can
 175           access directly, without having to set up a kernel virtual mapping.
 176           This can be useful in optimizing the layout of kernel virtual
 177           memory.
 178
 179           Say N here unless you know what you are doing.
 180
 181 config LOWMEM_SIZE
 182         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 183         default "0x30000000"
 184
 185 config MANUAL_RESET_VECTOR
 186         hex "Microblaze reset vector address setup"
 187         default "0x0"
 188         help
 189           Set this option to have the kernel override the CPU Reset vector.
 190           If zero, no change will be made to the MicroBlaze reset vector at
 191           address 0x0.
 192           If non-zero, a jump instruction to this address, will be written
 193           to the reset vector at address 0x0.
 194           If you are unsure, set it to default value 0x0.
 195
 196 config KERNEL_START_BOOL
 197         bool "Set custom kernel base address"
 198         depends on ADVANCED_OPTIONS
 199         help
 200           This option allows you to set the kernel virtual address at which
 201           the kernel will map low memory (the kernel image will be linked at
 202           this address).  This can be useful in optimizing the virtual memory
 203           layout of the system.
 204
 205           Say N here unless you know what you are doing.
 206
 207 config KERNEL_START
 208         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 209         default "0xc0000000" if MMU
 210         default KERNEL_BASE_ADDR if !MMU
 211
 212 config TASK_SIZE_BOOL
 213         bool "Set custom user task size"
 214         depends on ADVANCED_OPTIONS && MMU
 215         help
 216           This option allows you to set the amount of virtual address space
 217           allocated to user tasks.  This can be useful in optimizing the
 218           virtual memory layout of the system.
 219
 220           Say N here unless you know what you are doing.
 221
 222 config TASK_SIZE
 223         hex "Size of user task space" if TASK_SIZE_BOOL
 224         default "0x80000000"
 225
 226 choice
 227         prompt "Page size"
 228         default MICROBLAZE_4K_PAGES
 229         depends on ADVANCED_OPTIONS && !MMU
 230         help
 231           Select the kernel logical page size. Increasing the page size
 232           will reduce software overhead at each page boundary, allow
 233           hardware prefetch mechanisms to be more effective, and allow
 234           larger dma transfers increasing IO efficiency and reducing
 235           overhead. However the utilization of memory will increase.
 236           For example, each cached file will using a multiple of the
 237           page size to hold its contents and the difference between the
 238           end of file and the end of page is wasted.
 239
 240           If unsure, choose 4K_PAGES.
 241
 242 config MICROBLAZE_4K_PAGES
 243         bool "4k page size"
 244
 245 config MICROBLAZE_16K_PAGES
 246         bool "16k page size"
 247
 248 config MICROBLAZE_64K_PAGES
 249         bool "64k page size"
 250
 251 endchoice
 252
 253 source "mm/Kconfig"
 254
 255 endmenu
 256
 257 menu "Executable file formats"
 258
 259 source "fs/Kconfig.binfmt"
 260
 261 endmenu
 262
 263 menu "Bus Options"
 264
 265 config PCI
 266         bool "PCI support"
 267
 268 config PCI_DOMAINS
 269         def_bool PCI
 270
 271 config PCI_DOMAINS_GENERIC
 272         def_bool PCI_DOMAINS
 273
 274 config PCI_SYSCALL
 275         def_bool PCI
 276
 277 config PCI_XILINX
 278         bool "Xilinx PCI host bridge support"
 279         depends on PCI
 280
 281 source "drivers/pci/Kconfig"
 282
 283 endmenu
 284
 285 source "net/Kconfig"
 286
 287 source "drivers/Kconfig"
 288
 289 source "fs/Kconfig"
 290
 291 source "arch/microblaze/Kconfig.debug"
 292
 293 source "security/Kconfig"
 294
 295 source "crypto/Kconfig"
 296
 297 source "lib/Kconfig"