arch/microblaze/Kconfig

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