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 GENERIC_IDLE_POLL_SETUP
  30         select MODULES_USE_ELF_RELA
  31         select CLONE_BACKWARDS3
  32         select CLKSRC_OF
  33
  34 config SWAP
  35         def_bool n
  36
  37 config RWSEM_GENERIC_SPINLOCK
  38         def_bool y
  39
  40 config ZONE_DMA
  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_CSUM
  59         def_bool y
  60
  61 config STACKTRACE_SUPPORT
  62         def_bool y
  63
  64 config LOCKDEP_SUPPORT
  65         def_bool y
  66
  67 config HAVE_LATENCYTOP_SUPPORT
  68         def_bool y
  69
  70 source "init/Kconfig"
  71
  72 source "kernel/Kconfig.freezer"
  73
  74 source "arch/microblaze/platform/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 "Advanced setup"
 129
 130 config ADVANCED_OPTIONS
 131         bool "Prompt for advanced kernel configuration options"
 132         help
 133           This option will enable prompting for a variety of advanced kernel
 134           configuration options.  These options can cause the kernel to not
 135           work if they are set incorrectly, but can be used to optimize certain
 136           aspects of kernel memory management.
 137
 138           Unless you know what you are doing, say N here.
 139
 140 comment "Default settings for advanced configuration options are used"
 141         depends on !ADVANCED_OPTIONS
 142
 143 config XILINX_UNCACHED_SHADOW
 144         bool "Are you using uncached shadow for RAM ?"
 145         depends on ADVANCED_OPTIONS && !MMU
 146         default n
 147         help
 148           This is needed to be able to allocate uncachable memory regions.
 149           The feature requires the design to define the RAM memory controller
 150           window to be twice as large as the actual physical memory.
 151
 152 config HIGHMEM
 153         bool "High memory support"
 154         depends on MMU
 155         help
 156           The address space of Microblaze processors is only 4 Gigabytes large
 157           and it has to accommodate user address space, kernel address
 158           space as well as some memory mapped IO. That means that, if you
 159           have a large amount of physical memory and/or IO, not all of the
 160           memory can be "permanently mapped" by the kernel. The physical
 161           memory that is not permanently mapped is called "high memory".
 162
 163           If unsure, say n.
 164
 165 config LOWMEM_SIZE_BOOL
 166         bool "Set maximum low memory"
 167         depends on ADVANCED_OPTIONS && MMU
 168         help
 169           This option allows you to set the maximum amount of memory which
 170           will be used as "low memory", that is, memory which the kernel can
 171           access directly, without having to set up a kernel virtual mapping.
 172           This can be useful in optimizing the layout of kernel virtual
 173           memory.
 174
 175           Say N here unless you know what you are doing.
 176
 177 config LOWMEM_SIZE
 178         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 179         default "0x30000000"
 180
 181 config MANUAL_RESET_VECTOR
 182         hex "Microblaze reset vector address setup"
 183         default "0x0"
 184         help
 185           Set this option to have the kernel override the CPU Reset vector.
 186           If zero, no change will be made to the MicroBlaze reset vector at
 187           address 0x0.
 188           If non-zero, a jump instruction to this address, will be written
 189           to the reset vector at address 0x0.
 190           If you are unsure, set it to default value 0x0.
 191
 192 config KERNEL_START_BOOL
 193         bool "Set custom kernel base address"
 194         depends on ADVANCED_OPTIONS
 195         help
 196           This option allows you to set the kernel virtual address at which
 197           the kernel will map low memory (the kernel image will be linked at
 198           this address).  This can be useful in optimizing the virtual memory
 199           layout of the system.
 200
 201           Say N here unless you know what you are doing.
 202
 203 config KERNEL_START
 204         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 205         default "0xc0000000" if MMU
 206         default KERNEL_BASE_ADDR if !MMU
 207
 208 config TASK_SIZE_BOOL
 209         bool "Set custom user task size"
 210         depends on ADVANCED_OPTIONS && MMU
 211         help
 212           This option allows you to set the amount of virtual address space
 213           allocated to user tasks.  This can be useful in optimizing the
 214           virtual memory layout of the system.
 215
 216           Say N here unless you know what you are doing.
 217
 218 config TASK_SIZE
 219         hex "Size of user task space" if TASK_SIZE_BOOL
 220         default "0x80000000"
 221
 222 choice
 223         prompt "Page size"
 224         default MICROBLAZE_4K_PAGES
 225         depends on ADVANCED_OPTIONS && !MMU
 226         help
 227           Select the kernel logical page size. Increasing the page size
 228           will reduce software overhead at each page boundary, allow
 229           hardware prefetch mechanisms to be more effective, and allow
 230           larger dma transfers increasing IO efficiency and reducing
 231           overhead. However the utilization of memory will increase.
 232           For example, each cached file will using a multiple of the
 233           page size to hold its contents and the difference between the
 234           end of file and the end of page is wasted.
 235
 236           If unsure, choose 4K_PAGES.
 237
 238 config MICROBLAZE_4K_PAGES
 239         bool "4k page size"
 240
 241 config MICROBLAZE_16K_PAGES
 242         bool "16k page size"
 243
 244 config MICROBLAZE_64K_PAGES
 245         bool "64k page size"
 246
 247 endchoice
 248
 249 endmenu
 250
 251 source "mm/Kconfig"
 252
 253 menu "Executable file formats"
 254
 255 source "fs/Kconfig.binfmt"
 256
 257 endmenu
 258
 259 menu "Bus Options"
 260
 261 config PCI
 262         bool "PCI support"
 263
 264 config PCI_DOMAINS
 265         def_bool PCI
 266
 267 config PCI_SYSCALL
 268         def_bool PCI
 269
 270 config PCI_XILINX
 271         bool "Xilinx PCI host bridge support"
 272         depends on PCI
 273
 274 source "drivers/pci/Kconfig"
 275
 276 endmenu
 277
 278 source "net/Kconfig"
 279
 280 source "drivers/Kconfig"
 281
 282 source "fs/Kconfig"
 283
 284 source "arch/microblaze/Kconfig.debug"
 285
 286 source "security/Kconfig"
 287
 288 source "crypto/Kconfig"
 289
 290 source "lib/Kconfig"