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 VIRT_TO_BUS
  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 GENERIC_IDLE_POLL_SETUP
  29         select MODULES_USE_ELF_RELA
  30         select CLONE_BACKWARDS3
  31         select CLKSRC_OF
  32
  33 config SWAP
  34         def_bool n
  35
  36 config RWSEM_GENERIC_SPINLOCK
  37         def_bool y
  38
  39 config ZONE_DMA
  40         def_bool y
  41
  42 config RWSEM_XCHGADD_ALGORITHM
  43         bool
  44
  45 config ARCH_HAS_ILOG2_U32
  46         def_bool n
  47
  48 config ARCH_HAS_ILOG2_U64
  49         def_bool n
  50
  51 config GENERIC_HWEIGHT
  52         def_bool y
  53
  54 config GENERIC_CALIBRATE_DELAY
  55         def_bool y
  56
  57 config GENERIC_CSUM
  58         def_bool y
  59
  60 config STACKTRACE_SUPPORT
  61         def_bool y
  62
  63 config LOCKDEP_SUPPORT
  64         def_bool y
  65
  66 config HAVE_LATENCYTOP_SUPPORT
  67         def_bool y
  68
  69 source "init/Kconfig"
  70
  71 source "kernel/Kconfig.freezer"
  72
  73 source "arch/microblaze/platform/Kconfig.platform"
  74
  75 menu "Processor type and features"
  76
  77 source "kernel/Kconfig.preempt"
  78
  79 source "kernel/Kconfig.hz"
  80
  81 config MMU
  82         bool "MMU support"
  83         default n
  84
  85 comment "Boot options"
  86
  87 config CMDLINE_BOOL
  88         bool "Default bootloader kernel arguments"
  89
  90 config CMDLINE
  91         string "Default kernel command string"
  92         depends on CMDLINE_BOOL
  93         default "console=ttyUL0,115200"
  94         help
  95           On some architectures there is currently no way for the boot loader
  96           to pass arguments to the kernel. For these architectures, you should
  97           supply some command-line options at build time by entering them
  98           here.
  99
 100 config CMDLINE_FORCE
 101         bool "Force default kernel command string"
 102         depends on CMDLINE_BOOL
 103         default n
 104         help
 105           Set this to have arguments from the default kernel command string
 106           override those passed by the boot loader.
 107
 108 config SECCOMP
 109         bool "Enable seccomp to safely compute untrusted bytecode"
 110         depends on PROC_FS
 111         default y
 112         help
 113           This kernel feature is useful for number crunching applications
 114           that may need to compute untrusted bytecode during their
 115           execution. By using pipes or other transports made available to
 116           the process as file descriptors supporting the read/write
 117           syscalls, it's possible to isolate those applications in
 118           their own address space using seccomp. Once seccomp is
 119           enabled via /proc/<pid>/seccomp, it cannot be disabled
 120           and the task is only allowed to execute a few safe syscalls
 121           defined by each seccomp mode.
 122
 123           If unsure, say Y. Only embedded should say N here.
 124
 125 endmenu
 126
 127 menu "Advanced setup"
 128
 129 config ADVANCED_OPTIONS
 130         bool "Prompt for advanced kernel configuration options"
 131         help
 132           This option will enable prompting for a variety of advanced kernel
 133           configuration options.  These options can cause the kernel to not
 134           work if they are set incorrectly, but can be used to optimize certain
 135           aspects of kernel memory management.
 136
 137           Unless you know what you are doing, say N here.
 138
 139 comment "Default settings for advanced configuration options are used"
 140         depends on !ADVANCED_OPTIONS
 141
 142 config XILINX_UNCACHED_SHADOW
 143         bool "Are you using uncached shadow for RAM ?"
 144         depends on ADVANCED_OPTIONS && !MMU
 145         default n
 146         help
 147           This is needed to be able to allocate uncachable memory regions.
 148           The feature requires the design to define the RAM memory controller
 149           window to be twice as large as the actual physical memory.
 150
 151 config HIGHMEM
 152         bool "High memory support"
 153         depends on MMU
 154         help
 155           The address space of Microblaze processors is only 4 Gigabytes large
 156           and it has to accommodate user address space, kernel address
 157           space as well as some memory mapped IO. That means that, if you
 158           have a large amount of physical memory and/or IO, not all of the
 159           memory can be "permanently mapped" by the kernel. The physical
 160           memory that is not permanently mapped is called "high memory".
 161
 162           If unsure, say n.
 163
 164 config LOWMEM_SIZE_BOOL
 165         bool "Set maximum low memory"
 166         depends on ADVANCED_OPTIONS && MMU
 167         help
 168           This option allows you to set the maximum amount of memory which
 169           will be used as "low memory", that is, memory which the kernel can
 170           access directly, without having to set up a kernel virtual mapping.
 171           This can be useful in optimizing the layout of kernel virtual
 172           memory.
 173
 174           Say N here unless you know what you are doing.
 175
 176 config LOWMEM_SIZE
 177         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 178         default "0x30000000"
 179
 180 config MANUAL_RESET_VECTOR
 181         hex "Microblaze reset vector address setup"
 182         default "0x0"
 183         help
 184           Set this option to have the kernel override the CPU Reset vector.
 185           If zero, no change will be made to the MicroBlaze reset vector at
 186           address 0x0.
 187           If non-zero, a jump instruction to this address, will be written
 188           to the reset vector at address 0x0.
 189           If you are unsure, set it to default value 0x0.
 190
 191 config KERNEL_START_BOOL
 192         bool "Set custom kernel base address"
 193         depends on ADVANCED_OPTIONS
 194         help
 195           This option allows you to set the kernel virtual address at which
 196           the kernel will map low memory (the kernel image will be linked at
 197           this address).  This can be useful in optimizing the virtual memory
 198           layout of the system.
 199
 200           Say N here unless you know what you are doing.
 201
 202 config KERNEL_START
 203         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 204         default "0xc0000000" if MMU
 205         default KERNEL_BASE_ADDR if !MMU
 206
 207 config TASK_SIZE_BOOL
 208         bool "Set custom user task size"
 209         depends on ADVANCED_OPTIONS && MMU
 210         help
 211           This option allows you to set the amount of virtual address space
 212           allocated to user tasks.  This can be useful in optimizing the
 213           virtual memory layout of the system.
 214
 215           Say N here unless you know what you are doing.
 216
 217 config TASK_SIZE
 218         hex "Size of user task space" if TASK_SIZE_BOOL
 219         default "0x80000000"
 220
 221 choice
 222         prompt "Page size"
 223         default MICROBLAZE_4K_PAGES
 224         depends on ADVANCED_OPTIONS && !MMU
 225         help
 226           Select the kernel logical page size. Increasing the page size
 227           will reduce software overhead at each page boundary, allow
 228           hardware prefetch mechanisms to be more effective, and allow
 229           larger dma transfers increasing IO efficiency and reducing
 230           overhead. However the utilization of memory will increase.
 231           For example, each cached file will using a multiple of the
 232           page size to hold its contents and the difference between the
 233           end of file and the end of page is wasted.
 234
 235           If unsure, choose 4K_PAGES.
 236
 237 config MICROBLAZE_4K_PAGES
 238         bool "4k page size"
 239
 240 config MICROBLAZE_16K_PAGES
 241         bool "16k page size"
 242
 243 config MICROBLAZE_64K_PAGES
 244         bool "64k page size"
 245
 246 endchoice
 247
 248 endmenu
 249
 250 source "mm/Kconfig"
 251
 252 menu "Executable file formats"
 253
 254 source "fs/Kconfig.binfmt"
 255
 256 endmenu
 257
 258 menu "Bus Options"
 259
 260 config PCI
 261         bool "PCI support"
 262
 263 config PCI_DOMAINS
 264         def_bool PCI
 265
 266 config PCI_SYSCALL
 267         def_bool PCI
 268
 269 config PCI_XILINX
 270         bool "Xilinx PCI host bridge support"
 271         depends on PCI
 272
 273 source "drivers/pci/Kconfig"
 274
 275 endmenu
 276
 277 source "net/Kconfig"
 278
 279 source "drivers/Kconfig"
 280
 281 source "fs/Kconfig"
 282
 283 source "arch/microblaze/Kconfig.debug"
 284
 285 source "security/Kconfig"
 286
 287 source "crypto/Kconfig"
 288
 289 source "lib/Kconfig"