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 XILINX_INTC
  31         select MODULES_USE_ELF_RELA
  32         select OF
  33         select OF_EARLY_FLATTREE
  34         select TRACING_SUPPORT
  35         select VIRT_TO_BUS
  36         select CPU_NO_EFFICIENT_FFS
  37
  38 config SWAP
  39         def_bool n
  40
  41 config RWSEM_GENERIC_SPINLOCK
  42         def_bool y
  43
  44 config ZONE_DMA
  45         def_bool y
  46
  47 config RWSEM_XCHGADD_ALGORITHM
  48         bool
  49
  50 config ARCH_HAS_ILOG2_U32
  51         def_bool n
  52
  53 config ARCH_HAS_ILOG2_U64
  54         def_bool n
  55
  56 config GENERIC_HWEIGHT
  57         def_bool y
  58
  59 config GENERIC_CALIBRATE_DELAY
  60         def_bool y
  61
  62 config GENERIC_CSUM
  63         def_bool y
  64
  65 config STACKTRACE_SUPPORT
  66         def_bool y
  67
  68 config LOCKDEP_SUPPORT
  69         def_bool y
  70
  71 source "init/Kconfig"
  72
  73 source "kernel/Kconfig.freezer"
  74
  75 source "arch/microblaze/Kconfig.platform"
  76
  77 menu "Processor type and features"
  78
  79 source "kernel/Kconfig.preempt"
  80
  81 source "kernel/Kconfig.hz"
  82
  83 config MMU
  84         bool "MMU support"
  85         default n
  86
  87 comment "Boot options"
  88
  89 config CMDLINE_BOOL
  90         bool "Default bootloader kernel arguments"
  91
  92 config CMDLINE
  93         string "Default kernel command string"
  94         depends on CMDLINE_BOOL
  95         default "console=ttyUL0,115200"
  96         help
  97           On some architectures there is currently no way for the boot loader
  98           to pass arguments to the kernel. For these architectures, you should
  99           supply some command-line options at build time by entering them
 100           here.
 101
 102 config CMDLINE_FORCE
 103         bool "Force default kernel command string"
 104         depends on CMDLINE_BOOL
 105         default n
 106         help
 107           Set this to have arguments from the default kernel command string
 108           override those passed by the boot loader.
 109
 110 config SECCOMP
 111         bool "Enable seccomp to safely compute untrusted bytecode"
 112         depends on PROC_FS
 113         default y
 114         help
 115           This kernel feature is useful for number crunching applications
 116           that may need to compute untrusted bytecode during their
 117           execution. By using pipes or other transports made available to
 118           the process as file descriptors supporting the read/write
 119           syscalls, it's possible to isolate those applications in
 120           their own address space using seccomp. Once seccomp is
 121           enabled via /proc/<pid>/seccomp, it cannot be disabled
 122           and the task is only allowed to execute a few safe syscalls
 123           defined by each seccomp mode.
 124
 125           If unsure, say Y. Only embedded should say N here.
 126
 127 endmenu
 128
 129 menu "Kernel features"
 130
 131 config NR_CPUS
 132         int
 133         default "1"
 134
 135 config ADVANCED_OPTIONS
 136         bool "Prompt for advanced kernel configuration options"
 137         help
 138           This option will enable prompting for a variety of advanced kernel
 139           configuration options.  These options can cause the kernel to not
 140           work if they are set incorrectly, but can be used to optimize certain
 141           aspects of kernel memory management.
 142
 143           Unless you know what you are doing, say N here.
 144
 145 comment "Default settings for advanced configuration options are used"
 146         depends on !ADVANCED_OPTIONS
 147
 148 config XILINX_UNCACHED_SHADOW
 149         bool "Are you using uncached shadow for RAM ?"
 150         depends on ADVANCED_OPTIONS && !MMU
 151         default n
 152         help
 153           This is needed to be able to allocate uncachable memory regions.
 154           The feature requires the design to define the RAM memory controller
 155           window to be twice as large as the actual physical memory.
 156
 157 config HIGHMEM
 158         bool "High memory support"
 159         depends on MMU
 160         help
 161           The address space of Microblaze processors is only 4 Gigabytes large
 162           and it has to accommodate user address space, kernel address
 163           space as well as some memory mapped IO. That means that, if you
 164           have a large amount of physical memory and/or IO, not all of the
 165           memory can be "permanently mapped" by the kernel. The physical
 166           memory that is not permanently mapped is called "high memory".
 167
 168           If unsure, say n.
 169
 170 config LOWMEM_SIZE_BOOL
 171         bool "Set maximum low memory"
 172         depends on ADVANCED_OPTIONS && MMU
 173         help
 174           This option allows you to set the maximum amount of memory which
 175           will be used as "low memory", that is, memory which the kernel can
 176           access directly, without having to set up a kernel virtual mapping.
 177           This can be useful in optimizing the layout of kernel virtual
 178           memory.
 179
 180           Say N here unless you know what you are doing.
 181
 182 config LOWMEM_SIZE
 183         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 184         default "0x30000000"
 185
 186 config MANUAL_RESET_VECTOR
 187         hex "Microblaze reset vector address setup"
 188         default "0x0"
 189         help
 190           Set this option to have the kernel override the CPU Reset vector.
 191           If zero, no change will be made to the MicroBlaze reset vector at
 192           address 0x0.
 193           If non-zero, a jump instruction to this address, will be written
 194           to the reset vector at address 0x0.
 195           If you are unsure, set it to default value 0x0.
 196
 197 config KERNEL_START_BOOL
 198         bool "Set custom kernel base address"
 199         depends on ADVANCED_OPTIONS
 200         help
 201           This option allows you to set the kernel virtual address at which
 202           the kernel will map low memory (the kernel image will be linked at
 203           this address).  This can be useful in optimizing the virtual memory
 204           layout of the system.
 205
 206           Say N here unless you know what you are doing.
 207
 208 config KERNEL_START
 209         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 210         default "0xc0000000" if MMU
 211         default KERNEL_BASE_ADDR if !MMU
 212
 213 config TASK_SIZE_BOOL
 214         bool "Set custom user task size"
 215         depends on ADVANCED_OPTIONS && MMU
 216         help
 217           This option allows you to set the amount of virtual address space
 218           allocated to user tasks.  This can be useful in optimizing the
 219           virtual memory layout of the system.
 220
 221           Say N here unless you know what you are doing.
 222
 223 config TASK_SIZE
 224         hex "Size of user task space" if TASK_SIZE_BOOL
 225         default "0x80000000"
 226
 227 choice
 228         prompt "Page size"
 229         default MICROBLAZE_4K_PAGES
 230         depends on ADVANCED_OPTIONS && !MMU
 231         help
 232           Select the kernel logical page size. Increasing the page size
 233           will reduce software overhead at each page boundary, allow
 234           hardware prefetch mechanisms to be more effective, and allow
 235           larger dma transfers increasing IO efficiency and reducing
 236           overhead. However the utilization of memory will increase.
 237           For example, each cached file will using a multiple of the
 238           page size to hold its contents and the difference between the
 239           end of file and the end of page is wasted.
 240
 241           If unsure, choose 4K_PAGES.
 242
 243 config MICROBLAZE_4K_PAGES
 244         bool "4k page size"
 245
 246 config MICROBLAZE_16K_PAGES
 247         bool "16k page size"
 248
 249 config MICROBLAZE_64K_PAGES
 250         bool "64k page size"
 251
 252 endchoice
 253
 254 source "mm/Kconfig"
 255
 256 endmenu
 257
 258 menu "Executable file formats"
 259
 260 source "fs/Kconfig.binfmt"
 261
 262 endmenu
 263
 264 menu "Bus Options"
 265
 266 config PCI
 267         bool "PCI support"
 268
 269 config PCI_DOMAINS
 270         def_bool PCI
 271
 272 config PCI_DOMAINS_GENERIC
 273         def_bool PCI_DOMAINS
 274
 275 config PCI_SYSCALL
 276         def_bool PCI
 277
 278 config PCI_XILINX
 279         bool "Xilinx PCI host bridge support"
 280         depends on PCI
 281
 282 source "drivers/pci/Kconfig"
 283
 284 endmenu
 285
 286 source "net/Kconfig"
 287
 288 source "drivers/Kconfig"
 289
 290 source "fs/Kconfig"
 291
 292 source "arch/microblaze/Kconfig.debug"
 293
 294 source "security/Kconfig"
 295
 296 source "crypto/Kconfig"
 297
 298 source "lib/Kconfig"