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 HAVE_GENERIC_HARDIRQS
  19         select GENERIC_IRQ_PROBE
  20         select GENERIC_IRQ_SHOW
  21         select GENERIC_PCI_IOMAP
  22         select GENERIC_CPU_DEVICES
  23         select GENERIC_ATOMIC64
  24
  25 config SWAP
  26         def_bool n
  27
  28 config RWSEM_GENERIC_SPINLOCK
  29         def_bool y
  30
  31 config ZONE_DMA
  32         def_bool y
  33
  34 config ARCH_POPULATES_NODE_MAP
  35         def_bool y
  36
  37 config RWSEM_XCHGADD_ALGORITHM
  38         bool
  39
  40 config ARCH_HAS_ILOG2_U32
  41         def_bool n
  42
  43 config ARCH_HAS_ILOG2_U64
  44         def_bool n
  45
  46 config GENERIC_HWEIGHT
  47         def_bool y
  48
  49 config GENERIC_CALIBRATE_DELAY
  50         def_bool y
  51
  52 config GENERIC_TIME_VSYSCALL
  53         def_bool n
  54
  55 config GENERIC_CLOCKEVENTS
  56         def_bool y
  57
  58 config GENERIC_GPIO
  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/time/Kconfig"
  82
  83 source "kernel/Kconfig.preempt"
  84
  85 source "kernel/Kconfig.hz"
  86
  87 config MMU
  88         bool "MMU support"
  89         default n
  90
  91 config NO_MMU
  92         bool
  93         depends on !MMU
  94         default y
  95
  96 comment "Boot options"
  97
  98 config CMDLINE_BOOL
  99         bool "Default bootloader kernel arguments"
 100
 101 config CMDLINE
 102         string "Default kernel command string"
 103         depends on CMDLINE_BOOL
 104         default "console=ttyUL0,115200"
 105         help
 106           On some architectures there is currently no way for the boot loader
 107           to pass arguments to the kernel. For these architectures, you should
 108           supply some command-line options at build time by entering them
 109           here.
 110
 111 config CMDLINE_FORCE
 112         bool "Force default kernel command string"
 113         depends on CMDLINE_BOOL
 114         default n
 115         help
 116           Set this to have arguments from the default kernel command string
 117           override those passed by the boot loader.
 118
 119 config SECCOMP
 120         bool "Enable seccomp to safely compute untrusted bytecode"
 121         depends on PROC_FS
 122         default y
 123         help
 124           This kernel feature is useful for number crunching applications
 125           that may need to compute untrusted bytecode during their
 126           execution. By using pipes or other transports made available to
 127           the process as file descriptors supporting the read/write
 128           syscalls, it's possible to isolate those applications in
 129           their own address space using seccomp. Once seccomp is
 130           enabled via /proc/<pid>/seccomp, it cannot be disabled
 131           and the task is only allowed to execute a few safe syscalls
 132           defined by each seccomp mode.
 133
 134           If unsure, say Y. Only embedded should say N here.
 135
 136 endmenu
 137
 138 menu "Advanced setup"
 139
 140 config ADVANCED_OPTIONS
 141         bool "Prompt for advanced kernel configuration options"
 142         help
 143           This option will enable prompting for a variety of advanced kernel
 144           configuration options.  These options can cause the kernel to not
 145           work if they are set incorrectly, but can be used to optimize certain
 146           aspects of kernel memory management.
 147
 148           Unless you know what you are doing, say N here.
 149
 150 comment "Default settings for advanced configuration options are used"
 151         depends on !ADVANCED_OPTIONS
 152
 153 config XILINX_UNCACHED_SHADOW
 154         bool "Are you using uncached shadow for RAM ?"
 155         depends on ADVANCED_OPTIONS && !MMU
 156         default n
 157         help
 158           This is needed to be able to allocate uncachable memory regions.
 159           The feature requires the design to define the RAM memory controller
 160           window to be twice as large as the actual physical memory.
 161
 162 config HIGHMEM
 163         bool "High memory support"
 164         depends on MMU
 165         help
 166           The address space of Microblaze processors is only 4 Gigabytes large
 167           and it has to accommodate user address space, kernel address
 168           space as well as some memory mapped IO. That means that, if you
 169           have a large amount of physical memory and/or IO, not all of the
 170           memory can be "permanently mapped" by the kernel. The physical
 171           memory that is not permanently mapped is called "high memory".
 172
 173           If unsure, say n.
 174
 175 config LOWMEM_SIZE_BOOL
 176         bool "Set maximum low memory"
 177         depends on ADVANCED_OPTIONS && MMU
 178         help
 179           This option allows you to set the maximum amount of memory which
 180           will be used as "low memory", that is, memory which the kernel can
 181           access directly, without having to set up a kernel virtual mapping.
 182           This can be useful in optimizing the layout of kernel virtual
 183           memory.
 184
 185           Say N here unless you know what you are doing.
 186
 187 config LOWMEM_SIZE
 188         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 189         default "0x30000000"
 190
 191 config MANUAL_RESET_VECTOR
 192         hex "Microblaze reset vector address setup"
 193         default "0x0"
 194         help
 195           Set this option to have the kernel override the CPU Reset vector.
 196           If zero, no change will be made to the MicroBlaze reset vector at
 197           address 0x0.
 198           If non-zero, a jump instruction to this address, will be written
 199           to the reset vector at address 0x0.
 200           If you are unsure, set it to default value 0x0.
 201
 202 config KERNEL_START_BOOL
 203         bool "Set custom kernel base address"
 204         depends on ADVANCED_OPTIONS
 205         help
 206           This option allows you to set the kernel virtual address at which
 207           the kernel will map low memory (the kernel image will be linked at
 208           this address).  This can be useful in optimizing the virtual memory
 209           layout of the system.
 210
 211           Say N here unless you know what you are doing.
 212
 213 config KERNEL_START
 214         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 215         default "0xc0000000" if MMU
 216         default KERNEL_BASE_ADDR if !MMU
 217
 218 config TASK_SIZE_BOOL
 219         bool "Set custom user task size"
 220         depends on ADVANCED_OPTIONS && MMU
 221         help
 222           This option allows you to set the amount of virtual address space
 223           allocated to user tasks.  This can be useful in optimizing the
 224           virtual memory layout of the system.
 225
 226           Say N here unless you know what you are doing.
 227
 228 config TASK_SIZE
 229         hex "Size of user task space" if TASK_SIZE_BOOL
 230         default "0x80000000"
 231
 232 choice
 233         prompt "Page size"
 234         default MICROBLAZE_4K_PAGES
 235         depends on ADVANCED_OPTIONS && !MMU
 236         help
 237           Select the kernel logical page size. Increasing the page size
 238           will reduce software overhead at each page boundary, allow
 239           hardware prefetch mechanisms to be more effective, and allow
 240           larger dma transfers increasing IO efficiency and reducing
 241           overhead. However the utilization of memory will increase.
 242           For example, each cached file will using a multiple of the
 243           page size to hold its contents and the difference between the
 244           end of file and the end of page is wasted.
 245
 246           If unsure, choose 4K_PAGES.
 247
 248 config MICROBLAZE_4K_PAGES
 249         bool "4k page size"
 250
 251 config MICROBLAZE_8K_PAGES
 252         bool "8k page size"
 253
 254 config MICROBLAZE_16K_PAGES
 255         bool "16k page size"
 256
 257 config MICROBLAZE_32K_PAGES
 258         bool "32k page size"
 259
 260 endchoice
 261
 262 config KERNEL_PAD
 263         hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS
 264         default "0x80000" if MMU
 265
 266 endmenu
 267
 268 source "mm/Kconfig"
 269
 270 menu "Executable file formats"
 271
 272 source "fs/Kconfig.binfmt"
 273
 274 endmenu
 275
 276 menu "Bus Options"
 277
 278 config PCI
 279         bool "PCI support"
 280
 281 config PCI_DOMAINS
 282         def_bool PCI
 283
 284 config PCI_SYSCALL
 285         def_bool PCI
 286
 287 config PCI_XILINX
 288         bool "Xilinx PCI host bridge support"
 289         depends on PCI
 290
 291 source "drivers/pci/Kconfig"
 292
 293 endmenu
 294
 295 source "net/Kconfig"
 296
 297 source "drivers/Kconfig"
 298
 299 source "fs/Kconfig"
 300
 301 source "arch/microblaze/Kconfig.debug"
 302
 303 source "security/Kconfig"
 304
 305 source "crypto/Kconfig"
 306
 307 source "lib/Kconfig"