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_NO_COHERENT_DMA_MMAP if !MMU
   6         select ARCH_WANT_IPC_PARSE_VERSION
   7         select BUILDTIME_EXTABLE_SORT
   8         select TIMER_OF
   9         select CLONE_BACKWARDS3
  10         select COMMON_CLK
  11         select GENERIC_ATOMIC64
  12         select GENERIC_CLOCKEVENTS
  13         select GENERIC_CPU_DEVICES
  14         select GENERIC_IDLE_POLL_SETUP
  15         select GENERIC_IRQ_PROBE
  16         select GENERIC_IRQ_SHOW
  17         select GENERIC_PCI_IOMAP
  18         select GENERIC_SCHED_CLOCK
  19         select HAVE_ARCH_HASH
  20         select HAVE_ARCH_KGDB
  21         select HAVE_DEBUG_KMEMLEAK
  22         select HAVE_DMA_API_DEBUG
  23         select HAVE_DYNAMIC_FTRACE
  24         select HAVE_FTRACE_MCOUNT_RECORD
  25         select HAVE_FUNCTION_GRAPH_TRACER
  26         select HAVE_FUNCTION_TRACER
  27         select HAVE_MEMBLOCK
  28         select HAVE_MEMBLOCK_NODE_MAP
  29         select HAVE_OPROFILE
  30         select IRQ_DOMAIN
  31         select XILINX_INTC
  32         select MODULES_USE_ELF_RELA
  33         select OF
  34         select OF_EARLY_FLATTREE
  35         select TRACING_SUPPORT
  36         select VIRT_TO_BUS
  37         select CPU_NO_EFFICIENT_FFS
  38
  39 config SWAP
  40         def_bool n
  41
  42 config RWSEM_GENERIC_SPINLOCK
  43         def_bool y
  44
  45 config ZONE_DMA
  46         def_bool y
  47
  48 config RWSEM_XCHGADD_ALGORITHM
  49         bool
  50
  51 config ARCH_HAS_ILOG2_U32
  52         def_bool n
  53
  54 config ARCH_HAS_ILOG2_U64
  55         def_bool n
  56
  57 config GENERIC_HWEIGHT
  58         def_bool y
  59
  60 config GENERIC_CALIBRATE_DELAY
  61         def_bool y
  62
  63 config GENERIC_CSUM
  64         def_bool y
  65
  66 config STACKTRACE_SUPPORT
  67         def_bool y
  68
  69 config LOCKDEP_SUPPORT
  70         def_bool y
  71
  72 source "init/Kconfig"
  73
  74 source "kernel/Kconfig.freezer"
  75
  76 source "arch/microblaze/Kconfig.platform"
  77
  78 menu "Processor type and features"
  79
  80 source "kernel/Kconfig.preempt"
  81
  82 source "kernel/Kconfig.hz"
  83
  84 config MMU
  85         bool "MMU support"
  86         default n
  87
  88 comment "Boot options"
  89
  90 config CMDLINE_BOOL
  91         bool "Default bootloader kernel arguments"
  92
  93 config CMDLINE
  94         string "Default kernel command string"
  95         depends on CMDLINE_BOOL
  96         default "console=ttyUL0,115200"
  97         help
  98           On some architectures there is currently no way for the boot loader
  99           to pass arguments to the kernel. For these architectures, you should
 100           supply some command-line options at build time by entering them
 101           here.
 102
 103 config CMDLINE_FORCE
 104         bool "Force default kernel command string"
 105         depends on CMDLINE_BOOL
 106         default n
 107         help
 108           Set this to have arguments from the default kernel command string
 109           override those passed by the boot loader.
 110
 111 config SECCOMP
 112         bool "Enable seccomp to safely compute untrusted bytecode"
 113         depends on PROC_FS
 114         default y
 115         help
 116           This kernel feature is useful for number crunching applications
 117           that may need to compute untrusted bytecode during their
 118           execution. By using pipes or other transports made available to
 119           the process as file descriptors supporting the read/write
 120           syscalls, it's possible to isolate those applications in
 121           their own address space using seccomp. Once seccomp is
 122           enabled via /proc/<pid>/seccomp, it cannot be disabled
 123           and the task is only allowed to execute a few safe syscalls
 124           defined by each seccomp mode.
 125
 126           If unsure, say Y. Only embedded should say N here.
 127
 128 endmenu
 129
 130 menu "Kernel features"
 131
 132 config NR_CPUS
 133         int
 134         default "1"
 135
 136 config ADVANCED_OPTIONS
 137         bool "Prompt for advanced kernel configuration options"
 138         help
 139           This option will enable prompting for a variety of advanced kernel
 140           configuration options.  These options can cause the kernel to not
 141           work if they are set incorrectly, but can be used to optimize certain
 142           aspects of kernel memory management.
 143
 144           Unless you know what you are doing, say N here.
 145
 146 comment "Default settings for advanced configuration options are used"
 147         depends on !ADVANCED_OPTIONS
 148
 149 config XILINX_UNCACHED_SHADOW
 150         bool "Are you using uncached shadow for RAM ?"
 151         depends on ADVANCED_OPTIONS && !MMU
 152         default n
 153         help
 154           This is needed to be able to allocate uncachable memory regions.
 155           The feature requires the design to define the RAM memory controller
 156           window to be twice as large as the actual physical memory.
 157
 158 config HIGHMEM
 159         bool "High memory support"
 160         depends on MMU
 161         help
 162           The address space of Microblaze processors is only 4 Gigabytes large
 163           and it has to accommodate user address space, kernel address
 164           space as well as some memory mapped IO. That means that, if you
 165           have a large amount of physical memory and/or IO, not all of the
 166           memory can be "permanently mapped" by the kernel. The physical
 167           memory that is not permanently mapped is called "high memory".
 168
 169           If unsure, say n.
 170
 171 config LOWMEM_SIZE_BOOL
 172         bool "Set maximum low memory"
 173         depends on ADVANCED_OPTIONS && MMU
 174         help
 175           This option allows you to set the maximum amount of memory which
 176           will be used as "low memory", that is, memory which the kernel can
 177           access directly, without having to set up a kernel virtual mapping.
 178           This can be useful in optimizing the layout of kernel virtual
 179           memory.
 180
 181           Say N here unless you know what you are doing.
 182
 183 config LOWMEM_SIZE
 184         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 185         default "0x30000000"
 186
 187 config MANUAL_RESET_VECTOR
 188         hex "Microblaze reset vector address setup"
 189         default "0x0"
 190         help
 191           Set this option to have the kernel override the CPU Reset vector.
 192           If zero, no change will be made to the MicroBlaze reset vector at
 193           address 0x0.
 194           If non-zero, a jump instruction to this address, will be written
 195           to the reset vector at address 0x0.
 196           If you are unsure, set it to default value 0x0.
 197
 198 config KERNEL_START_BOOL
 199         bool "Set custom kernel base address"
 200         depends on ADVANCED_OPTIONS
 201         help
 202           This option allows you to set the kernel virtual address at which
 203           the kernel will map low memory (the kernel image will be linked at
 204           this address).  This can be useful in optimizing the virtual memory
 205           layout of the system.
 206
 207           Say N here unless you know what you are doing.
 208
 209 config KERNEL_START
 210         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 211         default "0xc0000000" if MMU
 212         default KERNEL_BASE_ADDR if !MMU
 213
 214 config TASK_SIZE_BOOL
 215         bool "Set custom user task size"
 216         depends on ADVANCED_OPTIONS && MMU
 217         help
 218           This option allows you to set the amount of virtual address space
 219           allocated to user tasks.  This can be useful in optimizing the
 220           virtual memory layout of the system.
 221
 222           Say N here unless you know what you are doing.
 223
 224 config TASK_SIZE
 225         hex "Size of user task space" if TASK_SIZE_BOOL
 226         default "0x80000000"
 227
 228 choice
 229         prompt "Page size"
 230         default MICROBLAZE_4K_PAGES
 231         depends on ADVANCED_OPTIONS && !MMU
 232         help
 233           Select the kernel logical page size. Increasing the page size
 234           will reduce software overhead at each page boundary, allow
 235           hardware prefetch mechanisms to be more effective, and allow
 236           larger dma transfers increasing IO efficiency and reducing
 237           overhead. However the utilization of memory will increase.
 238           For example, each cached file will using a multiple of the
 239           page size to hold its contents and the difference between the
 240           end of file and the end of page is wasted.
 241
 242           If unsure, choose 4K_PAGES.
 243
 244 config MICROBLAZE_4K_PAGES
 245         bool "4k page size"
 246
 247 config MICROBLAZE_16K_PAGES
 248         bool "16k page size"
 249
 250 config MICROBLAZE_64K_PAGES
 251         bool "64k page size"
 252
 253 endchoice
 254
 255 source "mm/Kconfig"
 256
 257 endmenu
 258
 259 menu "Executable file formats"
 260
 261 source "fs/Kconfig.binfmt"
 262
 263 endmenu
 264
 265 menu "Bus Options"
 266
 267 config PCI
 268         bool "PCI support"
 269
 270 config PCI_DOMAINS
 271         def_bool PCI
 272
 273 config PCI_DOMAINS_GENERIC
 274         def_bool PCI_DOMAINS
 275
 276 config PCI_SYSCALL
 277         def_bool PCI
 278
 279 config PCI_XILINX
 280         bool "Xilinx PCI host bridge support"
 281         depends on PCI
 282
 283 source "drivers/pci/Kconfig"
 284
 285 endmenu
 286
 287 source "net/Kconfig"
 288
 289 source "drivers/Kconfig"
 290
 291 source "fs/Kconfig"
 292
 293 source "arch/microblaze/Kconfig.debug"
 294
 295 source "security/Kconfig"
 296
 297 source "crypto/Kconfig"
 298
 299 source "lib/Kconfig"