arch/c6x/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # For a description of the syntax of this configuration file,
   4 # see Documentation/kbuild/kconfig-language.rst.
   5 #
   6
   7 config C6X
   8         def_bool y
   9         select ARCH_32BIT_OFF_T
  10         select ARCH_HAS_SYNC_DMA_FOR_CPU
  11         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
  12         select CLKDEV_LOOKUP
  13         select GENERIC_ATOMIC64
  14         select GENERIC_IRQ_SHOW
  15         select HAVE_ARCH_TRACEHOOK
  16         select SPARSE_IRQ
  17         select IRQ_DOMAIN
  18         select OF
  19         select OF_EARLY_FLATTREE
  20         select GENERIC_CLOCKEVENTS
  21         select MODULES_USE_ELF_RELA
  22         select ARCH_NO_COHERENT_DMA_MMAP
  23         select MMU_GATHER_NO_RANGE if MMU
  24
  25 config MMU
  26         def_bool n
  27
  28 config FPU
  29         def_bool n
  30
  31 config GENERIC_CALIBRATE_DELAY
  32         def_bool y
  33
  34 config GENERIC_HWEIGHT
  35         def_bool y
  36
  37 config GENERIC_BUG
  38         def_bool y
  39         depends on BUG
  40
  41 config C6X_BIG_KERNEL
  42         bool "Build a big kernel"
  43         help
  44           The C6X function call instruction has a limited range of +/- 2MiB.
  45           This is sufficient for most kernels, but some kernel configurations
  46           with lots of compiled-in functionality may require a larger range
  47           for function calls. Use this option to have the compiler generate
  48           function calls with 32-bit range. This will make the kernel both
  49           larger and slower.
  50
  51           If unsure, say N.
  52
  53 # Use the generic interrupt handling code in kernel/irq/
  54
  55 config CMDLINE_BOOL
  56         bool "Default bootloader kernel arguments"
  57
  58 config CMDLINE
  59         string "Kernel command line"
  60         depends on CMDLINE_BOOL
  61         default "console=ttyS0,57600"
  62         help
  63           On some architectures there is currently no way for the boot loader
  64           to pass arguments to the kernel. For these architectures, you should
  65           supply some command-line options at build time by entering them
  66           here.
  67
  68 config CMDLINE_FORCE
  69         bool "Force default kernel command string"
  70         depends on CMDLINE_BOOL
  71         default n
  72         help
  73           Set this to have arguments from the default kernel command string
  74           override those passed by the boot loader.
  75
  76 config CPU_BIG_ENDIAN
  77         bool "Build big-endian kernel"
  78         default n
  79         help
  80           Say Y if you plan on running a kernel in big-endian mode.
  81           Note that your board must be properly built and your board
  82           port must properly enable any big-endian related features
  83           of your chipset/board/processor.
  84
  85 config FORCE_MAX_ZONEORDER
  86         int "Maximum zone order"
  87         default "13"
  88         help
  89           The kernel memory allocator divides physically contiguous memory
  90           blocks into "zones", where each zone is a power of two number of
  91           pages.  This option selects the largest power of two that the kernel
  92           keeps in the memory allocator.  If you need to allocate very large
  93           blocks of physically contiguous memory, then you may need to
  94           increase this value.
  95
  96           This config option is actually maximum order plus one. For example,
  97           a value of 11 means that the largest free memory block is 2^10 pages.
  98
  99 menu "Processor type and features"
 100
 101 source "arch/c6x/platforms/Kconfig"
 102
 103 config KERNEL_RAM_BASE_ADDRESS
 104         hex "Virtual address of memory base"
 105         default 0xe0000000 if SOC_TMS320C6455
 106         default 0xe0000000 if SOC_TMS320C6457
 107         default 0xe0000000 if SOC_TMS320C6472
 108         default 0x80000000
 109
 110 source "kernel/Kconfig.hz"
 111
 112 endmenu