LXR linux/arch/hexagon/Kconfig

   1# SPDX-License-Identifier: GPL-2.0
   2# Hexagon configuration
   3comment "Linux Kernel Configuration for Hexagon"
   4
   5config HEXAGON
   6        def_bool y
   7        select ARCH_32BIT_OFF_T
   8        select ARCH_HAS_SYNC_DMA_FOR_DEVICE
   9        select ARCH_NO_PREEMPT
  10        # Other pending projects/to-do items.
  11        # select HAVE_REGS_AND_STACK_ACCESS_API
  12        # select HAVE_HW_BREAKPOINT if PERF_EVENTS
  13        # select ARCH_HAS_CPU_IDLE_WAIT
  14        # select GPIOLIB
  15        # select HAVE_CLK
  16        # select GENERIC_PENDING_IRQ if SMP
  17        select GENERIC_ATOMIC64
  18        select HAVE_PERF_EVENTS
  19        # GENERIC_ALLOCATOR is used by dma_alloc_coherent()
  20        select GENERIC_ALLOCATOR
  21        select GENERIC_IRQ_SHOW
  22        select HAVE_ARCH_KGDB
  23        select HAVE_ARCH_TRACEHOOK
  24        select NEED_SG_DMA_LENGTH
  25        select NO_IOPORT_MAP
  26        select GENERIC_IOMAP
  27        select GENERIC_SMP_IDLE_THREAD
  28        select STACKTRACE_SUPPORT
  29        select GENERIC_CLOCKEVENTS_BROADCAST
  30        select MODULES_USE_ELF_RELA
  31        select GENERIC_CPU_DEVICES
  32        select SET_FS
  33        select ARCH_WANT_LD_ORPHAN_WARN
  34        help
  35          Qualcomm Hexagon is a processor architecture designed for high
  36          performance and low power across a wide variety of applications.
  37
  38config HEXAGON_PHYS_OFFSET
  39        def_bool y
  40        help
  41          Platforms that don't load the kernel at zero set this.
  42
  43config FRAME_POINTER
  44        def_bool y
  45
  46config LOCKDEP_SUPPORT
  47        def_bool y
  48
  49config EARLY_PRINTK
  50        def_bool y
  51
  52config MMU
  53        def_bool y
  54
  55config TRACE_IRQFLAGS_SUPPORT
  56        def_bool y
  57
  58config GENERIC_CSUM
  59        def_bool y
  60
  61#
  62# Use the generic interrupt handling code in kernel/irq/:
  63#
  64config GENERIC_IRQ_PROBE
  65        def_bool y
  66
  67config GENERIC_HWEIGHT
  68        def_bool y
  69
  70config STACKTRACE_SUPPORT
  71        def_bool y
  72        select STACKTRACE
  73
  74config GENERIC_BUG
  75        def_bool y
  76        depends on BUG
  77
  78menu "Machine selection"
  79
  80choice
  81        prompt "System type"
  82        default HEXAGON_COMET
  83
  84config HEXAGON_COMET
  85        bool "Comet Board"
  86        help
  87          Support for the Comet platform.
  88
  89endchoice
  90
  91config HEXAGON_ARCH_VERSION
  92        int "Architecture version"
  93        default 2
  94
  95config CMDLINE
  96        string "Default kernel command string"
  97        default ""
  98        help
  99          On some platforms, there is currently no way for the boot loader
 100          to pass arguments to the kernel. For these, you should supply some
 101          command-line options at build time by entering them here.  At a
 102          minimum, you should specify the memory size and the root device
 103          (e.g., mem=64M root=/dev/nfs).
 104
 105config SMP
 106        bool "Multi-Processing support"
 107        help
 108          Enables SMP support in the kernel.  If unsure, say "Y"
 109
 110config NR_CPUS
 111        int "Maximum number of CPUs" if SMP
 112        range 2 6 if SMP
 113        default "1" if !SMP
 114        default "6" if SMP
 115        help
 116          This allows you to specify the maximum number of CPUs which this
 117          kernel will support.  The maximum supported value is 6 and the
 118          minimum value which makes sense is 2.
 119
 120          This is purely to save memory - each supported CPU adds
 121          approximately eight kilobytes to the kernel image.
 122
 123choice
 124        prompt "Kernel page size"
 125        default PAGE_SIZE_4KB
 126        help
 127          Changes the default page size; use with caution.
 128
 129config PAGE_SIZE_4KB
 130        bool "4KB"
 131
 132config PAGE_SIZE_16KB
 133        bool "16KB"
 134
 135config PAGE_SIZE_64KB
 136        bool "64KB"
 137
 138config PAGE_SIZE_256KB
 139        bool "256KB"
 140
 141endchoice
 142
 143source "kernel/Kconfig.hz"
 144
 145endmenu
 146