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