arch/hexagon/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 # Hexagon configuration
   3 comment "Linux Kernel Configuration for Hexagon"
   4
   5 config HEXAGON
   6         def_bool y
   7         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
   8         select ARCH_NO_PREEMPT
   9         select HAVE_OPROFILE
  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 ARCH_DISCARD_MEMBLOCK
  25         select NEED_SG_DMA_LENGTH
  26         select NO_IOPORT_MAP
  27         select GENERIC_IOMAP
  28         select GENERIC_SMP_IDLE_THREAD
  29         select STACKTRACE_SUPPORT
  30         select GENERIC_CLOCKEVENTS
  31         select GENERIC_CLOCKEVENTS_BROADCAST
  32         select MODULES_USE_ELF_RELA
  33         select GENERIC_CPU_DEVICES
  34         select DMA_DIRECT_OPS
  35         ---help---
  36           Qualcomm Hexagon is a processor architecture designed for high
  37           performance and low power across a wide variety of applications.
  38
  39 config HEXAGON_PHYS_OFFSET
  40         def_bool y
  41         ---help---
  42           Platforms that don't load the kernel at zero set this.
  43
  44 config FRAME_POINTER
  45         def_bool y
  46
  47 config LOCKDEP_SUPPORT
  48         def_bool y
  49
  50 config PCI
  51         def_bool n
  52
  53 config EARLY_PRINTK
  54         def_bool y
  55
  56 config MMU
  57         def_bool y
  58
  59 config TRACE_IRQFLAGS_SUPPORT
  60         def_bool y
  61
  62 config GENERIC_CSUM
  63         def_bool y
  64
  65 #
  66 # Use the generic interrupt handling code in kernel/irq/:
  67 #
  68 config GENERIC_IRQ_PROBE
  69         def_bool y
  70
  71 config RWSEM_GENERIC_SPINLOCK
  72         def_bool n
  73
  74 config RWSEM_XCHGADD_ALGORITHM
  75         def_bool y
  76
  77 config GENERIC_HWEIGHT
  78         def_bool y
  79
  80 config STACKTRACE_SUPPORT
  81         def_bool y
  82         select STACKTRACE
  83
  84 config GENERIC_BUG
  85         def_bool y
  86         depends on BUG
  87
  88 menu "Machine selection"
  89
  90 choice
  91         prompt "System type"
  92         default HEXAGON_COMET
  93
  94 config HEXAGON_COMET
  95         bool "Comet Board"
  96         ---help---
  97           Support for the Comet platform.
  98
  99 endchoice
 100
 101 config HEXAGON_ARCH_VERSION
 102         int "Architecture version"
 103         default 2
 104
 105 config CMDLINE
 106         string "Default kernel command string"
 107         default ""
 108         help
 109           On some platforms, there is currently no way for the boot loader
 110           to pass arguments to the kernel. For these, you should supply some
 111           command-line options at build time by entering them here.  At a
 112           minimum, you should specify the memory size and the root device
 113           (e.g., mem=64M root=/dev/nfs).
 114
 115 config SMP
 116         bool "Multi-Processing support"
 117         ---help---
 118           Enables SMP support in the kernel.  If unsure, say "Y"
 119
 120 config NR_CPUS
 121         int "Maximum number of CPUs" if SMP
 122         range 2 6 if SMP
 123         default "1" if !SMP
 124         default "6" if SMP
 125         ---help---
 126           This allows you to specify the maximum number of CPUs which this
 127           kernel will support.  The maximum supported value is 6 and the
 128           minimum value which makes sense is 2.
 129
 130           This is purely to save memory - each supported CPU adds
 131           approximately eight kilobytes to the kernel image.
 132
 133 choice
 134         prompt "Kernel page size"
 135         default PAGE_SIZE_4KB
 136         ---help---
 137           Changes the default page size; use with caution.
 138
 139 config PAGE_SIZE_4KB
 140         bool "4KB"
 141
 142 config PAGE_SIZE_16KB
 143         bool "16KB"
 144
 145 config PAGE_SIZE_64KB
 146         bool "64KB"
 147
 148 config PAGE_SIZE_256KB
 149         bool "256KB"
 150
 151 endchoice
 152
 153 source "kernel/Kconfig.hz"
 154
 155 endmenu