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	select ARCH_WANT_FRAME_POINTERS
 11	select DMA_GLOBAL_POOL
 12	select HAVE_PAGE_SIZE_4KB
 13	select HAVE_PAGE_SIZE_16KB
 14	select HAVE_PAGE_SIZE_64KB
 15	select HAVE_PAGE_SIZE_256KB
 16	select FRAME_POINTER
 17	# Other pending projects/to-do items.
 18	# select HAVE_REGS_AND_STACK_ACCESS_API
 19	# select HAVE_HW_BREAKPOINT if PERF_EVENTS
 20	# select ARCH_HAS_CPU_IDLE_WAIT
 21	# select GPIOLIB
 22	# select HAVE_CLK
 23	select GENERIC_ATOMIC64
 24	select HAVE_PERF_EVENTS
 25	# GENERIC_ALLOCATOR is used by dma_alloc_coherent()
 26	select GENERIC_ALLOCATOR
 27	select GENERIC_IRQ_PROBE
 28	select GENERIC_IRQ_SHOW
 29	select HAVE_ARCH_KGDB
 30	select HAVE_ARCH_TRACEHOOK
 31	select NEED_SG_DMA_LENGTH
 32	select GENERIC_IOREMAP
 33	select GENERIC_SMP_IDLE_THREAD
 34	select STACKTRACE_SUPPORT
 35	select GENERIC_CLOCKEVENTS_BROADCAST
 36	select LOCK_MM_AND_FIND_VMA
 37	select MODULES_USE_ELF_RELA
 38	select GENERIC_CPU_DEVICES
 39	select ARCH_WANT_LD_ORPHAN_WARN
 40	select TRACE_IRQFLAGS_SUPPORT
 41	help
 42	  Qualcomm Hexagon is a processor architecture designed for high
 43	  performance and low power across a wide variety of applications.
 44
 45config HEXAGON_PHYS_OFFSET
 46	def_bool y
 47	help
 48	  Platforms that don't load the kernel at zero set this.
 49
 50config LOCKDEP_SUPPORT
 51	def_bool y
 52
 53config EARLY_PRINTK
 54	def_bool y
 55
 56config MMU
 57	def_bool y
 58
 59config NO_IOPORT_MAP
 60	def_bool y
 61
 62config GENERIC_CSUM
 63	def_bool y
 64
 65config GENERIC_HWEIGHT
 66	def_bool y
 67
 68config STACKTRACE_SUPPORT
 69	def_bool y
 70	select STACKTRACE
 71
 72config GENERIC_BUG
 73	def_bool y
 74	depends on BUG
 75
 76menu "Machine selection"
 77
 78choice
 79	prompt "System type"
 80	default HEXAGON_COMET
 81
 82config HEXAGON_COMET
 83	bool "Comet Board"
 84	help
 85	  Support for the Comet platform.
 86
 87endchoice
 88
 89config HEXAGON_ARCH_VERSION
 90	int "Architecture version"
 91	default 2
 92
 93config CMDLINE
 94	string "Default kernel command string"
 95	default ""
 96	help
 97	  On some platforms, there is currently no way for the boot loader
 98	  to pass arguments to the kernel. For these, you should supply some
 99	  command-line options at build time by entering them here.  At a
100	  minimum, you should specify the memory size and the root device
101	  (e.g., mem=64M root=/dev/nfs).
102
103config SMP
104	bool "Multi-Processing support"
105	help
106	  Enables SMP support in the kernel.  If unsure, say "Y"
107
108config NR_CPUS
109	int "Maximum number of CPUs" if SMP
110	range 2 6 if SMP
111	default "1" if !SMP
112	default "6" if SMP
113	help
114	  This allows you to specify the maximum number of CPUs which this
115	  kernel will support.  The maximum supported value is 6 and the
116	  minimum value which makes sense is 2.
117
118	  This is purely to save memory - each supported CPU adds
119	  approximately eight kilobytes to the kernel image.
120
121source "kernel/Kconfig.hz"
122
123endmenu