1config ARM64 2 def_bool y 3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4 select GENERIC_CLOCKEVENTS 5 select GENERIC_HARDIRQS_NO_DEPRECATED 6 select GENERIC_IOMAP 7 select GENERIC_IRQ_PROBE 8 select GENERIC_IRQ_SHOW 9 select GENERIC_SMP_IDLE_THREAD 10 select GENERIC_TIME_VSYSCALL 11 select HARDIRQS_SW_RESEND 12 select HAVE_ARCH_TRACEHOOK 13 select HAVE_DEBUG_BUGVERBOSE 14 select HAVE_DEBUG_KMEMLEAK 15 select HAVE_DMA_API_DEBUG 16 select HAVE_DMA_ATTRS 17 select HAVE_GENERIC_DMA_COHERENT 18 select HAVE_GENERIC_HARDIRQS 19 select HAVE_HW_BREAKPOINT if PERF_EVENTS 20 select HAVE_IRQ_WORK 21 select HAVE_MEMBLOCK 22 select HAVE_PERF_EVENTS 23 select HAVE_SPARSE_IRQ 24 select IRQ_DOMAIN 25 select MODULES_USE_ELF_RELA 26 select NO_BOOTMEM 27 select OF 28 select OF_EARLY_FLATTREE 29 select PERF_USE_VMALLOC 30 select RTC_LIB 31 select SPARSE_IRQ 32 select SYSCTL_EXCEPTION_TRACE 33 help 34 ARM 64-bit (AArch64) Linux support. 35 36config 64BIT 37 def_bool y 38 39config ARCH_PHYS_ADDR_T_64BIT 40 def_bool y 41 42config MMU 43 def_bool y 44 45config NO_IOPORT 46 def_bool y 47 48config STACKTRACE_SUPPORT 49 def_bool y 50 51config LOCKDEP_SUPPORT 52 def_bool y 53 54config TRACE_IRQFLAGS_SUPPORT 55 def_bool y 56 57config GENERIC_LOCKBREAK 58 def_bool y 59 depends on SMP && PREEMPT 60 61config RWSEM_GENERIC_SPINLOCK 62 def_bool y 63 64config GENERIC_HWEIGHT 65 def_bool y 66 67config GENERIC_CSUM 68 def_bool y 69 70config GENERIC_CALIBRATE_DELAY 71 def_bool y 72 73config ZONE_DMA32 74 def_bool y 75 76config ARCH_DMA_ADDR_T_64BIT 77 def_bool y 78 79config NEED_DMA_MAP_STATE 80 def_bool y 81 82config NEED_SG_DMA_LENGTH 83 def_bool y 84 85config SWIOTLB 86 def_bool y 87 88config IOMMU_HELPER 89 def_bool SWIOTLB 90 91source "init/Kconfig" 92 93source "kernel/Kconfig.freezer" 94 95menu "System Type" 96 97endmenu 98 99menu "Bus support" 100 101config ARM_AMBA 102 bool 103 104endmenu 105 106menu "Kernel Features" 107 108source "kernel/time/Kconfig" 109 110config ARM64_64K_PAGES 111 bool "Enable 64KB pages support" 112 help 113 This feature enables 64KB pages support (4KB by default) 114 allowing only two levels of page tables and faster TLB 115 look-up. AArch32 emulation is not available when this feature 116 is enabled. 117 118config SMP 119 bool "Symmetric Multi-Processing" 120 select USE_GENERIC_SMP_HELPERS 121 help 122 This enables support for systems with more than one CPU. If 123 you say N here, the kernel will run on single and 124 multiprocessor machines, but will use only one CPU of a 125 multiprocessor machine. If you say Y here, the kernel will run 126 on many, but not all, single processor machines. On a single 127 processor machine, the kernel will run faster if you say N 128 here. 129 130 If you don't know what to do here, say N. 131 132config NR_CPUS 133 int "Maximum number of CPUs (2-32)" 134 range 2 32 135 depends on SMP 136 default "4" 137 138source kernel/Kconfig.preempt 139 140config HZ 141 int 142 default 100 143 144config ARCH_HAS_HOLES_MEMORYMODEL 145 def_bool y if SPARSEMEM 146 147config ARCH_SPARSEMEM_ENABLE 148 def_bool y 149 select SPARSEMEM_VMEMMAP_ENABLE 150 151config ARCH_SPARSEMEM_DEFAULT 152 def_bool ARCH_SPARSEMEM_ENABLE 153 154config ARCH_SELECT_MEMORY_MODEL 155 def_bool ARCH_SPARSEMEM_ENABLE 156 157config HAVE_ARCH_PFN_VALID 158 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM 159 160config HW_PERF_EVENTS 161 bool "Enable hardware performance counter support for perf events" 162 depends on PERF_EVENTS 163 default y 164 help 165 Enable hardware performance counter support for perf events. If 166 disabled, perf events will use software events only. 167 168source "mm/Kconfig" 169 170endmenu 171 172menu "Boot options" 173 174config CMDLINE 175 string "Default kernel command string" 176 default "" 177 help 178 Provide a set of default command-line options at build time by 179 entering them here. As a minimum, you should specify the the 180 root device (e.g. root=/dev/nfs). 181 182config CMDLINE_FORCE 183 bool "Always use the default kernel command string" 184 help 185 Always use the default kernel command string, even if the boot 186 loader passes other arguments to the kernel. 187 This is useful if you cannot or don't want to change the 188 command-line options your boot loader passes to the kernel. 189 190endmenu 191 192menu "Userspace binary formats" 193 194source "fs/Kconfig.binfmt" 195 196config COMPAT 197 bool "Kernel support for 32-bit EL0" 198 depends on !ARM64_64K_PAGES 199 select COMPAT_BINFMT_ELF 200 select HAVE_UID16 201 help 202 This option enables support for a 32-bit EL0 running under a 64-bit 203 kernel at EL1. AArch32-specific components such as system calls, 204 the user helper functions, VFP support and the ptrace interface are 205 handled appropriately by the kernel. 206 207 If you want to execute 32-bit userspace applications, say Y. 208 209config SYSVIPC_COMPAT 210 def_bool y 211 depends on COMPAT && SYSVIPC 212 213endmenu 214 215source "net/Kconfig" 216 217source "drivers/Kconfig" 218 219source "fs/Kconfig" 220 221source "arch/arm64/Kconfig.debug" 222 223source "security/Kconfig" 224 225source "crypto/Kconfig" 226 227source "lib/Kconfig" 228