1config ARM64 2 def_bool y 3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 5 select ARCH_WANT_FRAME_POINTERS 6 select ARM_AMBA 7 select CLONE_BACKWARDS 8 select COMMON_CLK 9 select GENERIC_CLOCKEVENTS 10 select GENERIC_HARDIRQS_NO_DEPRECATED 11 select GENERIC_IOMAP 12 select GENERIC_IRQ_PROBE 13 select GENERIC_IRQ_SHOW 14 select GENERIC_SMP_IDLE_THREAD 15 select GENERIC_TIME_VSYSCALL 16 select HARDIRQS_SW_RESEND 17 select HAVE_ARCH_TRACEHOOK 18 select HAVE_DEBUG_BUGVERBOSE 19 select HAVE_DEBUG_KMEMLEAK 20 select HAVE_DMA_API_DEBUG 21 select HAVE_DMA_ATTRS 22 select HAVE_GENERIC_DMA_COHERENT 23 select HAVE_GENERIC_HARDIRQS 24 select HAVE_HW_BREAKPOINT if PERF_EVENTS 25 select HAVE_MEMBLOCK 26 select HAVE_PERF_EVENTS 27 select IRQ_DOMAIN 28 select MODULES_USE_ELF_RELA 29 select NO_BOOTMEM 30 select OF 31 select OF_EARLY_FLATTREE 32 select PERF_USE_VMALLOC 33 select RTC_LIB 34 select SPARSE_IRQ 35 select SYSCTL_EXCEPTION_TRACE 36 help 37 ARM 64-bit (AArch64) Linux support. 38 39config 64BIT 40 def_bool y 41 42config ARCH_PHYS_ADDR_T_64BIT 43 def_bool y 44 45config MMU 46 def_bool y 47 48config NO_IOPORT 49 def_bool y 50 51config STACKTRACE_SUPPORT 52 def_bool y 53 54config LOCKDEP_SUPPORT 55 def_bool y 56 57config TRACE_IRQFLAGS_SUPPORT 58 def_bool y 59 60config GENERIC_LOCKBREAK 61 def_bool y 62 depends on SMP && PREEMPT 63 64config RWSEM_GENERIC_SPINLOCK 65 def_bool y 66 67config GENERIC_HWEIGHT 68 def_bool y 69 70config GENERIC_CSUM 71 def_bool y 72 73config GENERIC_CALIBRATE_DELAY 74 def_bool y 75 76config ZONE_DMA32 77 def_bool y 78 79config ARCH_DMA_ADDR_T_64BIT 80 def_bool y 81 82config NEED_DMA_MAP_STATE 83 def_bool y 84 85config NEED_SG_DMA_LENGTH 86 def_bool y 87 88config SWIOTLB 89 def_bool y 90 91config IOMMU_HELPER 92 def_bool SWIOTLB 93 94config GENERIC_GPIO 95 def_bool y 96 97source "init/Kconfig" 98 99source "kernel/Kconfig.freezer" 100 101menu "System Type" 102 103endmenu 104 105menu "Bus support" 106 107config ARM_AMBA 108 bool 109 110endmenu 111 112menu "Kernel Features" 113 114source "kernel/time/Kconfig" 115 116config ARM64_64K_PAGES 117 bool "Enable 64KB pages support" 118 help 119 This feature enables 64KB pages support (4KB by default) 120 allowing only two levels of page tables and faster TLB 121 look-up. AArch32 emulation is not available when this feature 122 is enabled. 123 124config SMP 125 bool "Symmetric Multi-Processing" 126 select USE_GENERIC_SMP_HELPERS 127 help 128 This enables support for systems with more than one CPU. If 129 you say N here, the kernel will run on single and 130 multiprocessor machines, but will use only one CPU of a 131 multiprocessor machine. If you say Y here, the kernel will run 132 on many, but not all, single processor machines. On a single 133 processor machine, the kernel will run faster if you say N 134 here. 135 136 If you don't know what to do here, say N. 137 138config NR_CPUS 139 int "Maximum number of CPUs (2-32)" 140 range 2 32 141 depends on SMP 142 default "4" 143 144source kernel/Kconfig.preempt 145 146config HZ 147 int 148 default 100 149 150config ARCH_HAS_HOLES_MEMORYMODEL 151 def_bool y if SPARSEMEM 152 153config ARCH_SPARSEMEM_ENABLE 154 def_bool y 155 select SPARSEMEM_VMEMMAP_ENABLE 156 157config ARCH_SPARSEMEM_DEFAULT 158 def_bool ARCH_SPARSEMEM_ENABLE 159 160config ARCH_SELECT_MEMORY_MODEL 161 def_bool ARCH_SPARSEMEM_ENABLE 162 163config HAVE_ARCH_PFN_VALID 164 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM 165 166config HW_PERF_EVENTS 167 bool "Enable hardware performance counter support for perf events" 168 depends on PERF_EVENTS 169 default y 170 help 171 Enable hardware performance counter support for perf events. If 172 disabled, perf events will use software events only. 173 174source "mm/Kconfig" 175 176endmenu 177 178menu "Boot options" 179 180config CMDLINE 181 string "Default kernel command string" 182 default "" 183 help 184 Provide a set of default command-line options at build time by 185 entering them here. As a minimum, you should specify the the 186 root device (e.g. root=/dev/nfs). 187 188config CMDLINE_FORCE 189 bool "Always use the default kernel command string" 190 help 191 Always use the default kernel command string, even if the boot 192 loader passes other arguments to the kernel. 193 This is useful if you cannot or don't want to change the 194 command-line options your boot loader passes to the kernel. 195 196endmenu 197 198menu "Userspace binary formats" 199 200source "fs/Kconfig.binfmt" 201 202config COMPAT 203 bool "Kernel support for 32-bit EL0" 204 depends on !ARM64_64K_PAGES 205 select COMPAT_BINFMT_ELF 206 select HAVE_UID16 207 help 208 This option enables support for a 32-bit EL0 running under a 64-bit 209 kernel at EL1. AArch32-specific components such as system calls, 210 the user helper functions, VFP support and the ptrace interface are 211 handled appropriately by the kernel. 212 213 If you want to execute 32-bit userspace applications, say Y. 214 215config SYSVIPC_COMPAT 216 def_bool y 217 depends on COMPAT && SYSVIPC 218 219endmenu 220 221source "net/Kconfig" 222 223source "drivers/Kconfig" 224 225source "fs/Kconfig" 226 227source "arch/arm64/Kconfig.debug" 228 229source "security/Kconfig" 230 231source "crypto/Kconfig" 232 233source "lib/Kconfig" 234