1config ARM64 2 def_bool y 3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4 select ARCH_WANT_OPTIONAL_GPIOLIB 5 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 6 select ARCH_WANT_FRAME_POINTERS 7 select ARM_AMBA 8 select ARM_ARCH_TIMER 9 select CLONE_BACKWARDS 10 select COMMON_CLK 11 select GENERIC_CLOCKEVENTS 12 select GENERIC_IOMAP 13 select GENERIC_IRQ_PROBE 14 select GENERIC_IRQ_SHOW 15 select GENERIC_SMP_IDLE_THREAD 16 select GENERIC_TIME_VSYSCALL 17 select HARDIRQS_SW_RESEND 18 select HAVE_ARCH_TRACEHOOK 19 select HAVE_DEBUG_BUGVERBOSE 20 select HAVE_DEBUG_KMEMLEAK 21 select HAVE_DMA_API_DEBUG 22 select HAVE_DMA_ATTRS 23 select HAVE_GENERIC_DMA_COHERENT 24 select HAVE_GENERIC_HARDIRQS 25 select HAVE_HW_BREAKPOINT if PERF_EVENTS 26 select HAVE_MEMBLOCK 27 select HAVE_PERF_EVENTS 28 select IRQ_DOMAIN 29 select MODULES_USE_ELF_RELA 30 select NO_BOOTMEM 31 select OF 32 select OF_EARLY_FLATTREE 33 select PERF_USE_VMALLOC 34 select RTC_LIB 35 select SPARSE_IRQ 36 select SYSCTL_EXCEPTION_TRACE 37 help 38 ARM 64-bit (AArch64) Linux support. 39 40config 64BIT 41 def_bool y 42 43config ARCH_PHYS_ADDR_T_64BIT 44 def_bool y 45 46config MMU 47 def_bool y 48 49config NO_IOPORT 50 def_bool y 51 52config STACKTRACE_SUPPORT 53 def_bool y 54 55config LOCKDEP_SUPPORT 56 def_bool y 57 58config TRACE_IRQFLAGS_SUPPORT 59 def_bool y 60 61config GENERIC_LOCKBREAK 62 def_bool y 63 depends on SMP && PREEMPT 64 65config RWSEM_GENERIC_SPINLOCK 66 def_bool y 67 68config GENERIC_HWEIGHT 69 def_bool y 70 71config GENERIC_CSUM 72 def_bool y 73 74config GENERIC_CALIBRATE_DELAY 75 def_bool y 76 77config ZONE_DMA32 78 def_bool y 79 80config ARCH_DMA_ADDR_T_64BIT 81 def_bool y 82 83config NEED_DMA_MAP_STATE 84 def_bool y 85 86config NEED_SG_DMA_LENGTH 87 def_bool y 88 89config SWIOTLB 90 def_bool y 91 92config IOMMU_HELPER 93 def_bool SWIOTLB 94 95config GENERIC_GPIO 96 bool 97 98source "init/Kconfig" 99 100source "kernel/Kconfig.freezer" 101 102menu "System Type" 103 104endmenu 105 106menu "Bus support" 107 108config ARM_AMBA 109 bool 110 111endmenu 112 113menu "Kernel Features" 114 115source "kernel/time/Kconfig" 116 117config ARM64_64K_PAGES 118 bool "Enable 64KB pages support" 119 help 120 This feature enables 64KB pages support (4KB by default) 121 allowing only two levels of page tables and faster TLB 122 look-up. AArch32 emulation is not available when this feature 123 is enabled. 124 125config SMP 126 bool "Symmetric Multi-Processing" 127 select USE_GENERIC_SMP_HELPERS 128 help 129 This enables support for systems with more than one CPU. If 130 you say N here, the kernel will run on single and 131 multiprocessor machines, but will use only one CPU of a 132 multiprocessor machine. If you say Y here, the kernel will run 133 on many, but not all, single processor machines. On a single 134 processor machine, the kernel will run faster if you say N 135 here. 136 137 If you don't know what to do here, say N. 138 139config NR_CPUS 140 int "Maximum number of CPUs (2-32)" 141 range 2 32 142 depends on SMP 143 default "4" 144 145source kernel/Kconfig.preempt 146 147config HZ 148 int 149 default 100 150 151config ARCH_HAS_HOLES_MEMORYMODEL 152 def_bool y if SPARSEMEM 153 154config ARCH_SPARSEMEM_ENABLE 155 def_bool y 156 select SPARSEMEM_VMEMMAP_ENABLE 157 158config ARCH_SPARSEMEM_DEFAULT 159 def_bool ARCH_SPARSEMEM_ENABLE 160 161config ARCH_SELECT_MEMORY_MODEL 162 def_bool ARCH_SPARSEMEM_ENABLE 163 164config HAVE_ARCH_PFN_VALID 165 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM 166 167config HW_PERF_EVENTS 168 bool "Enable hardware performance counter support for perf events" 169 depends on PERF_EVENTS 170 default y 171 help 172 Enable hardware performance counter support for perf events. If 173 disabled, perf events will use software events only. 174 175source "mm/Kconfig" 176 177endmenu 178 179menu "Boot options" 180 181config CMDLINE 182 string "Default kernel command string" 183 default "" 184 help 185 Provide a set of default command-line options at build time by 186 entering them here. As a minimum, you should specify the the 187 root device (e.g. root=/dev/nfs). 188 189config CMDLINE_FORCE 190 bool "Always use the default kernel command string" 191 help 192 Always use the default kernel command string, even if the boot 193 loader passes other arguments to the kernel. 194 This is useful if you cannot or don't want to change the 195 command-line options your boot loader passes to the kernel. 196 197endmenu 198 199menu "Userspace binary formats" 200 201source "fs/Kconfig.binfmt" 202 203config COMPAT 204 bool "Kernel support for 32-bit EL0" 205 depends on !ARM64_64K_PAGES 206 select COMPAT_BINFMT_ELF 207 select HAVE_UID16 208 select OLD_SIGSUSPEND3 209 select COMPAT_OLD_SIGACTION 210 help 211 This option enables support for a 32-bit EL0 running under a 64-bit 212 kernel at EL1. AArch32-specific components such as system calls, 213 the user helper functions, VFP support and the ptrace interface are 214 handled appropriately by the kernel. 215 216 If you want to execute 32-bit userspace applications, say Y. 217 218config SYSVIPC_COMPAT 219 def_bool y 220 depends on COMPAT && SYSVIPC 221 222endmenu 223 224source "net/Kconfig" 225 226source "drivers/Kconfig" 227 228source "fs/Kconfig" 229 230source "arch/arm64/Kconfig.debug" 231 232source "security/Kconfig" 233 234source "crypto/Kconfig" 235 236source "lib/Kconfig" 237