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