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