8 select GENERIC_ATOMIC64
9 select GENERIC_CLOCKEVENTS
10 select GENERIC_IRQ_SHOW
11 select GENERIC_SMP_IDLE_THREAD
12 select HAVE_64BIT_ALIGNED_ACCESS
13 select HAVE_ARCH_TRACEHOOK
14 select HAVE_C_RECORDMCOUNT
15 select HAVE_DEBUG_KMEMLEAK
16 select HAVE_DYNAMIC_FTRACE
17 select HAVE_FTRACE_MCOUNT_RECORD
18 select HAVE_FUNCTION_TRACER
19 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
20 select HAVE_GENERIC_HARDIRQS
21 select HAVE_KERNEL_BZIP2
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
26 select HAVE_MEMBLOCK_NODE_MAP
27 select HAVE_MOD_ARCH_SPECIFIC
28 select HAVE_PERF_EVENTS
29 select HAVE_SYSCALL_TRACEPOINTS
31 select MODULES_USE_ELF_RELA
33 select OF_EARLY_FLATTREE
36 config STACKTRACE_SUPPORT
39 config LOCKDEP_SUPPORT
42 config HAVE_LATENCYTOP_SUPPORT
45 config RWSEM_GENERIC_SPINLOCK
48 config RWSEM_XCHGADD_ALGORITHM
51 config GENERIC_HWEIGHT
54 config GENERIC_CALIBRATE_DELAY
65 source "kernel/Kconfig.freezer"
67 menu "Processor type and features"
76 bool "Enable CPU hotplug support"
79 Say Y here to allow turning CPUs off and on. CPUs can be
80 controlled through /sys/devices/system/cpu.
82 Say N if you want to disable CPU hotplug.
85 bool "High Memory Support"
87 The address space of Meta processors is only 4 Gigabytes large
88 and it has to accommodate user address space, kernel address
89 space as well as some memory mapped IO. That means that, if you
90 have a large amount of physical memory and/or IO, not all of the
91 memory can be "permanently mapped" by the kernel. The physical
92 memory that is not permanently mapped is called "high memory".
94 Depending on the selected kernel/user memory split, minimum
95 vmalloc space and actual amount of RAM, you may not need this
96 option which should result in a slightly faster kernel.
100 source "arch/metag/mm/Kconfig"
102 source "arch/metag/Kconfig.soc"
107 Select this from the SoC config symbol to indicate that it contains a
113 Select this from the SoC config symbol to indicate that it contains a
117 bool "Symmetric multi-processing support"
118 depends on METAG_META21 && METAG_META21_MMU
119 select USE_GENERIC_SMP_HELPERS
121 This enables support for systems with more than one thread running
122 Linux. If you have a system with only one thread running Linux,
123 say N. Otherwise, say Y.
126 int "Maximum number of CPUs (2-4)" if SMP
131 config METAG_SMP_WRITE_REORDERING
134 This attempts to prevent cache-memory incoherence due to external
135 reordering of writes from different hardware threads when SMP is
136 enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
137 attempt to catch some of the cases, and also before writes to shared
138 memory in LOCK1 protected atomics and spinlocks.
139 This will not completely prevent cache incoherency on affected cores.
141 config METAG_LNKGET_AROUND_CACHE
143 depends on METAG_META21
145 This indicates that the LNKGET/LNKSET instructions go around the
146 cache, which requires some extra cache flushes when the memory needs
147 to be accessed by normal GET/SET instructions too.
150 prompt "Atomicity primitive"
151 default METAG_ATOMICITY_LNKGET
153 This option selects the mechanism for performing atomic operations.
155 config METAG_ATOMICITY_IRQSOFF
159 This option disables interrupts to achieve atomicity. This mechanism
162 config METAG_ATOMICITY_LNKGET
163 depends on METAG_META21
166 This option uses the LNKGET and LNKSET instructions to achieve
167 atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
168 Choose this option if your system requires low latency.
170 config METAG_ATOMICITY_LOCK1
174 This option uses the LOCK1 instruction for atomicity. This is mainly
175 provided as a debugging aid if the lnkget/lnkset atomicity primitive
176 isn't working properly.
182 depends on METAG_META21
185 This option allows processes to use FPU hardware available with this
186 CPU. If this option is not enabled FPU registers will not be saved
187 and restored on context-switch.
189 If you plan on running programs which are compiled to use hard floats
195 This option allows processes to use DSP hardware available
196 with this CPU. If this option is not enabled DSP registers
197 will not be saved and restored on context-switch.
199 If you plan on running DSP programs say Y here.
201 config METAG_PERFCOUNTER_IRQS
202 bool "PerfCounters interrupt support"
203 depends on METAG_META21
205 This option enables using interrupts to collect information from
206 Performance Counters. This option is supported in new META21
207 (starting from HTP265).
209 When disabled, Performance Counters information will be collected
210 based on Timer Interrupt.
215 Say Y if you plan to use a DA debug adapter with Linux. The presence
216 of the DA will be detected automatically at boot, so it is safe to say
217 Y to this option even when booting without a DA.
219 This enables support for services provided by DA JTAG debug adapters,
221 - communication over DA channels (such as the console driver).
222 - use of the DA filesystem.
226 config METAG_BUILTIN_DTB
227 bool "Embed DTB in kernel image"
230 Embeds a device tree binary in the kernel image.
232 config METAG_BUILTIN_DTB_NAME
233 string "Built in DTB"
234 depends on METAG_BUILTIN_DTB
236 Set the name of the DTB to embed (leave blank to pick one
237 automatically based on kernel configuration).
240 bool "Default bootloader kernel arguments"
243 string "Kernel command line"
244 depends on CMDLINE_BOOL
246 On some architectures there is currently no way for the boot loader
247 to pass arguments to the kernel. For these architectures, you should
248 supply some command-line options at build time by entering them
252 bool "Force default kernel command string"
253 depends on CMDLINE_BOOL
255 Set this to have arguments from the default kernel command string
256 override those passed by the boot loader.
260 source "kernel/Kconfig.preempt"
262 source kernel/Kconfig.hz
266 menu "Power management options"
268 source kernel/power/Kconfig
272 menu "Executable file formats"
274 source "fs/Kconfig.binfmt"
280 source "drivers/Kconfig"
284 source "arch/metag/Kconfig.debug"
286 source "security/Kconfig"
288 source "crypto/Kconfig"