4 select GENERIC_ATOMIC64
5 select GENERIC_CLOCKEVENTS
6 select GENERIC_IRQ_SHOW
7 select GENERIC_SMP_IDLE_THREAD
8 select HAVE_64BIT_ALIGNED_ACCESS
9 select HAVE_ARCH_TRACEHOOK
10 select HAVE_C_RECORDMCOUNT
11 select HAVE_DEBUG_KMEMLEAK
12 select HAVE_DEBUG_STACKOVERFLOW
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_FUNCTION_TRACER
16 select HAVE_KERNEL_BZIP2
17 select HAVE_KERNEL_GZIP
18 select HAVE_KERNEL_LZO
21 select HAVE_MEMBLOCK_NODE_MAP
22 select HAVE_MOD_ARCH_SPECIFIC
24 select HAVE_PERF_EVENTS
25 select HAVE_SYSCALL_TRACEPOINTS
26 select HAVE_UNDERSCORE_SYMBOL_PREFIX
28 select MODULES_USE_ELF_RELA
30 select OF_EARLY_FLATTREE
33 config STACKTRACE_SUPPORT
36 config LOCKDEP_SUPPORT
39 config RWSEM_GENERIC_SPINLOCK
42 config RWSEM_XCHGADD_ALGORITHM
45 config GENERIC_HWEIGHT
48 config GENERIC_CALIBRATE_DELAY
56 source "kernel/Kconfig.freezer"
58 menu "Processor type and features"
67 bool "Enable CPU hotplug support"
70 Say Y here to allow turning CPUs off and on. CPUs can be
71 controlled through /sys/devices/system/cpu.
73 Say N if you want to disable CPU hotplug.
76 bool "High Memory Support"
78 The address space of Meta processors is only 4 Gigabytes large
79 and it has to accommodate user address space, kernel address
80 space as well as some memory mapped IO. That means that, if you
81 have a large amount of physical memory and/or IO, not all of the
82 memory can be "permanently mapped" by the kernel. The physical
83 memory that is not permanently mapped is called "high memory".
85 Depending on the selected kernel/user memory split, minimum
86 vmalloc space and actual amount of RAM, you may not need this
87 option which should result in a slightly faster kernel.
91 source "arch/metag/mm/Kconfig"
93 source "arch/metag/Kconfig.soc"
98 Select this from the SoC config symbol to indicate that it contains a
104 Select this from the SoC config symbol to indicate that it contains a
108 bool "Symmetric multi-processing support"
109 depends on METAG_META21 && METAG_META21_MMU
111 This enables support for systems with more than one thread running
112 Linux. If you have a system with only one thread running Linux,
113 say N. Otherwise, say Y.
116 int "Maximum number of CPUs (2-4)" if SMP
121 config METAG_SMP_WRITE_REORDERING
124 This attempts to prevent cache-memory incoherence due to external
125 reordering of writes from different hardware threads when SMP is
126 enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
127 attempt to catch some of the cases, and also before writes to shared
128 memory in LOCK1 protected atomics and spinlocks.
129 This will not completely prevent cache incoherency on affected cores.
131 config METAG_LNKGET_AROUND_CACHE
133 depends on METAG_META21
135 This indicates that the LNKGET/LNKSET instructions go around the
136 cache, which requires some extra cache flushes when the memory needs
137 to be accessed by normal GET/SET instructions too.
140 prompt "Atomicity primitive"
141 default METAG_ATOMICITY_LNKGET
143 This option selects the mechanism for performing atomic operations.
145 config METAG_ATOMICITY_IRQSOFF
149 This option disables interrupts to achieve atomicity. This mechanism
152 config METAG_ATOMICITY_LNKGET
153 depends on METAG_META21
156 This option uses the LNKGET and LNKSET instructions to achieve
157 atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
158 Choose this option if your system requires low latency.
160 config METAG_ATOMICITY_LOCK1
164 This option uses the LOCK1 instruction for atomicity. This is mainly
165 provided as a debugging aid if the lnkget/lnkset atomicity primitive
166 isn't working properly.
172 depends on METAG_META21
175 This option allows processes to use FPU hardware available with this
176 CPU. If this option is not enabled FPU registers will not be saved
177 and restored on context-switch.
179 If you plan on running programs which are compiled to use hard floats
185 This option allows processes to use DSP hardware available
186 with this CPU. If this option is not enabled DSP registers
187 will not be saved and restored on context-switch.
189 If you plan on running DSP programs say Y here.
191 config METAG_PERFCOUNTER_IRQS
192 bool "PerfCounters interrupt support"
193 depends on METAG_META21
195 This option enables using interrupts to collect information from
196 Performance Counters. This option is supported in new META21
197 (starting from HTP265).
199 When disabled, Performance Counters information will be collected
200 based on Timer Interrupt.
202 config HW_PERF_EVENTS
203 def_bool METAG_PERFCOUNTER_IRQS && PERF_EVENTS
208 Say Y if you plan to use a DA debug adapter with Linux. The presence
209 of the DA will be detected automatically at boot, so it is safe to say
210 Y to this option even when booting without a DA.
212 This enables support for services provided by DA JTAG debug adapters,
214 - communication over DA channels (such as the console driver).
215 - use of the DA filesystem.
219 config METAG_BUILTIN_DTB
220 bool "Embed DTB in kernel image"
223 Embeds a device tree binary in the kernel image.
225 config METAG_BUILTIN_DTB_NAME
226 string "Built in DTB"
227 depends on METAG_BUILTIN_DTB
229 Set the name of the DTB to embed (leave blank to pick one
230 automatically based on kernel configuration).
233 bool "Default bootloader kernel arguments"
236 string "Kernel command line"
237 depends on CMDLINE_BOOL
239 On some architectures there is currently no way for the boot loader
240 to pass arguments to the kernel. For these architectures, you should
241 supply some command-line options at build time by entering them
245 bool "Force default kernel command string"
246 depends on CMDLINE_BOOL
248 Set this to have arguments from the default kernel command string
249 override those passed by the boot loader.
253 source "kernel/Kconfig.preempt"
255 source kernel/Kconfig.hz
259 menu "Power management options"
261 source kernel/power/Kconfig
265 menu "Executable file formats"
267 source "fs/Kconfig.binfmt"
273 source "drivers/Kconfig"
277 source "arch/metag/Kconfig.debug"
279 source "security/Kconfig"
281 source "crypto/Kconfig"