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_EXIT_THREAD
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_FUNCTION_TRACER
17 select HAVE_KERNEL_BZIP2
18 select HAVE_KERNEL_GZIP
19 select HAVE_KERNEL_LZO
22 select HAVE_MEMBLOCK_NODE_MAP
23 select HAVE_MOD_ARCH_SPECIFIC
25 select HAVE_PERF_EVENTS
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_UNDERSCORE_SYMBOL_PREFIX
29 select MODULES_USE_ELF_RELA
31 select OF_EARLY_FLATTREE
34 config STACKTRACE_SUPPORT
37 config LOCKDEP_SUPPORT
40 config RWSEM_GENERIC_SPINLOCK
43 config RWSEM_XCHGADD_ALGORITHM
46 config GENERIC_HWEIGHT
49 config GENERIC_CALIBRATE_DELAY
57 source "kernel/Kconfig.freezer"
59 menu "Processor type and features"
68 bool "Enable CPU hotplug support"
71 Say Y here to allow turning CPUs off and on. CPUs can be
72 controlled through /sys/devices/system/cpu.
74 Say N if you want to disable CPU hotplug.
77 bool "High Memory Support"
79 The address space of Meta processors is only 4 Gigabytes large
80 and it has to accommodate user address space, kernel address
81 space as well as some memory mapped IO. That means that, if you
82 have a large amount of physical memory and/or IO, not all of the
83 memory can be "permanently mapped" by the kernel. The physical
84 memory that is not permanently mapped is called "high memory".
86 Depending on the selected kernel/user memory split, minimum
87 vmalloc space and actual amount of RAM, you may not need this
88 option which should result in a slightly faster kernel.
92 source "arch/metag/mm/Kconfig"
94 source "arch/metag/Kconfig.soc"
99 Select this from the SoC config symbol to indicate that it contains a
105 Select this from the SoC config symbol to indicate that it contains a
109 bool "Symmetric multi-processing support"
110 depends on METAG_META21 && METAG_META21_MMU
112 This enables support for systems with more than one thread running
113 Linux. If you have a system with only one thread running Linux,
114 say N. Otherwise, say Y.
117 int "Maximum number of CPUs (2-4)" if SMP
122 config METAG_SMP_WRITE_REORDERING
125 This attempts to prevent cache-memory incoherence due to external
126 reordering of writes from different hardware threads when SMP is
127 enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
128 attempt to catch some of the cases, and also before writes to shared
129 memory in LOCK1 protected atomics and spinlocks.
130 This will not completely prevent cache incoherency on affected cores.
132 config METAG_LNKGET_AROUND_CACHE
134 depends on METAG_META21
136 This indicates that the LNKGET/LNKSET instructions go around the
137 cache, which requires some extra cache flushes when the memory needs
138 to be accessed by normal GET/SET instructions too.
141 prompt "Atomicity primitive"
142 default METAG_ATOMICITY_LNKGET
144 This option selects the mechanism for performing atomic operations.
146 config METAG_ATOMICITY_IRQSOFF
150 This option disables interrupts to achieve atomicity. This mechanism
153 config METAG_ATOMICITY_LNKGET
154 depends on METAG_META21
157 This option uses the LNKGET and LNKSET instructions to achieve
158 atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
159 Choose this option if your system requires low latency.
161 config METAG_ATOMICITY_LOCK1
165 This option uses the LOCK1 instruction for atomicity. This is mainly
166 provided as a debugging aid if the lnkget/lnkset atomicity primitive
167 isn't working properly.
173 depends on METAG_META21
176 This option allows processes to use FPU hardware available with this
177 CPU. If this option is not enabled FPU registers will not be saved
178 and restored on context-switch.
180 If you plan on running programs which are compiled to use hard floats
186 This option allows processes to use DSP hardware available
187 with this CPU. If this option is not enabled DSP registers
188 will not be saved and restored on context-switch.
190 If you plan on running DSP programs say Y here.
192 config METAG_PERFCOUNTER_IRQS
193 bool "PerfCounters interrupt support"
194 depends on METAG_META21
196 This option enables using interrupts to collect information from
197 Performance Counters. This option is supported in new META21
198 (starting from HTP265).
200 When disabled, Performance Counters information will be collected
201 based on Timer Interrupt.
203 config HW_PERF_EVENTS
204 def_bool METAG_PERFCOUNTER_IRQS && PERF_EVENTS
209 Say Y if you plan to use a DA debug adapter with Linux. The presence
210 of the DA will be detected automatically at boot, so it is safe to say
211 Y to this option even when booting without a DA.
213 This enables support for services provided by DA JTAG debug adapters,
215 - communication over DA channels (such as the console driver).
216 - use of the DA filesystem.
220 config METAG_BUILTIN_DTB
221 bool "Embed DTB in kernel image"
224 Embeds a device tree binary in the kernel image.
226 config METAG_BUILTIN_DTB_NAME
227 string "Built in DTB"
228 depends on METAG_BUILTIN_DTB
230 Set the name of the DTB to embed (leave blank to pick one
231 automatically based on kernel configuration).
234 bool "Default bootloader kernel arguments"
237 string "Kernel command line"
238 depends on CMDLINE_BOOL
240 On some architectures there is currently no way for the boot loader
241 to pass arguments to the kernel. For these architectures, you should
242 supply some command-line options at build time by entering them
246 bool "Force default kernel command string"
247 depends on CMDLINE_BOOL
249 Set this to have arguments from the default kernel command string
250 override those passed by the boot loader.
254 source "kernel/Kconfig.preempt"
256 source kernel/Kconfig.hz
260 menu "Power management options"
262 source kernel/power/Kconfig
266 menu "Executable file formats"
268 source "fs/Kconfig.binfmt"
274 source "drivers/Kconfig"
278 source "arch/metag/Kconfig.debug"
280 source "security/Kconfig"
282 source "crypto/Kconfig"