1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select HAVE_FUNCTION_TRACER
8 select HAVE_FUNCTION_GRAPH_TRACER
9 select HAVE_SYSCALL_TRACEPOINTS
10 select ARCH_WANT_FRAME_POINTERS
11 select ARCH_HAS_ELF_RANDOMIZE
12 select ARCH_HAS_STRICT_KERNEL_RWX
13 select ARCH_HAS_UBSAN_SANITIZE_ALL
14 select ARCH_SUPPORTS_MEMORY_FAILURE
16 select RTC_DRV_GENERIC
17 select INIT_ALL_POSSIBLE
21 select BUILDTIME_EXTABLE_SORT
22 select HAVE_PERF_EVENTS
23 select HAVE_KERNEL_BZIP2
24 select HAVE_KERNEL_GZIP
25 select HAVE_KERNEL_LZ4
26 select HAVE_KERNEL_LZMA
27 select HAVE_KERNEL_LZO
29 select GENERIC_ATOMIC64 if !64BIT
30 select GENERIC_IRQ_PROBE
31 select GENERIC_PCI_IOMAP
32 select ARCH_HAVE_NMI_SAFE_CMPXCHG
33 select GENERIC_SMP_IDLE_THREAD
34 select GENERIC_CPU_DEVICES
35 select GENERIC_STRNCPY_FROM_USER
36 select SYSCTL_ARCH_UNALIGN_ALLOW
37 select SYSCTL_EXCEPTION_TRACE
38 select HAVE_MOD_ARCH_SPECIFIC
40 select MODULES_USE_ELF_RELA
41 select CLONE_BACKWARDS
42 select TTY # Needed for pdc_cons.c
43 select HAVE_DEBUG_STACKOVERFLOW
44 select HAVE_ARCH_AUDITSYSCALL
46 select HAVE_ARCH_SECCOMP_FILTER
47 select HAVE_ARCH_TRACEHOOK
48 select HAVE_REGS_AND_STACK_ACCESS_API
49 select GENERIC_SCHED_CLOCK
50 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
51 select GENERIC_CLOCKEVENTS
52 select ARCH_NO_COHERENT_DMA_MMAP
53 select CPU_NO_EFFICIENT_FFS
54 select NEED_DMA_MAP_STATE
55 select NEED_SG_DMA_LENGTH
58 The PA-RISC microprocessor is designed by Hewlett-Packard and used
59 in many of their workstations & servers (HP9000 700 and 800 series,
60 and later HP3000 series). The PA-RISC Linux project home page is
61 at <http://www.parisc-linux.org/>.
72 config GENERIC_LOCKBREAK
75 depends on SMP && PREEMPT
77 config RWSEM_GENERIC_SPINLOCK
80 config RWSEM_XCHGADD_ALGORITHM
83 config ARCH_HAS_ILOG2_U32
87 config ARCH_HAS_ILOG2_U64
96 config GENERIC_HWEIGHT
100 config GENERIC_CALIBRATE_DELAY
109 # unless you want to implement ACPI on PA-RISC ... ;-)
113 config STACKTRACE_SUPPORT
119 config ARCH_MAY_HAVE_PC_FDC
124 config PGTABLE_LEVELS
126 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
129 config SYS_SUPPORTS_HUGETLBFS
132 source "init/Kconfig"
134 source "kernel/Kconfig.freezer"
137 menu "Processor type and features"
140 prompt "Processor type"
146 This is the processor type of your CPU. This information is
147 used for optimizing purposes. In order to compile a kernel
148 that can run on all 32-bit PA CPUs (albeit not optimally fast),
149 you can specify "PA7000" here.
151 Specifying "PA8000" here will allow you to select a 64-bit kernel
152 which is required on some machines.
157 Select this option for the PCX-L processor, as used in the
158 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
159 D200, D210, D300, D310 and E-class
164 Select this option for the PCX-T' processor, as used in the
165 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
166 K100, K200, K210, K220, K400, K410 and K420
171 Select this option for the PCX-L2 processor, as used in the
172 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
173 D220, D230, D320 and D330.
178 Select this option for PCX-U to PCX-W2 processors.
182 # Define implied options from the CPU selection here
190 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
191 select ARCH_HAS_SYNC_DMA_FOR_CPU
192 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
193 select DMA_NONCOHERENT_OPS
194 select DMA_NONCOHERENT_CACHE_SYNC
198 depends on PA8X00 || PA7200
201 bool "Enable the -mlong-calls compiler option for big kernels"
205 If you configure the kernel to include many drivers built-in instead
206 as modules, the kernel executable may become too big, so that the
207 linker will not be able to resolve some long branches and fails to link
208 your vmlinux kernel. In that case enabling this option will help you
209 to overcome this limit by using the -mlong-calls compiler option.
211 Usually you want to say N here, unless you e.g. want to build
212 a kernel which includes all necessary drivers built-in and which can
213 be used for TFTP booting without the need to have an initrd ramdisk.
215 Enabling this option will probably slow down your kernel.
221 Enable this if you want to support 64bit kernel on PA-RISC platform.
223 At the moment, only people willing to use more than 2GB of RAM,
224 or having a 64bit-only capable PA-RISC machine should say Y here.
226 Since there is no 64bit userland on PA-RISC, there is no point to
227 enable this option otherwise. The 64bit kernel is significantly bigger
228 and slower than the 32bit one.
231 prompt "Kernel page size"
232 default PARISC_PAGE_SIZE_4KB
234 config PARISC_PAGE_SIZE_4KB
237 This lets you select the page size of the kernel. For best
238 performance, a page size of 16KB is recommended. For best
239 compatibility with 32bit applications, a page size of 4KB should be
240 selected (the vast majority of 32bit binaries work perfectly fine
241 with a larger page size).
243 4KB For best 32bit compatibility
244 16KB For best performance
245 64KB For best performance, might give more overhead.
247 If you don't know what to do, choose 4KB.
249 config PARISC_PAGE_SIZE_16KB
251 depends on PA8X00 && BROKEN
253 config PARISC_PAGE_SIZE_64KB
255 depends on PA8X00 && BROKEN
259 config PARISC_SELF_EXTRACT
260 bool "Build kernel as self-extracting executable"
263 Say Y if you want to build the parisc kernel as a kind of
264 self-extracting executable.
266 If you say N here, the kernel will be compressed with gzip
267 which can be loaded by the palo bootloader directly too.
269 If you don't know what to do here, say Y.
272 bool "Symmetric multi-processing support"
274 This enables support for systems with more than one CPU. If you have
275 a system with only one CPU, say N. If you have a system with more
278 If you say N here, the kernel will run on uni- and multiprocessor
279 machines, but will use only one CPU of a multiprocessor machine.
280 On a uniprocessor machine, the kernel will run faster if you say N.
282 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
283 available at <http://www.tldp.org/docs.html#howto>.
285 If you don't know what to do here, say N.
287 config PARISC_CPU_TOPOLOGY
288 bool "Support cpu topology definition"
292 Support PARISC cpu topology definition.
295 bool "Multi-core scheduler support"
296 depends on PARISC_CPU_TOPOLOGY && PA8X00
298 Multi-core scheduler support improves the CPU scheduler's decision
299 making when dealing with multi-core CPU chips at a cost of slightly
300 increased overhead in some places. If unsure say N here.
303 bool "Use separate kernel stacks when processing interrupts"
306 If you say Y here the kernel will use separate kernel stacks
307 for handling hard and soft interrupts. This can help avoid
308 overflowing the process kernel stacks.
314 config ARCH_SELECT_MEMORY_MODEL
318 config ARCH_DISCONTIGMEM_ENABLE
322 config ARCH_FLATMEM_ENABLE
325 config ARCH_DISCONTIGMEM_DEFAULT
327 depends on ARCH_DISCONTIGMEM_ENABLE
332 depends on NEED_MULTIPLE_NODES
334 source "kernel/Kconfig.preempt"
335 source "kernel/Kconfig.hz"
341 select COMPAT_BINFMT_ELF if BINFMT_ELF
343 config SYSVIPC_COMPAT
345 depends on COMPAT && SYSVIPC
351 int "Maximum number of CPUs (2-32)"
359 source "drivers/parisc/Kconfig"
362 menu "Executable file formats"
364 source "fs/Kconfig.binfmt"
370 source "drivers/Kconfig"
374 source "arch/parisc/Kconfig.debug"
378 prompt "Enable seccomp to safely compute untrusted bytecode"
380 This kernel feature is useful for number crunching applications
381 that may need to compute untrusted bytecode during their
382 execution. By using pipes or other transports made available to
383 the process as file descriptors supporting the read/write
384 syscalls, it's possible to isolate those applications in
385 their own address space using seccomp. Once seccomp is
386 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
387 and the task is only allowed to execute a few safe syscalls
388 defined by each seccomp mode.
390 If unsure, say Y. Only embedded should say N here.
392 source "security/Kconfig"
394 source "crypto/Kconfig"