1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T if !64BIT
5 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_GRAPH_TRACER
10 select HAVE_SYSCALL_TRACEPOINTS
11 select ARCH_WANT_FRAME_POINTERS
12 select ARCH_HAS_ELF_RANDOMIZE
13 select ARCH_HAS_STRICT_KERNEL_RWX
14 select ARCH_HAS_UBSAN_SANITIZE_ALL
15 select ARCH_NO_SG_CHAIN
16 select ARCH_SUPPORTS_MEMORY_FAILURE
18 select RTC_DRV_GENERIC
19 select INIT_ALL_POSSIBLE
21 select BUILDTIME_EXTABLE_SORT
23 select HAVE_PERF_EVENTS
24 select HAVE_KERNEL_BZIP2
25 select HAVE_KERNEL_GZIP
26 select HAVE_KERNEL_LZ4
27 select HAVE_KERNEL_LZMA
28 select HAVE_KERNEL_LZO
30 select GENERIC_ATOMIC64 if !64BIT
31 select GENERIC_IRQ_PROBE
32 select GENERIC_PCI_IOMAP
33 select ARCH_HAVE_NMI_SAFE_CMPXCHG
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_CPU_DEVICES
36 select GENERIC_STRNCPY_FROM_USER
37 select SYSCTL_ARCH_UNALIGN_ALLOW
38 select SYSCTL_EXCEPTION_TRACE
39 select HAVE_MOD_ARCH_SPECIFIC
41 select MODULES_USE_ELF_RELA
42 select CLONE_BACKWARDS
43 select TTY # Needed for pdc_cons.c
44 select HAVE_DEBUG_STACKOVERFLOW
45 select HAVE_ARCH_AUDITSYSCALL
47 select HAVE_ARCH_JUMP_LABEL
48 select HAVE_ARCH_JUMP_LABEL_RELATIVE
49 select HAVE_ARCH_SECCOMP_FILTER
50 select HAVE_ARCH_TRACEHOOK
51 select HAVE_REGS_AND_STACK_ACCESS_API
52 select GENERIC_SCHED_CLOCK
53 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
54 select GENERIC_CLOCKEVENTS
55 select ARCH_NO_COHERENT_DMA_MMAP
56 select CPU_NO_EFFICIENT_FFS
57 select NEED_DMA_MAP_STATE
58 select NEED_SG_DMA_LENGTH
61 select HAVE_KRETPROBES
62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
66 The PA-RISC microprocessor is designed by Hewlett-Packard and used
67 in many of their workstations & servers (HP9000 700 and 800 series,
68 and later HP3000 series). The PA-RISC Linux project home page is
69 at <http://www.parisc-linux.org/>.
80 config GENERIC_LOCKBREAK
83 depends on SMP && PREEMPT
85 config ARCH_HAS_ILOG2_U32
89 config ARCH_HAS_ILOG2_U64
98 config GENERIC_HWEIGHT
102 config GENERIC_CALIBRATE_DELAY
111 # unless you want to implement ACPI on PA-RISC ... ;-)
115 config STACKTRACE_SUPPORT
121 config ARCH_MAY_HAVE_PC_FDC
126 config PGTABLE_LEVELS
128 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
131 config SYS_SUPPORTS_HUGETLBFS
135 menu "Processor type and features"
138 prompt "Processor type"
144 This is the processor type of your CPU. This information is
145 used for optimizing purposes. In order to compile a kernel
146 that can run on all 32-bit PA CPUs (albeit not optimally fast),
147 you can specify "PA7000" here.
149 Specifying "PA8000" here will allow you to select a 64-bit kernel
150 which is required on some machines.
155 Select this option for the PCX-L processor, as used in the
156 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
157 D200, D210, D300, D310 and E-class
162 Select this option for the PCX-T' processor, as used in the
163 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
164 K100, K200, K210, K220, K400, K410 and K420
169 Select this option for the PCX-L2 processor, as used in the
170 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
171 D220, D230, D320 and D330.
176 Select this option for PCX-U to PCX-W2 processors.
180 # Define implied options from the CPU selection here
188 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
189 select ARCH_HAS_SYNC_DMA_FOR_CPU
190 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
191 select DMA_NONCOHERENT_CACHE_SYNC
195 depends on PA8X00 || PA7200
198 bool "Enable the -mlong-calls compiler option for big kernels"
199 default y if !MODULES || UBSAN || FTRACE
203 If you configure the kernel to include many drivers built-in instead
204 as modules, the kernel executable may become too big, so that the
205 linker will not be able to resolve some long branches and fails to link
206 your vmlinux kernel. In that case enabling this option will help you
207 to overcome this limit by using the -mlong-calls compiler option.
209 Usually you want to say N here, unless you e.g. want to build
210 a kernel which includes all necessary drivers built-in and which can
211 be used for TFTP booting without the need to have an initrd ramdisk.
213 Enabling this option will probably slow down your kernel.
219 Enable this if you want to support 64bit kernel on PA-RISC platform.
221 At the moment, only people willing to use more than 2GB of RAM,
222 or having a 64bit-only capable PA-RISC machine should say Y here.
224 Since there is no 64bit userland on PA-RISC, there is no point to
225 enable this option otherwise. The 64bit kernel is significantly bigger
226 and slower than the 32bit one.
229 prompt "Kernel page size"
230 default PARISC_PAGE_SIZE_4KB
232 config PARISC_PAGE_SIZE_4KB
235 This lets you select the page size of the kernel. For best
236 performance, a page size of 16KB is recommended. For best
237 compatibility with 32bit applications, a page size of 4KB should be
238 selected (the vast majority of 32bit binaries work perfectly fine
239 with a larger page size).
241 4KB For best 32bit compatibility
242 16KB For best performance
243 64KB For best performance, might give more overhead.
245 If you don't know what to do, choose 4KB.
247 config PARISC_PAGE_SIZE_16KB
249 depends on PA8X00 && BROKEN
251 config PARISC_PAGE_SIZE_64KB
253 depends on PA8X00 && BROKEN
257 config PARISC_SELF_EXTRACT
258 bool "Build kernel as self-extracting executable"
261 Say Y if you want to build the parisc kernel as a kind of
262 self-extracting executable.
264 If you say N here, the kernel will be compressed with gzip
265 which can be loaded by the palo bootloader directly too.
267 If you don't know what to do here, say Y.
270 bool "Symmetric multi-processing support"
272 This enables support for systems with more than one CPU. If you have
273 a system with only one CPU, say N. If you have a system with more
276 If you say N here, the kernel will run on uni- and multiprocessor
277 machines, but will use only one CPU of a multiprocessor machine.
278 On a uniprocessor machine, the kernel will run faster if you say N.
280 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
281 available at <http://www.tldp.org/docs.html#howto>.
283 If you don't know what to do here, say N.
285 config PARISC_CPU_TOPOLOGY
286 bool "Support cpu topology definition"
290 Support PARISC cpu topology definition.
293 bool "Multi-core scheduler support"
294 depends on PARISC_CPU_TOPOLOGY && PA8X00
296 Multi-core scheduler support improves the CPU scheduler's decision
297 making when dealing with multi-core CPU chips at a cost of slightly
298 increased overhead in some places. If unsure say N here.
301 bool "Use separate kernel stacks when processing interrupts"
304 If you say Y here the kernel will use separate kernel stacks
305 for handling hard and soft interrupts. This can help avoid
306 overflowing the process kernel stacks.
312 config ARCH_SELECT_MEMORY_MODEL
316 config ARCH_SPARSEMEM_ENABLE
320 config ARCH_FLATMEM_ENABLE
323 config ARCH_SPARSEMEM_DEFAULT
325 depends on ARCH_SPARSEMEM_ENABLE
327 source "kernel/Kconfig.hz"
332 select COMPAT_BINFMT_ELF if BINFMT_ELF
334 config SYSVIPC_COMPAT
336 depends on COMPAT && SYSVIPC
342 int "Maximum number of CPUs (2-32)"
350 source "drivers/parisc/Kconfig"
354 prompt "Enable seccomp to safely compute untrusted bytecode"
356 This kernel feature is useful for number crunching applications
357 that may need to compute untrusted bytecode during their
358 execution. By using pipes or other transports made available to
359 the process as file descriptors supporting the read/write
360 syscalls, it's possible to isolate those applications in
361 their own address space using seccomp. Once seccomp is
362 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
363 and the task is only allowed to execute a few safe syscalls
364 defined by each seccomp mode.
366 If unsure, say Y. Only embedded should say N here.